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Gene Information

Gene symbol: CD4

Gene name: CD4 molecule

HGNC ID: 1678

Related Genes

# Gene Symbol Number of hits
1 AADAC 1 hits
2 ABCB1 1 hits
3 ACADL 1 hits
4 ADCYAP1 1 hits
5 ADIPOQ 1 hits
6 AGT 1 hits
7 AHR 1 hits
8 AIRE 1 hits
9 AKT1 1 hits
10 ALB 1 hits
11 AMY2A 1 hits
12 APC 1 hits
13 APLP2 1 hits
14 APOE 1 hits
15 APP 1 hits
16 ARNTL2 1 hits
17 ART1 1 hits
18 ART2P 1 hits
19 ATN1 1 hits
20 ATP4A 1 hits
21 B3GAT1 1 hits
22 BACH2 1 hits
23 BAX 1 hits
24 BCL2 1 hits
25 BCL2L1 1 hits
26 BGLAP 1 hits
27 BMP2 1 hits
28 BTK 1 hits
29 BTLA 1 hits
30 C11orf6 1 hits
31 C19orf10 1 hits
32 CALCA 1 hits
33 CASP1 1 hits
34 CASP3 1 hits
35 CCDC91 1 hits
36 CCL1 1 hits
37 CCL19 1 hits
38 CCL21 1 hits
39 CCL22 1 hits
40 CCL4 1 hits
41 CCND3 1 hits
42 CCR2 1 hits
43 CCR3 1 hits
44 CCR4 1 hits
45 CCR5 1 hits
46 CCR6 1 hits
47 CCR7 1 hits
48 CCR8 1 hits
49 CCRN4L 1 hits
50 CCT 1 hits
51 CD14 1 hits
52 CD19 1 hits
53 CD1A 1 hits
54 CD1D 1 hits
55 CD2 1 hits
56 CD207 1 hits
57 CD209 1 hits
58 CD22 1 hits
59 CD27 1 hits
60 CD274 1 hits
61 CD28 1 hits
62 CD34 1 hits
63 CD38 1 hits
64 CD40 1 hits
65 CD40LG 1 hits
66 CD44 1 hits
67 CD47 1 hits
68 CD5 1 hits
69 CD52 1 hits
70 CD55 1 hits
71 CD6 1 hits
72 CD68 1 hits
73 CD69 1 hits
74 CD7 1 hits
75 CD79A 1 hits
76 CD80 1 hits
77 CD86 1 hits
78 CD8A 1 hits
79 CD9 1 hits
80 CDKAL1 1 hits
81 CEBPB 1 hits
82 CELIAC3 1 hits
83 CHGA 1 hits
84 CIITA 1 hits
85 CISH 1 hits
86 CLEC7A 1 hits
87 COL1A1 1 hits
88 COL9A3 1 hits
89 COLQ 1 hits
90 CR1 1 hits
91 CRP 1 hits
92 CSF1 1 hits
93 CSF2 1 hits
94 CSF3 1 hits
95 CTAG1B 1 hits
96 CTLA4 1 hits
97 CTSL1 1 hits
98 CX3CL1 1 hits
99 CX3CR1 1 hits
100 CXCL10 1 hits
101 CXCR3 1 hits
102 CXCR4 1 hits
103 CXCR6 1 hits
104 DDIT3 1 hits
105 DEC1 1 hits
106 DLL4 1 hits
107 DNTT 1 hits
108 DPP4 1 hits
109 E2F1 1 hits
110 EBI3 1 hits
111 EDA 1 hits
112 ERVWE1 1 hits
113 FAS 1 hits
114 FASLG 1 hits
115 FCER2 1 hits
116 FCGR3A 1 hits
117 FOXG1 1 hits
118 FOXP2 1 hits
119 FOXP3 1 hits
120 FUT4 1 hits
121 FYB 1 hits
122 G6PC 1 hits
123 G6PC2 1 hits
124 GAD1 1 hits
125 GAD2 1 hits
126 GALT 1 hits
127 GCG 1 hits
128 GIMAP5 1 hits
129 GJA8 1 hits
130 GLP1R 1 hits
131 GLRA1 1 hits
132 GPI 1 hits
133 GZMA 1 hits
134 GZMB 1 hits
135 HAVCR2 1 hits
136 HBB 1 hits
137 HCK 1 hits
138 HIST2H2BE 1 hits
139 HLA-A 1 hits
140 HLA-B 1 hits
141 HLA-DQA1 1 hits
142 HLA-DQB1 1 hits
143 HLA-DRB1 1 hits
144 HLA-DRB5 1 hits
145 HLA-E 1 hits
146 HMOX1 1 hits
147 HP 1 hits
148 IAPP 1 hits
149 ICAM1 1 hits
150 ICOS 1 hits
151 IDDM2 1 hits
152 IFNA1 1 hits
153 IFNG 1 hits
154 IGF1 1 hits
155 IGHD6-13 1 hits
156 IGSF2 1 hits
157 IKZF2 1 hits
158 IL10 1 hits
159 IL12A 1 hits
160 IL12RB2 1 hits
161 IL13 1 hits
162 IL15 1 hits
163 IL17A 1 hits
164 IL17C 1 hits
165 IL18 1 hits
166 IL1B 1 hits
167 IL2 1 hits
168 IL21 1 hits
169 IL21R 1 hits
170 IL27RA 1 hits
171 IL2RA 1 hits
172 IL2RB 1 hits
173 IL4 1 hits
174 IL5 1 hits
175 IL6 1 hits
176 IL6R 1 hits
177 IL7 1 hits
178 IL7R 1 hits
179 IL8 1 hits
180 INS 1 hits
181 IRF1 1 hits
182 IRF4 1 hits
183 IRF8 1 hits
184 ISG20 1 hits
185 ITGA2 1 hits
186 ITGA4 1 hits
187 ITGA5 1 hits
188 ITGAE 1 hits
189 ITGAL 1 hits
190 ITGAM 1 hits
191 ITGAV 1 hits
192 ITGAX 1 hits
193 ITGB1 1 hits
194 ITGB2 1 hits
195 ITGB8 1 hits
196 JAK3 1 hits
197 KCNA3 1 hits
198 KIR2DS1 1 hits
199 KIT 1 hits
200 KLHDC2 1 hits
201 KLRA1 1 hits
202 KLRB1 1 hits
203 KLRD1 1 hits
204 KLRK1 1 hits
205 KRT20 1 hits
206 LAG3 1 hits
207 LBR 1 hits
208 LCK 1 hits
209 LEP 1 hits
210 LEPR 1 hits
211 LGALS1 1 hits
212 LGALS3 1 hits
213 LGALS9 1 hits
214 LMNA 1 hits
215 LPAL2 1 hits
216 LTA 1 hits
217 LTB4R 1 hits
218 LY75 1 hits
219 MAP3K3 1 hits
220 MAPK1 1 hits
221 MAPK14 1 hits
222 MAPK9 1 hits
223 MB 1 hits
224 MBP 1 hits
225 MKI67 1 hits
226 MME 1 hits
227 MOG 1 hits
228 MS4A1 1 hits
229 MS4A2 1 hits
230 MUC1 1 hits
231 MUC3A 1 hits
232 MYH14 1 hits
233 MYH6 1 hits
234 MYH7 1 hits
235 NCAM1 1 hits
236 NFKB1 1 hits
237 NLRP3 1 hits
238 NOS2A 1 hits
239 NOTCH3 1 hits
240 NR3C2 1 hits
241 PARK2 1 hits
242 PCNA 1 hits
243 PDCD1 1 hits
244 PDCD1LG2 1 hits
245 PECAM1 1 hits
246 PHP 1 hits
247 PLN 1 hits
248 PLP1 1 hits
249 PPARG 1 hits
250 PRF1 1 hits
251 PRL 1 hits
252 PRLR 1 hits
253 PRSS16 1 hits
254 PSMB8 1 hits
255 PTPN22 1 hits
256 PTPRC 1 hits
257 PTPRN 1 hits
258 PTPRN2 1 hits
259 PTPRU 1 hits
260 RAG1 1 hits
261 RAG2 1 hits
262 RETN 1 hits
263 RIPK1 1 hits
264 S100A1 1 hits
265 S100B 1 hits
266 SDC1 1 hits
267 SELL 1 hits
268 SELP 1 hits
269 SEMA4D 1 hits
270 SEPHS1 1 hits
271 SLAMF1 1 hits
272 SLAMF6 1 hits
273 SLC37A4 1 hits
274 SLC3A2 1 hits
275 SMCR 1 hits
276 SOCS3 1 hits
277 SOD1 1 hits
278 SPN 1 hits
279 SST 1 hits
280 ST2 1 hits
281 STAT4 1 hits
282 STAT5A 1 hits
283 STAT5B 1 hits
284 STAT6 1 hits
285 T 1 hits
286 TBX21 1 hits
287 TCHH 1 hits
288 TF 1 hits
289 TFRC 1 hits
290 TG 1 hits
291 TGFA 1 hits
292 TGFB1 1 hits
293 TGM1 1 hits
294 TH1L 1 hits
295 THM 1 hits
296 THY1 1 hits
297 TIA1 1 hits
298 TLR1 1 hits
299 TLR2 1 hits
300 TNF 1 hits
301 TNFRSF10A 1 hits
302 TNFRSF11B 1 hits
303 TNFRSF13C 1 hits
304 TNFRSF18 1 hits
305 TNFRSF1A 1 hits
306 TNFRSF25 1 hits
307 TNFRSF4 1 hits
308 TNFRSF8 1 hits
309 TNFRSF9 1 hits
310 TNFSF10 1 hits
311 TNFSF11 1 hits
312 TNFSF13B 1 hits
313 TNFSF8 1 hits
314 TRA 1 hits
315 TRB 1 hits
316 TRBV15 1 hits
317 TRBV2 1 hits
318 TRBV3-1 1 hits
319 TSHR 1 hits
320 TSLP 1 hits
321 TTR 1 hits
322 TYR 1 hits
323 TYROBP 1 hits
324 VCAM1 1 hits
325 VDR 1 hits
326 VEGFA 1 hits
327 VIM 1 hits
328 VIP 1 hits
329 VTCN1 1 hits
330 XBPP1 1 hits
331 ZAP70 1 hits

Related Sentences

# PMID Sentence
1 1279667 To understand better the role of TNF-beta in the regulation of inflammation and type 1 diabetes, we produced transgenic mice in which the murine TNF-beta gene was regulated by the rat insulin II promoter.
2 1279667 The expression of TNF-beta in the pancreas of transgenic mice resulted in a leukocytic inflammatory infiltrate consisting primarily of B220+ IgM+ B cells and CD4+ and CD8+ T cells.
3 1286542 Both the number of CD-4 and CD-8 positive cells increased significantly (p < 0.05), although no change in the CD-4:CD-8 ratio was observed.
4 1303681 No detectable changes in the relative number of CD4+ and CD8+ T-cell subsets in the spleen were seen and there were no obvious differences in splenocyte proliferation rates.
5 1309355 CD4-/CD8-/TCR gamma, delta + T lymphocytes were observed within the islets.
6 1309355 Incubation of the tissue in 15% interleukin 2 induced the migration and initial expansion of the infiltrating cells (66% CD3+ lymphocytes) for up to 2 wk; most T lymphocytes in this initial isolate were CD4+ (92% CD4+ and 7% CD8+).
7 1309355 Long-term anti-CD3 stimulation of this T-lymphocyte population induced the selective growth of CD8+/TCR alpha,beta + (75%) and CD4-/CD8-/TCR gamma,delta + (all V1 delta +) (17%) T lymphocytes.
8 1309355 CD4-/CD8-/TCR gamma, delta + T lymphocytes were observed within the islets.
9 1309355 Incubation of the tissue in 15% interleukin 2 induced the migration and initial expansion of the infiltrating cells (66% CD3+ lymphocytes) for up to 2 wk; most T lymphocytes in this initial isolate were CD4+ (92% CD4+ and 7% CD8+).
10 1309355 Long-term anti-CD3 stimulation of this T-lymphocyte population induced the selective growth of CD8+/TCR alpha,beta + (75%) and CD4-/CD8-/TCR gamma,delta + (all V1 delta +) (17%) T lymphocytes.
11 1309355 CD4-/CD8-/TCR gamma, delta + T lymphocytes were observed within the islets.
12 1309355 Incubation of the tissue in 15% interleukin 2 induced the migration and initial expansion of the infiltrating cells (66% CD3+ lymphocytes) for up to 2 wk; most T lymphocytes in this initial isolate were CD4+ (92% CD4+ and 7% CD8+).
13 1309355 Long-term anti-CD3 stimulation of this T-lymphocyte population induced the selective growth of CD8+/TCR alpha,beta + (75%) and CD4-/CD8-/TCR gamma,delta + (all V1 delta +) (17%) T lymphocytes.
14 1346466 Within T lymphocyte subpopulations, both CD4+ and CD8+ T cells were affected.
15 1355504 The data show that all NOD mice, irrespective of age, sex, and disease progression, possess islet cell-specific CD4+, MHC class II-restricted T cells.
16 1359788 In DP rats, all anti-CD2 MAb except OX53 depleted CD4+ T cells, without depleting natural killer cells or CD8+ T cells.
17 1359788 OX34 injected DR rats were profoundly depleted of CD4+ T cells without evidence of decreased CD8+ T cells, but were not protected against the induction of diabetes by RT6.1+ T-cell depletion and Poly I:C injections.
18 1359788 We conclude that anti-CD2 MAbs protect against BB/Wor autoimmune diabetes by depleting CD4+ T cells, preventing the activation of effector cells, or by blocking CD2/ligand interaction between effector and target cells.
19 1359788 In DP rats, all anti-CD2 MAb except OX53 depleted CD4+ T cells, without depleting natural killer cells or CD8+ T cells.
20 1359788 OX34 injected DR rats were profoundly depleted of CD4+ T cells without evidence of decreased CD8+ T cells, but were not protected against the induction of diabetes by RT6.1+ T-cell depletion and Poly I:C injections.
21 1359788 We conclude that anti-CD2 MAbs protect against BB/Wor autoimmune diabetes by depleting CD4+ T cells, preventing the activation of effector cells, or by blocking CD2/ligand interaction between effector and target cells.
22 1359788 In DP rats, all anti-CD2 MAb except OX53 depleted CD4+ T cells, without depleting natural killer cells or CD8+ T cells.
23 1359788 OX34 injected DR rats were profoundly depleted of CD4+ T cells without evidence of decreased CD8+ T cells, but were not protected against the induction of diabetes by RT6.1+ T-cell depletion and Poly I:C injections.
24 1359788 We conclude that anti-CD2 MAbs protect against BB/Wor autoimmune diabetes by depleting CD4+ T cells, preventing the activation of effector cells, or by blocking CD2/ligand interaction between effector and target cells.
25 1385796 They had a similar distribution into CD4 and CD8 subsets as uninjected controls, and a similar usage and cell surface expression of four T-cell receptor V beta families.
26 1388634 T cell activation is dependent upon calcium influx and protein kinase C activation, with subsequent lymphocyte proliferation dependent upon IL-2.
27 1388634 Analysis of chicken CD3, CD4 and CD8 expression revealed a 39% decrease in peripheral blood CD4+ cells in scleroderma birds, although this decrease was not sufficient to explain the 80-90% decrease observed in proliferation assays and calcium influx.
28 1446803 In this generation of animals, 24% were lymphopenic with decreased numbers of PBL expressing CD5, TCR alpha, and RT6.
29 1446803 Moreover, IEL of the lymphopenic animals exhibited a pattern of staining (increased numbers of TCR alpha beta+CD4+CD8+ and decreased numbers of TCR alpha beta+CD4-CD8+) similar to that of BB DP animals.
30 1446802 CD8 T cells are not required for islet destruction induced by a CD4+ islet-specific T-cell clone.
31 1451948 In order to investigate the role of infiltrating lymphocytes for this altered metabolism, we injected 12- to 13-week-old female NOD mice with monoclonal antibodies directed against either the alpha beta-T cell receptor, CD4+ or CD8+ T cells.
32 1451948 Culture of islets obtained from NOD mice in the presence of the cytokine interleukin-1 beta induced a similar pattern of glucose metabolism as seen earlier in IgG or phosphate-buffered saline treated control NOD mice.
33 1485949 Insulin-dependent diabetes mellitus (IDDM), or type I diabetes, is the end result mainly of a T-cell mediated autoimmune destruction of pancreatic islet beta cells.
34 1485949 The DQ molecules involved in IDDM susceptibility or protection may exert their function either during thymic development of potential self-reactive CD4+ T cells, or by preferential presentation of certain beta-cell derived peptides to CD4+ T cells, or both.
35 1510786 Treatment with IL-1 alpha also inhibited insulitis and hyperglycemia induced by adoptive transfer of pathogenic, polyclonal CD4+8- T cells.
36 1510786 Even after islet-cell destruction, IL-1 alpha injections in diabetic NOD mice normalized plasma glucose levels when administered in combination with insulin, whereas equivalent levels of IL-1 alpha alone did not.
37 1510786 Thus, IL-1 treatment could clinically be an effective immunotherapeutic modality for autoimmune diabetes mellitus by suppressing early disease progression or normalize plasma glucose levels when insulin is present.
38 1516628 Analysis of the roles of CD4+ and CD8+ T cells in autoimmune diabetes of NOD mice using transfer to NOD athymic nude mice.
39 1516628 For the precise analysis of the roles of CD4+ and CD8+ T cells in the pathogenesis of this mouse, these subsets must be transferred into recipients that are completely free of T cells and pathological changes.
40 1516628 To the nude recipients we transferred either one of a highly purified CD4+ or CD8+ T cell subset derived from non-diabetic female NOD mice; any in vivo increase in the contaminating T cell subsets was prevented by injecting the antibody homologous to it.
41 1516628 However, the subsequent transfer of CD8+ T cells into CD4+ T cell-reconstituted recipients induced severe insulitis and hyperglycemia in almost all the recipients.
42 1516628 In these diabetic recipients, we observed severe damage of the pancreatic islets and the infiltration of a large number of CD8+ T cells into the remaining islets; insulin-secreting beta cells were no longer detected.
43 1516628 These results suggest that CD4+ T cells play a predominant role in the development of insulitis and that CD8+ T cells migrate into the islets and are subsequently, with the aid of CD4+ T cells, differentiated into killer cells which act against beta cells.
44 1516628 Analysis of the roles of CD4+ and CD8+ T cells in autoimmune diabetes of NOD mice using transfer to NOD athymic nude mice.
45 1516628 For the precise analysis of the roles of CD4+ and CD8+ T cells in the pathogenesis of this mouse, these subsets must be transferred into recipients that are completely free of T cells and pathological changes.
46 1516628 To the nude recipients we transferred either one of a highly purified CD4+ or CD8+ T cell subset derived from non-diabetic female NOD mice; any in vivo increase in the contaminating T cell subsets was prevented by injecting the antibody homologous to it.
47 1516628 However, the subsequent transfer of CD8+ T cells into CD4+ T cell-reconstituted recipients induced severe insulitis and hyperglycemia in almost all the recipients.
48 1516628 In these diabetic recipients, we observed severe damage of the pancreatic islets and the infiltration of a large number of CD8+ T cells into the remaining islets; insulin-secreting beta cells were no longer detected.
49 1516628 These results suggest that CD4+ T cells play a predominant role in the development of insulitis and that CD8+ T cells migrate into the islets and are subsequently, with the aid of CD4+ T cells, differentiated into killer cells which act against beta cells.
50 1516628 Analysis of the roles of CD4+ and CD8+ T cells in autoimmune diabetes of NOD mice using transfer to NOD athymic nude mice.
51 1516628 For the precise analysis of the roles of CD4+ and CD8+ T cells in the pathogenesis of this mouse, these subsets must be transferred into recipients that are completely free of T cells and pathological changes.
52 1516628 To the nude recipients we transferred either one of a highly purified CD4+ or CD8+ T cell subset derived from non-diabetic female NOD mice; any in vivo increase in the contaminating T cell subsets was prevented by injecting the antibody homologous to it.
53 1516628 However, the subsequent transfer of CD8+ T cells into CD4+ T cell-reconstituted recipients induced severe insulitis and hyperglycemia in almost all the recipients.
54 1516628 In these diabetic recipients, we observed severe damage of the pancreatic islets and the infiltration of a large number of CD8+ T cells into the remaining islets; insulin-secreting beta cells were no longer detected.
55 1516628 These results suggest that CD4+ T cells play a predominant role in the development of insulitis and that CD8+ T cells migrate into the islets and are subsequently, with the aid of CD4+ T cells, differentiated into killer cells which act against beta cells.
56 1516628 Analysis of the roles of CD4+ and CD8+ T cells in autoimmune diabetes of NOD mice using transfer to NOD athymic nude mice.
57 1516628 For the precise analysis of the roles of CD4+ and CD8+ T cells in the pathogenesis of this mouse, these subsets must be transferred into recipients that are completely free of T cells and pathological changes.
58 1516628 To the nude recipients we transferred either one of a highly purified CD4+ or CD8+ T cell subset derived from non-diabetic female NOD mice; any in vivo increase in the contaminating T cell subsets was prevented by injecting the antibody homologous to it.
59 1516628 However, the subsequent transfer of CD8+ T cells into CD4+ T cell-reconstituted recipients induced severe insulitis and hyperglycemia in almost all the recipients.
60 1516628 In these diabetic recipients, we observed severe damage of the pancreatic islets and the infiltration of a large number of CD8+ T cells into the remaining islets; insulin-secreting beta cells were no longer detected.
61 1516628 These results suggest that CD4+ T cells play a predominant role in the development of insulitis and that CD8+ T cells migrate into the islets and are subsequently, with the aid of CD4+ T cells, differentiated into killer cells which act against beta cells.
62 1516628 Analysis of the roles of CD4+ and CD8+ T cells in autoimmune diabetes of NOD mice using transfer to NOD athymic nude mice.
63 1516628 For the precise analysis of the roles of CD4+ and CD8+ T cells in the pathogenesis of this mouse, these subsets must be transferred into recipients that are completely free of T cells and pathological changes.
64 1516628 To the nude recipients we transferred either one of a highly purified CD4+ or CD8+ T cell subset derived from non-diabetic female NOD mice; any in vivo increase in the contaminating T cell subsets was prevented by injecting the antibody homologous to it.
65 1516628 However, the subsequent transfer of CD8+ T cells into CD4+ T cell-reconstituted recipients induced severe insulitis and hyperglycemia in almost all the recipients.
66 1516628 In these diabetic recipients, we observed severe damage of the pancreatic islets and the infiltration of a large number of CD8+ T cells into the remaining islets; insulin-secreting beta cells were no longer detected.
67 1516628 These results suggest that CD4+ T cells play a predominant role in the development of insulitis and that CD8+ T cells migrate into the islets and are subsequently, with the aid of CD4+ T cells, differentiated into killer cells which act against beta cells.
68 1533543 This reduction was predominantly in the CD4 subset, giving rise to a decreased CD4/CD8 lymphocyte ratio.
69 1533543 Those with ICA titres between 5 and 20 JDF units showed abnormalities in both CD3 and CD4 lymphocytes, but not in CD4/CD8 lymphocyte ratio.
70 1533543 The longitudinal study demonstrated that individuals potentially susceptible to the development of type 1 diabetes and who possess high titres of ICA have impairment of CD4/CD8 lymphocyte ratio, mainly due to a reduction in the CD4 subset.
71 1533543 This reduction was predominantly in the CD4 subset, giving rise to a decreased CD4/CD8 lymphocyte ratio.
72 1533543 Those with ICA titres between 5 and 20 JDF units showed abnormalities in both CD3 and CD4 lymphocytes, but not in CD4/CD8 lymphocyte ratio.
73 1533543 The longitudinal study demonstrated that individuals potentially susceptible to the development of type 1 diabetes and who possess high titres of ICA have impairment of CD4/CD8 lymphocyte ratio, mainly due to a reduction in the CD4 subset.
74 1533543 This reduction was predominantly in the CD4 subset, giving rise to a decreased CD4/CD8 lymphocyte ratio.
75 1533543 Those with ICA titres between 5 and 20 JDF units showed abnormalities in both CD3 and CD4 lymphocytes, but not in CD4/CD8 lymphocyte ratio.
76 1533543 The longitudinal study demonstrated that individuals potentially susceptible to the development of type 1 diabetes and who possess high titres of ICA have impairment of CD4/CD8 lymphocyte ratio, mainly due to a reduction in the CD4 subset.
77 1539270 Role of CD4+ and CD8+ T cells in proislet allograft and xenograft rejection.
78 1576920 Both CD4 and CD8 positive cells were in the vicinity of the graft tissue.
79 1600853 The following monoclonal antibodies were used: CD4, CD8, CD57, CD25, HLA-DR.
80 1600853 Interestingly, the patients who exhibited remission presented a statistically higher percentage of positive cells for CD57, HLA-DR and CD25 surface antigens, significantly lower C4 levels and CD4/CD8 ratio and significantly higher IgG levels compared with patients who did not show any remission.
81 1600853 The following monoclonal antibodies were used: CD4, CD8, CD57, CD25, HLA-DR.
82 1600853 Interestingly, the patients who exhibited remission presented a statistically higher percentage of positive cells for CD57, HLA-DR and CD25 surface antigens, significantly lower C4 levels and CD4/CD8 ratio and significantly higher IgG levels compared with patients who did not show any remission.
83 1606724 As measured by flow cytometry, all THI-treated mice had a 60-80% reduction in splenic CD4+ and CD8+ T cells.
84 1617115 Cytofluorometric analysis using specific monoclonal antibodies directed against the T cell antigens Thy-1.2, CD4, CD8, CD4V beta(8.1 + 8.2 + 8.3), and the antigen Mac-1 expressed by mature macrophages and NK cells were used to characterize and quantify the phenotypes of (1) unfractionated and Percoll gradient fractionated in situ islet immune cells isolated from prediabetic and diabetic female NOD mouse spleens.
85 1617115 The percentage of CD8 positive T cells were approximately 10%, and only approximately 4% of the immune cells were Mac-1 positive.
86 1617115 It is concluded that prediabetic NOD mouse in situ islet immune cells are mostly CD4 positive and double negative T cells, and that CD4 and CD8 positive T cells in the intra-islet infiltrate warrants further evaluation as potential effector T cells in target beta-cell destruction.
87 1617115 Cytofluorometric analysis using specific monoclonal antibodies directed against the T cell antigens Thy-1.2, CD4, CD8, CD4V beta(8.1 + 8.2 + 8.3), and the antigen Mac-1 expressed by mature macrophages and NK cells were used to characterize and quantify the phenotypes of (1) unfractionated and Percoll gradient fractionated in situ islet immune cells isolated from prediabetic and diabetic female NOD mouse spleens.
88 1617115 The percentage of CD8 positive T cells were approximately 10%, and only approximately 4% of the immune cells were Mac-1 positive.
89 1617115 It is concluded that prediabetic NOD mouse in situ islet immune cells are mostly CD4 positive and double negative T cells, and that CD4 and CD8 positive T cells in the intra-islet infiltrate warrants further evaluation as potential effector T cells in target beta-cell destruction.
90 1623929 We here show that it is possible to re-establish self tolerance in an animal model of insulin-dependent diabetes mellitus without prior deletion of CD4+ T cells using a short course of therapy with a non-lytic monoclonal antibody to the CD4 adhesion receptor on T cells.
91 1628775 Distinct difference in beta-cell destruction between CD4+ and CD8+ T-cell clones derived from lymphocytes infiltrating the islets of NOD mice.
92 1628775 Six CD4+ and three CD8+ islet-reactive T-cell clones were established from lymphocytes infiltrating the pancreatic islets of NOD mice.
93 1628775 CD8+ CTLs could not be isolated from islets of NOD mice less than 10 wk of age, even if the islets showed lymphocytic infiltration, whereas CD4+ T-cells could be isolated from islets of these younger NOD mice.
94 1628775 On the basis of these observations, we concluded that CD4+ and CD8+ T-cells interact differently with beta-cells at different stages in T-cell--mediated beta-cell destruction.
95 1628775 CD4+ T-cells may secrete cytokines, which in turn activate effector cell populations, whereas CD8+ T-cells may act as a final effector directly involved in beta-cell destruction.
96 1628775 Distinct difference in beta-cell destruction between CD4+ and CD8+ T-cell clones derived from lymphocytes infiltrating the islets of NOD mice.
97 1628775 Six CD4+ and three CD8+ islet-reactive T-cell clones were established from lymphocytes infiltrating the pancreatic islets of NOD mice.
98 1628775 CD8+ CTLs could not be isolated from islets of NOD mice less than 10 wk of age, even if the islets showed lymphocytic infiltration, whereas CD4+ T-cells could be isolated from islets of these younger NOD mice.
99 1628775 On the basis of these observations, we concluded that CD4+ and CD8+ T-cells interact differently with beta-cells at different stages in T-cell--mediated beta-cell destruction.
100 1628775 CD4+ T-cells may secrete cytokines, which in turn activate effector cell populations, whereas CD8+ T-cells may act as a final effector directly involved in beta-cell destruction.
101 1628775 Distinct difference in beta-cell destruction between CD4+ and CD8+ T-cell clones derived from lymphocytes infiltrating the islets of NOD mice.
102 1628775 Six CD4+ and three CD8+ islet-reactive T-cell clones were established from lymphocytes infiltrating the pancreatic islets of NOD mice.
103 1628775 CD8+ CTLs could not be isolated from islets of NOD mice less than 10 wk of age, even if the islets showed lymphocytic infiltration, whereas CD4+ T-cells could be isolated from islets of these younger NOD mice.
104 1628775 On the basis of these observations, we concluded that CD4+ and CD8+ T-cells interact differently with beta-cells at different stages in T-cell--mediated beta-cell destruction.
105 1628775 CD4+ T-cells may secrete cytokines, which in turn activate effector cell populations, whereas CD8+ T-cells may act as a final effector directly involved in beta-cell destruction.
106 1628775 Distinct difference in beta-cell destruction between CD4+ and CD8+ T-cell clones derived from lymphocytes infiltrating the islets of NOD mice.
107 1628775 Six CD4+ and three CD8+ islet-reactive T-cell clones were established from lymphocytes infiltrating the pancreatic islets of NOD mice.
108 1628775 CD8+ CTLs could not be isolated from islets of NOD mice less than 10 wk of age, even if the islets showed lymphocytic infiltration, whereas CD4+ T-cells could be isolated from islets of these younger NOD mice.
109 1628775 On the basis of these observations, we concluded that CD4+ and CD8+ T-cells interact differently with beta-cells at different stages in T-cell--mediated beta-cell destruction.
110 1628775 CD4+ T-cells may secrete cytokines, which in turn activate effector cell populations, whereas CD8+ T-cells may act as a final effector directly involved in beta-cell destruction.
111 1628775 Distinct difference in beta-cell destruction between CD4+ and CD8+ T-cell clones derived from lymphocytes infiltrating the islets of NOD mice.
112 1628775 Six CD4+ and three CD8+ islet-reactive T-cell clones were established from lymphocytes infiltrating the pancreatic islets of NOD mice.
113 1628775 CD8+ CTLs could not be isolated from islets of NOD mice less than 10 wk of age, even if the islets showed lymphocytic infiltration, whereas CD4+ T-cells could be isolated from islets of these younger NOD mice.
114 1628775 On the basis of these observations, we concluded that CD4+ and CD8+ T-cells interact differently with beta-cells at different stages in T-cell--mediated beta-cell destruction.
115 1628775 CD4+ T-cells may secrete cytokines, which in turn activate effector cell populations, whereas CD8+ T-cells may act as a final effector directly involved in beta-cell destruction.
116 1670607 CD8+ T cell homing to the pancreas in the nonobese diabetic mouse is CD4+ T cell-dependent.
117 1670607 The adoptive transfer of type I diabetes in nonobese diabetic mice requires the contribution of both CD4+ and CD8+ T cells.
118 1670607 None of the animals injected with either CD4+ or CD8+ T cells became overtly diabetic during the 30 days of observation whereas 8 of 23 mice inoculated with a mixture of the two subsets developed glycosuria and hyperglycemia.
119 1670607 However, insulitis was found in 6 of the 13 mice injected with CD4+ T cells whereas only 1 of the 9 mice injected with CD8+ T cells showed marginal infiltration of the pancreas.
120 1670607 CD4+ T cells, which have the capacity to home to the pancreas, promote in turn the influx of CD8+ effector T cells that do not by themselves accumulate in this organ.
121 1670607 CD8+ T cell homing to the pancreas in the nonobese diabetic mouse is CD4+ T cell-dependent.
122 1670607 The adoptive transfer of type I diabetes in nonobese diabetic mice requires the contribution of both CD4+ and CD8+ T cells.
123 1670607 None of the animals injected with either CD4+ or CD8+ T cells became overtly diabetic during the 30 days of observation whereas 8 of 23 mice inoculated with a mixture of the two subsets developed glycosuria and hyperglycemia.
124 1670607 However, insulitis was found in 6 of the 13 mice injected with CD4+ T cells whereas only 1 of the 9 mice injected with CD8+ T cells showed marginal infiltration of the pancreas.
125 1670607 CD4+ T cells, which have the capacity to home to the pancreas, promote in turn the influx of CD8+ effector T cells that do not by themselves accumulate in this organ.
126 1670607 CD8+ T cell homing to the pancreas in the nonobese diabetic mouse is CD4+ T cell-dependent.
127 1670607 The adoptive transfer of type I diabetes in nonobese diabetic mice requires the contribution of both CD4+ and CD8+ T cells.
128 1670607 None of the animals injected with either CD4+ or CD8+ T cells became overtly diabetic during the 30 days of observation whereas 8 of 23 mice inoculated with a mixture of the two subsets developed glycosuria and hyperglycemia.
129 1670607 However, insulitis was found in 6 of the 13 mice injected with CD4+ T cells whereas only 1 of the 9 mice injected with CD8+ T cells showed marginal infiltration of the pancreas.
130 1670607 CD4+ T cells, which have the capacity to home to the pancreas, promote in turn the influx of CD8+ effector T cells that do not by themselves accumulate in this organ.
131 1670607 CD8+ T cell homing to the pancreas in the nonobese diabetic mouse is CD4+ T cell-dependent.
132 1670607 The adoptive transfer of type I diabetes in nonobese diabetic mice requires the contribution of both CD4+ and CD8+ T cells.
133 1670607 None of the animals injected with either CD4+ or CD8+ T cells became overtly diabetic during the 30 days of observation whereas 8 of 23 mice inoculated with a mixture of the two subsets developed glycosuria and hyperglycemia.
134 1670607 However, insulitis was found in 6 of the 13 mice injected with CD4+ T cells whereas only 1 of the 9 mice injected with CD8+ T cells showed marginal infiltration of the pancreas.
135 1670607 CD4+ T cells, which have the capacity to home to the pancreas, promote in turn the influx of CD8+ effector T cells that do not by themselves accumulate in this organ.
136 1670607 CD8+ T cell homing to the pancreas in the nonobese diabetic mouse is CD4+ T cell-dependent.
137 1670607 The adoptive transfer of type I diabetes in nonobese diabetic mice requires the contribution of both CD4+ and CD8+ T cells.
138 1670607 None of the animals injected with either CD4+ or CD8+ T cells became overtly diabetic during the 30 days of observation whereas 8 of 23 mice inoculated with a mixture of the two subsets developed glycosuria and hyperglycemia.
139 1670607 However, insulitis was found in 6 of the 13 mice injected with CD4+ T cells whereas only 1 of the 9 mice injected with CD8+ T cells showed marginal infiltration of the pancreas.
140 1670607 CD4+ T cells, which have the capacity to home to the pancreas, promote in turn the influx of CD8+ effector T cells that do not by themselves accumulate in this organ.
141 1675318 A possible target antigen was suggested by the proliferation of CD4 T cells from a newly diagnosed patient in response to a 38 kD polypeptide of the insulin-secretory-granule membrane.
142 1677834 Abnormalities within CD4 and CD8 T lymphocytes subsets in type 1 (insulin-dependent) diabetes.
143 1677834 Monoclonal antibodies labelled with various fluorochromes were used here to define the percentages of subsets, and especially to divide CD4+ (helper/inducer) and CD8+ (suppressor/cytotoxic) cells into phenotypic subgroups.
144 1677834 Blood samples were analysed from 25 patients (age 10.1 +/- 3.7 years) with recently diagnosed insulin-dependent diabetes mellitus (IDDM) and 25 age- and sex-matched control subjects.
145 1677834 The percentages of CD4+ cells and CD4+CD45RA+ cells described as naive T helper cells or suppressor/inducers were increased in the IDDM patients (P less than 0.05 and P less than 0.05.
146 1677834 The percentage of CD8+CD11b+ cells containing suppressor/effector lymphocytes was decreased in the IDDM patients as compared with the controls (P less than 0.01) but no significant difference was seen in total CD8+ cells.
147 1677834 Abnormalities within CD4 and CD8 T lymphocytes subsets in type 1 (insulin-dependent) diabetes.
148 1677834 Monoclonal antibodies labelled with various fluorochromes were used here to define the percentages of subsets, and especially to divide CD4+ (helper/inducer) and CD8+ (suppressor/cytotoxic) cells into phenotypic subgroups.
149 1677834 Blood samples were analysed from 25 patients (age 10.1 +/- 3.7 years) with recently diagnosed insulin-dependent diabetes mellitus (IDDM) and 25 age- and sex-matched control subjects.
150 1677834 The percentages of CD4+ cells and CD4+CD45RA+ cells described as naive T helper cells or suppressor/inducers were increased in the IDDM patients (P less than 0.05 and P less than 0.05.
151 1677834 The percentage of CD8+CD11b+ cells containing suppressor/effector lymphocytes was decreased in the IDDM patients as compared with the controls (P less than 0.01) but no significant difference was seen in total CD8+ cells.
152 1677834 Abnormalities within CD4 and CD8 T lymphocytes subsets in type 1 (insulin-dependent) diabetes.
153 1677834 Monoclonal antibodies labelled with various fluorochromes were used here to define the percentages of subsets, and especially to divide CD4+ (helper/inducer) and CD8+ (suppressor/cytotoxic) cells into phenotypic subgroups.
154 1677834 Blood samples were analysed from 25 patients (age 10.1 +/- 3.7 years) with recently diagnosed insulin-dependent diabetes mellitus (IDDM) and 25 age- and sex-matched control subjects.
155 1677834 The percentages of CD4+ cells and CD4+CD45RA+ cells described as naive T helper cells or suppressor/inducers were increased in the IDDM patients (P less than 0.05 and P less than 0.05.
156 1677834 The percentage of CD8+CD11b+ cells containing suppressor/effector lymphocytes was decreased in the IDDM patients as compared with the controls (P less than 0.01) but no significant difference was seen in total CD8+ cells.
157 1679332 Pancreatic T lymphocytes from NOD-Wehi mice, which have an incidence of spontaneous diabetes of less than 5%, had a CD4:CD8 ratio of 1.25 +/- 0.23 compared with 2.44 +/- 0.31 for peripheral blood lymphocytes.
158 1679332 After cyclophosphamide, the CD4:CD8 ratio of pancreatic lymphocytes increased to 2.30 +/- 0.24 at day 7.
159 1679332 T lymphocytes bearing IL-2 receptors increased two- to three-fold in number and their secretion of GM-CSF/IL-3 and IFN-gamma increased to a maximum on day 7.
160 1679332 Pancreatic insulin content and mRNA levels declined sharply between days 10 and 12, at which time the majority of pancreatic T lymphocytes in hyperglycaemic mice were CD8+ (CD4:CD8 ratio 0.63 +/- 0.04 compared to 4.14 +/- 1.05 in peripheral blood).
161 1679332 The pancreatic T lymphocyte CD4:CD8 ratio in prediabetic NOD-Lt mice, which have an incidence of spontaneous diabetes of about 60% at 150 days, was similar to that in untreated NOD-Wehi mice, but 25% of their pancreatic CD8 T lymphocytes were IL-2-receptor positive.
162 1679332 The earliest change after cyclophosphamide was an increase in activated, predominantly CD4+ T lymphocytes; with the development of beta cell destruction and hyperglycaemia, pancreatic T lymphocytes were, as in human IDDM, predominantly CD8+.
163 1679332 Pancreatic T lymphocytes from NOD-Wehi mice, which have an incidence of spontaneous diabetes of less than 5%, had a CD4:CD8 ratio of 1.25 +/- 0.23 compared with 2.44 +/- 0.31 for peripheral blood lymphocytes.
164 1679332 After cyclophosphamide, the CD4:CD8 ratio of pancreatic lymphocytes increased to 2.30 +/- 0.24 at day 7.
165 1679332 T lymphocytes bearing IL-2 receptors increased two- to three-fold in number and their secretion of GM-CSF/IL-3 and IFN-gamma increased to a maximum on day 7.
166 1679332 Pancreatic insulin content and mRNA levels declined sharply between days 10 and 12, at which time the majority of pancreatic T lymphocytes in hyperglycaemic mice were CD8+ (CD4:CD8 ratio 0.63 +/- 0.04 compared to 4.14 +/- 1.05 in peripheral blood).
167 1679332 The pancreatic T lymphocyte CD4:CD8 ratio in prediabetic NOD-Lt mice, which have an incidence of spontaneous diabetes of about 60% at 150 days, was similar to that in untreated NOD-Wehi mice, but 25% of their pancreatic CD8 T lymphocytes were IL-2-receptor positive.
168 1679332 The earliest change after cyclophosphamide was an increase in activated, predominantly CD4+ T lymphocytes; with the development of beta cell destruction and hyperglycaemia, pancreatic T lymphocytes were, as in human IDDM, predominantly CD8+.
169 1679332 Pancreatic T lymphocytes from NOD-Wehi mice, which have an incidence of spontaneous diabetes of less than 5%, had a CD4:CD8 ratio of 1.25 +/- 0.23 compared with 2.44 +/- 0.31 for peripheral blood lymphocytes.
170 1679332 After cyclophosphamide, the CD4:CD8 ratio of pancreatic lymphocytes increased to 2.30 +/- 0.24 at day 7.
171 1679332 T lymphocytes bearing IL-2 receptors increased two- to three-fold in number and their secretion of GM-CSF/IL-3 and IFN-gamma increased to a maximum on day 7.
172 1679332 Pancreatic insulin content and mRNA levels declined sharply between days 10 and 12, at which time the majority of pancreatic T lymphocytes in hyperglycaemic mice were CD8+ (CD4:CD8 ratio 0.63 +/- 0.04 compared to 4.14 +/- 1.05 in peripheral blood).
173 1679332 The pancreatic T lymphocyte CD4:CD8 ratio in prediabetic NOD-Lt mice, which have an incidence of spontaneous diabetes of about 60% at 150 days, was similar to that in untreated NOD-Wehi mice, but 25% of their pancreatic CD8 T lymphocytes were IL-2-receptor positive.
174 1679332 The earliest change after cyclophosphamide was an increase in activated, predominantly CD4+ T lymphocytes; with the development of beta cell destruction and hyperglycaemia, pancreatic T lymphocytes were, as in human IDDM, predominantly CD8+.
175 1679332 Pancreatic T lymphocytes from NOD-Wehi mice, which have an incidence of spontaneous diabetes of less than 5%, had a CD4:CD8 ratio of 1.25 +/- 0.23 compared with 2.44 +/- 0.31 for peripheral blood lymphocytes.
176 1679332 After cyclophosphamide, the CD4:CD8 ratio of pancreatic lymphocytes increased to 2.30 +/- 0.24 at day 7.
177 1679332 T lymphocytes bearing IL-2 receptors increased two- to three-fold in number and their secretion of GM-CSF/IL-3 and IFN-gamma increased to a maximum on day 7.
178 1679332 Pancreatic insulin content and mRNA levels declined sharply between days 10 and 12, at which time the majority of pancreatic T lymphocytes in hyperglycaemic mice were CD8+ (CD4:CD8 ratio 0.63 +/- 0.04 compared to 4.14 +/- 1.05 in peripheral blood).
179 1679332 The pancreatic T lymphocyte CD4:CD8 ratio in prediabetic NOD-Lt mice, which have an incidence of spontaneous diabetes of about 60% at 150 days, was similar to that in untreated NOD-Wehi mice, but 25% of their pancreatic CD8 T lymphocytes were IL-2-receptor positive.
180 1679332 The earliest change after cyclophosphamide was an increase in activated, predominantly CD4+ T lymphocytes; with the development of beta cell destruction and hyperglycaemia, pancreatic T lymphocytes were, as in human IDDM, predominantly CD8+.
181 1679332 Pancreatic T lymphocytes from NOD-Wehi mice, which have an incidence of spontaneous diabetes of less than 5%, had a CD4:CD8 ratio of 1.25 +/- 0.23 compared with 2.44 +/- 0.31 for peripheral blood lymphocytes.
182 1679332 After cyclophosphamide, the CD4:CD8 ratio of pancreatic lymphocytes increased to 2.30 +/- 0.24 at day 7.
183 1679332 T lymphocytes bearing IL-2 receptors increased two- to three-fold in number and their secretion of GM-CSF/IL-3 and IFN-gamma increased to a maximum on day 7.
184 1679332 Pancreatic insulin content and mRNA levels declined sharply between days 10 and 12, at which time the majority of pancreatic T lymphocytes in hyperglycaemic mice were CD8+ (CD4:CD8 ratio 0.63 +/- 0.04 compared to 4.14 +/- 1.05 in peripheral blood).
185 1679332 The pancreatic T lymphocyte CD4:CD8 ratio in prediabetic NOD-Lt mice, which have an incidence of spontaneous diabetes of about 60% at 150 days, was similar to that in untreated NOD-Wehi mice, but 25% of their pancreatic CD8 T lymphocytes were IL-2-receptor positive.
186 1679332 The earliest change after cyclophosphamide was an increase in activated, predominantly CD4+ T lymphocytes; with the development of beta cell destruction and hyperglycaemia, pancreatic T lymphocytes were, as in human IDDM, predominantly CD8+.
187 1688592 The levels of expression of CD4, TCR-alpha beta within each thymocyte subset were comparable in BBn and BBd animals as were the anti-TCR-induced proliferative responses of their CD4+8- and CD4-8+ thymocytes.
188 1696864 The peripheral blood lymphocytes from patients with insulin-dependent diabetes mellitus (IDDM) and healthy controls were analysed for the HLA-DR+, interleukin-2 receptor-positive (IL-2R+) activating antigens, and for CD45R+ and CDw29+ subsets from the purified CD4+ and CD8+ T cells populations.
189 1696864 Patients with IDDM had an increased percentage of HLA-DR+ and IL-2R+ cells in both CD4+ and CD8+ T cells.
190 1696864 However, the percentage of CD4+ CD45R+ suppressor/inducer T cells were decreased and CD4+ CDw29+ helper/inducer T cells increased in all patients with IDDM, compared with healthy controls.
191 1696864 Thus, IDDM patients exhibit a deficiency in the CD4+ CD45R+ suppressor/inducer T cell subsets, which is probably related to the autoimmune phenomenon in this disease.
192 1696864 In contrast, the percentage of CD8+ CDw29+ T cell subsets showed no major differences between patients with IDDM and controls.
193 1696864 An alteration in the CD4+ CD45R+ and CD4+ CDw29+ T cell subsets appears to be a characteristic feature, and may relate to the impaired cell-mediated immunity in IDDM.
194 1696864 The peripheral blood lymphocytes from patients with insulin-dependent diabetes mellitus (IDDM) and healthy controls were analysed for the HLA-DR+, interleukin-2 receptor-positive (IL-2R+) activating antigens, and for CD45R+ and CDw29+ subsets from the purified CD4+ and CD8+ T cells populations.
195 1696864 Patients with IDDM had an increased percentage of HLA-DR+ and IL-2R+ cells in both CD4+ and CD8+ T cells.
196 1696864 However, the percentage of CD4+ CD45R+ suppressor/inducer T cells were decreased and CD4+ CDw29+ helper/inducer T cells increased in all patients with IDDM, compared with healthy controls.
197 1696864 Thus, IDDM patients exhibit a deficiency in the CD4+ CD45R+ suppressor/inducer T cell subsets, which is probably related to the autoimmune phenomenon in this disease.
198 1696864 In contrast, the percentage of CD8+ CDw29+ T cell subsets showed no major differences between patients with IDDM and controls.
199 1696864 An alteration in the CD4+ CD45R+ and CD4+ CDw29+ T cell subsets appears to be a characteristic feature, and may relate to the impaired cell-mediated immunity in IDDM.
200 1696864 The peripheral blood lymphocytes from patients with insulin-dependent diabetes mellitus (IDDM) and healthy controls were analysed for the HLA-DR+, interleukin-2 receptor-positive (IL-2R+) activating antigens, and for CD45R+ and CDw29+ subsets from the purified CD4+ and CD8+ T cells populations.
201 1696864 Patients with IDDM had an increased percentage of HLA-DR+ and IL-2R+ cells in both CD4+ and CD8+ T cells.
202 1696864 However, the percentage of CD4+ CD45R+ suppressor/inducer T cells were decreased and CD4+ CDw29+ helper/inducer T cells increased in all patients with IDDM, compared with healthy controls.
203 1696864 Thus, IDDM patients exhibit a deficiency in the CD4+ CD45R+ suppressor/inducer T cell subsets, which is probably related to the autoimmune phenomenon in this disease.
204 1696864 In contrast, the percentage of CD8+ CDw29+ T cell subsets showed no major differences between patients with IDDM and controls.
205 1696864 An alteration in the CD4+ CD45R+ and CD4+ CDw29+ T cell subsets appears to be a characteristic feature, and may relate to the impaired cell-mediated immunity in IDDM.
206 1696864 The peripheral blood lymphocytes from patients with insulin-dependent diabetes mellitus (IDDM) and healthy controls were analysed for the HLA-DR+, interleukin-2 receptor-positive (IL-2R+) activating antigens, and for CD45R+ and CDw29+ subsets from the purified CD4+ and CD8+ T cells populations.
207 1696864 Patients with IDDM had an increased percentage of HLA-DR+ and IL-2R+ cells in both CD4+ and CD8+ T cells.
208 1696864 However, the percentage of CD4+ CD45R+ suppressor/inducer T cells were decreased and CD4+ CDw29+ helper/inducer T cells increased in all patients with IDDM, compared with healthy controls.
209 1696864 Thus, IDDM patients exhibit a deficiency in the CD4+ CD45R+ suppressor/inducer T cell subsets, which is probably related to the autoimmune phenomenon in this disease.
210 1696864 In contrast, the percentage of CD8+ CDw29+ T cell subsets showed no major differences between patients with IDDM and controls.
211 1696864 An alteration in the CD4+ CD45R+ and CD4+ CDw29+ T cell subsets appears to be a characteristic feature, and may relate to the impaired cell-mediated immunity in IDDM.
212 1696864 The peripheral blood lymphocytes from patients with insulin-dependent diabetes mellitus (IDDM) and healthy controls were analysed for the HLA-DR+, interleukin-2 receptor-positive (IL-2R+) activating antigens, and for CD45R+ and CDw29+ subsets from the purified CD4+ and CD8+ T cells populations.
213 1696864 Patients with IDDM had an increased percentage of HLA-DR+ and IL-2R+ cells in both CD4+ and CD8+ T cells.
214 1696864 However, the percentage of CD4+ CD45R+ suppressor/inducer T cells were decreased and CD4+ CDw29+ helper/inducer T cells increased in all patients with IDDM, compared with healthy controls.
215 1696864 Thus, IDDM patients exhibit a deficiency in the CD4+ CD45R+ suppressor/inducer T cell subsets, which is probably related to the autoimmune phenomenon in this disease.
216 1696864 In contrast, the percentage of CD8+ CDw29+ T cell subsets showed no major differences between patients with IDDM and controls.
217 1696864 An alteration in the CD4+ CD45R+ and CD4+ CDw29+ T cell subsets appears to be a characteristic feature, and may relate to the impaired cell-mediated immunity in IDDM.
218 1727731 T-lymphocyte lines specific for glutamic acid decarboxylase (GAD) the 64K beta-cell antigen of IDDM.
219 1727731 Insulin-dependent diabetes mellitus (IDDM) is viewed as a thymus-dependent autoimmune disease, although the specific beta-cell autoantigen or autoantigens remain unknown.
220 1727731 In this study, we describe the isolation of GAD-specific T-lymphocyte lines from BB rats, an animal model of IDDM.
221 1727731 GAD-specific T lymphocytes were obtained by culture with interleukin 2 and repeated stimulation with GAD in the presence of BB rat thymic antigen-presenting cells.
222 1727731 Four stable, CD4+, MHC (RT1u)-restricted T-lymphocyte lines were isolated.
223 1727731 They proliferate selectively in the presence of GAD and secrete interleukin 2 and interferon-gamma.
224 1737783 Human CD4, a monomeric T cell surface glycoprotein, is required for T helper cell activation and is also the receptor for the human immunodeficiency virus.
225 1823558 Flowcytometry analysis demonstrated that anti-asialo GM1 antibody-positive cells had disappeared from the spleens of anti-asialo GM1 antibody-injected mice but no suppression of CD8+ and CD4+ cells could be demonstrated.
226 1826279 We demonstrate here that an altered (with respect to control BALB/cJ mice) thymic T-lymphocyte maturation reflected by a depletion (approximately 12%) of CD4+CD8+ T lymphocytes and a reciprocal increase in CD4-CD8- T lymphocytes precedes the onset of diabetes.
227 1826279 By onset of diabetes, an even greater decrease (approximately 35%) of CD4+CD8+ and a reciprocal increase of CD4-CD8- T lymphocytes were apparent and accompanied by the same depletion (3%) of V beta 8 lo T lymphocytes.
228 1826279 Administration of cyclophosphamide (CY), which accelerates the appearance of diabetes in NOD mice, caused similar depletions of CD4+CD8+ and V beta 8lo thymic T lymphocytes.
229 1826279 We demonstrate here that an altered (with respect to control BALB/cJ mice) thymic T-lymphocyte maturation reflected by a depletion (approximately 12%) of CD4+CD8+ T lymphocytes and a reciprocal increase in CD4-CD8- T lymphocytes precedes the onset of diabetes.
230 1826279 By onset of diabetes, an even greater decrease (approximately 35%) of CD4+CD8+ and a reciprocal increase of CD4-CD8- T lymphocytes were apparent and accompanied by the same depletion (3%) of V beta 8 lo T lymphocytes.
231 1826279 Administration of cyclophosphamide (CY), which accelerates the appearance of diabetes in NOD mice, caused similar depletions of CD4+CD8+ and V beta 8lo thymic T lymphocytes.
232 1826279 We demonstrate here that an altered (with respect to control BALB/cJ mice) thymic T-lymphocyte maturation reflected by a depletion (approximately 12%) of CD4+CD8+ T lymphocytes and a reciprocal increase in CD4-CD8- T lymphocytes precedes the onset of diabetes.
233 1826279 By onset of diabetes, an even greater decrease (approximately 35%) of CD4+CD8+ and a reciprocal increase of CD4-CD8- T lymphocytes were apparent and accompanied by the same depletion (3%) of V beta 8 lo T lymphocytes.
234 1826279 Administration of cyclophosphamide (CY), which accelerates the appearance of diabetes in NOD mice, caused similar depletions of CD4+CD8+ and V beta 8lo thymic T lymphocytes.
235 1826646 Depletion of CD8+ T lymphocytes from the PBMC of healthy subjects abolished their suppressive capacity, while depletion of CD4+ T lymphocytes and pre-incubation with CD3 monoclonal antibodies had no effect.
236 1827712 To investigate the possible role of CD4+ T lymphocyte immunoregulatory abnormalities in the pathogenesis of human insulin-dependent diabetes mellitus (IDD), we studied the in vitro function of CD4+ helper/inducer and suppressor/inducer T-cell subpopulations in 25 high risk non-diabetic individuals who tested positive for islet-cell antibodies (ICA).
237 1827815 This T cell defect is not due to a difference in the level of CD3 and IL-2R expression by NOD and BALB/c thymocytes, and both NOD CD4+ CD8- and CD4- CD8+ mature thymic T cells respond poorly to Con A.
238 1838123 The subsets of Leu11+Leu7+, Leu11-Leu7+ and Leu7+Leu2+ were decreased significantly in peripheral Natural Killer cells.
239 1838123 The CD4/CD8 ratio, and the IL2+Leu2+ subset, showed a negative regressions with HbA1, and the diabetic duration, respectively.
240 1865367 Both Lyt2+ (CD8+) and L3T4+ (CD4+) enriched T cell populations showed a labeling response to Con A.
241 1865761 Dual-color analysis of lymphocyte subpopulations demonstrated that acute (2 hour) restraint stress suppressed mitogen-stimulated increases in [Ca2+]i in CD4+ T cells, but enhanced [Ca2+]i in CD8+ T cells.
242 1865761 Within T lymphocyte subpopulations, both acute and chronic stress predominantly affected CD4+ T cells, which may induce a functional reversal of the CD4/CD8 ratios in vivo.
243 1865761 Dual-color analysis of lymphocyte subpopulations demonstrated that acute (2 hour) restraint stress suppressed mitogen-stimulated increases in [Ca2+]i in CD4+ T cells, but enhanced [Ca2+]i in CD8+ T cells.
244 1865761 Within T lymphocyte subpopulations, both acute and chronic stress predominantly affected CD4+ T cells, which may induce a functional reversal of the CD4/CD8 ratios in vivo.
245 1899142 The role of CD4+ and CD8+ T cells in the destruction of islet grafts by spontaneously diabetic mice.
246 1899142 In disease-transfer experiments, the activation of diabetes has been reported to require participation of both CD4+ and CD8+ T-cell subsets.
247 1899142 These findings seem to indicate that the CD4+ cells are the helper cells for the activation of cytotoxic CD8+ cells that directly destroy islet beta cells in type I diabetes.
248 1899142 In this report we challenge this interpretation because of two observations: (i) Destruction of syngeneic islet grafts by spontaneously diabetic NOD mice (disease recurrence) is CD4+ and not CD8+ T-cell dependent.
249 1899142 The role of CD4+ and CD8+ T cells in the destruction of islet grafts by spontaneously diabetic mice.
250 1899142 In disease-transfer experiments, the activation of diabetes has been reported to require participation of both CD4+ and CD8+ T-cell subsets.
251 1899142 These findings seem to indicate that the CD4+ cells are the helper cells for the activation of cytotoxic CD8+ cells that directly destroy islet beta cells in type I diabetes.
252 1899142 In this report we challenge this interpretation because of two observations: (i) Destruction of syngeneic islet grafts by spontaneously diabetic NOD mice (disease recurrence) is CD4+ and not CD8+ T-cell dependent.
253 1899142 The role of CD4+ and CD8+ T cells in the destruction of islet grafts by spontaneously diabetic mice.
254 1899142 In disease-transfer experiments, the activation of diabetes has been reported to require participation of both CD4+ and CD8+ T-cell subsets.
255 1899142 These findings seem to indicate that the CD4+ cells are the helper cells for the activation of cytotoxic CD8+ cells that directly destroy islet beta cells in type I diabetes.
256 1899142 In this report we challenge this interpretation because of two observations: (i) Destruction of syngeneic islet grafts by spontaneously diabetic NOD mice (disease recurrence) is CD4+ and not CD8+ T-cell dependent.
257 1899142 The role of CD4+ and CD8+ T cells in the destruction of islet grafts by spontaneously diabetic mice.
258 1899142 In disease-transfer experiments, the activation of diabetes has been reported to require participation of both CD4+ and CD8+ T-cell subsets.
259 1899142 These findings seem to indicate that the CD4+ cells are the helper cells for the activation of cytotoxic CD8+ cells that directly destroy islet beta cells in type I diabetes.
260 1899142 In this report we challenge this interpretation because of two observations: (i) Destruction of syngeneic islet grafts by spontaneously diabetic NOD mice (disease recurrence) is CD4+ and not CD8+ T-cell dependent.
261 1902177 In humans and non-obese diabetic mice (NOD), insulin-dependent diabetes mellitus (IDDM) results from a spontaneous T cell-dependent autoimmune destruction of the insulin-producing pancreatic beta cells.
262 1902177 To resolve the cellular basis of this intricate network of pathogenic CD4+ and CD8+ T cells and the role of T cells in suppressive immune phenomena.
263 1902177 A CD4+ T cell clone, IS-3S7D, proliferates in response to islet antigen(s) and its transfer into prediabetic NOD mice promotes the rapid onset of IDDM.
264 1902177 An interleukin 2 (IL 2)-dependent noncytolytic, V beta 11+ CD8+.
265 1902177 The present study, which documents the presence of CD4+ diabetogenic T cell clones and CD8+ T cell clones that dampen autoimmunity, gives tangible evidence that opposing autoimmune processes may determine whether an autoimmune-prone host develops frank disease.
266 1902177 In humans and non-obese diabetic mice (NOD), insulin-dependent diabetes mellitus (IDDM) results from a spontaneous T cell-dependent autoimmune destruction of the insulin-producing pancreatic beta cells.
267 1902177 To resolve the cellular basis of this intricate network of pathogenic CD4+ and CD8+ T cells and the role of T cells in suppressive immune phenomena.
268 1902177 A CD4+ T cell clone, IS-3S7D, proliferates in response to islet antigen(s) and its transfer into prediabetic NOD mice promotes the rapid onset of IDDM.
269 1902177 An interleukin 2 (IL 2)-dependent noncytolytic, V beta 11+ CD8+.
270 1902177 The present study, which documents the presence of CD4+ diabetogenic T cell clones and CD8+ T cell clones that dampen autoimmunity, gives tangible evidence that opposing autoimmune processes may determine whether an autoimmune-prone host develops frank disease.
271 1902177 In humans and non-obese diabetic mice (NOD), insulin-dependent diabetes mellitus (IDDM) results from a spontaneous T cell-dependent autoimmune destruction of the insulin-producing pancreatic beta cells.
272 1902177 To resolve the cellular basis of this intricate network of pathogenic CD4+ and CD8+ T cells and the role of T cells in suppressive immune phenomena.
273 1902177 A CD4+ T cell clone, IS-3S7D, proliferates in response to islet antigen(s) and its transfer into prediabetic NOD mice promotes the rapid onset of IDDM.
274 1902177 An interleukin 2 (IL 2)-dependent noncytolytic, V beta 11+ CD8+.
275 1902177 The present study, which documents the presence of CD4+ diabetogenic T cell clones and CD8+ T cell clones that dampen autoimmunity, gives tangible evidence that opposing autoimmune processes may determine whether an autoimmune-prone host develops frank disease.
276 1902501 All clones expressed CD4, but not CD8, and responded to islet cells from various strains of mice in the context of I-ANOD.
277 1903736 The development of insulin-dependent diabetes mellitus in non-obese diabetic mice: the role of CD4+ and CD8+ T cells.
278 1907661 Concanavalin A (Con A) administered in vivo inhibited the development of insulin-dependent diabetes mellitus (IDDM) in nonobese diabetic mice.
279 1907661 The treatment increased the frequency of "blast-sized" cells in vivo and decreased the CD4+/CD8+ ratio among resting splenocytes.
280 1948748 Indirect immunofluorescence and monoclonal antibodies to leukocytic differentiated antigens CD3, CD4, CD8, CD22, CD25, CD71 and HLA-DR were used.
281 1948748 It has been demonstrated that the pre-nephrotic stage of DN is marked by the normal content of the main subpopulations of peripheral lymphocytes (CD3, CD4, CD8 and CD22-positive).
282 1948748 Indirect immunofluorescence and monoclonal antibodies to leukocytic differentiated antigens CD3, CD4, CD8, CD22, CD25, CD71 and HLA-DR were used.
283 1948748 It has been demonstrated that the pre-nephrotic stage of DN is marked by the normal content of the main subpopulations of peripheral lymphocytes (CD3, CD4, CD8 and CD22-positive).
284 1975826 CD4+CD8- Th cells from DBA/1 LacJ mice with type II collagen arthritis expressed low levels of type n K+ channels, and CD4-CD8+ T cells (cytotoxic) showed small numbers of type l or n' K+ channels, like their phenotypic counterparts in normal mice.
285 2018977 Of particular interest was the RT6+ T cell subset, that appears to have important immunoregulatory properties in a rat model of autoimmune insulin-dependent diabetes mellitus.
286 2018977 Analysis of other lymphocyte subpopulations demonstrated a decrease of CD4+ and CD5+ cells, whereas B cells as well as CD8+, IL-2 receptor+, and MHC class II+ subsets showed no consistent correlation with the onset or resolution of the autoimmune process.
287 2022315 However, within T cell subpopulations, CD4+ but not CD8+ cells were affected.
288 2022315 Adrenalectomy abolished this effect of morphine in CD4+ T but not CD4-, CD8- spleen cells (most likely Thy 1.2- B cells).
289 2022315 Moreover, simultaneous administration of the opiate antagonist naltrexone blocked the effect of morphine in CD4-, CD8- spleen cells, but not in CD4+ T cells.
290 2022315 However, within T cell subpopulations, CD4+ but not CD8+ cells were affected.
291 2022315 Adrenalectomy abolished this effect of morphine in CD4+ T but not CD4-, CD8- spleen cells (most likely Thy 1.2- B cells).
292 2022315 Moreover, simultaneous administration of the opiate antagonist naltrexone blocked the effect of morphine in CD4-, CD8- spleen cells, but not in CD4+ T cells.
293 2022315 However, within T cell subpopulations, CD4+ but not CD8+ cells were affected.
294 2022315 Adrenalectomy abolished this effect of morphine in CD4+ T but not CD4-, CD8- spleen cells (most likely Thy 1.2- B cells).
295 2022315 Moreover, simultaneous administration of the opiate antagonist naltrexone blocked the effect of morphine in CD4-, CD8- spleen cells, but not in CD4+ T cells.
296 2041484 Are syntax errors due to the amino acid sequence of neuroleukin involved in the pathogenesis of the acquired immunodeficiency syndrome (AIDS) and insulin dependent diabetes mellitus (IDDM)?
297 2041484 In AIDS the basic defect would be the human specific inability to distinguish between the amino acid sequence of neuroleukin and peptides derived from the gp120 envelope protein of HIV, resulting in a slowly progressing failure of the CD4+ T cell-mediated immunity.
298 2041484 In the ensuing dialogue neuroleukin secreted by T cells would imply a continuous demand for insulin secretion to pancreatic beta cells resulting in diabetes.
299 2091903 Cell-mediated immunity (CMI) included delayed type skin test (MULTITEST CMI), total lymphocyte count and lymphocyte subpopulations (CD3, CD4 and CD8) were determined.
300 2104186 No differences were detected between the three groups with respect to total T-lymphocytes (CD3), helper T-lymphocytes (CD4), suppressor cytotoxic T-lymphocytes (CD8), or the inducer of suppressor (Leu 3+/Leu 8+) subset of T-lymphocytes.
301 2113565 Differential roles of Mac-1+ cells, and CD4+ and CD8+ T lymphocytes in primary nonfunction and classic rejection of islet allografts.
302 2113565 Selective immunodepletion of host CD4+ and CD8+ T lymphocytes significantly extended the time of classic rejection but did not significantly affect the rate of primary nonfunction.
303 2113565 Differential roles of Mac-1+ cells, and CD4+ and CD8+ T lymphocytes in primary nonfunction and classic rejection of islet allografts.
304 2113565 Selective immunodepletion of host CD4+ and CD8+ T lymphocytes significantly extended the time of classic rejection but did not significantly affect the rate of primary nonfunction.
305 2123429 Abnormalities of CD4+ T lymphocyte proliferative responses from patients with recently diagnosed insulin-dependent diabetes mellitus.
306 2123429 To investigate the abnormalities of cell-mediated immunity in patients with recently diagnosed insulin-dependent diabetes mellitus (IDDM), we studied the responses of the two major T lymphocyte subsets from peripheral blood lymphocytes (PBL) to mitogen stimulation.
307 2123429 CD4+ and CD8+ T cells were isolated and were subsequently stimulated with three specific lymphocyte mitogens, namely Phytohemagglutinin (PHA), Concanavalin A (Con A) and Pokeweek mitogen (PWM).
308 2123429 The responses of CD8+ T cells from IDDM patients and from controls were not significantly different.
309 2123429 However, CD4+ T cells from IDDM patients showed significantly depressed responses to PHA and Con A and to a much lesser extent to PWM.
310 2123429 These data provide new information regarding the CD4+ T lymphocyte abnormalities found in patients with IDDM.
311 2123429 Abnormalities of CD4+ T lymphocyte proliferative responses from patients with recently diagnosed insulin-dependent diabetes mellitus.
312 2123429 To investigate the abnormalities of cell-mediated immunity in patients with recently diagnosed insulin-dependent diabetes mellitus (IDDM), we studied the responses of the two major T lymphocyte subsets from peripheral blood lymphocytes (PBL) to mitogen stimulation.
313 2123429 CD4+ and CD8+ T cells were isolated and were subsequently stimulated with three specific lymphocyte mitogens, namely Phytohemagglutinin (PHA), Concanavalin A (Con A) and Pokeweek mitogen (PWM).
314 2123429 The responses of CD8+ T cells from IDDM patients and from controls were not significantly different.
315 2123429 However, CD4+ T cells from IDDM patients showed significantly depressed responses to PHA and Con A and to a much lesser extent to PWM.
316 2123429 These data provide new information regarding the CD4+ T lymphocyte abnormalities found in patients with IDDM.
317 2123429 Abnormalities of CD4+ T lymphocyte proliferative responses from patients with recently diagnosed insulin-dependent diabetes mellitus.
318 2123429 To investigate the abnormalities of cell-mediated immunity in patients with recently diagnosed insulin-dependent diabetes mellitus (IDDM), we studied the responses of the two major T lymphocyte subsets from peripheral blood lymphocytes (PBL) to mitogen stimulation.
319 2123429 CD4+ and CD8+ T cells were isolated and were subsequently stimulated with three specific lymphocyte mitogens, namely Phytohemagglutinin (PHA), Concanavalin A (Con A) and Pokeweek mitogen (PWM).
320 2123429 The responses of CD8+ T cells from IDDM patients and from controls were not significantly different.
321 2123429 However, CD4+ T cells from IDDM patients showed significantly depressed responses to PHA and Con A and to a much lesser extent to PWM.
322 2123429 These data provide new information regarding the CD4+ T lymphocyte abnormalities found in patients with IDDM.
323 2123429 Abnormalities of CD4+ T lymphocyte proliferative responses from patients with recently diagnosed insulin-dependent diabetes mellitus.
324 2123429 To investigate the abnormalities of cell-mediated immunity in patients with recently diagnosed insulin-dependent diabetes mellitus (IDDM), we studied the responses of the two major T lymphocyte subsets from peripheral blood lymphocytes (PBL) to mitogen stimulation.
325 2123429 CD4+ and CD8+ T cells were isolated and were subsequently stimulated with three specific lymphocyte mitogens, namely Phytohemagglutinin (PHA), Concanavalin A (Con A) and Pokeweek mitogen (PWM).
326 2123429 The responses of CD8+ T cells from IDDM patients and from controls were not significantly different.
327 2123429 However, CD4+ T cells from IDDM patients showed significantly depressed responses to PHA and Con A and to a much lesser extent to PWM.
328 2123429 These data provide new information regarding the CD4+ T lymphocyte abnormalities found in patients with IDDM.
329 2132756 Results indicate that: 1) the first islet-infiltrating leukocytes are class II+, Ig- monocytes and CD8+ T lymphocytes, 2) after a slight decrease in the CD8+ cell population, an influx of CD4+ T lymphocytes occurs, accompanied by increasing numbers of CD8+ T cells, as well as IgM+ and IgG+ B lymphocytes, 3) whereas all the IgM+ B cells appear to be CD5+, between 70-95% of IgG+ B cells express CD5, and 4) throughout the response, the class II+, IgG-cell population remains relatively constant.
330 2137753 Activated CD4+ and CD8+ T-lymphocytes in newly diagnosed type 1 diabetes: a prospective study.
331 2137753 The overall percentage of activated T-lymphocytes (CD4+ + CD8+ cells) was (mean +/- SE) 3.1 +/- 0.5% at diagnosis, 2.1 +/- 0.3% at 1 month and 2.2 +/- 0.5% at 7 months test.
332 2137753 Among the CD4+ cells the percentage of activated cells fell from diagnosis (2.8 +/- 0.7%), to 1 month (1.5 +/- 0.3%, p less than 0.05), and 7 months (1.5 +/- 0.4%, p less than 0.05), whereas among the CD8+ cells they remained unchanged (3.3 +/- 0.6, 2.5 +/- 0.5 and 3.1 +/- 0.6%).
333 2137753 The percentage of activated CD4+ cells at diagnosis, and of CD8+ cells at all times, were higher (p less than 0.02) than in control subjects (CD4+, 0.8 +/- 0.2%; CD8+, 1.2 +/- 0.2%).
334 2137753 In conclusion, the activated T-lymphocytes present in Type 1 diabetic patients at diagnosis are equally increased among CD4+ and CD8+ cells, but after 7 months the increase is predominantly in CD8+ cells.
335 2137753 Activated CD4+ and CD8+ T-lymphocytes in newly diagnosed type 1 diabetes: a prospective study.
336 2137753 The overall percentage of activated T-lymphocytes (CD4+ + CD8+ cells) was (mean +/- SE) 3.1 +/- 0.5% at diagnosis, 2.1 +/- 0.3% at 1 month and 2.2 +/- 0.5% at 7 months test.
337 2137753 Among the CD4+ cells the percentage of activated cells fell from diagnosis (2.8 +/- 0.7%), to 1 month (1.5 +/- 0.3%, p less than 0.05), and 7 months (1.5 +/- 0.4%, p less than 0.05), whereas among the CD8+ cells they remained unchanged (3.3 +/- 0.6, 2.5 +/- 0.5 and 3.1 +/- 0.6%).
338 2137753 The percentage of activated CD4+ cells at diagnosis, and of CD8+ cells at all times, were higher (p less than 0.02) than in control subjects (CD4+, 0.8 +/- 0.2%; CD8+, 1.2 +/- 0.2%).
339 2137753 In conclusion, the activated T-lymphocytes present in Type 1 diabetic patients at diagnosis are equally increased among CD4+ and CD8+ cells, but after 7 months the increase is predominantly in CD8+ cells.
340 2137753 Activated CD4+ and CD8+ T-lymphocytes in newly diagnosed type 1 diabetes: a prospective study.
341 2137753 The overall percentage of activated T-lymphocytes (CD4+ + CD8+ cells) was (mean +/- SE) 3.1 +/- 0.5% at diagnosis, 2.1 +/- 0.3% at 1 month and 2.2 +/- 0.5% at 7 months test.
342 2137753 Among the CD4+ cells the percentage of activated cells fell from diagnosis (2.8 +/- 0.7%), to 1 month (1.5 +/- 0.3%, p less than 0.05), and 7 months (1.5 +/- 0.4%, p less than 0.05), whereas among the CD8+ cells they remained unchanged (3.3 +/- 0.6, 2.5 +/- 0.5 and 3.1 +/- 0.6%).
343 2137753 The percentage of activated CD4+ cells at diagnosis, and of CD8+ cells at all times, were higher (p less than 0.02) than in control subjects (CD4+, 0.8 +/- 0.2%; CD8+, 1.2 +/- 0.2%).
344 2137753 In conclusion, the activated T-lymphocytes present in Type 1 diabetic patients at diagnosis are equally increased among CD4+ and CD8+ cells, but after 7 months the increase is predominantly in CD8+ cells.
345 2137753 Activated CD4+ and CD8+ T-lymphocytes in newly diagnosed type 1 diabetes: a prospective study.
346 2137753 The overall percentage of activated T-lymphocytes (CD4+ + CD8+ cells) was (mean +/- SE) 3.1 +/- 0.5% at diagnosis, 2.1 +/- 0.3% at 1 month and 2.2 +/- 0.5% at 7 months test.
347 2137753 Among the CD4+ cells the percentage of activated cells fell from diagnosis (2.8 +/- 0.7%), to 1 month (1.5 +/- 0.3%, p less than 0.05), and 7 months (1.5 +/- 0.4%, p less than 0.05), whereas among the CD8+ cells they remained unchanged (3.3 +/- 0.6, 2.5 +/- 0.5 and 3.1 +/- 0.6%).
348 2137753 The percentage of activated CD4+ cells at diagnosis, and of CD8+ cells at all times, were higher (p less than 0.02) than in control subjects (CD4+, 0.8 +/- 0.2%; CD8+, 1.2 +/- 0.2%).
349 2137753 In conclusion, the activated T-lymphocytes present in Type 1 diabetic patients at diagnosis are equally increased among CD4+ and CD8+ cells, but after 7 months the increase is predominantly in CD8+ cells.
350 2137753 Activated CD4+ and CD8+ T-lymphocytes in newly diagnosed type 1 diabetes: a prospective study.
351 2137753 The overall percentage of activated T-lymphocytes (CD4+ + CD8+ cells) was (mean +/- SE) 3.1 +/- 0.5% at diagnosis, 2.1 +/- 0.3% at 1 month and 2.2 +/- 0.5% at 7 months test.
352 2137753 Among the CD4+ cells the percentage of activated cells fell from diagnosis (2.8 +/- 0.7%), to 1 month (1.5 +/- 0.3%, p less than 0.05), and 7 months (1.5 +/- 0.4%, p less than 0.05), whereas among the CD8+ cells they remained unchanged (3.3 +/- 0.6, 2.5 +/- 0.5 and 3.1 +/- 0.6%).
353 2137753 The percentage of activated CD4+ cells at diagnosis, and of CD8+ cells at all times, were higher (p less than 0.02) than in control subjects (CD4+, 0.8 +/- 0.2%; CD8+, 1.2 +/- 0.2%).
354 2137753 In conclusion, the activated T-lymphocytes present in Type 1 diabetic patients at diagnosis are equally increased among CD4+ and CD8+ cells, but after 7 months the increase is predominantly in CD8+ cells.
355 2138777 With anti-I-Ak monoclonal antibody (specific for I-Ak,f,r,s beta and produced by clone 11-5-2), and fluorescein isothiocyanate-conjugated goat anti-mouse IgG as second-step antibody, we found that SCICs from both sexes aberrantly expressed class II MHC molecules, which was not altered after SCICs were cultured for 24 hr or 120 hr in the presence of 10 ng of recombinant murine interferon gamma per ml.
356 2138777 Monoclonal antibodies to class II MHC and CD4 antigens blocked the proliferative response.
357 2138777 Results from control autologous and allogeneic mixed lymphocyte reactions suggest that the responder CD4 T cells are autoreactive self-class II MHC restricted.
358 2138777 With anti-I-Ak monoclonal antibody (specific for I-Ak,f,r,s beta and produced by clone 11-5-2), and fluorescein isothiocyanate-conjugated goat anti-mouse IgG as second-step antibody, we found that SCICs from both sexes aberrantly expressed class II MHC molecules, which was not altered after SCICs were cultured for 24 hr or 120 hr in the presence of 10 ng of recombinant murine interferon gamma per ml.
359 2138777 Monoclonal antibodies to class II MHC and CD4 antigens blocked the proliferative response.
360 2138777 Results from control autologous and allogeneic mixed lymphocyte reactions suggest that the responder CD4 T cells are autoreactive self-class II MHC restricted.
361 2146283 The increased binding in vitro of CD3 CD4 T-lymphocytes from type 1 (insulin-dependent) diabetic patients to beta-cell membrane antigens compared to lymphocytes from control subjects was previously shown to be a marker of cell-mediated immunity, called diabetic rosettes.
362 2162302 Most of the cells expressing Ly-6C were Thy-1.2+, CD4+, and CD8- and proliferated after stimulation with HK1.4.
363 2162302 To further understand the failure of NOD splenocytes to express Ly-6C, freshly isolated cells were stimulated with alpha/beta-interferon (IFN-alpha/beta) and IFN-gamma.
364 2179951 Genes encoding tumor necrosis factor alpha and granzyme A are expressed during development of autoimmune diabetes.
365 2179951 We show that the genes for tumor necrosis factor alpha and granzyme A, a serine protease associated with cytoplasmic granules of cytotoxic cells, are expressed during the development of spontaneous diabetes mellitus in the nonobese diabetic mouse.
366 2179951 Tumor necrosis factor alpha expression is exclusively observed in the intra-islet infiltrate, predominantly in lymphocytes adjacent to insulin-producing beta cells, the targets of the autoimmune destruction, implying that tumor necrosis factor alpha expression is induced locally--i.e., in the islet.
367 2179951 A considerable portion of cells expressing tumor necrosis factor alpha appear to be CD4+ T cells.
368 2187189 Repopulation of the atrophied thymus in diabetic rats by insulin-like growth factor I.
369 2187189 We describe here that the weight and the architecture of the thymus of diabetic rats is restored towards normal not only by insulin but also by insulin-like growth factor I (IGF-I) treatment.
370 2187189 In contrast to insulin, this effect of IGF-I occurs despite persisting hyperglycemia and adrenal hyperplasia.
371 2187189 Insulin, as well as IGF-I treatment of diabetic rats increased [3H]thymidine incorporation by thymocytes.
372 2187189 In addition, a major deficiency of thymocytes expressing simultaneously the W3/25 and the Ox8 antigens (corresponding to immature human CD4+/CD8+ thymocytes) was observed.
373 2187189 These changes were restored towards normal by insulin as well as by IGF-I treatment.
374 2187189 We conclude that IGF-I has important effects on the thymocyte number and the presence of CD4+/CD8+ immature cells in the thymus of diabetic rats despite persisting hyperglycemia.
375 2187189 Repopulation of the atrophied thymus in diabetic rats by insulin-like growth factor I.
376 2187189 We describe here that the weight and the architecture of the thymus of diabetic rats is restored towards normal not only by insulin but also by insulin-like growth factor I (IGF-I) treatment.
377 2187189 In contrast to insulin, this effect of IGF-I occurs despite persisting hyperglycemia and adrenal hyperplasia.
378 2187189 Insulin, as well as IGF-I treatment of diabetic rats increased [3H]thymidine incorporation by thymocytes.
379 2187189 In addition, a major deficiency of thymocytes expressing simultaneously the W3/25 and the Ox8 antigens (corresponding to immature human CD4+/CD8+ thymocytes) was observed.
380 2187189 These changes were restored towards normal by insulin as well as by IGF-I treatment.
381 2187189 We conclude that IGF-I has important effects on the thymocyte number and the presence of CD4+/CD8+ immature cells in the thymus of diabetic rats despite persisting hyperglycemia.
382 2204602 Insulin induced proliferation of blood mononuclear cells, numbers of blood B and T cells, of blood lymphocytes bearing interleukin 2 receptors or HLA class II molecules were assayed at diagnosis and one year later in children with insulin-dependent diabetes mellitus (IDDM) and in healthy children.
383 2204602 T cells of the helper/inducer (CD4+) phenotype and interleukin 2 receptor positive lymphocytes were increased both at diagnosis and one year later.
384 2459088 Here we report three CD4+ T lymphocyte clones (TLCs) generated from a DR3,4; DQw2,w3.1 responder stimulated with cells from a DR3,4; DQw2,w3.2 donor, and using a modified cloning procedure involving enrichment of IL-2 receptor-positive T cell during priming.
385 2480383 By means of immunohistochemical analysis, we were able to detect perforin Ag in a small subpopulation of CD8+/Thy-1+/asialo GM1-/CD4- lymphocytes in the pancreatic islets of animals undergoing both spontaneous and adoptive transfer-mediated insulitis.
386 2492007 The role of T-lymphocyte subpopulations in the rejection of fetal pig proislet (islet precursor) xenografts in mice was examined with in vivo administration of monoclonal antibodies (MoAbs) to CD4+ (GK 1.5) and CD8+ (49-11.1) T-lymphocyte subsets.
387 2502462 Persistent reduction of CD4/CD8 lymphocyte ratio and cell activation before the onset of type 1 (insulin-dependent) diabetes.
388 2502462 Lymphocytes were phenotyped using a panel of monoclonal antibodies which recognise CD3, CD4, CD8 lymphocytes, K/NK cells, HLA Class II products and IL-2 receptors (IL-2r).
389 2502462 They all possessed CF-ICA and five out of six showed a persistent reduction (less than 1.5) of the CD4/CD8 lymphocyte ratio before the clinical onset of the disease.
390 2502462 We conclude that imbalance of lymphocyte immunoregulatory subsets is present before the onset of Type 1 diabetes in susceptible individuals; the persistence of a reduced CD4/CD8 lymphocyte ratio may reflect the ongoing process leading to B-cell destruction.
391 2502462 Persistent reduction of CD4/CD8 lymphocyte ratio and cell activation before the onset of type 1 (insulin-dependent) diabetes.
392 2502462 Lymphocytes were phenotyped using a panel of monoclonal antibodies which recognise CD3, CD4, CD8 lymphocytes, K/NK cells, HLA Class II products and IL-2 receptors (IL-2r).
393 2502462 They all possessed CF-ICA and five out of six showed a persistent reduction (less than 1.5) of the CD4/CD8 lymphocyte ratio before the clinical onset of the disease.
394 2502462 We conclude that imbalance of lymphocyte immunoregulatory subsets is present before the onset of Type 1 diabetes in susceptible individuals; the persistence of a reduced CD4/CD8 lymphocyte ratio may reflect the ongoing process leading to B-cell destruction.
395 2502462 Persistent reduction of CD4/CD8 lymphocyte ratio and cell activation before the onset of type 1 (insulin-dependent) diabetes.
396 2502462 Lymphocytes were phenotyped using a panel of monoclonal antibodies which recognise CD3, CD4, CD8 lymphocytes, K/NK cells, HLA Class II products and IL-2 receptors (IL-2r).
397 2502462 They all possessed CF-ICA and five out of six showed a persistent reduction (less than 1.5) of the CD4/CD8 lymphocyte ratio before the clinical onset of the disease.
398 2502462 We conclude that imbalance of lymphocyte immunoregulatory subsets is present before the onset of Type 1 diabetes in susceptible individuals; the persistence of a reduced CD4/CD8 lymphocyte ratio may reflect the ongoing process leading to B-cell destruction.
399 2502462 Persistent reduction of CD4/CD8 lymphocyte ratio and cell activation before the onset of type 1 (insulin-dependent) diabetes.
400 2502462 Lymphocytes were phenotyped using a panel of monoclonal antibodies which recognise CD3, CD4, CD8 lymphocytes, K/NK cells, HLA Class II products and IL-2 receptors (IL-2r).
401 2502462 They all possessed CF-ICA and five out of six showed a persistent reduction (less than 1.5) of the CD4/CD8 lymphocyte ratio before the clinical onset of the disease.
402 2502462 We conclude that imbalance of lymphocyte immunoregulatory subsets is present before the onset of Type 1 diabetes in susceptible individuals; the persistence of a reduced CD4/CD8 lymphocyte ratio may reflect the ongoing process leading to B-cell destruction.
403 2506278 In order to address the roles of CD4+ and CD8+ T cells in pancreatic islet rejection, we used an adoptive transfer model in which H-2b nude mice were reconstituted with negatively selected H-2b CD4+ or CD8+ T cell subpopulations and engrafted with fully allogeneic pancreatic islet grafts.
404 2506278 We found that primary (unprimed) CD4+ T cells mediated the rejection of pancreatic islet grafts, whereas, primary CD8+ T cells failed to do so, even though both T cell subpopulations were competent to reject skin allografts.
405 2506278 These data indicate that primary CD4+ T cells are necessary for rejection of allogeneic pancreatic islet grafts, whereas primary CD8+ T lymphocytes are not.
406 2506278 In order to address the roles of CD4+ and CD8+ T cells in pancreatic islet rejection, we used an adoptive transfer model in which H-2b nude mice were reconstituted with negatively selected H-2b CD4+ or CD8+ T cell subpopulations and engrafted with fully allogeneic pancreatic islet grafts.
407 2506278 We found that primary (unprimed) CD4+ T cells mediated the rejection of pancreatic islet grafts, whereas, primary CD8+ T cells failed to do so, even though both T cell subpopulations were competent to reject skin allografts.
408 2506278 These data indicate that primary CD4+ T cells are necessary for rejection of allogeneic pancreatic islet grafts, whereas primary CD8+ T lymphocytes are not.
409 2506278 In order to address the roles of CD4+ and CD8+ T cells in pancreatic islet rejection, we used an adoptive transfer model in which H-2b nude mice were reconstituted with negatively selected H-2b CD4+ or CD8+ T cell subpopulations and engrafted with fully allogeneic pancreatic islet grafts.
410 2506278 We found that primary (unprimed) CD4+ T cells mediated the rejection of pancreatic islet grafts, whereas, primary CD8+ T cells failed to do so, even though both T cell subpopulations were competent to reject skin allografts.
411 2506278 These data indicate that primary CD4+ T cells are necessary for rejection of allogeneic pancreatic islet grafts, whereas primary CD8+ T lymphocytes are not.
412 2507922 To determine the mechanism of the protective effect of I-E, we have produced cloned CD4+ and CD8+ T-cell lines from islets of recently diabetic NOD mice.
413 2507922 Both CD4+ and CD8+ cloned T cells bear receptors encoded by a V beta 5 gene segment, known to be deleted during development in I-E expressing mice.
414 2507922 To determine the mechanism of the protective effect of I-E, we have produced cloned CD4+ and CD8+ T-cell lines from islets of recently diabetic NOD mice.
415 2507922 Both CD4+ and CD8+ cloned T cells bear receptors encoded by a V beta 5 gene segment, known to be deleted during development in I-E expressing mice.
416 2526634 The percent CD4+ and CD8+ T cells were not significantly different from control.
417 2527266 The percentage of CD4 and CD8 cells in the spleen was transiently reduced after injection and the frequency of Pgp-1+-high cells (putative memory cells) was increased 2 to 4 wk postinjection, suggesting that in vivo administration of the antibody caused some T cells to divide as well as transiently reducing T cell numbers.
418 2527266 Protection from diabetes did not follow neonatal elimination of T cells with CD4 and CD8 antibodies, nor the injection of a TCR subset antibody, F23.1.
419 2527266 The percentage of CD4 and CD8 cells in the spleen was transiently reduced after injection and the frequency of Pgp-1+-high cells (putative memory cells) was increased 2 to 4 wk postinjection, suggesting that in vivo administration of the antibody caused some T cells to divide as well as transiently reducing T cell numbers.
420 2527266 Protection from diabetes did not follow neonatal elimination of T cells with CD4 and CD8 antibodies, nor the injection of a TCR subset antibody, F23.1.
421 2530249 Sulfated beef insulin treatment elicits CD8+ T cells that may abrogate immunologic insulin resistance in type I diabetes.
422 2530249 Insulin A-loop specific CD4+ T cells from these patients did not respond to SBI.
423 2530249 This occurred in parallel to the appearance of her insulin-specific CD8+ T cells, which inhibited the response of her A-loop-specific CD4+ T cells to insulin.
424 2530249 A transient increase in her CD8+ anti-insulin antibody activity coincided with a relative lack of her CD8+ T cell activity.
425 2530249 CD8+ T cells that regulate T cell responsiveness to insulin are probably present but difficult to detect in most type I diabetes patients.
426 2530249 Our data demonstrate that CD8+ T cells play an important role in controlling peripheral tolerance to insulin and may abrogate IIR in a diabetic patient treated with SBI.
427 2530249 Sulfated beef insulin treatment elicits CD8+ T cells that may abrogate immunologic insulin resistance in type I diabetes.
428 2530249 Insulin A-loop specific CD4+ T cells from these patients did not respond to SBI.
429 2530249 This occurred in parallel to the appearance of her insulin-specific CD8+ T cells, which inhibited the response of her A-loop-specific CD4+ T cells to insulin.
430 2530249 A transient increase in her CD8+ anti-insulin antibody activity coincided with a relative lack of her CD8+ T cell activity.
431 2530249 CD8+ T cells that regulate T cell responsiveness to insulin are probably present but difficult to detect in most type I diabetes patients.
432 2530249 Our data demonstrate that CD8+ T cells play an important role in controlling peripheral tolerance to insulin and may abrogate IIR in a diabetic patient treated with SBI.
433 2570740 Defective immunoregulation in primary biliary cirrhosis: CD4+, Leu-8+ T cells have abnormal activation and suppressor function in vitro.
434 2570740 The proportion of CD4+ T cells expressing the Leu-8 and CD45R antigens was normal in patients with primary biliary cirrhosis.
435 2570740 The capacity of CD4+, Leu-8- T cells to provide helper function for pokeweed mitogen-stimulated immunoglobulin synthesis by B cells in vitro was similar in patients and controls.
436 2570740 However, in contrast to normal individuals and patients with other liver diseases, CD4+, Leu-8+ T cells from six of 10 patients with primary biliary cirrhosis did not suppress, but enhanced immunoglobulin synthesis.
437 2570740 Whereas treatment of CD4+ T cells from normal individuals with anti-Leu-8 monoclonal antibody enhanced their suppressor function, similar treatment of CD4+ T cells from patients with primary biliary cirrhosis did not increase their suppressor function.
438 2570740 To determine whether the abnormal regulatory function of CD4+, Leu-8+ T cells was due to a defect of cell activation, the proliferative response of CD4+ T cell subpopulations to mitogenic stimulation was examined.
439 2570740 The proliferative responses of CD4+, Leu-8- T cells from patients with primary biliary cirrhosis and controls were similar, but the proliferative responses of CD4+, Leu-8+ T cells from patients with primary biliary cirrhosis were lower than those of control cells.
440 2570740 Defective immunoregulation in primary biliary cirrhosis: CD4+, Leu-8+ T cells have abnormal activation and suppressor function in vitro.
441 2570740 The proportion of CD4+ T cells expressing the Leu-8 and CD45R antigens was normal in patients with primary biliary cirrhosis.
442 2570740 The capacity of CD4+, Leu-8- T cells to provide helper function for pokeweed mitogen-stimulated immunoglobulin synthesis by B cells in vitro was similar in patients and controls.
443 2570740 However, in contrast to normal individuals and patients with other liver diseases, CD4+, Leu-8+ T cells from six of 10 patients with primary biliary cirrhosis did not suppress, but enhanced immunoglobulin synthesis.
444 2570740 Whereas treatment of CD4+ T cells from normal individuals with anti-Leu-8 monoclonal antibody enhanced their suppressor function, similar treatment of CD4+ T cells from patients with primary biliary cirrhosis did not increase their suppressor function.
445 2570740 To determine whether the abnormal regulatory function of CD4+, Leu-8+ T cells was due to a defect of cell activation, the proliferative response of CD4+ T cell subpopulations to mitogenic stimulation was examined.
446 2570740 The proliferative responses of CD4+, Leu-8- T cells from patients with primary biliary cirrhosis and controls were similar, but the proliferative responses of CD4+, Leu-8+ T cells from patients with primary biliary cirrhosis were lower than those of control cells.
447 2570740 Defective immunoregulation in primary biliary cirrhosis: CD4+, Leu-8+ T cells have abnormal activation and suppressor function in vitro.
448 2570740 The proportion of CD4+ T cells expressing the Leu-8 and CD45R antigens was normal in patients with primary biliary cirrhosis.
449 2570740 The capacity of CD4+, Leu-8- T cells to provide helper function for pokeweed mitogen-stimulated immunoglobulin synthesis by B cells in vitro was similar in patients and controls.
450 2570740 However, in contrast to normal individuals and patients with other liver diseases, CD4+, Leu-8+ T cells from six of 10 patients with primary biliary cirrhosis did not suppress, but enhanced immunoglobulin synthesis.
451 2570740 Whereas treatment of CD4+ T cells from normal individuals with anti-Leu-8 monoclonal antibody enhanced their suppressor function, similar treatment of CD4+ T cells from patients with primary biliary cirrhosis did not increase their suppressor function.
452 2570740 To determine whether the abnormal regulatory function of CD4+, Leu-8+ T cells was due to a defect of cell activation, the proliferative response of CD4+ T cell subpopulations to mitogenic stimulation was examined.
453 2570740 The proliferative responses of CD4+, Leu-8- T cells from patients with primary biliary cirrhosis and controls were similar, but the proliferative responses of CD4+, Leu-8+ T cells from patients with primary biliary cirrhosis were lower than those of control cells.
454 2570740 Defective immunoregulation in primary biliary cirrhosis: CD4+, Leu-8+ T cells have abnormal activation and suppressor function in vitro.
455 2570740 The proportion of CD4+ T cells expressing the Leu-8 and CD45R antigens was normal in patients with primary biliary cirrhosis.
456 2570740 The capacity of CD4+, Leu-8- T cells to provide helper function for pokeweed mitogen-stimulated immunoglobulin synthesis by B cells in vitro was similar in patients and controls.
457 2570740 However, in contrast to normal individuals and patients with other liver diseases, CD4+, Leu-8+ T cells from six of 10 patients with primary biliary cirrhosis did not suppress, but enhanced immunoglobulin synthesis.
458 2570740 Whereas treatment of CD4+ T cells from normal individuals with anti-Leu-8 monoclonal antibody enhanced their suppressor function, similar treatment of CD4+ T cells from patients with primary biliary cirrhosis did not increase their suppressor function.
459 2570740 To determine whether the abnormal regulatory function of CD4+, Leu-8+ T cells was due to a defect of cell activation, the proliferative response of CD4+ T cell subpopulations to mitogenic stimulation was examined.
460 2570740 The proliferative responses of CD4+, Leu-8- T cells from patients with primary biliary cirrhosis and controls were similar, but the proliferative responses of CD4+, Leu-8+ T cells from patients with primary biliary cirrhosis were lower than those of control cells.
461 2570740 Defective immunoregulation in primary biliary cirrhosis: CD4+, Leu-8+ T cells have abnormal activation and suppressor function in vitro.
462 2570740 The proportion of CD4+ T cells expressing the Leu-8 and CD45R antigens was normal in patients with primary biliary cirrhosis.
463 2570740 The capacity of CD4+, Leu-8- T cells to provide helper function for pokeweed mitogen-stimulated immunoglobulin synthesis by B cells in vitro was similar in patients and controls.
464 2570740 However, in contrast to normal individuals and patients with other liver diseases, CD4+, Leu-8+ T cells from six of 10 patients with primary biliary cirrhosis did not suppress, but enhanced immunoglobulin synthesis.
465 2570740 Whereas treatment of CD4+ T cells from normal individuals with anti-Leu-8 monoclonal antibody enhanced their suppressor function, similar treatment of CD4+ T cells from patients with primary biliary cirrhosis did not increase their suppressor function.
466 2570740 To determine whether the abnormal regulatory function of CD4+, Leu-8+ T cells was due to a defect of cell activation, the proliferative response of CD4+ T cell subpopulations to mitogenic stimulation was examined.
467 2570740 The proliferative responses of CD4+, Leu-8- T cells from patients with primary biliary cirrhosis and controls were similar, but the proliferative responses of CD4+, Leu-8+ T cells from patients with primary biliary cirrhosis were lower than those of control cells.
468 2570740 Defective immunoregulation in primary biliary cirrhosis: CD4+, Leu-8+ T cells have abnormal activation and suppressor function in vitro.
469 2570740 The proportion of CD4+ T cells expressing the Leu-8 and CD45R antigens was normal in patients with primary biliary cirrhosis.
470 2570740 The capacity of CD4+, Leu-8- T cells to provide helper function for pokeweed mitogen-stimulated immunoglobulin synthesis by B cells in vitro was similar in patients and controls.
471 2570740 However, in contrast to normal individuals and patients with other liver diseases, CD4+, Leu-8+ T cells from six of 10 patients with primary biliary cirrhosis did not suppress, but enhanced immunoglobulin synthesis.
472 2570740 Whereas treatment of CD4+ T cells from normal individuals with anti-Leu-8 monoclonal antibody enhanced their suppressor function, similar treatment of CD4+ T cells from patients with primary biliary cirrhosis did not increase their suppressor function.
473 2570740 To determine whether the abnormal regulatory function of CD4+, Leu-8+ T cells was due to a defect of cell activation, the proliferative response of CD4+ T cell subpopulations to mitogenic stimulation was examined.
474 2570740 The proliferative responses of CD4+, Leu-8- T cells from patients with primary biliary cirrhosis and controls were similar, but the proliferative responses of CD4+, Leu-8+ T cells from patients with primary biliary cirrhosis were lower than those of control cells.
475 2570740 Defective immunoregulation in primary biliary cirrhosis: CD4+, Leu-8+ T cells have abnormal activation and suppressor function in vitro.
476 2570740 The proportion of CD4+ T cells expressing the Leu-8 and CD45R antigens was normal in patients with primary biliary cirrhosis.
477 2570740 The capacity of CD4+, Leu-8- T cells to provide helper function for pokeweed mitogen-stimulated immunoglobulin synthesis by B cells in vitro was similar in patients and controls.
478 2570740 However, in contrast to normal individuals and patients with other liver diseases, CD4+, Leu-8+ T cells from six of 10 patients with primary biliary cirrhosis did not suppress, but enhanced immunoglobulin synthesis.
479 2570740 Whereas treatment of CD4+ T cells from normal individuals with anti-Leu-8 monoclonal antibody enhanced their suppressor function, similar treatment of CD4+ T cells from patients with primary biliary cirrhosis did not increase their suppressor function.
480 2570740 To determine whether the abnormal regulatory function of CD4+, Leu-8+ T cells was due to a defect of cell activation, the proliferative response of CD4+ T cell subpopulations to mitogenic stimulation was examined.
481 2570740 The proliferative responses of CD4+, Leu-8- T cells from patients with primary biliary cirrhosis and controls were similar, but the proliferative responses of CD4+, Leu-8+ T cells from patients with primary biliary cirrhosis were lower than those of control cells.
482 2644144 Effect of cyclosporin on interleukin 2-related T-lymphocyte parameters in IDDM patients.
483 2644144 Seventy patients aged 15-40 yr with recent-onset insulin-dependent diabetes mellitus (IDDM) were entered into a double-blind trial, in which they were randomly assigned to either cyclosporin (7.5 mg.kg-1.day-1) or to placebo and were monitored for 1 yr for various phenotypic and functional parameters of T-lymphocyte-mediated immunity.
484 2644144 Before treatment, the proportions of total T-lymphocytes (CD3+) and helper-inducer T-lymphocytes (CD4+) were normal, whereas significantly decreased values of suppressor/cytotoxic T-lymphocytes (CD8+), as compared with normal controls, were found in 31% of the patients.
485 2644144 The interleukin 2 (IL-2)-receptor expression was significantly increased in IDDM patients compared with control subjects, although the single values were low: patients, 2.02 +/- 0.41%; controls, 0.88 +/- 0.25% (means +/- SE).
486 2644144 Circulating levels of soluble IL-2 receptor were also significantly increased in IDDM patients compared with controls: patients, 372.3 +/- 25.4 U/ml; controls, 235.5 +/- 29.3 U/ml (means +/- SE).
487 2654321 Patients who had been included in a randomized double-blind placebo-controlled trial on the efficacy of cyclosporin A (CyA) in producing remissions in insulin-dependent diabetes mellitus (IDDM) type I were investigated for humoral and cellular immunologic parameters.
488 2654321 Whereas metabolic derangement before the initiation of insulin treatment led to small but significant decreases in the percentage of CD4-positive lymphocytes as well as of the activity of natural killer (NK) cells and antibody-dependent cellular cytotoxicity (ADCC), the administration of CyA did not influence any of the immunologic parameters tested, which included proliferative lymphocyte responses to mitogens and alloantigens and serum concentrations of immunoglobulins G, A and M.
489 2687874 CD4 is a T-cell surface glycoprotein and serves as the receptor for the human immunodeficiency virus.
490 2693822 Diabetic patients with the disease duration less than 1 year (group 1 eight patients with diabetes mellitus type I and group 2 seven patients with diabetes mellitus type II) and 8 healthy donors were examined for subpopulations of lymphocytes (CD 3-, CD 4-, CD 8-, CD 20-positive cells, CD4/CD8), expression of activation markers on peripheral blood mononuclears investigated with monoclonal antibodies of BMA and OKT series, and serum neopterin concentration.
491 2693822 Group I patients had low CD4/CD8 and increased number of CD 8 cells, 1a/DR-positive lymphocytes (28.6 +/- 7%), OKT9-positive lymphocytes (8.0 +/- 4.7%), activated neopterin synthesis registered neither in group 2 patients nor donors.
492 2693822 Diabetic patients with the disease duration less than 1 year (group 1 eight patients with diabetes mellitus type I and group 2 seven patients with diabetes mellitus type II) and 8 healthy donors were examined for subpopulations of lymphocytes (CD 3-, CD 4-, CD 8-, CD 20-positive cells, CD4/CD8), expression of activation markers on peripheral blood mononuclears investigated with monoclonal antibodies of BMA and OKT series, and serum neopterin concentration.
493 2693822 Group I patients had low CD4/CD8 and increased number of CD 8 cells, 1a/DR-positive lymphocytes (28.6 +/- 7%), OKT9-positive lymphocytes (8.0 +/- 4.7%), activated neopterin synthesis registered neither in group 2 patients nor donors.
494 2695566 No differences in total lymphocyte count, percentage of B cells, percentage of total T cells (CD3), helper-inducer T cells (CD4) or cytotoxic-suppressor cells (CD8), lymphocyte blastogenesis assays, or pokeweed mitogen-induced IgG secretion in T & B cell co-cultures were detected before therapy.
495 2962799 Normalization of the CD4/CD8 lymphocyte ratio and increased B lymphocytes in long standing diabetic patients following therapy with thymopentin.
496 2962799 A double blind study with thymopentin (TP5) and placebo was performed in 49 patients affected by Type 1 and Type 2 diabetes of long duration characterized by a reduction of the CD4/CD8 (helper/suppressor) lymphocyte ratio.
497 2962799 Data showed a statistically significant increase of the CD4/CD8 lymphocyte ratio (p less than 0.02) and of the percentage of B lymphocytes (p less than 0.001) only in the TP5 receiving group.
498 2962799 Normalization of the CD4/CD8 lymphocyte ratio and increased B lymphocytes in long standing diabetic patients following therapy with thymopentin.
499 2962799 A double blind study with thymopentin (TP5) and placebo was performed in 49 patients affected by Type 1 and Type 2 diabetes of long duration characterized by a reduction of the CD4/CD8 (helper/suppressor) lymphocyte ratio.
500 2962799 Data showed a statistically significant increase of the CD4/CD8 lymphocyte ratio (p less than 0.02) and of the percentage of B lymphocytes (p less than 0.001) only in the TP5 receiving group.
501 2962799 Normalization of the CD4/CD8 lymphocyte ratio and increased B lymphocytes in long standing diabetic patients following therapy with thymopentin.
502 2962799 A double blind study with thymopentin (TP5) and placebo was performed in 49 patients affected by Type 1 and Type 2 diabetes of long duration characterized by a reduction of the CD4/CD8 (helper/suppressor) lymphocyte ratio.
503 2962799 Data showed a statistically significant increase of the CD4/CD8 lymphocyte ratio (p less than 0.02) and of the percentage of B lymphocytes (p less than 0.001) only in the TP5 receiving group.
504 2972427 The majority of the activated T cells in the blood of insulin-dependent diabetes mellitus (IDDM) patients are CD4+.
505 2972427 Twenty-five recently diagnosed insulin-dependent diabetic patients were screened for the presence of activated T lymphocytes using the anti-IL-2 receptor monoclonal antibody; thirteen had elevated levels of activated T lymphocytes.
506 2972427 The activated cells were mostly confined to the CD4 subset, with the CD4/CD8 ratio in IL-2 receptor expressing cells averaging 5 +/- 1 (s.d.) compared with 1.3 +/- 0.3 for all T cells.
507 2972427 In recent onset insulin-dependent diabetes blood there was no lack of CD4 CD45R+ (suppressor/inducer) T cells.
508 2972427 The activated IL-2 receptor, expressing cells belonged to both CD4 subsets, 'helper inducer' (CD44B4) and 'suppressor inducer', (CD42H4).
509 2972427 The majority of the activated T cells in the blood of insulin-dependent diabetes mellitus (IDDM) patients are CD4+.
510 2972427 Twenty-five recently diagnosed insulin-dependent diabetic patients were screened for the presence of activated T lymphocytes using the anti-IL-2 receptor monoclonal antibody; thirteen had elevated levels of activated T lymphocytes.
511 2972427 The activated cells were mostly confined to the CD4 subset, with the CD4/CD8 ratio in IL-2 receptor expressing cells averaging 5 +/- 1 (s.d.) compared with 1.3 +/- 0.3 for all T cells.
512 2972427 In recent onset insulin-dependent diabetes blood there was no lack of CD4 CD45R+ (suppressor/inducer) T cells.
513 2972427 The activated IL-2 receptor, expressing cells belonged to both CD4 subsets, 'helper inducer' (CD44B4) and 'suppressor inducer', (CD42H4).
514 2972427 The majority of the activated T cells in the blood of insulin-dependent diabetes mellitus (IDDM) patients are CD4+.
515 2972427 Twenty-five recently diagnosed insulin-dependent diabetic patients were screened for the presence of activated T lymphocytes using the anti-IL-2 receptor monoclonal antibody; thirteen had elevated levels of activated T lymphocytes.
516 2972427 The activated cells were mostly confined to the CD4 subset, with the CD4/CD8 ratio in IL-2 receptor expressing cells averaging 5 +/- 1 (s.d.) compared with 1.3 +/- 0.3 for all T cells.
517 2972427 In recent onset insulin-dependent diabetes blood there was no lack of CD4 CD45R+ (suppressor/inducer) T cells.
518 2972427 The activated IL-2 receptor, expressing cells belonged to both CD4 subsets, 'helper inducer' (CD44B4) and 'suppressor inducer', (CD42H4).
519 2972427 The majority of the activated T cells in the blood of insulin-dependent diabetes mellitus (IDDM) patients are CD4+.
520 2972427 Twenty-five recently diagnosed insulin-dependent diabetic patients were screened for the presence of activated T lymphocytes using the anti-IL-2 receptor monoclonal antibody; thirteen had elevated levels of activated T lymphocytes.
521 2972427 The activated cells were mostly confined to the CD4 subset, with the CD4/CD8 ratio in IL-2 receptor expressing cells averaging 5 +/- 1 (s.d.) compared with 1.3 +/- 0.3 for all T cells.
522 2972427 In recent onset insulin-dependent diabetes blood there was no lack of CD4 CD45R+ (suppressor/inducer) T cells.
523 2972427 The activated IL-2 receptor, expressing cells belonged to both CD4 subsets, 'helper inducer' (CD44B4) and 'suppressor inducer', (CD42H4).
524 3010443 However, in the presence of CD4+ T cells, CD8+ cells were able to mount a substantial proliferation when stimulated with soluble antigens.
525 3071440 Neither CD3+ (pan) T-lymphocytes, CD4+ (helper) T-cells, CD8+ (suppressor/cytotoxic) T-cells, the relation between CD4+ and CD8+ T-cells, nor the total amount of lymphocytes, changed significantly between the first, second, and third examination.
526 3135758 The infiltrates within native pancreatic islets and islet grafts were comprised predominantly of Ia+ cells (dendritic cells and macrophages) CD4+ cells (helper/inducer lymphocytes and macrophages), CD5+ (pan-T) cells and smaller numbers of CD8+ (cytotoxic/suppressor and NK) cells.
527 3259951 The T-cell surface glycoprotein CD4 plays an important role in mediating cellular immunity and serves as the receptor for human immunodeficiency virus.
528 3280182 Children with newly diagnosed insulin-dependent diabetes mellitus (IDDM) had increased numbers of CD25 positive lymphocytes in peripheral blood and peripheral blood mononuclear cells responded to insulin antigens by proliferation.
529 3280182 The CD25 positivity and insulin proliferation were associated to the duration of symptoms before the diagnosis of IDDM.
530 3280182 Children with IDDM also had increased numbers of CD4 positive T cells in peripheral blood.
531 3286489 The results indicate that the cells responding to insulin were T cells mainly of the helper (CD4+) phenotype and that they required adherent cells of the monocyte/macrophage lineage for proliferation to occur.
532 3293350 An increased percentage of T cells (CD3+ cells) expressing class II antigens was seen in 19 out of 25 patients and class II expression was observed on cells within both the CD4+ and CD8+ T cell subsets.
533 3500476 In the course of characterizing human T-cell tumors with an immature (CD4-, CD8-) surface phenotype, we detected a 2-kilobase alpha-related transcript.
534 3652617 The ultrastructure of peripheral blood lymphocyte subsets and activated lymphocytes from 5 patients with recent onset insulin-dependent diabetes as identified by monoclonal antibodies (CD4, CD8 and 4F2) and labelled with gold coupled goat anti-mouse IgG are described and depicted.
535 7482726 This contrasts with the dependence of islet allograft rejection on both CD4+ and CD8+ T cells.
536 7485382 Suppression of insulitis in non-obese diabetic (NOD) mice by oral insulin administration is associated with selective expression of interleukin-4 and -10, transforming growth factor-beta, and prostaglandin-E.
537 7485382 Immunohistological studies using monoclonal antibodies showed that infiltrating MNC consisted mainly of CD4+ T cells ( > 75% of leukocytes) plus smaller numbers of macrophages and CD8+ T cells.
538 7485382 These cells displayed evidence of immune activation with expression of receptors for interleukin-2 (IL-2R) plus Th1 cytokines; dense labeling for IFN-gamma and tumor necrosis factor-alpha, plus lesser amounts of IL-2, was observed.
539 7485382 MNC lacked labeling for IL-4, IL-10, prostaglandin-E, or transforming growth factor-beta.
540 7485382 By contrast, at 10 weeks, pancreatic tissues from NOD mice fed insulin showed considerably less insulitis, and the residual MNC, although still largely CD4+ T cells plus macrophages, showed dense labeling for IL-4, IL-10, prostaglandin-E, and transforming growth factor-beta and an absence of IL-2, IFN-gamma or tumor necrosis factor-alpha Taken together with our previous findings, these data indicate that oral administration of insulin affects the development of diabetes in NOD mice through the generation of cells that elaborate immunoregulatory cytokines within the target organ and shift the balance from a Th1 to a Th2 pattern of cytokine expression.
541 7485382 Suppression of insulitis in non-obese diabetic (NOD) mice by oral insulin administration is associated with selective expression of interleukin-4 and -10, transforming growth factor-beta, and prostaglandin-E.
542 7485382 Immunohistological studies using monoclonal antibodies showed that infiltrating MNC consisted mainly of CD4+ T cells ( > 75% of leukocytes) plus smaller numbers of macrophages and CD8+ T cells.
543 7485382 These cells displayed evidence of immune activation with expression of receptors for interleukin-2 (IL-2R) plus Th1 cytokines; dense labeling for IFN-gamma and tumor necrosis factor-alpha, plus lesser amounts of IL-2, was observed.
544 7485382 MNC lacked labeling for IL-4, IL-10, prostaglandin-E, or transforming growth factor-beta.
545 7485382 By contrast, at 10 weeks, pancreatic tissues from NOD mice fed insulin showed considerably less insulitis, and the residual MNC, although still largely CD4+ T cells plus macrophages, showed dense labeling for IL-4, IL-10, prostaglandin-E, and transforming growth factor-beta and an absence of IL-2, IFN-gamma or tumor necrosis factor-alpha Taken together with our previous findings, these data indicate that oral administration of insulin affects the development of diabetes in NOD mice through the generation of cells that elaborate immunoregulatory cytokines within the target organ and shift the balance from a Th1 to a Th2 pattern of cytokine expression.
546 7510012 Immunohistochemical staining showed abundant insulin-positive cells at the graft site, with small numbers of CD4- and CD8-positive cells present in the vicinity of the normal-appearing islets.
547 7512875 Flow cytometric analysis of lymphocyte subsets in blood and spleen also showed no significant differences, but in the thymus the percentage of immature CD4/CD8 "double positive" cells increased while the more mature CD3"high", and CD4 or CD8 "single-positive" cells decreased.
548 7512990 An adoptive transfer model of insulin-dependent diabetes mellitus (IDDM) in the nonobese diabetic mouse was used to examine the roles of alpha 4-integrin, vascular cell adhesion molecule 1 (VCAM-1); and intercellular adhesion molecule 1 (ICAM-1) in the pathogenesis of autoimmune diabetes.
549 7512990 Antibodies specific for ICAM-1 had little effect on the onset or incidence of IDDM.
550 7512990 In addition, the cascade of events leading to T cell transit across endothelium may be different for CD4 and CD8 cells, and may differ depending on the endothelium involved.
551 7515343 Defective proliferation and regulatory function of CD4+ T cells bearing Leu-8 homing receptor in primary biliary cirrhosis.
552 7515343 The majority of circulating CD4+ T cells express the Leu-8 peripheral lymph node homing receptor, and these cells have previously been shown to have suppressor-inducer and suppressor function.
553 7515343 In the present study, it was found that CD4+, Leu-8+ T cells from patients with primary biliary cirrhosis (PBC) have a significantly (P < 0.01) lower proliferative response when stimulated with phytohemagglutinin (PHA), concanavalin A (Con A), or pokeweed mitogen (PWM) compared to normal controls.
554 7515343 The proliferative response of CD4+, Leu-8- T cells was similar in patients and controls.
555 7515343 However, the proliferative responses of CD4+, Leu-8+ from patients with PBC was normal when cells were stimulated with PHA, Con A, anti-CD3 monoclonal antibody, or ionomycin in combination with phorbol myristate acetate (PMA).
556 7515343 Thus, CD4+, Leu-8+ T cells from patients with PBC have a defect of proliferation and suppressor function that is reversed by coculture with PMA.
557 7515343 Defective proliferation and regulatory function of CD4+ T cells bearing Leu-8 homing receptor in primary biliary cirrhosis.
558 7515343 The majority of circulating CD4+ T cells express the Leu-8 peripheral lymph node homing receptor, and these cells have previously been shown to have suppressor-inducer and suppressor function.
559 7515343 In the present study, it was found that CD4+, Leu-8+ T cells from patients with primary biliary cirrhosis (PBC) have a significantly (P < 0.01) lower proliferative response when stimulated with phytohemagglutinin (PHA), concanavalin A (Con A), or pokeweed mitogen (PWM) compared to normal controls.
560 7515343 The proliferative response of CD4+, Leu-8- T cells was similar in patients and controls.
561 7515343 However, the proliferative responses of CD4+, Leu-8+ from patients with PBC was normal when cells were stimulated with PHA, Con A, anti-CD3 monoclonal antibody, or ionomycin in combination with phorbol myristate acetate (PMA).
562 7515343 Thus, CD4+, Leu-8+ T cells from patients with PBC have a defect of proliferation and suppressor function that is reversed by coculture with PMA.
563 7515343 Defective proliferation and regulatory function of CD4+ T cells bearing Leu-8 homing receptor in primary biliary cirrhosis.
564 7515343 The majority of circulating CD4+ T cells express the Leu-8 peripheral lymph node homing receptor, and these cells have previously been shown to have suppressor-inducer and suppressor function.
565 7515343 In the present study, it was found that CD4+, Leu-8+ T cells from patients with primary biliary cirrhosis (PBC) have a significantly (P < 0.01) lower proliferative response when stimulated with phytohemagglutinin (PHA), concanavalin A (Con A), or pokeweed mitogen (PWM) compared to normal controls.
566 7515343 The proliferative response of CD4+, Leu-8- T cells was similar in patients and controls.
567 7515343 However, the proliferative responses of CD4+, Leu-8+ from patients with PBC was normal when cells were stimulated with PHA, Con A, anti-CD3 monoclonal antibody, or ionomycin in combination with phorbol myristate acetate (PMA).
568 7515343 Thus, CD4+, Leu-8+ T cells from patients with PBC have a defect of proliferation and suppressor function that is reversed by coculture with PMA.
569 7515343 Defective proliferation and regulatory function of CD4+ T cells bearing Leu-8 homing receptor in primary biliary cirrhosis.
570 7515343 The majority of circulating CD4+ T cells express the Leu-8 peripheral lymph node homing receptor, and these cells have previously been shown to have suppressor-inducer and suppressor function.
571 7515343 In the present study, it was found that CD4+, Leu-8+ T cells from patients with primary biliary cirrhosis (PBC) have a significantly (P < 0.01) lower proliferative response when stimulated with phytohemagglutinin (PHA), concanavalin A (Con A), or pokeweed mitogen (PWM) compared to normal controls.
572 7515343 The proliferative response of CD4+, Leu-8- T cells was similar in patients and controls.
573 7515343 However, the proliferative responses of CD4+, Leu-8+ from patients with PBC was normal when cells were stimulated with PHA, Con A, anti-CD3 monoclonal antibody, or ionomycin in combination with phorbol myristate acetate (PMA).
574 7515343 Thus, CD4+, Leu-8+ T cells from patients with PBC have a defect of proliferation and suppressor function that is reversed by coculture with PMA.
575 7515343 Defective proliferation and regulatory function of CD4+ T cells bearing Leu-8 homing receptor in primary biliary cirrhosis.
576 7515343 The majority of circulating CD4+ T cells express the Leu-8 peripheral lymph node homing receptor, and these cells have previously been shown to have suppressor-inducer and suppressor function.
577 7515343 In the present study, it was found that CD4+, Leu-8+ T cells from patients with primary biliary cirrhosis (PBC) have a significantly (P < 0.01) lower proliferative response when stimulated with phytohemagglutinin (PHA), concanavalin A (Con A), or pokeweed mitogen (PWM) compared to normal controls.
578 7515343 The proliferative response of CD4+, Leu-8- T cells was similar in patients and controls.
579 7515343 However, the proliferative responses of CD4+, Leu-8+ from patients with PBC was normal when cells were stimulated with PHA, Con A, anti-CD3 monoclonal antibody, or ionomycin in combination with phorbol myristate acetate (PMA).
580 7515343 Thus, CD4+, Leu-8+ T cells from patients with PBC have a defect of proliferation and suppressor function that is reversed by coculture with PMA.
581 7515343 Defective proliferation and regulatory function of CD4+ T cells bearing Leu-8 homing receptor in primary biliary cirrhosis.
582 7515343 The majority of circulating CD4+ T cells express the Leu-8 peripheral lymph node homing receptor, and these cells have previously been shown to have suppressor-inducer and suppressor function.
583 7515343 In the present study, it was found that CD4+, Leu-8+ T cells from patients with primary biliary cirrhosis (PBC) have a significantly (P < 0.01) lower proliferative response when stimulated with phytohemagglutinin (PHA), concanavalin A (Con A), or pokeweed mitogen (PWM) compared to normal controls.
584 7515343 The proliferative response of CD4+, Leu-8- T cells was similar in patients and controls.
585 7515343 However, the proliferative responses of CD4+, Leu-8+ from patients with PBC was normal when cells were stimulated with PHA, Con A, anti-CD3 monoclonal antibody, or ionomycin in combination with phorbol myristate acetate (PMA).
586 7515343 Thus, CD4+, Leu-8+ T cells from patients with PBC have a defect of proliferation and suppressor function that is reversed by coculture with PMA.
587 7519242 Higher autoantibody levels and recognition of a linear NH2-terminal epitope in the autoantigen GAD65, distinguish stiff-man syndrome from insulin-dependent diabetes mellitus.
588 7519242 Thus, destruction of pancreatic beta cells, which results in insulin-dependent diabetes mellitus (IDDM), and impairment of GABA-ergic synaptic transmission in Stiff-Man syndrome (SMS) are both characterized by circulating autoantibodies to GAD65.
589 7519242 Here we report the characterization of humoral autoimmune responses to GAD65 in 35 SMS patients, of whom 13 (37%) also had IDDM.
590 7519242 All SMS patients immunoprecipitated native GAD65 and the main titers were orders of magnitude higher than in IDDM patients.
591 7519242 Furthermore, in contrast to the situation in IDDM, autoantibodies in 35 of 35 (100%) of SMS patients recognized denatured GAD65 on Western blots.
592 7519242 The first pattern, detected in 25 of 35 SMS patients (71%), of whom 11 had IDDM (44%), was predominantly reactive with a linear NH2-terminal epitope residing in the first eight amino acids of GAD65.
593 7519242 The second epitope pattern may represent epitope spreading in the GAD65 molecule, but may also include some cases of epitope recognition associated with IDDM resistant HLA-haplotypes.
594 7519242 The principal NH2-terminal linear epitope in GAD65 distinguishes the reactivity of SMS and IDDM autoantibodies and may be a determinant of pathogenicity for GABA-ergic neurons.
595 7519242 The greater magnitude and distinct specificity of the humoral response to GAD65 in SMS may reflect a biased involvement of the T helper cell type 2 (Th2) subset of CD4+ T cells and antibody responses, whereas IDDM is likely mediated by the Th1 subset of CD4+ T cells and cytotoxic T cell responses.
596 7525431 Reduced numbers of CD8+ T cells and B cell-expression of Leu-8 antigen in peripheral blood of patients with primary biliary cirrhosis.
597 7525431 In PBC the proportion of PBMC that were CD4+ was normal; in contrast, the proportion that were CD8+ was decreased (p < 0.01).
598 7525431 These findings suggest that in peripheral blood of PBC patients reduced numbers of T cells may occur due to a selective intrahepatic sequestration of CD8+ T cells, and that the decreased expression of Leu-8 antigen by B cells may be associated with their participation in autoimmune processes.
599 7534735 A CD8+ T-lymphocyte-mediated and CD4+ T-lymphocyte-independent autoimmune diabetes of early onset in transgenic mice.
600 7534735 While transgenic mice expressing tumour necrosis factor-alpha under the control of the beta-cell-specific insulin promoter display a marked lymphocytic infiltration of the islets, they never develop insulin-dependent diabetes mellitus (IDDM).
601 7534735 These results indicate that while tumour necrosis factor-alpha induced lymphocytic infiltration is not sufficient to effect beta-cell destruction, locally co-stimulated islet-infiltrating CD8+ T lymphocytes could play a critical role in the development of IDDM.
602 7540575 Transgenic mice that express mouse B7-1 (mB7-1, recently designated CD80) on their pancreatic beta-cells maintain normal islet architecture, have normal pancreatic insulin content, and only rarely spontaneously develop insulitis and diabetes.
603 7540575 While this insulitis resolved in the nontransgenic mice, the islet-infiltrating CD4+ and CD8+ T-cells in the transgenic mice were associated with complete beta-cell destruction.
604 7545875 Autorecognition of many self-proteins by CD4+ T lymphocytes is restricted by the products of class II immune response genes of the major histocompatibility complex (MHC), and in human type I diabetes such a MHC association has been described.
605 7545875 The present study uses a rat MHC class II (RT1.Bl) peptide binding motif to predict potentially autoreactive CD4+ T cell epitopes in two key islet beta-cell constituents: the enzyme glutamic acid decarboxylase (GAD) and the insulin precursor hormone proinsulin (PI).
606 7545875 Seventeen-amino-acid-long peptide fragments of GAD and PI containing the binding motif were synthesized and used to generate peptide-specific, MHC class II-restricted, CD4+ T cell lines.
607 7545875 Once established, the T cell lines specific for rat islet GAD and PI were adoptively transferred to naive, MHC-compatible rats.
608 7545875 Autorecognition of many self-proteins by CD4+ T lymphocytes is restricted by the products of class II immune response genes of the major histocompatibility complex (MHC), and in human type I diabetes such a MHC association has been described.
609 7545875 The present study uses a rat MHC class II (RT1.Bl) peptide binding motif to predict potentially autoreactive CD4+ T cell epitopes in two key islet beta-cell constituents: the enzyme glutamic acid decarboxylase (GAD) and the insulin precursor hormone proinsulin (PI).
610 7545875 Seventeen-amino-acid-long peptide fragments of GAD and PI containing the binding motif were synthesized and used to generate peptide-specific, MHC class II-restricted, CD4+ T cell lines.
611 7545875 Once established, the T cell lines specific for rat islet GAD and PI were adoptively transferred to naive, MHC-compatible rats.
612 7545875 Autorecognition of many self-proteins by CD4+ T lymphocytes is restricted by the products of class II immune response genes of the major histocompatibility complex (MHC), and in human type I diabetes such a MHC association has been described.
613 7545875 The present study uses a rat MHC class II (RT1.Bl) peptide binding motif to predict potentially autoreactive CD4+ T cell epitopes in two key islet beta-cell constituents: the enzyme glutamic acid decarboxylase (GAD) and the insulin precursor hormone proinsulin (PI).
614 7545875 Seventeen-amino-acid-long peptide fragments of GAD and PI containing the binding motif were synthesized and used to generate peptide-specific, MHC class II-restricted, CD4+ T cell lines.
615 7545875 Once established, the T cell lines specific for rat islet GAD and PI were adoptively transferred to naive, MHC-compatible rats.
616 7554346 Increased and decreased relative risk for non-insulin-dependent diabetes mellitus conferred by HLA class II and by CD4 alleles.
617 7554346 In this study the association of HLA class II alleles and genotypes and the association of CD4 and CD3 polymorphisms were assessed in a large number of Belgian non-insulin-dependent diabetes mellitus patients.
618 7554346 These results therefore suggest that HLA class II and CD4 genes might independently contribute to the susceptibility for non-insulin-dependent diabetes mellitus and that these alleles and genotypes might identify subgroups of patients with different susceptibilities.
619 7554346 Increased and decreased relative risk for non-insulin-dependent diabetes mellitus conferred by HLA class II and by CD4 alleles.
620 7554346 In this study the association of HLA class II alleles and genotypes and the association of CD4 and CD3 polymorphisms were assessed in a large number of Belgian non-insulin-dependent diabetes mellitus patients.
621 7554346 These results therefore suggest that HLA class II and CD4 genes might independently contribute to the susceptibility for non-insulin-dependent diabetes mellitus and that these alleles and genotypes might identify subgroups of patients with different susceptibilities.
622 7554346 Increased and decreased relative risk for non-insulin-dependent diabetes mellitus conferred by HLA class II and by CD4 alleles.
623 7554346 In this study the association of HLA class II alleles and genotypes and the association of CD4 and CD3 polymorphisms were assessed in a large number of Belgian non-insulin-dependent diabetes mellitus patients.
624 7554346 These results therefore suggest that HLA class II and CD4 genes might independently contribute to the susceptibility for non-insulin-dependent diabetes mellitus and that these alleles and genotypes might identify subgroups of patients with different susceptibilities.
625 7578872 In parallel studies, normal Swiss male mice given stz at a similar dose developed diabetes (10/10) associated with insulitis which consisted predominantly of CD4, CD8 and MAC-1 cells.
626 7578887 The percentage of CD4+PBL was higher in NOD/Smrf females than males, was intermediate in [NOD X NON] F1 mice and approximated a 1:1 distribution in F1 mice backcrossed to either NOD or NON parental strains, suggesting primary control of the phenotype by an incompletely dominant gene, but not excluding additional effects by other genes.
627 7578887 We term this primary gene Tlf(T lymphocyte frequency) because it also influenced the percentage of CD8+ T cells, although to lesser extent and independently from the MHC previously shown to lower the CD8+ T cell fraction in NON mice.
628 7578887 Dihydrotestosterone simultaneously lowered CD4+ PBL levels and prevented diabetes in NOD females while, in vitro, it had a differential effect on Con A elicited cytokines, increasing IL-2 22% and decreasing IL-4 39% (p < 0.0001).
629 7578887 The percentage of CD4+PBL was higher in NOD/Smrf females than males, was intermediate in [NOD X NON] F1 mice and approximated a 1:1 distribution in F1 mice backcrossed to either NOD or NON parental strains, suggesting primary control of the phenotype by an incompletely dominant gene, but not excluding additional effects by other genes.
630 7578887 We term this primary gene Tlf(T lymphocyte frequency) because it also influenced the percentage of CD8+ T cells, although to lesser extent and independently from the MHC previously shown to lower the CD8+ T cell fraction in NON mice.
631 7578887 Dihydrotestosterone simultaneously lowered CD4+ PBL levels and prevented diabetes in NOD females while, in vitro, it had a differential effect on Con A elicited cytokines, increasing IL-2 22% and decreasing IL-4 39% (p < 0.0001).
632 7586687 Insulin-like growth factor-1 (IGF-1) protects NOD mice from insulitis and diabetes.
633 7586687 The percentages of CD4+ and CD8+ T cells in the spleen of experimental mice were similar.
634 7587921 This study was undertaken to determine whether this reduced lymphocyte proliferation is mediated by a decreased production of cytokine or decreased expression of interleukin-2 receptor (IL-2R).
635 7587921 However, the production of IL-1 beta, IL-2 and interferon-gamma, the percentages of pan T cells (CD3), T helper cells (CD4), T suppressor cells (CD8), the ratio of CD4/CD8 and the expression of CR1 and Fc receptors for immunoglobulin G (Fc gamma RII and Fc gamma RIII) were not significantly different between NIDDM patients and healthy subjects.
636 7587921 These findings suggest that decreased expression of CR3 on monocytes, decreased lymphocyte proliferation and decreased IL-2R expression despite a higher production of TNF-alpha may explain the impaired cell-mediated immunity seen in NIDDM patients.
637 7589146 Autoimmune gastritis, induced by day-3 thymectomy of BALB/c mice, is a destructive CD4+ T cell-mediated disease characterized by leukocyte infiltrates in the gastric mucosa, loss of parietal and chief cells and anti-gastric H/K ATPase autoantibodies.
638 7589848 Aberrant activation of CD8+ T-cell and CD8+ T-cell subsets in patients with newly diagnosed IDDM.
639 7589848 Two- and three-color cytofluorimetric techniques were used to study the expression patterns of the activation antigen HLA-DR on peripheral blood immunoregulatory T-cells from 25 patients with newly diagnosed insulin-dependent diabetes mellitus (IDDM) and 14 age- and sex-matched control subjects.
640 7589848 In control subjects, basal activation of CD4+ and CD8+ lymphocytes accounted for the low percentage levels of activated T-cells.
641 7589848 In contrast, the majority of IDDM patients showed an unbalanced activation of CD4+ and CD8+ lymphocytes with predominant activation of the CD8+ lymphocyte subset.
642 7589848 The composition of the activated T-cell fraction was dependent on the composition of the total (activated + nonactivated) T-cell population, as indicated by the positive correlation between the CD4+/CD8+ T-cell ratios in these two cell populations (r = 0.714; P < 0.001).
643 7589848 Analysis of the CD11b-defined subsets revealed predominant activation of CD8+ CD11b- (cytotoxic) T-cells; CD8+ CD16+ HLA-DR+ natural killer cells were unchanged.
644 7589848 The distribution of HLA-DR+ cells among subsets of CD4+ T-cells differed from the pattern in the CD8+ population in that selective activation of CD4+ CD45RA- (memory, helper-inducer) cells accounted for the small increase in activated CD4+ cells.
645 7589848 Aberrant activation of CD8+ T-cell and CD8+ T-cell subsets in patients with newly diagnosed IDDM.
646 7589848 Two- and three-color cytofluorimetric techniques were used to study the expression patterns of the activation antigen HLA-DR on peripheral blood immunoregulatory T-cells from 25 patients with newly diagnosed insulin-dependent diabetes mellitus (IDDM) and 14 age- and sex-matched control subjects.
647 7589848 In control subjects, basal activation of CD4+ and CD8+ lymphocytes accounted for the low percentage levels of activated T-cells.
648 7589848 In contrast, the majority of IDDM patients showed an unbalanced activation of CD4+ and CD8+ lymphocytes with predominant activation of the CD8+ lymphocyte subset.
649 7589848 The composition of the activated T-cell fraction was dependent on the composition of the total (activated + nonactivated) T-cell population, as indicated by the positive correlation between the CD4+/CD8+ T-cell ratios in these two cell populations (r = 0.714; P < 0.001).
650 7589848 Analysis of the CD11b-defined subsets revealed predominant activation of CD8+ CD11b- (cytotoxic) T-cells; CD8+ CD16+ HLA-DR+ natural killer cells were unchanged.
651 7589848 The distribution of HLA-DR+ cells among subsets of CD4+ T-cells differed from the pattern in the CD8+ population in that selective activation of CD4+ CD45RA- (memory, helper-inducer) cells accounted for the small increase in activated CD4+ cells.
652 7589848 Aberrant activation of CD8+ T-cell and CD8+ T-cell subsets in patients with newly diagnosed IDDM.
653 7589848 Two- and three-color cytofluorimetric techniques were used to study the expression patterns of the activation antigen HLA-DR on peripheral blood immunoregulatory T-cells from 25 patients with newly diagnosed insulin-dependent diabetes mellitus (IDDM) and 14 age- and sex-matched control subjects.
654 7589848 In control subjects, basal activation of CD4+ and CD8+ lymphocytes accounted for the low percentage levels of activated T-cells.
655 7589848 In contrast, the majority of IDDM patients showed an unbalanced activation of CD4+ and CD8+ lymphocytes with predominant activation of the CD8+ lymphocyte subset.
656 7589848 The composition of the activated T-cell fraction was dependent on the composition of the total (activated + nonactivated) T-cell population, as indicated by the positive correlation between the CD4+/CD8+ T-cell ratios in these two cell populations (r = 0.714; P < 0.001).
657 7589848 Analysis of the CD11b-defined subsets revealed predominant activation of CD8+ CD11b- (cytotoxic) T-cells; CD8+ CD16+ HLA-DR+ natural killer cells were unchanged.
658 7589848 The distribution of HLA-DR+ cells among subsets of CD4+ T-cells differed from the pattern in the CD8+ population in that selective activation of CD4+ CD45RA- (memory, helper-inducer) cells accounted for the small increase in activated CD4+ cells.
659 7589848 Aberrant activation of CD8+ T-cell and CD8+ T-cell subsets in patients with newly diagnosed IDDM.
660 7589848 Two- and three-color cytofluorimetric techniques were used to study the expression patterns of the activation antigen HLA-DR on peripheral blood immunoregulatory T-cells from 25 patients with newly diagnosed insulin-dependent diabetes mellitus (IDDM) and 14 age- and sex-matched control subjects.
661 7589848 In control subjects, basal activation of CD4+ and CD8+ lymphocytes accounted for the low percentage levels of activated T-cells.
662 7589848 In contrast, the majority of IDDM patients showed an unbalanced activation of CD4+ and CD8+ lymphocytes with predominant activation of the CD8+ lymphocyte subset.
663 7589848 The composition of the activated T-cell fraction was dependent on the composition of the total (activated + nonactivated) T-cell population, as indicated by the positive correlation between the CD4+/CD8+ T-cell ratios in these two cell populations (r = 0.714; P < 0.001).
664 7589848 Analysis of the CD11b-defined subsets revealed predominant activation of CD8+ CD11b- (cytotoxic) T-cells; CD8+ CD16+ HLA-DR+ natural killer cells were unchanged.
665 7589848 The distribution of HLA-DR+ cells among subsets of CD4+ T-cells differed from the pattern in the CD8+ population in that selective activation of CD4+ CD45RA- (memory, helper-inducer) cells accounted for the small increase in activated CD4+ cells.
666 7589882 Low bcl-2 expression and increased spontaneous apoptosis in T-lymphocytes from newly-diagnosed IDDM patients.
667 7589882 No data exist regarding bcl-2 expression in autoimmune diseases, such as human insulin-dependent diabetes mellitus (IDDM).
668 7589882 We investigated bcl-2 protein expression by testing T lymphocytes from 15 newly-diagnosed (< 3 weeks) IDDM patients in comparison to 10 age-matched control subjects.
669 7589882 When the percentage and mean fluorescence intensity (MFI) of bcl-2+/CD3+ cells from normal individuals and patients were compared, we found that bcl-2 expression within the CD3+ and CD4+ CD45R0+ T-cell populations was reduced significantly in IDDM patients (46.8 +/- 15.4 vs 79.6 +/- 11.7; 25.7 +/- 3.8 vs 47.15 +/- 5.7, respectively; p < 0.001).
670 7589882 Our study suggests that recent onset IDDM is characterised by reduced bcl-2 expression, which in turn may be associated with the increased spontaneous apoptosis we observed.
671 7590418 The factors determining the outcome of human fetal islet transplantation in patients with insulin-dependent diabetes mellitus (IDDM) remain unclarified.
672 7590418 After transplantation we evaluated simultaneously the level of metabolic control through HbA1c values determined by chromatography, the capacity of insulin secretion through the C-peptide levels (determined by radioimmunoassay) before and 6 minutes after 1 mg glucagon i.v. stimulation, and the ratio between CD4+ and CD8+ lymphocytes determined by immunofluorescence using monoclonal antibodies.
673 7590418 However, the loss of islet function was preceded by the increase in CD4+/CD8+ ratio, thus reflecting the presumable accumulation of CD4+ inducer T-lymphocytes.
674 7590418 When the islet secretion capacity was destroyed, we found a decrease in CD4+/CD8+ ratio, reflecting the recruitment of CD8+ effector cells.
675 7590418 The factors determining the outcome of human fetal islet transplantation in patients with insulin-dependent diabetes mellitus (IDDM) remain unclarified.
676 7590418 After transplantation we evaluated simultaneously the level of metabolic control through HbA1c values determined by chromatography, the capacity of insulin secretion through the C-peptide levels (determined by radioimmunoassay) before and 6 minutes after 1 mg glucagon i.v. stimulation, and the ratio between CD4+ and CD8+ lymphocytes determined by immunofluorescence using monoclonal antibodies.
677 7590418 However, the loss of islet function was preceded by the increase in CD4+/CD8+ ratio, thus reflecting the presumable accumulation of CD4+ inducer T-lymphocytes.
678 7590418 When the islet secretion capacity was destroyed, we found a decrease in CD4+/CD8+ ratio, reflecting the recruitment of CD8+ effector cells.
679 7590418 The factors determining the outcome of human fetal islet transplantation in patients with insulin-dependent diabetes mellitus (IDDM) remain unclarified.
680 7590418 After transplantation we evaluated simultaneously the level of metabolic control through HbA1c values determined by chromatography, the capacity of insulin secretion through the C-peptide levels (determined by radioimmunoassay) before and 6 minutes after 1 mg glucagon i.v. stimulation, and the ratio between CD4+ and CD8+ lymphocytes determined by immunofluorescence using monoclonal antibodies.
681 7590418 However, the loss of islet function was preceded by the increase in CD4+/CD8+ ratio, thus reflecting the presumable accumulation of CD4+ inducer T-lymphocytes.
682 7590418 When the islet secretion capacity was destroyed, we found a decrease in CD4+/CD8+ ratio, reflecting the recruitment of CD8+ effector cells.
683 7612149 Lymphocytes were also characterized for the expression of CD4 and CD8 T cell markers and, within each population, for the expression of activation markers (CD25, CD69) and adhesion markers (CD51, CD54, CD11b, CD49e, L-selectin).
684 7612149 Significantly increased levels of CD4+CD8+ double-positive and CD4-CD8- double-negative T cell populations were observed in the infiltrating lymphocytes as compared with peripheral lymphocytes.
685 7612149 In addition, within both CD4 and CD8 subpopulations isolated from islet infiltrates, CD11b+ and CD49e+ cells were increased with respect to the same subset of cells isolated from the periphery.
686 7612149 In contrast, the level of cells that expressed L-selectin was significantly higher in the periphery for both CD4+ and CD8+ cells than for infiltrating cells.
687 7612149 Lymphocytes were also characterized for the expression of CD4 and CD8 T cell markers and, within each population, for the expression of activation markers (CD25, CD69) and adhesion markers (CD51, CD54, CD11b, CD49e, L-selectin).
688 7612149 Significantly increased levels of CD4+CD8+ double-positive and CD4-CD8- double-negative T cell populations were observed in the infiltrating lymphocytes as compared with peripheral lymphocytes.
689 7612149 In addition, within both CD4 and CD8 subpopulations isolated from islet infiltrates, CD11b+ and CD49e+ cells were increased with respect to the same subset of cells isolated from the periphery.
690 7612149 In contrast, the level of cells that expressed L-selectin was significantly higher in the periphery for both CD4+ and CD8+ cells than for infiltrating cells.
691 7612149 Lymphocytes were also characterized for the expression of CD4 and CD8 T cell markers and, within each population, for the expression of activation markers (CD25, CD69) and adhesion markers (CD51, CD54, CD11b, CD49e, L-selectin).
692 7612149 Significantly increased levels of CD4+CD8+ double-positive and CD4-CD8- double-negative T cell populations were observed in the infiltrating lymphocytes as compared with peripheral lymphocytes.
693 7612149 In addition, within both CD4 and CD8 subpopulations isolated from islet infiltrates, CD11b+ and CD49e+ cells were increased with respect to the same subset of cells isolated from the periphery.
694 7612149 In contrast, the level of cells that expressed L-selectin was significantly higher in the periphery for both CD4+ and CD8+ cells than for infiltrating cells.
695 7612149 Lymphocytes were also characterized for the expression of CD4 and CD8 T cell markers and, within each population, for the expression of activation markers (CD25, CD69) and adhesion markers (CD51, CD54, CD11b, CD49e, L-selectin).
696 7612149 Significantly increased levels of CD4+CD8+ double-positive and CD4-CD8- double-negative T cell populations were observed in the infiltrating lymphocytes as compared with peripheral lymphocytes.
697 7612149 In addition, within both CD4 and CD8 subpopulations isolated from islet infiltrates, CD11b+ and CD49e+ cells were increased with respect to the same subset of cells isolated from the periphery.
698 7612149 In contrast, the level of cells that expressed L-selectin was significantly higher in the periphery for both CD4+ and CD8+ cells than for infiltrating cells.
699 7621990 Intrathymic transplantation of islet antigen affects CD8+ diabetogenic T-cells resulting in tolerance to autoimmune IDDM.
700 7621990 Normally, islet antigens that are involved in insulin-dependent diabetes mellitus (IDDM) are not present in the thymus, but we have previously shown that transplantation of islets expressing relevant antigens into the thymus at the time of T-cell maturation results in prevention of IDDM in the multidose streptozotocin model of diabetes mellitus (MDSDM).
701 7621990 Although both CD4+ and CD8+ T-cells are involved in the pathogenesis of this disease, the cells affected by intrathymic transplantation of islets are unknown.
702 7621990 Streptozotocin (STZ)-treated syngeneic islets were transplanted into the thymuses of C57BL/KsJ mice, and CD4+, CD8+, or both subsets of cells were transiently depleted with monoclonal antibodies (mAbs).
703 7621990 Intrathymic transplantation of islet antigen affects CD8+ diabetogenic T-cells resulting in tolerance to autoimmune IDDM.
704 7621990 Normally, islet antigens that are involved in insulin-dependent diabetes mellitus (IDDM) are not present in the thymus, but we have previously shown that transplantation of islets expressing relevant antigens into the thymus at the time of T-cell maturation results in prevention of IDDM in the multidose streptozotocin model of diabetes mellitus (MDSDM).
705 7621990 Although both CD4+ and CD8+ T-cells are involved in the pathogenesis of this disease, the cells affected by intrathymic transplantation of islets are unknown.
706 7621990 Streptozotocin (STZ)-treated syngeneic islets were transplanted into the thymuses of C57BL/KsJ mice, and CD4+, CD8+, or both subsets of cells were transiently depleted with monoclonal antibodies (mAbs).
707 7647584 Markers of cell-mediated immune activation were studied in 32 Chinese patients with recent-onset insulin-dependent diabetes mellitus (IDDM) as compared with 12 patients with recent-onset non-insulin-dependent diabetes mellitus (NIDDM) and 34 normal subjects.
708 7647584 Sera were assessed for soluble markers of T-cell activation (sCD4, sCD8, sIL-2R); the cytokines (IL-1 beta, TNF-alpha, IL-2, IL-6), and T-cell subsets were also determined.
709 7647584 Three IDDM patients had detectable IL-1 beta and this weakly so (< 3.5 pg/ml).
710 7647584 However, the other cytokine data and the frequency of activated T-cells, CD4+, CD8+ T-cell subsets and CD4:CD8 ratio showed no significant differences among the IDDM, NIDDM and normal subjects.
711 7660685 The uniform finding is that T cells are made hyporesponsive, and that the most likely mechanism is one of active suppression mediated through the selective activation of T cells, of either CD4+ or CD8+ phenotype, that make cytokines which in turn can suppress pathological T cells responsible for the disease lesions.
712 7682590 Distinct patterns of inflammation in TNF-alpha and TNF-beta transgenic mice.
713 7682590 To understand the role of TNF in the regulation of inflammation and the development of autoimmune diseases such as insulin-dependent diabetes mellitus, we produced transgenic mice in which the synthesis of murine TNF-alpha was directed by the rat insulin II promoter.
714 7682590 The expression of the TNF-alpha transgene was restricted to the pancreas, in contrast to TNF-beta expression from the same promoter, in which the transgene was expressed in the pancreas, kidney, and skin.
715 7682590 The expression of TNF-alpha in the pancreas of transgenic mice resulted in an overwhelming insulitis, composed of CD4+ and CD8+ T cells and B220+ B cells, considerably greater than that of TNF-beta transgenics.
716 7682590 Moreover, in contrast to the predominant peri-insulitis observed in TNF-beta transgenic mice, the majority of the infiltrate in the TNF-alpha transgenic mice was within the islet itself.
717 7682590 Both TNF-alpha and TNF-beta transgenic mice show elevated expression of leukocyte adhesion molecules VCAM-1 and ICAM-1 in islet endothelia and increased expression of MHC class I on islet cells.
718 7684344 Aberrant distribution of CD4 and CD8 lymphocyte subsets in recent-onset IDDM patients.
719 7684344 The monoclonal antibodies 2H4 and 4B4 are specifically directed against CD45RA and CD29 antigens, respectively, which are expressed on both CD4+ and CD8+ lymphocytes.
720 7684344 CD45RA and CD29 are expressed on distinct subsets of CD4+ T-cells, whereas in both healthy subjects and IDDM patients, 2H4 and 4B4 labeling does not always differentiate two distinct CD8+ populations.
721 7684344 Before cyclosporin treatment, recent-onset IDDM patients had a significantly lower proportion of CD4+CD29+ cells than the healthy control subjects (42 +/- 11 vs. 52 +/- 9%, P < 0.004).
722 7684344 This imbalance corresponded to a significant increase in the CD4+ CD45RA+/CD4+ CD29+ ratio in the IDDM patients (1.37 +/- 0.93 vs. 0.78 +/- 0.36, P < 0.014).
723 7684344 The mean density of the CD45RA antigen (but not that of CD29) on both CD4+ and CD8+ cells was significantly higher in the IDDM patients before treatment than in the healthy control subjects.
724 7684344 Cyclosporin use was associated with a significant decrease in CD45RA antigen density on both CD4+ and CD8+ T-cells.
725 7684344 Aberrant distribution of CD4 and CD8 lymphocyte subsets in recent-onset IDDM patients.
726 7684344 The monoclonal antibodies 2H4 and 4B4 are specifically directed against CD45RA and CD29 antigens, respectively, which are expressed on both CD4+ and CD8+ lymphocytes.
727 7684344 CD45RA and CD29 are expressed on distinct subsets of CD4+ T-cells, whereas in both healthy subjects and IDDM patients, 2H4 and 4B4 labeling does not always differentiate two distinct CD8+ populations.
728 7684344 Before cyclosporin treatment, recent-onset IDDM patients had a significantly lower proportion of CD4+CD29+ cells than the healthy control subjects (42 +/- 11 vs. 52 +/- 9%, P < 0.004).
729 7684344 This imbalance corresponded to a significant increase in the CD4+ CD45RA+/CD4+ CD29+ ratio in the IDDM patients (1.37 +/- 0.93 vs. 0.78 +/- 0.36, P < 0.014).
730 7684344 The mean density of the CD45RA antigen (but not that of CD29) on both CD4+ and CD8+ cells was significantly higher in the IDDM patients before treatment than in the healthy control subjects.
731 7684344 Cyclosporin use was associated with a significant decrease in CD45RA antigen density on both CD4+ and CD8+ T-cells.
732 7684344 Aberrant distribution of CD4 and CD8 lymphocyte subsets in recent-onset IDDM patients.
733 7684344 The monoclonal antibodies 2H4 and 4B4 are specifically directed against CD45RA and CD29 antigens, respectively, which are expressed on both CD4+ and CD8+ lymphocytes.
734 7684344 CD45RA and CD29 are expressed on distinct subsets of CD4+ T-cells, whereas in both healthy subjects and IDDM patients, 2H4 and 4B4 labeling does not always differentiate two distinct CD8+ populations.
735 7684344 Before cyclosporin treatment, recent-onset IDDM patients had a significantly lower proportion of CD4+CD29+ cells than the healthy control subjects (42 +/- 11 vs. 52 +/- 9%, P < 0.004).
736 7684344 This imbalance corresponded to a significant increase in the CD4+ CD45RA+/CD4+ CD29+ ratio in the IDDM patients (1.37 +/- 0.93 vs. 0.78 +/- 0.36, P < 0.014).
737 7684344 The mean density of the CD45RA antigen (but not that of CD29) on both CD4+ and CD8+ cells was significantly higher in the IDDM patients before treatment than in the healthy control subjects.
738 7684344 Cyclosporin use was associated with a significant decrease in CD45RA antigen density on both CD4+ and CD8+ T-cells.
739 7684344 Aberrant distribution of CD4 and CD8 lymphocyte subsets in recent-onset IDDM patients.
740 7684344 The monoclonal antibodies 2H4 and 4B4 are specifically directed against CD45RA and CD29 antigens, respectively, which are expressed on both CD4+ and CD8+ lymphocytes.
741 7684344 CD45RA and CD29 are expressed on distinct subsets of CD4+ T-cells, whereas in both healthy subjects and IDDM patients, 2H4 and 4B4 labeling does not always differentiate two distinct CD8+ populations.
742 7684344 Before cyclosporin treatment, recent-onset IDDM patients had a significantly lower proportion of CD4+CD29+ cells than the healthy control subjects (42 +/- 11 vs. 52 +/- 9%, P < 0.004).
743 7684344 This imbalance corresponded to a significant increase in the CD4+ CD45RA+/CD4+ CD29+ ratio in the IDDM patients (1.37 +/- 0.93 vs. 0.78 +/- 0.36, P < 0.014).
744 7684344 The mean density of the CD45RA antigen (but not that of CD29) on both CD4+ and CD8+ cells was significantly higher in the IDDM patients before treatment than in the healthy control subjects.
745 7684344 Cyclosporin use was associated with a significant decrease in CD45RA antigen density on both CD4+ and CD8+ T-cells.
746 7684344 Aberrant distribution of CD4 and CD8 lymphocyte subsets in recent-onset IDDM patients.
747 7684344 The monoclonal antibodies 2H4 and 4B4 are specifically directed against CD45RA and CD29 antigens, respectively, which are expressed on both CD4+ and CD8+ lymphocytes.
748 7684344 CD45RA and CD29 are expressed on distinct subsets of CD4+ T-cells, whereas in both healthy subjects and IDDM patients, 2H4 and 4B4 labeling does not always differentiate two distinct CD8+ populations.
749 7684344 Before cyclosporin treatment, recent-onset IDDM patients had a significantly lower proportion of CD4+CD29+ cells than the healthy control subjects (42 +/- 11 vs. 52 +/- 9%, P < 0.004).
750 7684344 This imbalance corresponded to a significant increase in the CD4+ CD45RA+/CD4+ CD29+ ratio in the IDDM patients (1.37 +/- 0.93 vs. 0.78 +/- 0.36, P < 0.014).
751 7684344 The mean density of the CD45RA antigen (but not that of CD29) on both CD4+ and CD8+ cells was significantly higher in the IDDM patients before treatment than in the healthy control subjects.
752 7684344 Cyclosporin use was associated with a significant decrease in CD45RA antigen density on both CD4+ and CD8+ T-cells.
753 7684344 Aberrant distribution of CD4 and CD8 lymphocyte subsets in recent-onset IDDM patients.
754 7684344 The monoclonal antibodies 2H4 and 4B4 are specifically directed against CD45RA and CD29 antigens, respectively, which are expressed on both CD4+ and CD8+ lymphocytes.
755 7684344 CD45RA and CD29 are expressed on distinct subsets of CD4+ T-cells, whereas in both healthy subjects and IDDM patients, 2H4 and 4B4 labeling does not always differentiate two distinct CD8+ populations.
756 7684344 Before cyclosporin treatment, recent-onset IDDM patients had a significantly lower proportion of CD4+CD29+ cells than the healthy control subjects (42 +/- 11 vs. 52 +/- 9%, P < 0.004).
757 7684344 This imbalance corresponded to a significant increase in the CD4+ CD45RA+/CD4+ CD29+ ratio in the IDDM patients (1.37 +/- 0.93 vs. 0.78 +/- 0.36, P < 0.014).
758 7684344 The mean density of the CD45RA antigen (but not that of CD29) on both CD4+ and CD8+ cells was significantly higher in the IDDM patients before treatment than in the healthy control subjects.
759 7684344 Cyclosporin use was associated with a significant decrease in CD45RA antigen density on both CD4+ and CD8+ T-cells.
760 7684344 Aberrant distribution of CD4 and CD8 lymphocyte subsets in recent-onset IDDM patients.
761 7684344 The monoclonal antibodies 2H4 and 4B4 are specifically directed against CD45RA and CD29 antigens, respectively, which are expressed on both CD4+ and CD8+ lymphocytes.
762 7684344 CD45RA and CD29 are expressed on distinct subsets of CD4+ T-cells, whereas in both healthy subjects and IDDM patients, 2H4 and 4B4 labeling does not always differentiate two distinct CD8+ populations.
763 7684344 Before cyclosporin treatment, recent-onset IDDM patients had a significantly lower proportion of CD4+CD29+ cells than the healthy control subjects (42 +/- 11 vs. 52 +/- 9%, P < 0.004).
764 7684344 This imbalance corresponded to a significant increase in the CD4+ CD45RA+/CD4+ CD29+ ratio in the IDDM patients (1.37 +/- 0.93 vs. 0.78 +/- 0.36, P < 0.014).
765 7684344 The mean density of the CD45RA antigen (but not that of CD29) on both CD4+ and CD8+ cells was significantly higher in the IDDM patients before treatment than in the healthy control subjects.
766 7684344 Cyclosporin use was associated with a significant decrease in CD45RA antigen density on both CD4+ and CD8+ T-cells.
767 7696203 Local production of human IL-6 promotes insulitis but retards the onset of insulin-dependent diabetes mellitus in non-obese diabetic mice.
768 7696203 Immunohistochemistry reveals these cells to be predominantly CD4+, CD8+, B220+ cells.
769 7696203 Transgenic rat insulin promoter-IL-6 mice were therefore also made on an inbred NOD background.
770 7714099 Activation of T lymphocyte subsets by synthetic TSH receptor peptides and recombinant glutamate decarboxylase in autoimmune thyroid disease and insulin-dependent diabetes.
771 7714099 In this context, we have measured the proliferative responses of peripheral blood mononuclear cells (PBMC) to the synthetic peptides corresponding to the extracellular domain of the TSH receptor (TSHR) and recombinant glutamate decarboxylase (GAD65) by means of 3H thymidine incorporation.
772 7714099 We have also studied the antigenic activation of CD4+ and CD8+ T lymphocytes by measuring human leukocyte antigen-DR (HLA-DR) expression on the cell surface by flow cytometric analysis.
773 7714099 PBMC obtained from 47 patients with Graves' disease (GD) [including 19 hyperthyroid GD (hyper GD)], 18 with Hashimoto's thyroiditis (HT), 7 with nontoxic nodular goiter (NG), 18 with insulin-dependent diabetes (IDDM), and 20 normal controls (N), were cultured for 7 days in the presence or absence of the pool peptides representing 3 different segments of TSHR or GAD65 at final concentration of 30 micrograms/mL or 10 micrograms/mL.
774 7714099 The proportion of subjects whose PBMC gave a positive proliferative response with a stimulation index (SI) of over 2.3 (i.e. above the mean +2 SD for N) to TSHR peptides was significantly higher in the hyper GD group than among euthyroid GD (eu GD), HT, IDDM, and N group.
775 7714099 The CD4+ T lymphocytes from hyper GD group were significantly more activated by TSHR peptides compared to eu GD, HT, IDDM, and N, and this induction correlated to their thyroid hormone levels.
776 7714099 Quite differently, the activation of CD8+ T lymphocytes from both hyper GD and eu GD group in response to TSHR peptides was impaired compared to HT, IDDM, and the N group; in contrast to the findings with CD4+ T lymphocytes, this was independent of thyroid hormone levels.
777 7714099 On the other hand, while the CD8+ T lymphocytes from GD and N groups were activated equally by GAD65, the activation of CD8+ T lymphocytes from the IDDM group by GAD65 was impaired compared to the GD and N groups.
778 7714099 In conclusion, the activation of CD8+ T lymphocytes from GD and IDDM by relevant antigens (i.e.
779 7714099 TSHR peptides for GD and GAD65 for IDDM) was impaired, but not by irrelevant antigens (i.e.
780 7714099 GAD65 for GD and TSHR peptides for IDDM).
781 7714099 There was also a modest stimulation of CD8+ T cells from all groups by tetanus toxoid and cardiac myosin light chain peptide, both irrelevant antigens.
782 7714099 Activation of T lymphocyte subsets by synthetic TSH receptor peptides and recombinant glutamate decarboxylase in autoimmune thyroid disease and insulin-dependent diabetes.
783 7714099 In this context, we have measured the proliferative responses of peripheral blood mononuclear cells (PBMC) to the synthetic peptides corresponding to the extracellular domain of the TSH receptor (TSHR) and recombinant glutamate decarboxylase (GAD65) by means of 3H thymidine incorporation.
784 7714099 We have also studied the antigenic activation of CD4+ and CD8+ T lymphocytes by measuring human leukocyte antigen-DR (HLA-DR) expression on the cell surface by flow cytometric analysis.
785 7714099 PBMC obtained from 47 patients with Graves' disease (GD) [including 19 hyperthyroid GD (hyper GD)], 18 with Hashimoto's thyroiditis (HT), 7 with nontoxic nodular goiter (NG), 18 with insulin-dependent diabetes (IDDM), and 20 normal controls (N), were cultured for 7 days in the presence or absence of the pool peptides representing 3 different segments of TSHR or GAD65 at final concentration of 30 micrograms/mL or 10 micrograms/mL.
786 7714099 The proportion of subjects whose PBMC gave a positive proliferative response with a stimulation index (SI) of over 2.3 (i.e. above the mean +2 SD for N) to TSHR peptides was significantly higher in the hyper GD group than among euthyroid GD (eu GD), HT, IDDM, and N group.
787 7714099 The CD4+ T lymphocytes from hyper GD group were significantly more activated by TSHR peptides compared to eu GD, HT, IDDM, and N, and this induction correlated to their thyroid hormone levels.
788 7714099 Quite differently, the activation of CD8+ T lymphocytes from both hyper GD and eu GD group in response to TSHR peptides was impaired compared to HT, IDDM, and the N group; in contrast to the findings with CD4+ T lymphocytes, this was independent of thyroid hormone levels.
789 7714099 On the other hand, while the CD8+ T lymphocytes from GD and N groups were activated equally by GAD65, the activation of CD8+ T lymphocytes from the IDDM group by GAD65 was impaired compared to the GD and N groups.
790 7714099 In conclusion, the activation of CD8+ T lymphocytes from GD and IDDM by relevant antigens (i.e.
791 7714099 TSHR peptides for GD and GAD65 for IDDM) was impaired, but not by irrelevant antigens (i.e.
792 7714099 GAD65 for GD and TSHR peptides for IDDM).
793 7714099 There was also a modest stimulation of CD8+ T cells from all groups by tetanus toxoid and cardiac myosin light chain peptide, both irrelevant antigens.
794 7714099 Activation of T lymphocyte subsets by synthetic TSH receptor peptides and recombinant glutamate decarboxylase in autoimmune thyroid disease and insulin-dependent diabetes.
795 7714099 In this context, we have measured the proliferative responses of peripheral blood mononuclear cells (PBMC) to the synthetic peptides corresponding to the extracellular domain of the TSH receptor (TSHR) and recombinant glutamate decarboxylase (GAD65) by means of 3H thymidine incorporation.
796 7714099 We have also studied the antigenic activation of CD4+ and CD8+ T lymphocytes by measuring human leukocyte antigen-DR (HLA-DR) expression on the cell surface by flow cytometric analysis.
797 7714099 PBMC obtained from 47 patients with Graves' disease (GD) [including 19 hyperthyroid GD (hyper GD)], 18 with Hashimoto's thyroiditis (HT), 7 with nontoxic nodular goiter (NG), 18 with insulin-dependent diabetes (IDDM), and 20 normal controls (N), were cultured for 7 days in the presence or absence of the pool peptides representing 3 different segments of TSHR or GAD65 at final concentration of 30 micrograms/mL or 10 micrograms/mL.
798 7714099 The proportion of subjects whose PBMC gave a positive proliferative response with a stimulation index (SI) of over 2.3 (i.e. above the mean +2 SD for N) to TSHR peptides was significantly higher in the hyper GD group than among euthyroid GD (eu GD), HT, IDDM, and N group.
799 7714099 The CD4+ T lymphocytes from hyper GD group were significantly more activated by TSHR peptides compared to eu GD, HT, IDDM, and N, and this induction correlated to their thyroid hormone levels.
800 7714099 Quite differently, the activation of CD8+ T lymphocytes from both hyper GD and eu GD group in response to TSHR peptides was impaired compared to HT, IDDM, and the N group; in contrast to the findings with CD4+ T lymphocytes, this was independent of thyroid hormone levels.
801 7714099 On the other hand, while the CD8+ T lymphocytes from GD and N groups were activated equally by GAD65, the activation of CD8+ T lymphocytes from the IDDM group by GAD65 was impaired compared to the GD and N groups.
802 7714099 In conclusion, the activation of CD8+ T lymphocytes from GD and IDDM by relevant antigens (i.e.
803 7714099 TSHR peptides for GD and GAD65 for IDDM) was impaired, but not by irrelevant antigens (i.e.
804 7714099 GAD65 for GD and TSHR peptides for IDDM).
805 7714099 There was also a modest stimulation of CD8+ T cells from all groups by tetanus toxoid and cardiac myosin light chain peptide, both irrelevant antigens.
806 7729614 The time required to transfer insulin-dependent diabetes mellitus (IDDM) using islet-infiltrating lymphocytes from young prediabetic mice (25 +/- 9 days) was not statistically different from the time required to transfer IDDM using splenocytes from overtly diabetic mice (32 +/- 5 days).
807 7729614 Cotransfer of splenocyte cells or CD4+, but not CD8+ spleen cells, from 60- to 80-day-old prediabetic female NOD mice together with either splenocytes from diabetic mice or islet-infiltrating lymphocytes from prediabetic NOD mice delayed the rapid transfer of IDDM, suggesting that CD4+ cells mediated immunoregulation.
808 7756046 Serum osteocalcin was found to be lower in patients who, according to the Centers for Disease Control (CDC) classification, had greater disease severity, and showed a positive correlation with the number of CD4+ T lymphocytes.
809 7790825 We report the isolation of a panel of CD4+ T helper type 1 autoreactive T cell clones from the spleen of unprimed nonobese diabetic mice, a murine model of human insulin-dependent diabetes mellitus.
810 7792922 Long-term dual treatment may be required to inactivate CD4+ and CD8+ T cells in the NOD/Lt mouse to prevent both autoimmune disease recurrence and rejection.
811 7798703 The number of lymphocytes and their subsets (CD3+, CD+, CD8+, 4/8 ratio, IL-2R+) did not significantly differ between the groups, but in GI patients, the number of OKIa1 positive lymphocytes were significantly lower than in GII the day before and 7 days after the operation.
812 7798703 IL-2 production in GII was significantly correlated to the number of CD4 positive lymphocytes, but this was not true in GI.
813 7813805 Accelerated beta-cell destruction in adoptively transferred autoimmune diabetes correlates with an increased expression of the genes coding for TNF-alpha and granzyme A in the intra-islet infiltrates.
814 7813805 Autoimmune destruction of beta-cells in nonobese diabetic (NOD) mice is greatly accelerated by adoptive cotransfer of syngeneic CD4+ and CD8+ T-cells from diabetic animals into newborn NOD mice.
815 7813805 We followed, by in situ hybridization, the appearance of mRNA of the tumor necrosis factor (TNF)-alpha gene and, as a marker for activated cytotoxic T-cells, of the serine protease granzyme A gene in the cellular infiltrates generated by cell transfer at birth.
816 7813805 Cells expressing the genes for granzyme A or TNF-alpha were seen in considerable numbers already on day 14, after adoptive transfer.
817 7813805 Compared with our previous findings in NOD mice developing spontaneous insulin-dependent diabetes mellitus (IDDM) (Held W, MacDonald HR, Weissman IL, Hess MW, Mueller C: Genes encoding tumor necrosis factor alpha and granzyme A are expressed during development of autoimmune diabetes.
818 7813805 Proc Natl Acad Sci USA 87:2239-2243, 1990), frequencies of cells with TNF-alpha and granzyme A mRNA were 2- and 12-fold higher, respectively, in transferred IDDM (trIDDM).
819 7813805 TNF-alpha mRNA positive cells were predominantly found in the CD4+ T-cell subset of the pancreas-infiltrating cells, whereas granzyme A mRNA positive cells were mainly observed in the CD4- T-cell subset.
820 7813805 Accelerated beta-cell destruction in adoptively transferred autoimmune diabetes correlates with an increased expression of the genes coding for TNF-alpha and granzyme A in the intra-islet infiltrates.
821 7813805 Autoimmune destruction of beta-cells in nonobese diabetic (NOD) mice is greatly accelerated by adoptive cotransfer of syngeneic CD4+ and CD8+ T-cells from diabetic animals into newborn NOD mice.
822 7813805 We followed, by in situ hybridization, the appearance of mRNA of the tumor necrosis factor (TNF)-alpha gene and, as a marker for activated cytotoxic T-cells, of the serine protease granzyme A gene in the cellular infiltrates generated by cell transfer at birth.
823 7813805 Cells expressing the genes for granzyme A or TNF-alpha were seen in considerable numbers already on day 14, after adoptive transfer.
824 7813805 Compared with our previous findings in NOD mice developing spontaneous insulin-dependent diabetes mellitus (IDDM) (Held W, MacDonald HR, Weissman IL, Hess MW, Mueller C: Genes encoding tumor necrosis factor alpha and granzyme A are expressed during development of autoimmune diabetes.
825 7813805 Proc Natl Acad Sci USA 87:2239-2243, 1990), frequencies of cells with TNF-alpha and granzyme A mRNA were 2- and 12-fold higher, respectively, in transferred IDDM (trIDDM).
826 7813805 TNF-alpha mRNA positive cells were predominantly found in the CD4+ T-cell subset of the pancreas-infiltrating cells, whereas granzyme A mRNA positive cells were mainly observed in the CD4- T-cell subset.
827 7819154 beta 2-Microglobulin (beta 2m)-deficient non-obese diabetic (NOD) mice were established by crossing beta 2m-deficient 129/Sv mice with NOD mice, and used to examine the possible involvement of MHC class I molecules and CD8+ T cells in the development of insulitis and diabetes.
828 7819154 These findings support the notion that the expression of MHC class I molecules and/or CD8+ T cells plays an essential role in the infiltration of CD4+ T cells in islets as well as the development of diabetes in NOD mice.
829 7834277 Improved risk assessment for insulin-dependent diabetes mellitus by analysis of amino acids in HLA-DQ and DRB1 loci.
830 7834277 Polymorphisms in HLA class II genes have been shown to contribute to susceptibility or protection against insulin-dependent diabetes mellitus (IDDM).
831 7834277 In the present study the role of HLA class II haplotypes and the role of DQ alpha Arg52, DQ beta Asp57 and of polymorphic amino acids, located in the antigen-binding groove and the CD4-binding domain of the DR beta 1 chain, were studied in 210 unrelated Caucasian IDDM patients and 205 controls.
832 7834277 Our findings confirm that protection against IDDM is provided by HLA-DQ loci but that susceptibility for IDDM is provided by both HLA-DRB1 and DQB1 loci.
833 7835983 The precise role of immune cells in beta cell killing and their manner of invasion of pancreatic islets in insulin-dependent diabetes mellitus (IDDM) are unclear.
834 7835983 Immunohistochemical analysis showed that the islet engrafted cells were of CD4 and CD8 phenotype.
835 7836934 T cells play a major role in the development of insulin-dependent diabetes mellitus (IDDM) in nonobese diabetic (NOD) mice.
836 7836934 Administration of interleukin 12 (IL-12), a key cytokine which guides the development of T helper type 1 (Th1) CD4+ T cells, induces rapid onset of IDDM in NOD, but not in BALB/c mice.
837 7836934 CD4+ pancreas-infiltrating T cells, after activation by insolubilized anti T cell receptor antibody, secrete high levels of interferon gamma and low levels of IL-4.
838 7836934 Therefore, IL-12 administration accelerates IDDM development in genetically susceptible NOD mice, and this correlates with increased Th1 cytokine production by islet-infiltrating cells.
839 7836934 T cells play a major role in the development of insulin-dependent diabetes mellitus (IDDM) in nonobese diabetic (NOD) mice.
840 7836934 Administration of interleukin 12 (IL-12), a key cytokine which guides the development of T helper type 1 (Th1) CD4+ T cells, induces rapid onset of IDDM in NOD, but not in BALB/c mice.
841 7836934 CD4+ pancreas-infiltrating T cells, after activation by insolubilized anti T cell receptor antibody, secrete high levels of interferon gamma and low levels of IL-4.
842 7836934 Therefore, IL-12 administration accelerates IDDM development in genetically susceptible NOD mice, and this correlates with increased Th1 cytokine production by islet-infiltrating cells.
843 7840857 Oral administration of human insulin to NOD mice generates CD4+ T cells that suppress adoptive transfer of diabetes.
844 7840857 When T cell subsets from insulin-fed animals were co-injected with diabetogenic T cells, only purified CD4+ T cells were able to transfer protection since only 3/12 mice became diabetic after 36 days in comparison to 3/6 in the group co-injected with CD4+ T cells from PBS-fed animals, or 5/6 in the group injected with CD8+ T cells.
845 7840857 Oral administration of human insulin to NOD mice generates CD4+ T cells that suppress adoptive transfer of diabetes.
846 7840857 When T cell subsets from insulin-fed animals were co-injected with diabetogenic T cells, only purified CD4+ T cells were able to transfer protection since only 3/12 mice became diabetic after 36 days in comparison to 3/6 in the group co-injected with CD4+ T cells from PBS-fed animals, or 5/6 in the group injected with CD8+ T cells.
847 7860729 The participation of IL-2 in insulin-dependent (type 1) diabetes (IDDM) was analyzed in transgenic (tg) mice expressing the nucleoprotein (NP) of lymphocytic choriomeningitis virus and IL-2 under control of the rat insulin promoter focally in beta cells of the islets of Langerhans.
848 7860729 Insertion and expression of the viral (self) gene or of the IL-2 gene alone did not lead to IDDM.
849 7860729 Infiltration primarily of CD4 and B lymphocytes and increased expression of MHC class I and II molecules occurred in islets where IL-2 was expressed.
850 7860729 In contrast, viral inoculum to single tg mice expressing either the viral protein or IL-2 failed to enhance the incidence of IDDM over 30% for viral protein or 10% for IL-2 after an 8-mo observation period.
851 7860747 Insulin immunization of nonobese diabetic mice induces a protective insulitis characterized by diminished intraislet interferon-gamma transcription.
852 7860747 Adoptive transfer of splenocytes from B-chain insulin-immunized mice prevented diabetes in recipients co-infused with diabetogenic spleen cells, an effect that was abolished by prior in vivo elimination of either CD4+ or CD8+ cells.
853 7860747 Insulin immunization did not reduce the extent of intraislet inflammation (insulitis); however, it did abolish expression of IFN-gamma mRNA within the insulitis lesions.
854 7865456 To examine the role of IL-2 in the regulation of peripheral tolerance we produced transgenic mice in which the expression of murine IL-2 was directed by the rat insulin II promoter.
855 7865456 The infiltrate consisted primarily of B cells and CD4+ and CD8+ T cells.
856 7868915 Beta-cell-cytotoxic CD8+ T cells from nonobese diabetic mice use highly homologous T cell receptor alpha-chain CDR3 sequences.
857 7868915 Insulin-dependent diabetes mellitus (IDDM) in nonobese diabetic (NOD) mice results from a cell-mediated autoimmune process against pancreatic beta-cells.
858 7868915 We have shown that beta-cell-cytotoxic CD8+ T cell clones can transfer IDDM to irradiated NOD mice if co-injected with nondiabetogenic CD4+ spleen T cells.
859 7868915 To determine whether CTLs recruited to pancreatic islets recognize a restricted set of local Ags, we sequenced TCR-alpha and TCR-beta cDNA generated by anchor PCR from CD8+ CTL lines and clones derived from islets of 10 different NOD mice.
860 7868915 By contrast, none of 31 different TCR-alpha rearrangements used by CD8+ spleen T cells encoded motifs 1 or 2, and only one encoded motif 3.
861 7868915 Skewed TCR-alpha-CDR3 usage by islet-derived CTLs was substantiated further by isolation of CTL clones transcribing highly homologous TCR-alpha, but different TCR-beta, rearrangements.
862 7888038 Adoptive transfer of autoimmune diabetes mellitus to athymic rats: synergy of CD4+ and CD8+ T cells and prevention by RT6+ T cells.
863 7888038 We describe the induction and prevention of autoimmune insulin dependent diabetes mellitus (IDDM), and its pathological substrate, insulitis, in congenitally athymic nude rats following injections of major histocompatibility complex (MHC) compatible lymph node T cells.
864 7888038 It was also observed that both CD4+ and CD8+ T cells are required for efficient transfer of autoimmunity.
865 7888038 The data indicate that, as in the NOD mouse, a synergistic interaction between CD4+ and CD8+ T cells is important for beta cell destruction.
866 7888038 Adoptive transfer of autoimmune diabetes mellitus to athymic rats: synergy of CD4+ and CD8+ T cells and prevention by RT6+ T cells.
867 7888038 We describe the induction and prevention of autoimmune insulin dependent diabetes mellitus (IDDM), and its pathological substrate, insulitis, in congenitally athymic nude rats following injections of major histocompatibility complex (MHC) compatible lymph node T cells.
868 7888038 It was also observed that both CD4+ and CD8+ T cells are required for efficient transfer of autoimmunity.
869 7888038 The data indicate that, as in the NOD mouse, a synergistic interaction between CD4+ and CD8+ T cells is important for beta cell destruction.
870 7888038 Adoptive transfer of autoimmune diabetes mellitus to athymic rats: synergy of CD4+ and CD8+ T cells and prevention by RT6+ T cells.
871 7888038 We describe the induction and prevention of autoimmune insulin dependent diabetes mellitus (IDDM), and its pathological substrate, insulitis, in congenitally athymic nude rats following injections of major histocompatibility complex (MHC) compatible lymph node T cells.
872 7888038 It was also observed that both CD4+ and CD8+ T cells are required for efficient transfer of autoimmunity.
873 7888038 The data indicate that, as in the NOD mouse, a synergistic interaction between CD4+ and CD8+ T cells is important for beta cell destruction.
874 7889411 We developed two distinct transgenic mouse models in which virus induced insulin-dependent (type 1) diabetes mellitus (IDDM).
875 7889411 By contrast, induction of an anti-self (anti-viral) CD8+ CTL response to the same virus later in life caused IDDM (incidence < 90%) in both transgenic lines, although the kinetics and requirements for CD4 help, the affinity and avidity of CD8+ CTL differed in each line.
876 7889411 CD4+ T cells played no detectable role, since their depletion failed to alter either the kinetics or incidence of IDDM.
877 7889411 Disease was dependent on T cell help, since deletion of CD4+ cells completely circumvented the IDDM.
878 7889411 We developed two distinct transgenic mouse models in which virus induced insulin-dependent (type 1) diabetes mellitus (IDDM).
879 7889411 By contrast, induction of an anti-self (anti-viral) CD8+ CTL response to the same virus later in life caused IDDM (incidence < 90%) in both transgenic lines, although the kinetics and requirements for CD4 help, the affinity and avidity of CD8+ CTL differed in each line.
880 7889411 CD4+ T cells played no detectable role, since their depletion failed to alter either the kinetics or incidence of IDDM.
881 7889411 Disease was dependent on T cell help, since deletion of CD4+ cells completely circumvented the IDDM.
882 7889411 We developed two distinct transgenic mouse models in which virus induced insulin-dependent (type 1) diabetes mellitus (IDDM).
883 7889411 By contrast, induction of an anti-self (anti-viral) CD8+ CTL response to the same virus later in life caused IDDM (incidence < 90%) in both transgenic lines, although the kinetics and requirements for CD4 help, the affinity and avidity of CD8+ CTL differed in each line.
884 7889411 CD4+ T cells played no detectable role, since their depletion failed to alter either the kinetics or incidence of IDDM.
885 7889411 Disease was dependent on T cell help, since deletion of CD4+ cells completely circumvented the IDDM.
886 7902104 T-cell-T-cell collaboration in allogeneic responses traditionally has been viewed as the requirement for CD4+ T helper cells in the activation of CD8+ cytotoxic T cells.
887 7902104 In this regard, the role of the CD4+ T cell is primarily to provide growth factors, such as interleukin-2, on which the CD8+ T cell is dependent.
888 7902104 T-cell-T-cell collaboration in allogeneic responses traditionally has been viewed as the requirement for CD4+ T helper cells in the activation of CD8+ cytotoxic T cells.
889 7902104 In this regard, the role of the CD4+ T cell is primarily to provide growth factors, such as interleukin-2, on which the CD8+ T cell is dependent.
890 7907110 However, transfer of these clones, together with CD4(+)-rich NOD splenocytes depleted of CD8+ T cells, caused severe insulitis and diabetes.
891 7909401 The circulating autoantibodies to enterocytes in her serum were detected by indirect immunofluorescence technique and the impaired suppressor T (Ts) cell function was proved by plaque forming assay using bead-separated CD4 or CD8 T cells together with CD19 B cells.
892 7909401 The helper functions of adult CD4 T cells to induce Ig-secreting cells from adult and the patient were strikingly suppressed by adult CD8 T cells.
893 7909401 However, the CD8 T cells from the patient lost the ability to inhibit the induction of these Ig-secreting cells when stimulated with adult CD4 T cells.
894 7909401 Moreover, the patient's CD8 T cells stimulated rather than suppressed the induction of Ig-secreting cells from the patient when stimulated with the patient's CD4 T cells.
895 7909401 The circulating autoantibodies to enterocytes in her serum were detected by indirect immunofluorescence technique and the impaired suppressor T (Ts) cell function was proved by plaque forming assay using bead-separated CD4 or CD8 T cells together with CD19 B cells.
896 7909401 The helper functions of adult CD4 T cells to induce Ig-secreting cells from adult and the patient were strikingly suppressed by adult CD8 T cells.
897 7909401 However, the CD8 T cells from the patient lost the ability to inhibit the induction of these Ig-secreting cells when stimulated with adult CD4 T cells.
898 7909401 Moreover, the patient's CD8 T cells stimulated rather than suppressed the induction of Ig-secreting cells from the patient when stimulated with the patient's CD4 T cells.
899 7909401 The circulating autoantibodies to enterocytes in her serum were detected by indirect immunofluorescence technique and the impaired suppressor T (Ts) cell function was proved by plaque forming assay using bead-separated CD4 or CD8 T cells together with CD19 B cells.
900 7909401 The helper functions of adult CD4 T cells to induce Ig-secreting cells from adult and the patient were strikingly suppressed by adult CD8 T cells.
901 7909401 However, the CD8 T cells from the patient lost the ability to inhibit the induction of these Ig-secreting cells when stimulated with adult CD4 T cells.
902 7909401 Moreover, the patient's CD8 T cells stimulated rather than suppressed the induction of Ig-secreting cells from the patient when stimulated with the patient's CD4 T cells.
903 7909401 The circulating autoantibodies to enterocytes in her serum were detected by indirect immunofluorescence technique and the impaired suppressor T (Ts) cell function was proved by plaque forming assay using bead-separated CD4 or CD8 T cells together with CD19 B cells.
904 7909401 The helper functions of adult CD4 T cells to induce Ig-secreting cells from adult and the patient were strikingly suppressed by adult CD8 T cells.
905 7909401 However, the CD8 T cells from the patient lost the ability to inhibit the induction of these Ig-secreting cells when stimulated with adult CD4 T cells.
906 7909401 Moreover, the patient's CD8 T cells stimulated rather than suppressed the induction of Ig-secreting cells from the patient when stimulated with the patient's CD4 T cells.
907 7925581 The accelerating effect of IL-2 was present; but decreased, in NOD mice that lacked CD8+ T cells as well as in NOD SCID mice.
908 7925581 The implications are that in the NOD genetic background, the production of cytokines, such as IL-2, by islet-specific CD4+ T cells can lead to beta cell damage and diabetes and that CD8+ T cells may have a role in accelerating diabetes onset.
909 7930594 Flow cytometric analysis showed that BNY-2 cells were positive for CD4 and CD5 and were negative for CD8 and RT6, indicating that these cells were phenotypically Th cells rather than cytotoxic T cells. mAbs against rat MHC class II Ags (anti-RT1.D) blocked the proliferation response of BNY-2 cells, suggesting that these cells recognize the MHC class II Du molecule.
910 7934613 Both CD4 and CD8 T cells as well as macrophages are required for the development of diabetes in NOD mice.
911 8018595 Analysis of the T cells present in the pancreatic infiltrates of single-copy and homozygous rat insulin promoter IL-2 mice showed a predominance of CD4+ cells which was especially apparent in the very young mice.
912 8024653 Because of anatomical limitations, molecular characterization of islet-inflammatory T-cells in human insulin-dependent diabetes mellitus (IDDM) has remained elusive.
913 8024653 Most of the in vivo-activated isletitis T-cells were CD8+TcR alpha beta+ and CD4-CD8-TcR gamma delta+ in both patients.
914 8025213 Generally, there was an increase in the CD4:CD8 ratio in the peripheral lymphoid organs during the onset of insulitis which was largely due to an increase in the CD4 T cell population while the ratio decreased after the onset of diabetes.
915 8025212 From 3 patients with newly-diagnosed Type 1 diabetes 184 clones were generated, the majority of which (39%) were CD4+TCR alpha beta+, whilst 31% were CD8+TCR alpha beta+.
916 8025212 From 2 healthy control subjects 90 clones were obtained, of which 62% were CD4+TCR alpha beta+ and 33% were CD8+TCR alpha beta+.
917 8025212 From 3 patients with newly-diagnosed Type 1 diabetes 184 clones were generated, the majority of which (39%) were CD4+TCR alpha beta+, whilst 31% were CD8+TCR alpha beta+.
918 8025212 From 2 healthy control subjects 90 clones were obtained, of which 62% were CD4+TCR alpha beta+ and 33% were CD8+TCR alpha beta+.
919 8030746 Interleukin-6 (IL-6) is thought to be involved in the pathogenesis of autoimmune insulin-dependent diabetes mellitus.
920 8030746 In older RIP-IL6 mice, a more florid insulitis was observed which was composed predominantly of B220+ B lymphocytes and, to a lesser extent, Mac-1+ macrophages and CD4+ and CD8+ T lymphocytes.
921 8033411 After administration of CsA to newborn NOD mice, there was a reduction (P < 0.01) of both CD4+CD8- and CD4-CD8+ thymocytes, whereas the number of double positive CD4+CD8+ thymocytes was increased.
922 8033411 Both CD4+ and CD8+ spleen T cells were depleted.
923 8033411 After administration of CsA to newborn NOD mice, there was a reduction (P < 0.01) of both CD4+CD8- and CD4-CD8+ thymocytes, whereas the number of double positive CD4+CD8+ thymocytes was increased.
924 8033411 Both CD4+ and CD8+ spleen T cells were depleted.
925 8056185 In IDDM, IL-2 production by CD4-positive T lymphocytes within the IL-2 system is thought to be selectively defective.
926 8056185 On the other hand, IL-4, which is also produced by CD4-positive T lymphocytes, was increased.
927 8056185 Since IL-4 did not suppress IL-2 production, it would seem that the IL-2 producing subset in CD4+HLA-DR+ T cells is decreased in IDDM.
928 8056185 These results suggest that in recent onset IDDM, IL-2 receptor-positive circulating T cells require an IL-2 supply.
929 8056185 In IDDM, IL-2 production by CD4-positive T lymphocytes within the IL-2 system is thought to be selectively defective.
930 8056185 On the other hand, IL-4, which is also produced by CD4-positive T lymphocytes, was increased.
931 8056185 Since IL-4 did not suppress IL-2 production, it would seem that the IL-2 producing subset in CD4+HLA-DR+ T cells is decreased in IDDM.
932 8056185 These results suggest that in recent onset IDDM, IL-2 receptor-positive circulating T cells require an IL-2 supply.
933 8056185 In IDDM, IL-2 production by CD4-positive T lymphocytes within the IL-2 system is thought to be selectively defective.
934 8056185 On the other hand, IL-4, which is also produced by CD4-positive T lymphocytes, was increased.
935 8056185 Since IL-4 did not suppress IL-2 production, it would seem that the IL-2 producing subset in CD4+HLA-DR+ T cells is decreased in IDDM.
936 8056185 These results suggest that in recent onset IDDM, IL-2 receptor-positive circulating T cells require an IL-2 supply.
937 8082309 Possible association of CD3 and CD4 polymorphisms with insulin-dependent diabetes mellitus (IDDM).
938 8082309 In the present study the association of polymorphisms in the CD4 and the delta subunit of CD3 with IDDM were examined in a Belgian population.
939 8082309 These results therefore suggest that CD4, CD3 or neighbouring genes might contribute to IDDM susceptibility.
940 8082309 Possible association of CD3 and CD4 polymorphisms with insulin-dependent diabetes mellitus (IDDM).
941 8082309 In the present study the association of polymorphisms in the CD4 and the delta subunit of CD3 with IDDM were examined in a Belgian population.
942 8082309 These results therefore suggest that CD4, CD3 or neighbouring genes might contribute to IDDM susceptibility.
943 8082309 Possible association of CD3 and CD4 polymorphisms with insulin-dependent diabetes mellitus (IDDM).
944 8082309 In the present study the association of polymorphisms in the CD4 and the delta subunit of CD3 with IDDM were examined in a Belgian population.
945 8082309 These results therefore suggest that CD4, CD3 or neighbouring genes might contribute to IDDM susceptibility.
946 8093606 Relative contributions of CD4+ and CD8+ T-cells from diabetic versus prediabetic NOD.NON-Thy-1a donors.
947 8093606 Precise definition of the role of both CD4 and CD8 T-cell subsets from NOD mice in the adoptive transfer of diabetes has been complicated by the possibility that endogenous T-cells may be recruited.
948 8093606 However, the mean time to diabetes onset was doubled when CD4+ lymphocytes were isolated from prediabetic versus diabetic donors, and these transfers were complicated by the generation of small but significant numbers of CD8+ cells over time.
949 8093606 More rigorous exclusion of CD8+ cells by means of anti-CD8 MoAb treatment in vivo of the recipients of enriched CD4+ cells demonstrated a significant difference in the diabetogenic potency of CD4+ lymphocytes from diabetic versus nondiabetic donors.
950 8093606 Evidence is discussed indicating that the age-associated differences in ability of CD4+ T-cells to adoptively transfer diabetes in the absence of the CD8+ T-cells subset is a function of prior, chronic exposure of the CD4+ lymphocytes to beta-cell antigens in the donor.
951 8093606 Relative contributions of CD4+ and CD8+ T-cells from diabetic versus prediabetic NOD.NON-Thy-1a donors.
952 8093606 Precise definition of the role of both CD4 and CD8 T-cell subsets from NOD mice in the adoptive transfer of diabetes has been complicated by the possibility that endogenous T-cells may be recruited.
953 8093606 However, the mean time to diabetes onset was doubled when CD4+ lymphocytes were isolated from prediabetic versus diabetic donors, and these transfers were complicated by the generation of small but significant numbers of CD8+ cells over time.
954 8093606 More rigorous exclusion of CD8+ cells by means of anti-CD8 MoAb treatment in vivo of the recipients of enriched CD4+ cells demonstrated a significant difference in the diabetogenic potency of CD4+ lymphocytes from diabetic versus nondiabetic donors.
955 8093606 Evidence is discussed indicating that the age-associated differences in ability of CD4+ T-cells to adoptively transfer diabetes in the absence of the CD8+ T-cells subset is a function of prior, chronic exposure of the CD4+ lymphocytes to beta-cell antigens in the donor.
956 8093606 Relative contributions of CD4+ and CD8+ T-cells from diabetic versus prediabetic NOD.NON-Thy-1a donors.
957 8093606 Precise definition of the role of both CD4 and CD8 T-cell subsets from NOD mice in the adoptive transfer of diabetes has been complicated by the possibility that endogenous T-cells may be recruited.
958 8093606 However, the mean time to diabetes onset was doubled when CD4+ lymphocytes were isolated from prediabetic versus diabetic donors, and these transfers were complicated by the generation of small but significant numbers of CD8+ cells over time.
959 8093606 More rigorous exclusion of CD8+ cells by means of anti-CD8 MoAb treatment in vivo of the recipients of enriched CD4+ cells demonstrated a significant difference in the diabetogenic potency of CD4+ lymphocytes from diabetic versus nondiabetic donors.
960 8093606 Evidence is discussed indicating that the age-associated differences in ability of CD4+ T-cells to adoptively transfer diabetes in the absence of the CD8+ T-cells subset is a function of prior, chronic exposure of the CD4+ lymphocytes to beta-cell antigens in the donor.
961 8093606 Relative contributions of CD4+ and CD8+ T-cells from diabetic versus prediabetic NOD.NON-Thy-1a donors.
962 8093606 Precise definition of the role of both CD4 and CD8 T-cell subsets from NOD mice in the adoptive transfer of diabetes has been complicated by the possibility that endogenous T-cells may be recruited.
963 8093606 However, the mean time to diabetes onset was doubled when CD4+ lymphocytes were isolated from prediabetic versus diabetic donors, and these transfers were complicated by the generation of small but significant numbers of CD8+ cells over time.
964 8093606 More rigorous exclusion of CD8+ cells by means of anti-CD8 MoAb treatment in vivo of the recipients of enriched CD4+ cells demonstrated a significant difference in the diabetogenic potency of CD4+ lymphocytes from diabetic versus nondiabetic donors.
965 8093606 Evidence is discussed indicating that the age-associated differences in ability of CD4+ T-cells to adoptively transfer diabetes in the absence of the CD8+ T-cells subset is a function of prior, chronic exposure of the CD4+ lymphocytes to beta-cell antigens in the donor.
966 8093606 Relative contributions of CD4+ and CD8+ T-cells from diabetic versus prediabetic NOD.NON-Thy-1a donors.
967 8093606 Precise definition of the role of both CD4 and CD8 T-cell subsets from NOD mice in the adoptive transfer of diabetes has been complicated by the possibility that endogenous T-cells may be recruited.
968 8093606 However, the mean time to diabetes onset was doubled when CD4+ lymphocytes were isolated from prediabetic versus diabetic donors, and these transfers were complicated by the generation of small but significant numbers of CD8+ cells over time.
969 8093606 More rigorous exclusion of CD8+ cells by means of anti-CD8 MoAb treatment in vivo of the recipients of enriched CD4+ cells demonstrated a significant difference in the diabetogenic potency of CD4+ lymphocytes from diabetic versus nondiabetic donors.
970 8093606 Evidence is discussed indicating that the age-associated differences in ability of CD4+ T-cells to adoptively transfer diabetes in the absence of the CD8+ T-cells subset is a function of prior, chronic exposure of the CD4+ lymphocytes to beta-cell antigens in the donor.
971 8094734 Diabetes in these lymphopoenic rats was associated with extensive insulitis involving CD4+ and CD8+ T cells and macrophages.
972 8094734 The autoimmune diabetes and insulitis were completely prevented by the injection of a particular CD4+ T cell subset, isolated from healthy syngeneic donors, of the phenotype CD45RClow T cell receptor alpha/beta+ RT6+ Thy-1- OX-40-.
973 8094734 Cells of this protective phenotype, which make up about 5% of thoracic duct lymphocytes, were found to provide help for secondary antibody responses and produce interleukin 2 (IL-2) and IL-4, but no interferon gamma, on in vitro activation.
974 8094734 Diabetes in these lymphopoenic rats was associated with extensive insulitis involving CD4+ and CD8+ T cells and macrophages.
975 8094734 The autoimmune diabetes and insulitis were completely prevented by the injection of a particular CD4+ T cell subset, isolated from healthy syngeneic donors, of the phenotype CD45RClow T cell receptor alpha/beta+ RT6+ Thy-1- OX-40-.
976 8094734 Cells of this protective phenotype, which make up about 5% of thoracic duct lymphocytes, were found to provide help for secondary antibody responses and produce interleukin 2 (IL-2) and IL-4, but no interferon gamma, on in vitro activation.
977 8095459 This population, composed of CD4+ and CD8+ T cells, is presumably committed against the relevant beta cell antigens and is the most likely to reveal a bias in V gene usage if such a bias does indeed exist.
978 8095459 In contrast, the depletion of V beta 6-positive T cells results in a severe reduction of transfers, suggesting that V beta 6 gene is used with a relatively high frequency by diabetogenic CD4+ and/or CD8+ T cells.
979 8095459 This population, composed of CD4+ and CD8+ T cells, is presumably committed against the relevant beta cell antigens and is the most likely to reveal a bias in V gene usage if such a bias does indeed exist.
980 8095459 In contrast, the depletion of V beta 6-positive T cells results in a severe reduction of transfers, suggesting that V beta 6 gene is used with a relatively high frequency by diabetogenic CD4+ and/or CD8+ T cells.
981 8096128 A suppressor mechanism involving CD8+ T cells might be involved since in vitro these cells strongly proliferated in response to irradiated CD4+ V beta 8+ T cells that in blocking experiments with specific mAb was found to be class I major histocompatibility complex (MHC)-restricted.
982 8096128 Hence, T cells expressing the CD8 phenotype specifically respond to idiotypic or ergotypic determinants on the inducing activated CD4+V beta 8+ T cells and effectively suppress a diabetogenic disease process by a mechanism that may involve T-T cell interactions.
983 8096128 A suppressor mechanism involving CD8+ T cells might be involved since in vitro these cells strongly proliferated in response to irradiated CD4+ V beta 8+ T cells that in blocking experiments with specific mAb was found to be class I major histocompatibility complex (MHC)-restricted.
984 8096128 Hence, T cells expressing the CD8 phenotype specifically respond to idiotypic or ergotypic determinants on the inducing activated CD4+V beta 8+ T cells and effectively suppress a diabetogenic disease process by a mechanism that may involve T-T cell interactions.
985 8098501 Administration of morphine significantly inhibited the phorbol myristate acetate (PMA)-stimulated increase in interleukin-2 receptor (IL-2R) expression in both CD4+ and CD8+ mouse T cells.
986 8098501 In contrast, morphine treatment had no effect on PMA/calcium ionophore (A23187)-induced increase in IL-2 secretion, suggesting a selective inhibition of IL-2R expression.
987 8098501 Moreover, adrenalectomy abolished this effect of morphine in CD4+ but not CD8+ T cells, suggesting that the inhibitory effect of morphine on IL-2R expression in CD4+ T cells may be mediated through a morphine-induced increase in corticosteroid levels.
988 8098501 Administration of morphine significantly inhibited the phorbol myristate acetate (PMA)-stimulated increase in interleukin-2 receptor (IL-2R) expression in both CD4+ and CD8+ mouse T cells.
989 8098501 In contrast, morphine treatment had no effect on PMA/calcium ionophore (A23187)-induced increase in IL-2 secretion, suggesting a selective inhibition of IL-2R expression.
990 8098501 Moreover, adrenalectomy abolished this effect of morphine in CD4+ but not CD8+ T cells, suggesting that the inhibitory effect of morphine on IL-2R expression in CD4+ T cells may be mediated through a morphine-induced increase in corticosteroid levels.
991 8098666 To analyze of the roles of CD4+ and CD8+ T cells in the pathogenesis of this mouse, we have been doing a series of studies on the induction of insulitis and diabetes in NOD athymic nude mice by means of T cell transfer.
992 8098666 On the other hand, transfer of either CD4+ cell-depleted or CD8+ cell-depleted splenic lymphocytes of diabetic mice did not cause diabetes at least up to 60 days after the cell transfer.
993 8098666 However, insulitis was less potent in this group of mice than in the diabetic recipients given both subsets: only a low insulitis score was obtained and a number of beta-cells remained alive despite the insulitis in mice given the CD8+ T cell-depleted fraction, whereas islet damage was very severe and insulin-secreting beta-cells were no longer detected in the diabetic mice.
994 8098666 Consideration of our results together with earlier findings led to the conclusion that CD4+ T cells are primarily responsible for insulitis and that CD8+ T cells migrate into islets and are differentiated into mature killer cells against beta-cells with the aid of CD4+ T cells in both spontaneous and cyclophosphamide-induced diabetes.
995 8098666 To analyze of the roles of CD4+ and CD8+ T cells in the pathogenesis of this mouse, we have been doing a series of studies on the induction of insulitis and diabetes in NOD athymic nude mice by means of T cell transfer.
996 8098666 On the other hand, transfer of either CD4+ cell-depleted or CD8+ cell-depleted splenic lymphocytes of diabetic mice did not cause diabetes at least up to 60 days after the cell transfer.
997 8098666 However, insulitis was less potent in this group of mice than in the diabetic recipients given both subsets: only a low insulitis score was obtained and a number of beta-cells remained alive despite the insulitis in mice given the CD8+ T cell-depleted fraction, whereas islet damage was very severe and insulin-secreting beta-cells were no longer detected in the diabetic mice.
998 8098666 Consideration of our results together with earlier findings led to the conclusion that CD4+ T cells are primarily responsible for insulitis and that CD8+ T cells migrate into islets and are differentiated into mature killer cells against beta-cells with the aid of CD4+ T cells in both spontaneous and cyclophosphamide-induced diabetes.
999 8098666 To analyze of the roles of CD4+ and CD8+ T cells in the pathogenesis of this mouse, we have been doing a series of studies on the induction of insulitis and diabetes in NOD athymic nude mice by means of T cell transfer.
1000 8098666 On the other hand, transfer of either CD4+ cell-depleted or CD8+ cell-depleted splenic lymphocytes of diabetic mice did not cause diabetes at least up to 60 days after the cell transfer.
1001 8098666 However, insulitis was less potent in this group of mice than in the diabetic recipients given both subsets: only a low insulitis score was obtained and a number of beta-cells remained alive despite the insulitis in mice given the CD8+ T cell-depleted fraction, whereas islet damage was very severe and insulin-secreting beta-cells were no longer detected in the diabetic mice.
1002 8098666 Consideration of our results together with earlier findings led to the conclusion that CD4+ T cells are primarily responsible for insulitis and that CD8+ T cells migrate into islets and are differentiated into mature killer cells against beta-cells with the aid of CD4+ T cells in both spontaneous and cyclophosphamide-induced diabetes.
1003 8100268 A scattered infiltration of macrophages (M pi) precedes localized accumulations of CD4+ and CD8+ T lymphocytes, B lymphocytes, and M pi.
1004 8100268 The endothelium lining small vessels was highly activated in areas of inflammation, as the endothelial cells became cuboidal, and exhibited increased expression of major histocompatibility complex class II (Ia), intercellular adhesion molecule 1, and von Willebrand Factor.
1005 8101546 Presentation of beta-cell antigens to CD4+ and CD8+ T cells of non-obese diabetic mice.
1006 8101546 We isolated CD4+ and CD8+ T cell clones from pancreatic islets of non-obese diabetic (NOD) mice and studied their interactions with pancreatic islets, in culture.
1007 8101546 The two CD8+ T cell clones proliferated and released IFN-gamma upon reaction with islet cells from either NOD or BALB/c but not B6 mice.
1008 8101546 For optimal transfer of disease, the CD4+ T cell clones had to be co-injected with CD8+ T cells from NOD diabetic mice.
1009 8101546 Presentation of beta-cell antigens to CD4+ and CD8+ T cells of non-obese diabetic mice.
1010 8101546 We isolated CD4+ and CD8+ T cell clones from pancreatic islets of non-obese diabetic (NOD) mice and studied their interactions with pancreatic islets, in culture.
1011 8101546 The two CD8+ T cell clones proliferated and released IFN-gamma upon reaction with islet cells from either NOD or BALB/c but not B6 mice.
1012 8101546 For optimal transfer of disease, the CD4+ T cell clones had to be co-injected with CD8+ T cells from NOD diabetic mice.
1013 8101546 Presentation of beta-cell antigens to CD4+ and CD8+ T cells of non-obese diabetic mice.
1014 8101546 We isolated CD4+ and CD8+ T cell clones from pancreatic islets of non-obese diabetic (NOD) mice and studied their interactions with pancreatic islets, in culture.
1015 8101546 The two CD8+ T cell clones proliferated and released IFN-gamma upon reaction with islet cells from either NOD or BALB/c but not B6 mice.
1016 8101546 For optimal transfer of disease, the CD4+ T cell clones had to be co-injected with CD8+ T cells from NOD diabetic mice.
1017 8101862 Insulin-dependent diabetes mellitus (IDDM) is an autoimmune disease marked by hyperglycemia and mononuclear cell infiltration of insulin-producing beta islet cells.
1018 8101862 Predisposition to IDDM in humans has been linked to the class II major histocompatibility complex (MHC), and islet cells often become aberrantly class II positive during the course of the disease.
1019 8101862 These results suggest that in this model of autoimmune diabetes, CD4+ T cells and MHC class II molecules are not required for the development of disease.
1020 8102088 Progressive disease was found to be associated with the presence in the serum of IgA, IgE, and IgG1 Candida-reactive specific antibodies, absent footpad reactions, and elevated production in vitro of the Th2 cytokines IL-4, IL-6, and IL-10 but not the Th1 cytokine IFN-gamma.
1021 8102088 Both the Th2 and Th1 (IL-2 and IFN-gamma) cytokines were produced in vitro by CD4+ lymphocytes from noninfected diabetic mice that, in addition, showed a noticeable footpad reaction to Candida antigens.
1022 8105789 Three were CD8+ and five CD4+.
1023 8105789 The results indicate that practically all the lines (11 out of 12), irrespective of their CD4/CD8 phenotype or V beta expression, can exert cell-mediated cytotoxicity when their TCR/CD3 complex is linked to a target cell.
1024 8105789 Three were CD8+ and five CD4+.
1025 8105789 The results indicate that practically all the lines (11 out of 12), irrespective of their CD4/CD8 phenotype or V beta expression, can exert cell-mediated cytotoxicity when their TCR/CD3 complex is linked to a target cell.
1026 8105989 Results indicate that 1) cytokine mRNA profiles exhibited by islet-infiltrating cells of female and male NOD mice were quite similar with the exception of IL-6 expression and the marked differences in the levels of IL-2 receptor and IL-1 alpha mRNA, 2) CD4+ T lymphocytes expressed IL-4, presumably IL-5, and occasionally IL-10 mRNA but no detectable IL-2 mRNA, 3) CD8+ T lymphocytes exhibited TNF-beta, perforin and high levels of IFN-gamma, and 4) IL-7 was expressed in the islet at very high levels.
1027 8119667 They may be CD4+ or CD8+ and recognize autologous T cells in the presence of autologous PBMC as feeder cells.
1028 8163049 Using two and three colour cytofluorimetry, we studied total and activated (HLA-DR+) CD3+, CD4+, CD8+, lymphocytes and on CD4+ lymphocytes the CD45RA/RO "naive" and "memory" cell phenotypes.
1029 8163049 Amongst the siblings and parents, possession of HLA-DR4 was associated with lower percentages of CD4+ and higher percentages of CD8+ T cells.
1030 8163049 Using two and three colour cytofluorimetry, we studied total and activated (HLA-DR+) CD3+, CD4+, CD8+, lymphocytes and on CD4+ lymphocytes the CD45RA/RO "naive" and "memory" cell phenotypes.
1031 8163049 Amongst the siblings and parents, possession of HLA-DR4 was associated with lower percentages of CD4+ and higher percentages of CD8+ T cells.
1032 8178053 It consists of HLA class I genes and molecules (A, B and C) which control CD8+ cell-mediated antiviral responses, and class II genes and molecules (DR, DQ and DP) which control CD4+ cell responses (anti-bacterial and anti-toxin).
1033 8178053 HLA molecules function by presenting antigenic peptides to CD8+ cells (class I) and CD4+ cells (class II).
1034 8178053 It consists of HLA class I genes and molecules (A, B and C) which control CD8+ cell-mediated antiviral responses, and class II genes and molecules (DR, DQ and DP) which control CD4+ cell responses (anti-bacterial and anti-toxin).
1035 8178053 HLA molecules function by presenting antigenic peptides to CD8+ cells (class I) and CD4+ cells (class II).
1036 8201786 The infiltrating cells were almost all lymphocytes, and the ratio of CD4 to CD8 was 3.8.
1037 8207221 Lymphocytes infiltrating salivary glands expressed LFA-1 and Pgp-1 although Mel-14 Ag was absent.
1038 8207221 With regard to peripheral lymphocytes, the proportion of CD4 and CD8 cells expressing Mel-14 was decreased in the infiltrated islets, whereas the expression of LFA-1, Pgp-1, and LPAM-1/2 was increased.
1039 8207221 Moreover, the proportion of CD4, CD8, and B lymphocytes expressing CD69 was increased in the pancreas.
1040 8207221 Lymphocytes infiltrating salivary glands expressed LFA-1 and Pgp-1 although Mel-14 Ag was absent.
1041 8207221 With regard to peripheral lymphocytes, the proportion of CD4 and CD8 cells expressing Mel-14 was decreased in the infiltrated islets, whereas the expression of LFA-1, Pgp-1, and LPAM-1/2 was increased.
1042 8207221 Moreover, the proportion of CD4, CD8, and B lymphocytes expressing CD69 was increased in the pancreas.
1043 8218826 The thymus of these mice was also found to have an increased proportion of CD3+ thymocytes while CD4/CD8 double positive thymocytes decreased 7 d after CP.
1044 8227346 We examined pancreas biopsy specimens from 18 newly diagnosed insulin-dependent diabetes mellitus (IDDM) patients to elucidate the mechanism underlying beta cell destruction.
1045 8227346 Infiltrating mononuclear cells consisted of CD4+T, CD8+T, B lymphocytes, and macrophages.
1046 8227346 The expression of intercellular adhesion molecule-1 was increased in endothelial cells in two of the nine patients with MHC hyperexpression; in one of them, lymphocyte function-associated antigen-3 expression was also increased.
1047 8227346 In conclusion, we revealed the close relation between CD8+T lymphocyte-predominant insulitis and MHC class I hyperexpression in islet cells.
1048 8227346 This suggests that infiltrating CD8+T lymphocytes recognize islet autoantigens in association with increased MHC class I molecules and act as major effector cells in autoimmune response against islet cells in IDDM pancreases.
1049 8240789 Changes in the plasma concentrations of interleukin-1 beta (IL-1 beta), tumour necrosis factor alpha (TNF alpha), interleukin 2 (IL-2), and lymphocyte subsets were investigated in 19 persons with newly diagnosed (type 1) insulin-dependent diabetes mellitus (IDDM) from admission to hospital prior to insulin treatment and following 1 week and 1 month of treatment.
1050 8240789 The lymphocyte subsets (CD5+, CD8+, CD4+, CD16+, CD20+, HLA-DR+) did not show any significant changes from admission to after the start of insulin treatment.
1051 8240789 It is concluded that the gradual increase in IL-1 beta and TNF alpha plasma levels may reflect an ongoing autoimmune inflammatory reaction at the onset of IDDM.
1052 8243828 The adoptive transfer of diabetes requires the presence of both CD4+ and CD8+ splenic T-cell subsets.
1053 8243828 Although CD8+ lymph node T-cells seemed functionally comparable to CD8+ splenocytes, CD4+ lymph node T-cells failed to cooperate with CD8+ splenocytes to transfer diabetes.
1054 8243828 The adoptive transfer of diabetes requires the presence of both CD4+ and CD8+ splenic T-cell subsets.
1055 8243828 Although CD8+ lymph node T-cells seemed functionally comparable to CD8+ splenocytes, CD4+ lymph node T-cells failed to cooperate with CD8+ splenocytes to transfer diabetes.
1056 8245789 Resting rat and human T cells bound 125I-AGE-albumin with an affinity of 7.8 x 10(7) M-1, whereas, after stimulation with phytohemagglutinin (PHA) for 48 h, binding affinity increased to 5.8 x 10(8) M-1.
1057 8245789 Flow cytometric analysis of resting rat T cells using polyclonal antibodies raised against rat liver AGE-binding proteins (p60 and p90) revealed the constitutive expression of both immunoreactivities.
1058 8245789 The number of resting CD4+ and CD8+ T cells positive for anti-p60 antibody binding (34.2 and 58.5%, respectively) increased to 92 and 90% of cells after 48-h stimulation with PHA.
1059 8245789 Exposure of PHA-activated T lymphocytes to AGE-albumin enhanced expression of interferon gamma (IFN-gamma) mRNA 10-fold and induced greater elaboration of the mature protein than did exposure to unmodified protein or PHA treatment alone.
1060 8258349 The infiltrate contains both CD4+ and CD8+ T cells and both are required for progression to diabetes in non-obese diabetic (NOD) mice.
1061 8258349 It has been thought that the CD4+ lymphocytes are the initiators of the disease, the islet invaders, while CD8+ cells are the effectors, the islet destroyers.
1062 8258349 We question this interpretation because NOD mice lacking MHC class I molecules, hence CD8+ T cells, do not display even insulitis when expected.
1063 8258349 The infiltrate contains both CD4+ and CD8+ T cells and both are required for progression to diabetes in non-obese diabetic (NOD) mice.
1064 8258349 It has been thought that the CD4+ lymphocytes are the initiators of the disease, the islet invaders, while CD8+ cells are the effectors, the islet destroyers.
1065 8258349 We question this interpretation because NOD mice lacking MHC class I molecules, hence CD8+ T cells, do not display even insulitis when expected.
1066 8262310 Lymphocyte antibodies have been described in autoimmune disorders, including insulin-dependent diabetes mellitus (IDDM).
1067 8262310 We demonstrated the binding of the lymphocyte autoantibodies of both CD4+ and CD8+ T-cells.
1068 8262316 In spite of the fact that CD4 plays a critical role in thymocyte development, the abnormal signaling does not appear to influence thymocyte development at the stage when the T-cell receptor is rearranged and the recombinase enzymes RAG-1 and RAG-2 transcripts are downregulated.
1069 8270129 Analyses of T-cell subsets before and after diabetes onset revealed CD4+ T cells as predominant (50-55% of total T cells) with double-negative (CD4-CD8-) T cells (25-30%) and CD8+ T cells (15-20%) also present in significant quantities.
1070 8296226 Critical immunological values were established (CD5+ cells--1200 in 1 microliter, CD4+ cells--35%, expression of CD5 and antigens HLA class II--110 and 75%, respectively) for septic complications which are highly probable in lower indices.
1071 8314024 Although it is widely agreed that class II-restricted CD4+ T-cells are essential for the development of diabetes in the NOD model, some studies have suggested that CD8+ T-cells are not required for beta-cell destruction.
1072 8314024 To assess the contribution of CD8+ T-cells to diabetes, we have developed a class of NOD mouse that lacks expression of beta 2-microglobulin (NOD-B2mnull).
1073 8315397 Beginning at the time of insulitis (7 wk of age), CD4+ and CD8+ mature thymocytes from nonobese diabetic (NOD) mice exhibit a proliferative unresponsiveness in vitro after T cell receptor (TCR) crosslinking.
1074 8315397 However, since equivalent levels of IL-3 were secreted by Con A-activated NOD and BALB/c thymocytes, the unresponsiveness of NOD thymic T cells does not appear to be dependent on reduced IL-2 secretion.
1075 8315397 Exogenous recombinant (r)IL-2 only partially reverses NOD thymocyte proliferative unresponsiveness to anti-CD3, and this is mediated by the inability of IL-2 to stimulate a complete IL-4 secretion response.
1076 8315397 In contrast, exogenous IL-4 reverses the unresponsiveness of both NOD thymic and peripheral T cells completely, and this is associated with the complete restoration of an IL-2 secretion response.
1077 8318452 The non-obese diabetic (NOD) mouse spontaneously develops a T cell-mediated autoimmune disease, sharing many features with human insulin-dependent diabetes mellitus (IDDM), leading to insulin-secreting beta cell destruction.
1078 8318452 First, CD4+ T cells from diabetic animals are required to transfer diabetes to non-diabetic recipients in conjunction with CD8+ effector T cells.
1079 8364190 The neoplastic cells expressed the T-cell receptor (TCR)delta chain detected by TCR delta 1 and delta-TCS1, CD3, CD30, CD45RO, and epithelial membrane antigen, but not the TCR beta chain detected by beta F1, CD1a, CD2, CD4, CD5, CD7, CD8, CD25, HLA-DR, and terminal deoxynucleotidyl transferase.
1080 8387218 Patient response was assessed using changes in CD4+ lymphocyte subset count, HIV p24 antigen, weight, and quality of life.
1081 8387218 Of those positive for p24 antigen at the commencement of the study 67% showed a positive response, and this was most likely in those with CD4+ lymphocyte subset counts above 100 mm3.
1082 8387218 Patient response was assessed using changes in CD4+ lymphocyte subset count, HIV p24 antigen, weight, and quality of life.
1083 8387218 Of those positive for p24 antigen at the commencement of the study 67% showed a positive response, and this was most likely in those with CD4+ lymphocyte subset counts above 100 mm3.
1084 8405701 Tolerance to IDDM induced by CD4 antibodies in nonobese diabetic mice is reversed by cyclophosphamide.
1085 8405709 In IDDM, mononuclear cells accumulate in the islets of Langerhans and destroy insulin-producing beta-cells.
1086 8405709 The cell line was uniformly CD4-positive, TCR V beta 5.1-positive, LFA-1-positive (CD 11a/CD18), VLA-4 alpha-positive (CD 49d), and CD 44-positive but negative for L-selectin (peripheral lymph node homing receptor).
1087 8409408 Several staphylococcal enterotoxins (SE) (SEA, SEC1, SEC2, or SEC3), which are known superantigens, were injected i.v. into female NOD mice at 4 and 10 wk of age.
1088 8409408 Suppressor activity of splenocytes from SE-treated mice was diminished by the depletion of CD4+ T cells, but not by the depletion of CD8+ T cells, indicating that the suppressor cells belonged to the CD4+ T class of lymphocytes.
1089 8420039 Granzyme A is a serine protease expressed by populations of human and mouse natural killer cells and activated CD4+ and CD8+ cytotoxic lymphocytes; its expression marks a subset of inflammatory cells in allografts, autoimmune diabetes, and a number of other inflammatory lesions.
1090 8420039 The grafts were evaluated by palpation for cardiac functions, by immunohistochemistry for CD4/CD8 expression, by hematoxylin-and-eosin staining for inflammatory infiltration, and by in situ hybridization for granzyme A expression.
1091 8420039 Granzyme A is a serine protease expressed by populations of human and mouse natural killer cells and activated CD4+ and CD8+ cytotoxic lymphocytes; its expression marks a subset of inflammatory cells in allografts, autoimmune diabetes, and a number of other inflammatory lesions.
1092 8420039 The grafts were evaluated by palpation for cardiac functions, by immunohistochemistry for CD4/CD8 expression, by hematoxylin-and-eosin staining for inflammatory infiltration, and by in situ hybridization for granzyme A expression.
1093 8420810 The monoclonal antibodies 2H4 (anti-CD45RA) and UCHL1 (anti-CD45RO) were used to subdivide the CD4 and CD8 T-cell subsets into naive and memory cells.
1094 8420810 CD4 and CD8 lymphocytes expressed the CD45 isoforms alone (CD45RA+ or CD45RO+) or in combination CD45RA+RO+).
1095 8420810 Simultaneous coexpression of both CD45RA and CD45RO (CD45RA+RO+) on CD4 and CD8 lymphocytes in patients with recent-onset IDDM was higher than in control subjects (P < 0.001).
1096 8420810 The proportion of CD4 lymphocytes expressing CD45RA alone (CD45RA+RO-) was similar in these groups, but the percentage of CD8 lymphocytes that were CD45RA+RO- was significantly higher in the patients with recent-onset IDDM (P < 0.05).
1097 8420810 The result of these changes is a significant increase in expression of naive phenotypes (CD45RA+ and CD45RA+RO+) on CD4 and CD8 lymphocytes in recent-onset IDDM (P < 0.005 and P < 0.0001).
1098 8420810 In long-standing IDDM, total CD45RA+ expression on CD4 and CD8 lymphocytes was reduced compared with control subjects (P < 0.05) as a result of a tendency of CD45RA+RO- and CD45RA+RO+ subsets to be lower.
1099 8420810 This increase in total naive (CD45RA+) lymphocytes and in coexpression of naive (CD45RA) and memory (CD45RO) markers on CD4 and CD8 lymphocytes subsets in patients with recent-onset IDDM suggests that abnormal regulation of T-cell activation and maturation is important in the pathogenesis of the disease.
1100 8420810 The monoclonal antibodies 2H4 (anti-CD45RA) and UCHL1 (anti-CD45RO) were used to subdivide the CD4 and CD8 T-cell subsets into naive and memory cells.
1101 8420810 CD4 and CD8 lymphocytes expressed the CD45 isoforms alone (CD45RA+ or CD45RO+) or in combination CD45RA+RO+).
1102 8420810 Simultaneous coexpression of both CD45RA and CD45RO (CD45RA+RO+) on CD4 and CD8 lymphocytes in patients with recent-onset IDDM was higher than in control subjects (P < 0.001).
1103 8420810 The proportion of CD4 lymphocytes expressing CD45RA alone (CD45RA+RO-) was similar in these groups, but the percentage of CD8 lymphocytes that were CD45RA+RO- was significantly higher in the patients with recent-onset IDDM (P < 0.05).
1104 8420810 The result of these changes is a significant increase in expression of naive phenotypes (CD45RA+ and CD45RA+RO+) on CD4 and CD8 lymphocytes in recent-onset IDDM (P < 0.005 and P < 0.0001).
1105 8420810 In long-standing IDDM, total CD45RA+ expression on CD4 and CD8 lymphocytes was reduced compared with control subjects (P < 0.05) as a result of a tendency of CD45RA+RO- and CD45RA+RO+ subsets to be lower.
1106 8420810 This increase in total naive (CD45RA+) lymphocytes and in coexpression of naive (CD45RA) and memory (CD45RO) markers on CD4 and CD8 lymphocytes subsets in patients with recent-onset IDDM suggests that abnormal regulation of T-cell activation and maturation is important in the pathogenesis of the disease.
1107 8420810 The monoclonal antibodies 2H4 (anti-CD45RA) and UCHL1 (anti-CD45RO) were used to subdivide the CD4 and CD8 T-cell subsets into naive and memory cells.
1108 8420810 CD4 and CD8 lymphocytes expressed the CD45 isoforms alone (CD45RA+ or CD45RO+) or in combination CD45RA+RO+).
1109 8420810 Simultaneous coexpression of both CD45RA and CD45RO (CD45RA+RO+) on CD4 and CD8 lymphocytes in patients with recent-onset IDDM was higher than in control subjects (P < 0.001).
1110 8420810 The proportion of CD4 lymphocytes expressing CD45RA alone (CD45RA+RO-) was similar in these groups, but the percentage of CD8 lymphocytes that were CD45RA+RO- was significantly higher in the patients with recent-onset IDDM (P < 0.05).
1111 8420810 The result of these changes is a significant increase in expression of naive phenotypes (CD45RA+ and CD45RA+RO+) on CD4 and CD8 lymphocytes in recent-onset IDDM (P < 0.005 and P < 0.0001).
1112 8420810 In long-standing IDDM, total CD45RA+ expression on CD4 and CD8 lymphocytes was reduced compared with control subjects (P < 0.05) as a result of a tendency of CD45RA+RO- and CD45RA+RO+ subsets to be lower.
1113 8420810 This increase in total naive (CD45RA+) lymphocytes and in coexpression of naive (CD45RA) and memory (CD45RO) markers on CD4 and CD8 lymphocytes subsets in patients with recent-onset IDDM suggests that abnormal regulation of T-cell activation and maturation is important in the pathogenesis of the disease.
1114 8420810 The monoclonal antibodies 2H4 (anti-CD45RA) and UCHL1 (anti-CD45RO) were used to subdivide the CD4 and CD8 T-cell subsets into naive and memory cells.
1115 8420810 CD4 and CD8 lymphocytes expressed the CD45 isoforms alone (CD45RA+ or CD45RO+) or in combination CD45RA+RO+).
1116 8420810 Simultaneous coexpression of both CD45RA and CD45RO (CD45RA+RO+) on CD4 and CD8 lymphocytes in patients with recent-onset IDDM was higher than in control subjects (P < 0.001).
1117 8420810 The proportion of CD4 lymphocytes expressing CD45RA alone (CD45RA+RO-) was similar in these groups, but the percentage of CD8 lymphocytes that were CD45RA+RO- was significantly higher in the patients with recent-onset IDDM (P < 0.05).
1118 8420810 The result of these changes is a significant increase in expression of naive phenotypes (CD45RA+ and CD45RA+RO+) on CD4 and CD8 lymphocytes in recent-onset IDDM (P < 0.005 and P < 0.0001).
1119 8420810 In long-standing IDDM, total CD45RA+ expression on CD4 and CD8 lymphocytes was reduced compared with control subjects (P < 0.05) as a result of a tendency of CD45RA+RO- and CD45RA+RO+ subsets to be lower.
1120 8420810 This increase in total naive (CD45RA+) lymphocytes and in coexpression of naive (CD45RA) and memory (CD45RO) markers on CD4 and CD8 lymphocytes subsets in patients with recent-onset IDDM suggests that abnormal regulation of T-cell activation and maturation is important in the pathogenesis of the disease.
1121 8420810 The monoclonal antibodies 2H4 (anti-CD45RA) and UCHL1 (anti-CD45RO) were used to subdivide the CD4 and CD8 T-cell subsets into naive and memory cells.
1122 8420810 CD4 and CD8 lymphocytes expressed the CD45 isoforms alone (CD45RA+ or CD45RO+) or in combination CD45RA+RO+).
1123 8420810 Simultaneous coexpression of both CD45RA and CD45RO (CD45RA+RO+) on CD4 and CD8 lymphocytes in patients with recent-onset IDDM was higher than in control subjects (P < 0.001).
1124 8420810 The proportion of CD4 lymphocytes expressing CD45RA alone (CD45RA+RO-) was similar in these groups, but the percentage of CD8 lymphocytes that were CD45RA+RO- was significantly higher in the patients with recent-onset IDDM (P < 0.05).
1125 8420810 The result of these changes is a significant increase in expression of naive phenotypes (CD45RA+ and CD45RA+RO+) on CD4 and CD8 lymphocytes in recent-onset IDDM (P < 0.005 and P < 0.0001).
1126 8420810 In long-standing IDDM, total CD45RA+ expression on CD4 and CD8 lymphocytes was reduced compared with control subjects (P < 0.05) as a result of a tendency of CD45RA+RO- and CD45RA+RO+ subsets to be lower.
1127 8420810 This increase in total naive (CD45RA+) lymphocytes and in coexpression of naive (CD45RA) and memory (CD45RO) markers on CD4 and CD8 lymphocytes subsets in patients with recent-onset IDDM suggests that abnormal regulation of T-cell activation and maturation is important in the pathogenesis of the disease.
1128 8420810 The monoclonal antibodies 2H4 (anti-CD45RA) and UCHL1 (anti-CD45RO) were used to subdivide the CD4 and CD8 T-cell subsets into naive and memory cells.
1129 8420810 CD4 and CD8 lymphocytes expressed the CD45 isoforms alone (CD45RA+ or CD45RO+) or in combination CD45RA+RO+).
1130 8420810 Simultaneous coexpression of both CD45RA and CD45RO (CD45RA+RO+) on CD4 and CD8 lymphocytes in patients with recent-onset IDDM was higher than in control subjects (P < 0.001).
1131 8420810 The proportion of CD4 lymphocytes expressing CD45RA alone (CD45RA+RO-) was similar in these groups, but the percentage of CD8 lymphocytes that were CD45RA+RO- was significantly higher in the patients with recent-onset IDDM (P < 0.05).
1132 8420810 The result of these changes is a significant increase in expression of naive phenotypes (CD45RA+ and CD45RA+RO+) on CD4 and CD8 lymphocytes in recent-onset IDDM (P < 0.005 and P < 0.0001).
1133 8420810 In long-standing IDDM, total CD45RA+ expression on CD4 and CD8 lymphocytes was reduced compared with control subjects (P < 0.05) as a result of a tendency of CD45RA+RO- and CD45RA+RO+ subsets to be lower.
1134 8420810 This increase in total naive (CD45RA+) lymphocytes and in coexpression of naive (CD45RA) and memory (CD45RO) markers on CD4 and CD8 lymphocytes subsets in patients with recent-onset IDDM suggests that abnormal regulation of T-cell activation and maturation is important in the pathogenesis of the disease.
1135 8420810 The monoclonal antibodies 2H4 (anti-CD45RA) and UCHL1 (anti-CD45RO) were used to subdivide the CD4 and CD8 T-cell subsets into naive and memory cells.
1136 8420810 CD4 and CD8 lymphocytes expressed the CD45 isoforms alone (CD45RA+ or CD45RO+) or in combination CD45RA+RO+).
1137 8420810 Simultaneous coexpression of both CD45RA and CD45RO (CD45RA+RO+) on CD4 and CD8 lymphocytes in patients with recent-onset IDDM was higher than in control subjects (P < 0.001).
1138 8420810 The proportion of CD4 lymphocytes expressing CD45RA alone (CD45RA+RO-) was similar in these groups, but the percentage of CD8 lymphocytes that were CD45RA+RO- was significantly higher in the patients with recent-onset IDDM (P < 0.05).
1139 8420810 The result of these changes is a significant increase in expression of naive phenotypes (CD45RA+ and CD45RA+RO+) on CD4 and CD8 lymphocytes in recent-onset IDDM (P < 0.005 and P < 0.0001).
1140 8420810 In long-standing IDDM, total CD45RA+ expression on CD4 and CD8 lymphocytes was reduced compared with control subjects (P < 0.05) as a result of a tendency of CD45RA+RO- and CD45RA+RO+ subsets to be lower.
1141 8420810 This increase in total naive (CD45RA+) lymphocytes and in coexpression of naive (CD45RA) and memory (CD45RO) markers on CD4 and CD8 lymphocytes subsets in patients with recent-onset IDDM suggests that abnormal regulation of T-cell activation and maturation is important in the pathogenesis of the disease.
1142 8472311 Through CD4, the signal transduction machinery is stimulated via its association with p56lck.
1143 8492638 Aged C57Bl/6 mice showed significant suppression of Con A-stimulated Ca2+ mobilization in both CD4+ and CD8+T cells compared to young mice.
1144 8492638 Similarly, aged mice exhibited a significant increase in spontaneous IL-2R expression in both CD4+ and CD8+ T cells.
1145 8492638 Aged C57Bl/6 mice showed significant suppression of Con A-stimulated Ca2+ mobilization in both CD4+ and CD8+T cells compared to young mice.
1146 8492638 Similarly, aged mice exhibited a significant increase in spontaneous IL-2R expression in both CD4+ and CD8+ T cells.
1147 8496610 To study self reactivity, a transgenic mouse model has been established in which the lymphocytic choriomeningitis virus (LCMV) glycoprotein (gp) is expressed in the beta-islet cells of the pancreas (rat insulin promoter (RIP)-gp).
1148 8496610 In this study, comparative analysis of H-2k RIP-gp-transgenic animals demonstrated that the haplotype influences the incidence and kinetics of diabetes and alters the requirement for the CD4+ T cell subset.
1149 8496610 Transgenic mice expressing both LCMV-gp and TNF-alpha under the control of the RIP were infected with vacc-gp, and 50% of RIP-gp/TNF-alpha-transgenic animals became hyperglycemic.
1150 8522063 CD45RB(low) CD4+ splenocytes from diabetic NOD mice were transferred along with CD8+ splenocytes from diabetic mice into NOD-scid recipients, and all of the recipients became diabetic within 5 weeks posttransfer.
1151 8522063 In contrast, no recipients (0 of 10) of CD45RB(high) CD4+ cells along with CD8+ splenocytes from diabetic mice became diabetic within 5 weeks posttransfer (P < 0.001).
1152 8522063 CD45RB(low) CD4+ cells from diabetic mice showed a significantly higher ratio (approximately fivefold) of gamma-interferon (IFN-gamma) to interleukin (IL)-4 when compared with CD45RB(low) CD4+ cells from nondiabetic mice (P < 0.001).
1153 8522063 CD45RB(low) CD4+ splenocytes from diabetic NOD mice were transferred along with CD8+ splenocytes from diabetic mice into NOD-scid recipients, and all of the recipients became diabetic within 5 weeks posttransfer.
1154 8522063 In contrast, no recipients (0 of 10) of CD45RB(high) CD4+ cells along with CD8+ splenocytes from diabetic mice became diabetic within 5 weeks posttransfer (P < 0.001).
1155 8522063 CD45RB(low) CD4+ cells from diabetic mice showed a significantly higher ratio (approximately fivefold) of gamma-interferon (IFN-gamma) to interleukin (IL)-4 when compared with CD45RB(low) CD4+ cells from nondiabetic mice (P < 0.001).
1156 8522063 CD45RB(low) CD4+ splenocytes from diabetic NOD mice were transferred along with CD8+ splenocytes from diabetic mice into NOD-scid recipients, and all of the recipients became diabetic within 5 weeks posttransfer.
1157 8522063 In contrast, no recipients (0 of 10) of CD45RB(high) CD4+ cells along with CD8+ splenocytes from diabetic mice became diabetic within 5 weeks posttransfer (P < 0.001).
1158 8522063 CD45RB(low) CD4+ cells from diabetic mice showed a significantly higher ratio (approximately fivefold) of gamma-interferon (IFN-gamma) to interleukin (IL)-4 when compared with CD45RB(low) CD4+ cells from nondiabetic mice (P < 0.001).
1159 8529494 A novel function of islet-derived CD8+T cells in initiating and developing autoimmune insulin-dependent diabetes mellitus in non-obese diabetic (NOD) mice.
1160 8529494 Accumulated studies revealed that CD4+T cells were initially required for diabetes in NOD mice, whereas interaction of CD4+T/CD8+T cells is not fully understood.
1161 8529494 To address this question, we established islet-derived CD4+T cells and CD8+T cells from NOD mice.
1162 8529494 One NOD neonate that received CD4+T cells developed diabetes and insulitis with CD8+T cells.
1163 8529494 Similarly, it was observed that neonates that received islet-derived CD8+T cells developed diabetes and obvious insulitis mainly with CD4+T cells.
1164 8529494 These results imply that CD8+T cells function as an initial element to recruit CD4+T cells to islets as well as a final effector.
1165 8529494 A novel function of islet-derived CD8+T cells in initiating and developing autoimmune insulin-dependent diabetes mellitus in non-obese diabetic (NOD) mice.
1166 8529494 Accumulated studies revealed that CD4+T cells were initially required for diabetes in NOD mice, whereas interaction of CD4+T/CD8+T cells is not fully understood.
1167 8529494 To address this question, we established islet-derived CD4+T cells and CD8+T cells from NOD mice.
1168 8529494 One NOD neonate that received CD4+T cells developed diabetes and insulitis with CD8+T cells.
1169 8529494 Similarly, it was observed that neonates that received islet-derived CD8+T cells developed diabetes and obvious insulitis mainly with CD4+T cells.
1170 8529494 These results imply that CD8+T cells function as an initial element to recruit CD4+T cells to islets as well as a final effector.
1171 8529494 A novel function of islet-derived CD8+T cells in initiating and developing autoimmune insulin-dependent diabetes mellitus in non-obese diabetic (NOD) mice.
1172 8529494 Accumulated studies revealed that CD4+T cells were initially required for diabetes in NOD mice, whereas interaction of CD4+T/CD8+T cells is not fully understood.
1173 8529494 To address this question, we established islet-derived CD4+T cells and CD8+T cells from NOD mice.
1174 8529494 One NOD neonate that received CD4+T cells developed diabetes and insulitis with CD8+T cells.
1175 8529494 Similarly, it was observed that neonates that received islet-derived CD8+T cells developed diabetes and obvious insulitis mainly with CD4+T cells.
1176 8529494 These results imply that CD8+T cells function as an initial element to recruit CD4+T cells to islets as well as a final effector.
1177 8529494 A novel function of islet-derived CD8+T cells in initiating and developing autoimmune insulin-dependent diabetes mellitus in non-obese diabetic (NOD) mice.
1178 8529494 Accumulated studies revealed that CD4+T cells were initially required for diabetes in NOD mice, whereas interaction of CD4+T/CD8+T cells is not fully understood.
1179 8529494 To address this question, we established islet-derived CD4+T cells and CD8+T cells from NOD mice.
1180 8529494 One NOD neonate that received CD4+T cells developed diabetes and insulitis with CD8+T cells.
1181 8529494 Similarly, it was observed that neonates that received islet-derived CD8+T cells developed diabetes and obvious insulitis mainly with CD4+T cells.
1182 8529494 These results imply that CD8+T cells function as an initial element to recruit CD4+T cells to islets as well as a final effector.
1183 8529494 A novel function of islet-derived CD8+T cells in initiating and developing autoimmune insulin-dependent diabetes mellitus in non-obese diabetic (NOD) mice.
1184 8529494 Accumulated studies revealed that CD4+T cells were initially required for diabetes in NOD mice, whereas interaction of CD4+T/CD8+T cells is not fully understood.
1185 8529494 To address this question, we established islet-derived CD4+T cells and CD8+T cells from NOD mice.
1186 8529494 One NOD neonate that received CD4+T cells developed diabetes and insulitis with CD8+T cells.
1187 8529494 Similarly, it was observed that neonates that received islet-derived CD8+T cells developed diabetes and obvious insulitis mainly with CD4+T cells.
1188 8529494 These results imply that CD8+T cells function as an initial element to recruit CD4+T cells to islets as well as a final effector.
1189 8558007 Abnormal thymocyte subset distribution and differential reduction of CD4+ and CD8+ T cell subsets during peripheral maturation in diabetes-prone BioBreeding rats.
1190 8558007 In this study we quantified CD8+ and CD4+ T cells in T lymphocytopenic BB rats as compared with control rats at given stages along the maturational pathway from immature thymocytes to mature peripheral T cells.
1191 8558007 Numbers of mature TCRhigh/CD4-8+ thymocytes, and also their TCRhigh/CD4+8+ precursors were decreased, as were levels of CD8 expression on all thymocyte subsets investigated.
1192 8558007 Furthermore, as related to the number of available mature TCRhigh single positive thymocytes, numbers of CD4+ and CD8+ T cells most recently migrated from the thymus were severely decreased in BB blood, indicating either reduced thymic output or rapid cell death after migration.
1193 8558007 Subsequently, in peripheral blood and cervical lymph nodes, a 95% decrease of CD8+ and a 50 to 80% decrease of CD4+ T cells were demonstrated upon maturation from recent thymic migrants to mature peripheral T cells, leaving the BB rat with a severely reduced T cell population, consisting of CD4+ T cells and a minute population of CD8+ T cells.
1194 8558007 Abnormal thymocyte subset distribution and differential reduction of CD4+ and CD8+ T cell subsets during peripheral maturation in diabetes-prone BioBreeding rats.
1195 8558007 In this study we quantified CD8+ and CD4+ T cells in T lymphocytopenic BB rats as compared with control rats at given stages along the maturational pathway from immature thymocytes to mature peripheral T cells.
1196 8558007 Numbers of mature TCRhigh/CD4-8+ thymocytes, and also their TCRhigh/CD4+8+ precursors were decreased, as were levels of CD8 expression on all thymocyte subsets investigated.
1197 8558007 Furthermore, as related to the number of available mature TCRhigh single positive thymocytes, numbers of CD4+ and CD8+ T cells most recently migrated from the thymus were severely decreased in BB blood, indicating either reduced thymic output or rapid cell death after migration.
1198 8558007 Subsequently, in peripheral blood and cervical lymph nodes, a 95% decrease of CD8+ and a 50 to 80% decrease of CD4+ T cells were demonstrated upon maturation from recent thymic migrants to mature peripheral T cells, leaving the BB rat with a severely reduced T cell population, consisting of CD4+ T cells and a minute population of CD8+ T cells.
1199 8558007 Abnormal thymocyte subset distribution and differential reduction of CD4+ and CD8+ T cell subsets during peripheral maturation in diabetes-prone BioBreeding rats.
1200 8558007 In this study we quantified CD8+ and CD4+ T cells in T lymphocytopenic BB rats as compared with control rats at given stages along the maturational pathway from immature thymocytes to mature peripheral T cells.
1201 8558007 Numbers of mature TCRhigh/CD4-8+ thymocytes, and also their TCRhigh/CD4+8+ precursors were decreased, as were levels of CD8 expression on all thymocyte subsets investigated.
1202 8558007 Furthermore, as related to the number of available mature TCRhigh single positive thymocytes, numbers of CD4+ and CD8+ T cells most recently migrated from the thymus were severely decreased in BB blood, indicating either reduced thymic output or rapid cell death after migration.
1203 8558007 Subsequently, in peripheral blood and cervical lymph nodes, a 95% decrease of CD8+ and a 50 to 80% decrease of CD4+ T cells were demonstrated upon maturation from recent thymic migrants to mature peripheral T cells, leaving the BB rat with a severely reduced T cell population, consisting of CD4+ T cells and a minute population of CD8+ T cells.
1204 8558007 Abnormal thymocyte subset distribution and differential reduction of CD4+ and CD8+ T cell subsets during peripheral maturation in diabetes-prone BioBreeding rats.
1205 8558007 In this study we quantified CD8+ and CD4+ T cells in T lymphocytopenic BB rats as compared with control rats at given stages along the maturational pathway from immature thymocytes to mature peripheral T cells.
1206 8558007 Numbers of mature TCRhigh/CD4-8+ thymocytes, and also their TCRhigh/CD4+8+ precursors were decreased, as were levels of CD8 expression on all thymocyte subsets investigated.
1207 8558007 Furthermore, as related to the number of available mature TCRhigh single positive thymocytes, numbers of CD4+ and CD8+ T cells most recently migrated from the thymus were severely decreased in BB blood, indicating either reduced thymic output or rapid cell death after migration.
1208 8558007 Subsequently, in peripheral blood and cervical lymph nodes, a 95% decrease of CD8+ and a 50 to 80% decrease of CD4+ T cells were demonstrated upon maturation from recent thymic migrants to mature peripheral T cells, leaving the BB rat with a severely reduced T cell population, consisting of CD4+ T cells and a minute population of CD8+ T cells.
1209 8558007 Abnormal thymocyte subset distribution and differential reduction of CD4+ and CD8+ T cell subsets during peripheral maturation in diabetes-prone BioBreeding rats.
1210 8558007 In this study we quantified CD8+ and CD4+ T cells in T lymphocytopenic BB rats as compared with control rats at given stages along the maturational pathway from immature thymocytes to mature peripheral T cells.
1211 8558007 Numbers of mature TCRhigh/CD4-8+ thymocytes, and also their TCRhigh/CD4+8+ precursors were decreased, as were levels of CD8 expression on all thymocyte subsets investigated.
1212 8558007 Furthermore, as related to the number of available mature TCRhigh single positive thymocytes, numbers of CD4+ and CD8+ T cells most recently migrated from the thymus were severely decreased in BB blood, indicating either reduced thymic output or rapid cell death after migration.
1213 8558007 Subsequently, in peripheral blood and cervical lymph nodes, a 95% decrease of CD8+ and a 50 to 80% decrease of CD4+ T cells were demonstrated upon maturation from recent thymic migrants to mature peripheral T cells, leaving the BB rat with a severely reduced T cell population, consisting of CD4+ T cells and a minute population of CD8+ T cells.
1214 8591703 Insulitis lesions were examined immunohistochemically for CD4, CD8 and MAC-1 cells.
1215 8593938 Transfer of an interleukin 2/interferon-gamma-secreting islet-specific CD4+ T-cell clone, BDC-6.9, in the immunodeficient NOD-scid mouse induces destruction of pancreatic beta-cells without help from host B-cells, CD4+ T-cells, or CD8+ T-cells.
1216 8593938 Immunohistochemical staining of pancreatic lesions in young NOD mice receiving either BDC-2.5 or BDC-6.9 showed the presence of CD4+, CD8+, Vbeta4+, and MAC-1+ cells within the infiltrate, similar to infiltrates in lesions of spontaneously diabetic female NOD mice.
1217 8593938 In contrast, NOD- scid mice that received BDC-6.9 showed only the presence of CD4+Vb4+ T-cells and a large population of MAC-1+ cells in islet lesions.
1218 8593938 NOD-scid recipients of cotransferred BDC- 2.5/CD8+ splenic T-cells showed a small population of CD4+ T-cells and a larger population of CD8+ T-cells within the infiltrated islets, whereas no infiltrate was detectable in recipients of CD8+ splenocytes or BDC-2.5 alone.
1219 8593938 Transfer of an interleukin 2/interferon-gamma-secreting islet-specific CD4+ T-cell clone, BDC-6.9, in the immunodeficient NOD-scid mouse induces destruction of pancreatic beta-cells without help from host B-cells, CD4+ T-cells, or CD8+ T-cells.
1220 8593938 Immunohistochemical staining of pancreatic lesions in young NOD mice receiving either BDC-2.5 or BDC-6.9 showed the presence of CD4+, CD8+, Vbeta4+, and MAC-1+ cells within the infiltrate, similar to infiltrates in lesions of spontaneously diabetic female NOD mice.
1221 8593938 In contrast, NOD- scid mice that received BDC-6.9 showed only the presence of CD4+Vb4+ T-cells and a large population of MAC-1+ cells in islet lesions.
1222 8593938 NOD-scid recipients of cotransferred BDC- 2.5/CD8+ splenic T-cells showed a small population of CD4+ T-cells and a larger population of CD8+ T-cells within the infiltrated islets, whereas no infiltrate was detectable in recipients of CD8+ splenocytes or BDC-2.5 alone.
1223 8593938 Transfer of an interleukin 2/interferon-gamma-secreting islet-specific CD4+ T-cell clone, BDC-6.9, in the immunodeficient NOD-scid mouse induces destruction of pancreatic beta-cells without help from host B-cells, CD4+ T-cells, or CD8+ T-cells.
1224 8593938 Immunohistochemical staining of pancreatic lesions in young NOD mice receiving either BDC-2.5 or BDC-6.9 showed the presence of CD4+, CD8+, Vbeta4+, and MAC-1+ cells within the infiltrate, similar to infiltrates in lesions of spontaneously diabetic female NOD mice.
1225 8593938 In contrast, NOD- scid mice that received BDC-6.9 showed only the presence of CD4+Vb4+ T-cells and a large population of MAC-1+ cells in islet lesions.
1226 8593938 NOD-scid recipients of cotransferred BDC- 2.5/CD8+ splenic T-cells showed a small population of CD4+ T-cells and a larger population of CD8+ T-cells within the infiltrated islets, whereas no infiltrate was detectable in recipients of CD8+ splenocytes or BDC-2.5 alone.
1227 8593938 Transfer of an interleukin 2/interferon-gamma-secreting islet-specific CD4+ T-cell clone, BDC-6.9, in the immunodeficient NOD-scid mouse induces destruction of pancreatic beta-cells without help from host B-cells, CD4+ T-cells, or CD8+ T-cells.
1228 8593938 Immunohistochemical staining of pancreatic lesions in young NOD mice receiving either BDC-2.5 or BDC-6.9 showed the presence of CD4+, CD8+, Vbeta4+, and MAC-1+ cells within the infiltrate, similar to infiltrates in lesions of spontaneously diabetic female NOD mice.
1229 8593938 In contrast, NOD- scid mice that received BDC-6.9 showed only the presence of CD4+Vb4+ T-cells and a large population of MAC-1+ cells in islet lesions.
1230 8593938 NOD-scid recipients of cotransferred BDC- 2.5/CD8+ splenic T-cells showed a small population of CD4+ T-cells and a larger population of CD8+ T-cells within the infiltrated islets, whereas no infiltrate was detectable in recipients of CD8+ splenocytes or BDC-2.5 alone.
1231 8603576 The effects of growth hormone and insulin-like growth factor I on the immune system of aged female monkeys.
1232 8603576 The aging process is associated with a significant reduction in circulating GH and insulin-like growth factor I (IGF-I) levels.
1233 8603576 At the end of the 7-week period, the animals were killed. rhGH and rhIGF-I increased serum GH and IGF-I levels, respectively; rhGH and rhIGF-I in combination induced the highest serum IGF-I levels (906 +/- 261 ng/ml vs. control, 185 +/- 36 ng/ml at death). rhGH and rhIGF-I also increased IGFBP-3 levels. rhGH infusion resulted in the most marked changes in lymph node and splenic reactivity, as determined by histological assessment.
1234 8603576 In the peripheral blood, the percent B cells and percent CD8 cell count rose after rhIGF-I therapy, with a fall in the CD4/CD8 ratio.
1235 8603576 In the spleen, on the other hand, the CD4/CD8 ratio nearly doubled (0.33 +/- 0.12 vs. 0.53 +/ 0.12) after rhIGF- I therapy.
1236 8603576 In the spleen, the combination of rhGH and rhIGF- I increased the percent T cells from 26.7 +/- 2.3 to 42.4 +/- 4.4 and the CD4/CD8 ration to 0.71 +/- 0.11.
1237 8603576 The effects of growth hormone and insulin-like growth factor I on the immune system of aged female monkeys.
1238 8603576 The aging process is associated with a significant reduction in circulating GH and insulin-like growth factor I (IGF-I) levels.
1239 8603576 At the end of the 7-week period, the animals were killed. rhGH and rhIGF-I increased serum GH and IGF-I levels, respectively; rhGH and rhIGF-I in combination induced the highest serum IGF-I levels (906 +/- 261 ng/ml vs. control, 185 +/- 36 ng/ml at death). rhGH and rhIGF-I also increased IGFBP-3 levels. rhGH infusion resulted in the most marked changes in lymph node and splenic reactivity, as determined by histological assessment.
1240 8603576 In the peripheral blood, the percent B cells and percent CD8 cell count rose after rhIGF-I therapy, with a fall in the CD4/CD8 ratio.
1241 8603576 In the spleen, on the other hand, the CD4/CD8 ratio nearly doubled (0.33 +/- 0.12 vs. 0.53 +/ 0.12) after rhIGF- I therapy.
1242 8603576 In the spleen, the combination of rhGH and rhIGF- I increased the percent T cells from 26.7 +/- 2.3 to 42.4 +/- 4.4 and the CD4/CD8 ration to 0.71 +/- 0.11.
1243 8603576 The effects of growth hormone and insulin-like growth factor I on the immune system of aged female monkeys.
1244 8603576 The aging process is associated with a significant reduction in circulating GH and insulin-like growth factor I (IGF-I) levels.
1245 8603576 At the end of the 7-week period, the animals were killed. rhGH and rhIGF-I increased serum GH and IGF-I levels, respectively; rhGH and rhIGF-I in combination induced the highest serum IGF-I levels (906 +/- 261 ng/ml vs. control, 185 +/- 36 ng/ml at death). rhGH and rhIGF-I also increased IGFBP-3 levels. rhGH infusion resulted in the most marked changes in lymph node and splenic reactivity, as determined by histological assessment.
1246 8603576 In the peripheral blood, the percent B cells and percent CD8 cell count rose after rhIGF-I therapy, with a fall in the CD4/CD8 ratio.
1247 8603576 In the spleen, on the other hand, the CD4/CD8 ratio nearly doubled (0.33 +/- 0.12 vs. 0.53 +/ 0.12) after rhIGF- I therapy.
1248 8603576 In the spleen, the combination of rhGH and rhIGF- I increased the percent T cells from 26.7 +/- 2.3 to 42.4 +/- 4.4 and the CD4/CD8 ration to 0.71 +/- 0.11.
1249 8633371 Transplantation of human fetal pancreas (HFP) is being considered as a potential treatment for insulin-dependent diabetes mellitus (IDDM).
1250 8633371 Allograft rejection was due to human CD4+ and CD8+ cells, as determined by immunohistochemical analysis of graft-infiltrating cells.
1251 8642324 In addition, adoptive transfer of LCMV-GP-specific TCR transgenic perforin-deficient T cells activated by LCMV-GP recombinant vaccinia virus led to marked insulitis with infiltration of CD4+ and CD8+ T cells without the development of diabetes.
1252 8666914 Nasal administration of glutamate decarboxylase (GAD65) peptides induces Th2 responses and prevents murine insulin-dependent diabetes.
1253 8666914 Induction of passive tolerance to GAD65, through inactivation of reactive T cells before the onset of autoimmunity, prevented determinant spreading and the development of insulin-dependent diabetes mellitus (IDDM).
1254 8666914 Here, we examined whether an alternative strategy, designed to induce active tolerance via the engagement of Th2 immune responses to GAD65, before the spontaneous onset of autoimmunity, could inhibit the cascade of Th1 responses that lead to IDDM.
1255 8666914 GAD65 peptide treated mice displayed greatly reduced IFN gamma responses and increased IL-5 responses to GAD65, confirming the diversion of the spontaneous GAD65 Th1 response toward a Th2 phenotype.
1256 8666914 Consistent with the induction of an active tolerance mechanism, splenic CD4+ (but not CD8+) T cells from GAD65 peptide-treated mice, inhibited the adoptive transfer of IDDM to NOD-scid/scid mice.
1257 8666914 Finally, GAD65 peptide treatment reduced insulitis and long-term IDDM incidence.
1258 8690161 In all of the H-2d islet-grafted (NOD x BALB/c) F1 mice that received the beta-CTL clones, the beta-CTLs homed into the grafts, recruited host Mac-1+ cells and CD4+ and CD8+ T-cells, and caused diabetes within 7 days.
1259 8690161 We conclude that (1) islet-derived beta-CTLs can destroy beta-cells in vivo; (2) infiltration of grafted islets by beta-CTLs is an MHC class I-restricted response; (3) beta-CTLs can recruit naive CD4+ T-cells to the site, leading to further beta-cell damage; and (4) revascularized islet grafts are, like pancreatic islets of irradiated adult NOD mice, "sequestered" from circulating beta-CTLs.
1260 8690161 In all of the H-2d islet-grafted (NOD x BALB/c) F1 mice that received the beta-CTL clones, the beta-CTLs homed into the grafts, recruited host Mac-1+ cells and CD4+ and CD8+ T-cells, and caused diabetes within 7 days.
1261 8690161 We conclude that (1) islet-derived beta-CTLs can destroy beta-cells in vivo; (2) infiltration of grafted islets by beta-CTLs is an MHC class I-restricted response; (3) beta-CTLs can recruit naive CD4+ T-cells to the site, leading to further beta-cell damage; and (4) revascularized islet grafts are, like pancreatic islets of irradiated adult NOD mice, "sequestered" from circulating beta-CTLs.
1262 8724837 Recently, we have shown that CD4+ CD8- thymocytes are a highly potent source of cells that have the ability to control autoimmune diabetes in rats.
1263 8734569 T cells from BB-DP rats show a unique cytokine mRNA profile associated with the IDDM1 susceptibility gene, Lyp.
1264 8734569 One of the most pronounced abnormalities in these animals is a marked T cell lymphopenia which is evident in both CD4+ and CD8+ peripheral T cell subsets.
1265 8738958 According to immunocytochemical analysis, the pancreatic inflammatory infiltrates of streptozotocin-injected transgenic mice contained CD4+ and CD8+ T lymphocytes, B lymphocytes and macrophages.
1266 8738973 We now report that cyclophosphamide constitutes an apoptosis signal to peripheral lymphocytes and we provide evidence that NOD B cells as well as both CD4 and CD8 T cells display resistance to cyclophosphamide-induced apoptosis.
1267 8740409 Immunophenotyping of the inflammatory infiltrate with rat lymphocyte-specific markers showed CD45-, CD8-, and CD4-positive cells.
1268 8746558 Likewise, the NOD-derived NIT-1 beta cell line did not express surface B7 or B7-1 mRNA either constitutively or following exposure to IFN-gamma and TNF-alpha, two cytokines known to be present in the insulitis lesion of NOD mice, or cAMP which can induce B7-1 expression on B cells.
1269 8746558 By immunohistochemistry and flow cytometry, it was determined that the phenotype of B7+ cells in the pancreas of NOD mice 9 days after cyclophosphamide included a mixture of macrophages and both CD4+ and CD8+ T cells.
1270 8746558 RIP-IL-2 transgenic mice, which have extensive islet infiltration but no autoimmune beta cell destruction, also had virtually no B7-1 expression and a minority of B7-2-expressing inflammatory cells.
1271 8747721 Circulating lymphocyte subset imbalance is associated with type-1 insulin-dependent diabetes mellitus (IDDM).
1272 8747721 Total B lymphocytes, CD19+ cells, was increased in IDDM patients (P = 0.001), but was comparable to controls in IDDM patients' first-degree relatives.
1273 8747721 No quantitative abnormality was demonstrated in CD4+ cells in IDDM patients; however, these cells were higher in their first-degree relatives (P = 0.0089).
1274 8747721 Suppressor T lymphocytes, CD8+ cells, in first-degree relatives and controls were not significantly different; however, these cells were significantly reduced in IDDM patients (P = 0.001).
1275 8747721 The ratio of CD4+/CD8+ cells was higher in IDDM patients and their first-degree relatives compared to controls (P = 0.0007 and 0.0103, respectively).
1276 8747721 However, no relationship was found in the levels of CD3+, CD4+ or CD8+ cells in patients possessing either DR3 or DR4.
1277 8747721 Circulating lymphocyte subset imbalance is associated with type-1 insulin-dependent diabetes mellitus (IDDM).
1278 8747721 Total B lymphocytes, CD19+ cells, was increased in IDDM patients (P = 0.001), but was comparable to controls in IDDM patients' first-degree relatives.
1279 8747721 No quantitative abnormality was demonstrated in CD4+ cells in IDDM patients; however, these cells were higher in their first-degree relatives (P = 0.0089).
1280 8747721 Suppressor T lymphocytes, CD8+ cells, in first-degree relatives and controls were not significantly different; however, these cells were significantly reduced in IDDM patients (P = 0.001).
1281 8747721 The ratio of CD4+/CD8+ cells was higher in IDDM patients and their first-degree relatives compared to controls (P = 0.0007 and 0.0103, respectively).
1282 8747721 However, no relationship was found in the levels of CD3+, CD4+ or CD8+ cells in patients possessing either DR3 or DR4.
1283 8747721 Circulating lymphocyte subset imbalance is associated with type-1 insulin-dependent diabetes mellitus (IDDM).
1284 8747721 Total B lymphocytes, CD19+ cells, was increased in IDDM patients (P = 0.001), but was comparable to controls in IDDM patients' first-degree relatives.
1285 8747721 No quantitative abnormality was demonstrated in CD4+ cells in IDDM patients; however, these cells were higher in their first-degree relatives (P = 0.0089).
1286 8747721 Suppressor T lymphocytes, CD8+ cells, in first-degree relatives and controls were not significantly different; however, these cells were significantly reduced in IDDM patients (P = 0.001).
1287 8747721 The ratio of CD4+/CD8+ cells was higher in IDDM patients and their first-degree relatives compared to controls (P = 0.0007 and 0.0103, respectively).
1288 8747721 However, no relationship was found in the levels of CD3+, CD4+ or CD8+ cells in patients possessing either DR3 or DR4.
1289 8750571 CD4 and CD8, gamma/delta TCR bearing T cells and CD45R0 on CD4+ T cells as a marker for memory cells, on TL no differences could be detected between patients with or without anti-TPO.
1290 8750571 Surprisingly, the number of CD3+ TL bearing the IL-2 receptor (CD25) and transferrin receptor (CD71) was not increased.
1291 8752897 IFN-alpha induces autoimmune T cells through the induction of intracellular adhesion molecule-1 and B7.2.
1292 8752897 We demonstrate that the expression of IFN-alpha by the pancreatic beta cells leads to the development of CD4+ T cells that proliferate in the presence of islet Ags.
1293 8752897 We also demonstrate that the pancreatic infiltrating leukocytes in the transgenic mice express increased levels of 87.2 and ICAM-1 and that IFN-alpha can directly induce these two costimulatory molecules on nontransgenic splenic APCs.
1294 8752897 Treatment of the transgenic mice with Abs against these costimulatory molecules demonstrated that B7.2 is essential for the induction of autoreactive T cells, whereas ICAM-1 contributes to but is not essential for the formation of these autoreactive cells.
1295 8752897 As B7.2 and ICAM-1 are able to synergize to provide costimulatory signals to naive T cells under conditions of limiting Ag, we propose that IFN-alpha expression normally contributes to the development of an anti-viral cellular immune response, but that uncontrolled expression of this cytokine will induce autoimmunity.
1296 8756680 The CD4 determinant for downregulation by HIV-1 Nef directly binds to Nef.
1297 8756680 Using heteronuclear NMR spectroscopy, we demonstrate that a 13-residue peptide (MS-QIKRLLSEKKT) from the cytoplasmic tail of CD4 binds to Nef protein.
1298 8756680 This part of CD4 is critical for downregulation of CD4 by HIV-1 Nef [Aiken et al. (1994) Cell 76, 853-864].
1299 8756680 When Nef is complexed to the SH3 domain of Hck tyrosine protein kinase, the peptide binds to the same site on Nef but with slightly higher affinity (Kd approximately 0.5 mM).
1300 8756680 This indicates that the binding of CD4 and Hck SH3 to Nef are two compatible and slightly cooperative events.
1301 8756680 The CD4 determinant for downregulation by HIV-1 Nef directly binds to Nef.
1302 8756680 Using heteronuclear NMR spectroscopy, we demonstrate that a 13-residue peptide (MS-QIKRLLSEKKT) from the cytoplasmic tail of CD4 binds to Nef protein.
1303 8756680 This part of CD4 is critical for downregulation of CD4 by HIV-1 Nef [Aiken et al. (1994) Cell 76, 853-864].
1304 8756680 When Nef is complexed to the SH3 domain of Hck tyrosine protein kinase, the peptide binds to the same site on Nef but with slightly higher affinity (Kd approximately 0.5 mM).
1305 8756680 This indicates that the binding of CD4 and Hck SH3 to Nef are two compatible and slightly cooperative events.
1306 8756680 The CD4 determinant for downregulation by HIV-1 Nef directly binds to Nef.
1307 8756680 Using heteronuclear NMR spectroscopy, we demonstrate that a 13-residue peptide (MS-QIKRLLSEKKT) from the cytoplasmic tail of CD4 binds to Nef protein.
1308 8756680 This part of CD4 is critical for downregulation of CD4 by HIV-1 Nef [Aiken et al. (1994) Cell 76, 853-864].
1309 8756680 When Nef is complexed to the SH3 domain of Hck tyrosine protein kinase, the peptide binds to the same site on Nef but with slightly higher affinity (Kd approximately 0.5 mM).
1310 8756680 This indicates that the binding of CD4 and Hck SH3 to Nef are two compatible and slightly cooperative events.
1311 8756680 The CD4 determinant for downregulation by HIV-1 Nef directly binds to Nef.
1312 8756680 Using heteronuclear NMR spectroscopy, we demonstrate that a 13-residue peptide (MS-QIKRLLSEKKT) from the cytoplasmic tail of CD4 binds to Nef protein.
1313 8756680 This part of CD4 is critical for downregulation of CD4 by HIV-1 Nef [Aiken et al. (1994) Cell 76, 853-864].
1314 8756680 When Nef is complexed to the SH3 domain of Hck tyrosine protein kinase, the peptide binds to the same site on Nef but with slightly higher affinity (Kd approximately 0.5 mM).
1315 8756680 This indicates that the binding of CD4 and Hck SH3 to Nef are two compatible and slightly cooperative events.
1316 8765018 The role of CD8+ T cells in the initiation of insulin-dependent diabetes mellitus.
1317 8765018 While it is generally accepted that T cells are critical for the development of diabetes in the non-obese diabetic (NOD) mouse, the precise functions of the CD4+ and CD8+ subsets remain ill-defined.
1318 8765018 Transfer experiments have provided evidence that CD4+ cells are the disease initiators, provoking massive mononuclear leukocyte infiltration into the pancreatic islets, while CD8+ cells play an effector role, responsible for the final destruction of islet beta cells.
1319 8765018 It was surprising, then, to find that NOD mice carrying a null mutation at the beta 2-microglobulin (beta 2-mu) locus, and thereby lacking major histocompatibility complex class I molecules and CD8+ T cells, developed neither insulitis nor diabetes.
1320 8765018 Transfer experiments indicate that the lack of CD8+ cells during this period somehow alters the phenotype of CD4+ cells, preventing them from expressing their insulitis potential.
1321 8765018 Given that neither the beta 2-mu mutation nor anti-CD8 treatment affect insulitis in a T cell receptor transgenic (tg) mouse strain with a CD4+ T cell repertoire highly skewed for an anti-islet cell reactivity, the most straight-forward interpretation of these observations is that CD8+ cells are required for effective priming and expansion of autoreactive CD4+ cells.
1322 8765018 The role of CD8+ T cells in the initiation of insulin-dependent diabetes mellitus.
1323 8765018 While it is generally accepted that T cells are critical for the development of diabetes in the non-obese diabetic (NOD) mouse, the precise functions of the CD4+ and CD8+ subsets remain ill-defined.
1324 8765018 Transfer experiments have provided evidence that CD4+ cells are the disease initiators, provoking massive mononuclear leukocyte infiltration into the pancreatic islets, while CD8+ cells play an effector role, responsible for the final destruction of islet beta cells.
1325 8765018 It was surprising, then, to find that NOD mice carrying a null mutation at the beta 2-microglobulin (beta 2-mu) locus, and thereby lacking major histocompatibility complex class I molecules and CD8+ T cells, developed neither insulitis nor diabetes.
1326 8765018 Transfer experiments indicate that the lack of CD8+ cells during this period somehow alters the phenotype of CD4+ cells, preventing them from expressing their insulitis potential.
1327 8765018 Given that neither the beta 2-mu mutation nor anti-CD8 treatment affect insulitis in a T cell receptor transgenic (tg) mouse strain with a CD4+ T cell repertoire highly skewed for an anti-islet cell reactivity, the most straight-forward interpretation of these observations is that CD8+ cells are required for effective priming and expansion of autoreactive CD4+ cells.
1328 8765018 The role of CD8+ T cells in the initiation of insulin-dependent diabetes mellitus.
1329 8765018 While it is generally accepted that T cells are critical for the development of diabetes in the non-obese diabetic (NOD) mouse, the precise functions of the CD4+ and CD8+ subsets remain ill-defined.
1330 8765018 Transfer experiments have provided evidence that CD4+ cells are the disease initiators, provoking massive mononuclear leukocyte infiltration into the pancreatic islets, while CD8+ cells play an effector role, responsible for the final destruction of islet beta cells.
1331 8765018 It was surprising, then, to find that NOD mice carrying a null mutation at the beta 2-microglobulin (beta 2-mu) locus, and thereby lacking major histocompatibility complex class I molecules and CD8+ T cells, developed neither insulitis nor diabetes.
1332 8765018 Transfer experiments indicate that the lack of CD8+ cells during this period somehow alters the phenotype of CD4+ cells, preventing them from expressing their insulitis potential.
1333 8765018 Given that neither the beta 2-mu mutation nor anti-CD8 treatment affect insulitis in a T cell receptor transgenic (tg) mouse strain with a CD4+ T cell repertoire highly skewed for an anti-islet cell reactivity, the most straight-forward interpretation of these observations is that CD8+ cells are required for effective priming and expansion of autoreactive CD4+ cells.
1334 8765018 The role of CD8+ T cells in the initiation of insulin-dependent diabetes mellitus.
1335 8765018 While it is generally accepted that T cells are critical for the development of diabetes in the non-obese diabetic (NOD) mouse, the precise functions of the CD4+ and CD8+ subsets remain ill-defined.
1336 8765018 Transfer experiments have provided evidence that CD4+ cells are the disease initiators, provoking massive mononuclear leukocyte infiltration into the pancreatic islets, while CD8+ cells play an effector role, responsible for the final destruction of islet beta cells.
1337 8765018 It was surprising, then, to find that NOD mice carrying a null mutation at the beta 2-microglobulin (beta 2-mu) locus, and thereby lacking major histocompatibility complex class I molecules and CD8+ T cells, developed neither insulitis nor diabetes.
1338 8765018 Transfer experiments indicate that the lack of CD8+ cells during this period somehow alters the phenotype of CD4+ cells, preventing them from expressing their insulitis potential.
1339 8765018 Given that neither the beta 2-mu mutation nor anti-CD8 treatment affect insulitis in a T cell receptor transgenic (tg) mouse strain with a CD4+ T cell repertoire highly skewed for an anti-islet cell reactivity, the most straight-forward interpretation of these observations is that CD8+ cells are required for effective priming and expansion of autoreactive CD4+ cells.
1340 8775551 Twenty-four patients with moderately controlled insulin dependent diabetes with a duration of diabetes ranging from 2 to 10 years as well as 17 control subjects were vaccinated against hepatitis B virus using Gen Hevac B vaccine.
1341 8775551 In diabetic patients the most striking feature was the reduced CD4/CD8 ratio which was significantly lower (P < 0.001) than that of the control group.
1342 8786019 Defective expression of the apoptosis-inducing CD95 (Fas/APO-1) molecule on T and B cells in IDDM.
1343 8786019 To determine whether a defect involving the CD95 receptor is associated with human insulin-dependent diabetes mellitus (IDDM), we have studied the expression of CD95 on peripheral blood mononuclear cells from IDDM patients at different stages of the disease.
1344 8786019 Three-colour flow cytometry and mean fluorescence analysis showed that T and B lymphocytes from newly diagnosed IDDM and patients with long-standing disease, and subjects at high risk of developing the disease were highly defective in CD95 expression (p < 0.001), whereas monocytes from all the groups studied expressed normal amounts of CD95 molecules on their cell surface.
1345 8786019 T-cell subset analysis showed that the impairment of CD95 expression in IDDM patients and high-risk subjects involved both CD3+ CD4+ (p < 0.001) and CD3+ CD8+ cells (p range: < 0.01-0.001), suggesting that this alteration concerns both helper and cytotoxic T cells.
1346 8786019 Moreover, after activation in vitro with anti-CD3 monoclonal antibody, T cells from newly diagnosed IDDM patients maintained a reduced CD95 expression during the entire cell culture period (24-72 h) in comparison to the control population (p < 0.001).
1347 8786019 In conclusion, we found a reduced expression of the apoptosis-inducing CD95 receptor on T and B lymphocytes of individuals with clinical and preclinical IDDM.
1348 8816968 Insulin-dependent diabetes mellitus (IDDM) in the non-obese diabetic (NOD) mouse results from effector T cell-mediated autoimmune processes directed against pancreatic beta cells.
1349 8816968 The clone was found to produce substantial amounts of transforming growth factor beta (TGF-beta), IL-10, and IFN-gamma, but not IL-2 or IL-4, indicating that this T cell clone is not a member of either the classic Th1 or Th2 cell type.
1350 8816968 On the basis of these observations, we suggest that a new type of CD4+ suppressor T cell, NY4.2, by secreting TGF-beta, can prevent effector T cell-mediated beta cell destruction.
1351 8826963 Derived from NOD mice, diabetogenic T-cell lines and clones have for the most part been CD4+ and T-helper 1 (Th1)-like in their cytokine production.
1352 8826963 Some CD8+ cytotoxic clones have also been reported, although these have generally not transferred diabetes in the absence of CD4+ T-cells.
1353 8826963 While many of the T-cell lines and clones described react with islets, isolated islet cells, or islet membrane preparations, others have known antigen specificities, reacting with defined islet cell proteins such as insulin, GAD, and heat shock proteins.
1354 8826963 Derived from NOD mice, diabetogenic T-cell lines and clones have for the most part been CD4+ and T-helper 1 (Th1)-like in their cytokine production.
1355 8826963 Some CD8+ cytotoxic clones have also been reported, although these have generally not transferred diabetes in the absence of CD4+ T-cells.
1356 8826963 While many of the T-cell lines and clones described react with islets, isolated islet cells, or islet membrane preparations, others have known antigen specificities, reacting with defined islet cell proteins such as insulin, GAD, and heat shock proteins.
1357 8826970 Both CD4+ and CD8+ T-cells in syngeneic islet grafts in NOD mice produce interferon-gamma during beta-cell destruction.
1358 8826970 Islet grafts from CFA-injected mice contained fewer CD4+ and CD8+ cells and more B cells; also fewer interferon gamma (IFN-gamma), interleukin-2 (IL-2), and tumor necrosis factor alpha (TNF-alpha)-positive cells and more IL-4 and IL-10 positive cells.
1359 8826970 By performing two-color immunostaining of cell surface antigens and intracellular IFN-gamma, we found that IFN-gamma positive cells in islet grafts from CFA- and PBS-injected mice were approximately equally divided between CD4+ and CD8+ T-cell subsets.
1360 8826970 Also, the frequencies of both CD4+ IFN-gamma + and CD8+ IFN-gamma + cells were decreased in islet grafts from CFA-injected mice.
1361 8826970 These findings suggest that destruction of beta-cells in syngeneic islets transplanted into NOD mice is promoted by cells producing Th1-type cytokines (IFN-gamma, IL-2, and TNF-alpha) and prevented by cells producing TH2-type cytokines (IL-4 and IL-10).
1362 8826970 Furthermore, both CD4+ and CD8+ IFN-gamma-producing T-cells in the islet grafts appear to be involved in beta-cell destruction and diabetes recurrence.
1363 8826970 Both CD4+ and CD8+ T-cells in syngeneic islet grafts in NOD mice produce interferon-gamma during beta-cell destruction.
1364 8826970 Islet grafts from CFA-injected mice contained fewer CD4+ and CD8+ cells and more B cells; also fewer interferon gamma (IFN-gamma), interleukin-2 (IL-2), and tumor necrosis factor alpha (TNF-alpha)-positive cells and more IL-4 and IL-10 positive cells.
1365 8826970 By performing two-color immunostaining of cell surface antigens and intracellular IFN-gamma, we found that IFN-gamma positive cells in islet grafts from CFA- and PBS-injected mice were approximately equally divided between CD4+ and CD8+ T-cell subsets.
1366 8826970 Also, the frequencies of both CD4+ IFN-gamma + and CD8+ IFN-gamma + cells were decreased in islet grafts from CFA-injected mice.
1367 8826970 These findings suggest that destruction of beta-cells in syngeneic islets transplanted into NOD mice is promoted by cells producing Th1-type cytokines (IFN-gamma, IL-2, and TNF-alpha) and prevented by cells producing TH2-type cytokines (IL-4 and IL-10).
1368 8826970 Furthermore, both CD4+ and CD8+ IFN-gamma-producing T-cells in the islet grafts appear to be involved in beta-cell destruction and diabetes recurrence.
1369 8826970 Both CD4+ and CD8+ T-cells in syngeneic islet grafts in NOD mice produce interferon-gamma during beta-cell destruction.
1370 8826970 Islet grafts from CFA-injected mice contained fewer CD4+ and CD8+ cells and more B cells; also fewer interferon gamma (IFN-gamma), interleukin-2 (IL-2), and tumor necrosis factor alpha (TNF-alpha)-positive cells and more IL-4 and IL-10 positive cells.
1371 8826970 By performing two-color immunostaining of cell surface antigens and intracellular IFN-gamma, we found that IFN-gamma positive cells in islet grafts from CFA- and PBS-injected mice were approximately equally divided between CD4+ and CD8+ T-cell subsets.
1372 8826970 Also, the frequencies of both CD4+ IFN-gamma + and CD8+ IFN-gamma + cells were decreased in islet grafts from CFA-injected mice.
1373 8826970 These findings suggest that destruction of beta-cells in syngeneic islets transplanted into NOD mice is promoted by cells producing Th1-type cytokines (IFN-gamma, IL-2, and TNF-alpha) and prevented by cells producing TH2-type cytokines (IL-4 and IL-10).
1374 8826970 Furthermore, both CD4+ and CD8+ IFN-gamma-producing T-cells in the islet grafts appear to be involved in beta-cell destruction and diabetes recurrence.
1375 8826970 Both CD4+ and CD8+ T-cells in syngeneic islet grafts in NOD mice produce interferon-gamma during beta-cell destruction.
1376 8826970 Islet grafts from CFA-injected mice contained fewer CD4+ and CD8+ cells and more B cells; also fewer interferon gamma (IFN-gamma), interleukin-2 (IL-2), and tumor necrosis factor alpha (TNF-alpha)-positive cells and more IL-4 and IL-10 positive cells.
1377 8826970 By performing two-color immunostaining of cell surface antigens and intracellular IFN-gamma, we found that IFN-gamma positive cells in islet grafts from CFA- and PBS-injected mice were approximately equally divided between CD4+ and CD8+ T-cell subsets.
1378 8826970 Also, the frequencies of both CD4+ IFN-gamma + and CD8+ IFN-gamma + cells were decreased in islet grafts from CFA-injected mice.
1379 8826970 These findings suggest that destruction of beta-cells in syngeneic islets transplanted into NOD mice is promoted by cells producing Th1-type cytokines (IFN-gamma, IL-2, and TNF-alpha) and prevented by cells producing TH2-type cytokines (IL-4 and IL-10).
1380 8826970 Furthermore, both CD4+ and CD8+ IFN-gamma-producing T-cells in the islet grafts appear to be involved in beta-cell destruction and diabetes recurrence.
1381 8826970 Both CD4+ and CD8+ T-cells in syngeneic islet grafts in NOD mice produce interferon-gamma during beta-cell destruction.
1382 8826970 Islet grafts from CFA-injected mice contained fewer CD4+ and CD8+ cells and more B cells; also fewer interferon gamma (IFN-gamma), interleukin-2 (IL-2), and tumor necrosis factor alpha (TNF-alpha)-positive cells and more IL-4 and IL-10 positive cells.
1383 8826970 By performing two-color immunostaining of cell surface antigens and intracellular IFN-gamma, we found that IFN-gamma positive cells in islet grafts from CFA- and PBS-injected mice were approximately equally divided between CD4+ and CD8+ T-cell subsets.
1384 8826970 Also, the frequencies of both CD4+ IFN-gamma + and CD8+ IFN-gamma + cells were decreased in islet grafts from CFA-injected mice.
1385 8826970 These findings suggest that destruction of beta-cells in syngeneic islets transplanted into NOD mice is promoted by cells producing Th1-type cytokines (IFN-gamma, IL-2, and TNF-alpha) and prevented by cells producing TH2-type cytokines (IL-4 and IL-10).
1386 8826970 Furthermore, both CD4+ and CD8+ IFN-gamma-producing T-cells in the islet grafts appear to be involved in beta-cell destruction and diabetes recurrence.
1387 8845051 We measured splenocyte and thymocyte subsets by cytofluorometry (CD4+ CD8-, CD4- CD8+, and double-positive thymocytes; Thy1-2+, CD3+, CD4+, and CD8+ spleen cells) and determined splenocyte mitogenesis in response to concanavalin A.
1388 8864825 Most female NOD mice spontaneously develop insulin-dependent diabetes mellitus (IDDM) after the 4th month of age.
1389 8864825 Flow cytometry was used to compare M. avium-infected, HK M. avium inoculated and untreated NOD and NON mice with regard to subpopulations of splenic lymphocytes bearing the surface antigens CD3, CD4, CD8, IgM and B220.
1390 8871671 Expression of a beta2m transgene controlled by the rat insulin promoter (RIP-beta2m) in NODbeta2mnull mice resulted in reconstitution of IFN-gamma-inducible cell surface MHC class I protein on pancreatic beta-cells.
1391 8871671 These studies demonstrate that beta2m and cell surface MHC class I expression on beta-cells are essential for the initiation of diabetes in the NOD mouse and further confirm that efficient progression to diabetes requires both CD4+ and CD8+ T cells.
1392 8878395 RAPA interfered with the maturation of thymocytes to the CD4+CD8+ DP stage, which resulted in a relative increase in TCRalphabeta(-) immature thymocytes, localized in a rim along the outer cortex.
1393 8878395 In the Lewis rat, a normal CD4/CD8 T-cell ratio and an increased Th1/Th2 ratio was observed within the T-cell population.
1394 8878395 The CD4/CD8 T-cell ratio was decreased as a result of a lower number of CD4 T cells; the Th1/Th2 ratio was increased but Th2 remained higher.
1395 8878395 RAPA interfered with the maturation of thymocytes to the CD4+CD8+ DP stage, which resulted in a relative increase in TCRalphabeta(-) immature thymocytes, localized in a rim along the outer cortex.
1396 8878395 In the Lewis rat, a normal CD4/CD8 T-cell ratio and an increased Th1/Th2 ratio was observed within the T-cell population.
1397 8878395 The CD4/CD8 T-cell ratio was decreased as a result of a lower number of CD4 T cells; the Th1/Th2 ratio was increased but Th2 remained higher.
1398 8878395 RAPA interfered with the maturation of thymocytes to the CD4+CD8+ DP stage, which resulted in a relative increase in TCRalphabeta(-) immature thymocytes, localized in a rim along the outer cortex.
1399 8878395 In the Lewis rat, a normal CD4/CD8 T-cell ratio and an increased Th1/Th2 ratio was observed within the T-cell population.
1400 8878395 The CD4/CD8 T-cell ratio was decreased as a result of a lower number of CD4 T cells; the Th1/Th2 ratio was increased but Th2 remained higher.
1401 8878437 Four pancreatic islet-specific CD4+ helper T (Th) 1 (Th1) clones and two Th1 clones transduced with an SRalpha promoter-linked murine IL-10 (mIL-10) cDNA of 2.0-6.0 x 10(6) cells were adoptively transferred to nonobese diabetic (NOD) mice at age 8 d.
1402 8878437 RT-PCR detected the decrease of IFN-gamma mRNA relative to IL-10 mRNA in IL-10-transduced Th1 clones in vitro and also in recipient islets.
1403 8878437 The suppression of diabetes through decreasing IFN-gamma mRNA by the tissue-specific delivery of IL-10 to pancreatic islets with IL-10-transduced Th1 cells affords us the starting basis to develop the gene therapy for autoimmune diabetes.
1404 8882417 Immunoenzyme staining (ABC-technique) and monoclonal antibodies defining CD4, CD8, CD11b, TCR alpha/beta, gamma/delta, V beta 2, V beta 4, V beta 6, V beta 7, V beta 8.1, 2, V beta 10b and V beta 11 were used to examine the infiltrating mononuclear cells (MNC) in salivary glands of NOD mice.
1405 8882417 A predominance of CD4+ T-cells was identified, while a small population of CD8+ cells was found in the salivary gland infiltrates.
1406 8882417 Immunoenzyme staining (ABC-technique) and monoclonal antibodies defining CD4, CD8, CD11b, TCR alpha/beta, gamma/delta, V beta 2, V beta 4, V beta 6, V beta 7, V beta 8.1, 2, V beta 10b and V beta 11 were used to examine the infiltrating mononuclear cells (MNC) in salivary glands of NOD mice.
1407 8882417 A predominance of CD4+ T-cells was identified, while a small population of CD8+ cells was found in the salivary gland infiltrates.
1408 8889212 These findings clearly demonstrate (1) a critical role for CD8 T cells in the acute rejection of pancreatic islet tissue allografts and (2) tissue-specific differences in the participation of CD4 T cells as primary effectors in the rejection reaction.
1409 8889212 Thus, the participation of CD8 and CD4 T cells as primary effectors of graft rejection depends on which class or classes of MHC antigens are constitutively expressed on graft parenchymal cells and are available for recognition.
1410 8889212 These findings clearly demonstrate (1) a critical role for CD8 T cells in the acute rejection of pancreatic islet tissue allografts and (2) tissue-specific differences in the participation of CD4 T cells as primary effectors in the rejection reaction.
1411 8889212 Thus, the participation of CD8 and CD4 T cells as primary effectors of graft rejection depends on which class or classes of MHC antigens are constitutively expressed on graft parenchymal cells and are available for recognition.
1412 8906855 Acceleration of spontaneous diabetes in TCR-beta-transgenic nonobese diabetic mice by beta-cell cytotoxic CD8+ T cells expressing identical endogenous TCR-alpha chains.
1413 8906855 Here we report on the use of single TCR-beta transgenic mice to study the mechanisms that drive the accumulation of pathogenic T cells in the pancreatic islets of nonobese diabetic (NOD) mice, a model for insulin-dependent diabetes mellitus.
1414 8906855 Expression of the V(beta)8.1+ TCR-beta rearrangement of a diabetogenic H-2Kd-restricted beta cell cytotoxic CD8+ T cell (beta-CTL) clone in NOD mice caused a 10-fold increase in the peripheral precursor frequency of beta-CTL and a selective acceleration of the recruitment of CD8+ T cells to the pancreatic islets of prediabetic animals.
1415 8906855 Most islet-derived beta-CTL from diabetic transgenic NOD mice expressed an endogenously-derived TCR-alpha sequence identical to that of the clonotype donating the TCR-beta transgene, and a TCR-alpha-CDR3 sequence homologous to those expressed by most islet-derived beta-CTL from nontransgenic NOD mice.
1416 8906855 TCR-beta transgene expression did not change the peripheral frequency of beta cell-specific CD4+ T cells, the rate at which these cells accumulated in the pancreatic islets, or the incidence of diabetes.
1417 8906855 Taken together, our data indicate that retention of CD8+ and CD4+ T cells in the pancreatic islets of NOD mice is driven by beta cell autoantigens, rather than by local superantigens or non-Ag-specific stimuli, and that beta-CTL are major effectors of beta cell damage in spontaneous insulin-dependent diabetes mellitus.
1418 8906855 Acceleration of spontaneous diabetes in TCR-beta-transgenic nonobese diabetic mice by beta-cell cytotoxic CD8+ T cells expressing identical endogenous TCR-alpha chains.
1419 8906855 Here we report on the use of single TCR-beta transgenic mice to study the mechanisms that drive the accumulation of pathogenic T cells in the pancreatic islets of nonobese diabetic (NOD) mice, a model for insulin-dependent diabetes mellitus.
1420 8906855 Expression of the V(beta)8.1+ TCR-beta rearrangement of a diabetogenic H-2Kd-restricted beta cell cytotoxic CD8+ T cell (beta-CTL) clone in NOD mice caused a 10-fold increase in the peripheral precursor frequency of beta-CTL and a selective acceleration of the recruitment of CD8+ T cells to the pancreatic islets of prediabetic animals.
1421 8906855 Most islet-derived beta-CTL from diabetic transgenic NOD mice expressed an endogenously-derived TCR-alpha sequence identical to that of the clonotype donating the TCR-beta transgene, and a TCR-alpha-CDR3 sequence homologous to those expressed by most islet-derived beta-CTL from nontransgenic NOD mice.
1422 8906855 TCR-beta transgene expression did not change the peripheral frequency of beta cell-specific CD4+ T cells, the rate at which these cells accumulated in the pancreatic islets, or the incidence of diabetes.
1423 8906855 Taken together, our data indicate that retention of CD8+ and CD4+ T cells in the pancreatic islets of NOD mice is driven by beta cell autoantigens, rather than by local superantigens or non-Ag-specific stimuli, and that beta-CTL are major effectors of beta cell damage in spontaneous insulin-dependent diabetes mellitus.
1424 8918687 Mature CD4+ CD8- thymocytes are phenotypically heterogeneous on activation.
1425 8918687 The expression of class II MHC antigens by allogeneically activated thymocytes demonstrated a novel heterogeneity amongst mature CD4+ CD8- thymocytes that could not readily be accounted for in terms of differences in maturity of the cells, in the affinity of the TCR for the stimulating ligands or in the stage in the cell cycle.
1426 8918687 Mature CD4+ CD8- thymocytes are phenotypically heterogeneous on activation.
1427 8918687 The expression of class II MHC antigens by allogeneically activated thymocytes demonstrated a novel heterogeneity amongst mature CD4+ CD8- thymocytes that could not readily be accounted for in terms of differences in maturity of the cells, in the affinity of the TCR for the stimulating ligands or in the stage in the cell cycle.
1428 8920883 To analyze the effects of TNF alpha in insulin-dependent diabetes mellitus (IDDM), we have generated nonobese diabetic (NOD) transgenic mice expressing TNF alpha under the control of the rat insulin II promoter (RIP).
1429 8920883 In transgenic mice, TNF alpha expression on the islets resulted in massive insulitis, composed of CD4+ T cells, CD8+ T cells, and B cells.
1430 8920883 Despite infiltration of considerable number of lymphoid cells in islets, expression of TNF alpha protected NOD mice from IDDM.
1431 8920883 Diabetes was induced however, in the RIP-TNF alpha transgenic mice when CD8+ diabetogenic cloned T cells or splenic cells from diabetic NOD mice were adoptively transferred to these mice.
1432 8921958 CD4+CD8- thymocytes that express L-selectin protect rats from diabetes upon adoptive transfer.
1433 8921958 Further studies have demonstrated that the transfer of CD4+CD8- thymocytes, like that of unfractionated CD4+ peripheral T cells, also protects approximately half of recipients from diabetes suggesting that, as with the peripheral T cells, a functional heterogeneity may exist amongst CD4+CD8- thymocytes.
1434 8921958 In this study, we show that L-selectin is expressed by 50-60% of all CD4+CD8- thymocytes from 6-week-old rats.
1435 8921958 Adoptive transfer of these populations into thymectomized and irradiated rats revealed that the protection from diabetes observed by CD4+CD8- thymocytes was mediated almost entirely by the L-selectin+ subset.
1436 8921958 These data indicate that CD4+CD8- thymocytes must mature to the stage of L-selectin expression, before they can mediate normal T cell function.
1437 8921958 CD4+CD8- thymocytes that express L-selectin protect rats from diabetes upon adoptive transfer.
1438 8921958 Further studies have demonstrated that the transfer of CD4+CD8- thymocytes, like that of unfractionated CD4+ peripheral T cells, also protects approximately half of recipients from diabetes suggesting that, as with the peripheral T cells, a functional heterogeneity may exist amongst CD4+CD8- thymocytes.
1439 8921958 In this study, we show that L-selectin is expressed by 50-60% of all CD4+CD8- thymocytes from 6-week-old rats.
1440 8921958 Adoptive transfer of these populations into thymectomized and irradiated rats revealed that the protection from diabetes observed by CD4+CD8- thymocytes was mediated almost entirely by the L-selectin+ subset.
1441 8921958 These data indicate that CD4+CD8- thymocytes must mature to the stage of L-selectin expression, before they can mediate normal T cell function.
1442 8921958 CD4+CD8- thymocytes that express L-selectin protect rats from diabetes upon adoptive transfer.
1443 8921958 Further studies have demonstrated that the transfer of CD4+CD8- thymocytes, like that of unfractionated CD4+ peripheral T cells, also protects approximately half of recipients from diabetes suggesting that, as with the peripheral T cells, a functional heterogeneity may exist amongst CD4+CD8- thymocytes.
1444 8921958 In this study, we show that L-selectin is expressed by 50-60% of all CD4+CD8- thymocytes from 6-week-old rats.
1445 8921958 Adoptive transfer of these populations into thymectomized and irradiated rats revealed that the protection from diabetes observed by CD4+CD8- thymocytes was mediated almost entirely by the L-selectin+ subset.
1446 8921958 These data indicate that CD4+CD8- thymocytes must mature to the stage of L-selectin expression, before they can mediate normal T cell function.
1447 8921958 CD4+CD8- thymocytes that express L-selectin protect rats from diabetes upon adoptive transfer.
1448 8921958 Further studies have demonstrated that the transfer of CD4+CD8- thymocytes, like that of unfractionated CD4+ peripheral T cells, also protects approximately half of recipients from diabetes suggesting that, as with the peripheral T cells, a functional heterogeneity may exist amongst CD4+CD8- thymocytes.
1449 8921958 In this study, we show that L-selectin is expressed by 50-60% of all CD4+CD8- thymocytes from 6-week-old rats.
1450 8921958 Adoptive transfer of these populations into thymectomized and irradiated rats revealed that the protection from diabetes observed by CD4+CD8- thymocytes was mediated almost entirely by the L-selectin+ subset.
1451 8921958 These data indicate that CD4+CD8- thymocytes must mature to the stage of L-selectin expression, before they can mediate normal T cell function.
1452 8921958 CD4+CD8- thymocytes that express L-selectin protect rats from diabetes upon adoptive transfer.
1453 8921958 Further studies have demonstrated that the transfer of CD4+CD8- thymocytes, like that of unfractionated CD4+ peripheral T cells, also protects approximately half of recipients from diabetes suggesting that, as with the peripheral T cells, a functional heterogeneity may exist amongst CD4+CD8- thymocytes.
1454 8921958 In this study, we show that L-selectin is expressed by 50-60% of all CD4+CD8- thymocytes from 6-week-old rats.
1455 8921958 Adoptive transfer of these populations into thymectomized and irradiated rats revealed that the protection from diabetes observed by CD4+CD8- thymocytes was mediated almost entirely by the L-selectin+ subset.
1456 8921958 These data indicate that CD4+CD8- thymocytes must mature to the stage of L-selectin expression, before they can mediate normal T cell function.
1457 8930185 We tested whether aminoguanidine (AG), a competitive inhibitor of inducible nitric oxide synthase, might block beta cell destruction and prevent insulin-dependent diabetes mellitus in vivo.
1458 8930185 In terms of therapy, life-table analysis indicated the frequency of insulin-dependent diabetes mellitus (6/30 AG-treated vs. 11/31 vehicle-treated, P = .25) and insulitis scores (2.0 +/- 1.1 vs. 2.4 +/- 1.2 in nondiabetic AG- and vehicle-treated mice at 32 wk, respectively, P = .20) were similar in both groups.
1459 8930185 Flow cytometric analysis revealed no quantitative differences in islet infiltrating macrophages, CD4+ or CD8+ T lymphocytes between groups of animals randomly killed at 8, 16 and 32 wk.
1460 8934930 Commonly observed features of these mice include organized lymphocytic foci, composed of CD4+ and CD8+ T-cells, in both the salivary and the lacrimal glands.
1461 8937686 Abnormalities in postthymic T cell development in the BB/W rat model of autoimmune insulin-dependent diabetes mellitus (IDDM) result in part from a lymphopenia (lyp) gene defect.
1462 8937686 These results suggested that, at a minimum, an arrest in maturation of the Thy1+ precursors of RT6+ T cells occurs postthymically in DP rats.
1463 8937686 The results showed that in DP, as compared with DR, rats: 1) 5-fold fewer RTE's are exported from the thymus per 24 hr; 2) more than 80% of the RTE's are CD4+; 3) most of the immediate descendants of RTE's disappear from the peripheral lymphoid tissues within one week after export from the thymus; and 4) few of the descendants of the RTE's that do survive differentiate into RT6+ T cells.
1464 8943570 IL-7 reverses NK1+ T cell-defective IL-4 production in the non-obese diabetic mouse.
1465 8943570 We recently reported that IL-7 preferentially promotes the in vitro expansion of a discrete MHC class I-dependent lymphocyte subset comprising both CD4+ and CD4-CD8- TCR alpha beta + cells bearing several NK cells markers such NK1.1 and Ly-49.
1466 8943570 In the present experiments, the addition of exogenous IL-7 completely restored IL-4 production by anti-TCR alpha beta-stimulated mature (HSA-CD8-) thymocytes in NOD mice.
1467 8943570 A short 2 h preincubation with IL-7 was sufficient to restore both the expression of IL-4 mRNA and IL-4 production capacity.
1468 8943570 This was related to a direct effect on NK1+ thymocytes since: (i) the effect of IL-7 was restricted to the non-mainstream MEL-14- 3G11- TCR alpha beta + subset which mostly concentrates the IL-4-producing capacity and (ii) IL-7 did not restore IL-4 production in class I-deficient mice which lack the NK1+ T cell subset.
1469 8943570 These results were extended in vivo by showing that the IL-7 treatment significantly increased the anti-CD3 triggered IL-4 production by NK1+ T spleen cells.
1470 8949575 A diagnosis of thyroid Langerhans' cell histiocytosis was finally made on the basis of the presence of Birbeck granules and CD1a and CD4 antigen in the thyroid tumour cells.
1471 8953520 The lymphocyte and macrophage profile in the pancreas and spleen of NOD mice: percentage of interleukin-2 and prolactin receptors on immunocompetent cell subsets.
1472 8953520 Using analytical fluorescent cell cytometry we quantitated the percentages of CD4, and CD8 T-cells, B-cells and macrophages and the percentages of these subsets expressing interleukin-2 (IL-2R), prolactin (PRLR) and Hi-intensity PRL (Hi-PRLR) receptors.
1473 8953520 Evaluation of T-splenocytes indicated a 2:1 ratio of CD4 to CD8 T-lymphocytes in the spleen.
1474 8953520 Pancreatic immunocompetent cell subsets expressed lower percentages of IL-2R, PRLR and Hi-PRLR compared to splenocytes.
1475 8953520 The results did not demonstrate any dramatic differences in the immunocompetent cell populations of the spleen or pancreas between male and female animals, however we were able to establish the percentage of immunocompetent cells with IL-2R, PRLR and Hi-PRLR as a reference for future studies.
1476 8953520 The lymphocyte and macrophage profile in the pancreas and spleen of NOD mice: percentage of interleukin-2 and prolactin receptors on immunocompetent cell subsets.
1477 8953520 Using analytical fluorescent cell cytometry we quantitated the percentages of CD4, and CD8 T-cells, B-cells and macrophages and the percentages of these subsets expressing interleukin-2 (IL-2R), prolactin (PRLR) and Hi-intensity PRL (Hi-PRLR) receptors.
1478 8953520 Evaluation of T-splenocytes indicated a 2:1 ratio of CD4 to CD8 T-lymphocytes in the spleen.
1479 8953520 Pancreatic immunocompetent cell subsets expressed lower percentages of IL-2R, PRLR and Hi-PRLR compared to splenocytes.
1480 8953520 The results did not demonstrate any dramatic differences in the immunocompetent cell populations of the spleen or pancreas between male and female animals, however we were able to establish the percentage of immunocompetent cells with IL-2R, PRLR and Hi-PRLR as a reference for future studies.
1481 8976193 Previous studies have shown that the disease is prevented by the intravenous injection of 5 x 10(6) CD4+ CD45RC-TCR alpha beta+ RT6+ peripheral T cells from normal syngeneic donors.
1482 8976193 However, we now report that the CD4+ CD8- population of mature thymocytes is a very potent source of cells, with the capacity to prevent diabetes in our lymphopenic animals.
1483 8976193 Previous studies have shown that the disease is prevented by the intravenous injection of 5 x 10(6) CD4+ CD45RC-TCR alpha beta+ RT6+ peripheral T cells from normal syngeneic donors.
1484 8976193 However, we now report that the CD4+ CD8- population of mature thymocytes is a very potent source of cells, with the capacity to prevent diabetes in our lymphopenic animals.
1485 8985314 The percentage of CD4+ T cells in peripheral blood mononuclear cells was markedly decreased in the 5DHT-treated females compared with those in controls (37.1 +/- 4.8 vs 51.3 +/- 9.3, P < 0.02), whereas no significant differences in the percentage of CD8+ T cells were observed between treated and control female mice.
1486 8990188 This mouse produces CD4+ T cells bearing transgenic T cell receptor but is devoid of CD8+ T cells and B cells.
1487 8994867 The contributions of CD4+ and CD8+ T cells to beta cell destruction are beginning to be understood and this information will probably be of value in the design of intervention strategies for use in human subjects.
1488 9012359 Diabetogenic T-cell clones have been mostly of the CD4+, Th1 phenotype, but CD8+ T cell clones are also capable of transferring disease.
1489 9012359 In some cases, T-cell lines and clones (CD4+ and CD8+) have been found to have protective properties.
1490 9012359 However, there is an increasing number of reports of T cells specific for defined islet proteins, such as insulin and GAD, and some of these lines can induce disease.
1491 9012359 Diabetogenic T-cell clones have been mostly of the CD4+, Th1 phenotype, but CD8+ T cell clones are also capable of transferring disease.
1492 9012359 In some cases, T-cell lines and clones (CD4+ and CD8+) have been found to have protective properties.
1493 9012359 However, there is an increasing number of reports of T cells specific for defined islet proteins, such as insulin and GAD, and some of these lines can induce disease.
1494 9013986 To investigate whether the immunosuppressive neuropeptide calcitonin gene-related peptide (CGRP) was a potential candidate for tissue-specific gene therapy, we engineered nonobese diabetic (NOD) mice to produce CGRP in beta cells by placing the modified calcitonin gene under the control of the rat insulin promoter.
1495 9013986 CGRP inhibits CD4 T cell production of the cytokines that have been implicated in the pathogeny of type I diabetes.
1496 9013986 The production of CGRP by beta cells prevented insulin-dependent diabetes mellitus in male and reduced its incidence by 63% in female mice.
1497 9020334 At the termination of the experiment, recipient peripheral blood lymphocytes (PBL) were characterized by flow cytometry (FACS) for class I, CD4, CD8, RT6.1, and RT6.2, a T cell maturation marker found in WF but not BB rats.
1498 9075796 Association between alphabetaTCR+CD4-CD8- T-cell deficiency and IDDM in NOD/Lt mice.
1499 9114036 Thus, such chimeras regularly show CD4 and CD8 T cell-mediated insulitis and sialitis, in contrast with syngeneic or allogeneic chimeras produced with TE from nonautoimmune strains.
1500 9115575 Lymphocytes from 77 newly diagnosed IDDM patients, 58 IDDM patients with disease duration > 6 months and 30 non-diabetic controls (including patients with several inflammatory conditions) were analyzed for membrane expression of CD4, CD8, CD45RA, CD45RO and CD27 molecules by FACS analysis.
1501 9115575 However, the percentage of CD4+ T cells, and consequently the CD4/CD8 ratio were significantly increased in PBL of recently diagnosed diabetic patients compared to the non-diabetic control group (P < 0.005).
1502 9115575 IDDM patients had a lower percentage of resting memory T cells (CD45RO+ CD27+) than the non-diabetic controls.
1503 9115575 The proportion of CD45RO+ lymphocytes lacking the CD27 molecule ((re)-activated memory cells) was similar in IDDM patients and non-diabetic controls.
1504 9115575 Our findings confirm and extend previous observations that a disturbance in lymphocyte subset distribution is present in patients with IDDM showing an increase in the percentages of circulating CD4 lymphocytes.
1505 9115575 Lymphocytes from 77 newly diagnosed IDDM patients, 58 IDDM patients with disease duration > 6 months and 30 non-diabetic controls (including patients with several inflammatory conditions) were analyzed for membrane expression of CD4, CD8, CD45RA, CD45RO and CD27 molecules by FACS analysis.
1506 9115575 However, the percentage of CD4+ T cells, and consequently the CD4/CD8 ratio were significantly increased in PBL of recently diagnosed diabetic patients compared to the non-diabetic control group (P < 0.005).
1507 9115575 IDDM patients had a lower percentage of resting memory T cells (CD45RO+ CD27+) than the non-diabetic controls.
1508 9115575 The proportion of CD45RO+ lymphocytes lacking the CD27 molecule ((re)-activated memory cells) was similar in IDDM patients and non-diabetic controls.
1509 9115575 Our findings confirm and extend previous observations that a disturbance in lymphocyte subset distribution is present in patients with IDDM showing an increase in the percentages of circulating CD4 lymphocytes.
1510 9115575 Lymphocytes from 77 newly diagnosed IDDM patients, 58 IDDM patients with disease duration > 6 months and 30 non-diabetic controls (including patients with several inflammatory conditions) were analyzed for membrane expression of CD4, CD8, CD45RA, CD45RO and CD27 molecules by FACS analysis.
1511 9115575 However, the percentage of CD4+ T cells, and consequently the CD4/CD8 ratio were significantly increased in PBL of recently diagnosed diabetic patients compared to the non-diabetic control group (P < 0.005).
1512 9115575 IDDM patients had a lower percentage of resting memory T cells (CD45RO+ CD27+) than the non-diabetic controls.
1513 9115575 The proportion of CD45RO+ lymphocytes lacking the CD27 molecule ((re)-activated memory cells) was similar in IDDM patients and non-diabetic controls.
1514 9115575 Our findings confirm and extend previous observations that a disturbance in lymphocyte subset distribution is present in patients with IDDM showing an increase in the percentages of circulating CD4 lymphocytes.
1515 9133542 In both cases, the infiltrate was mainly made of CD4+ cells, with few CD8+ cells.
1516 9156823 An invasion with CD4+ and CD8+ cells started between day 4 and 6 in both groups, progressively increasing until rejection.
1517 9184917 Production of both IFN-gamma and IL-5 by Onchocerca volvulus S1 antigen-specific CD4+ T cells from putatively immune individuals.
1518 9184917 These clones, which are the first generated against a recombinant fllarial antigen, produced both IFN-gamma and IL-5 as well as little IL-4, suggestive of a Th0-like phenotype.
1519 9184917 Induction of both IFN-gamma and IL-5 by S1 suggests that it may trigger macrophage plus eosinophil dependent killing of L3 in vivo.
1520 9191168 Role of CD4+CD8- thymocytes in the prevention of autoimmune diabetes.
1521 9200479 To address this question, we constructed transgenic mice expressing MCP-1 controlled by an insulin promoter.
1522 9200479 These mice developed a chronic insulitic infiltrate composed of F4/80+ monocytes with minor populations of CD4+, CD8+, and B220+ cells.
1523 9200487 Measurement of the macrophage-derived cytokines IL-12, TNF-alpha, and IL-1beta revealed a selective increase of their expression, after KRV infection, in the splenic lymphocytes and the pancreatic islets.
1524 9200487 Measurement of CD4+ T cell-derived cytokines revealed that IL-2 and IFN-gamma cytokine gene expression closely correlates with an elevation of IL-12, but IL-4 and IL-10 do not change.
1525 9200646 Inhibition of diabetes by an insulin-reactive CD4 T-cell clone in the nonobese diabetic mouse.
1526 9200922 Indeed the major epitope for insulin-autoreactive CD4+ T cell was successfully identified by this strategy.
1527 9218748 RIP-LCMV transgenic mice that express the viral glycoprotein (GP) or nucleoprotein (NP) from lymphocytic choriomeningitis virus (LCMV) under control of the rat insulin promoter (RIP) in pancreatic beta-cells develop autoimmune diabetes (IDDM) after infection with LCMV.
1528 9218748 The present study shows that upregulation of MHC class II molecules associated with the attraction/activation of antigen presenting cells (APCs) to the islets occurs as soon as 2 days after LCMV inoculation of transgenic mice, clearly before CD4+ and CD8+ lymphocytes are found entering the islets (days 6 and 7 after LCMV inoculation).
1529 9218754 BCG vaccination prevents insulin-dependent diabetes mellitus (IDDM) in NOD mice after disease acceleration with cyclophosphamide.
1530 9218754 We have previously shown that immunotherapy with complete Freund's adjuvant (CFA) or BCG is highly effective in the prevention of spontaneous insulin-dependent diabetes mellitus (IDDM) and in circumventing the rejection of syngeneic islet grafts in diabetic NOD mice.
1531 9218754 The comprehensive effect of BCG vaccination on cytokine production in Cy-treated mice was to increase IL-4 production and change the IL-4/IFN-gamma ratio in both serum and supernatant of spleen cell cultures.
1532 9218754 We found that BCG-induced protection was associated with increased splenic CD4+CD45 RB(high) T cells.
1533 9218758 Molecular role of TGF-beta, secreted from a new type of CD4+ suppressor T cell, NY4.2, in the prevention of autoimmune IDDM in NOD mice.
1534 9218758 A new type of CD4+ T cell clone (NY4.2) isolated from pancreatic islet-infiltrated lymphocytes of acutely diabetic non-obese diabetic (NOD) mice prevents the development of insulin-dependent diabetes mellitus (IDDM) in NOD mice, as well as the recurrence of autoimmune diabetes in syngeneic islet-transplanted NOD mice.
1535 9218758 This investigation was initiated to determine the molecular role TGF-beta plays in the prevention of autoimmune IDDM by determining its effect on IL-2-induced signal transduction in Con A-activated NOD mouse splenocytes and HT-2 cells.
1536 9218758 Second, we determined whether TGF-beta inhibits the activation of Janus kinases (JAKs), as well as signal transducers and activators of transcription (STAT) proteins, involved in an IL-2-induced signalling pathway that normally leads to the proliferation of T cells.
1537 9218758 We found that TGF-beta inhibited tyrosine phosphorylation of JAK1, JAK3, STAT3 and STAT5 in Con A blasts from NOD splenocytes and HT-2 cells.
1538 9218758 Third, we examined whether TGF-beta inhibits the cooperation between STAT proteins and mitogen-activated protein kinase (MAPK), especially extracellular signal-regulated kinase 2 (ERK2).
1539 9218758 We found that TGF-beta inhibited the association of STAT3 and STAT5 with ERK2 in Con A blasts from NOD splenocytes and HT-2 cells.
1540 9218758 On the basis of these observations, we conclude that TGF-beta may interfere with signal transduction via inhibition of the IL-2-induced JAK/STAT pathway and inhibition of the association of STAT proteins with ERK2 in T cells from NOD splenocytes, resulting in the inhibition of IL-2-dependent T cell proliferation.
1541 9218758 TGF-beta-mediated suppression of T cell activation may be responsible for the prevention of effector T cell-mediated autoimmune IDDM in NOD mice by TGF-beta-producing CD4+ suppressor T cells.
1542 9218758 Molecular role of TGF-beta, secreted from a new type of CD4+ suppressor T cell, NY4.2, in the prevention of autoimmune IDDM in NOD mice.
1543 9218758 A new type of CD4+ T cell clone (NY4.2) isolated from pancreatic islet-infiltrated lymphocytes of acutely diabetic non-obese diabetic (NOD) mice prevents the development of insulin-dependent diabetes mellitus (IDDM) in NOD mice, as well as the recurrence of autoimmune diabetes in syngeneic islet-transplanted NOD mice.
1544 9218758 This investigation was initiated to determine the molecular role TGF-beta plays in the prevention of autoimmune IDDM by determining its effect on IL-2-induced signal transduction in Con A-activated NOD mouse splenocytes and HT-2 cells.
1545 9218758 Second, we determined whether TGF-beta inhibits the activation of Janus kinases (JAKs), as well as signal transducers and activators of transcription (STAT) proteins, involved in an IL-2-induced signalling pathway that normally leads to the proliferation of T cells.
1546 9218758 We found that TGF-beta inhibited tyrosine phosphorylation of JAK1, JAK3, STAT3 and STAT5 in Con A blasts from NOD splenocytes and HT-2 cells.
1547 9218758 Third, we examined whether TGF-beta inhibits the cooperation between STAT proteins and mitogen-activated protein kinase (MAPK), especially extracellular signal-regulated kinase 2 (ERK2).
1548 9218758 We found that TGF-beta inhibited the association of STAT3 and STAT5 with ERK2 in Con A blasts from NOD splenocytes and HT-2 cells.
1549 9218758 On the basis of these observations, we conclude that TGF-beta may interfere with signal transduction via inhibition of the IL-2-induced JAK/STAT pathway and inhibition of the association of STAT proteins with ERK2 in T cells from NOD splenocytes, resulting in the inhibition of IL-2-dependent T cell proliferation.
1550 9218758 TGF-beta-mediated suppression of T cell activation may be responsible for the prevention of effector T cell-mediated autoimmune IDDM in NOD mice by TGF-beta-producing CD4+ suppressor T cells.
1551 9218758 Molecular role of TGF-beta, secreted from a new type of CD4+ suppressor T cell, NY4.2, in the prevention of autoimmune IDDM in NOD mice.
1552 9218758 A new type of CD4+ T cell clone (NY4.2) isolated from pancreatic islet-infiltrated lymphocytes of acutely diabetic non-obese diabetic (NOD) mice prevents the development of insulin-dependent diabetes mellitus (IDDM) in NOD mice, as well as the recurrence of autoimmune diabetes in syngeneic islet-transplanted NOD mice.
1553 9218758 This investigation was initiated to determine the molecular role TGF-beta plays in the prevention of autoimmune IDDM by determining its effect on IL-2-induced signal transduction in Con A-activated NOD mouse splenocytes and HT-2 cells.
1554 9218758 Second, we determined whether TGF-beta inhibits the activation of Janus kinases (JAKs), as well as signal transducers and activators of transcription (STAT) proteins, involved in an IL-2-induced signalling pathway that normally leads to the proliferation of T cells.
1555 9218758 We found that TGF-beta inhibited tyrosine phosphorylation of JAK1, JAK3, STAT3 and STAT5 in Con A blasts from NOD splenocytes and HT-2 cells.
1556 9218758 Third, we examined whether TGF-beta inhibits the cooperation between STAT proteins and mitogen-activated protein kinase (MAPK), especially extracellular signal-regulated kinase 2 (ERK2).
1557 9218758 We found that TGF-beta inhibited the association of STAT3 and STAT5 with ERK2 in Con A blasts from NOD splenocytes and HT-2 cells.
1558 9218758 On the basis of these observations, we conclude that TGF-beta may interfere with signal transduction via inhibition of the IL-2-induced JAK/STAT pathway and inhibition of the association of STAT proteins with ERK2 in T cells from NOD splenocytes, resulting in the inhibition of IL-2-dependent T cell proliferation.
1559 9218758 TGF-beta-mediated suppression of T cell activation may be responsible for the prevention of effector T cell-mediated autoimmune IDDM in NOD mice by TGF-beta-producing CD4+ suppressor T cells.
1560 9221759 Autoimmune diabetes is caused by the CD4(+), T helper 1 (Th1) cell-mediated apoptosis of insulin-producing beta cells.
1561 9221759 Moreover, the Th2-mediated destruction of islet cells was mediated by local interleukin-10 (IL-10) production but not by IL-4.
1562 9223318 Glutamic acid decarboxylase isoform 2 (GAD65; EC 4.1.1.15) has been identified as a key target autoantigen of insulin-dependent diabetes mellitus (IDDM).
1563 9223318 IDDM is genetically associated with the major histocompatibility complex (MHC), and particular alleles from the HLA-DQ and HLA-DR loci contribute to disease.
1564 9223318 We have utilized HLA-DR(alpha1*0101,beta1*0401) (hereafter referred to as DR0401), human CD4, murine class II null triple transgenic mice and recombinant GAD65 to generate T cell hybridomas, and we have used overlapping sets of peptides to map the immunodominant epitopes of this autoantigen.
1565 9223318 Immunodominant GAD65 epitopes defined in transgenic mice correspond to GAD65 regions previously shown to elicit T cell responses specifically in DR0401 IDDM patients, underscoring the validity of this approach.
1566 9275116 After allogeneic co-culture, lymphocyte activation was found by an increased release of the cytokines interferon-gamma, interleukin 2, and macrophage inflammatory protein 2, as well as by an enhanced expression of the interleukin 2 receptor on CD4+ T and CD8+ T cells.
1567 9275116 These changes comprised not only the enhancement of MHC class I and intercellular adhesion molecule 1 but also the induction of MHC class II antigens on pancreatic beta cells.
1568 9294207 With this approach, two peptides were identified that stimulate the beta cell-reactive CD4+ T cell clone 1c10, which was isolated from a newly diagnosed insulin-dependent diabetes mellitus patient.
1569 9304048 PGAI, also called APECED (autoimmune polyendocrinopathy, candidiasis and ectodermal dystrophy), is an autosomal recessive disorder, appearing in childhood and typically characterized by hypoparathyroidism (unusual in PGAII and PGAIII) and adrenal insufficiency.
1570 9304048 In APECED, autoimmune destruction of the pancreatic beta cells with development of insulin-dependent type 1 diabetes is possible, but less frequent than in the other PGAs, especially PGAII.
1571 9304048 In this patient no organo-specific antibodies were detected and the only immunologic disorder was a small decrease of CD3 and CD4/CD8 ratio, both CD4 and CD8 being at the lower normal range.
1572 9314549 Insulitis with infiltration of CD4(+) and CD8(+) T cells occurred similarly in both groups of animals.
1573 9324360 Here we demonstrate that transgenic mice expressing both TNFalpha and the Leishmania major LACK antigen in the pancreas (RIP-TNFalpha/RIP-LACK) exhibit an impaired ability to mount a CD4+ T cell response against LACK.
1574 9324360 In addition, peripheral CD4+ T cells from TCR transgenic mice (TCR-LACK/RIP-TNFalpha/RIP-LACK) produced reduced interleukin-2 but elevated levels of T helper 2 cytokines in response to LACK peptide in vitro.
1575 9324360 Here we demonstrate that transgenic mice expressing both TNFalpha and the Leishmania major LACK antigen in the pancreas (RIP-TNFalpha/RIP-LACK) exhibit an impaired ability to mount a CD4+ T cell response against LACK.
1576 9324360 In addition, peripheral CD4+ T cells from TCR transgenic mice (TCR-LACK/RIP-TNFalpha/RIP-LACK) produced reduced interleukin-2 but elevated levels of T helper 2 cytokines in response to LACK peptide in vitro.
1577 9352596 CD4+ and CD8+ T lymphocytes: clarification of their pathogenic roles in diabetes in the NOD mouse.
1578 9352597 The role of CD4 and CD8 T cells in type I diabetes in the NOD mouse.
1579 9362527 It has been established that insulin-dependent diabetes mellitus (IDDM) in nonobese diabetic (NOD) mice results from a CD4+ and CD8+ T cell-dependent autoimmune process directed against the pancreatic beta cells.
1580 9362527 The precise roles that beta cell-reactive CD8+ and CD4+ T cells play in the disease process, however, remain ill defined.
1581 9362527 Here we have investigated whether naive beta cell-specific CD8+ and CD4+ T cells can spontaneously accumulate in pancreatic islets, differentiate into effector cells, and destroy beta cells in the absence of other T cell specificities.
1582 9362527 We show that while RAG-2(-/-) 4.1-NOD mice, which only bear beta cell-specific CD4+ T cells, develop diabetes as early and as frequently as RAG-2+ 4.1-NOD mice, RAG-2(-/-) 8.3-NOD mice, which only bear beta cell-specific CD8+ T cells, develop diabetes less frequently and significantly later than RAG-2(+) 8.3-NOD mice.
1583 9362527 The monoclonal CD8+ T cells of RAG-2(-/-) 8.3-NOD mice mature properly, proliferate vigorously in response to antigenic stimulation in vitro, and can differentiate into beta cell-cytotoxic T cells in vivo, but do not efficiently accumulate in islets in the absence of a CD4+ T cell-derived signal, which can be provided by splenic CD4+ T cells from nontransgenic NOD mice.
1584 9362527 These results demonstrate that naive beta cell- specific CD8+ and CD4+ T cells can trigger diabetes in the absence of other T or B cell specificities, but suggest that efficient recruitment of naive diabetogenic beta cell-reactive CD8+ T cells to islets requires the assistance of beta cell-reactive CD4+ T cells.
1585 9362527 It has been established that insulin-dependent diabetes mellitus (IDDM) in nonobese diabetic (NOD) mice results from a CD4+ and CD8+ T cell-dependent autoimmune process directed against the pancreatic beta cells.
1586 9362527 The precise roles that beta cell-reactive CD8+ and CD4+ T cells play in the disease process, however, remain ill defined.
1587 9362527 Here we have investigated whether naive beta cell-specific CD8+ and CD4+ T cells can spontaneously accumulate in pancreatic islets, differentiate into effector cells, and destroy beta cells in the absence of other T cell specificities.
1588 9362527 We show that while RAG-2(-/-) 4.1-NOD mice, which only bear beta cell-specific CD4+ T cells, develop diabetes as early and as frequently as RAG-2+ 4.1-NOD mice, RAG-2(-/-) 8.3-NOD mice, which only bear beta cell-specific CD8+ T cells, develop diabetes less frequently and significantly later than RAG-2(+) 8.3-NOD mice.
1589 9362527 The monoclonal CD8+ T cells of RAG-2(-/-) 8.3-NOD mice mature properly, proliferate vigorously in response to antigenic stimulation in vitro, and can differentiate into beta cell-cytotoxic T cells in vivo, but do not efficiently accumulate in islets in the absence of a CD4+ T cell-derived signal, which can be provided by splenic CD4+ T cells from nontransgenic NOD mice.
1590 9362527 These results demonstrate that naive beta cell- specific CD8+ and CD4+ T cells can trigger diabetes in the absence of other T or B cell specificities, but suggest that efficient recruitment of naive diabetogenic beta cell-reactive CD8+ T cells to islets requires the assistance of beta cell-reactive CD4+ T cells.
1591 9362527 It has been established that insulin-dependent diabetes mellitus (IDDM) in nonobese diabetic (NOD) mice results from a CD4+ and CD8+ T cell-dependent autoimmune process directed against the pancreatic beta cells.
1592 9362527 The precise roles that beta cell-reactive CD8+ and CD4+ T cells play in the disease process, however, remain ill defined.
1593 9362527 Here we have investigated whether naive beta cell-specific CD8+ and CD4+ T cells can spontaneously accumulate in pancreatic islets, differentiate into effector cells, and destroy beta cells in the absence of other T cell specificities.
1594 9362527 We show that while RAG-2(-/-) 4.1-NOD mice, which only bear beta cell-specific CD4+ T cells, develop diabetes as early and as frequently as RAG-2+ 4.1-NOD mice, RAG-2(-/-) 8.3-NOD mice, which only bear beta cell-specific CD8+ T cells, develop diabetes less frequently and significantly later than RAG-2(+) 8.3-NOD mice.
1595 9362527 The monoclonal CD8+ T cells of RAG-2(-/-) 8.3-NOD mice mature properly, proliferate vigorously in response to antigenic stimulation in vitro, and can differentiate into beta cell-cytotoxic T cells in vivo, but do not efficiently accumulate in islets in the absence of a CD4+ T cell-derived signal, which can be provided by splenic CD4+ T cells from nontransgenic NOD mice.
1596 9362527 These results demonstrate that naive beta cell- specific CD8+ and CD4+ T cells can trigger diabetes in the absence of other T or B cell specificities, but suggest that efficient recruitment of naive diabetogenic beta cell-reactive CD8+ T cells to islets requires the assistance of beta cell-reactive CD4+ T cells.
1597 9362527 It has been established that insulin-dependent diabetes mellitus (IDDM) in nonobese diabetic (NOD) mice results from a CD4+ and CD8+ T cell-dependent autoimmune process directed against the pancreatic beta cells.
1598 9362527 The precise roles that beta cell-reactive CD8+ and CD4+ T cells play in the disease process, however, remain ill defined.
1599 9362527 Here we have investigated whether naive beta cell-specific CD8+ and CD4+ T cells can spontaneously accumulate in pancreatic islets, differentiate into effector cells, and destroy beta cells in the absence of other T cell specificities.
1600 9362527 We show that while RAG-2(-/-) 4.1-NOD mice, which only bear beta cell-specific CD4+ T cells, develop diabetes as early and as frequently as RAG-2+ 4.1-NOD mice, RAG-2(-/-) 8.3-NOD mice, which only bear beta cell-specific CD8+ T cells, develop diabetes less frequently and significantly later than RAG-2(+) 8.3-NOD mice.
1601 9362527 The monoclonal CD8+ T cells of RAG-2(-/-) 8.3-NOD mice mature properly, proliferate vigorously in response to antigenic stimulation in vitro, and can differentiate into beta cell-cytotoxic T cells in vivo, but do not efficiently accumulate in islets in the absence of a CD4+ T cell-derived signal, which can be provided by splenic CD4+ T cells from nontransgenic NOD mice.
1602 9362527 These results demonstrate that naive beta cell- specific CD8+ and CD4+ T cells can trigger diabetes in the absence of other T or B cell specificities, but suggest that efficient recruitment of naive diabetogenic beta cell-reactive CD8+ T cells to islets requires the assistance of beta cell-reactive CD4+ T cells.
1603 9362527 It has been established that insulin-dependent diabetes mellitus (IDDM) in nonobese diabetic (NOD) mice results from a CD4+ and CD8+ T cell-dependent autoimmune process directed against the pancreatic beta cells.
1604 9362527 The precise roles that beta cell-reactive CD8+ and CD4+ T cells play in the disease process, however, remain ill defined.
1605 9362527 Here we have investigated whether naive beta cell-specific CD8+ and CD4+ T cells can spontaneously accumulate in pancreatic islets, differentiate into effector cells, and destroy beta cells in the absence of other T cell specificities.
1606 9362527 We show that while RAG-2(-/-) 4.1-NOD mice, which only bear beta cell-specific CD4+ T cells, develop diabetes as early and as frequently as RAG-2+ 4.1-NOD mice, RAG-2(-/-) 8.3-NOD mice, which only bear beta cell-specific CD8+ T cells, develop diabetes less frequently and significantly later than RAG-2(+) 8.3-NOD mice.
1607 9362527 The monoclonal CD8+ T cells of RAG-2(-/-) 8.3-NOD mice mature properly, proliferate vigorously in response to antigenic stimulation in vitro, and can differentiate into beta cell-cytotoxic T cells in vivo, but do not efficiently accumulate in islets in the absence of a CD4+ T cell-derived signal, which can be provided by splenic CD4+ T cells from nontransgenic NOD mice.
1608 9362527 These results demonstrate that naive beta cell- specific CD8+ and CD4+ T cells can trigger diabetes in the absence of other T or B cell specificities, but suggest that efficient recruitment of naive diabetogenic beta cell-reactive CD8+ T cells to islets requires the assistance of beta cell-reactive CD4+ T cells.
1609 9362527 It has been established that insulin-dependent diabetes mellitus (IDDM) in nonobese diabetic (NOD) mice results from a CD4+ and CD8+ T cell-dependent autoimmune process directed against the pancreatic beta cells.
1610 9362527 The precise roles that beta cell-reactive CD8+ and CD4+ T cells play in the disease process, however, remain ill defined.
1611 9362527 Here we have investigated whether naive beta cell-specific CD8+ and CD4+ T cells can spontaneously accumulate in pancreatic islets, differentiate into effector cells, and destroy beta cells in the absence of other T cell specificities.
1612 9362527 We show that while RAG-2(-/-) 4.1-NOD mice, which only bear beta cell-specific CD4+ T cells, develop diabetes as early and as frequently as RAG-2+ 4.1-NOD mice, RAG-2(-/-) 8.3-NOD mice, which only bear beta cell-specific CD8+ T cells, develop diabetes less frequently and significantly later than RAG-2(+) 8.3-NOD mice.
1613 9362527 The monoclonal CD8+ T cells of RAG-2(-/-) 8.3-NOD mice mature properly, proliferate vigorously in response to antigenic stimulation in vitro, and can differentiate into beta cell-cytotoxic T cells in vivo, but do not efficiently accumulate in islets in the absence of a CD4+ T cell-derived signal, which can be provided by splenic CD4+ T cells from nontransgenic NOD mice.
1614 9362527 These results demonstrate that naive beta cell- specific CD8+ and CD4+ T cells can trigger diabetes in the absence of other T or B cell specificities, but suggest that efficient recruitment of naive diabetogenic beta cell-reactive CD8+ T cells to islets requires the assistance of beta cell-reactive CD4+ T cells.
1615 9366391 IL-4 prevents insulitis and insulin-dependent diabetes mellitus in nonobese diabetic mice by potentiation of regulatory T helper-2 cell function.
1616 9366391 Beginning at the time of insulitis, nonobese diabetic (NOD) mice demonstrate a thymocyte and peripheral T cell proliferative hyporesponsiveness induced by TCR cross-linking, which is associated with reduced IL-2 and IL-4 secretion.
1617 9366391 We previously reported that NOD CD4+ T cell hyporesponsiveness is reversed completely in vitro by exogenous IL-4, and that administration of IL-4 to NOD mice prevents the onset of insulin-dependent diabetes mellitus (IDDM).
1618 9366391 In the present study, we tested this possibility by analysis of the mechanisms of protection from IDDM afforded by IL-4 treatment in NOD mice.
1619 9366391 We show that IL-4 protects NOD mice from insulitis and IDDM when administered i.p. three times a week for 10 wk beginning at 2 wk of age.
1620 9366391 Thus, IL-4 treatment favors the expansion of regulatory CD4+ Th2 cells in vivo and prevents the onset of insulitis and IDDM mediated by autoreactive Th1 cells.
1621 9366391 IL-4 prevents insulitis and insulin-dependent diabetes mellitus in nonobese diabetic mice by potentiation of regulatory T helper-2 cell function.
1622 9366391 Beginning at the time of insulitis, nonobese diabetic (NOD) mice demonstrate a thymocyte and peripheral T cell proliferative hyporesponsiveness induced by TCR cross-linking, which is associated with reduced IL-2 and IL-4 secretion.
1623 9366391 We previously reported that NOD CD4+ T cell hyporesponsiveness is reversed completely in vitro by exogenous IL-4, and that administration of IL-4 to NOD mice prevents the onset of insulin-dependent diabetes mellitus (IDDM).
1624 9366391 In the present study, we tested this possibility by analysis of the mechanisms of protection from IDDM afforded by IL-4 treatment in NOD mice.
1625 9366391 We show that IL-4 protects NOD mice from insulitis and IDDM when administered i.p. three times a week for 10 wk beginning at 2 wk of age.
1626 9366391 Thus, IL-4 treatment favors the expansion of regulatory CD4+ Th2 cells in vivo and prevents the onset of insulitis and IDDM mediated by autoreactive Th1 cells.
1627 9396776 CD4+ T cell help impairs CD8+ T cell deletion induced by cross-presentation of self-antigens and favors autoimmunity.
1628 9396776 Analysis of the fate of CD8+ T cells indicated that CD4(+) T cell help impaired their deletion.
1629 9396776 CD4+ T cell help impairs CD8+ T cell deletion induced by cross-presentation of self-antigens and favors autoimmunity.
1630 9396776 Analysis of the fate of CD8+ T cells indicated that CD4(+) T cell help impaired their deletion.
1631 9421467 GAD-reactive CD4+ Th1 cells induce diabetes in NOD/SCID mice.
1632 9421467 Although glutamic acid decarboxylase (GAD) has been implicated in IDDM, there is no direct evidence showing GAD-reactive T cells are diabetogenic in vivo.
1633 9421467 Splenocytes from this mouse showed a proliferative response to purified GAD, and were used to generate a CD4+ T cell line, designated 5A, that expresses TCRs encoding Vbeta2 and Vbeta12. 5A T cells exhibit a MHC restricted proliferative response to purified GAD, as well as GAD65 peptide 524-543.
1634 9421467 After antigen-specific stimulation, 5A T cells secrete IFNgamma and TNFalpha/beta, but not IL-4.
1635 9421467 We conclude that GAD injection in young NOD mice may, in some cases, provoke diabetes due to the activation of diabetogenic T cells reactive to GAD65 peptides.
1636 9421467 Our data provide direct evidence that GAD65 autoimmunity may be a critical event in the pathogenesis of IDDM.
1637 9421467 GAD-reactive CD4+ Th1 cells induce diabetes in NOD/SCID mice.
1638 9421467 Although glutamic acid decarboxylase (GAD) has been implicated in IDDM, there is no direct evidence showing GAD-reactive T cells are diabetogenic in vivo.
1639 9421467 Splenocytes from this mouse showed a proliferative response to purified GAD, and were used to generate a CD4+ T cell line, designated 5A, that expresses TCRs encoding Vbeta2 and Vbeta12. 5A T cells exhibit a MHC restricted proliferative response to purified GAD, as well as GAD65 peptide 524-543.
1640 9421467 After antigen-specific stimulation, 5A T cells secrete IFNgamma and TNFalpha/beta, but not IL-4.
1641 9421467 We conclude that GAD injection in young NOD mice may, in some cases, provoke diabetes due to the activation of diabetogenic T cells reactive to GAD65 peptides.
1642 9421467 Our data provide direct evidence that GAD65 autoimmunity may be a critical event in the pathogenesis of IDDM.
1643 9423299 [The relation between diabetes mellitus and IFN-gamma, IL-12 and IL-10 productions by CD4+ alpha beta T cells and monocytes in patients with pulmonary tuberculosis].
1644 9423299 To elucidate the mechanism of susceptibility to tuberculosis infection in patients with diabetes mellitus, we measured IFN-gamma, IL-12 and IL-10 productions by CD4+ alpha beta T cells and autologous monocytes stimulated with live BCG in patients with pulmonary tuberculosis complicated with DM (TB + DM) or without DM (TB) and healthy controls.
1645 9423299 The levels of IFN-gamma and IL-12 production in TB patients were significantly lower than those in the control.
1646 9423299 [The relation between diabetes mellitus and IFN-gamma, IL-12 and IL-10 productions by CD4+ alpha beta T cells and monocytes in patients with pulmonary tuberculosis].
1647 9423299 To elucidate the mechanism of susceptibility to tuberculosis infection in patients with diabetes mellitus, we measured IFN-gamma, IL-12 and IL-10 productions by CD4+ alpha beta T cells and autologous monocytes stimulated with live BCG in patients with pulmonary tuberculosis complicated with DM (TB + DM) or without DM (TB) and healthy controls.
1648 9423299 The levels of IFN-gamma and IL-12 production in TB patients were significantly lower than those in the control.
1649 9432975 Continuous antigenic stimulation in vivo can result in the generation of so-called "anergic" CD4(+) or CD8(+) T cells that fail to proliferate upon antigenic stimulation and fail to develop cytolytic effector functions.
1650 9432975 Furthermore, HA-specific T cells anergized in vivo contain higher levels of interleukin (IL)-4 messenger RNA (mRNA) than naive and recently activated T cells with the same specificity and more than a 100-fold higher levels of IL-10 mRNA.
1651 9435340 Human and mouse major histocompatibility complex class II beta chain alleles associated with predisposition to type I diabetes often encode a non-charged residue at position 57 rather than the negatively charged aspartate residue characteristic of non-susceptible haplotypes.
1652 9435340 Direct evidence for the serine to aspartate substitution at position 57 influencing T-cell selection is found by analysis of peripheral T-cell receptor (TCR) usage and the CD4/CD8 T-cell ratio.
1653 9498651 Moreover, in both NOD and B6 mice, CD4+ T cells were more resistant to PCD induced by IL-2 deprivation than CD8+ cells.
1654 9498651 In relation with this increased resistance to apoptosis, expression of the anti-apoptotic Bcl-x protein was upregulated in activated T cells of NOD mice, most notably after 24 h of IL-2 deprivation.
1655 9519727 Linkage and association between a CD4 gene polymorphism and IDDM in Danish IDDM patients.
1656 9520453 Approximately one-half of Caucasians with newly diagnosed insulin-dependent diabetes mellitus (IDDM) have autoantibodies to insulin, and the majority of those express the HLA-DR4 genotype [Ziegler, R., Alper, C.
1657 9520453 However, it has been difficult to demonstrate T cell proliferative responses to human insulin in IDDM patients [Durinovic-Bello, I., Hummel, M.
1658 9520453 We have immunized transgenic mice expressing the susceptible HLA-DR (alpha1*0101,beta1*0401) (hereafter called DRB1*0401) and human CD4 molecules on a murine major histocompatibility complex class II null background, with human preproinsulin (PPI), proinsulin (PI), and insulin and derived large panels of T cell hybridomas to determine the immunogenic epitopes of these proteins.
1659 9520453 These findings may partly explain why susceptibility to type 1 diabetes is associated with HLA-DR4-positive individuals and why T cell responses to the mature insulin protein are rarely detected in IDDM patients.
1660 9529321 alpha/beta-T cell receptor (TCR)+CD4-CD8- (NKT) thymocytes prevent insulin-dependent diabetes mellitus in nonobese diabetic (NOD)/Lt mice by the influence of interleukin (IL)-4 and/or IL-10.
1661 9529321 We have previously shown that nonobese diabetic (NOD) mice are selectively deficient in alpha/beta-T cell receptor (TCR)+CD4-CD8- NKT cells, a defect that may contribute to their susceptibility to the spontaneous development of insulin-dependent diabetes mellitus (IDDM).
1662 9529321 A single intravenous injection of 10(6) CD4-/lowCD8- or CD4-CD8- thymocytes from female (BALB/c x NOD)F1 donors protected intact NOD mice from the spontaneous onset of clinical IDDM.
1663 9529321 When alpha/beta-TCR+ and alpha/beta-TCR- subsets of CD4-CD8- thymocytes were transferred with diabetogenic splenocytes and compared for their ability to prevent the development of IDDM in irradiated adult recipients, only the alpha/beta-TCR+ population was protective, confirming that NKT cells were responsible for this activity.
1664 9529321 The protective effect in the induced model of IDDM was neutralized by anti-IL-4 and anti-IL-10 monoclonal antibodies in vivo, indicating a role for at least one of these cytokines in NKT cell-mediated protection.
1665 9529321 alpha/beta-T cell receptor (TCR)+CD4-CD8- (NKT) thymocytes prevent insulin-dependent diabetes mellitus in nonobese diabetic (NOD)/Lt mice by the influence of interleukin (IL)-4 and/or IL-10.
1666 9529321 We have previously shown that nonobese diabetic (NOD) mice are selectively deficient in alpha/beta-T cell receptor (TCR)+CD4-CD8- NKT cells, a defect that may contribute to their susceptibility to the spontaneous development of insulin-dependent diabetes mellitus (IDDM).
1667 9529321 A single intravenous injection of 10(6) CD4-/lowCD8- or CD4-CD8- thymocytes from female (BALB/c x NOD)F1 donors protected intact NOD mice from the spontaneous onset of clinical IDDM.
1668 9529321 When alpha/beta-TCR+ and alpha/beta-TCR- subsets of CD4-CD8- thymocytes were transferred with diabetogenic splenocytes and compared for their ability to prevent the development of IDDM in irradiated adult recipients, only the alpha/beta-TCR+ population was protective, confirming that NKT cells were responsible for this activity.
1669 9529321 The protective effect in the induced model of IDDM was neutralized by anti-IL-4 and anti-IL-10 monoclonal antibodies in vivo, indicating a role for at least one of these cytokines in NKT cell-mediated protection.
1670 9541590 The concept that naive CD4+ and CD8+ T cells require co-stimulatory signals for activation and proliferation is well documented.
1671 9544238 Individuals from multiplex insulin-dependent diabetes mellitus (IDDM) families express higher levels of TCRBV2S1 than controls.
1672 9544238 The level of TCRBV2S1 expression in the multiplex families was significantly higher than all the control groups for both the CD4+ and CD8+ T lymphocyte subsets.
1673 9544238 The TCRBV3S1 expression in all the diabetic cohorts was significantly lower than the healthy controls, in the CD4 subset only.
1674 9544238 Individuals from multiplex insulin-dependent diabetes mellitus (IDDM) families express higher levels of TCRBV2S1 than controls.
1675 9544238 The level of TCRBV2S1 expression in the multiplex families was significantly higher than all the control groups for both the CD4+ and CD8+ T lymphocyte subsets.
1676 9544238 The TCRBV3S1 expression in all the diabetic cohorts was significantly lower than the healthy controls, in the CD4 subset only.
1677 9550435 Islet grafts and spleens from TNF-alpha-treated mice at 10 days after islet transplantation contained significantly fewer CD4+ and CD8+ T cells, and significantly decreased mRNA levels of type 1 cytokines (IFN-gamma, IL-2, and TNF-beta) than islet grafts and spleens from control mice.
1678 9550435 Regarding type 2 cytokines, IL-4 mRNA levels were not changed significantly in islet grafts or spleens of TNF-alpha-treated mice, whereas IL-10 mRNA levels were decreased significantly in islet grafts of TNF-alpha-treated mice and not significantly changed in spleens.
1679 9550435 TGF-beta mRNA levels in islet grafts and spleens were similar in TNF-alpha-treated and control mice.
1680 9550435 These results suggest that TNF-alpha partially protects beta cells in syngeneic islet grafts from recurrent autoimmune destruction by reducing CD4+ and CD8+ T cells and down-regulating type 1 cytokines, both systemically and locally in the islet graft.
1681 9550435 Islet grafts and spleens from TNF-alpha-treated mice at 10 days after islet transplantation contained significantly fewer CD4+ and CD8+ T cells, and significantly decreased mRNA levels of type 1 cytokines (IFN-gamma, IL-2, and TNF-beta) than islet grafts and spleens from control mice.
1682 9550435 Regarding type 2 cytokines, IL-4 mRNA levels were not changed significantly in islet grafts or spleens of TNF-alpha-treated mice, whereas IL-10 mRNA levels were decreased significantly in islet grafts of TNF-alpha-treated mice and not significantly changed in spleens.
1683 9550435 TGF-beta mRNA levels in islet grafts and spleens were similar in TNF-alpha-treated and control mice.
1684 9550435 These results suggest that TNF-alpha partially protects beta cells in syngeneic islet grafts from recurrent autoimmune destruction by reducing CD4+ and CD8+ T cells and down-regulating type 1 cytokines, both systemically and locally in the islet graft.
1685 9570528 Sequestration of CD4-associated Lck from the TCR complex may elicit T cell hyporesponsiveness in nonobese diabetic mice.
1686 9570528 The Lck protein tyrosine kinase associates noncovalently with the cytoplasmic domain of CD4.
1687 9570528 Upon ligand engagement of the TCR, CD4-associated Lck is rapidly activated and recruited to the TCR complex.
1688 9570528 Here, we investigated whether differential association of Lck with TCR or CD4 mediates the control of NOD thymocyte hyporesponsiveness.
1689 9570528 We demonstrate that less CD4-associated Lck is recruited to the TCR in activated NOD thymocytes than in control thymocytes.
1690 9570528 This CD4-mediated sequestration of Lck from the TCR correlates with the increased binding of CD4-associated Lck through its Src homology 2 domain to free TCRzeta and CD3gamma epsilon chains on the plasma membrane.
1691 9570528 Sequestration of Lck by CD4 does not occur in activated thymocytes from 3-wk-old NOD mice and is only apparent in thymocytes from NOD mice >5 to 6 wk of age.
1692 9570528 This diminished recruitment of CD4-associated Lck to the TCR is not mediated by an increase in the amount of CD8-associated Lck.
1693 9570528 Thus, impaired recruitment of CD4-associated Lck to the TCR complex may represent an early event that results in deficient coupling of the TCR complex to downstream signaling events and gives rise to NOD thymocyte hyporesponsiveness.
1694 9570528 Sequestration of CD4-associated Lck from the TCR complex may elicit T cell hyporesponsiveness in nonobese diabetic mice.
1695 9570528 The Lck protein tyrosine kinase associates noncovalently with the cytoplasmic domain of CD4.
1696 9570528 Upon ligand engagement of the TCR, CD4-associated Lck is rapidly activated and recruited to the TCR complex.
1697 9570528 Here, we investigated whether differential association of Lck with TCR or CD4 mediates the control of NOD thymocyte hyporesponsiveness.
1698 9570528 We demonstrate that less CD4-associated Lck is recruited to the TCR in activated NOD thymocytes than in control thymocytes.
1699 9570528 This CD4-mediated sequestration of Lck from the TCR correlates with the increased binding of CD4-associated Lck through its Src homology 2 domain to free TCRzeta and CD3gamma epsilon chains on the plasma membrane.
1700 9570528 Sequestration of Lck by CD4 does not occur in activated thymocytes from 3-wk-old NOD mice and is only apparent in thymocytes from NOD mice >5 to 6 wk of age.
1701 9570528 This diminished recruitment of CD4-associated Lck to the TCR is not mediated by an increase in the amount of CD8-associated Lck.
1702 9570528 Thus, impaired recruitment of CD4-associated Lck to the TCR complex may represent an early event that results in deficient coupling of the TCR complex to downstream signaling events and gives rise to NOD thymocyte hyporesponsiveness.
1703 9570528 Sequestration of CD4-associated Lck from the TCR complex may elicit T cell hyporesponsiveness in nonobese diabetic mice.
1704 9570528 The Lck protein tyrosine kinase associates noncovalently with the cytoplasmic domain of CD4.
1705 9570528 Upon ligand engagement of the TCR, CD4-associated Lck is rapidly activated and recruited to the TCR complex.
1706 9570528 Here, we investigated whether differential association of Lck with TCR or CD4 mediates the control of NOD thymocyte hyporesponsiveness.
1707 9570528 We demonstrate that less CD4-associated Lck is recruited to the TCR in activated NOD thymocytes than in control thymocytes.
1708 9570528 This CD4-mediated sequestration of Lck from the TCR correlates with the increased binding of CD4-associated Lck through its Src homology 2 domain to free TCRzeta and CD3gamma epsilon chains on the plasma membrane.
1709 9570528 Sequestration of Lck by CD4 does not occur in activated thymocytes from 3-wk-old NOD mice and is only apparent in thymocytes from NOD mice >5 to 6 wk of age.
1710 9570528 This diminished recruitment of CD4-associated Lck to the TCR is not mediated by an increase in the amount of CD8-associated Lck.
1711 9570528 Thus, impaired recruitment of CD4-associated Lck to the TCR complex may represent an early event that results in deficient coupling of the TCR complex to downstream signaling events and gives rise to NOD thymocyte hyporesponsiveness.
1712 9570528 Sequestration of CD4-associated Lck from the TCR complex may elicit T cell hyporesponsiveness in nonobese diabetic mice.
1713 9570528 The Lck protein tyrosine kinase associates noncovalently with the cytoplasmic domain of CD4.
1714 9570528 Upon ligand engagement of the TCR, CD4-associated Lck is rapidly activated and recruited to the TCR complex.
1715 9570528 Here, we investigated whether differential association of Lck with TCR or CD4 mediates the control of NOD thymocyte hyporesponsiveness.
1716 9570528 We demonstrate that less CD4-associated Lck is recruited to the TCR in activated NOD thymocytes than in control thymocytes.
1717 9570528 This CD4-mediated sequestration of Lck from the TCR correlates with the increased binding of CD4-associated Lck through its Src homology 2 domain to free TCRzeta and CD3gamma epsilon chains on the plasma membrane.
1718 9570528 Sequestration of Lck by CD4 does not occur in activated thymocytes from 3-wk-old NOD mice and is only apparent in thymocytes from NOD mice >5 to 6 wk of age.
1719 9570528 This diminished recruitment of CD4-associated Lck to the TCR is not mediated by an increase in the amount of CD8-associated Lck.
1720 9570528 Thus, impaired recruitment of CD4-associated Lck to the TCR complex may represent an early event that results in deficient coupling of the TCR complex to downstream signaling events and gives rise to NOD thymocyte hyporesponsiveness.
1721 9570528 Sequestration of CD4-associated Lck from the TCR complex may elicit T cell hyporesponsiveness in nonobese diabetic mice.
1722 9570528 The Lck protein tyrosine kinase associates noncovalently with the cytoplasmic domain of CD4.
1723 9570528 Upon ligand engagement of the TCR, CD4-associated Lck is rapidly activated and recruited to the TCR complex.
1724 9570528 Here, we investigated whether differential association of Lck with TCR or CD4 mediates the control of NOD thymocyte hyporesponsiveness.
1725 9570528 We demonstrate that less CD4-associated Lck is recruited to the TCR in activated NOD thymocytes than in control thymocytes.
1726 9570528 This CD4-mediated sequestration of Lck from the TCR correlates with the increased binding of CD4-associated Lck through its Src homology 2 domain to free TCRzeta and CD3gamma epsilon chains on the plasma membrane.
1727 9570528 Sequestration of Lck by CD4 does not occur in activated thymocytes from 3-wk-old NOD mice and is only apparent in thymocytes from NOD mice >5 to 6 wk of age.
1728 9570528 This diminished recruitment of CD4-associated Lck to the TCR is not mediated by an increase in the amount of CD8-associated Lck.
1729 9570528 Thus, impaired recruitment of CD4-associated Lck to the TCR complex may represent an early event that results in deficient coupling of the TCR complex to downstream signaling events and gives rise to NOD thymocyte hyporesponsiveness.
1730 9570528 Sequestration of CD4-associated Lck from the TCR complex may elicit T cell hyporesponsiveness in nonobese diabetic mice.
1731 9570528 The Lck protein tyrosine kinase associates noncovalently with the cytoplasmic domain of CD4.
1732 9570528 Upon ligand engagement of the TCR, CD4-associated Lck is rapidly activated and recruited to the TCR complex.
1733 9570528 Here, we investigated whether differential association of Lck with TCR or CD4 mediates the control of NOD thymocyte hyporesponsiveness.
1734 9570528 We demonstrate that less CD4-associated Lck is recruited to the TCR in activated NOD thymocytes than in control thymocytes.
1735 9570528 This CD4-mediated sequestration of Lck from the TCR correlates with the increased binding of CD4-associated Lck through its Src homology 2 domain to free TCRzeta and CD3gamma epsilon chains on the plasma membrane.
1736 9570528 Sequestration of Lck by CD4 does not occur in activated thymocytes from 3-wk-old NOD mice and is only apparent in thymocytes from NOD mice >5 to 6 wk of age.
1737 9570528 This diminished recruitment of CD4-associated Lck to the TCR is not mediated by an increase in the amount of CD8-associated Lck.
1738 9570528 Thus, impaired recruitment of CD4-associated Lck to the TCR complex may represent an early event that results in deficient coupling of the TCR complex to downstream signaling events and gives rise to NOD thymocyte hyporesponsiveness.
1739 9570528 Sequestration of CD4-associated Lck from the TCR complex may elicit T cell hyporesponsiveness in nonobese diabetic mice.
1740 9570528 The Lck protein tyrosine kinase associates noncovalently with the cytoplasmic domain of CD4.
1741 9570528 Upon ligand engagement of the TCR, CD4-associated Lck is rapidly activated and recruited to the TCR complex.
1742 9570528 Here, we investigated whether differential association of Lck with TCR or CD4 mediates the control of NOD thymocyte hyporesponsiveness.
1743 9570528 We demonstrate that less CD4-associated Lck is recruited to the TCR in activated NOD thymocytes than in control thymocytes.
1744 9570528 This CD4-mediated sequestration of Lck from the TCR correlates with the increased binding of CD4-associated Lck through its Src homology 2 domain to free TCRzeta and CD3gamma epsilon chains on the plasma membrane.
1745 9570528 Sequestration of Lck by CD4 does not occur in activated thymocytes from 3-wk-old NOD mice and is only apparent in thymocytes from NOD mice >5 to 6 wk of age.
1746 9570528 This diminished recruitment of CD4-associated Lck to the TCR is not mediated by an increase in the amount of CD8-associated Lck.
1747 9570528 Thus, impaired recruitment of CD4-associated Lck to the TCR complex may represent an early event that results in deficient coupling of the TCR complex to downstream signaling events and gives rise to NOD thymocyte hyporesponsiveness.
1748 9570528 Sequestration of CD4-associated Lck from the TCR complex may elicit T cell hyporesponsiveness in nonobese diabetic mice.
1749 9570528 The Lck protein tyrosine kinase associates noncovalently with the cytoplasmic domain of CD4.
1750 9570528 Upon ligand engagement of the TCR, CD4-associated Lck is rapidly activated and recruited to the TCR complex.
1751 9570528 Here, we investigated whether differential association of Lck with TCR or CD4 mediates the control of NOD thymocyte hyporesponsiveness.
1752 9570528 We demonstrate that less CD4-associated Lck is recruited to the TCR in activated NOD thymocytes than in control thymocytes.
1753 9570528 This CD4-mediated sequestration of Lck from the TCR correlates with the increased binding of CD4-associated Lck through its Src homology 2 domain to free TCRzeta and CD3gamma epsilon chains on the plasma membrane.
1754 9570528 Sequestration of Lck by CD4 does not occur in activated thymocytes from 3-wk-old NOD mice and is only apparent in thymocytes from NOD mice >5 to 6 wk of age.
1755 9570528 This diminished recruitment of CD4-associated Lck to the TCR is not mediated by an increase in the amount of CD8-associated Lck.
1756 9570528 Thus, impaired recruitment of CD4-associated Lck to the TCR complex may represent an early event that results in deficient coupling of the TCR complex to downstream signaling events and gives rise to NOD thymocyte hyporesponsiveness.
1757 9570528 Sequestration of CD4-associated Lck from the TCR complex may elicit T cell hyporesponsiveness in nonobese diabetic mice.
1758 9570528 The Lck protein tyrosine kinase associates noncovalently with the cytoplasmic domain of CD4.
1759 9570528 Upon ligand engagement of the TCR, CD4-associated Lck is rapidly activated and recruited to the TCR complex.
1760 9570528 Here, we investigated whether differential association of Lck with TCR or CD4 mediates the control of NOD thymocyte hyporesponsiveness.
1761 9570528 We demonstrate that less CD4-associated Lck is recruited to the TCR in activated NOD thymocytes than in control thymocytes.
1762 9570528 This CD4-mediated sequestration of Lck from the TCR correlates with the increased binding of CD4-associated Lck through its Src homology 2 domain to free TCRzeta and CD3gamma epsilon chains on the plasma membrane.
1763 9570528 Sequestration of Lck by CD4 does not occur in activated thymocytes from 3-wk-old NOD mice and is only apparent in thymocytes from NOD mice >5 to 6 wk of age.
1764 9570528 This diminished recruitment of CD4-associated Lck to the TCR is not mediated by an increase in the amount of CD8-associated Lck.
1765 9570528 Thus, impaired recruitment of CD4-associated Lck to the TCR complex may represent an early event that results in deficient coupling of the TCR complex to downstream signaling events and gives rise to NOD thymocyte hyporesponsiveness.
1766 9576014 Oral administration of insulin to NOD mice suppresses or delays the onset of diabetes by skewing the response toward CD4+ Th2 cells and TGF-beta producing cells.
1767 9576014 When cytokine profiles were examined, feeding led to a predominance of IL-10 and TGF-beta production.
1768 9576014 Furthermore, feeding SEA in combination with insulin B-chain augmented the level of IL-10 production to insulin.
1769 9576014 T-cell lines established from SEA-fed and -immunized mice secreted IL-4 and IL-10 cytokines whereas the T-cell lines from control-fed mice immunized with SEA secreted predominantly IL-2 and IFN-gamma.
1770 9576014 These results demonstrate that orally administered insulin can induce regulatory T-cells secreting IL-4, IL-10, and TGF-beta and that Th2 responses to oral insulin could be augmented in a synergistic way by feeding SEA and insulin B-chain together.
1771 9580038 We have found that patients with mental anorexia or bulimia present a significant decrease of leucocytes, lymphocytes, CD2 and CD4.
1772 9583742 Insulin-dependent diabetes mellitus (IDDM) is caused by the progressive autoimmune destruction of insulin-producing pancreatic beta cells.
1773 9583742 The presentation of beta cell-specific autoantigens by macrophages and/or dendritic cells to CD4+ T helper cells, in association with MHC class II molecules, is considered the initial step in the development of autoimmune IDDM.
1774 9583742 The CD4+ T cells secrete IFN-gamma and IL-2.
1775 9583742 IFN-gamma activates other resting macrophages, which, in turn, release cytokines, such as IL-1beta, TNF-alpha, and free radicals, which are toxic to beta cells.
1776 9583742 During this process, IL-2 and other cytokines induce the migration of CD8+ peripheral T cells to the inflamed islets, perhaps by inducing the expression of a specific homing receptor.
1777 9583742 The precytotoxic CD8+ T cells that bear beta cell-specific autoantigen receptors differentiate into cytotoxic effector T cells upon recognition of the beta cell-specific peptide bound to MHC class I molecules in the presence of beta cell-specific CD4+ T helper cells.
1778 9583742 In this way, macrophages, CD4+ T cells, and CD8+ T cells synergistically destroy beta cells, resulting in the onset of autoimmune IDDM.
1779 9583742 Insulin-dependent diabetes mellitus (IDDM) is caused by the progressive autoimmune destruction of insulin-producing pancreatic beta cells.
1780 9583742 The presentation of beta cell-specific autoantigens by macrophages and/or dendritic cells to CD4+ T helper cells, in association with MHC class II molecules, is considered the initial step in the development of autoimmune IDDM.
1781 9583742 The CD4+ T cells secrete IFN-gamma and IL-2.
1782 9583742 IFN-gamma activates other resting macrophages, which, in turn, release cytokines, such as IL-1beta, TNF-alpha, and free radicals, which are toxic to beta cells.
1783 9583742 During this process, IL-2 and other cytokines induce the migration of CD8+ peripheral T cells to the inflamed islets, perhaps by inducing the expression of a specific homing receptor.
1784 9583742 The precytotoxic CD8+ T cells that bear beta cell-specific autoantigen receptors differentiate into cytotoxic effector T cells upon recognition of the beta cell-specific peptide bound to MHC class I molecules in the presence of beta cell-specific CD4+ T helper cells.
1785 9583742 In this way, macrophages, CD4+ T cells, and CD8+ T cells synergistically destroy beta cells, resulting in the onset of autoimmune IDDM.
1786 9583742 Insulin-dependent diabetes mellitus (IDDM) is caused by the progressive autoimmune destruction of insulin-producing pancreatic beta cells.
1787 9583742 The presentation of beta cell-specific autoantigens by macrophages and/or dendritic cells to CD4+ T helper cells, in association with MHC class II molecules, is considered the initial step in the development of autoimmune IDDM.
1788 9583742 The CD4+ T cells secrete IFN-gamma and IL-2.
1789 9583742 IFN-gamma activates other resting macrophages, which, in turn, release cytokines, such as IL-1beta, TNF-alpha, and free radicals, which are toxic to beta cells.
1790 9583742 During this process, IL-2 and other cytokines induce the migration of CD8+ peripheral T cells to the inflamed islets, perhaps by inducing the expression of a specific homing receptor.
1791 9583742 The precytotoxic CD8+ T cells that bear beta cell-specific autoantigen receptors differentiate into cytotoxic effector T cells upon recognition of the beta cell-specific peptide bound to MHC class I molecules in the presence of beta cell-specific CD4+ T helper cells.
1792 9583742 In this way, macrophages, CD4+ T cells, and CD8+ T cells synergistically destroy beta cells, resulting in the onset of autoimmune IDDM.
1793 9583742 Insulin-dependent diabetes mellitus (IDDM) is caused by the progressive autoimmune destruction of insulin-producing pancreatic beta cells.
1794 9583742 The presentation of beta cell-specific autoantigens by macrophages and/or dendritic cells to CD4+ T helper cells, in association with MHC class II molecules, is considered the initial step in the development of autoimmune IDDM.
1795 9583742 The CD4+ T cells secrete IFN-gamma and IL-2.
1796 9583742 IFN-gamma activates other resting macrophages, which, in turn, release cytokines, such as IL-1beta, TNF-alpha, and free radicals, which are toxic to beta cells.
1797 9583742 During this process, IL-2 and other cytokines induce the migration of CD8+ peripheral T cells to the inflamed islets, perhaps by inducing the expression of a specific homing receptor.
1798 9583742 The precytotoxic CD8+ T cells that bear beta cell-specific autoantigen receptors differentiate into cytotoxic effector T cells upon recognition of the beta cell-specific peptide bound to MHC class I molecules in the presence of beta cell-specific CD4+ T helper cells.
1799 9583742 In this way, macrophages, CD4+ T cells, and CD8+ T cells synergistically destroy beta cells, resulting in the onset of autoimmune IDDM.
1800 9604865 IDDM is a T-cell-mediated autoimmune disease in which the insulin-producing beta-cells are destroyed.
1801 9604865 Furthermore, suppression of the diabetogenic response is mediated by the induction of GAD65-specific CD4+ regulatory T-cells.
1802 9616216 Long-term survival of skin allografts induced by donor splenocytes and anti-CD154 antibody in thymectomized mice requires CD4(+) T cells, interferon-gamma, and CTLA4.
1803 9616216 (c) Induction of skin allograft acceptance initially depended on the presence of IFN-gamma, CTLA4, and CD4(+) T cells.
1804 9616216 Addition of anti-CTLA4 or anti-IFN-gamma mAb to the protocol was associated with prompt graft rejection, whereas anti-IL-4 mAb had no effect.
1805 9616216 Long-term survival of skin allografts induced by donor splenocytes and anti-CD154 antibody in thymectomized mice requires CD4(+) T cells, interferon-gamma, and CTLA4.
1806 9616216 (c) Induction of skin allograft acceptance initially depended on the presence of IFN-gamma, CTLA4, and CD4(+) T cells.
1807 9616216 Addition of anti-CTLA4 or anti-IFN-gamma mAb to the protocol was associated with prompt graft rejection, whereas anti-IL-4 mAb had no effect.
1808 9619488 CD4+ T cells may be assigned a functional status (Th1 or Th2) according to the cytokines they produce including IL-2, IFN-gamma and IL-4.
1809 9625758 The pancreatic islet infiltrate in diabetic mice consists of CD8 T cells, CD4 T cells, and B cells, similar to diabetic nontransgenic NOD mice.
1810 9625758 To elucidate the relative importance of each of the subsets of cells, the NOD-rat insulin promoter (RIP)-B7-1 animals were crossed with NOD.beta2microglobulin -/- mice which lack major histocompatibility complex class I molecules and are deficient in peripheral CD8 T cells, NOD.CD4 -/- mice which lack T cells expressing CD4, and NOD.muMT -/- mice which lack B220-positive B cells.
1811 9625758 These experiments showed that both CD4 and CD8 T cells were necessary for the accelerated onset of diabetes, but that B cells, which are needed for diabetes to occur in normal NOD mice, are not required.
1812 9625758 The pancreatic islet infiltrate in diabetic mice consists of CD8 T cells, CD4 T cells, and B cells, similar to diabetic nontransgenic NOD mice.
1813 9625758 To elucidate the relative importance of each of the subsets of cells, the NOD-rat insulin promoter (RIP)-B7-1 animals were crossed with NOD.beta2microglobulin -/- mice which lack major histocompatibility complex class I molecules and are deficient in peripheral CD8 T cells, NOD.CD4 -/- mice which lack T cells expressing CD4, and NOD.muMT -/- mice which lack B220-positive B cells.
1814 9625758 These experiments showed that both CD4 and CD8 T cells were necessary for the accelerated onset of diabetes, but that B cells, which are needed for diabetes to occur in normal NOD mice, are not required.
1815 9625758 The pancreatic islet infiltrate in diabetic mice consists of CD8 T cells, CD4 T cells, and B cells, similar to diabetic nontransgenic NOD mice.
1816 9625758 To elucidate the relative importance of each of the subsets of cells, the NOD-rat insulin promoter (RIP)-B7-1 animals were crossed with NOD.beta2microglobulin -/- mice which lack major histocompatibility complex class I molecules and are deficient in peripheral CD8 T cells, NOD.CD4 -/- mice which lack T cells expressing CD4, and NOD.muMT -/- mice which lack B220-positive B cells.
1817 9625758 These experiments showed that both CD4 and CD8 T cells were necessary for the accelerated onset of diabetes, but that B cells, which are needed for diabetes to occur in normal NOD mice, are not required.
1818 9626161 Increased CD69 and human leukocyte antigen-DR expression on T lymphocytes in insulin-dependent diabetes mellitus of long standing.
1819 9626161 To better define prevailing activation of circulating T cell subsets in insulin-dependent diabetes mellitus (IDDM) of recent onset (DM; n = 31; median age +/- SD, 28 +/- 6.9 yr) and of long standing (DML; n = 27; age, 33 +/- 10.4 yr; median duration of disease, 105 months), CD4+ and CD8+ T cells were analyzed to determine their naive and memory subsets as well as their expression of human leukocyte antigen (HLA)-DR, interleukin-2 receptor alpha-chain (CD25), and CD69 by three-color flow cytometry.
1820 9626161 No deviation was seen in either IDDM group compared to HS in CD25 expression on CD4+ or CD8+ cells or in their CD45RA+ or CD45RA- subsets.
1821 9626161 CD69 expression did not differ between IDDM and HS, but differed between DML (CD4+, CD8+, and CD45RA- CD4+) and DM only.
1822 9626161 In conclusion, our data demonstrate that HLA-DR expression in IDDM is restricted to memory cells (CD45RA-) among CD4+ cells in DML and is more markedly confined to naive (CD45RA+) than to memory CD8+ cells, whereas the early activation antigen CD69 is more readily expressed in DML than in DM.
1823 9626161 Increased CD69 and human leukocyte antigen-DR expression on T lymphocytes in insulin-dependent diabetes mellitus of long standing.
1824 9626161 To better define prevailing activation of circulating T cell subsets in insulin-dependent diabetes mellitus (IDDM) of recent onset (DM; n = 31; median age +/- SD, 28 +/- 6.9 yr) and of long standing (DML; n = 27; age, 33 +/- 10.4 yr; median duration of disease, 105 months), CD4+ and CD8+ T cells were analyzed to determine their naive and memory subsets as well as their expression of human leukocyte antigen (HLA)-DR, interleukin-2 receptor alpha-chain (CD25), and CD69 by three-color flow cytometry.
1825 9626161 No deviation was seen in either IDDM group compared to HS in CD25 expression on CD4+ or CD8+ cells or in their CD45RA+ or CD45RA- subsets.
1826 9626161 CD69 expression did not differ between IDDM and HS, but differed between DML (CD4+, CD8+, and CD45RA- CD4+) and DM only.
1827 9626161 In conclusion, our data demonstrate that HLA-DR expression in IDDM is restricted to memory cells (CD45RA-) among CD4+ cells in DML and is more markedly confined to naive (CD45RA+) than to memory CD8+ cells, whereas the early activation antigen CD69 is more readily expressed in DML than in DM.
1828 9626161 Increased CD69 and human leukocyte antigen-DR expression on T lymphocytes in insulin-dependent diabetes mellitus of long standing.
1829 9626161 To better define prevailing activation of circulating T cell subsets in insulin-dependent diabetes mellitus (IDDM) of recent onset (DM; n = 31; median age +/- SD, 28 +/- 6.9 yr) and of long standing (DML; n = 27; age, 33 +/- 10.4 yr; median duration of disease, 105 months), CD4+ and CD8+ T cells were analyzed to determine their naive and memory subsets as well as their expression of human leukocyte antigen (HLA)-DR, interleukin-2 receptor alpha-chain (CD25), and CD69 by three-color flow cytometry.
1830 9626161 No deviation was seen in either IDDM group compared to HS in CD25 expression on CD4+ or CD8+ cells or in their CD45RA+ or CD45RA- subsets.
1831 9626161 CD69 expression did not differ between IDDM and HS, but differed between DML (CD4+, CD8+, and CD45RA- CD4+) and DM only.
1832 9626161 In conclusion, our data demonstrate that HLA-DR expression in IDDM is restricted to memory cells (CD45RA-) among CD4+ cells in DML and is more markedly confined to naive (CD45RA+) than to memory CD8+ cells, whereas the early activation antigen CD69 is more readily expressed in DML than in DM.
1833 9626161 Increased CD69 and human leukocyte antigen-DR expression on T lymphocytes in insulin-dependent diabetes mellitus of long standing.
1834 9626161 To better define prevailing activation of circulating T cell subsets in insulin-dependent diabetes mellitus (IDDM) of recent onset (DM; n = 31; median age +/- SD, 28 +/- 6.9 yr) and of long standing (DML; n = 27; age, 33 +/- 10.4 yr; median duration of disease, 105 months), CD4+ and CD8+ T cells were analyzed to determine their naive and memory subsets as well as their expression of human leukocyte antigen (HLA)-DR, interleukin-2 receptor alpha-chain (CD25), and CD69 by three-color flow cytometry.
1835 9626161 No deviation was seen in either IDDM group compared to HS in CD25 expression on CD4+ or CD8+ cells or in their CD45RA+ or CD45RA- subsets.
1836 9626161 CD69 expression did not differ between IDDM and HS, but differed between DML (CD4+, CD8+, and CD45RA- CD4+) and DM only.
1837 9626161 In conclusion, our data demonstrate that HLA-DR expression in IDDM is restricted to memory cells (CD45RA-) among CD4+ cells in DML and is more markedly confined to naive (CD45RA+) than to memory CD8+ cells, whereas the early activation antigen CD69 is more readily expressed in DML than in DM.
1838 9630837 Most importantly, treatment induced higher IFN-gamma/IL-4 ratios among CD4 T cells, suggesting a strong shift toward Th1 development, perhaps through direct effects on patterns of gene expression in CD4 T cells.
1839 9637485 Consequently, there is a 10-fold reduction in the number of CD4+ and CD8+ T cells in secondary lymphoid organs.
1840 9647438 Serial frozen sections of grafts and controls were stained by immunoperoxidase for rat MAC-1, class II MHC, CD2, CD4, CD8, B-cells, VLA-4, LFA-1, L-selectin, ICAM-1, and VCAM-1.
1841 9647438 Third, the second wave of lymphocytes arrived from the renal parenchyma to form a dense band at the graft-kidney interface and around grafts by days 4 and 6 (allo >>> iso); CD4+ cells vastly outnumbered CD8+ cells, with CD4+ cells being mobilized first and from interstitial vessels throughout the entire kidney.
1842 9647438 Large numbers of L-selectin+, VLA-4+, and LFA-1+ cells were seen in the infiltrates with the most intensely staining cells being intravascular.
1843 9647438 Endothelial staining for ICAM-1 and VCAM-1 was prominent throughout.
1844 9647438 Both class II MHC and ICAM-1 expression were induced on renal tubular epithelial cells, but neither was found on islet parenchymal cells.
1845 9647438 Serial frozen sections of grafts and controls were stained by immunoperoxidase for rat MAC-1, class II MHC, CD2, CD4, CD8, B-cells, VLA-4, LFA-1, L-selectin, ICAM-1, and VCAM-1.
1846 9647438 Third, the second wave of lymphocytes arrived from the renal parenchyma to form a dense band at the graft-kidney interface and around grafts by days 4 and 6 (allo >>> iso); CD4+ cells vastly outnumbered CD8+ cells, with CD4+ cells being mobilized first and from interstitial vessels throughout the entire kidney.
1847 9647438 Large numbers of L-selectin+, VLA-4+, and LFA-1+ cells were seen in the infiltrates with the most intensely staining cells being intravascular.
1848 9647438 Endothelial staining for ICAM-1 and VCAM-1 was prominent throughout.
1849 9647438 Both class II MHC and ICAM-1 expression were induced on renal tubular epithelial cells, but neither was found on islet parenchymal cells.
1850 9648825 Fluorescence-activated cell sorter analysis of thymocyte subsets revealed marked differences, especially in CD4+CD8+ and CD4+ cells.
1851 9650096 Cloned T cells from a recent onset IDDM patient reactive with insulin B-chain.
1852 9650096 Insulin-dependent diabetes mellitus (IDDM) results from selective autoimmune destruction of insulin producing beta-cells.
1853 9650096 T-cell reactivity and autoantibodies to several islet proteins such as insulin, GAD and IA-2 are associated with IDDM in mice and men.
1854 9650096 We have isolated and characterized a human insulin-specific T-cell clone that was derived from peripheral blood of a newly diagnosed IDDM patient.
1855 9650096 Functionally, the human insulin-specific CD4+ T cells displayed a Th1/0 like cytokine profile and were restricted by HLA-DR.
1856 9650096 Our results indicate that human clonal T cells isolated from a recent onset IDDM patient recognize an epitope overlapping with the insulin B-chain region that is immunodominant and potentially therapeutic in NOD mice.
1857 9650096 This observation may be useful in studying the role of insulin-specific T cells in IDDM, and may eventually help to establish peptide-based immunotherapies in IDDM.
1858 9679667 Correlation studies between cytokines expressed in islets and autoimmune diabetes development in NOD mice and BB rats have demonstrated that beta-cell destructive insulitis is associated with increased expression of proinflammatory cytokines (IL-1, TNF alpha, and IFN alpha) and type 1 cytokines (IFN gamma, TNF beta, IL-2 and IL-12), whereas non-destructive (benign) insulitis is associated with increased expression of type 2 cytokines (IL-4 and IL-10) and the type 3 cytokine (TGF beta).
1859 9679667 Cytokines (IL-1, TNF alpha, TNF beta and IFN gamma) may be directly cytotoxic to beta-cells by inducing nitric oxide and oxygen free radicals in the beta-cells.
1860 9679667 In addition, cytokines may sensitize beta-cells to T-cell-mediated cytotoxicity in vivo by upregulating MHC class I expression on the beta-cells (an action of IFN gamma), and inducing Fas (CD95) expression on beta-cells (actions of IL-1, and possibly TNF alpha and IFN gamma).
1861 9679667 Transgenic expression of cytokines in beta-cells of non-diabetes-prone mice and NOD mice has suggested pathogenic roles for IFN alpha, IFN gamma, IL-2 and IL-10 in insulin-dependent diabetes mellitus (IDDM) development, and protective roles for IL-4, IL-6 and TNF alpha.
1862 9679667 Islet-reactive CD4+ T-cell lines and clones that adoptively transfer IDDM into young NOD mice have a Th1 phenotype (IFN gamma-producing), but other islet-specific Th1 clones that produce TGF beta can adoptively transfer protection against IDDM in NOD mice.
1863 9679667 NOD mice with targeted deletions of IL-12 and IFN gamma genes still develop IDDM, albeit delayed and slightly less often.
1864 9679667 In contrast, post-natal deletions of IL-12 and IFN gamma, also IL-1, TNF alpha, IL-2, and IL-6--by systemic administrations of neutralizing antibodies, soluble receptors and receptor antagonists, and receptor-targeted cytotoxic drugs--significantly decrease IDDM incidence in NOD mice and/or BB rats.
1865 9679667 These cytokine deletion studies have provided the best evidence for pathologic roles for proinflammatory cytokines (IL-1, TNF alpha, and IL-6) and type 1 cytokines (IFN gamma, IL-2 and IL-12) in IDDM development.
1866 9691086 Paracrine effect of transforming growth factor-beta1 (TGF-beta1) on autoimmune insulitis and diabetes was studied by transgenic production of the active form of porcine TGF-beta1 (pTGF-beta1) in pancreatic islet (islet) alpha cells in nonobese diabetic (NOD) mice under the control of rat glucagon promoter (RGP) (NOD-RGP-TGF-beta1).
1867 9691086 Based on these, it is concluded that autoimmune diabetes in NOD mice is not a systemic disease and it can be completely prevented by the paracrine TGF-beta1 in the islet compartment through protection against CD4(+) and CD8(+) effector lymphocytes.
1868 9703317 Because this procedure is targeted directly at CD154, a co-activation molecule expressed predominantly by activated CD4+ T-cells, the results suggest that CD4+ cells have a major role in the cellular immune response to xenografts.
1869 9725264 Selection using an L-selectin (CD62L)-specific Ab showed that TCR alpha/beta+CD4+CD62L+ thymocytes, emerging from the mainstream differentiation pathway, concentrate this ability to regulate autoreactive effectors.
1870 9725264 Compared with mature TCR alpha beta+CD8- thymocytes, significantly lower numbers of TCR alpha beta+CD4+CD62L+ were sufficient to achieve an efficient inhibition of disease transfer into NOD-scid recipients.
1871 9725264 Selection using an L-selectin (CD62L)-specific Ab showed that TCR alpha/beta+CD4+CD62L+ thymocytes, emerging from the mainstream differentiation pathway, concentrate this ability to regulate autoreactive effectors.
1872 9725264 Compared with mature TCR alpha beta+CD8- thymocytes, significantly lower numbers of TCR alpha beta+CD4+CD62L+ were sufficient to achieve an efficient inhibition of disease transfer into NOD-scid recipients.
1873 9726227 This clearly demonstrates that transient inactivation of most T-cells with anti-CD4 plus anti-CD8 mAbs effectively controls autoimmune disease in the isograft, despite recovery of CD4 and CD8 T-cells to normal levels.
1874 9726227 Histology showed a predominantly peri-islet T-cell and macrophage infiltrate with ductal expression of the cytokines interleukin (IL)-4, IL-2, and interferon-gamma.
1875 9726599 In mice fed with pig spleen cells, as well as in control mice, the blocking of CD4 + T cells with mAbs led to abolition of proliferation (p < 0.002), while the blocking of CD8 + led to a less marked effect.
1876 9726599 In control mice, the main splenocyte subset involved during proliferation in response to pig islet cells was Thl, since interferon gamma (IFNgamma) production increased significantly (p < 0.01) while that of interleukin-10 (IL-10) increased only slightly.
1877 9726599 The main change observed in mice fed with pig spleen cells was a marked increase in basal IL-10 production (p < 0.01) and the basal IL-10/IFNgamma ratio (p < 0.001).
1878 9726599 It seems likely that feeding with pig spleen cells shifted the Th1/Th2 balance towards a dominance of Th2-type class II-restricted CD4 + T cells, which may have been conducive to activating CD8 + suppressor T cells.
1879 9726599 In mice fed with pig spleen cells, as well as in control mice, the blocking of CD4 + T cells with mAbs led to abolition of proliferation (p < 0.002), while the blocking of CD8 + led to a less marked effect.
1880 9726599 In control mice, the main splenocyte subset involved during proliferation in response to pig islet cells was Thl, since interferon gamma (IFNgamma) production increased significantly (p < 0.01) while that of interleukin-10 (IL-10) increased only slightly.
1881 9726599 The main change observed in mice fed with pig spleen cells was a marked increase in basal IL-10 production (p < 0.01) and the basal IL-10/IFNgamma ratio (p < 0.001).
1882 9726599 It seems likely that feeding with pig spleen cells shifted the Th1/Th2 balance towards a dominance of Th2-type class II-restricted CD4 + T cells, which may have been conducive to activating CD8 + suppressor T cells.
1883 9727063 Insulin-dependent diabetes mellitus in humans is linked with specific HLA class II genes, e.g., HLA-DQA1*0301/ DQB1*0302 (DQ8).
1884 9727063 Two GAD peptide-specific (247-266 and 509-528), DQ8 restricted Th1 CD4(+) T cell lines, were generated from immunized DQ8(+)/I-Abo mice.
1885 9727063 In addition to CD4, islet mRNA from these mice also showed expression of CD8, IFNgamma, TNFalpha, Fas, and Fas ligand.
1886 9727063 Insulin-dependent diabetes mellitus in humans is linked with specific HLA class II genes, e.g., HLA-DQA1*0301/ DQB1*0302 (DQ8).
1887 9727063 Two GAD peptide-specific (247-266 and 509-528), DQ8 restricted Th1 CD4(+) T cell lines, were generated from immunized DQ8(+)/I-Abo mice.
1888 9727063 In addition to CD4, islet mRNA from these mice also showed expression of CD8, IFNgamma, TNFalpha, Fas, and Fas ligand.
1889 9757911 Characterization of self-glutamic acid decarboxylase 65-reactive CD4+ T-cell clones established from Japanese patients with insulin-dependent diabetes mellitus.
1890 9757911 To investigate autoimmunity to glutamic acid decarboxylase (GAD) 65 in Japanese patients with insulin-dependent diabetes mellitus (IDDM, type I diabetes), we established seven CD4+ T-cell clones, by stimulating peripheral blood mononuclear cells (PBMC) of six IDDM patients, using a mixture of overlapping human GAD65 peptides.
1891 9757911 Characterization of self-glutamic acid decarboxylase 65-reactive CD4+ T-cell clones established from Japanese patients with insulin-dependent diabetes mellitus.
1892 9757911 To investigate autoimmunity to glutamic acid decarboxylase (GAD) 65 in Japanese patients with insulin-dependent diabetes mellitus (IDDM, type I diabetes), we established seven CD4+ T-cell clones, by stimulating peripheral blood mononuclear cells (PBMC) of six IDDM patients, using a mixture of overlapping human GAD65 peptides.
1893 9770521 Although both major histocompatibility complex class I-restricted CD8(+) and class II-restricted CD4(+) T cell subsets are required, the specific role each subset plays in the pathogenic process is still unclear.
1894 9771979 Pancreata and grafts were harvested at pre-scheduled time points before onset of diabetes and at onset of diabetes, and stained for insulin, MHC class I, MHC class II, alphabeta-TCR, CD4, CD8 or ED1.
1895 9780221 IL-10 impacts autoimmune diabetes via a CD8+ T cell pathway circumventing the requirement for CD4+ T and B lymphocytes.
1896 9780221 Administration of anti-CD40 ligand (CD40L) mAb did not prevent disease, indicating that CD40/CD40L costimulation is not required for diabetes in IL-10-NOD mice.
1897 9780221 Immunization of IL-10-NOD mice with CFA or heat-shock protein 65, known to block diabetes in NOD mice, had no effect on their diabetes.
1898 9780221 We demonstrate that IL-10 contributes early to the pathology of diabetes via a CD8+ T cell pathway, eliminating the requirement for B lymphocytes and CD40-CD40L costimulation.
1899 9794372 The diabetes-susceptible class II MHC genes (in human and mouse) share unique nonaspartic acid residues at position 57 of the class II beta-chain.
1900 9794372 Here, we demonstrate that immature thymocytes expressing a diabetogenic islet Ag-specific transgenic TCR are positively selected by I-A(g7)PD class II MHC to give rise to mature CD4+ T cells.
1901 9794372 These results indicate that nonaspartic acid residues at position 57 of class II MHC beta-chain is important for diabetogenic CD4+ T cell activation in the periphery but is not essential for the formation of a diabetogenic T cell repertoire in the thymus.
1902 9794372 The diabetes-susceptible class II MHC genes (in human and mouse) share unique nonaspartic acid residues at position 57 of the class II beta-chain.
1903 9794372 Here, we demonstrate that immature thymocytes expressing a diabetogenic islet Ag-specific transgenic TCR are positively selected by I-A(g7)PD class II MHC to give rise to mature CD4+ T cells.
1904 9794372 These results indicate that nonaspartic acid residues at position 57 of class II MHC beta-chain is important for diabetogenic CD4+ T cell activation in the periphery but is not essential for the formation of a diabetogenic T cell repertoire in the thymus.
1905 9804349 Compared with normal wound healing: (i) the CD4/CD8 ratio in chronic wounds was significantly lower (p < 0.0027) due to a relatively lower number of CD4+ T cells; (ii) a significantly higher number of macrophages was present in the edge of both type of chronic ulcers (p < 0.001 versus day 29 p.w.); and (iii) more B cells and plasma cells were detected in both type of chronic wounds compared with any day in the acute wound healing model (p < 0.04 for CD20+ and p < 0.01 for CD79a+ cells).
1906 9819564 The nonobese diabetic (NOD) mouse spontaneously develops an autoimmune diabetes that shares many immunogenetic features with human insulin-dependent diabetes mellitus (IDDM), type 1 diabetes.
1907 9819564 T cells are subdivided into CD4+ helper T cells and CD8+ cytotoxic T cells.
1908 9840449 Peptide from glutamic acid decarboxylase similar to coxsackie B virus stimulates IFN-gamma mRNA expression in Th1-like lymphocytes from children with recent-onset insulin-dependent diabetes mellitus.
1909 9840449 CD4+ or Th-lymphocytes will be activated after stimulation resulting in interferon-gamma (IFN-gamma) production by Th1-like lymphocytes and/or interleukin-4 (IL-4) secretion from Th2-like lymphocytes.
1910 9840449 In this study we have shown that this peptide activates Th1-like lymphocytes which produce increased amounts of IFN-gamma mRNA, but seldom mRNA for IL-4.
1911 9840449 In conclusion, we suggest that GAD65 is involved in the development of type 1 diabetes and that the Th1-response may play a role in the destruction of beta cells.
1912 9865833 Immunohistochemical staining in areas of chronic chorioamnionitis showed CD3+ and CD8+ cells present in moderate numbers, and CD4+ cells in smaller numbers.
1913 9865833 CD20+ and CD56+ cells were rare or absent.
1914 9892218 A mechanism of autoimmune destruction of islet beta-cells in type 1 diabetes has been proposed to be the binding of Fas ligand (FasL) on T-cells to Fas receptors on beta-cells.
1915 9892218 We investigated this proposal by examining the expression of FasL and Fas on islet-infiltrating T-cells and beta-cells in relation to beta-cell destruction in a syngeneic islet transplant model in NOD mice.
1916 9892218 Two-color immunohistochemical assays revealed that FasL was expressed on CD4+ T-cells, CD8+ T-cells, and beta-cells in islet grafts from both diabetic and normoglycemic mice, and the percentage of each type of cell that expressed FasL was greater in islet grafts from normoglycemic compared with diabetic mice.
1917 9892218 In contrast, Fas was expressed on CD4+ T-cells, CD8+ T-cells, and beta-cells in islet grafts from diabetic mice, but it was nearly or totally absent on these cells in islet grafts from normoglycemic mice.
1918 9892218 Also, mRNA levels of interleukin (IL)-1alpha, tumor necrosis factor (TNF)-alpha, and interferon (IFN)-gamma were significantly lower in islet grafts from normoglycemic mice.
1919 9892218 Finally, Fas was induced on NOD islet cells by incubation with IL-1beta, IFN-gamma, and the combination of IL-1beta, TNF-alpha, and IFN-gamma.
1920 9892218 These findings support the concept that cytokine-induced Fas receptor expression on islet beta-cells is a mechanism for their destruction by FasL-expressing CD4+ and CD8+ T-cells and, possibly, by FasL-expressing beta-cells themselves.
1921 9892218 A mechanism of autoimmune destruction of islet beta-cells in type 1 diabetes has been proposed to be the binding of Fas ligand (FasL) on T-cells to Fas receptors on beta-cells.
1922 9892218 We investigated this proposal by examining the expression of FasL and Fas on islet-infiltrating T-cells and beta-cells in relation to beta-cell destruction in a syngeneic islet transplant model in NOD mice.
1923 9892218 Two-color immunohistochemical assays revealed that FasL was expressed on CD4+ T-cells, CD8+ T-cells, and beta-cells in islet grafts from both diabetic and normoglycemic mice, and the percentage of each type of cell that expressed FasL was greater in islet grafts from normoglycemic compared with diabetic mice.
1924 9892218 In contrast, Fas was expressed on CD4+ T-cells, CD8+ T-cells, and beta-cells in islet grafts from diabetic mice, but it was nearly or totally absent on these cells in islet grafts from normoglycemic mice.
1925 9892218 Also, mRNA levels of interleukin (IL)-1alpha, tumor necrosis factor (TNF)-alpha, and interferon (IFN)-gamma were significantly lower in islet grafts from normoglycemic mice.
1926 9892218 Finally, Fas was induced on NOD islet cells by incubation with IL-1beta, IFN-gamma, and the combination of IL-1beta, TNF-alpha, and IFN-gamma.
1927 9892218 These findings support the concept that cytokine-induced Fas receptor expression on islet beta-cells is a mechanism for their destruction by FasL-expressing CD4+ and CD8+ T-cells and, possibly, by FasL-expressing beta-cells themselves.
1928 9892218 A mechanism of autoimmune destruction of islet beta-cells in type 1 diabetes has been proposed to be the binding of Fas ligand (FasL) on T-cells to Fas receptors on beta-cells.
1929 9892218 We investigated this proposal by examining the expression of FasL and Fas on islet-infiltrating T-cells and beta-cells in relation to beta-cell destruction in a syngeneic islet transplant model in NOD mice.
1930 9892218 Two-color immunohistochemical assays revealed that FasL was expressed on CD4+ T-cells, CD8+ T-cells, and beta-cells in islet grafts from both diabetic and normoglycemic mice, and the percentage of each type of cell that expressed FasL was greater in islet grafts from normoglycemic compared with diabetic mice.
1931 9892218 In contrast, Fas was expressed on CD4+ T-cells, CD8+ T-cells, and beta-cells in islet grafts from diabetic mice, but it was nearly or totally absent on these cells in islet grafts from normoglycemic mice.
1932 9892218 Also, mRNA levels of interleukin (IL)-1alpha, tumor necrosis factor (TNF)-alpha, and interferon (IFN)-gamma were significantly lower in islet grafts from normoglycemic mice.
1933 9892218 Finally, Fas was induced on NOD islet cells by incubation with IL-1beta, IFN-gamma, and the combination of IL-1beta, TNF-alpha, and IFN-gamma.
1934 9892218 These findings support the concept that cytokine-induced Fas receptor expression on islet beta-cells is a mechanism for their destruction by FasL-expressing CD4+ and CD8+ T-cells and, possibly, by FasL-expressing beta-cells themselves.
1935 9892610 Regulatory T cells in the control of autoimmunity: the essential role of transforming growth factor beta and interleukin 4 in the prevention of autoimmune thyroiditis in rats by peripheral CD4(+)CD45RC- cells and CD4(+)CD8(-) thymocytes.
1936 9892610 Previous studies have shown that induction of autoimmune diabetes by adult thymectomy and split dose irradiation of PVG.RT1(u) rats can be prevented by their reconstitution with peripheral CD4(+)CD45RC-TCR-alpha/beta+RT6(+) cells and CD4(+)CD8(-) thymocytes from normal syngeneic donors.
1937 9892610 RT1(u) rats, development of thyroiditis was prevented by the transfer of CD4(+)CD45RC- and CD4(+)CD8(-) thymocytes from normal donors but not by CD4(+)CD45RC+ peripheral T cells.
1938 9892610 We now show that transforming growth factor (TGF)-beta and interleukin (IL)-4 both play essential roles in the mechanism of this protection since administration of monoclonal antibodies that block the biological activity of either of these cytokines abrogates the protective effect of the donor cells in the recipient rats.
1939 9892610 The prevention of both diabetes and thyroiditis by CD4(+)CD45RC- peripheral cells and CD4(+)CD8(-) thymocytes therefore does not support the view that the mechanism of regulation involves a switch from a T helper cell type 1 (Th1) to a Th2-like response, but rather relies upon a specific suppression of the autoimmune responses involving TGF-beta and IL-4.
1940 9892610 Regulatory T cells in the control of autoimmunity: the essential role of transforming growth factor beta and interleukin 4 in the prevention of autoimmune thyroiditis in rats by peripheral CD4(+)CD45RC- cells and CD4(+)CD8(-) thymocytes.
1941 9892610 Previous studies have shown that induction of autoimmune diabetes by adult thymectomy and split dose irradiation of PVG.RT1(u) rats can be prevented by their reconstitution with peripheral CD4(+)CD45RC-TCR-alpha/beta+RT6(+) cells and CD4(+)CD8(-) thymocytes from normal syngeneic donors.
1942 9892610 RT1(u) rats, development of thyroiditis was prevented by the transfer of CD4(+)CD45RC- and CD4(+)CD8(-) thymocytes from normal donors but not by CD4(+)CD45RC+ peripheral T cells.
1943 9892610 We now show that transforming growth factor (TGF)-beta and interleukin (IL)-4 both play essential roles in the mechanism of this protection since administration of monoclonal antibodies that block the biological activity of either of these cytokines abrogates the protective effect of the donor cells in the recipient rats.
1944 9892610 The prevention of both diabetes and thyroiditis by CD4(+)CD45RC- peripheral cells and CD4(+)CD8(-) thymocytes therefore does not support the view that the mechanism of regulation involves a switch from a T helper cell type 1 (Th1) to a Th2-like response, but rather relies upon a specific suppression of the autoimmune responses involving TGF-beta and IL-4.
1945 9892610 Regulatory T cells in the control of autoimmunity: the essential role of transforming growth factor beta and interleukin 4 in the prevention of autoimmune thyroiditis in rats by peripheral CD4(+)CD45RC- cells and CD4(+)CD8(-) thymocytes.
1946 9892610 Previous studies have shown that induction of autoimmune diabetes by adult thymectomy and split dose irradiation of PVG.RT1(u) rats can be prevented by their reconstitution with peripheral CD4(+)CD45RC-TCR-alpha/beta+RT6(+) cells and CD4(+)CD8(-) thymocytes from normal syngeneic donors.
1947 9892610 RT1(u) rats, development of thyroiditis was prevented by the transfer of CD4(+)CD45RC- and CD4(+)CD8(-) thymocytes from normal donors but not by CD4(+)CD45RC+ peripheral T cells.
1948 9892610 We now show that transforming growth factor (TGF)-beta and interleukin (IL)-4 both play essential roles in the mechanism of this protection since administration of monoclonal antibodies that block the biological activity of either of these cytokines abrogates the protective effect of the donor cells in the recipient rats.
1949 9892610 The prevention of both diabetes and thyroiditis by CD4(+)CD45RC- peripheral cells and CD4(+)CD8(-) thymocytes therefore does not support the view that the mechanism of regulation involves a switch from a T helper cell type 1 (Th1) to a Th2-like response, but rather relies upon a specific suppression of the autoimmune responses involving TGF-beta and IL-4.
1950 9892610 Regulatory T cells in the control of autoimmunity: the essential role of transforming growth factor beta and interleukin 4 in the prevention of autoimmune thyroiditis in rats by peripheral CD4(+)CD45RC- cells and CD4(+)CD8(-) thymocytes.
1951 9892610 Previous studies have shown that induction of autoimmune diabetes by adult thymectomy and split dose irradiation of PVG.RT1(u) rats can be prevented by their reconstitution with peripheral CD4(+)CD45RC-TCR-alpha/beta+RT6(+) cells and CD4(+)CD8(-) thymocytes from normal syngeneic donors.
1952 9892610 RT1(u) rats, development of thyroiditis was prevented by the transfer of CD4(+)CD45RC- and CD4(+)CD8(-) thymocytes from normal donors but not by CD4(+)CD45RC+ peripheral T cells.
1953 9892610 We now show that transforming growth factor (TGF)-beta and interleukin (IL)-4 both play essential roles in the mechanism of this protection since administration of monoclonal antibodies that block the biological activity of either of these cytokines abrogates the protective effect of the donor cells in the recipient rats.
1954 9892610 The prevention of both diabetes and thyroiditis by CD4(+)CD45RC- peripheral cells and CD4(+)CD8(-) thymocytes therefore does not support the view that the mechanism of regulation involves a switch from a T helper cell type 1 (Th1) to a Th2-like response, but rather relies upon a specific suppression of the autoimmune responses involving TGF-beta and IL-4.
1955 9933451 We analysed the development of insulin-dependent diabetes mellitus (IDDM) produced by adoptive transfer of islet lymphocytes from NOD into NOD.scid mice.
1956 9933451 Here we show that the transfer was most effective when both CD4+ and CD8+ T cells were present in the infiltrate, but CD4+ T cells alone were sufficient to cause the disease.
1957 9973444 An increase in the CD4/CD8 T cell ratio was observed in both the syn- and alloMLR due to a relative weak expansion of CD8+ T cells with DC of the BB-DP rat.
1958 10047431 Both CD4(+)and CD8(+)T cells are required for IFN-gamma gene expression in pancreatic islets and autoimmune diabetes development in biobreeding rats.
1959 10047431 To study the relative roles of CD4(+)and CD8(+)T cells and their cytokine products in autoimmune diabetes development, we selectively depleted CD4(+)and CD8(+)T cells in autoimmune diabetes-prone (DP) biobreeding (BB) rats, by administrations of anti-CD2 and anti-CD8 monoclonal antibody (mAb) respectively.
1960 10047431 Depletion of CD4(+)T cells (by anti-CD2 mAb) in blood, spleen and islets prevented diabetes development in DP-BB rats, and depletion of CD8(+)T cells (by anti-CD8 mAb) delayed and significantly decreased diabetes incidence.
1961 10047431 Depletion of either CD4(+)or CD8(+)T cells completely prevented IFN-gamma mRNA upregulation in islets of DP-BB rats above the low level expressed in islets of diabetes-resistant (DR) BB rats.
1962 10047431 Also, IL-10 mRNA levels in islets of DP-BB rats were significantly decreased by depletion of either CD4(+)or CD8(+)T cells, whereas the effects of the anti-T cell mAb on mRNA levels of other cytokines in islets (IL-2, IL-4, IL-12p40, and TNF-alpha) were discordant.
1963 10047431 In contrast, both mAb treatments significantly upregulated IL-4 and TNF-alpha mRNA levels in spleens of DP-BB rats.
1964 10047431 These results demonstrate that islet infiltration by both CD4(+)and CD8(+)T cells is required for IFN-gamma and IL-10 production in islets and beta-cell destruction.
1965 10047431 Depletion of either CD4(+)or CD8(+)T cells may prevent beta-cell destruction by decreasing IFN-gamma and IL-10 production in islets and increasing IL-4 and TNF-alpha production systemically.
1966 10047431 Both CD4(+)and CD8(+)T cells are required for IFN-gamma gene expression in pancreatic islets and autoimmune diabetes development in biobreeding rats.
1967 10047431 To study the relative roles of CD4(+)and CD8(+)T cells and their cytokine products in autoimmune diabetes development, we selectively depleted CD4(+)and CD8(+)T cells in autoimmune diabetes-prone (DP) biobreeding (BB) rats, by administrations of anti-CD2 and anti-CD8 monoclonal antibody (mAb) respectively.
1968 10047431 Depletion of CD4(+)T cells (by anti-CD2 mAb) in blood, spleen and islets prevented diabetes development in DP-BB rats, and depletion of CD8(+)T cells (by anti-CD8 mAb) delayed and significantly decreased diabetes incidence.
1969 10047431 Depletion of either CD4(+)or CD8(+)T cells completely prevented IFN-gamma mRNA upregulation in islets of DP-BB rats above the low level expressed in islets of diabetes-resistant (DR) BB rats.
1970 10047431 Also, IL-10 mRNA levels in islets of DP-BB rats were significantly decreased by depletion of either CD4(+)or CD8(+)T cells, whereas the effects of the anti-T cell mAb on mRNA levels of other cytokines in islets (IL-2, IL-4, IL-12p40, and TNF-alpha) were discordant.
1971 10047431 In contrast, both mAb treatments significantly upregulated IL-4 and TNF-alpha mRNA levels in spleens of DP-BB rats.
1972 10047431 These results demonstrate that islet infiltration by both CD4(+)and CD8(+)T cells is required for IFN-gamma and IL-10 production in islets and beta-cell destruction.
1973 10047431 Depletion of either CD4(+)or CD8(+)T cells may prevent beta-cell destruction by decreasing IFN-gamma and IL-10 production in islets and increasing IL-4 and TNF-alpha production systemically.
1974 10047431 Both CD4(+)and CD8(+)T cells are required for IFN-gamma gene expression in pancreatic islets and autoimmune diabetes development in biobreeding rats.
1975 10047431 To study the relative roles of CD4(+)and CD8(+)T cells and their cytokine products in autoimmune diabetes development, we selectively depleted CD4(+)and CD8(+)T cells in autoimmune diabetes-prone (DP) biobreeding (BB) rats, by administrations of anti-CD2 and anti-CD8 monoclonal antibody (mAb) respectively.
1976 10047431 Depletion of CD4(+)T cells (by anti-CD2 mAb) in blood, spleen and islets prevented diabetes development in DP-BB rats, and depletion of CD8(+)T cells (by anti-CD8 mAb) delayed and significantly decreased diabetes incidence.
1977 10047431 Depletion of either CD4(+)or CD8(+)T cells completely prevented IFN-gamma mRNA upregulation in islets of DP-BB rats above the low level expressed in islets of diabetes-resistant (DR) BB rats.
1978 10047431 Also, IL-10 mRNA levels in islets of DP-BB rats were significantly decreased by depletion of either CD4(+)or CD8(+)T cells, whereas the effects of the anti-T cell mAb on mRNA levels of other cytokines in islets (IL-2, IL-4, IL-12p40, and TNF-alpha) were discordant.
1979 10047431 In contrast, both mAb treatments significantly upregulated IL-4 and TNF-alpha mRNA levels in spleens of DP-BB rats.
1980 10047431 These results demonstrate that islet infiltration by both CD4(+)and CD8(+)T cells is required for IFN-gamma and IL-10 production in islets and beta-cell destruction.
1981 10047431 Depletion of either CD4(+)or CD8(+)T cells may prevent beta-cell destruction by decreasing IFN-gamma and IL-10 production in islets and increasing IL-4 and TNF-alpha production systemically.
1982 10047431 Both CD4(+)and CD8(+)T cells are required for IFN-gamma gene expression in pancreatic islets and autoimmune diabetes development in biobreeding rats.
1983 10047431 To study the relative roles of CD4(+)and CD8(+)T cells and their cytokine products in autoimmune diabetes development, we selectively depleted CD4(+)and CD8(+)T cells in autoimmune diabetes-prone (DP) biobreeding (BB) rats, by administrations of anti-CD2 and anti-CD8 monoclonal antibody (mAb) respectively.
1984 10047431 Depletion of CD4(+)T cells (by anti-CD2 mAb) in blood, spleen and islets prevented diabetes development in DP-BB rats, and depletion of CD8(+)T cells (by anti-CD8 mAb) delayed and significantly decreased diabetes incidence.
1985 10047431 Depletion of either CD4(+)or CD8(+)T cells completely prevented IFN-gamma mRNA upregulation in islets of DP-BB rats above the low level expressed in islets of diabetes-resistant (DR) BB rats.
1986 10047431 Also, IL-10 mRNA levels in islets of DP-BB rats were significantly decreased by depletion of either CD4(+)or CD8(+)T cells, whereas the effects of the anti-T cell mAb on mRNA levels of other cytokines in islets (IL-2, IL-4, IL-12p40, and TNF-alpha) were discordant.
1987 10047431 In contrast, both mAb treatments significantly upregulated IL-4 and TNF-alpha mRNA levels in spleens of DP-BB rats.
1988 10047431 These results demonstrate that islet infiltration by both CD4(+)and CD8(+)T cells is required for IFN-gamma and IL-10 production in islets and beta-cell destruction.
1989 10047431 Depletion of either CD4(+)or CD8(+)T cells may prevent beta-cell destruction by decreasing IFN-gamma and IL-10 production in islets and increasing IL-4 and TNF-alpha production systemically.
1990 10047431 Both CD4(+)and CD8(+)T cells are required for IFN-gamma gene expression in pancreatic islets and autoimmune diabetes development in biobreeding rats.
1991 10047431 To study the relative roles of CD4(+)and CD8(+)T cells and their cytokine products in autoimmune diabetes development, we selectively depleted CD4(+)and CD8(+)T cells in autoimmune diabetes-prone (DP) biobreeding (BB) rats, by administrations of anti-CD2 and anti-CD8 monoclonal antibody (mAb) respectively.
1992 10047431 Depletion of CD4(+)T cells (by anti-CD2 mAb) in blood, spleen and islets prevented diabetes development in DP-BB rats, and depletion of CD8(+)T cells (by anti-CD8 mAb) delayed and significantly decreased diabetes incidence.
1993 10047431 Depletion of either CD4(+)or CD8(+)T cells completely prevented IFN-gamma mRNA upregulation in islets of DP-BB rats above the low level expressed in islets of diabetes-resistant (DR) BB rats.
1994 10047431 Also, IL-10 mRNA levels in islets of DP-BB rats were significantly decreased by depletion of either CD4(+)or CD8(+)T cells, whereas the effects of the anti-T cell mAb on mRNA levels of other cytokines in islets (IL-2, IL-4, IL-12p40, and TNF-alpha) were discordant.
1995 10047431 In contrast, both mAb treatments significantly upregulated IL-4 and TNF-alpha mRNA levels in spleens of DP-BB rats.
1996 10047431 These results demonstrate that islet infiltration by both CD4(+)and CD8(+)T cells is required for IFN-gamma and IL-10 production in islets and beta-cell destruction.
1997 10047431 Depletion of either CD4(+)or CD8(+)T cells may prevent beta-cell destruction by decreasing IFN-gamma and IL-10 production in islets and increasing IL-4 and TNF-alpha production systemically.
1998 10047431 Both CD4(+)and CD8(+)T cells are required for IFN-gamma gene expression in pancreatic islets and autoimmune diabetes development in biobreeding rats.
1999 10047431 To study the relative roles of CD4(+)and CD8(+)T cells and their cytokine products in autoimmune diabetes development, we selectively depleted CD4(+)and CD8(+)T cells in autoimmune diabetes-prone (DP) biobreeding (BB) rats, by administrations of anti-CD2 and anti-CD8 monoclonal antibody (mAb) respectively.
2000 10047431 Depletion of CD4(+)T cells (by anti-CD2 mAb) in blood, spleen and islets prevented diabetes development in DP-BB rats, and depletion of CD8(+)T cells (by anti-CD8 mAb) delayed and significantly decreased diabetes incidence.
2001 10047431 Depletion of either CD4(+)or CD8(+)T cells completely prevented IFN-gamma mRNA upregulation in islets of DP-BB rats above the low level expressed in islets of diabetes-resistant (DR) BB rats.
2002 10047431 Also, IL-10 mRNA levels in islets of DP-BB rats were significantly decreased by depletion of either CD4(+)or CD8(+)T cells, whereas the effects of the anti-T cell mAb on mRNA levels of other cytokines in islets (IL-2, IL-4, IL-12p40, and TNF-alpha) were discordant.
2003 10047431 In contrast, both mAb treatments significantly upregulated IL-4 and TNF-alpha mRNA levels in spleens of DP-BB rats.
2004 10047431 These results demonstrate that islet infiltration by both CD4(+)and CD8(+)T cells is required for IFN-gamma and IL-10 production in islets and beta-cell destruction.
2005 10047431 Depletion of either CD4(+)or CD8(+)T cells may prevent beta-cell destruction by decreasing IFN-gamma and IL-10 production in islets and increasing IL-4 and TNF-alpha production systemically.
2006 10047431 Both CD4(+)and CD8(+)T cells are required for IFN-gamma gene expression in pancreatic islets and autoimmune diabetes development in biobreeding rats.
2007 10047431 To study the relative roles of CD4(+)and CD8(+)T cells and their cytokine products in autoimmune diabetes development, we selectively depleted CD4(+)and CD8(+)T cells in autoimmune diabetes-prone (DP) biobreeding (BB) rats, by administrations of anti-CD2 and anti-CD8 monoclonal antibody (mAb) respectively.
2008 10047431 Depletion of CD4(+)T cells (by anti-CD2 mAb) in blood, spleen and islets prevented diabetes development in DP-BB rats, and depletion of CD8(+)T cells (by anti-CD8 mAb) delayed and significantly decreased diabetes incidence.
2009 10047431 Depletion of either CD4(+)or CD8(+)T cells completely prevented IFN-gamma mRNA upregulation in islets of DP-BB rats above the low level expressed in islets of diabetes-resistant (DR) BB rats.
2010 10047431 Also, IL-10 mRNA levels in islets of DP-BB rats were significantly decreased by depletion of either CD4(+)or CD8(+)T cells, whereas the effects of the anti-T cell mAb on mRNA levels of other cytokines in islets (IL-2, IL-4, IL-12p40, and TNF-alpha) were discordant.
2011 10047431 In contrast, both mAb treatments significantly upregulated IL-4 and TNF-alpha mRNA levels in spleens of DP-BB rats.
2012 10047431 These results demonstrate that islet infiltration by both CD4(+)and CD8(+)T cells is required for IFN-gamma and IL-10 production in islets and beta-cell destruction.
2013 10047431 Depletion of either CD4(+)or CD8(+)T cells may prevent beta-cell destruction by decreasing IFN-gamma and IL-10 production in islets and increasing IL-4 and TNF-alpha production systemically.
2014 10049952 Development of disease can be prevented by reconstitution of PVG rats shortly after their final irradiation with either peripheral CD4(+)CD45RC- T cells or CD4(+)CD8(-) thymocytes from syngeneic donors.
2015 10049952 Although the activity of both populations is known to depend on the activities of endogenously produced interleukin 4 and transforming growth factor beta, implying a common mechanism, the issue of antigen specificity of the cells involved has not yet been addressed.
2016 10049952 Significantly, in contrast to the peripheral CD4(+) T cells, CD4(+)CD8(-) thymocytes from 131I-treated PVG donors were still able to prevent thyroiditis upon adoptive transfer.
2017 10049952 Development of disease can be prevented by reconstitution of PVG rats shortly after their final irradiation with either peripheral CD4(+)CD45RC- T cells or CD4(+)CD8(-) thymocytes from syngeneic donors.
2018 10049952 Although the activity of both populations is known to depend on the activities of endogenously produced interleukin 4 and transforming growth factor beta, implying a common mechanism, the issue of antigen specificity of the cells involved has not yet been addressed.
2019 10049952 Significantly, in contrast to the peripheral CD4(+) T cells, CD4(+)CD8(-) thymocytes from 131I-treated PVG donors were still able to prevent thyroiditis upon adoptive transfer.
2020 10072489 Interestingly, despite the fact that the original islet allograft presented only MHC class I alloantigens, CD8+ T cells obtained from tolerant animals readily collaborated with naive CD4+ T cells to reject donor-type islet grafts.
2021 10072489 Conversely, tolerant CD4+ T cells failed to collaborate effectively with naive CD8+ T cells for the rejection of donor-type grafts.
2022 10072489 In conclusion, the MHC class I+, II- islet allograft paradoxically leads to a change in the donor-reactive CD4 T cell subset and not in the CD8 subset.
2023 10072489 We hypothesize that the tolerant state is not due to direct class I alloantigen presentation to CD8 T cells but, rather, occurs via the indirect pathway of donor Ag presentation to CD4 T cells in the context of host MHC class II molecules.
2024 10072489 Interestingly, despite the fact that the original islet allograft presented only MHC class I alloantigens, CD8+ T cells obtained from tolerant animals readily collaborated with naive CD4+ T cells to reject donor-type islet grafts.
2025 10072489 Conversely, tolerant CD4+ T cells failed to collaborate effectively with naive CD8+ T cells for the rejection of donor-type grafts.
2026 10072489 In conclusion, the MHC class I+, II- islet allograft paradoxically leads to a change in the donor-reactive CD4 T cell subset and not in the CD8 subset.
2027 10072489 We hypothesize that the tolerant state is not due to direct class I alloantigen presentation to CD8 T cells but, rather, occurs via the indirect pathway of donor Ag presentation to CD4 T cells in the context of host MHC class II molecules.
2028 10072489 Interestingly, despite the fact that the original islet allograft presented only MHC class I alloantigens, CD8+ T cells obtained from tolerant animals readily collaborated with naive CD4+ T cells to reject donor-type islet grafts.
2029 10072489 Conversely, tolerant CD4+ T cells failed to collaborate effectively with naive CD8+ T cells for the rejection of donor-type grafts.
2030 10072489 In conclusion, the MHC class I+, II- islet allograft paradoxically leads to a change in the donor-reactive CD4 T cell subset and not in the CD8 subset.
2031 10072489 We hypothesize that the tolerant state is not due to direct class I alloantigen presentation to CD8 T cells but, rather, occurs via the indirect pathway of donor Ag presentation to CD4 T cells in the context of host MHC class II molecules.
2032 10072489 Interestingly, despite the fact that the original islet allograft presented only MHC class I alloantigens, CD8+ T cells obtained from tolerant animals readily collaborated with naive CD4+ T cells to reject donor-type islet grafts.
2033 10072489 Conversely, tolerant CD4+ T cells failed to collaborate effectively with naive CD8+ T cells for the rejection of donor-type grafts.
2034 10072489 In conclusion, the MHC class I+, II- islet allograft paradoxically leads to a change in the donor-reactive CD4 T cell subset and not in the CD8 subset.
2035 10072489 We hypothesize that the tolerant state is not due to direct class I alloantigen presentation to CD8 T cells but, rather, occurs via the indirect pathway of donor Ag presentation to CD4 T cells in the context of host MHC class II molecules.
2036 10078545 Major DQ8-restricted T-cell epitopes for human GAD65 mapped using human CD4, DQA1*0301, DQB1*0302 transgenic IA(null) NOD mice.
2037 10078545 To map T-cell epitopes for GAD65 restricted to the diabetes-associated DQ8 heterodimer, we generated transgenic NOD mice expressing HLA-DQ8 and human CD4 while having the mouse class II gene (IA(beta)) deleted.
2038 10078545 Major DQ8-restricted T-cell epitopes for human GAD65 mapped using human CD4, DQA1*0301, DQB1*0302 transgenic IA(null) NOD mice.
2039 10078545 To map T-cell epitopes for GAD65 restricted to the diabetes-associated DQ8 heterodimer, we generated transgenic NOD mice expressing HLA-DQ8 and human CD4 while having the mouse class II gene (IA(beta)) deleted.
2040 10087179 Both CD4(+) T cells and CD8(+) T cells are required for iodine accelerated thyroiditis in NOD mice.
2041 10087179 Furthermore, our studies show for the first time that both CD4(+) and CD8(+) T cells are necessary for the development of this accelerated but essentially spontaneous murine thyroid disease.
2042 10087179 Both CD4(+) T cells and CD8(+) T cells are required for iodine accelerated thyroiditis in NOD mice.
2043 10087179 Furthermore, our studies show for the first time that both CD4(+) and CD8(+) T cells are necessary for the development of this accelerated but essentially spontaneous murine thyroid disease.
2044 10096786 Intensity and mechanisms of in vitro xenorecognition of adult pig pancreatic islet cells by CD4+ and CD8+ lymphocytes from type I diabetic or healthy subjects.
2045 10096786 Proliferation in response to islet cells was strongly decreased (p<0.01) when CD4+ T cells were blocked with monoclonal antibodies, whereas the blocking of CD8+ cells or NK cells gave less pronounced effects.
2046 10096786 Purified CD4+ cells alone did not proliferate in response to islet cells but recovered their proliferative ability when mixed with antigen-presenting cells, whereas CD8+ cells alone proliferated in the presence of interleukin-2 in response to islet cells.
2047 10096786 During proliferation in response to islet cells, interleukin-10 increased 43-fold (p<0.01) but interferon-gamma increased only slightly.
2048 10096786 No statistical differences were detected between diabetic and control subjects with respect to lymphocyte subsets and the recognition mechanisms or to interferon-gamma/interleukin-10 production in response to islet cells.
2049 10096786 This situation involves a dominant CD4 class II-restricted Th2 response, with an indirect recognition pathway, as well as a CD8 T-cell response resulting from direct recognition.
2050 10096786 Intensity and mechanisms of in vitro xenorecognition of adult pig pancreatic islet cells by CD4+ and CD8+ lymphocytes from type I diabetic or healthy subjects.
2051 10096786 Proliferation in response to islet cells was strongly decreased (p<0.01) when CD4+ T cells were blocked with monoclonal antibodies, whereas the blocking of CD8+ cells or NK cells gave less pronounced effects.
2052 10096786 Purified CD4+ cells alone did not proliferate in response to islet cells but recovered their proliferative ability when mixed with antigen-presenting cells, whereas CD8+ cells alone proliferated in the presence of interleukin-2 in response to islet cells.
2053 10096786 During proliferation in response to islet cells, interleukin-10 increased 43-fold (p<0.01) but interferon-gamma increased only slightly.
2054 10096786 No statistical differences were detected between diabetic and control subjects with respect to lymphocyte subsets and the recognition mechanisms or to interferon-gamma/interleukin-10 production in response to islet cells.
2055 10096786 This situation involves a dominant CD4 class II-restricted Th2 response, with an indirect recognition pathway, as well as a CD8 T-cell response resulting from direct recognition.
2056 10096786 Intensity and mechanisms of in vitro xenorecognition of adult pig pancreatic islet cells by CD4+ and CD8+ lymphocytes from type I diabetic or healthy subjects.
2057 10096786 Proliferation in response to islet cells was strongly decreased (p<0.01) when CD4+ T cells were blocked with monoclonal antibodies, whereas the blocking of CD8+ cells or NK cells gave less pronounced effects.
2058 10096786 Purified CD4+ cells alone did not proliferate in response to islet cells but recovered their proliferative ability when mixed with antigen-presenting cells, whereas CD8+ cells alone proliferated in the presence of interleukin-2 in response to islet cells.
2059 10096786 During proliferation in response to islet cells, interleukin-10 increased 43-fold (p<0.01) but interferon-gamma increased only slightly.
2060 10096786 No statistical differences were detected between diabetic and control subjects with respect to lymphocyte subsets and the recognition mechanisms or to interferon-gamma/interleukin-10 production in response to islet cells.
2061 10096786 This situation involves a dominant CD4 class II-restricted Th2 response, with an indirect recognition pathway, as well as a CD8 T-cell response resulting from direct recognition.
2062 10096786 Intensity and mechanisms of in vitro xenorecognition of adult pig pancreatic islet cells by CD4+ and CD8+ lymphocytes from type I diabetic or healthy subjects.
2063 10096786 Proliferation in response to islet cells was strongly decreased (p<0.01) when CD4+ T cells were blocked with monoclonal antibodies, whereas the blocking of CD8+ cells or NK cells gave less pronounced effects.
2064 10096786 Purified CD4+ cells alone did not proliferate in response to islet cells but recovered their proliferative ability when mixed with antigen-presenting cells, whereas CD8+ cells alone proliferated in the presence of interleukin-2 in response to islet cells.
2065 10096786 During proliferation in response to islet cells, interleukin-10 increased 43-fold (p<0.01) but interferon-gamma increased only slightly.
2066 10096786 No statistical differences were detected between diabetic and control subjects with respect to lymphocyte subsets and the recognition mechanisms or to interferon-gamma/interleukin-10 production in response to islet cells.
2067 10096786 This situation involves a dominant CD4 class II-restricted Th2 response, with an indirect recognition pathway, as well as a CD8 T-cell response resulting from direct recognition.
2068 10190896 Of these, interleukin 1beta, tumor necrosis factor (TNF)-alpha, and interferon (IFN)-gamma are perhaps the most important.
2069 10190896 We found that islets deficient in Fas, IFN-gamma receptor, or inducible nitric oxide synthase had normal diabetes development; however, the specific lack of TNF- alpha receptor 1 (p55) afforded islets a profound protection from disease by altering the ability of islet-reactive, CD4(+) T cells to establish insulitis and subsequently destroy islet beta cells.
2070 10193314 We used reverse transcriptase polymerase chain reaction (PCR) and quantitative PCR techniques to examine mRNA expression of interferon (IFN)-gamma (Th1 type cytokine), and interleukin (IL)-4 (Th2 type cytokine) in splenic cells.
2071 10193314 We observed that in Reo-2 infected mice the level of IFN-gamma expression increases with the development of insulitis, whereas expression of message for IL-4 is minimal to detectable with the immuno-inflammatory process 10 days after infection.
2072 10193314 Furthermore altered CD4+/CD8+ cell ratio compared with uninfected mice in the splenic cells by the infection was recovered to the ratio of uninfected mice by the treatment of mAb against mouse IFN-gamma, suggesting normalization of T cell balance in immune system.
2073 10201921 We report that cultured DR- and DP-BB rat thymi generate mature CD4 and CD8 single-positive cells with up-regulated TCRs.
2074 10201921 In contrast, DP-BB rat cultures generate fewer CD4+, CD8+, and RT6+ T cells.
2075 10201921 We report that cultured DR- and DP-BB rat thymi generate mature CD4 and CD8 single-positive cells with up-regulated TCRs.
2076 10201921 In contrast, DP-BB rat cultures generate fewer CD4+, CD8+, and RT6+ T cells.
2077 10201997 Pancreatic infiltration but not diabetes occurs in the relative absence of MHC class II-restricted CD4 T cells: studies using NOD/CIITA-deficient mice.
2078 10201997 Here, we demonstrate that NOD mice lacking the CIITA (class II transactivator) molecule, and hence deficient in MHC class II expression and peripheral CD4 T cells, show significant pancreatic infiltration but do not develop diabetes.
2079 10201997 Adoptive transfer studies show that the paucity of CD4 T cells in NOD-CIITA knockout mice is responsible for the absence of diabetes, since the CD8 T cell and B cell compartments are functional.
2080 10201997 An autoaggressive CD8+ T cell clone can, however, transfer diabetes in CIITA knockout recipient mice without CD4 T cell help, albeit with some delay compared with that in CIITA-sufficient recipients.
2081 10201997 This highlights the fact that a high number of in vitro activated autoaggressive CD8 T cells can over-ride the requirement for CD4 T cell help for the onset of diabetes.
2082 10201997 Pancreatic infiltration but not diabetes occurs in the relative absence of MHC class II-restricted CD4 T cells: studies using NOD/CIITA-deficient mice.
2083 10201997 Here, we demonstrate that NOD mice lacking the CIITA (class II transactivator) molecule, and hence deficient in MHC class II expression and peripheral CD4 T cells, show significant pancreatic infiltration but do not develop diabetes.
2084 10201997 Adoptive transfer studies show that the paucity of CD4 T cells in NOD-CIITA knockout mice is responsible for the absence of diabetes, since the CD8 T cell and B cell compartments are functional.
2085 10201997 An autoaggressive CD8+ T cell clone can, however, transfer diabetes in CIITA knockout recipient mice without CD4 T cell help, albeit with some delay compared with that in CIITA-sufficient recipients.
2086 10201997 This highlights the fact that a high number of in vitro activated autoaggressive CD8 T cells can over-ride the requirement for CD4 T cell help for the onset of diabetes.
2087 10201997 Pancreatic infiltration but not diabetes occurs in the relative absence of MHC class II-restricted CD4 T cells: studies using NOD/CIITA-deficient mice.
2088 10201997 Here, we demonstrate that NOD mice lacking the CIITA (class II transactivator) molecule, and hence deficient in MHC class II expression and peripheral CD4 T cells, show significant pancreatic infiltration but do not develop diabetes.
2089 10201997 Adoptive transfer studies show that the paucity of CD4 T cells in NOD-CIITA knockout mice is responsible for the absence of diabetes, since the CD8 T cell and B cell compartments are functional.
2090 10201997 An autoaggressive CD8+ T cell clone can, however, transfer diabetes in CIITA knockout recipient mice without CD4 T cell help, albeit with some delay compared with that in CIITA-sufficient recipients.
2091 10201997 This highlights the fact that a high number of in vitro activated autoaggressive CD8 T cells can over-ride the requirement for CD4 T cell help for the onset of diabetes.
2092 10201997 Pancreatic infiltration but not diabetes occurs in the relative absence of MHC class II-restricted CD4 T cells: studies using NOD/CIITA-deficient mice.
2093 10201997 Here, we demonstrate that NOD mice lacking the CIITA (class II transactivator) molecule, and hence deficient in MHC class II expression and peripheral CD4 T cells, show significant pancreatic infiltration but do not develop diabetes.
2094 10201997 Adoptive transfer studies show that the paucity of CD4 T cells in NOD-CIITA knockout mice is responsible for the absence of diabetes, since the CD8 T cell and B cell compartments are functional.
2095 10201997 An autoaggressive CD8+ T cell clone can, however, transfer diabetes in CIITA knockout recipient mice without CD4 T cell help, albeit with some delay compared with that in CIITA-sufficient recipients.
2096 10201997 This highlights the fact that a high number of in vitro activated autoaggressive CD8 T cells can over-ride the requirement for CD4 T cell help for the onset of diabetes.
2097 10201997 Pancreatic infiltration but not diabetes occurs in the relative absence of MHC class II-restricted CD4 T cells: studies using NOD/CIITA-deficient mice.
2098 10201997 Here, we demonstrate that NOD mice lacking the CIITA (class II transactivator) molecule, and hence deficient in MHC class II expression and peripheral CD4 T cells, show significant pancreatic infiltration but do not develop diabetes.
2099 10201997 Adoptive transfer studies show that the paucity of CD4 T cells in NOD-CIITA knockout mice is responsible for the absence of diabetes, since the CD8 T cell and B cell compartments are functional.
2100 10201997 An autoaggressive CD8+ T cell clone can, however, transfer diabetes in CIITA knockout recipient mice without CD4 T cell help, albeit with some delay compared with that in CIITA-sufficient recipients.
2101 10201997 This highlights the fact that a high number of in vitro activated autoaggressive CD8 T cells can over-ride the requirement for CD4 T cell help for the onset of diabetes.
2102 10202001 One segregates as a recessive trait and is associated with a reduction in the peripheral frequency of diabetogenic CD8+ (but not CD4+) T cells.
2103 10202001 The other segregates as a dominant trait and is mediated by IL-4- and TGF-beta1-independent immune suppressive functions provided by lymphocytes that target diabetogenic CD4+ and CD8+ T cells, without causing their deletion, anergy, immune deviation, or ignorance.
2104 10202001 One segregates as a recessive trait and is associated with a reduction in the peripheral frequency of diabetogenic CD8+ (but not CD4+) T cells.
2105 10202001 The other segregates as a dominant trait and is mediated by IL-4- and TGF-beta1-independent immune suppressive functions provided by lymphocytes that target diabetogenic CD4+ and CD8+ T cells, without causing their deletion, anergy, immune deviation, or ignorance.
2106 10201999 To address the question of whether the cell death-inducing cytokines TNF and lymphotoxin alpha are involved in this process, we generated nonobese diabetic (NOD) mice that are deficient for TNF receptor 1 (TNFR1 or TNFRp55).
2107 10201999 Since this was probably due to the complex immunomodulatory effects of TNF and lymphotoxin alpha signaled via TNFR1 on lymphohemopoietic cells, adoptive transfer experiments with spleen cells from diabetic NOD mice were conducted.
2108 10201999 Together with the described expression patterns of perforin and TNF in the mononuclear islet infiltrates of NOD mice, these results indicate that two diabetogenic effector mechanisms are delivered by distinct cell populations: CD8+ T cells lyse beta cells via perforin-dependent cytotoxicity, whereas CD4+ T cells, macrophages, and dendritic cells contribute to diabetes development via TNFR1-dependent beta cell toxicity.
2109 10206487 The role of CD8+ cells, cell degeneration, and Fas ligand in insulitis after intraperitoneal transfer of NOD splenocytes.
2110 10206487 Cells expressing CD4, CD8, CD18, CD49d/CD29, CD44, CD54, CD80, CD86, CD106, CD11b/CD18 or DNA breaks were stained in the pancreases of female or male scid/ scid mice after adoptive transfer of lymphocytes from older than 12-week female nonobese diabetic (NOD) or Balb/c mice.
2111 10206487 After intraperitoneal adoptive transfer of NOD splenocytes to female severe combined immunodeficiency (scid)/scid mice, in situ end labeling (ISEL)+ as well as CD80+ and CD86+ cell infiltrates appeared first in the blood vessel walls and pancreatic interstitial tissue at 2-3 weeks after transfer.
2112 10206487 CD4+, CD8+, CD18+, CD44+, CD54+, and CD106+ cells then encircled and invaded some islets of the scid/scid mice 2 to 7 weeks after transfer.
2113 10206487 Fas ligand was not present in Western blotting.
2114 10206487 It is proposed that apoptosis commonly occurs in islet-infiltrating lymphocytes and that in the scid/scid adoptive-transfer model, the first islet-infiltrating cells are destroyed by programmed cell death independent of Fas ligand.
2115 10206487 The role of CD8+ cells, cell degeneration, and Fas ligand in insulitis after intraperitoneal transfer of NOD splenocytes.
2116 10206487 Cells expressing CD4, CD8, CD18, CD49d/CD29, CD44, CD54, CD80, CD86, CD106, CD11b/CD18 or DNA breaks were stained in the pancreases of female or male scid/ scid mice after adoptive transfer of lymphocytes from older than 12-week female nonobese diabetic (NOD) or Balb/c mice.
2117 10206487 After intraperitoneal adoptive transfer of NOD splenocytes to female severe combined immunodeficiency (scid)/scid mice, in situ end labeling (ISEL)+ as well as CD80+ and CD86+ cell infiltrates appeared first in the blood vessel walls and pancreatic interstitial tissue at 2-3 weeks after transfer.
2118 10206487 CD4+, CD8+, CD18+, CD44+, CD54+, and CD106+ cells then encircled and invaded some islets of the scid/scid mice 2 to 7 weeks after transfer.
2119 10206487 Fas ligand was not present in Western blotting.
2120 10206487 It is proposed that apoptosis commonly occurs in islet-infiltrating lymphocytes and that in the scid/scid adoptive-transfer model, the first islet-infiltrating cells are destroyed by programmed cell death independent of Fas ligand.
2121 10209507 Jejuna of patients with insulin-dependent diabetes mellitus (IDDM) show signs of immune activation.
2122 10209507 The roles of enteric viruses and food antigens as possible triggers in human insulin-dependent diabetes mellitus and the evidence that mucosal-associated homing receptors are important in both human and experimental diabetes prompted us to undertake an immunohistochemical study of intestinal specimens from patients with IDDM.
2123 10209507 We studied jejunal morphology and immunohistochemistry in 26 patients with IDDM, 13 of whom had the HLA-DQB1*0201 gene and therefore a higher risk of coeliac disease.
2124 10209507 The densities of T cells, CD4+, CD8+, and T cell receptor alpha/beta+ and gamma/delta+ cells in the epithelium and lamina propria were similar in patients and controls, but the patients had significantly more alpha 4/beta 7 integrin+ cells in the lamina propria (P = 0.006).
2125 10222028 In support of this interpretation, we found that the accessory molecules CD4, CD44, and B7-1 (all of which are involved in T cell co-stimulation) were cleaved by Phlogenzym, while CD3 and MHC class II molecules (which are involved in the recognition of antigens by T cells) and LFA-1 were unaffected.
2126 10231096 MHC class I and II molecules play a central role in the immune response against a variety of invading microorganisms and cells that have undergone malignant transformation by shaping the T cell repertoire in the thymus and by presenting peptide antigens from endogenous and exogenous antigens in the periphery to CD8+ cytotoxic T cells and CD4+ helper T cells.
2127 10331400 After activation in vitro with islet cell membrane antigens, the diabetes-inducing cell lines were comprised of both CD4+ CD8- T-cells and 10-30% B-cells.
2128 10337011 Therefore, in order to evaluate cytokine secretion by spleen and islet infiltrating T cells in NOD mice at different stages of the autoimmune process, we developed an ELISPOT assay that detects IL-2, IL-4, and interferon-gamma (IFN-gamma) secretion in vitro at the single-cell level.
2129 10337011 We showed that, whatever the age considered, IFN-gamma is predominantly secreted, and that no IL-4-secreting cells are detected in the islets of male and female NOD mice.
2130 10337011 Spleen cells from 8-week-old female NOD mice, which include regulatory suppressor T cells, do not secrete IL-4, either upon presentation of islet cell antigens in vitro, or after transfer in vivo, but do secrete IFN-gamma.
2131 10337011 IFN-gamma secretion by T cells from diabetic mice results from CD4 but not CD8 T cells in transfer experiments into NOD/severe combined immunodeficient (SCID) recipients.
2132 10337011 These results suggest that (i) detection of regulatory CD4 T cells in NOD mice is not paralleled by a Th2 response; (ii) beta cell destruction does not depend on a switch from a Th2 to a Th1-type response; and (iii) CD8 T cells do not participate in induction of diabetes by secreting IFN-gamma.
2133 10337011 Therefore, in order to evaluate cytokine secretion by spleen and islet infiltrating T cells in NOD mice at different stages of the autoimmune process, we developed an ELISPOT assay that detects IL-2, IL-4, and interferon-gamma (IFN-gamma) secretion in vitro at the single-cell level.
2134 10337011 We showed that, whatever the age considered, IFN-gamma is predominantly secreted, and that no IL-4-secreting cells are detected in the islets of male and female NOD mice.
2135 10337011 Spleen cells from 8-week-old female NOD mice, which include regulatory suppressor T cells, do not secrete IL-4, either upon presentation of islet cell antigens in vitro, or after transfer in vivo, but do secrete IFN-gamma.
2136 10337011 IFN-gamma secretion by T cells from diabetic mice results from CD4 but not CD8 T cells in transfer experiments into NOD/severe combined immunodeficient (SCID) recipients.
2137 10337011 These results suggest that (i) detection of regulatory CD4 T cells in NOD mice is not paralleled by a Th2 response; (ii) beta cell destruction does not depend on a switch from a Th2 to a Th1-type response; and (iii) CD8 T cells do not participate in induction of diabetes by secreting IFN-gamma.
2138 10395666 In addition, the secondary lymphoid organs of these mice harbored phenotypically normal CD4+ and CD8+ T cell compartments.
2139 10400139 Chemokine receptor CCR2 and CCR5 polymorphisms in children with insulin-dependent diabetes mellitus.
2140 10400139 Studies have shown the important roles of several regulatory and proinflammatory cytokines in insulin-dependent diabetes mellitus (IDDM).
2141 10400139 CC-chemokine receptors CCR2 and CCR5 bind chemokines that are involved in the trafficking of leukocytes in both basal and inflammatory states.
2142 10400139 A common 32-bp deletion mutation in the CCR5 gene (CCR5delta32) and a G-to-A nucleotide substitution in the CCR2 at position 190 (CCR2-64I) have recently been described.
2143 10400139 The role of this mutation in IDDM cannot be explained yet, but, because CCR2 mediates the chemotaxis of CD4+ and CD8+ T cells to areas of inflammation and because these cells play important roles in insulitis, a mutation in the CCR2 gene may contribute to the susceptibility to the disease.
2144 10400139 According to these results, the CCR2 gene may be a new candidate for the susceptibility locus of IDDM.
2145 10411548 Mice expressing lymphocytic choriomeningitis virus nucleoprotein (LCMV-NP) as a transgene in their beta cells develop insulin-dependent diabetes mellitus (IDDM) only after LCMV infection.
2146 10411548 Inoculation of plasmid DNA encoding the insulin B chain reduced the incidence of IDDM by 50% in this model.
2147 10411548 The insulin B-chain DNA vaccination was effective through induction of regulatory CD4 lymphocytes that react with the insulin B chain, secrete IL-4, and locally reduce activity of LCMV-NP-autoreactive cytotoxic T lymphocytes in the pancreatic draining lymph node.
2148 10426369 The ability of nonobese diabetic (NOD) mice to mount a cellular immune response to the secretory granule protein tyrosine phosphatase (PTP), phogrin was evaluated by immunization of 8- to 12-week-old animals with recombinant phogrin in complete Freund's adjuvant.
2149 10426369 The results demonstrate the feasibility of generating antigen-specific diabetes-inducing CD4+ cells by direct immunization of NOD mice and their potential use for further studies of the antigenic epitopes in the PTP family members.
2150 10430939 Prevalent CD8(+) T cell response against one peptide/MHC complex in autoimmune diabetes.
2151 10430939 Spontaneous autoimmune diabetes in nonobese diabetic (NOD) mice is the result of a CD4(+) and CD8(+) T cell-dependent autoimmune process directed against the pancreatic beta cells.
2152 10430939 Here, we define the structure of a peptide mimotope that elicits the proliferation, cytokine secretion, differentiation, and cytotoxicity of a diabetogenic H-2K(d)-restricted CD8(+) T cell specificity (NY8.3) that uses a T cell receptor alpha (TCRalpha) rearrangement frequently expressed by CD8(+) T cells propagated from the earliest insulitic lesions of NOD mice (Valpha17-Jalpha42 elements, often joined by the N-region sequence M-R-D/E).
2153 10430939 Stimulation of splenic CD8(+) T cells from single-chain 8. 3-TCRbeta-transgenic NOD mice with this mimotope leads to preferential expansion of T cells bearing an endogenously derived TCRalpha chain identical to the one used by their islet-associated CD8(+) T cells, which is also identical to the 8.3-TCRalpha sequence.
2154 10430939 This work demonstrates that beta cell-reactive CD8(+) T cells mount a prevalent response against a single peptide/MHC complex and provides one peptide ligand for CD8(+) T cells in autoimmune diabetes.
2155 10433099 CD4+ lymphocytes are the most important effector cells in autoimmune diabetes of NOD mice, although some role of CD8+ T cells has been demonstrated.
2156 10433099 However, it is unknown how CD4+ lymphocytes are able to destroy pancreatic beta-cells that do not express MHC (major histocompatibility complex) class II molecules.
2157 10433099 Apoptotic cell death mediated by an interaction of Fas with Fas ligand (FasL) could be a mechanism by which MHC class II-negative pancreatic beta-cells are destroyed by CD4+ T lymphocytes.
2158 10433099 IFN (interferon)-gamma, tumor necrosis factor-alpha, interleukin-1 and their combinations failed to enhance Fas expression.
2159 10433099 Unsorted activated splenocytes from diabetic NOD mice had cytotoxic T lymphocyte activity of a small degree against IFN-gamma-treated MIN6N8 cells with FasL upregulation.
2160 10433099 CD4+ lymphocytes are the most important effector cells in autoimmune diabetes of NOD mice, although some role of CD8+ T cells has been demonstrated.
2161 10433099 However, it is unknown how CD4+ lymphocytes are able to destroy pancreatic beta-cells that do not express MHC (major histocompatibility complex) class II molecules.
2162 10433099 Apoptotic cell death mediated by an interaction of Fas with Fas ligand (FasL) could be a mechanism by which MHC class II-negative pancreatic beta-cells are destroyed by CD4+ T lymphocytes.
2163 10433099 IFN (interferon)-gamma, tumor necrosis factor-alpha, interleukin-1 and their combinations failed to enhance Fas expression.
2164 10433099 Unsorted activated splenocytes from diabetic NOD mice had cytotoxic T lymphocyte activity of a small degree against IFN-gamma-treated MIN6N8 cells with FasL upregulation.
2165 10433099 CD4+ lymphocytes are the most important effector cells in autoimmune diabetes of NOD mice, although some role of CD8+ T cells has been demonstrated.
2166 10433099 However, it is unknown how CD4+ lymphocytes are able to destroy pancreatic beta-cells that do not express MHC (major histocompatibility complex) class II molecules.
2167 10433099 Apoptotic cell death mediated by an interaction of Fas with Fas ligand (FasL) could be a mechanism by which MHC class II-negative pancreatic beta-cells are destroyed by CD4+ T lymphocytes.
2168 10433099 IFN (interferon)-gamma, tumor necrosis factor-alpha, interleukin-1 and their combinations failed to enhance Fas expression.
2169 10433099 Unsorted activated splenocytes from diabetic NOD mice had cytotoxic T lymphocyte activity of a small degree against IFN-gamma-treated MIN6N8 cells with FasL upregulation.
2170 10433560 Substantial benefits are associated with these responses: Initially memory, then naive, CD4 cell counts may rise by 150-200 cells/mm3; CD8 cell numbers also rise sharply but then fall below pretreatment levels, presumably as antigenic stimuli driving the CD8 response decline; cellular activation markers decline; distortions in the T cell repertoire gradually lessen; and increases in proliferative responses to mitogens and recall antigens are more easily elicited.
2171 10439311 CD4+ and CD8+ T-cell clones from congenital rubella syndrome patients with IDDM recognize overlapping GAD65 protein epitopes.
2172 10439311 To fully characterize human glutamic acid decarboxylase (GAD)65 protein T-cell epitopes associated with insulin-dependent diabetes mellitus (IDDM), CTL clones specific to GAD65 protein antigens were isolated from two congenital rubella syndrome (CRS)-associated IDDM patients.
2173 10439311 Overlapping nonamer T-cell epitopes recognized by both CD4+ or CD8+ CTL clones within peptides GAD65(252-266) and GAD65(274-286) were identified as sequences bounded by GAD65(255-266) with 6/9 overlapping residues, and GAD65(276-285) with 8/9 overlapping residues, respectively, using two panels of overlapping peptide analogs in cytotoxicity assays.
2174 10439311 The antigenic GAD65 peptides elicited cytotoxic responses of peptide-specific CD4+ T-cell clones in the context of HLA DRB1*0404.
2175 10439311 The CD8+ T-cell clone specific to GAD65(255-263) was found to be restricted by HLA A3 and A11.
2176 10439311 Similarly, the CD8+ T-cell clone specific to GAD65(277-285) killed peptide-sensitized target cells expressing HLA B35 and B15.
2177 10439311 CD4+ and CD8+ T-cell clones from congenital rubella syndrome patients with IDDM recognize overlapping GAD65 protein epitopes.
2178 10439311 To fully characterize human glutamic acid decarboxylase (GAD)65 protein T-cell epitopes associated with insulin-dependent diabetes mellitus (IDDM), CTL clones specific to GAD65 protein antigens were isolated from two congenital rubella syndrome (CRS)-associated IDDM patients.
2179 10439311 Overlapping nonamer T-cell epitopes recognized by both CD4+ or CD8+ CTL clones within peptides GAD65(252-266) and GAD65(274-286) were identified as sequences bounded by GAD65(255-266) with 6/9 overlapping residues, and GAD65(276-285) with 8/9 overlapping residues, respectively, using two panels of overlapping peptide analogs in cytotoxicity assays.
2180 10439311 The antigenic GAD65 peptides elicited cytotoxic responses of peptide-specific CD4+ T-cell clones in the context of HLA DRB1*0404.
2181 10439311 The CD8+ T-cell clone specific to GAD65(255-263) was found to be restricted by HLA A3 and A11.
2182 10439311 Similarly, the CD8+ T-cell clone specific to GAD65(277-285) killed peptide-sensitized target cells expressing HLA B35 and B15.
2183 10439311 CD4+ and CD8+ T-cell clones from congenital rubella syndrome patients with IDDM recognize overlapping GAD65 protein epitopes.
2184 10439311 To fully characterize human glutamic acid decarboxylase (GAD)65 protein T-cell epitopes associated with insulin-dependent diabetes mellitus (IDDM), CTL clones specific to GAD65 protein antigens were isolated from two congenital rubella syndrome (CRS)-associated IDDM patients.
2185 10439311 Overlapping nonamer T-cell epitopes recognized by both CD4+ or CD8+ CTL clones within peptides GAD65(252-266) and GAD65(274-286) were identified as sequences bounded by GAD65(255-266) with 6/9 overlapping residues, and GAD65(276-285) with 8/9 overlapping residues, respectively, using two panels of overlapping peptide analogs in cytotoxicity assays.
2186 10439311 The antigenic GAD65 peptides elicited cytotoxic responses of peptide-specific CD4+ T-cell clones in the context of HLA DRB1*0404.
2187 10439311 The CD8+ T-cell clone specific to GAD65(255-263) was found to be restricted by HLA A3 and A11.
2188 10439311 Similarly, the CD8+ T-cell clone specific to GAD65(277-285) killed peptide-sensitized target cells expressing HLA B35 and B15.
2189 10450504 In the past decade, a wealth of information has accumulated through studies in non-obese diabetic (NOD) mice regarding the molecular and cellular events that participate in the progression to diabetes in insulin-dependent diabetes mellitus (IDDM).
2190 10450504 Here we describe a new NOD model for analyzing the role of TNF-alpha in IDDM, TNF-alpha-NOD mice.
2191 10450504 Although adoptive transfer studies demonstrated that TNF-alpha can enhance presentation of islet antigen to both effector CD4+ and CD8+ T cells, further investigations in TNF-alpha-NOD mice deficient in either CD4+ or CD8+ T cells demonstrated that diabetes progression is dependent on CD8+ T cells, with CD4+ T cells playing a lesser role.
2192 10450504 The data accumulating from TNF-alpha-NOD mice, described in this review, indicates novel pathways by which inflammatory stimuli can precipitate autoimmunity, and suggests newer approaches in the design of therapeutic treatments that prevent beta-cell destruction in IDDM.
2193 10453045 IL-12 and IL-12 antagonist administration to nonobese diabetic (NOD) mice accelerates and prevents insulin-dependent diabetes mellitus (IDDM), respectively.
2194 10453045 Nevertheless, wild-type and IL-12-deficient NOD mice developed similar insulitis and IDDM.
2195 10453045 Both in wild-type and IL-12-deficient NOD mice, approximately 20% of pancreas-infiltrating CD4+ T cells produced IFN-gamma, whereas very few produced IL-10 or IL-4, indicating that IDDM was associated with a type 1 T cell infiltrate in the target organ.
2196 10461865 Pancreatic sections were also examined for the influx of CD4 and CD8 T cells and macrophages following immunofluorescence staining.
2197 10461865 Immunohistochemical staining showed increasing numbers of CD4 and CD8 T cell subsets and macrophages within the islets and in exocrine, sinusoidal and peri-vascular regions.
2198 10461865 The present results show that cyclophosphamide administration to female NOD mice results in a rapid influx of CD4 and CD8 cells and macrophages.
2199 10461865 The marked up-regulation of inducible nitric oxide synthase in a selective proportion of macrophages, within the islets, immediately preceding and during the onset of diabetes suggests that nitric oxide released by islet macrophages may be an important molecular mediator of beta cell destruction in this accelerated model of insulin-dependent diabetes mellitus.
2200 10461865 Pancreatic sections were also examined for the influx of CD4 and CD8 T cells and macrophages following immunofluorescence staining.
2201 10461865 Immunohistochemical staining showed increasing numbers of CD4 and CD8 T cell subsets and macrophages within the islets and in exocrine, sinusoidal and peri-vascular regions.
2202 10461865 The present results show that cyclophosphamide administration to female NOD mice results in a rapid influx of CD4 and CD8 cells and macrophages.
2203 10461865 The marked up-regulation of inducible nitric oxide synthase in a selective proportion of macrophages, within the islets, immediately preceding and during the onset of diabetes suggests that nitric oxide released by islet macrophages may be an important molecular mediator of beta cell destruction in this accelerated model of insulin-dependent diabetes mellitus.
2204 10461865 Pancreatic sections were also examined for the influx of CD4 and CD8 T cells and macrophages following immunofluorescence staining.
2205 10461865 Immunohistochemical staining showed increasing numbers of CD4 and CD8 T cell subsets and macrophages within the islets and in exocrine, sinusoidal and peri-vascular regions.
2206 10461865 The present results show that cyclophosphamide administration to female NOD mice results in a rapid influx of CD4 and CD8 cells and macrophages.
2207 10461865 The marked up-regulation of inducible nitric oxide synthase in a selective proportion of macrophages, within the islets, immediately preceding and during the onset of diabetes suggests that nitric oxide released by islet macrophages may be an important molecular mediator of beta cell destruction in this accelerated model of insulin-dependent diabetes mellitus.
2208 10470079 Type 1 diabetes is an autoimmune disease in which the insulin-producing pancreatic beta cells are destroyed at an early age by an immune process that involves both CD4 and CD8 T lymphocytes.
2209 10470079 The peptide recognized by the cells is in the same region of the insulin B chain as the epitope recognized by previously isolated pathogenic CD4 T cells.
2210 10470079 Type 1 diabetes is an autoimmune disease in which the insulin-producing pancreatic beta cells are destroyed at an early age by an immune process that involves both CD4 and CD8 T lymphocytes.
2211 10470079 The peptide recognized by the cells is in the same region of the insulin B chain as the epitope recognized by previously isolated pathogenic CD4 T cells.
2212 10476932 Insulin-dependent diabetes mellitus (IDDM) in the nonobese diabetes (NOD) mouse model is thought to be an autoimmune CD4 Th1-like cell-mediated disease.
2213 10476932 We tested the efficacy of oral use of interferon-alpha (IFN-alpha) therapy on IDDM in NOD mice.
2214 10476932 Using urine and blood sugar levels as indicators of IDDM, oral administration of murine IFN-alpha (100 IU/body) to NOD mice significantly delayed the onset of symptomatic diabetes.
2215 10476932 However, oral use of IFN-alpha did not prevent diabetic NOD mice from losing weight once NOD mice were symptomatic, suggesting that orally administered IFN-alpha is a prophylactic rather than therapeutic approach to the management of IDDM.
2216 10480599 Neonatal porcine islet cells induce human CD4+, but not CD8+, lymphocyte proliferation and resist cell-mediated cytolytic injury in vitro.
2217 10480600 Insulin B-chain reactive CD4+ regulatory T-cells induced by oral insulin treatment protect from type 1 diabetes by blocking the cytokine secretion and pancreatic infiltration of diabetogenic effector T-cells.
2218 10480600 We demonstrate that oral insulin feeding of NOD mice induces the function of insulin B-chain reactive CD4+ regulatory T-cells, which compete with diabetogenic effector T-cells for the recognition of insulin in NOD.Scid recipient mice.
2219 10480600 These effector T-cells become deprived of interleukin (IL)-2 and interferon (IFN)-gamma and are unable to expand and migrate to the pancreas.
2220 10480600 Type 1 diabetes-protective splenic regulatory T-cells secrete relatively little transforming growth factor (TGF)-beta1, suggesting that TGF-beta may not contribute to the inactivation of effector T-cells in NOD.Scid recipients.
2221 10480600 Insulin B-chain reactive CD4+ regulatory T-cells induced by oral insulin treatment protect from type 1 diabetes by blocking the cytokine secretion and pancreatic infiltration of diabetogenic effector T-cells.
2222 10480600 We demonstrate that oral insulin feeding of NOD mice induces the function of insulin B-chain reactive CD4+ regulatory T-cells, which compete with diabetogenic effector T-cells for the recognition of insulin in NOD.Scid recipient mice.
2223 10480600 These effector T-cells become deprived of interleukin (IL)-2 and interferon (IFN)-gamma and are unable to expand and migrate to the pancreas.
2224 10480600 Type 1 diabetes-protective splenic regulatory T-cells secrete relatively little transforming growth factor (TGF)-beta1, suggesting that TGF-beta may not contribute to the inactivation of effector T-cells in NOD.Scid recipients.
2225 10499191 Lipid parameters (triglycerides, cholesterol, apolipoproteins A1 and B) were studied as well as nutritional and inflammatory markers (albumin, prealbumin, transferrin, haptoglobin, orosomucoid, C-reactive protein), endocrine and cytokine parameters (thyrotropin, cortisol, leptin, interleukin-6), HIV viral load and CD4-lymphocyte count.
2226 10499817 Both Zn++ and Cu++ show a concentration-dependent inactivation of a protease essential for the proliferation of the AIDS virus HIV-1, while zinc can help prevent diabetes complications through its intracellular activation of the enzyme sorbitol dehydrogenase (SDH).
2227 10499817 AIDS viruses (HIVs) enter immune cells with the aid of the CD4 cell surface receptor in combination with a number of co-receptors which include CCR3, CCR5 and CXCR4.
2228 10499817 Remarkably, the cell surface receptor for LTB4 (BLTR) also seems to act as a co-receptor for CD4, which helps HIVs to infect immune cells.
2229 10499817 The Th2 cytokine II-4 increases the number of CXCR4 and BLTR co-receptors, as a result of which, under Th2, the HIV strains that infect immune cells are precisely those that are best able to accelerate the AIDS disease process.
2230 10499817 Both Zn++ and Cu++ show a concentration-dependent inactivation of a protease essential for the proliferation of the AIDS virus HIV-1, while zinc can help prevent diabetes complications through its intracellular activation of the enzyme sorbitol dehydrogenase (SDH).
2231 10499817 AIDS viruses (HIVs) enter immune cells with the aid of the CD4 cell surface receptor in combination with a number of co-receptors which include CCR3, CCR5 and CXCR4.
2232 10499817 Remarkably, the cell surface receptor for LTB4 (BLTR) also seems to act as a co-receptor for CD4, which helps HIVs to infect immune cells.
2233 10499817 The Th2 cytokine II-4 increases the number of CXCR4 and BLTR co-receptors, as a result of which, under Th2, the HIV strains that infect immune cells are precisely those that are best able to accelerate the AIDS disease process.
2234 10512358 In a number of animal models of spontaneous autoimmune diabetes, pathogenesis has been highly correlated with autoreactive T-cell production of the type 1 cytokine interferon-gamma (IFN-gamma), while protection from disease was associated with type 2 cytokines such as interleukin (IL)-4.
2235 10512358 IL-10 has generally been associated with immunosuppression, including the modulation of class II expression on antigen-presenting cells and the generation of regulatory CD4 T-cells.
2236 10524496 Double transgenic (dTg) mice expressing the hemagglutinin (HA) of influenza virus under the insulin promoter and the TCR specific for the immunodominant CD4 T cell epitope of HA (HA110-120) develop insulin-dependent diabetes mellitus (IDDM).
2237 10549569 Type I diabetes, also known as insulin-dependent diabetes mellitus (IDDM) results from the destruction of insulin-producing pancreatic beta cells by a progressive beta cell-specific autoimmune process.
2238 10549569 Macrophages are primary contributors to the creation of the immune environment conducive to the development and activation of beta cell-specific Th1-type CD4+ T cells and CD8+ cytotoxic T cells that cause autoimmune diabetes in NOD mice.
2239 10549569 CD4+ and CD8+ T cells are both believed to be important for the destruction of beta cells.
2240 10549569 In this way, macrophages, CD4+ T cells and CD8+ T cells act synergistically to kill the beta cells in conjunction with beta cell autoantigens and MHC class I and class II antigens, resulting in the onset of autoimmune type I diabetes.
2241 10549569 Type I diabetes, also known as insulin-dependent diabetes mellitus (IDDM) results from the destruction of insulin-producing pancreatic beta cells by a progressive beta cell-specific autoimmune process.
2242 10549569 Macrophages are primary contributors to the creation of the immune environment conducive to the development and activation of beta cell-specific Th1-type CD4+ T cells and CD8+ cytotoxic T cells that cause autoimmune diabetes in NOD mice.
2243 10549569 CD4+ and CD8+ T cells are both believed to be important for the destruction of beta cells.
2244 10549569 In this way, macrophages, CD4+ T cells and CD8+ T cells act synergistically to kill the beta cells in conjunction with beta cell autoantigens and MHC class I and class II antigens, resulting in the onset of autoimmune type I diabetes.
2245 10549569 Type I diabetes, also known as insulin-dependent diabetes mellitus (IDDM) results from the destruction of insulin-producing pancreatic beta cells by a progressive beta cell-specific autoimmune process.
2246 10549569 Macrophages are primary contributors to the creation of the immune environment conducive to the development and activation of beta cell-specific Th1-type CD4+ T cells and CD8+ cytotoxic T cells that cause autoimmune diabetes in NOD mice.
2247 10549569 CD4+ and CD8+ T cells are both believed to be important for the destruction of beta cells.
2248 10549569 In this way, macrophages, CD4+ T cells and CD8+ T cells act synergistically to kill the beta cells in conjunction with beta cell autoantigens and MHC class I and class II antigens, resulting in the onset of autoimmune type I diabetes.
2249 10549628 Autoreactive CD4+ T cells protect from autoimmune diabetes via bystander suppression using the IL-4/Stat6 pathway.
2250 10549628 Here, we report the generation and characterization of insulin B chain-specific "autoreactive" CD4+ regulatory T cells that locally suppress diabetogenic T cell responses against an unrelated self-antigen (viral transgene) in a virus-induced model for type 1 diabetes.
2251 10549628 Autoreactive CD4+ T cells protect from autoimmune diabetes via bystander suppression using the IL-4/Stat6 pathway.
2252 10549628 Here, we report the generation and characterization of insulin B chain-specific "autoreactive" CD4+ regulatory T cells that locally suppress diabetogenic T cell responses against an unrelated self-antigen (viral transgene) in a virus-induced model for type 1 diabetes.
2253 10550215 The role of CD4 and CD8 T cells in the development of autoimmune diabetes.
2254 10553062 The role of the STAT4 signaling pathway in autoimmune diabetes was investigated using the rat insulin promoter lymphocytic choriomeningitis virus model of virally induced autoimmune diabetes.
2255 10553062 Abrogation of STAT4 signaling significantly reduced the development of CD4+-T cell-dependent but not CD4+-T cell-independent diabetes, illustrating the fine-tuned kinetics involved in the pathogenesis of autoimmunity.
2256 10553062 However, the absence of STAT4 did not prevent the generation of autoreactive Th1/Tc1 T cell responses, as well as protective antiviral immunity.
2257 10553062 Protection from insulin-dependent diabetes mellitus was associated with decreased numbers of autoreactive CTL precursors in the pancreas and the spleen and a general as well as Ag-specific reduction of IFN-gamma secretion by T lymphocytes.
2258 10553062 Selective inhibition of the STAT4 signal transduction pathway might constitute a novel and attractive approach to prevent clinical insulin-dependent diabetes mellitus in prediabetic individuals at risk.
2259 10553102 As few as 500 CD4high islet-infiltrating CD4+ T cells transferred insulin-dependent diabetes mellitus to CD8 reconstituted NOD-SCID mice within 30 days of transfer.
2260 10553102 In contrast, CD4high T cells isolated from either NOD spleen or salivary glands did not transfer insulin-dependent diabetes mellitus into similar CD8-reconstituted NOD-SCID recipients.
2261 10556546 Our group is examining the role that CD4(+) and CD8(+) T cells play in IDDM in the NOD mouse, as it is known that both T cell subsets are required for onset of disease.
2262 10556546 We raised GAD peptide-specific CD8(+) T cells by immunising NOD mice with the GAD peptide alongside an irrelevant peptide that induced a CD4(+) T cell response.
2263 10556546 In order to maintain these peptide specific T cells in vitro and generate clones, it was found that antibodies specific to CD4(+) and MHC class II molecules needed to be included in the culture medium.
2264 10556546 Our group is examining the role that CD4(+) and CD8(+) T cells play in IDDM in the NOD mouse, as it is known that both T cell subsets are required for onset of disease.
2265 10556546 We raised GAD peptide-specific CD8(+) T cells by immunising NOD mice with the GAD peptide alongside an irrelevant peptide that induced a CD4(+) T cell response.
2266 10556546 In order to maintain these peptide specific T cells in vitro and generate clones, it was found that antibodies specific to CD4(+) and MHC class II molecules needed to be included in the culture medium.
2267 10556546 Our group is examining the role that CD4(+) and CD8(+) T cells play in IDDM in the NOD mouse, as it is known that both T cell subsets are required for onset of disease.
2268 10556546 We raised GAD peptide-specific CD8(+) T cells by immunising NOD mice with the GAD peptide alongside an irrelevant peptide that induced a CD4(+) T cell response.
2269 10556546 In order to maintain these peptide specific T cells in vitro and generate clones, it was found that antibodies specific to CD4(+) and MHC class II molecules needed to be included in the culture medium.
2270 10580422 Although CD8+ T-cells are observed within the grafts at later time points, CD4+ T-cells predominate until the graft is destroyed.
2271 10580639 In the past few years, considerable evidence has accumulated to suggest the existence of functionally polarized responses by the CD4+ T helper (Th)--and the CD8+ T cytotoxic (Tc)-cell subsets that depend on the cytokines they produce.
2272 10586049 In vitro studies indicate that the effect of the Ab is independent of CD4 coreceptor function, as Ab treatment also inhibits proliferation and induces a persistent anergy in naive CD4 T cells stimulated by anti-CD3/CD28.
2273 10593564 Both are used to model human insulin-dependent diabetes mellitus (IDDM).
2274 10593564 We now report that the phenotype of NK T cells in the rat is alphabetaTcR+ CD8+ CD4-, comparable to the NK T cell phenotype reported for humans, which is alphabetaTcR+ CD4- Valpha24-JalphaQ, and either CD8- or CD8alphaalpha+.
2275 10593564 Because RT6+ T cells are deficient in DP-BB rats, and because depletion of cells expressing RT6 induces IDDM in DR-BB rats, we studied NK T cells for expression of this antigen.
2276 10594693 The number of CD4- CD8-, CD4+ CD8-, CD4- CD8+ and CD4+ CD8+ subsets was not different between BBDP and BBDR rat thymocytes, whereas spleen and lymph nodes in BBDP rats undergo severe T-cell lymphopenia.
2277 10594693 Notably, mature CD4- CD8+ [T-cell receptor (TCR)-alphabeta+ and CD5+] cells are certainly present in the BBDP rat thymus, unlike some previous reports, suggesting that the differentiation of CD4- CD8+ from CD4+ CD8+ cells occurs normally in the BBDP rat thymus.
2278 10594693 The number of CD4- CD8-, CD4+ CD8-, CD4- CD8+ and CD4+ CD8+ subsets was not different between BBDP and BBDR rat thymocytes, whereas spleen and lymph nodes in BBDP rats undergo severe T-cell lymphopenia.
2279 10594693 Notably, mature CD4- CD8+ [T-cell receptor (TCR)-alphabeta+ and CD5+] cells are certainly present in the BBDP rat thymus, unlike some previous reports, suggesting that the differentiation of CD4- CD8+ from CD4+ CD8+ cells occurs normally in the BBDP rat thymus.
2280 10605017 We now demonstrate that regulatory splenocytes belong to the CD4+ CD62Lhigh T cell subset that comprises a vast majority of naive cells producing low levels of IL-2 and IFN-gamma and no IL-4 and IL-10 upon in vitro stimulation.
2281 10605017 Consistently, the inhibition of diabetes transfer was not mediated by IL-4 and IL-10.
2282 10605017 The phenotypic and functional characteristics of protective CD4+ CD62L+ cells suggest they are different from Th2-, Tr1-, and NK T-type cells, reported to be implicated in the control of diabetes in NOD mice, and may represent a new immunoregulatory population.
2283 10605017 We now demonstrate that regulatory splenocytes belong to the CD4+ CD62Lhigh T cell subset that comprises a vast majority of naive cells producing low levels of IL-2 and IFN-gamma and no IL-4 and IL-10 upon in vitro stimulation.
2284 10605017 Consistently, the inhibition of diabetes transfer was not mediated by IL-4 and IL-10.
2285 10605017 The phenotypic and functional characteristics of protective CD4+ CD62L+ cells suggest they are different from Th2-, Tr1-, and NK T-type cells, reported to be implicated in the control of diabetes in NOD mice, and may represent a new immunoregulatory population.
2286 10610182 In transgenic mice, we have expressed three human components involved in T-cell recognition of an MS-relevant autoantigen presented by the HLA-DR2 molecule: DRA*0101/DRB1*1501 (HLA-DR2), an MHC class II candidate MS susceptibility genes found in individuals of European descent; a T-cell receptor (TCR) from an MS-patient-derived T-cell clone specific for the HLA-DR2 bound immunodominant myelin basic protein (MBP) 4102 peptide; and the human CD4 coreceptor.
2287 10610182 When DR2 and TCR double-transgenic mice were backcrossed twice to Rag2 (for recombination-activating gene 2)-deficient mice, the incidence of spontaneous disease increased, demonstrating that T cells specific for the HLA-DR2 bound MBP peptide are sufficient and necessary for development of disease.
2288 10620608 The diabetes was accompanied by severe insulitis composed of both T cells (CD4(+) and CD8(+)) and B cells.
2289 10620608 T cells from the diabetic mice secreted large amounts of interferon gamma, but not interleukin 4, in response to DQ8(+) islets and the putative islet autoantigens, insulin and glutamic acid decarboxylase (GAD).
2290 10620608 In conclusion, substitution of HLA-DQA1*0301/DQB1*0302, but not HLA-DQA1*0103/DQB1*0601, for murine MHC class II provokes autoimmune diabetes in non-diabetes-prone rat insulin promoter (RIP).B7-1 C57BL/6 mice.
2291 10631549 In the nonobese diabetic mouse model, there is new evidence that insulin plays an important role: not only is it an antigen for pathogenic CD4+ T cells but also it is recognised by highly diabetogenic CD8+ T cells.
2292 10637268 Neonatal tumor necrosis factor alpha promotes diabetes in nonobese diabetic mice by CD154-independent antigen presentation to CD8(+) T cells.
2293 10637268 Here we show that TNF-alpha promotes autoaggression of both effector CD4(+) and CD8(+) T cells.
2294 10637268 Whereas CD8(+) T cells are critical for diabetes progression, CD4(+) T cells play a lesser role.
2295 10637268 TNF-alpha-mediated diabetes development was not dependent on CD154-CD40 signals or activated CD4(+) T cells.
2296 10637268 Instead, it appears that TNF-alpha can promote cross-presentation of islet antigen to CD8(+) T cells using a unique CD40-CD154-independent pathway.
2297 10637268 Neonatal tumor necrosis factor alpha promotes diabetes in nonobese diabetic mice by CD154-independent antigen presentation to CD8(+) T cells.
2298 10637268 Here we show that TNF-alpha promotes autoaggression of both effector CD4(+) and CD8(+) T cells.
2299 10637268 Whereas CD8(+) T cells are critical for diabetes progression, CD4(+) T cells play a lesser role.
2300 10637268 TNF-alpha-mediated diabetes development was not dependent on CD154-CD40 signals or activated CD4(+) T cells.
2301 10637268 Instead, it appears that TNF-alpha can promote cross-presentation of islet antigen to CD8(+) T cells using a unique CD40-CD154-independent pathway.
2302 10637268 Neonatal tumor necrosis factor alpha promotes diabetes in nonobese diabetic mice by CD154-independent antigen presentation to CD8(+) T cells.
2303 10637268 Here we show that TNF-alpha promotes autoaggression of both effector CD4(+) and CD8(+) T cells.
2304 10637268 Whereas CD8(+) T cells are critical for diabetes progression, CD4(+) T cells play a lesser role.
2305 10637268 TNF-alpha-mediated diabetes development was not dependent on CD154-CD40 signals or activated CD4(+) T cells.
2306 10637268 Instead, it appears that TNF-alpha can promote cross-presentation of islet antigen to CD8(+) T cells using a unique CD40-CD154-independent pathway.
2307 10668191 Insulin-dependent diabetes mellitus (IDDM) is caused by autoimmune destruction of pancreatic beta cells with the primary mechanism being cell mediated.
2308 10668191 Since the diabetes-prone BB rat is lymphopenic, with a reduction of both CD4 and CD8 cells, the continuous failure of dCF treated animals to develop diabetes may have been due to generalized immunosuppression.
2309 10683375 IL-1alpha, IL-1beta, and IFN-gamma mark beta cells for Fas-dependent destruction by diabetogenic CD4(+) T lymphocytes.
2310 10683375 Cytokines such as IL-1alpha, IL-1beta, and IFN-gamma have long been implicated in the pathogenesis of autoimmune diabetes, but the mechanisms through which they promote diabetogenesis remain unclear.
2311 10683375 Here we show that CD4(+) T lymphocytes propagated from transgenic nonobese diabetic (NOD) mice expressing the highly diabetogenic, beta cell-specific 4.1-T-cell receptor (4.1-TCR) can kill IL-1alpha-, IL-1beta-, and IFN-gamma-treated beta cells from NOD mice.
2312 10683375 Abrogation of Fas expression in 4.1-TCR-transgenic NOD mice afforded nearly complete protection from diabetes and did not interfere with the development of the transgenic CD4(+) T cells or with their ability to cause insulitis.
2313 10683375 These data demonstrate a novel mechanism of action of IL-1alpha, IL-1beta, and IFN-gamma in autoimmune diabetes, whereby these cytokines mark beta cells for Fas-dependent lysis by autoreactive CD4(+) T cells.
2314 10683375 IL-1alpha, IL-1beta, and IFN-gamma mark beta cells for Fas-dependent destruction by diabetogenic CD4(+) T lymphocytes.
2315 10683375 Cytokines such as IL-1alpha, IL-1beta, and IFN-gamma have long been implicated in the pathogenesis of autoimmune diabetes, but the mechanisms through which they promote diabetogenesis remain unclear.
2316 10683375 Here we show that CD4(+) T lymphocytes propagated from transgenic nonobese diabetic (NOD) mice expressing the highly diabetogenic, beta cell-specific 4.1-T-cell receptor (4.1-TCR) can kill IL-1alpha-, IL-1beta-, and IFN-gamma-treated beta cells from NOD mice.
2317 10683375 Abrogation of Fas expression in 4.1-TCR-transgenic NOD mice afforded nearly complete protection from diabetes and did not interfere with the development of the transgenic CD4(+) T cells or with their ability to cause insulitis.
2318 10683375 These data demonstrate a novel mechanism of action of IL-1alpha, IL-1beta, and IFN-gamma in autoimmune diabetes, whereby these cytokines mark beta cells for Fas-dependent lysis by autoreactive CD4(+) T cells.
2319 10683375 IL-1alpha, IL-1beta, and IFN-gamma mark beta cells for Fas-dependent destruction by diabetogenic CD4(+) T lymphocytes.
2320 10683375 Cytokines such as IL-1alpha, IL-1beta, and IFN-gamma have long been implicated in the pathogenesis of autoimmune diabetes, but the mechanisms through which they promote diabetogenesis remain unclear.
2321 10683375 Here we show that CD4(+) T lymphocytes propagated from transgenic nonobese diabetic (NOD) mice expressing the highly diabetogenic, beta cell-specific 4.1-T-cell receptor (4.1-TCR) can kill IL-1alpha-, IL-1beta-, and IFN-gamma-treated beta cells from NOD mice.
2322 10683375 Abrogation of Fas expression in 4.1-TCR-transgenic NOD mice afforded nearly complete protection from diabetes and did not interfere with the development of the transgenic CD4(+) T cells or with their ability to cause insulitis.
2323 10683375 These data demonstrate a novel mechanism of action of IL-1alpha, IL-1beta, and IFN-gamma in autoimmune diabetes, whereby these cytokines mark beta cells for Fas-dependent lysis by autoreactive CD4(+) T cells.
2324 10683375 IL-1alpha, IL-1beta, and IFN-gamma mark beta cells for Fas-dependent destruction by diabetogenic CD4(+) T lymphocytes.
2325 10683375 Cytokines such as IL-1alpha, IL-1beta, and IFN-gamma have long been implicated in the pathogenesis of autoimmune diabetes, but the mechanisms through which they promote diabetogenesis remain unclear.
2326 10683375 Here we show that CD4(+) T lymphocytes propagated from transgenic nonobese diabetic (NOD) mice expressing the highly diabetogenic, beta cell-specific 4.1-T-cell receptor (4.1-TCR) can kill IL-1alpha-, IL-1beta-, and IFN-gamma-treated beta cells from NOD mice.
2327 10683375 Abrogation of Fas expression in 4.1-TCR-transgenic NOD mice afforded nearly complete protection from diabetes and did not interfere with the development of the transgenic CD4(+) T cells or with their ability to cause insulitis.
2328 10683375 These data demonstrate a novel mechanism of action of IL-1alpha, IL-1beta, and IFN-gamma in autoimmune diabetes, whereby these cytokines mark beta cells for Fas-dependent lysis by autoreactive CD4(+) T cells.
2329 10684857 CD40 ligand (CD154) triggers a short-term CD4(+) T cell activation response that results in secretion of immunomodulatory cytokines and apoptosis.
2330 10684857 Signals generated through CD28-B7 and CD40 ligand (CD40L)-CD40 interactions have been shown to be crucial for the induction of long-term allograft survivability.
2331 10684857 To investigate potential mechanisms of CD40L-induced allograft acceptance, we coimmobilized hu5C8 with suboptimal amounts of anti-CD3 to stimulate CD4(+) T cells.
2332 10684857 We now report that anti-CD3/CD40L costimulation results in CD28-independent activation and subsequent deletion of resting T cells.
2333 10684857 Coligation of CD3 and CD40L increased expression of CD69, CD25, and CD54 on CD4(+) T cells.
2334 10684857 We also found that costimulation with anti-CD3/CD40L resulted in enhanced production of interleukin (IL)-10, interferon gamma, and tumor necrosis factor alpha but not IL-2 or IL-6.
2335 10684857 Consistent with that observation, anti-CD3/CD40L did not enhance the antiapoptotic proteins Bcl-2 and Bcl-xL.
2336 10684857 Further, the addition of CD28 at 24 h failed to rescue those cells induced to die after costimulation with anti-CD3/CD40L.
2337 10684857 CD40 ligand (CD154) triggers a short-term CD4(+) T cell activation response that results in secretion of immunomodulatory cytokines and apoptosis.
2338 10684857 Signals generated through CD28-B7 and CD40 ligand (CD40L)-CD40 interactions have been shown to be crucial for the induction of long-term allograft survivability.
2339 10684857 To investigate potential mechanisms of CD40L-induced allograft acceptance, we coimmobilized hu5C8 with suboptimal amounts of anti-CD3 to stimulate CD4(+) T cells.
2340 10684857 We now report that anti-CD3/CD40L costimulation results in CD28-independent activation and subsequent deletion of resting T cells.
2341 10684857 Coligation of CD3 and CD40L increased expression of CD69, CD25, and CD54 on CD4(+) T cells.
2342 10684857 We also found that costimulation with anti-CD3/CD40L resulted in enhanced production of interleukin (IL)-10, interferon gamma, and tumor necrosis factor alpha but not IL-2 or IL-6.
2343 10684857 Consistent with that observation, anti-CD3/CD40L did not enhance the antiapoptotic proteins Bcl-2 and Bcl-xL.
2344 10684857 Further, the addition of CD28 at 24 h failed to rescue those cells induced to die after costimulation with anti-CD3/CD40L.
2345 10684857 CD40 ligand (CD154) triggers a short-term CD4(+) T cell activation response that results in secretion of immunomodulatory cytokines and apoptosis.
2346 10684857 Signals generated through CD28-B7 and CD40 ligand (CD40L)-CD40 interactions have been shown to be crucial for the induction of long-term allograft survivability.
2347 10684857 To investigate potential mechanisms of CD40L-induced allograft acceptance, we coimmobilized hu5C8 with suboptimal amounts of anti-CD3 to stimulate CD4(+) T cells.
2348 10684857 We now report that anti-CD3/CD40L costimulation results in CD28-independent activation and subsequent deletion of resting T cells.
2349 10684857 Coligation of CD3 and CD40L increased expression of CD69, CD25, and CD54 on CD4(+) T cells.
2350 10684857 We also found that costimulation with anti-CD3/CD40L resulted in enhanced production of interleukin (IL)-10, interferon gamma, and tumor necrosis factor alpha but not IL-2 or IL-6.
2351 10684857 Consistent with that observation, anti-CD3/CD40L did not enhance the antiapoptotic proteins Bcl-2 and Bcl-xL.
2352 10684857 Further, the addition of CD28 at 24 h failed to rescue those cells induced to die after costimulation with anti-CD3/CD40L.
2353 10697437 The number of CD4+ T lymphocytes co-expressing CD45RA and CD45RO antigens were statistically higher in the patients with recently diagnosed insulin-dependent diabetes mellitus.
2354 10706679 Inhibition of autoimmune diabetes by Fas ligand: the paradox is solved.
2355 10706679 Pretreatment of lymphocytes with soluble FasL (sFasL) also inhibited diabetes transfer. sFasL treatment decreased the number of CD4+CD45RBlow cells and increased the number of propidium iodide-stained cells among CD4+CD45RBlow cells, suggesting that sFasL induces apoptosis on CD4+CD45RBlow "memory" cells.
2356 10706696 Furthermore, the mechanism by which diabetes is transferred by a Tg Th2 T cell clone differs from that of the original CD4+ Th1 BDC-2.5 T cell clone made in this laboratory.
2357 10719672 Treatment of prediabetic mice with the pancreatic islet autoantigen insulin, by aerosol or intranasal delivery, reduces the incidence of diabetes and is associated with induction of CD8 (alpha alpha) gamma delta T cells, small numbers of which prevent adoptive transfer of diabetes.
2358 10719672 We examine the evidence for gamma delta T cells in mucosal tolerance and discuss possible mechanisms underlying the induction and action of insulin-induced CD8 gamma delta regulatory T cells.
2359 10719672 In contrast, intranasal (pro)insulin peptide, or oral insulin which is degraded in the gut, induces CD4 regulatory cells.
2360 10725754 Identification of a CD8 T cell that can independently mediate autoimmune diabetes development in the complete absence of CD4 T cell helper functions.
2361 10725754 Previous work has indicated that an important component for the initiation of autoimmune insulin-dependent diabetes mellitus (IDDM) in the NOD mouse model entails MHC class I-restricted CD8 T cell responses against pancreatic beta cell Ags.
2362 10725754 However, unless previously activated in vitro, such CD8 T cells have previously been thought to require helper functions provided by MHC class II-restricted CD4 T cells to exert their full diabetogenic effects.
2363 10725754 In this study, we show that IDDM development is greatly accelerated in a stock of NOD mice expressing TCR transgenes derived from a MHC class I-restricted CD8 T cell clone (designated AI4) previously found to contribute to the earliest preclinical stages of pancreatic beta cell destruction.
2364 10725754 Importantly, these TCR transgenic NOD mice (designated NOD.AI4alphabeta Tg) continued to develop IDDM at a greatly accelerated rate when residual CD4 helper T cells were eliminated by introduction of the scid mutation or a functionally inactivated CD4 allele.
2365 10725754 In a previously described stock of NOD mice expressing TCR transgenes derived from another MHC class I-restricted beta cell autoreactive T cell clone, IDDM development was retarded by elimination of residual CD4 T cells.
2366 10725754 Hence, there is variability in the helper dependence of CD8 T cells contributing to the development of autoimmune IDDM.
2367 10725754 The AI4 clonotype represents the first CD8 T cell with a demonstrated ability to progress from a naive to functionally activated state and rapidly mediate autoimmune IDDM development in the complete absence of CD4 T cell helper functions.
2368 10725754 Identification of a CD8 T cell that can independently mediate autoimmune diabetes development in the complete absence of CD4 T cell helper functions.
2369 10725754 Previous work has indicated that an important component for the initiation of autoimmune insulin-dependent diabetes mellitus (IDDM) in the NOD mouse model entails MHC class I-restricted CD8 T cell responses against pancreatic beta cell Ags.
2370 10725754 However, unless previously activated in vitro, such CD8 T cells have previously been thought to require helper functions provided by MHC class II-restricted CD4 T cells to exert their full diabetogenic effects.
2371 10725754 In this study, we show that IDDM development is greatly accelerated in a stock of NOD mice expressing TCR transgenes derived from a MHC class I-restricted CD8 T cell clone (designated AI4) previously found to contribute to the earliest preclinical stages of pancreatic beta cell destruction.
2372 10725754 Importantly, these TCR transgenic NOD mice (designated NOD.AI4alphabeta Tg) continued to develop IDDM at a greatly accelerated rate when residual CD4 helper T cells were eliminated by introduction of the scid mutation or a functionally inactivated CD4 allele.
2373 10725754 In a previously described stock of NOD mice expressing TCR transgenes derived from another MHC class I-restricted beta cell autoreactive T cell clone, IDDM development was retarded by elimination of residual CD4 T cells.
2374 10725754 Hence, there is variability in the helper dependence of CD8 T cells contributing to the development of autoimmune IDDM.
2375 10725754 The AI4 clonotype represents the first CD8 T cell with a demonstrated ability to progress from a naive to functionally activated state and rapidly mediate autoimmune IDDM development in the complete absence of CD4 T cell helper functions.
2376 10725754 Identification of a CD8 T cell that can independently mediate autoimmune diabetes development in the complete absence of CD4 T cell helper functions.
2377 10725754 Previous work has indicated that an important component for the initiation of autoimmune insulin-dependent diabetes mellitus (IDDM) in the NOD mouse model entails MHC class I-restricted CD8 T cell responses against pancreatic beta cell Ags.
2378 10725754 However, unless previously activated in vitro, such CD8 T cells have previously been thought to require helper functions provided by MHC class II-restricted CD4 T cells to exert their full diabetogenic effects.
2379 10725754 In this study, we show that IDDM development is greatly accelerated in a stock of NOD mice expressing TCR transgenes derived from a MHC class I-restricted CD8 T cell clone (designated AI4) previously found to contribute to the earliest preclinical stages of pancreatic beta cell destruction.
2380 10725754 Importantly, these TCR transgenic NOD mice (designated NOD.AI4alphabeta Tg) continued to develop IDDM at a greatly accelerated rate when residual CD4 helper T cells were eliminated by introduction of the scid mutation or a functionally inactivated CD4 allele.
2381 10725754 In a previously described stock of NOD mice expressing TCR transgenes derived from another MHC class I-restricted beta cell autoreactive T cell clone, IDDM development was retarded by elimination of residual CD4 T cells.
2382 10725754 Hence, there is variability in the helper dependence of CD8 T cells contributing to the development of autoimmune IDDM.
2383 10725754 The AI4 clonotype represents the first CD8 T cell with a demonstrated ability to progress from a naive to functionally activated state and rapidly mediate autoimmune IDDM development in the complete absence of CD4 T cell helper functions.
2384 10725754 Identification of a CD8 T cell that can independently mediate autoimmune diabetes development in the complete absence of CD4 T cell helper functions.
2385 10725754 Previous work has indicated that an important component for the initiation of autoimmune insulin-dependent diabetes mellitus (IDDM) in the NOD mouse model entails MHC class I-restricted CD8 T cell responses against pancreatic beta cell Ags.
2386 10725754 However, unless previously activated in vitro, such CD8 T cells have previously been thought to require helper functions provided by MHC class II-restricted CD4 T cells to exert their full diabetogenic effects.
2387 10725754 In this study, we show that IDDM development is greatly accelerated in a stock of NOD mice expressing TCR transgenes derived from a MHC class I-restricted CD8 T cell clone (designated AI4) previously found to contribute to the earliest preclinical stages of pancreatic beta cell destruction.
2388 10725754 Importantly, these TCR transgenic NOD mice (designated NOD.AI4alphabeta Tg) continued to develop IDDM at a greatly accelerated rate when residual CD4 helper T cells were eliminated by introduction of the scid mutation or a functionally inactivated CD4 allele.
2389 10725754 In a previously described stock of NOD mice expressing TCR transgenes derived from another MHC class I-restricted beta cell autoreactive T cell clone, IDDM development was retarded by elimination of residual CD4 T cells.
2390 10725754 Hence, there is variability in the helper dependence of CD8 T cells contributing to the development of autoimmune IDDM.
2391 10725754 The AI4 clonotype represents the first CD8 T cell with a demonstrated ability to progress from a naive to functionally activated state and rapidly mediate autoimmune IDDM development in the complete absence of CD4 T cell helper functions.
2392 10725754 Identification of a CD8 T cell that can independently mediate autoimmune diabetes development in the complete absence of CD4 T cell helper functions.
2393 10725754 Previous work has indicated that an important component for the initiation of autoimmune insulin-dependent diabetes mellitus (IDDM) in the NOD mouse model entails MHC class I-restricted CD8 T cell responses against pancreatic beta cell Ags.
2394 10725754 However, unless previously activated in vitro, such CD8 T cells have previously been thought to require helper functions provided by MHC class II-restricted CD4 T cells to exert their full diabetogenic effects.
2395 10725754 In this study, we show that IDDM development is greatly accelerated in a stock of NOD mice expressing TCR transgenes derived from a MHC class I-restricted CD8 T cell clone (designated AI4) previously found to contribute to the earliest preclinical stages of pancreatic beta cell destruction.
2396 10725754 Importantly, these TCR transgenic NOD mice (designated NOD.AI4alphabeta Tg) continued to develop IDDM at a greatly accelerated rate when residual CD4 helper T cells were eliminated by introduction of the scid mutation or a functionally inactivated CD4 allele.
2397 10725754 In a previously described stock of NOD mice expressing TCR transgenes derived from another MHC class I-restricted beta cell autoreactive T cell clone, IDDM development was retarded by elimination of residual CD4 T cells.
2398 10725754 Hence, there is variability in the helper dependence of CD8 T cells contributing to the development of autoimmune IDDM.
2399 10725754 The AI4 clonotype represents the first CD8 T cell with a demonstrated ability to progress from a naive to functionally activated state and rapidly mediate autoimmune IDDM development in the complete absence of CD4 T cell helper functions.
2400 10770268 One of the primary mechanisms of active cellular suppression is via secretion of suppressive cytokines such as TGF-beta, IL-4, and IL-10 following antigen-specific triggering.
2401 10770268 TGF-beta is produced both by CD4+ and CD8+ GALT-derived T cells and is an important mediator of the active suppression component of oral tolerance.
2402 10773364 The popliteal lymph node response to streptozotocin is under type 1, MHC class-I restricted, CD8(+) T-cell control.
2403 10773364 In order to determine whether PLN responses involve CD4(+) or CD8(+) T-cells, the effects of streptozotocin (STZ), a prototypic immunotoxic compound, were analyzed after injection into the hind footpad of C57 BL/6 mice and major histocompatibility complex (MHC) class I or II deficient mice.
2404 10773364 The involvement of type 1 or type 2 cell control on the production of cytokine mRNAs was analyzed in lymph node cells by quantitative RT-PCR, together with the analysis of a wide range of cytokine mRNAs after STZ injection (IL-1alpha, IL-1beta, TNF-alpha, IFN-gamma, IL-2, IL-2 receptor, IL-4, IL-5, IL-6, IL-10 and IL-12).
2405 10773364 We have found that mice depleted in CD8(+) T-cells did not respond to STZ, whereas mice depleted in CD4(+) T-cells exhibited the expected positive PLN responses, with increased weight and cellularity indices.
2406 10773364 STZ induced a low production of interleukin (IL)-2 mRNAs, a mild increase in IL-1alpha and IL-6 mRNAs production, and a dramatic increase in IFN-gamma, IL-1beta, TNF-alpha, IL-12 and IL-2 receptor mRNAs, which correlated with positive PLN responses.
2407 10773364 No effects on IL-4, IL-5 and IL-10 mRNAs synthesis were noted.
2408 10773364 In CD8(+) T-cell deficient mice, there was no production of IFN-gamma or IL-6 mRNAs.
2409 10773364 These results suggest that PLN responses to STZ are under the control of type 1, MHC class-I-restricted, CD8(+) T-cells.
2410 10773364 The popliteal lymph node response to streptozotocin is under type 1, MHC class-I restricted, CD8(+) T-cell control.
2411 10773364 In order to determine whether PLN responses involve CD4(+) or CD8(+) T-cells, the effects of streptozotocin (STZ), a prototypic immunotoxic compound, were analyzed after injection into the hind footpad of C57 BL/6 mice and major histocompatibility complex (MHC) class I or II deficient mice.
2412 10773364 The involvement of type 1 or type 2 cell control on the production of cytokine mRNAs was analyzed in lymph node cells by quantitative RT-PCR, together with the analysis of a wide range of cytokine mRNAs after STZ injection (IL-1alpha, IL-1beta, TNF-alpha, IFN-gamma, IL-2, IL-2 receptor, IL-4, IL-5, IL-6, IL-10 and IL-12).
2413 10773364 We have found that mice depleted in CD8(+) T-cells did not respond to STZ, whereas mice depleted in CD4(+) T-cells exhibited the expected positive PLN responses, with increased weight and cellularity indices.
2414 10773364 STZ induced a low production of interleukin (IL)-2 mRNAs, a mild increase in IL-1alpha and IL-6 mRNAs production, and a dramatic increase in IFN-gamma, IL-1beta, TNF-alpha, IL-12 and IL-2 receptor mRNAs, which correlated with positive PLN responses.
2415 10773364 No effects on IL-4, IL-5 and IL-10 mRNAs synthesis were noted.
2416 10773364 In CD8(+) T-cell deficient mice, there was no production of IFN-gamma or IL-6 mRNAs.
2417 10773364 These results suggest that PLN responses to STZ are under the control of type 1, MHC class-I-restricted, CD8(+) T-cells.
2418 10779402 Flow cytometric analysis then revealed that LPS-stimulation in vitro induced the expression of an IL-2 receptor (CD25) on CD4 T cells; this indicates that the activation of islet-specific T cells is a prerequisite to eliciting diabetes in this situation.
2419 10795741 B7/CD28 costimulation is essential for the homeostasis of the CD4+CD25+ immunoregulatory T cells that control autoimmune diabetes.
2420 10795741 In sharp contrast, spontaneous diabetes is exacerbated in both B7-1/B7-2-deficient and CD28-deficient NOD mice.
2421 10795741 These mice present a profound decrease of the immunoregulatory CD4+CD25+ T cells, which control diabetes in prediabetic NOD mice.
2422 10795741 B7/CD28 costimulation is essential for the homeostasis of the CD4+CD25+ immunoregulatory T cells that control autoimmune diabetes.
2423 10795741 In sharp contrast, spontaneous diabetes is exacerbated in both B7-1/B7-2-deficient and CD28-deficient NOD mice.
2424 10795741 These mice present a profound decrease of the immunoregulatory CD4+CD25+ T cells, which control diabetes in prediabetic NOD mice.
2425 10799914 Natural development of diabetes in nonobese diabetic (NOD) mice requires both CD4 and CD8 T cells.
2426 10806782 The results showed that before treatment the level of serum zinc and red cell C3b receptor rosette(RBCK-C3b RR), T-lymphocyte subgroup CD3, CD4, and CD4/CD8 were decreased(P < 0.01), while CD8, red cell immune complex rosette(RBC-ICR) were increased.
2427 10806782 After treatment with zinc gluconate for 1 month the serum zinc level, RBC-C3b RR, RBC-ICR, CD3 and CD4/CD8 became normal, CD8 also approached to normal.
2428 10806782 The results showed that before treatment the level of serum zinc and red cell C3b receptor rosette(RBCK-C3b RR), T-lymphocyte subgroup CD3, CD4, and CD4/CD8 were decreased(P < 0.01), while CD8, red cell immune complex rosette(RBC-ICR) were increased.
2429 10806782 After treatment with zinc gluconate for 1 month the serum zinc level, RBC-C3b RR, RBC-ICR, CD3 and CD4/CD8 became normal, CD8 also approached to normal.
2430 10861053 Although therapeutic injection of protein and synthetic peptides corresponding to CD4+ T cell epitopes has been shown to prevent or block autoimmune disease in several models, down-regulation of an ongoing CD8+ T cell-mediated autoimmune response using this approach has not yet been reported.
2431 10861053 Thus, in addition to autoreactive CD4+ T cells, CD8+ T cells may constitute targets for Ag-specific therapy in autoimmune diseases.
2432 10861053 Although therapeutic injection of protein and synthetic peptides corresponding to CD4+ T cell epitopes has been shown to prevent or block autoimmune disease in several models, down-regulation of an ongoing CD8+ T cell-mediated autoimmune response using this approach has not yet been reported.
2433 10861053 Thus, in addition to autoreactive CD4+ T cells, CD8+ T cells may constitute targets for Ag-specific therapy in autoimmune diseases.
2434 10873305 The identification of factors that regulate the proliferation and differentiation of double-positive (DP) into CD4(+) and CD8(+) single-positive (SP) thymocytes has proven difficult due to the inability of DP thymocytes to proliferate, expand, and differentiate into SP thymocytes in available cell culture media.
2435 10873305 During a 5-day culture in XLCM in the absence of thymic stromal cells, DP thymocytes from normal mice and MHC double knockout mice (lack SP thymocytes) proliferate, expand, and differentiate into several (alphabetaTCR(+), NK1.1(+)alphabetaTCR(+), and gammadeltaTCR(+)) subsets of CD4(+) and predominantly CD8(+) SP thymocytes.
2436 10873305 The identification of factors that regulate the proliferation and differentiation of double-positive (DP) into CD4(+) and CD8(+) single-positive (SP) thymocytes has proven difficult due to the inability of DP thymocytes to proliferate, expand, and differentiate into SP thymocytes in available cell culture media.
2437 10873305 During a 5-day culture in XLCM in the absence of thymic stromal cells, DP thymocytes from normal mice and MHC double knockout mice (lack SP thymocytes) proliferate, expand, and differentiate into several (alphabetaTCR(+), NK1.1(+)alphabetaTCR(+), and gammadeltaTCR(+)) subsets of CD4(+) and predominantly CD8(+) SP thymocytes.
2438 10925277 We show that the Ab inhibits transfer of insulin-dependent diabetes mellitus by the CD4+ Th1 clone BDC2.5 to nonobese diabetic mice.
2439 10946320 We found that both Th1-like CD45RC+CD4+ and cytotoxic CD8+ T cells were up-regulated, whereas Th2-like CD45RC-CD4+ T cells were down-regulated, and that isolated and activated CD45RC+CD4+ and CD8+ T cells from KRV-infected DR-BB rats induced autoimmune diabetes in young diabetes-prone BioBreeding (DP-BB) rats.
2440 10946320 We conclude that KRV-induced autoimmune diabetes in DR-BB rats is not due to molecular mimicry, but is due to a breakdown of the finely tuned immune balance of Th1-like CD45RC+CD4+ and Th2-like CD45RC-CD4+ T cells, resulting in the selective activation of beta cell-cytotoxic effector T cells.
2441 10946320 We found that both Th1-like CD45RC+CD4+ and cytotoxic CD8+ T cells were up-regulated, whereas Th2-like CD45RC-CD4+ T cells were down-regulated, and that isolated and activated CD45RC+CD4+ and CD8+ T cells from KRV-infected DR-BB rats induced autoimmune diabetes in young diabetes-prone BioBreeding (DP-BB) rats.
2442 10946320 We conclude that KRV-induced autoimmune diabetes in DR-BB rats is not due to molecular mimicry, but is due to a breakdown of the finely tuned immune balance of Th1-like CD45RC+CD4+ and Th2-like CD45RC-CD4+ T cells, resulting in the selective activation of beta cell-cytotoxic effector T cells.
2443 10952038 Both CD4+ and CD8+ cells were detected in the IR(High) T cell population, but IR(High) expression was detected predominantly on CD4+ cells.
2444 10952038 The lack of IL-2 receptor and transferrin receptor expression as seen previously, together with the CD62L(Low)/- CD44(High) phenotype suggests that IR(High) T cells are memory cells.
2445 10975477 Intracellular cytokine staining and flow cytometry were used to investigate whether immunoadsorption (IA) of immunoglobulins alters intracytoplasmic cytokine production in CD4+ and CD8+ T cells from the blood of patients with refractory rheumatoid arthritis (n = 7), membrane proliferative glomerulonephritis (n = 1), and Goodpasture's syndrome (n = 1).
2446 10975477 Four patients (Group 1) showed severely depressed production of TNF-alpha, IL-2, IFN-gamma, and IL-4 by CD4+ and CD8+ T cells and responded to 3 IA sessions with significant increases in CD4+TNF-alpha+, CD4+IL-2+, and CD8+IL-2+ T cells.
2447 10975477 Also, a tendency toward increased percentage levels of CD4+ T cells producing IFN-gamma or IL-4 and of CD8+ T cells producing either TNF-alpha or IFN-gamma was seen, but due to the small number of patients investigated, these differences did not attain statistic significance.
2448 10975477 Group 2 (n = 5) showed unimpaired intracellular cytokine levels and responded to IA with a heterogeneous pattern of changes in TNF-alpha, IL-2, IFN-gamma, and IL-4 production, but these alterations were smaller than those in Group 1.
2449 10975477 Intracellular cytokine staining and flow cytometry were used to investigate whether immunoadsorption (IA) of immunoglobulins alters intracytoplasmic cytokine production in CD4+ and CD8+ T cells from the blood of patients with refractory rheumatoid arthritis (n = 7), membrane proliferative glomerulonephritis (n = 1), and Goodpasture's syndrome (n = 1).
2450 10975477 Four patients (Group 1) showed severely depressed production of TNF-alpha, IL-2, IFN-gamma, and IL-4 by CD4+ and CD8+ T cells and responded to 3 IA sessions with significant increases in CD4+TNF-alpha+, CD4+IL-2+, and CD8+IL-2+ T cells.
2451 10975477 Also, a tendency toward increased percentage levels of CD4+ T cells producing IFN-gamma or IL-4 and of CD8+ T cells producing either TNF-alpha or IFN-gamma was seen, but due to the small number of patients investigated, these differences did not attain statistic significance.
2452 10975477 Group 2 (n = 5) showed unimpaired intracellular cytokine levels and responded to IA with a heterogeneous pattern of changes in TNF-alpha, IL-2, IFN-gamma, and IL-4 production, but these alterations were smaller than those in Group 1.
2453 10975477 Intracellular cytokine staining and flow cytometry were used to investigate whether immunoadsorption (IA) of immunoglobulins alters intracytoplasmic cytokine production in CD4+ and CD8+ T cells from the blood of patients with refractory rheumatoid arthritis (n = 7), membrane proliferative glomerulonephritis (n = 1), and Goodpasture's syndrome (n = 1).
2454 10975477 Four patients (Group 1) showed severely depressed production of TNF-alpha, IL-2, IFN-gamma, and IL-4 by CD4+ and CD8+ T cells and responded to 3 IA sessions with significant increases in CD4+TNF-alpha+, CD4+IL-2+, and CD8+IL-2+ T cells.
2455 10975477 Also, a tendency toward increased percentage levels of CD4+ T cells producing IFN-gamma or IL-4 and of CD8+ T cells producing either TNF-alpha or IFN-gamma was seen, but due to the small number of patients investigated, these differences did not attain statistic significance.
2456 10975477 Group 2 (n = 5) showed unimpaired intracellular cytokine levels and responded to IA with a heterogeneous pattern of changes in TNF-alpha, IL-2, IFN-gamma, and IL-4 production, but these alterations were smaller than those in Group 1.
2457 10975480 We treated the patient by lymphocytapheresis (LCP), which resulted in an improvement of his symptoms, a reduction in the CD4 lymphocyte population, a reduction of the CD4/CD8 ratio, and a reduced thickening of the dura mater that lasted for more than 14 months.
2458 10975823 CD25 is a marker for CD4+ thymocytes that prevent autoimmune diabetes in rats, but peripheral T cells with this function are found in both CD25+ and CD25- subpopulations.
2459 10975823 Previously we have shown that autoimmune diabetes, induced in rats by a protocol of adult thymectomy and split-dose gamma irradiation, can be prevented by the transfer of a subset of CD4+ T cells with a memory phenotype (CD45RC-), as well as by CD4+CD8- thymocytes, from syngeneic donors.
2460 10975823 In thoracic duct lymph, cells that could prevent diabetes were found in both CD25- and CD25+ subsets of CD4+CD45RC- cells.
2461 10975823 CD25 is a marker for CD4+ thymocytes that prevent autoimmune diabetes in rats, but peripheral T cells with this function are found in both CD25+ and CD25- subpopulations.
2462 10975823 Previously we have shown that autoimmune diabetes, induced in rats by a protocol of adult thymectomy and split-dose gamma irradiation, can be prevented by the transfer of a subset of CD4+ T cells with a memory phenotype (CD45RC-), as well as by CD4+CD8- thymocytes, from syngeneic donors.
2463 10975823 In thoracic duct lymph, cells that could prevent diabetes were found in both CD25- and CD25+ subsets of CD4+CD45RC- cells.
2464 10975823 CD25 is a marker for CD4+ thymocytes that prevent autoimmune diabetes in rats, but peripheral T cells with this function are found in both CD25+ and CD25- subpopulations.
2465 10975823 Previously we have shown that autoimmune diabetes, induced in rats by a protocol of adult thymectomy and split-dose gamma irradiation, can be prevented by the transfer of a subset of CD4+ T cells with a memory phenotype (CD45RC-), as well as by CD4+CD8- thymocytes, from syngeneic donors.
2466 10975823 In thoracic duct lymph, cells that could prevent diabetes were found in both CD25- and CD25+ subsets of CD4+CD45RC- cells.
2467 10984555 We thus determined the cortisol response to an intravenous bolus of 1 microg ACTH in 21 controls, 18 HIV-positive (BMI 19.5+/-0.9 kg/m(2), albumin 24+/-1.4 g/l, CD4 count 192+/-47/mm(3)) and 22 HIV-negative (BMI 19.3+/-0.8 kg/m(2), albumin 29+/-1 g/l, CD4 count 652+/-76/mm(3)) patients with active PTB.
2468 11035112 Costimulation delivered by nonautoimmune strain APCs normalized NOD CD4 T cell division and the extent of activation-induced death.
2469 11045760 In vitro treatment of splenocytes with GT revealed relative decreases in CD4+ and increases in CD8+ T-cell subsets, whereas in vivo treatment with GT did not result in detectable alterations in relative CD4+ and CD8+ cell subsets.
2470 11079813 There were also significant decreases in CD4+ and CD8+ thymocytes and the proliferative response of splenocytes.
2471 11079813 Our results suggest that the number and function of T cells in WF may be reduced, which may be related at least in part to elevated TNF-alpha levels, although the role of the other factors such as glucose, insulin, cholesterol, and triglycerides on T-cell immunity should be further investigated.
2472 11106373 Furthermore, I-A(g7)/GAD peptide tetramer can detect most if not all of the antigen-specific CD4(+) T cells from immunized NOD mice.
2473 11106373 Antigen-specific T cells detected by the tetramers can up-regulate their CD4 expression on the cell surface after being restimulated with the GAD peptides in vitro.
2474 11106373 Furthermore, I-A(g7)/GAD peptide tetramer can detect most if not all of the antigen-specific CD4(+) T cells from immunized NOD mice.
2475 11106373 Antigen-specific T cells detected by the tetramers can up-regulate their CD4 expression on the cell surface after being restimulated with the GAD peptides in vitro.
2476 11120794 The insulinoma-associated protein 2 (IA-2) is a phosphatase-like autoantigen inducing T and B cell responses associated with human insulin-dependent diabetes mellitus (IDDM).
2477 11120794 We now report that T cell responses to IA-2 can also be detected in the nonobese diabetic (NOD) mouse, a model of human IDDM.
2478 11120794 Cytokine secretion in response to purified mouse rIA-2, characterized by high IFN-gamma and relatively low IL-10 and IL-6 secretion, was elicited in spleen cells from unprimed NOD mice.
2479 11120794 Conversely, no response to IA-2 was induced in spleen cells from BALB/c, C57BL/6, or Biozzi AB/H mice that express, like NOD, the I-A(g7) class II molecule, but are not susceptible to spontaneous IDDM.
2480 11120794 The IA-2-induced IFN-gamma response in NOD spleen cells could already be detected at 3 wk and peaked at 8 wk of age, whereas the IL-10 secretion was maximal at 4 wk of age and then waned.
2481 11120794 IA-2-dependent IFN-gamma secretion was induced in CD4(+) cells from spleen as well as pancreatic and mesenteric lymph nodes.
2482 11120794 The biological relevance of the response to IA-2 is indicated by the enhanced IDDM following a single injection of the recombinant protein emulsified in IFA into 18-day-old NOD mice.
2483 11120794 In addition, IFN-gamma production in response to IA-2 and IDDM acceleration could be induced by IL-12 administration to 12-day-old NOD mice.
2484 11120794 These results identify IA-2 as an early T cell-inducing autoantigen in the NOD mouse and indicate a role for the IA-2-induced Th1 cell response in IDDM pathogenesis.
2485 11129119 These include increased expression of proteasome processing proteins (LMP2), transporters of antigen peptides (TAP), invariant chain (Ii), HLA-DM, and the co-stimulatory molecule, B7, as well as STAT and NF-kappaB activation.
2486 11129119 A critical factor in these changes is the loss of normal negative regulation of MHC class I, class II, and thyrotropin receptor (TSHR) gene expression, which is necessary to maintain self-tolerance during the normal changes in gene expression involved in hormonally-increased growth and function of the cell.
2487 11129119 Self-tolerance to the TSHR is maintained in normals because there is a population of CD8- cells which normally suppresses a population of CD4+ cells that can interact with the TSHR if thyrocytes become APCs.
2488 11147792 In a second transgenic model in which islet cells express the lymphocytic choriomeningitis virus nucleoprotein, the virus infection triggers autoimmune diabetes within a few weeks involving both CD4 and CD8 T-cells; here too transgenic c-Maf provided significant protection.
2489 11172025 We identified a naturally presented autoantigen from the human islet antigen glutamic acid decarboxylase, 65-kDa isoform (GAD65), by using a combination of chromatography and mass spectrometry of peptides bound by the type I diabetes (insulin-dependent diabetes mellitus, IDDM)-associated HLA-DR4 molecule.
2490 11172025 Peptides encompassing this epitope-stimulated GAD65-specific T cells from diabetic patients and a DR4-positive individual at high risk for developing IDDM.
2491 11172025 This direct identification and manipulation of GAD65 epitope recognition provides an approach toward dissection of the complex CD4(+) T cell response in IDDM.
2492 11179337 CD40 is constitutively expressed on marrow-derived cells such as dendritic cells and B lymphocytes and is induced by gamma interferon (IFN-gamma) on most somatic cells.
2493 11179337 There was no difference between the acquisition of CD69 and CD154 by mesenteric lymph node T cells of C. parvum-infected animals with intact or disrupted CD40-CD154 pathways.
2494 11179337 CD4 T cells entered the intestinal laminae propriae of C. parvum-infected animals whether or not the CD40 genes of these recipients were intact.
2495 11207247 CD4(+) T cells arise spontaneously in young NOD mice to an apparently dominant determinant found within the GAD65 peptide 530--543 (p530); however, T cells to the overlapping determinant 524-538 (p524) dominate the response only after immunization with GAD65(524--543).
2496 11207247 T cell clones and hybridomas from both of these T cell groups were responsive to APC pulsed with GAD65(524--543) or whole rGAD65. p524-reactive cells appeared to be regulatory upon adoptive transfer into young NOD mice and could inhibit insulin-dependent diabetes mellitus development, although they were unable to produce IL-4, IL-10, or TGF beta upon antigenic challenge.
2497 11244033 Autoreactive T cells specific to these autoantigens are present in most normal individuals but are kept under control by a number of peripheral tolerance mechanisms, among which CD4(+) CD25(+) CD62L(+) T cell-mediated regulation probably plays a central role.
2498 11244036 Complexities of CD28/B7: CTLA-4 costimulatory pathways in autoimmunity and transplantation.
2499 11244036 In this review, we summarize the current understanding of these complex costimulatory pathways including the individual roles of the CD28, CTLA-4, B7-1 (CD80), and B7-2 (CD86) molecules.
2500 11244036 This is most apparent in regulation of the CD4(+)CD25(+)CTLA-4(+) immunoregulatory T cells that control multiple autoimmune diseases.
2501 11247635 Accumulating evidence suggests that CD4(+)T helper type 1 (Th1) cells play a major role in the development of insulin-dependent diabetes mellitus (IDDM) in the non-obese diabetic (NOD) mouse model.
2502 11247635 To investigate the role of IL-12 that is locally produced by islet-infiltrating cells in the development of IDDM, we generated transgenic NOD mice in which the IL-12 p40 homodimer, a natural antagonist of IL-12, was produced exclusively in islets without affecting the levels of IL-12 p40 in the systemic circulation.
2503 11247635 These results clearly demonstrate that IL-12 locally produced by islet-infiltrating cells plays a critical role in the development of IDDM.
2504 11274421 We screened synthetic peptide libraries dedicated to bind to HLA-DR3, which predisposes to both diseases, using clonal CD4(+) T cells reactive to GAD65 isolated from a prediabetic stiff-man syndrome patient.
2505 11278441 Structural similarity (molecular mimicry) between viral epitopes and self-peptides can lead to the induction of autoaggressive CD4(+) as well as CD8(+) T cell responses.
2506 11278441 One of these self-peptides, derived from tumor necrosis factor receptor I (FGPSNWHFM, amino acids 302-310), maintained LCMV-specific CD8(+) T cells in an active state as observed both in vitro in cytotoxic assays and in vivo in a model of virus-induced autoimmune diabetes, the rat insulin promoter-LCMV NP transgenic mouse.
2507 11312256 IL-12p40 and IFN-gamma mRNA levels were decreased in pancreata of the vIL-10 Tg mice, although CD4 mRNA level was markedly increased.
2508 11317656 The Src kinases, particularly hck, play an important part in the activation of macrophages and the subsequent production of tumour necrosis factor (TNF)-alpha, interleukin (IL)-1 beta and nitric oxide (NO), leading to the destruction of beta cells which results in the development of diabetes.
2509 11317656 The infection of DR-BB rats with KRV results in the disruption of the finely tuned immune balance of Th1-like CD45RC+CD4+ and Th2-like CD45RC-CD4+ T cells, leading to the selective activation of beta-cell-cytotoxic effector T cells.
2510 11324686 The non-obese diabetic (NOD) mouse is an animal model of human insulin-dependent diabetes mellitus (IDDM).
2511 11324686 Cumulative evidence suggests that Thl CD4+ T cells play a critical role in the autoimmune process leading to beta cell destruction.
2512 11324686 In addition to CD4+ T cells, CD8+ cells and B cells also participate in the pathogenesis.
2513 11324686 There are several candidate antigens recognized by autoreactive T cells such as glutamic acid decarboxylase (GAD), insulin and heat shock protein (HSP) 60.
2514 11324686 The non-obese diabetic (NOD) mouse is an animal model of human insulin-dependent diabetes mellitus (IDDM).
2515 11324686 Cumulative evidence suggests that Thl CD4+ T cells play a critical role in the autoimmune process leading to beta cell destruction.
2516 11324686 In addition to CD4+ T cells, CD8+ cells and B cells also participate in the pathogenesis.
2517 11324686 There are several candidate antigens recognized by autoreactive T cells such as glutamic acid decarboxylase (GAD), insulin and heat shock protein (HSP) 60.
2518 11358432 We used autologous blood monocyte-derived dendritic cells to elicit HLA-A2-restricted CTL to a peptide, MVWESGCTV (aa 797-805), that is contiguous with a dominant CD4 T-cell epitope in the islet antigen tyrosine phosphatase IA-2.
2519 11376339 T cell receptor (TCR)-transgenic CD4+ T cells were primed under controlled conditions in vitro before being adoptively transferred into transgenic recipients expressing membrane ovalbumin under the control of the rat insulin promoter (RIP-mOVA).
2520 11376339 Pathogenicity was associated with T cell production of the macrophage-attracting chemokines CCL3 and CCL4.
2521 11376339 Thus, interactions of lymphocyte function-associated antigen 1 with ICAM-1 during priming induce both qualitative and quantitative alterations in T effector function and induce potentially autodestructive responses.
2522 11418698 We previously demonstrated that administration of plasmid DNAs (pDNAs) encoding IL-4 and a fragment of glutamic acid decarboxylase 65 (GAD65) fused to IgGFc induces GAD65-specific Th2 cells and prevents insulin-dependent diabetes mellitus (IDDM) in nonobese diabetic (NOD) mice.
2523 11418698 Insulin was chosen based on studies demonstrating that administration of insulin or insulin B chain by a variety of strategies prevents IDDM in NOD mice.
2524 11418698 Surprisingly, young NOD mice receiving i.m. injections of pDNA encoding insulin B chain-IgGFc with or without IL-4 exhibited an accelerated progression of insulitis and developed early diabetes.
2525 11418698 Exacerbation of IDDM correlated with an increased frequency of IFN-gamma-secreting CD4(+) and CD8(+) T cells in response to insulin B chain-specific peptides compared with untreated mice.
2526 11418698 In contrast, treatment with pDNAs encoding insulin A chain-IgGFc and IL-4 elicited a low frequency of IL-4-secreting Th cells and had no effect on the progression of IDDM.
2527 11418698 Vaccination with pDNAs encoding GAD65-IgGFc and IL-4, however, prevented IDDM.
2528 11418698 These results demonstrate that insulin- and GAD65-specific T cell reactivity induced by pDNA vaccination has distinct effects on the progression of IDDM.
2529 11441123 Nonobese diabetic (NOD) mice develop spontaneous autoimmune diabetes that involves participation of both CD4+ and CD8+ T cells.
2530 11441916 At rest and at two hours, counts of white blood cells (WBC), mixed lymphocytes, mature T-cells (CD3), T-helper cells (CD4), T-suppressor/ cytotoxic cells (CD8), B-cells (CD19), natural killer cells (CD16/CD56), and interleukin-2 receptor bearing peripheral blood mononuclear cells (CD25) were measured by flow cytometry.
2531 11450149 The aim of the present study was to evaluate the presence of T helper lymphocyte subpopulations: naive (CD4+CD45RA+), memory cells (CD4+CDRO+) and lymphocytes coexpressing both studied phenotypes (CD4+CD45RA+CD45RO+) in subjects at risk of type 1 diabetes (first degree relatives of IDDM patients with autoantibodies) in comparison to age and sex matched controls.
2532 11450149 It could be suggested that CD4+CD45RA+/CD4+CD45RO+ ratio could serve as surrogate marker of diabetes type 1 risk development and presumably for estimation of the efficacy of the preventive procedures in subjects at high risk of IDDM, but further prospective studies are needed.
2533 11450149 The aim of the present study was to evaluate the presence of T helper lymphocyte subpopulations: naive (CD4+CD45RA+), memory cells (CD4+CDRO+) and lymphocytes coexpressing both studied phenotypes (CD4+CD45RA+CD45RO+) in subjects at risk of type 1 diabetes (first degree relatives of IDDM patients with autoantibodies) in comparison to age and sex matched controls.
2534 11450149 It could be suggested that CD4+CD45RA+/CD4+CD45RO+ ratio could serve as surrogate marker of diabetes type 1 risk development and presumably for estimation of the efficacy of the preventive procedures in subjects at high risk of IDDM, but further prospective studies are needed.
2535 11465949 Both CD4 and CD8 T cells have been shown to be independently capable of beta cell destruction.
2536 11465949 It has previously been shown that the absence of TNF-alpha receptor 1 (p55) on the islets protected islets from CD4 T-cell-mediated destruction as long as the T cells did not have access to wild-type islets in vivo.
2537 11465949 In this study, we demonstrate that islet TNF-alpha receptor 1 (p55) influences the expression of LIGHT (TNFSF-14), a TNF family member with both cytolytic and costimulatory properties, on BDC2.5 T cells and the expression of its receptor HVEM (TNFRSF-14) by islets, indicating a role for LIGHT-HVEM interactions in autoimmune diabetes.
2538 11465949 Both CD4 and CD8 T cells have been shown to be independently capable of beta cell destruction.
2539 11465949 It has previously been shown that the absence of TNF-alpha receptor 1 (p55) on the islets protected islets from CD4 T-cell-mediated destruction as long as the T cells did not have access to wild-type islets in vivo.
2540 11465949 In this study, we demonstrate that islet TNF-alpha receptor 1 (p55) influences the expression of LIGHT (TNFSF-14), a TNF family member with both cytolytic and costimulatory properties, on BDC2.5 T cells and the expression of its receptor HVEM (TNFRSF-14) by islets, indicating a role for LIGHT-HVEM interactions in autoimmune diabetes.
2541 11466393 Increased entry into the IFN-gamma effector pathway by CD4+ T cells selected by I-Ag7 on a nonobese diabetic versus C57BL/6 genetic background.
2542 11466393 IFN-gamma-mediated Th1 effects play a major role in the pathogenesis of autoimmune diabetes in nonobese diabetic (NOD) mice.
2543 11466393 We analyzed functional responses of CD4(+) T cells from NOD and B6.G7 MHC congenic mice, which share the H2(g7) MHC region but differ in their non-MHC genetic background.
2544 11466393 Despite comparable proliferative responses, NOD CD4(+) T cells had significantly increased IFN-gamma intracellular/extracellular protein and mRNA responses compared with B6.G7 T cells as measured by intracellular cytokine analysis, time resolved fluorometry, and RNase protection assays.
2545 11466393 The increased IFN-gamma production was not due to an increase in the amount of IFN-gamma produced per cell but to an increase in the number of NOD CD4(+) T cells entering the IFN-gamma-producing pathway.
2546 11466393 B6.G7 lymphoid cells demonstrated an absolute decrease in IFN-gamma mRNA, an increase in IL-4 mRNA production, and a significantly decreased IFN-gamma:IL-4 mRNA transcript ratio compared with NOD cells.
2547 11466393 CD4(+) T cells from C57BL6 mice also showed significantly decreased IFN-gamma production compared with CD4(+) T cells from NOD.H2(b) MHC-congenic mice (which have an H2(b) MHC region introgressed onto an NOD non-MHC background).
2548 11466393 Therefore, the NOD non-MHC background predisposes to a quantitatively increased IFN-gamma response, independent of MHC class II-mediated T cell repertoire selection, even when compared with a prototypical Th1 strain.
2549 11466393 Increased entry into the IFN-gamma effector pathway by CD4+ T cells selected by I-Ag7 on a nonobese diabetic versus C57BL/6 genetic background.
2550 11466393 IFN-gamma-mediated Th1 effects play a major role in the pathogenesis of autoimmune diabetes in nonobese diabetic (NOD) mice.
2551 11466393 We analyzed functional responses of CD4(+) T cells from NOD and B6.G7 MHC congenic mice, which share the H2(g7) MHC region but differ in their non-MHC genetic background.
2552 11466393 Despite comparable proliferative responses, NOD CD4(+) T cells had significantly increased IFN-gamma intracellular/extracellular protein and mRNA responses compared with B6.G7 T cells as measured by intracellular cytokine analysis, time resolved fluorometry, and RNase protection assays.
2553 11466393 The increased IFN-gamma production was not due to an increase in the amount of IFN-gamma produced per cell but to an increase in the number of NOD CD4(+) T cells entering the IFN-gamma-producing pathway.
2554 11466393 B6.G7 lymphoid cells demonstrated an absolute decrease in IFN-gamma mRNA, an increase in IL-4 mRNA production, and a significantly decreased IFN-gamma:IL-4 mRNA transcript ratio compared with NOD cells.
2555 11466393 CD4(+) T cells from C57BL6 mice also showed significantly decreased IFN-gamma production compared with CD4(+) T cells from NOD.H2(b) MHC-congenic mice (which have an H2(b) MHC region introgressed onto an NOD non-MHC background).
2556 11466393 Therefore, the NOD non-MHC background predisposes to a quantitatively increased IFN-gamma response, independent of MHC class II-mediated T cell repertoire selection, even when compared with a prototypical Th1 strain.
2557 11466393 Increased entry into the IFN-gamma effector pathway by CD4+ T cells selected by I-Ag7 on a nonobese diabetic versus C57BL/6 genetic background.
2558 11466393 IFN-gamma-mediated Th1 effects play a major role in the pathogenesis of autoimmune diabetes in nonobese diabetic (NOD) mice.
2559 11466393 We analyzed functional responses of CD4(+) T cells from NOD and B6.G7 MHC congenic mice, which share the H2(g7) MHC region but differ in their non-MHC genetic background.
2560 11466393 Despite comparable proliferative responses, NOD CD4(+) T cells had significantly increased IFN-gamma intracellular/extracellular protein and mRNA responses compared with B6.G7 T cells as measured by intracellular cytokine analysis, time resolved fluorometry, and RNase protection assays.
2561 11466393 The increased IFN-gamma production was not due to an increase in the amount of IFN-gamma produced per cell but to an increase in the number of NOD CD4(+) T cells entering the IFN-gamma-producing pathway.
2562 11466393 B6.G7 lymphoid cells demonstrated an absolute decrease in IFN-gamma mRNA, an increase in IL-4 mRNA production, and a significantly decreased IFN-gamma:IL-4 mRNA transcript ratio compared with NOD cells.
2563 11466393 CD4(+) T cells from C57BL6 mice also showed significantly decreased IFN-gamma production compared with CD4(+) T cells from NOD.H2(b) MHC-congenic mice (which have an H2(b) MHC region introgressed onto an NOD non-MHC background).
2564 11466393 Therefore, the NOD non-MHC background predisposes to a quantitatively increased IFN-gamma response, independent of MHC class II-mediated T cell repertoire selection, even when compared with a prototypical Th1 strain.
2565 11466393 Increased entry into the IFN-gamma effector pathway by CD4+ T cells selected by I-Ag7 on a nonobese diabetic versus C57BL/6 genetic background.
2566 11466393 IFN-gamma-mediated Th1 effects play a major role in the pathogenesis of autoimmune diabetes in nonobese diabetic (NOD) mice.
2567 11466393 We analyzed functional responses of CD4(+) T cells from NOD and B6.G7 MHC congenic mice, which share the H2(g7) MHC region but differ in their non-MHC genetic background.
2568 11466393 Despite comparable proliferative responses, NOD CD4(+) T cells had significantly increased IFN-gamma intracellular/extracellular protein and mRNA responses compared with B6.G7 T cells as measured by intracellular cytokine analysis, time resolved fluorometry, and RNase protection assays.
2569 11466393 The increased IFN-gamma production was not due to an increase in the amount of IFN-gamma produced per cell but to an increase in the number of NOD CD4(+) T cells entering the IFN-gamma-producing pathway.
2570 11466393 B6.G7 lymphoid cells demonstrated an absolute decrease in IFN-gamma mRNA, an increase in IL-4 mRNA production, and a significantly decreased IFN-gamma:IL-4 mRNA transcript ratio compared with NOD cells.
2571 11466393 CD4(+) T cells from C57BL6 mice also showed significantly decreased IFN-gamma production compared with CD4(+) T cells from NOD.H2(b) MHC-congenic mice (which have an H2(b) MHC region introgressed onto an NOD non-MHC background).
2572 11466393 Therefore, the NOD non-MHC background predisposes to a quantitatively increased IFN-gamma response, independent of MHC class II-mediated T cell repertoire selection, even when compared with a prototypical Th1 strain.
2573 11466393 Increased entry into the IFN-gamma effector pathway by CD4+ T cells selected by I-Ag7 on a nonobese diabetic versus C57BL/6 genetic background.
2574 11466393 IFN-gamma-mediated Th1 effects play a major role in the pathogenesis of autoimmune diabetes in nonobese diabetic (NOD) mice.
2575 11466393 We analyzed functional responses of CD4(+) T cells from NOD and B6.G7 MHC congenic mice, which share the H2(g7) MHC region but differ in their non-MHC genetic background.
2576 11466393 Despite comparable proliferative responses, NOD CD4(+) T cells had significantly increased IFN-gamma intracellular/extracellular protein and mRNA responses compared with B6.G7 T cells as measured by intracellular cytokine analysis, time resolved fluorometry, and RNase protection assays.
2577 11466393 The increased IFN-gamma production was not due to an increase in the amount of IFN-gamma produced per cell but to an increase in the number of NOD CD4(+) T cells entering the IFN-gamma-producing pathway.
2578 11466393 B6.G7 lymphoid cells demonstrated an absolute decrease in IFN-gamma mRNA, an increase in IL-4 mRNA production, and a significantly decreased IFN-gamma:IL-4 mRNA transcript ratio compared with NOD cells.
2579 11466393 CD4(+) T cells from C57BL6 mice also showed significantly decreased IFN-gamma production compared with CD4(+) T cells from NOD.H2(b) MHC-congenic mice (which have an H2(b) MHC region introgressed onto an NOD non-MHC background).
2580 11466393 Therefore, the NOD non-MHC background predisposes to a quantitatively increased IFN-gamma response, independent of MHC class II-mediated T cell repertoire selection, even when compared with a prototypical Th1 strain.
2581 11466400 CD4(+) T cell responses to glutamic acid decarboxylase (GAD65) spontaneously arise in nonobese diabetic (NOD) mice before the onset of insulin-dependent diabetes mellitus (IDDM) and may be critical to the pathogenic process.
2582 11466400 However, since both CD4(+) and CD8(+) T cells are involved in autoimmune diabetes, we sought to determine whether GAD65-specific CD8(+) T cells were also present in prediabetic NOD mice and contribute to IDDM.
2583 11466400 Naive NOD spleen cells stimulated with GAD65 peptides 206-214 (p206) and 546-554 (p546) produced IFN-gamma and showed Ag-specific CTL responses against targets pulsed with homologous peptide.
2584 11466400 Spontaneous CTL responses to p206 and p546 were mediated by CD8(+) T cells that are capable of lysing GAD65-expressing target cells, and p546-specific T cells transferred insulitis to NOD.scid mice.
2585 11466400 This report reveals a potential therapeutic role for MHC class I-restricted peptides in treating autoimmune disease and revisits the notion that the CD4- and CD8-inducing determinants on some molecules may benefit from a proximal relationship.
2586 11466400 CD4(+) T cell responses to glutamic acid decarboxylase (GAD65) spontaneously arise in nonobese diabetic (NOD) mice before the onset of insulin-dependent diabetes mellitus (IDDM) and may be critical to the pathogenic process.
2587 11466400 However, since both CD4(+) and CD8(+) T cells are involved in autoimmune diabetes, we sought to determine whether GAD65-specific CD8(+) T cells were also present in prediabetic NOD mice and contribute to IDDM.
2588 11466400 Naive NOD spleen cells stimulated with GAD65 peptides 206-214 (p206) and 546-554 (p546) produced IFN-gamma and showed Ag-specific CTL responses against targets pulsed with homologous peptide.
2589 11466400 Spontaneous CTL responses to p206 and p546 were mediated by CD8(+) T cells that are capable of lysing GAD65-expressing target cells, and p546-specific T cells transferred insulitis to NOD.scid mice.
2590 11466400 This report reveals a potential therapeutic role for MHC class I-restricted peptides in treating autoimmune disease and revisits the notion that the CD4- and CD8-inducing determinants on some molecules may benefit from a proximal relationship.
2591 11466400 CD4(+) T cell responses to glutamic acid decarboxylase (GAD65) spontaneously arise in nonobese diabetic (NOD) mice before the onset of insulin-dependent diabetes mellitus (IDDM) and may be critical to the pathogenic process.
2592 11466400 However, since both CD4(+) and CD8(+) T cells are involved in autoimmune diabetes, we sought to determine whether GAD65-specific CD8(+) T cells were also present in prediabetic NOD mice and contribute to IDDM.
2593 11466400 Naive NOD spleen cells stimulated with GAD65 peptides 206-214 (p206) and 546-554 (p546) produced IFN-gamma and showed Ag-specific CTL responses against targets pulsed with homologous peptide.
2594 11466400 Spontaneous CTL responses to p206 and p546 were mediated by CD8(+) T cells that are capable of lysing GAD65-expressing target cells, and p546-specific T cells transferred insulitis to NOD.scid mice.
2595 11466400 This report reveals a potential therapeutic role for MHC class I-restricted peptides in treating autoimmune disease and revisits the notion that the CD4- and CD8-inducing determinants on some molecules may benefit from a proximal relationship.
2596 11467420 Intra-islet CD4 and CD8 cells and macrophages were also enumerated at day 11.
2597 11467420 In the latter group, CD4 and CD8 cells and macrophages were also higher at day 11 than all other 4 groups (CD4: p < 0.05; CD8: p< 0.05; macrophages: p<0.0001).
2598 11467420 Intra-islet CD4 and CD8 cells and macrophages were also enumerated at day 11.
2599 11467420 In the latter group, CD4 and CD8 cells and macrophages were also higher at day 11 than all other 4 groups (CD4: p < 0.05; CD8: p< 0.05; macrophages: p<0.0001).
2600 11472422 The increase of murine interleukin-1 beta when mouse plastic-adherent spleen cells were cultured with PIC (P < 0.04) was indicative of macrophage activation.
2601 11472422 Another mechanism was apparent, since co-incubation of PIC with purified mouse T cells or CD4+ T cells, re-mixed with antigen-presenting cells, led to a decrease (P < 0.01) of insulin release.
2602 11535635 The peripheral nerve tissue was infiltrated with dendritic cells, CD4(+), and CD8(+) T cells.
2603 11535635 This model demonstrates that NOD mice have "cryptic" autoimmune defects that can polarize toward the nervous tissue after the selective disruption of CD28/B7-2 costimulatory pathway.
2604 11544341 IL-15 is a powerful T cell growth factor (TCGF) with particular importance for the maintenance of CD8(+) T cells.
2605 11544341 Because costimulation blockade does not result in universal tolerance, we hypothesized that "escape" from costimulation blockade might represent a CD8(+) and IL-15/IL-15R(+)-dependent process.
2606 11544341 For this analysis, we have used an IL-15 mutant/Fcgamma2a protein, a potentially cytolytic protein that is also a high-affinity receptor site specific antagonist for the IL-15Ralpha receptor protein, as a therapeutic agent.
2607 11544341 The IL-15-related fusion protein was used as monotherapy or in combination with CTLA4/Fc in murine islet allograft models.
2608 11544341 As monotherapies, CTLA4/Fc and an IL-15 mutant/Fcgamma2a were comparably effective in a semiallogeneic model system, and combined treatment with IL-15 mutant/Fcgamma2a plus CTLA4/Fc produced universal permanent engraftment.
2609 11544341 The analysis revealed that the IL-15 mutant/Fc treatment confers partial protection from both CD4(+) and CD8(+) T cell graft infiltration.
2610 11544341 In rejections occurring despite CTLA4/Fc treatment, concomitant treatment with the IL-15 mutant/Fcgamma2a protein blocked a CD8(+) T cell-dominated rejection processes.
2611 11544341 Hence, we have demonstrated that targeting the IL-15/IL-15R pathway represents a new and potent strategy to prevent costimulation blockade-resistant CD8(+) T cell-driven rejection.
2612 11544345 To examine these issues, we analyzed TCR Vbeta chain-specific up-regulation of the early T cell activation marker, CD69, on CD4 T cells after incubation with Coxsackievirus B4 (CVB4) Ags.
2613 11544345 Up-regulation of CD69 by different TCR families was significantly more frequent in new onset type 1 DM patients (p = 0.04), 100% of whom (n = 8) showed activation of CD4 T cells bearing Vbeta8, compared with 50% of control subjects (n = 8; p = 0.04).
2614 11544345 To examine these issues, we analyzed TCR Vbeta chain-specific up-regulation of the early T cell activation marker, CD69, on CD4 T cells after incubation with Coxsackievirus B4 (CVB4) Ags.
2615 11544345 Up-regulation of CD69 by different TCR families was significantly more frequent in new onset type 1 DM patients (p = 0.04), 100% of whom (n = 8) showed activation of CD4 T cells bearing Vbeta8, compared with 50% of control subjects (n = 8; p = 0.04).
2616 11590186 Here, we completely blocked adoptive transfer of diabetes and reduced spontaneous disease incidence from 71% to 17% by simultaneously administering a combination of antibodies directed against alpha4, beta2, and beta7 integrins and their ligands VCAM-1, MAdCAM-1, and ICAM-1 for 52 and 28 days, respectively.
2617 11590186 CD4 and CD8 T cells and macrophages were excluded from islets and remained entrapped in a peri-islet location as inactive exiles, no longer expressing normal levels of interferon-gamma, interleukin-4, and iNOS.
2618 11591120 In comparison with IRF-1(+/+), the percentage of CD4(+) and Mac-1(+) splenic cells significantly increased, whereas CD3(+), CD8(+) and B220(+) cells decreased in IRF-1(-/-).
2619 11591120 Furthermore, spleen cell proliferation in response to Con A or murine GAD65 peptide, a major autoantigen of the pancreatic beta-cell, significantly increased, and the IFN-gamma/IL-10 ratio in the culture supernatant significantly decreased in IRF-1(-/-), suggesting Th2 deviation in cytokine balance.
2620 11591759 In this regard, in vitro anti-CD3-mediated stimulation demonstrates impaired activation of lymph node CD4 T cells in muMT(-/-) NOD mice as compared with that of wild-type counterparts, a deficiency that is correlated with an exaggerated CD4 T cell:APC ratio in lymph nodes of muMT(-/-) NOD mice.
2621 11600216 The disease is characterized by loss of tolerance to auto-antigens such as GAD, insulin, and the protein tyrosine phosphatase-like molecule, IA-2.
2622 11600216 We identified T cell epitopes on the intracytoplasmic region of IA-2 by immunizing DQ8/NOD, DQ8/B10, and NOD mice with overlapping 18 mer peptides in CFA.
2623 11600216 We demonstrated MHC class II and CD4 restriction of proliferative responses using appropriate blocking antibodies.
2624 11722631 These cells, which express CD4, CD25, and CD62L, develop in the thymus and survive in a CD28-dependent manner in the periphery to maintain the homeostatic equilibrium of immunity and tolerance.
2625 11723052 Importantly, numbers and effector functions of autoaggressive CD4 and CD8 lymphocytes were not decreased in the protected mice, and CTLs were still able to kill syngeneic islet cells in vitro with equal efficacy compared with CTLs from the original RIP-LCMV strain.
2626 11723051 When thymic precursor cells of beta2-microglobulin gene-deficient AKR mice, which have a deficient NKT population, were introduced into NOD.scid recipients, both CD4(+) and CD8(+) T-cell populations developed and the recipient mice developed insulitis and diabetes.
2627 11729828 In vitro secretion of interleukin 2 and expression of IL-2 receptor in peripheral blood lymphocytes in high risk of insulin-dependent diabetes mellitus subjects.
2628 11729828 Interleukin 2 (IL-2)--a Th1 lymphocyte-derived cytokine is at present considered to play an important role in the etiopathogenesis of insulin-dependent diabetes mellitus.
2629 11729828 In the previous studies increased, decreased and unchanged IL-2 levels in patients with recent onset of insulin-dependent diabetes mellitus (IDDM) were found.
2630 11729828 The aim of our study was to estimate in vitro secretion of IL-2 and CD25 antigen expression by the peripheral blood T lymphocytes in subjects at the preclinical stage of IDDM (prediabetes), but still without metabolic disturbances.
2631 11729828 In 27 first degree relatives of IDDM patients with antibodies against different pancreatic islet cell antigens (ICA, GADA, IAA, IA-2) CD25 antigen expression on peripheral blood lymphocytes T was measured by flow cytometry and IL-2 concentration in supernatants of 48 and 72 h cultures of peripheral whole blood with 10 microg/ml PHA was estimated by ELISA.
2632 11729828 In the studied high risk IDDM subjects the decreased CD25 expression in peripheral CD4+ lymphocytes T and a negative correlation between the percentage of CD25+ cells and islet cell antibodies (ICA) titres was observed.
2633 11729828 A significant increase of IL-2 secretion at 72 h of PHA stimulation was shown in first degree relatives of IDDM patients with a combination of 3 or more antipancreatic-B cell antibodies.
2634 11729828 The present study suggests the involvement of IL-2 in the pathogenesis of IDDM.
2635 11739486 A ligand for the chemokine receptor CCR7 can influence the homeostatic proliferation of CD4 T cells and progression of autoimmunity.
2636 11739486 Although the mechanisms are unknown, we find that the chemokine CCL21 (also known as TCA4, SLC, 6Ckine), a ligand for the chemokine receptor CCR7, can regulate homeostasis of CD4 (but not CD8) T cells.
2637 11739486 In the absence of CCR7 ligands, transferred CD4 T cells failed to expand in lymphopenic hosts, whereas in the presence of CCL21 overexpression, homeostatic CD4 T cell proliferation occurred even in nonlymphopenic recipients.
2638 11739486 These results suggest that CD4 T cells use local concentrations of CCR7 ligands as an index of T cell steady state numbers and that homeostatic expansion of the T cell population may be a contributing factor in the development of autoimmune disease.
2639 11739486 A ligand for the chemokine receptor CCR7 can influence the homeostatic proliferation of CD4 T cells and progression of autoimmunity.
2640 11739486 Although the mechanisms are unknown, we find that the chemokine CCL21 (also known as TCA4, SLC, 6Ckine), a ligand for the chemokine receptor CCR7, can regulate homeostasis of CD4 (but not CD8) T cells.
2641 11739486 In the absence of CCR7 ligands, transferred CD4 T cells failed to expand in lymphopenic hosts, whereas in the presence of CCL21 overexpression, homeostatic CD4 T cell proliferation occurred even in nonlymphopenic recipients.
2642 11739486 These results suggest that CD4 T cells use local concentrations of CCR7 ligands as an index of T cell steady state numbers and that homeostatic expansion of the T cell population may be a contributing factor in the development of autoimmune disease.
2643 11739486 A ligand for the chemokine receptor CCR7 can influence the homeostatic proliferation of CD4 T cells and progression of autoimmunity.
2644 11739486 Although the mechanisms are unknown, we find that the chemokine CCL21 (also known as TCA4, SLC, 6Ckine), a ligand for the chemokine receptor CCR7, can regulate homeostasis of CD4 (but not CD8) T cells.
2645 11739486 In the absence of CCR7 ligands, transferred CD4 T cells failed to expand in lymphopenic hosts, whereas in the presence of CCL21 overexpression, homeostatic CD4 T cell proliferation occurred even in nonlymphopenic recipients.
2646 11739486 These results suggest that CD4 T cells use local concentrations of CCR7 ligands as an index of T cell steady state numbers and that homeostatic expansion of the T cell population may be a contributing factor in the development of autoimmune disease.
2647 11739486 A ligand for the chemokine receptor CCR7 can influence the homeostatic proliferation of CD4 T cells and progression of autoimmunity.
2648 11739486 Although the mechanisms are unknown, we find that the chemokine CCL21 (also known as TCA4, SLC, 6Ckine), a ligand for the chemokine receptor CCR7, can regulate homeostasis of CD4 (but not CD8) T cells.
2649 11739486 In the absence of CCR7 ligands, transferred CD4 T cells failed to expand in lymphopenic hosts, whereas in the presence of CCL21 overexpression, homeostatic CD4 T cell proliferation occurred even in nonlymphopenic recipients.
2650 11739486 These results suggest that CD4 T cells use local concentrations of CCR7 ligands as an index of T cell steady state numbers and that homeostatic expansion of the T cell population may be a contributing factor in the development of autoimmune disease.
2651 11781061 T cells clones recognizing insulin, both CD4 and CD8, can transfer disease to young mice or immunodeficient animals.
2652 11781358 We also report low numbers of resting CD4(+) CD25(+) T cells in IMD patients, a subset of T cells shown to have important immunoregulatory functions in abrogating autoimmunities in 3-day thymectomized experimental mice.
2653 11781358 Whereas a biased Th1 to Th2 cytokine profile has been suggested to underlie the pathogenesis of IMD in both species, we found defective production of IFN-gamma in our patients after in vitro stimulation of their PBMCs by phorbol-myristate acetate and ionomycin and both IFN-gamma and IL-4 deficiencies in V(alpha)24(+) NK T-enriched cells.
2654 11785671 Although there was no evidence of typical insulitis in early disease development (day 10), in both rats and mice, macrophages, CD4+ and CD8+ cells were present in the islets of Langerhans as diffuse mononuclear infiltrates with the expression of IFN-gamma, and inducible NO synthase (iNOS).
2655 11793013 Data obtained on non-obese diabetic (NOD) mice suggest that macrophages and CD4+ T-cells are the main cellular effectors, whereas CD8+ T-cells are more important initiators of the immune process leading to beta-cell death.
2656 11793013 Perforin could be the effector molecule utilized by CD8+ T-cell initiation, whereas CD4+ mediated beta-cell destruction is mostly dependent on Fas/FasL and the cytokines IFNgamma and TNF-alpha.
2657 11793013 The macrophage cytokine IL-1beta in combination with IFN-gamma and TNF-alpha, plays an important role for beta-cell dysfunction and death.
2658 11793013 Signal transduction by these cytokines involves: (i) binding to specific receptors, (ii) signal transduction by cytosolic kinases (especially the so-called mitogen- and stress-activated protein kinases) and/or phosphatases, (iii) mobilization of diverse transcription factors - with nuclear factor kappaB (NF-kappaB), AP-1 and STAT-1 probably playing key roles for beta-cell apoptosis; (iv) up-regulation or down-regulation of gene transcription.
2659 11793013 Data obtained on non-obese diabetic (NOD) mice suggest that macrophages and CD4+ T-cells are the main cellular effectors, whereas CD8+ T-cells are more important initiators of the immune process leading to beta-cell death.
2660 11793013 Perforin could be the effector molecule utilized by CD8+ T-cell initiation, whereas CD4+ mediated beta-cell destruction is mostly dependent on Fas/FasL and the cytokines IFNgamma and TNF-alpha.
2661 11793013 The macrophage cytokine IL-1beta in combination with IFN-gamma and TNF-alpha, plays an important role for beta-cell dysfunction and death.
2662 11793013 Signal transduction by these cytokines involves: (i) binding to specific receptors, (ii) signal transduction by cytosolic kinases (especially the so-called mitogen- and stress-activated protein kinases) and/or phosphatases, (iii) mobilization of diverse transcription factors - with nuclear factor kappaB (NF-kappaB), AP-1 and STAT-1 probably playing key roles for beta-cell apoptosis; (iv) up-regulation or down-regulation of gene transcription.
2663 11797119 Here we report a case of large granular lymphocyte disease unusually expressing CD4+CD8+ clonal T cells and atypical cell morphology in bone marrow.
2664 11812739 Antidiabetogenic MHC class II molecules may thus afford diabetes resistance by presenting, on dendritic cells and macrophages, tolerogenic peptides to a subset of highly diabetogenic and MHC-promiscuous CD4(+) T-cells that play a critical role in the initiation of diabetes.
2665 11826762 It shares many of these functions with other cytokines such as IL-15, which complicates the interpretation of the IL-2-deficient phenotype.
2666 11826762 The autoimmune phenotype associated with IL-2 deficiency results from the dysregulated activity of thymus-derived TCR alpha beta CD4+ and/or CD8+ T cells.
2667 11826762 The IL-2R signal responsible for maintaining homeostasis is not dependent on either the Shc or Stat5 pathways, therefore AICD, which is Stat5-dependent in vitro, cannot be the critical mechanism.
2668 11826762 Finally, expression of the IL-2R in the thymus and not the periphery appears sufficient to suppress the autoimmune phenotype, suggesting that IL-2 signaling may be required for some aspect of thymocyte selection and/or differentiation that has so far gone undetected.
2669 11862219 The antidiabetogenic effects of DEF rely on the induction of anergy in splenic autoreactive CD4+ T cells via alteration of early T cell receptor signaling and stimulation of interleukin 10-secreting T regulatory type 1 cells in the pancreas.
2670 11869680 Pancreatic lymph node-derived CD4(+)CD25(+) Treg cells: highly potent regulators of diabetes that require TRANCE-RANK signals.
2671 11869680 Here we show in a CD8(+) T cell-mediated model of type 1 diabetes that CD4(+)CD25(+) Treg cells prevent beta cell destruction following localized inflammation in the islets of Langerhans.
2672 11869680 PLN-derived Treg cells are extremely potent; only 2 x 10(3) cells are needed to prevent diabetes development, and their capacity to regulate is dependent on TNF-related activation induced cytokine-receptor activator of NFkappaB signals.
2673 11869680 Indeed, blockade of this pathway results in decreased frequency of CD4(+)CD25(+) Treg cells in the PLN, resulting in intra-islet differentiation of CD8(+) T cells into CTLs and rapid progression to diabetes.
2674 11869680 Pancreatic lymph node-derived CD4(+)CD25(+) Treg cells: highly potent regulators of diabetes that require TRANCE-RANK signals.
2675 11869680 Here we show in a CD8(+) T cell-mediated model of type 1 diabetes that CD4(+)CD25(+) Treg cells prevent beta cell destruction following localized inflammation in the islets of Langerhans.
2676 11869680 PLN-derived Treg cells are extremely potent; only 2 x 10(3) cells are needed to prevent diabetes development, and their capacity to regulate is dependent on TNF-related activation induced cytokine-receptor activator of NFkappaB signals.
2677 11869680 Indeed, blockade of this pathway results in decreased frequency of CD4(+)CD25(+) Treg cells in the PLN, resulting in intra-islet differentiation of CD8(+) T cells into CTLs and rapid progression to diabetes.
2678 11869680 Pancreatic lymph node-derived CD4(+)CD25(+) Treg cells: highly potent regulators of diabetes that require TRANCE-RANK signals.
2679 11869680 Here we show in a CD8(+) T cell-mediated model of type 1 diabetes that CD4(+)CD25(+) Treg cells prevent beta cell destruction following localized inflammation in the islets of Langerhans.
2680 11869680 PLN-derived Treg cells are extremely potent; only 2 x 10(3) cells are needed to prevent diabetes development, and their capacity to regulate is dependent on TNF-related activation induced cytokine-receptor activator of NFkappaB signals.
2681 11869680 Indeed, blockade of this pathway results in decreased frequency of CD4(+)CD25(+) Treg cells in the PLN, resulting in intra-islet differentiation of CD8(+) T cells into CTLs and rapid progression to diabetes.
2682 11877486 We report here that CD4(+) and CD4(-)CD8(-) (double negative [DN]) NKT cell subsets represent functionally distinct lineages with marked differences in their profile of cytokine secretion and pattern of expression of chemokine receptors, integrins, and NK receptors.
2683 11877486 CD4(+) NKT cells were the exclusive producers of interleukin (IL)-4 and IL-13 upon primary stimulation, whereas DN NKT cells had a strict Th1 profile and prominently expressed several NK lineage receptors.
2684 11877486 We report here that CD4(+) and CD4(-)CD8(-) (double negative [DN]) NKT cell subsets represent functionally distinct lineages with marked differences in their profile of cytokine secretion and pattern of expression of chemokine receptors, integrins, and NK receptors.
2685 11877486 CD4(+) NKT cells were the exclusive producers of interleukin (IL)-4 and IL-13 upon primary stimulation, whereas DN NKT cells had a strict Th1 profile and prominently expressed several NK lineage receptors.
2686 11878772 A new type of antigen presenting molecule (dimeric MHC class-II/peptide, DEF) endowed with antigen-specific immunomodulatory effects such as induction of Th2 polarization and T-cell anergy is also described as a potential antidiabetogenic agent.
2687 11878772 According to our preliminary results, the MHC II/peptide-based approach may provide rational grounds for further development of antigen-specific immunotherapeutic agents such as human-like MHC lI/peptide chimeras endowed with efficient down-regulatory effects in CD4 T-cell-mediated autoimmune diseases such as Type 1 diabetes, multiple sclerosis, primary biliary cirrhosis, and rheumatoid arthritis.
2688 11884430 Adoptive transfer experiments with CD62L(-/-) CD4(+) T cells prepared from BDC2.5 TCR transgenic mice revealed no apparent defects in migration to pancreatic lymph nodes, proliferation in response to beta cell Ag, or induction of diabetes in NOD.scid recipients.
2689 11888156 The protocol requires the presence of CD4+ T cells, interferon-gamma, and CTLA4, and involves the deletion of CD8+ alloreactive T cells.
2690 11890612 Modulation of CD4 T cell function by soluble MHC II-peptide chimeras.
2691 11890612 Co-ligation of TCR and CD4 co-receptor on T cells by MHC II-peptide complexes (signal 1) leads to various T cell functions depending on the nature of TCR and CD4 co-ligation, and whether costimulatory receptors (signal 2) such as CD28, CTLA-4, CD40L are involved in this interaction.
2692 11890612 Modulation of CD4 T cell function by soluble MHC II-peptide chimeras.
2693 11890612 Co-ligation of TCR and CD4 co-receptor on T cells by MHC II-peptide complexes (signal 1) leads to various T cell functions depending on the nature of TCR and CD4 co-ligation, and whether costimulatory receptors (signal 2) such as CD28, CTLA-4, CD40L are involved in this interaction.
2694 11891296 To date, no marker for autoimmune T cells has been described, although it was previously demonstrated that autoimmune mice have a large population of CD4(+) cells that express CD40.
2695 11891296 We show that autoimmune diabetes-prone nonobese diabetic mice have high levels of CD40(+)CD4(+) T cells in the thymus, spleen, and importantly, in the pancreas.
2696 11891296 Finally, as demonstrated by adoptive transfers, CD4(+)CD40(+) cells infiltrate the pancreatic islets causing beta-cell degranulation and ultimately diabetes.
2697 11891296 To date, no marker for autoimmune T cells has been described, although it was previously demonstrated that autoimmune mice have a large population of CD4(+) cells that express CD40.
2698 11891296 We show that autoimmune diabetes-prone nonobese diabetic mice have high levels of CD40(+)CD4(+) T cells in the thymus, spleen, and importantly, in the pancreas.
2699 11891296 Finally, as demonstrated by adoptive transfers, CD4(+)CD40(+) cells infiltrate the pancreatic islets causing beta-cell degranulation and ultimately diabetes.
2700 11891296 To date, no marker for autoimmune T cells has been described, although it was previously demonstrated that autoimmune mice have a large population of CD4(+) cells that express CD40.
2701 11891296 We show that autoimmune diabetes-prone nonobese diabetic mice have high levels of CD40(+)CD4(+) T cells in the thymus, spleen, and importantly, in the pancreas.
2702 11891296 Finally, as demonstrated by adoptive transfers, CD4(+)CD40(+) cells infiltrate the pancreatic islets causing beta-cell degranulation and ultimately diabetes.
2703 11899083 Despite of some controversy, most of the studies in humans and animal models suggest that CD4 (Th1) T cells are directly involved in the autoimmune attack by secretion of pro-inflammatory cytokines and recruitment of cytotoxic CD8 T cells.
2704 11905849 Complexity of human immune response profiles for CD4+ T cell epitopes from the diabetes autoantigen GAD65.
2705 11905849 We have investigated recognition of the GAD65 protein, one of the well-characterized autoantigens in type I diabetes, among individuals carrying the HLA-DR4 haplotypes characteristic of susceptibility to IDDM.
2706 11905849 The majority of T cell responses were restricted by DRB1 molecules; however, DRB4 restricted responses were also observed.
2707 11978632 Type 1 diabetes is a chronic progressive autoimmune disease characterized by mononuclear cell infiltration, dominated by interleukin-12 (IL-12)-dependent Th1 cells, of the pancreatic islets, with subsequent destruction of insulin-producing beta-cells.
2708 11978632 Thus, a short treatment of adult NOD mice with an analog of 1,25-dihydroxyvitamin D(3) inhibits IL-12 production, blocks pancreatic infiltration of Th1 cells, enhances CD4(+)CD25(+) regulatory cells, and arrests the progression of type 1 diabetes, suggesting its possible application in the treatment of human autoimmune diabetes.
2709 11978633 T-cell activation defined in flow cytometry by CD4(high) and/or CD25 markers were observed in all type 1 diabetic patients and some at-risk subjects, but not in normal control subjects.
2710 11978635 Fas/Fas ligand interactions play an essential role in the initiation of murine autoimmune diabetes.
2711 11978635 Apoptosis via Fas/Fas ligand (FasL) interactions has been proposed to be a major T-cell-mediated effector mechanism in autoimmune diabetes.
2712 11978635 To elucidate the role of Fas/FasL interactions in NOD diabetes, the effects of neutralizing anti-FasL antibody on autoimmune responses were evaluated.
2713 11978635 Islet-specific CD8(+) and CD4(+) T-cells expressed FasL upon activation and mediated FasL-dependent cytotoxicity against Fas-expressing target cells in vitro, although their cytotoxicity against islet cells was not blocked by anti-FasL antibody.
2714 11978635 On the other hand, blockade of Fas/FasL interactions significantly inhibited CD4(+) T-cell-dependent diabetes in adoptive transfer models.
2715 11978635 These results suggest a substantial contribution of Fas/FasL interactions to CD4(+), but not CD8(+), T-cell-mediated destruction of pancreatic beta-cells.
2716 11978635 These results suggest that Fas/FasL interactions contribute to CD4(+) T-cell-mediated beta-cell destruction and play an essential role in the initiation of autoimmune NOD diabetes.
2717 11978635 Fas/Fas ligand interactions play an essential role in the initiation of murine autoimmune diabetes.
2718 11978635 Apoptosis via Fas/Fas ligand (FasL) interactions has been proposed to be a major T-cell-mediated effector mechanism in autoimmune diabetes.
2719 11978635 To elucidate the role of Fas/FasL interactions in NOD diabetes, the effects of neutralizing anti-FasL antibody on autoimmune responses were evaluated.
2720 11978635 Islet-specific CD8(+) and CD4(+) T-cells expressed FasL upon activation and mediated FasL-dependent cytotoxicity against Fas-expressing target cells in vitro, although their cytotoxicity against islet cells was not blocked by anti-FasL antibody.
2721 11978635 On the other hand, blockade of Fas/FasL interactions significantly inhibited CD4(+) T-cell-dependent diabetes in adoptive transfer models.
2722 11978635 These results suggest a substantial contribution of Fas/FasL interactions to CD4(+), but not CD8(+), T-cell-mediated destruction of pancreatic beta-cells.
2723 11978635 These results suggest that Fas/FasL interactions contribute to CD4(+) T-cell-mediated beta-cell destruction and play an essential role in the initiation of autoimmune NOD diabetes.
2724 11978635 Fas/Fas ligand interactions play an essential role in the initiation of murine autoimmune diabetes.
2725 11978635 Apoptosis via Fas/Fas ligand (FasL) interactions has been proposed to be a major T-cell-mediated effector mechanism in autoimmune diabetes.
2726 11978635 To elucidate the role of Fas/FasL interactions in NOD diabetes, the effects of neutralizing anti-FasL antibody on autoimmune responses were evaluated.
2727 11978635 Islet-specific CD8(+) and CD4(+) T-cells expressed FasL upon activation and mediated FasL-dependent cytotoxicity against Fas-expressing target cells in vitro, although their cytotoxicity against islet cells was not blocked by anti-FasL antibody.
2728 11978635 On the other hand, blockade of Fas/FasL interactions significantly inhibited CD4(+) T-cell-dependent diabetes in adoptive transfer models.
2729 11978635 These results suggest a substantial contribution of Fas/FasL interactions to CD4(+), but not CD8(+), T-cell-mediated destruction of pancreatic beta-cells.
2730 11978635 These results suggest that Fas/FasL interactions contribute to CD4(+) T-cell-mediated beta-cell destruction and play an essential role in the initiation of autoimmune NOD diabetes.
2731 11978635 Fas/Fas ligand interactions play an essential role in the initiation of murine autoimmune diabetes.
2732 11978635 Apoptosis via Fas/Fas ligand (FasL) interactions has been proposed to be a major T-cell-mediated effector mechanism in autoimmune diabetes.
2733 11978635 To elucidate the role of Fas/FasL interactions in NOD diabetes, the effects of neutralizing anti-FasL antibody on autoimmune responses were evaluated.
2734 11978635 Islet-specific CD8(+) and CD4(+) T-cells expressed FasL upon activation and mediated FasL-dependent cytotoxicity against Fas-expressing target cells in vitro, although their cytotoxicity against islet cells was not blocked by anti-FasL antibody.
2735 11978635 On the other hand, blockade of Fas/FasL interactions significantly inhibited CD4(+) T-cell-dependent diabetes in adoptive transfer models.
2736 11978635 These results suggest a substantial contribution of Fas/FasL interactions to CD4(+), but not CD8(+), T-cell-mediated destruction of pancreatic beta-cells.
2737 11978635 These results suggest that Fas/FasL interactions contribute to CD4(+) T-cell-mediated beta-cell destruction and play an essential role in the initiation of autoimmune NOD diabetes.
2738 11992736 In the direct PLNA, diclofenac also increased the percent of T cells in the PLN with activated phenotypes (CD44(high)CD62L(low) and CD44(high)CD62L(high)).
2739 11992736 Finally, an increase in the intracellular level of IL-4, but not INFgamma, was detected in CD4(+) PLN cells following the injection of diclofenac mixed with TNP-OVA.
2740 11994496 We examined the expression of IFN-gamma, a characteristic Th1 cytokine, and IL-4, a characteristic Th2 cytokine, in islet infiltrates of female and male NOD mice at various ages.
2741 11994496 IFN-gamma was significantly higher in young females, whereas IL-4 was higher in young males.
2742 11994496 CD4(+) T cells isolated from lymph nodes of female mice and activated with anti-CD3 and anti-CD28 Abs produced more IFN-gamma, but less IL-4, as compared with males.
2743 11994496 Treatment of CD4(+) T cells with estrogen significantly increased, whereas testosterone treatment decreased the IL-12-induced production of IFN-gamma.
2744 11994496 We then examined whether the change in IL-12-induced IFN-gamma production by treatment with sex hormones was due to the regulation of STAT4 activation.
2745 11994496 We found that estrogen treatment increased the phosphorylation of STAT4 in IL-12-stimulated T cells.
2746 11994496 We conclude that the increased susceptibility of female NOD mice to the development of autoimmune diabetes could be due to the enhancement of the Th1 immune response through the increase of IL-12-induced STAT4 activation by estrogen.
2747 11994496 We examined the expression of IFN-gamma, a characteristic Th1 cytokine, and IL-4, a characteristic Th2 cytokine, in islet infiltrates of female and male NOD mice at various ages.
2748 11994496 IFN-gamma was significantly higher in young females, whereas IL-4 was higher in young males.
2749 11994496 CD4(+) T cells isolated from lymph nodes of female mice and activated with anti-CD3 and anti-CD28 Abs produced more IFN-gamma, but less IL-4, as compared with males.
2750 11994496 Treatment of CD4(+) T cells with estrogen significantly increased, whereas testosterone treatment decreased the IL-12-induced production of IFN-gamma.
2751 11994496 We then examined whether the change in IL-12-induced IFN-gamma production by treatment with sex hormones was due to the regulation of STAT4 activation.
2752 11994496 We found that estrogen treatment increased the phosphorylation of STAT4 in IL-12-stimulated T cells.
2753 11994496 We conclude that the increased susceptibility of female NOD mice to the development of autoimmune diabetes could be due to the enhancement of the Th1 immune response through the increase of IL-12-induced STAT4 activation by estrogen.
2754 12028557 Inefficient deletion of CD4 and CD8 single-positive, heat stable antigen (HSA)hi medullary thymocytes was also observed in hyporesponsive donors.
2755 12034374 Similarly, the dramatic decreases in the size of the CD4(+)CD8(+) population of cells in the thymus and in the number of thymocytes in the S and G2/M phases of the cell cycle observed in wild-type mice administered PPs were much less extensive in PPARalpha-null mice.
2756 12039407 Flow cytometric analyses found that autoreactive T-cell lines from patients induced by beta-cell antigens consisted of four major subsets (CD4(+)CD56(-), CD4(+)CD56(+), CD8(+)CD56(-), and CD8(+)CD56(+)) and that CD56(+) NKT cells might be derived from CD56(-) T cells.
2757 12039407 Moreover, the proportion of CD56(+) NKT cells in the T-cell lines was influenced by time course of repeated antigen stimulation. beta-cell antigen-specific CD56(+) NKT (CD4(+) or CD8(+)) cells were more aggressive (HLA-restricted and -unrestricted) effector cells lysing target cells such as K562, Jurkat, P815 plus anti-CD3 antibody, and autologous B cells sensitized by beta-cell peptides, when compared with their CD56(-) counterparts. beta-cell antigen- specific CD4(+)CD56(+) NKT cells showed non-HLA-restricted cytotoxicity to human beta cells, insulinoma cell line CM, and to islet cell lines TRM-6 and HP62 expressing CD56 but not to four CD56(-) pancreatic cell lines of non- islet origin.
2758 12039407 The CD4(+)CD56(+) NKT cells showed stronger cytotoxicity to CM, TRM-6 and HP62 cells than did CD4(+)CD56(-) T cells.
2759 12039407 Moreover, isotope-unlabelled CD56(+) cells and anti-CD56 antibodies were able to inhibit cytotoxicity of CD4(+)CD56(+) NKT to CD56(+) target cells.
2760 12039407 Flow cytometric analyses found that autoreactive T-cell lines from patients induced by beta-cell antigens consisted of four major subsets (CD4(+)CD56(-), CD4(+)CD56(+), CD8(+)CD56(-), and CD8(+)CD56(+)) and that CD56(+) NKT cells might be derived from CD56(-) T cells.
2761 12039407 Moreover, the proportion of CD56(+) NKT cells in the T-cell lines was influenced by time course of repeated antigen stimulation. beta-cell antigen-specific CD56(+) NKT (CD4(+) or CD8(+)) cells were more aggressive (HLA-restricted and -unrestricted) effector cells lysing target cells such as K562, Jurkat, P815 plus anti-CD3 antibody, and autologous B cells sensitized by beta-cell peptides, when compared with their CD56(-) counterparts. beta-cell antigen- specific CD4(+)CD56(+) NKT cells showed non-HLA-restricted cytotoxicity to human beta cells, insulinoma cell line CM, and to islet cell lines TRM-6 and HP62 expressing CD56 but not to four CD56(-) pancreatic cell lines of non- islet origin.
2762 12039407 The CD4(+)CD56(+) NKT cells showed stronger cytotoxicity to CM, TRM-6 and HP62 cells than did CD4(+)CD56(-) T cells.
2763 12039407 Moreover, isotope-unlabelled CD56(+) cells and anti-CD56 antibodies were able to inhibit cytotoxicity of CD4(+)CD56(+) NKT to CD56(+) target cells.
2764 12039407 Flow cytometric analyses found that autoreactive T-cell lines from patients induced by beta-cell antigens consisted of four major subsets (CD4(+)CD56(-), CD4(+)CD56(+), CD8(+)CD56(-), and CD8(+)CD56(+)) and that CD56(+) NKT cells might be derived from CD56(-) T cells.
2765 12039407 Moreover, the proportion of CD56(+) NKT cells in the T-cell lines was influenced by time course of repeated antigen stimulation. beta-cell antigen-specific CD56(+) NKT (CD4(+) or CD8(+)) cells were more aggressive (HLA-restricted and -unrestricted) effector cells lysing target cells such as K562, Jurkat, P815 plus anti-CD3 antibody, and autologous B cells sensitized by beta-cell peptides, when compared with their CD56(-) counterparts. beta-cell antigen- specific CD4(+)CD56(+) NKT cells showed non-HLA-restricted cytotoxicity to human beta cells, insulinoma cell line CM, and to islet cell lines TRM-6 and HP62 expressing CD56 but not to four CD56(-) pancreatic cell lines of non- islet origin.
2766 12039407 The CD4(+)CD56(+) NKT cells showed stronger cytotoxicity to CM, TRM-6 and HP62 cells than did CD4(+)CD56(-) T cells.
2767 12039407 Moreover, isotope-unlabelled CD56(+) cells and anti-CD56 antibodies were able to inhibit cytotoxicity of CD4(+)CD56(+) NKT to CD56(+) target cells.
2768 12039407 Flow cytometric analyses found that autoreactive T-cell lines from patients induced by beta-cell antigens consisted of four major subsets (CD4(+)CD56(-), CD4(+)CD56(+), CD8(+)CD56(-), and CD8(+)CD56(+)) and that CD56(+) NKT cells might be derived from CD56(-) T cells.
2769 12039407 Moreover, the proportion of CD56(+) NKT cells in the T-cell lines was influenced by time course of repeated antigen stimulation. beta-cell antigen-specific CD56(+) NKT (CD4(+) or CD8(+)) cells were more aggressive (HLA-restricted and -unrestricted) effector cells lysing target cells such as K562, Jurkat, P815 plus anti-CD3 antibody, and autologous B cells sensitized by beta-cell peptides, when compared with their CD56(-) counterparts. beta-cell antigen- specific CD4(+)CD56(+) NKT cells showed non-HLA-restricted cytotoxicity to human beta cells, insulinoma cell line CM, and to islet cell lines TRM-6 and HP62 expressing CD56 but not to four CD56(-) pancreatic cell lines of non- islet origin.
2770 12039407 The CD4(+)CD56(+) NKT cells showed stronger cytotoxicity to CM, TRM-6 and HP62 cells than did CD4(+)CD56(-) T cells.
2771 12039407 Moreover, isotope-unlabelled CD56(+) cells and anti-CD56 antibodies were able to inhibit cytotoxicity of CD4(+)CD56(+) NKT to CD56(+) target cells.
2772 12049723 CD154-dependent priming of diabetogenic CD4(+) T cells dissociated from activation of antigen-presenting cells.
2773 12049723 We followed the fate of K(d)- or I-A(g7)-restricted beta cell-autoreactive T cells in monoclonal TCR-transgenic NOD mice expressing or lacking CD154. 8.3-NOD.RAG-2(-/-)/CD154(-/-) mice, which bear autoreactive CD8(+) T cells, developed diabetes with the same incidence and tempo as 8.3-NOD.RAG-2(-/-)/CD154(+) mice.
2774 12049723 Recruitment of CD154(-/-) 8.3-CD8(+) CTL was accelerated by CD154(+)CD4(+) T cells, by expression of a B7.1 transgene in beta cells or by treatment of the mice with CpG-DNA or an agonistic anti-CD40 antibody.
2775 12049723 In contrast, the autoreactive CD4(+) T cells maturing in 4.1-NOD.RAG-2(-/-) mice lost their diabetogenic potential if they lacked CD154, even in the presence of CD154(+)CD4(+) T cells, B7.1 molecules on beta cells, CpG-DNA treatment, or systemic CD40 ligation.
2776 12049723 These results demonstrate the existence of a novel, CD154-dependent pathway of CD4(+) T cell activation that is independent of CD40-mediated activation of APCs.
2777 12049723 CD154-dependent priming of diabetogenic CD4(+) T cells dissociated from activation of antigen-presenting cells.
2778 12049723 We followed the fate of K(d)- or I-A(g7)-restricted beta cell-autoreactive T cells in monoclonal TCR-transgenic NOD mice expressing or lacking CD154. 8.3-NOD.RAG-2(-/-)/CD154(-/-) mice, which bear autoreactive CD8(+) T cells, developed diabetes with the same incidence and tempo as 8.3-NOD.RAG-2(-/-)/CD154(+) mice.
2779 12049723 Recruitment of CD154(-/-) 8.3-CD8(+) CTL was accelerated by CD154(+)CD4(+) T cells, by expression of a B7.1 transgene in beta cells or by treatment of the mice with CpG-DNA or an agonistic anti-CD40 antibody.
2780 12049723 In contrast, the autoreactive CD4(+) T cells maturing in 4.1-NOD.RAG-2(-/-) mice lost their diabetogenic potential if they lacked CD154, even in the presence of CD154(+)CD4(+) T cells, B7.1 molecules on beta cells, CpG-DNA treatment, or systemic CD40 ligation.
2781 12049723 These results demonstrate the existence of a novel, CD154-dependent pathway of CD4(+) T cell activation that is independent of CD40-mediated activation of APCs.
2782 12049723 CD154-dependent priming of diabetogenic CD4(+) T cells dissociated from activation of antigen-presenting cells.
2783 12049723 We followed the fate of K(d)- or I-A(g7)-restricted beta cell-autoreactive T cells in monoclonal TCR-transgenic NOD mice expressing or lacking CD154. 8.3-NOD.RAG-2(-/-)/CD154(-/-) mice, which bear autoreactive CD8(+) T cells, developed diabetes with the same incidence and tempo as 8.3-NOD.RAG-2(-/-)/CD154(+) mice.
2784 12049723 Recruitment of CD154(-/-) 8.3-CD8(+) CTL was accelerated by CD154(+)CD4(+) T cells, by expression of a B7.1 transgene in beta cells or by treatment of the mice with CpG-DNA or an agonistic anti-CD40 antibody.
2785 12049723 In contrast, the autoreactive CD4(+) T cells maturing in 4.1-NOD.RAG-2(-/-) mice lost their diabetogenic potential if they lacked CD154, even in the presence of CD154(+)CD4(+) T cells, B7.1 molecules on beta cells, CpG-DNA treatment, or systemic CD40 ligation.
2786 12049723 These results demonstrate the existence of a novel, CD154-dependent pathway of CD4(+) T cell activation that is independent of CD40-mediated activation of APCs.
2787 12049723 CD154-dependent priming of diabetogenic CD4(+) T cells dissociated from activation of antigen-presenting cells.
2788 12049723 We followed the fate of K(d)- or I-A(g7)-restricted beta cell-autoreactive T cells in monoclonal TCR-transgenic NOD mice expressing or lacking CD154. 8.3-NOD.RAG-2(-/-)/CD154(-/-) mice, which bear autoreactive CD8(+) T cells, developed diabetes with the same incidence and tempo as 8.3-NOD.RAG-2(-/-)/CD154(+) mice.
2789 12049723 Recruitment of CD154(-/-) 8.3-CD8(+) CTL was accelerated by CD154(+)CD4(+) T cells, by expression of a B7.1 transgene in beta cells or by treatment of the mice with CpG-DNA or an agonistic anti-CD40 antibody.
2790 12049723 In contrast, the autoreactive CD4(+) T cells maturing in 4.1-NOD.RAG-2(-/-) mice lost their diabetogenic potential if they lacked CD154, even in the presence of CD154(+)CD4(+) T cells, B7.1 molecules on beta cells, CpG-DNA treatment, or systemic CD40 ligation.
2791 12049723 These results demonstrate the existence of a novel, CD154-dependent pathway of CD4(+) T cell activation that is independent of CD40-mediated activation of APCs.
2792 12073618 To define the immunopathologic mechanisms underlying pulmonary tuberculosis in patients with DM, the production of IFN-gamma by CD4+ T cells or PBMC were followed up longitudinally during antituberculous chemotherapy.
2793 12073618 At the time of diagnosis, IFN-gamma production by CD4+ T cells in either tuberculosis patients without DM (TB) or with DM was significantly lower than that in the healthy control.
2794 12073618 CD4+ T cells in tuberculosis patients with DM under poor control (DM(p)TB) produced significantly less IFN-gamma than did patients with DM under good control (DM(g)TB).
2795 12073618 To define the immunopathologic mechanisms underlying pulmonary tuberculosis in patients with DM, the production of IFN-gamma by CD4+ T cells or PBMC were followed up longitudinally during antituberculous chemotherapy.
2796 12073618 At the time of diagnosis, IFN-gamma production by CD4+ T cells in either tuberculosis patients without DM (TB) or with DM was significantly lower than that in the healthy control.
2797 12073618 CD4+ T cells in tuberculosis patients with DM under poor control (DM(p)TB) produced significantly less IFN-gamma than did patients with DM under good control (DM(g)TB).
2798 12073618 To define the immunopathologic mechanisms underlying pulmonary tuberculosis in patients with DM, the production of IFN-gamma by CD4+ T cells or PBMC were followed up longitudinally during antituberculous chemotherapy.
2799 12073618 At the time of diagnosis, IFN-gamma production by CD4+ T cells in either tuberculosis patients without DM (TB) or with DM was significantly lower than that in the healthy control.
2800 12073618 CD4+ T cells in tuberculosis patients with DM under poor control (DM(p)TB) produced significantly less IFN-gamma than did patients with DM under good control (DM(g)TB).
2801 12079263 Hypergammaglobulinaemia, increased serum levels of total IgG or IgG4, positive autoantibodies such as antinuclear antibody, anti-lactoferrin antibody, anti-CA-II antibody, rheumatoid factor and anti-smooth muscle antibody, were often observed in patients with AIP.
2802 12079263 Major subgroups of lymphocytes infiltrating areas around pancreatic ducts were CD4(+) T-cells producing IFN-gamma.
2803 12110118 The disease is T-cell mediated, involving both CD4 and CD8 cells.
2804 12110133 Multiple roles for tumor necrosis factor-alpha and lymphotoxin alpha/beta in immunity and autoimmunity.
2805 12110133 In several experimental systems (Jurkat T cells, murine T-cell hybridomas), TNF-alpha appears to cause a downregulation of signaling through the TCR, revealed by changes in calcium flux, activation of p21, p23 and ZAP70, and a decrease in nuclear activation of NF-kappaB.
2806 12110133 The paradoxical effects of neonatal TNF-alpha administration in NOD mice in increasing incidence of and hastening onset of type 1 diabetes, while neonatal anti-TNF administration completely prevents all signs of islet cell autoimmunity, are due partly to the low levels of CD4+CD25+ T cells in NOD mice.
2807 12110133 In contrast, neonatal administration of anti-TNF-alpha results in a dramatic increase in the levels of CD4+CD25+ regulatory T cells, to levels beyond those seen in wild-type untreated NOD mice.
2808 12110133 TNF-alpha and LTalpha/beta thus have pleomorphic regulatory effects on the development and expression of autoimmunity.
2809 12110133 Multiple roles for tumor necrosis factor-alpha and lymphotoxin alpha/beta in immunity and autoimmunity.
2810 12110133 In several experimental systems (Jurkat T cells, murine T-cell hybridomas), TNF-alpha appears to cause a downregulation of signaling through the TCR, revealed by changes in calcium flux, activation of p21, p23 and ZAP70, and a decrease in nuclear activation of NF-kappaB.
2811 12110133 The paradoxical effects of neonatal TNF-alpha administration in NOD mice in increasing incidence of and hastening onset of type 1 diabetes, while neonatal anti-TNF administration completely prevents all signs of islet cell autoimmunity, are due partly to the low levels of CD4+CD25+ T cells in NOD mice.
2812 12110133 In contrast, neonatal administration of anti-TNF-alpha results in a dramatic increase in the levels of CD4+CD25+ regulatory T cells, to levels beyond those seen in wild-type untreated NOD mice.
2813 12110133 TNF-alpha and LTalpha/beta thus have pleomorphic regulatory effects on the development and expression of autoimmunity.
2814 12115623 We previously demonstrated that immunotherapy with dendritic cells (DC) prevented diabetes development in prediabetic NOD mice and that this effect was optimal when using a stimulatory DC population generated from bone marrow cells cultured with granulocyte-macrophage colony-stimulating factor (GM-CSF) and IL-4.
2815 12115623 In this study, we have investigated the mechanism by which GM-CSF- and IL-4-cultured DC prevent diabetes in prediabetic NOD mice.
2816 12115623 Furthermore, sorted CD45RB(lo) CD25+ CD4+ T cells from the spleen of DC-treated mice produced high amounts of Th2 cytokines following anti-TCR stimulation, suggesting that these cells are responsible for the apparent Th2 shift.
2817 12118894 Furthermore, combined blockade of the CD28/B7 and CD154/CD40 costimulatory pathways induces tolerance in multiple CD4+ T-cell dependent allograft models.
2818 12118894 Analysis of the costimulatory capacity of different antigen presenting cell (APC) populations demonstrated that APCs resident within the donor skin, Langerhans cells, are potent stimulators not requiring CD28- or CD154-dependent costimulation for direct major histocompatibility complex (MHC) antigen presentation.
2819 12118894 These results complement previous work examining the role of costimulation on CD8+ T cells, supporting a model in which the effectiveness of costimulatory blockade in the setting of transplantation may be selective for the indirect pathway of MHC alloantigen presentation.
2820 12145162 CC chemokine receptor 5 (CCR5) is expressed preferentially by CD4(+) T helper 1 (Th1) cells.
2821 12145162 In CCR5(-/-) mice, intragraft mRNA expression of interleukin-4 and -5 was increased, whereas that of interferon-gamma was decreased, corresponding to a Th2 pattern of T-cell activation in the target tissues compared with a Th1 pattern observed in controls.
2822 12147632 In addition, anti-CD45RB treatment led to reduced expression of LFA-1 and CD62 ligand (CD62L) on CD4 T cells, independent of antigenic challenge.
2823 12147632 LFA-1 may enhance co-stimulation, and both LFA-1 and CD62L are involved in T cell trafficking.
2824 12163561 The presence of activated, antigen-specific CD4(+) T cells converts this tolerogenic encounter into an immunogenic one by promoting extensive proliferation of CD8(+) T cells and their development into effectors.
2825 12163561 Surprisingly, activation of APCs with an agonistic antibody specific for CD40 could not substitute for CD4(+) help in this task.
2826 12163561 The presence of activated, antigen-specific CD4(+) T cells converts this tolerogenic encounter into an immunogenic one by promoting extensive proliferation of CD8(+) T cells and their development into effectors.
2827 12163561 Surprisingly, activation of APCs with an agonistic antibody specific for CD40 could not substitute for CD4(+) help in this task.
2828 12173299 In parallel, the proliferative response of CD4+ T-cells to the primary protein antigens keyhole limpet hemocyanin (KLH) and sperm whale myoglobin (SWM) was measured in vitro using monocyte-derived dendritic cells (MDDC) as antigen-presenting cells.
2829 12173299 Antigen-induced interferon-gamma and interleukin-13 release was reduced in type-1 diabetes patients, localizing the impairment to the level of antigen-presenting cell-T-cell interaction.
2830 12173299 FACS analysis of CD80 (B7.1), CD86 (B7.2), and HLA-DR expression on MDDC could not demonstrate significant differences in the expression of these molecules between type-1 and type-2 diabetes patients and healthy controls.
2831 12182467 Benign insulitis with macrophages, B cells, CD4 > CD8 T cells and low levels of IL-2R, IL-2, IFN-gamma and IL-4 was seen in islets from the native pancreas and in long surviving pancreas isografts in mice that remained in remission.
2832 12186840 CD4(+) T cells from glutamic acid decarboxylase (GAD)65-specific T cell receptor transgenic mice are not diabetogenic and can delay diabetes transfer.
2833 12186840 These mice have GAD65-specific CD4(+) T cells, as shown by staining with an I-A(g7)(p286) tetramer reagent.
2834 12186840 Lymphocytes from these TCR transgenic mice proliferate and make interferon gamma, interleukin (IL)-2, tumor necrosis factor (TNF)-alpha, and IL-10 when stimulated in vitro with GAD65 peptide 286-300, yet these TCR transgenic animals do not spontaneously develop diabetes, and insulitis is virtually undetectable.
2835 12186840 Furthermore, in vitro activated CD4 T cells from GAD 286 TCR transgenic mice express higher levels of CTL-associated antigen (CTLA)-4 than nontransgenic littermates.
2836 12186840 CD4(+) T cells, or p286-tetramer(+)CD4(+) Tcells, from GAD65 286-300-specific TCR transgenic mice delay diabetes induced in NOD.scid mice by diabetic NOD spleen cells.
2837 12186840 CD4(+) T cells from glutamic acid decarboxylase (GAD)65-specific T cell receptor transgenic mice are not diabetogenic and can delay diabetes transfer.
2838 12186840 These mice have GAD65-specific CD4(+) T cells, as shown by staining with an I-A(g7)(p286) tetramer reagent.
2839 12186840 Lymphocytes from these TCR transgenic mice proliferate and make interferon gamma, interleukin (IL)-2, tumor necrosis factor (TNF)-alpha, and IL-10 when stimulated in vitro with GAD65 peptide 286-300, yet these TCR transgenic animals do not spontaneously develop diabetes, and insulitis is virtually undetectable.
2840 12186840 Furthermore, in vitro activated CD4 T cells from GAD 286 TCR transgenic mice express higher levels of CTL-associated antigen (CTLA)-4 than nontransgenic littermates.
2841 12186840 CD4(+) T cells, or p286-tetramer(+)CD4(+) Tcells, from GAD65 286-300-specific TCR transgenic mice delay diabetes induced in NOD.scid mice by diabetic NOD spleen cells.
2842 12186840 CD4(+) T cells from glutamic acid decarboxylase (GAD)65-specific T cell receptor transgenic mice are not diabetogenic and can delay diabetes transfer.
2843 12186840 These mice have GAD65-specific CD4(+) T cells, as shown by staining with an I-A(g7)(p286) tetramer reagent.
2844 12186840 Lymphocytes from these TCR transgenic mice proliferate and make interferon gamma, interleukin (IL)-2, tumor necrosis factor (TNF)-alpha, and IL-10 when stimulated in vitro with GAD65 peptide 286-300, yet these TCR transgenic animals do not spontaneously develop diabetes, and insulitis is virtually undetectable.
2845 12186840 Furthermore, in vitro activated CD4 T cells from GAD 286 TCR transgenic mice express higher levels of CTL-associated antigen (CTLA)-4 than nontransgenic littermates.
2846 12186840 CD4(+) T cells, or p286-tetramer(+)CD4(+) Tcells, from GAD65 286-300-specific TCR transgenic mice delay diabetes induced in NOD.scid mice by diabetic NOD spleen cells.
2847 12186840 CD4(+) T cells from glutamic acid decarboxylase (GAD)65-specific T cell receptor transgenic mice are not diabetogenic and can delay diabetes transfer.
2848 12186840 These mice have GAD65-specific CD4(+) T cells, as shown by staining with an I-A(g7)(p286) tetramer reagent.
2849 12186840 Lymphocytes from these TCR transgenic mice proliferate and make interferon gamma, interleukin (IL)-2, tumor necrosis factor (TNF)-alpha, and IL-10 when stimulated in vitro with GAD65 peptide 286-300, yet these TCR transgenic animals do not spontaneously develop diabetes, and insulitis is virtually undetectable.
2850 12186840 Furthermore, in vitro activated CD4 T cells from GAD 286 TCR transgenic mice express higher levels of CTL-associated antigen (CTLA)-4 than nontransgenic littermates.
2851 12186840 CD4(+) T cells, or p286-tetramer(+)CD4(+) Tcells, from GAD65 286-300-specific TCR transgenic mice delay diabetes induced in NOD.scid mice by diabetic NOD spleen cells.
2852 12193712 Whether or not peptide II(33-47) is the only proinsulin determinant recognized by CD4 T cells remains unclear.
2853 12193715 The subpopulation of CD4+CD25+ splenocytes that delays adoptive transfer of diabetes expresses L-selectin and high levels of CCR7.
2854 12193715 Recently, CD4(+)CD25(+) T cells have been implicated in the control of diabetes, suggesting that the inflamed islets of Langerhans in prediabetic NOD mice are under peripheral immune surveillance.
2855 12193715 Here we show that CD4(+)CD25(+) splenocytes inhibit diabetes in cotransfer with islet-infiltrating cells.
2856 12193715 Furthermore, CD62L expression is necessary for this disease-delaying effect of CD4(+)CD25(+) cells in vivo, but not for their suppressor function in vitro.
2857 12193715 We demonstrate that the CD4(+)CD25(+)CD62L(+) splenocytes express CCR7 at high levels and migrate toward secondary lymphoid tissue chemokine and ELC (macrophage-inflammatory protein-3beta), lymphoid chemokines, whereas CD4(+)CD25(+)CD62L(-) splenocytes preferentially express CCR2, CCR4, and CXCR3 and migrate toward the corresponding inflammatory chemokines.
2858 12193715 These data demonstrate that CD4(+)CD25(+)CD62L(+), but not CD4(+)CD25(+)CD62L(-), splenocytes delay diabetes transfer, and that CD4(+)CD25(+) suppressor T cells are comprised of at least two subpopulations that behave differently in cotransfer in vivo and express distinct chemokine receptor and chemotactic response profiles despite demonstrating equivalent suppressor functions in vitro.
2859 12193715 The subpopulation of CD4+CD25+ splenocytes that delays adoptive transfer of diabetes expresses L-selectin and high levels of CCR7.
2860 12193715 Recently, CD4(+)CD25(+) T cells have been implicated in the control of diabetes, suggesting that the inflamed islets of Langerhans in prediabetic NOD mice are under peripheral immune surveillance.
2861 12193715 Here we show that CD4(+)CD25(+) splenocytes inhibit diabetes in cotransfer with islet-infiltrating cells.
2862 12193715 Furthermore, CD62L expression is necessary for this disease-delaying effect of CD4(+)CD25(+) cells in vivo, but not for their suppressor function in vitro.
2863 12193715 We demonstrate that the CD4(+)CD25(+)CD62L(+) splenocytes express CCR7 at high levels and migrate toward secondary lymphoid tissue chemokine and ELC (macrophage-inflammatory protein-3beta), lymphoid chemokines, whereas CD4(+)CD25(+)CD62L(-) splenocytes preferentially express CCR2, CCR4, and CXCR3 and migrate toward the corresponding inflammatory chemokines.
2864 12193715 These data demonstrate that CD4(+)CD25(+)CD62L(+), but not CD4(+)CD25(+)CD62L(-), splenocytes delay diabetes transfer, and that CD4(+)CD25(+) suppressor T cells are comprised of at least two subpopulations that behave differently in cotransfer in vivo and express distinct chemokine receptor and chemotactic response profiles despite demonstrating equivalent suppressor functions in vitro.
2865 12193715 The subpopulation of CD4+CD25+ splenocytes that delays adoptive transfer of diabetes expresses L-selectin and high levels of CCR7.
2866 12193715 Recently, CD4(+)CD25(+) T cells have been implicated in the control of diabetes, suggesting that the inflamed islets of Langerhans in prediabetic NOD mice are under peripheral immune surveillance.
2867 12193715 Here we show that CD4(+)CD25(+) splenocytes inhibit diabetes in cotransfer with islet-infiltrating cells.
2868 12193715 Furthermore, CD62L expression is necessary for this disease-delaying effect of CD4(+)CD25(+) cells in vivo, but not for their suppressor function in vitro.
2869 12193715 We demonstrate that the CD4(+)CD25(+)CD62L(+) splenocytes express CCR7 at high levels and migrate toward secondary lymphoid tissue chemokine and ELC (macrophage-inflammatory protein-3beta), lymphoid chemokines, whereas CD4(+)CD25(+)CD62L(-) splenocytes preferentially express CCR2, CCR4, and CXCR3 and migrate toward the corresponding inflammatory chemokines.
2870 12193715 These data demonstrate that CD4(+)CD25(+)CD62L(+), but not CD4(+)CD25(+)CD62L(-), splenocytes delay diabetes transfer, and that CD4(+)CD25(+) suppressor T cells are comprised of at least two subpopulations that behave differently in cotransfer in vivo and express distinct chemokine receptor and chemotactic response profiles despite demonstrating equivalent suppressor functions in vitro.
2871 12193715 The subpopulation of CD4+CD25+ splenocytes that delays adoptive transfer of diabetes expresses L-selectin and high levels of CCR7.
2872 12193715 Recently, CD4(+)CD25(+) T cells have been implicated in the control of diabetes, suggesting that the inflamed islets of Langerhans in prediabetic NOD mice are under peripheral immune surveillance.
2873 12193715 Here we show that CD4(+)CD25(+) splenocytes inhibit diabetes in cotransfer with islet-infiltrating cells.
2874 12193715 Furthermore, CD62L expression is necessary for this disease-delaying effect of CD4(+)CD25(+) cells in vivo, but not for their suppressor function in vitro.
2875 12193715 We demonstrate that the CD4(+)CD25(+)CD62L(+) splenocytes express CCR7 at high levels and migrate toward secondary lymphoid tissue chemokine and ELC (macrophage-inflammatory protein-3beta), lymphoid chemokines, whereas CD4(+)CD25(+)CD62L(-) splenocytes preferentially express CCR2, CCR4, and CXCR3 and migrate toward the corresponding inflammatory chemokines.
2876 12193715 These data demonstrate that CD4(+)CD25(+)CD62L(+), but not CD4(+)CD25(+)CD62L(-), splenocytes delay diabetes transfer, and that CD4(+)CD25(+) suppressor T cells are comprised of at least two subpopulations that behave differently in cotransfer in vivo and express distinct chemokine receptor and chemotactic response profiles despite demonstrating equivalent suppressor functions in vitro.
2877 12193715 The subpopulation of CD4+CD25+ splenocytes that delays adoptive transfer of diabetes expresses L-selectin and high levels of CCR7.
2878 12193715 Recently, CD4(+)CD25(+) T cells have been implicated in the control of diabetes, suggesting that the inflamed islets of Langerhans in prediabetic NOD mice are under peripheral immune surveillance.
2879 12193715 Here we show that CD4(+)CD25(+) splenocytes inhibit diabetes in cotransfer with islet-infiltrating cells.
2880 12193715 Furthermore, CD62L expression is necessary for this disease-delaying effect of CD4(+)CD25(+) cells in vivo, but not for their suppressor function in vitro.
2881 12193715 We demonstrate that the CD4(+)CD25(+)CD62L(+) splenocytes express CCR7 at high levels and migrate toward secondary lymphoid tissue chemokine and ELC (macrophage-inflammatory protein-3beta), lymphoid chemokines, whereas CD4(+)CD25(+)CD62L(-) splenocytes preferentially express CCR2, CCR4, and CXCR3 and migrate toward the corresponding inflammatory chemokines.
2882 12193715 These data demonstrate that CD4(+)CD25(+)CD62L(+), but not CD4(+)CD25(+)CD62L(-), splenocytes delay diabetes transfer, and that CD4(+)CD25(+) suppressor T cells are comprised of at least two subpopulations that behave differently in cotransfer in vivo and express distinct chemokine receptor and chemotactic response profiles despite demonstrating equivalent suppressor functions in vitro.
2883 12193715 The subpopulation of CD4+CD25+ splenocytes that delays adoptive transfer of diabetes expresses L-selectin and high levels of CCR7.
2884 12193715 Recently, CD4(+)CD25(+) T cells have been implicated in the control of diabetes, suggesting that the inflamed islets of Langerhans in prediabetic NOD mice are under peripheral immune surveillance.
2885 12193715 Here we show that CD4(+)CD25(+) splenocytes inhibit diabetes in cotransfer with islet-infiltrating cells.
2886 12193715 Furthermore, CD62L expression is necessary for this disease-delaying effect of CD4(+)CD25(+) cells in vivo, but not for their suppressor function in vitro.
2887 12193715 We demonstrate that the CD4(+)CD25(+)CD62L(+) splenocytes express CCR7 at high levels and migrate toward secondary lymphoid tissue chemokine and ELC (macrophage-inflammatory protein-3beta), lymphoid chemokines, whereas CD4(+)CD25(+)CD62L(-) splenocytes preferentially express CCR2, CCR4, and CXCR3 and migrate toward the corresponding inflammatory chemokines.
2888 12193715 These data demonstrate that CD4(+)CD25(+)CD62L(+), but not CD4(+)CD25(+)CD62L(-), splenocytes delay diabetes transfer, and that CD4(+)CD25(+) suppressor T cells are comprised of at least two subpopulations that behave differently in cotransfer in vivo and express distinct chemokine receptor and chemotactic response profiles despite demonstrating equivalent suppressor functions in vitro.
2889 12221281 Tumor necrosis factor-alpha regulation of CD4+CD25+ T cell levels in NOD mice.
2890 12221281 CD4+CD25+ T cells have been implicated as mediators of self-tolerance.
2891 12221281 We show (i) NOD mice have a relative deficiency of CD4+CD25+ T cells in thymus and spleen; (ii) administration of TNF or anti-TNF to NOD mice can modulate levels of this population consistent with their observed differential age-dependent effects on diabetes in the NOD mouse; (iii) CD4+CD25+ T cells from NOD mice treated neonatally with TNF show compromised effector function in a transfer system, whereas those treated neonatally with anti-TNF show no alteration in ability to prevent diabetes; and (iv) repeated injection of CD4+CD25+ T cells into neonatal NOD mice delays diabetes onset for as long as supplementation occurred.
2892 12221281 These data suggest that alterations in the number and function of CD4+CD25+ T cells may be one mechanism by which TNF and anti-TNF modulate type I diabetes mellitus in NOD mice.
2893 12221281 Tumor necrosis factor-alpha regulation of CD4+CD25+ T cell levels in NOD mice.
2894 12221281 CD4+CD25+ T cells have been implicated as mediators of self-tolerance.
2895 12221281 We show (i) NOD mice have a relative deficiency of CD4+CD25+ T cells in thymus and spleen; (ii) administration of TNF or anti-TNF to NOD mice can modulate levels of this population consistent with their observed differential age-dependent effects on diabetes in the NOD mouse; (iii) CD4+CD25+ T cells from NOD mice treated neonatally with TNF show compromised effector function in a transfer system, whereas those treated neonatally with anti-TNF show no alteration in ability to prevent diabetes; and (iv) repeated injection of CD4+CD25+ T cells into neonatal NOD mice delays diabetes onset for as long as supplementation occurred.
2896 12221281 These data suggest that alterations in the number and function of CD4+CD25+ T cells may be one mechanism by which TNF and anti-TNF modulate type I diabetes mellitus in NOD mice.
2897 12221281 Tumor necrosis factor-alpha regulation of CD4+CD25+ T cell levels in NOD mice.
2898 12221281 CD4+CD25+ T cells have been implicated as mediators of self-tolerance.
2899 12221281 We show (i) NOD mice have a relative deficiency of CD4+CD25+ T cells in thymus and spleen; (ii) administration of TNF or anti-TNF to NOD mice can modulate levels of this population consistent with their observed differential age-dependent effects on diabetes in the NOD mouse; (iii) CD4+CD25+ T cells from NOD mice treated neonatally with TNF show compromised effector function in a transfer system, whereas those treated neonatally with anti-TNF show no alteration in ability to prevent diabetes; and (iv) repeated injection of CD4+CD25+ T cells into neonatal NOD mice delays diabetes onset for as long as supplementation occurred.
2900 12221281 These data suggest that alterations in the number and function of CD4+CD25+ T cells may be one mechanism by which TNF and anti-TNF modulate type I diabetes mellitus in NOD mice.
2901 12221281 Tumor necrosis factor-alpha regulation of CD4+CD25+ T cell levels in NOD mice.
2902 12221281 CD4+CD25+ T cells have been implicated as mediators of self-tolerance.
2903 12221281 We show (i) NOD mice have a relative deficiency of CD4+CD25+ T cells in thymus and spleen; (ii) administration of TNF or anti-TNF to NOD mice can modulate levels of this population consistent with their observed differential age-dependent effects on diabetes in the NOD mouse; (iii) CD4+CD25+ T cells from NOD mice treated neonatally with TNF show compromised effector function in a transfer system, whereas those treated neonatally with anti-TNF show no alteration in ability to prevent diabetes; and (iv) repeated injection of CD4+CD25+ T cells into neonatal NOD mice delays diabetes onset for as long as supplementation occurred.
2904 12221281 These data suggest that alterations in the number and function of CD4+CD25+ T cells may be one mechanism by which TNF and anti-TNF modulate type I diabetes mellitus in NOD mice.
2905 12229124 Cytologic examination of the ascitic fluid revealed numerous abnormal lymphocytes which by flow cytometry demonstrated expression of CD5, CD19, CD20, and CD4.
2906 12296863 No preferential inactivation was shown in freshly sorted CD4+, CD8+, CD19+ cells or in IL-2 cultured CD4 and CD8 T cells, indicating that peripheral blood lymphocytes in these women are randomly selected.
2907 12296863 Moreover, only one single FOXP3 transcript was expressed by CD4 T cell clones analysed by RT-PCR, confirming that this gene is subject to X- inactivation.
2908 12296863 No preferential inactivation was shown in freshly sorted CD4+, CD8+, CD19+ cells or in IL-2 cultured CD4 and CD8 T cells, indicating that peripheral blood lymphocytes in these women are randomly selected.
2909 12296863 Moreover, only one single FOXP3 transcript was expressed by CD4 T cell clones analysed by RT-PCR, confirming that this gene is subject to X- inactivation.
2910 12365794 Fas and Fas ligand immunolocalization in pancreatic islets of NOD mice during spontaneous and cyclophosphamide-accelerated diabetes.
2911 12365794 Here, dual-label immunohistochemistry was employed to examine the intra-islet expression, distribution and cellular sources of Fas and FasL in the NOD mouse, during spontaneous diabetes (days 21, 40 and 90) and following acceleration of diabetes with cyclophosphamide (days 0, 4, 7, 11 and 14 after cyclophosphamide administration).
2912 12365794 FasL was expressed constitutively in most beta cells but not in glucagon or somatostatin cells or islet inflammatory cells and paralleled the loss of insulin immunolabelling with advancing disease.
2913 12365794 During spontaneous and cyclophosphamide diabetes, it was observed in a higher proportion of islet infiltrating macrophages than CD4 and CD8 T cells, concomitant with advancing insulitis.
2914 12365794 In cyclophosphamide-treated mice, the proportion of Fas-positive intra-islet CD4 and CD8 T cells at day 14 (with and without diabetes) was considerably higher than at days 0, 4, 7 and 11.
2915 12365794 Our results show constitutive expression of FasL in beta cells in the NOD mouse and predominant expression of Fas in intra-islet macrophages and to a lesser extent in T cells prior to diabetes onset.
2916 12365794 Interleukin-1beta in intra-islet macrophages may induce Fas and inducible nitric oxide synthase expression in an autocrine and paracrine manner and mediate beta cell destruction or even death of some macrophages and T cells.
2917 12365794 Fas and Fas ligand immunolocalization in pancreatic islets of NOD mice during spontaneous and cyclophosphamide-accelerated diabetes.
2918 12365794 Here, dual-label immunohistochemistry was employed to examine the intra-islet expression, distribution and cellular sources of Fas and FasL in the NOD mouse, during spontaneous diabetes (days 21, 40 and 90) and following acceleration of diabetes with cyclophosphamide (days 0, 4, 7, 11 and 14 after cyclophosphamide administration).
2919 12365794 FasL was expressed constitutively in most beta cells but not in glucagon or somatostatin cells or islet inflammatory cells and paralleled the loss of insulin immunolabelling with advancing disease.
2920 12365794 During spontaneous and cyclophosphamide diabetes, it was observed in a higher proportion of islet infiltrating macrophages than CD4 and CD8 T cells, concomitant with advancing insulitis.
2921 12365794 In cyclophosphamide-treated mice, the proportion of Fas-positive intra-islet CD4 and CD8 T cells at day 14 (with and without diabetes) was considerably higher than at days 0, 4, 7 and 11.
2922 12365794 Our results show constitutive expression of FasL in beta cells in the NOD mouse and predominant expression of Fas in intra-islet macrophages and to a lesser extent in T cells prior to diabetes onset.
2923 12365794 Interleukin-1beta in intra-islet macrophages may induce Fas and inducible nitric oxide synthase expression in an autocrine and paracrine manner and mediate beta cell destruction or even death of some macrophages and T cells.
2924 12390307 Protection induced by CTB-insulin was transferred to naive recipients by splenic CD4+ T cells.
2925 12390307 Reverse transcription-polymerase chain reaction analysis of recipients' pancreatic glands revealed an increase of TGF-beta and IL-10 transcripts after donor mice tolerization, while levels of IFN-gamma and IL-4 RNAs were unchanged.
2926 12390307 Higher amounts of IL-4 and IFN-gamma were noticed in pancreatic lymph nodes of tolerized mice upon in vitro stimulation.
2927 12391193 CD4-dependent generation of dominant transplantation tolerance induced by simultaneous perturbation of CD154 and LFA-1 pathways.
2928 12391193 CD154 and LFA-1 (CD11a) represent conceptually distinct pathways of receptor/ligand interactions (costimulation and adhesion/homing, respectively) that have been effectively targeted to induce long-term allograft acceptance and tolerance.
2929 12391193 In vitro analysis indicated that simultaneous targeting of CD154 and LFA-1 resulted in profound inhibition of alloreactivity, suggesting that combined anti-CD154/anti-LFA-1 therapy could be highly effective in vivo.
2930 12391193 Thus, we evaluated combining mAb therapies targeting CD154 and LFA-1 for inducing transplantation tolerance to pancreatic islet allografts.
2931 12391193 Therefore, simultaneous perturbation of CD154 and LFA-1 molecules can result in profound tolerance induction not accomplished through individual monotherapy approaches.
2932 12401711 We also found that the tendency of NOD mice to resist tolerance induction by costimulation blockade is mediated by both CD4+ and CD8+ T-cells, not directly linked to the presence of autoimmunity, and conferred by non-MHC background genes.
2933 12401715 Diabetes was characterized by diffuse CD4(+)CD8(+) T-cell infiltration of pancreatic islets and severe insulin deficiency, and ppIns, proinsulin, and insulin DNA were equally effective for disease induction.
2934 12419281 Insulin, phogrin and phogrin-peptide 7 (aa 755-777) but not phogrin-peptide 2 (aa 640-659) or tetanus toxin peptide were recognized as antigens.
2935 12419281 Islet cell-reactive and phogrin peptide 7-specific CD4(+) T-cell lines were generated from splenocytes of unprimed 4-week-old NOD females and shown to secrete Th1-type cytokines.
2936 12420105 Psoriasis is characterized by a dermal and epidermal infiltrate comprised predominantly of CD4(+) and CD8(+) T cells, respectively.
2937 12420105 Using an immunoperoxidase technique, cryostat sections were stained using antibodies to T-cell markers CD2, CD3, CD4 and CD8; cutaneous leucocyte associated antigen; NK cell markers CD16, CD56, CD57, CD94 and CD158a; and the NK-T cell marker CD161.
2938 12420105 There were significantly more cells expressing T cell markers, NK cell markers CD16, CD57, CD94 and CD158a and NK-T cell marker CD161 in involved skin than in uninvolved or normal skin ( P<0.01).
2939 12420105 Psoriasis is characterized by a dermal and epidermal infiltrate comprised predominantly of CD4(+) and CD8(+) T cells, respectively.
2940 12420105 Using an immunoperoxidase technique, cryostat sections were stained using antibodies to T-cell markers CD2, CD3, CD4 and CD8; cutaneous leucocyte associated antigen; NK cell markers CD16, CD56, CD57, CD94 and CD158a; and the NK-T cell marker CD161.
2941 12420105 There were significantly more cells expressing T cell markers, NK cell markers CD16, CD57, CD94 and CD158a and NK-T cell marker CD161 in involved skin than in uninvolved or normal skin ( P<0.01).
2942 12426635 Kinetics of TNF-alpha and IFN-gamma mRNA expression in islets and spleen of NOD mice.
2943 12426635 Cytokines produced by islet-infiltrating mononuclear cells may be directly cytotoxic and can be involved in islet destruction coordinated by CD4+ and CD8+ cells.
2944 12426635 We utilized a semiquantitative RT-PCR assay to analyze in vitro the mRNA expression of TNF-alpha and IFN-gamma cytokine genes in isolated islets (N = 100) and spleen cells (5 x 10(5) cells) from female NOD mice during the development of diabetes and from female CBA-j mice as a related control strain that does not develop diabetes.
2945 12426635 An increase in IFN-gamma expression in islets was observed for females aged 28 weeks (149 +/- 29 arbitrary units (AU), P<0.05, Student t-test) with advanced destructive insulitis when compared with CBA-j mice, while TNF-alpha was expressed in both NOD and CBA-j female islets at the same level at all ages studied.
2946 12426635 The data suggest that IFN-gamma and TNF-alpha expression in pancreatic islets of female NOD mice is associated with beta cell destruction and overt diabetes.
2947 12437993 Expression of ABCB1 (MDR1, P-glycoprotein) increases with age in CD4(+) and CD8(+) T-lymphocytes indicating that P-glycoprotein may be involved in the secretion of cytokines, growth factors, and cytotoxic molecules.
2948 12437993 Polymorphisms in the sulfonylurea receptor gene (ABCC8, SUR1) are associated with non-insulin-dependent diabetes mellitus (NIDDM).
2949 12444125 CTLA-4 is critical to the regulation of CD4 T cell homeostasis in vivo.
2950 12444170 Increased nonobese diabetic Th1:Th2 (IFN-gamma:IL-4) ratio is CD4+ T cell intrinsic and independent of APC genetic background.
2951 12444170 In this study, we demonstrate that increased IFN-gamma, decreased IL-4, and decreased IL-10 production in NOD T cells is CD4 T cell intrinsic.
2952 12444170 NOD CD4(+) T cells purified and stimulated with anti-CD3/anti-CD28 Abs generated greater IFN-gamma, less IL-4, and less IL-10 than B6.G7 CD4(+) T cells.
2953 12444170 Moreover, the increased IFN-gamma:IL-4 cytokine ratio was independent of the genetic background of APCs, since NOD CD4(+) T cells generated increased IFN-gamma and decreased IL-4 compared with B6.G7 CD4(+) T cells, regardless of whether they were stimulated with NOD or B6.G7 APCs.
2954 12444170 Cell cycle analysis showed that the cytokine differences were not due to cycle/proliferative differences between NOD and B6.G7, since stimulated CD4(+) T cells from both strains showed quantitatively identical entry into subsequent cell divisions (shown by CFSE staining), although NOD cells showed greater numbers of IFN-gamma-positive cells with each subsequent cell division.
2955 12444170 Moreover, 7-aminoactinomycin D and 5-bromo-2'-deoxyuridine analysis showed indistinguishable entry into G(0)/G(1), S, and G(2)/M phases of the cell cycle for both NOD and B6.G7 CD4(+) cells, with both strains generating IFN-gamma predominantly in the S phase.
2956 12444170 Increased nonobese diabetic Th1:Th2 (IFN-gamma:IL-4) ratio is CD4+ T cell intrinsic and independent of APC genetic background.
2957 12444170 In this study, we demonstrate that increased IFN-gamma, decreased IL-4, and decreased IL-10 production in NOD T cells is CD4 T cell intrinsic.
2958 12444170 NOD CD4(+) T cells purified and stimulated with anti-CD3/anti-CD28 Abs generated greater IFN-gamma, less IL-4, and less IL-10 than B6.G7 CD4(+) T cells.
2959 12444170 Moreover, the increased IFN-gamma:IL-4 cytokine ratio was independent of the genetic background of APCs, since NOD CD4(+) T cells generated increased IFN-gamma and decreased IL-4 compared with B6.G7 CD4(+) T cells, regardless of whether they were stimulated with NOD or B6.G7 APCs.
2960 12444170 Cell cycle analysis showed that the cytokine differences were not due to cycle/proliferative differences between NOD and B6.G7, since stimulated CD4(+) T cells from both strains showed quantitatively identical entry into subsequent cell divisions (shown by CFSE staining), although NOD cells showed greater numbers of IFN-gamma-positive cells with each subsequent cell division.
2961 12444170 Moreover, 7-aminoactinomycin D and 5-bromo-2'-deoxyuridine analysis showed indistinguishable entry into G(0)/G(1), S, and G(2)/M phases of the cell cycle for both NOD and B6.G7 CD4(+) cells, with both strains generating IFN-gamma predominantly in the S phase.
2962 12444170 Increased nonobese diabetic Th1:Th2 (IFN-gamma:IL-4) ratio is CD4+ T cell intrinsic and independent of APC genetic background.
2963 12444170 In this study, we demonstrate that increased IFN-gamma, decreased IL-4, and decreased IL-10 production in NOD T cells is CD4 T cell intrinsic.
2964 12444170 NOD CD4(+) T cells purified and stimulated with anti-CD3/anti-CD28 Abs generated greater IFN-gamma, less IL-4, and less IL-10 than B6.G7 CD4(+) T cells.
2965 12444170 Moreover, the increased IFN-gamma:IL-4 cytokine ratio was independent of the genetic background of APCs, since NOD CD4(+) T cells generated increased IFN-gamma and decreased IL-4 compared with B6.G7 CD4(+) T cells, regardless of whether they were stimulated with NOD or B6.G7 APCs.
2966 12444170 Cell cycle analysis showed that the cytokine differences were not due to cycle/proliferative differences between NOD and B6.G7, since stimulated CD4(+) T cells from both strains showed quantitatively identical entry into subsequent cell divisions (shown by CFSE staining), although NOD cells showed greater numbers of IFN-gamma-positive cells with each subsequent cell division.
2967 12444170 Moreover, 7-aminoactinomycin D and 5-bromo-2'-deoxyuridine analysis showed indistinguishable entry into G(0)/G(1), S, and G(2)/M phases of the cell cycle for both NOD and B6.G7 CD4(+) cells, with both strains generating IFN-gamma predominantly in the S phase.
2968 12444170 Increased nonobese diabetic Th1:Th2 (IFN-gamma:IL-4) ratio is CD4+ T cell intrinsic and independent of APC genetic background.
2969 12444170 In this study, we demonstrate that increased IFN-gamma, decreased IL-4, and decreased IL-10 production in NOD T cells is CD4 T cell intrinsic.
2970 12444170 NOD CD4(+) T cells purified and stimulated with anti-CD3/anti-CD28 Abs generated greater IFN-gamma, less IL-4, and less IL-10 than B6.G7 CD4(+) T cells.
2971 12444170 Moreover, the increased IFN-gamma:IL-4 cytokine ratio was independent of the genetic background of APCs, since NOD CD4(+) T cells generated increased IFN-gamma and decreased IL-4 compared with B6.G7 CD4(+) T cells, regardless of whether they were stimulated with NOD or B6.G7 APCs.
2972 12444170 Cell cycle analysis showed that the cytokine differences were not due to cycle/proliferative differences between NOD and B6.G7, since stimulated CD4(+) T cells from both strains showed quantitatively identical entry into subsequent cell divisions (shown by CFSE staining), although NOD cells showed greater numbers of IFN-gamma-positive cells with each subsequent cell division.
2973 12444170 Moreover, 7-aminoactinomycin D and 5-bromo-2'-deoxyuridine analysis showed indistinguishable entry into G(0)/G(1), S, and G(2)/M phases of the cell cycle for both NOD and B6.G7 CD4(+) cells, with both strains generating IFN-gamma predominantly in the S phase.
2974 12444170 Increased nonobese diabetic Th1:Th2 (IFN-gamma:IL-4) ratio is CD4+ T cell intrinsic and independent of APC genetic background.
2975 12444170 In this study, we demonstrate that increased IFN-gamma, decreased IL-4, and decreased IL-10 production in NOD T cells is CD4 T cell intrinsic.
2976 12444170 NOD CD4(+) T cells purified and stimulated with anti-CD3/anti-CD28 Abs generated greater IFN-gamma, less IL-4, and less IL-10 than B6.G7 CD4(+) T cells.
2977 12444170 Moreover, the increased IFN-gamma:IL-4 cytokine ratio was independent of the genetic background of APCs, since NOD CD4(+) T cells generated increased IFN-gamma and decreased IL-4 compared with B6.G7 CD4(+) T cells, regardless of whether they were stimulated with NOD or B6.G7 APCs.
2978 12444170 Cell cycle analysis showed that the cytokine differences were not due to cycle/proliferative differences between NOD and B6.G7, since stimulated CD4(+) T cells from both strains showed quantitatively identical entry into subsequent cell divisions (shown by CFSE staining), although NOD cells showed greater numbers of IFN-gamma-positive cells with each subsequent cell division.
2979 12444170 Moreover, 7-aminoactinomycin D and 5-bromo-2'-deoxyuridine analysis showed indistinguishable entry into G(0)/G(1), S, and G(2)/M phases of the cell cycle for both NOD and B6.G7 CD4(+) cells, with both strains generating IFN-gamma predominantly in the S phase.
2980 12444170 Increased nonobese diabetic Th1:Th2 (IFN-gamma:IL-4) ratio is CD4+ T cell intrinsic and independent of APC genetic background.
2981 12444170 In this study, we demonstrate that increased IFN-gamma, decreased IL-4, and decreased IL-10 production in NOD T cells is CD4 T cell intrinsic.
2982 12444170 NOD CD4(+) T cells purified and stimulated with anti-CD3/anti-CD28 Abs generated greater IFN-gamma, less IL-4, and less IL-10 than B6.G7 CD4(+) T cells.
2983 12444170 Moreover, the increased IFN-gamma:IL-4 cytokine ratio was independent of the genetic background of APCs, since NOD CD4(+) T cells generated increased IFN-gamma and decreased IL-4 compared with B6.G7 CD4(+) T cells, regardless of whether they were stimulated with NOD or B6.G7 APCs.
2984 12444170 Cell cycle analysis showed that the cytokine differences were not due to cycle/proliferative differences between NOD and B6.G7, since stimulated CD4(+) T cells from both strains showed quantitatively identical entry into subsequent cell divisions (shown by CFSE staining), although NOD cells showed greater numbers of IFN-gamma-positive cells with each subsequent cell division.
2985 12444170 Moreover, 7-aminoactinomycin D and 5-bromo-2'-deoxyuridine analysis showed indistinguishable entry into G(0)/G(1), S, and G(2)/M phases of the cell cycle for both NOD and B6.G7 CD4(+) cells, with both strains generating IFN-gamma predominantly in the S phase.
2986 12451259 Role of CD4+ and CD8+ T cells in the rejection of concordant pancreas xenografts.
2987 12464673 CCR4 was found exclusively on memory CD4(+) T cells during the progression of disease in NOD mice.
2988 12464673 Cells expressing the CCR4 ligand TARC (thymus- and activation-regulated chemokine) were detected within infiltrated islets from prediabetic mice.
2989 12464673 Interestingly, neutralization of macrophage-derived chemokine (MDC) with Ab caused a significant reduction of CCR4-positive T cells within the pancreatic infiltrates and inhibited the development of insulitis and diabetes.
2990 12464673 Furthermore, enhanced recruitment of CCR4-bearing cells in NOD mice resulting from transgenic expression of MDC resulted in acceleration of clinical disease.
2991 12473243 Purified CD62L+CD4+ cells from CTB-insulin fed mice significantly reduced the capacity of diabetogenic T cells to transfer diabetes in syngeneic recipients.
2992 12473243 In vitro stimulated CD62L+CD4+ cells from the spleen of fed animals secreted lower amounts of IL-4 and IL-10 but comparable levels of TGFbeta than CD62L-cells.
2993 12473243 A reduced IFN-gamma production between the two cell subsets was specifically observed in CTB-insulin fed mice.
2994 12473243 Taken together, our results suggest that L-selectin and alpha4-integrin have distinct but complementary roles in the generation and function of regulatory CD4+ T cells following CTB-insulin administration.
2995 12473243 Purified CD62L+CD4+ cells from CTB-insulin fed mice significantly reduced the capacity of diabetogenic T cells to transfer diabetes in syngeneic recipients.
2996 12473243 In vitro stimulated CD62L+CD4+ cells from the spleen of fed animals secreted lower amounts of IL-4 and IL-10 but comparable levels of TGFbeta than CD62L-cells.
2997 12473243 A reduced IFN-gamma production between the two cell subsets was specifically observed in CTB-insulin fed mice.
2998 12473243 Taken together, our results suggest that L-selectin and alpha4-integrin have distinct but complementary roles in the generation and function of regulatory CD4+ T cells following CTB-insulin administration.
2999 12473243 Purified CD62L+CD4+ cells from CTB-insulin fed mice significantly reduced the capacity of diabetogenic T cells to transfer diabetes in syngeneic recipients.
3000 12473243 In vitro stimulated CD62L+CD4+ cells from the spleen of fed animals secreted lower amounts of IL-4 and IL-10 but comparable levels of TGFbeta than CD62L-cells.
3001 12473243 A reduced IFN-gamma production between the two cell subsets was specifically observed in CTB-insulin fed mice.
3002 12473243 Taken together, our results suggest that L-selectin and alpha4-integrin have distinct but complementary roles in the generation and function of regulatory CD4+ T cells following CTB-insulin administration.
3003 12479819 The presence of NKT cells did not block the initial activation and expansion of the CD4(+) T cells but did inhibit their IL-2 and IFN-gamma production and later proliferation, resulting in an anergic phenotype.
3004 12500188 These observations were further confirmed by the results of CD4(+) enzyme-linked immunospot assay for interferon (IFN)-gamma and interleukin (IL)-4 and intracellular cytokine staining of IFN-gamma producing CD8(+) cells.
3005 12502802 A comparison of the frequency of gamma interferon (IFN-gamma)-producing CD4(+) and CD8(+) T cells in peripheral blood by ELISpot assay did not reveal any correlation between viral clearance and T-cell responses.
3006 12502802 In addition, analyses of IFN-gamma, IFN-alpha, and interleukin-4 mRNA levels in liver biopsies, presumably indicative of intrahepatic T-cell responses, revealed no distinct pattern in these chimpanzees with respect to infection outcome.
3007 12517935 Either IL-2 or IL-12 is sufficient to direct Th1 differentiation by nonobese diabetic T cells.
3008 12517935 We found that CD4(+) T cells from nonobese diabetic mice spontaneously differentiate into IFN-gamma-producing Th1 cells in response to polyclonal TCR stimulation in the absence of IL-12 and IFN-gamma.
3009 12517935 Instead, IL-2 was necessary and sufficient to direct T cell differentiation to the Th1 lineage by nonobese diabetic CD4(+) T cells.
3010 12517935 Either IL-2 or IL-12 is sufficient to direct Th1 differentiation by nonobese diabetic T cells.
3011 12517935 We found that CD4(+) T cells from nonobese diabetic mice spontaneously differentiate into IFN-gamma-producing Th1 cells in response to polyclonal TCR stimulation in the absence of IL-12 and IFN-gamma.
3012 12517935 Instead, IL-2 was necessary and sufficient to direct T cell differentiation to the Th1 lineage by nonobese diabetic CD4(+) T cells.
3013 12520519 Dendritic cells (DCs) not only induce but also modulate T cell activation. 1,25-dihydroxyvitamin D(3) [1,25(OH)(2)D(3)] induces DCs with a tolerogenic phenotype, characterized by decreased expression of CD40, CD80, and CD86 costimulatory molecules, low IL-12 and enhanced IL-10 secretion.
3014 12520519 The enhancement of CD4(+)CD25(+) regulatory T cells, able to mediate transplantation tolerance and to arrest type 1 diabetes development by a short oral treatment with VDR ligands, suggests possible clinical applications of this approach.
3015 12538715 FcR-binding "classical" anti-CD3 mAb is a potent immunosuppressive drug that alters CD4(+) and CD8(+) T cell function in vivo via anergy induction and programmed cell death (PCD).
3016 12538715 Anti-CD3-mediated PCD was Fas independent but was mediated by the mitochondria-initiated apoptosis that was abrogated in Bcl-x(L)-transgenic T cells.
3017 12538715 The PCD was more pronounced in CD28-deficient mice consistent with defective Bcl-x(L) up-regulation.
3018 12538715 Residual T cells isolated from anti-CD3-treated wild-type, CD28(-/-), and Bcl-x(L)-transgenic mice were hyporesponsive.
3019 12538715 The hyporesponsiveness was more pronounced in CD28(-/-) and wild-type mice treated with anti-B7-2, suggesting that CD28 interaction with B7-2 regulates T cell responsiveness in anti-CD3-treated animals.
3020 12540604 Specifically, and contrary to published reports, the thymocyte subset distribution, the rate and composition of thymic export, and the composition of the peripheral T-cell pool, including the proportion of CD25(+)CD4(+) T-cells, are essentially normal in prediabetic NOD mice.
3021 12540606 Accelerated diabetes in rat insulin promoter-tumor necrosis factor-alpha transgenic nonobese diabetic mice lacking major histocompatibility class II molecules.
3022 12540606 Surprisingly, although diabetes was evident in the F1 intercross expressing rat insulin promoter (RIP)-TNF, offspring lacking either endogenous or transgenic class II molecules developed accelerated diabetes with high frequency in both sexes.
3023 12540606 Thus, neonatal expression of TNF-alpha in an islet-specific manner bypassed the requirement of CD4(+) T-cells and resulted in diabetes that could be mediated by CD8(+) T-cells.
3024 12559622 We found that the myocardium of these patients was infiltrated by CD4(+) and CD8(+) T lymphocytes as well as macrophages.
3025 12559622 Finally, mRNA for interleukin-1beta, interferon-gamma, and tumor necrosis factor-alpha was detected in the cardiac specimens, although at a lower level compared with specimens from hearts without signs of viral infections.
3026 12563296 Recent data indicate that transforming growth factor-beta-dependent CD4+CD25+ regulatory T cells might have a central role in this effect.
3027 12569167 In a trial of an FcR nonbinding humanized anti-CD3 mAb hOKT3gamma1(Ala-Ala) for treatment of patients with type 1 diabetes, we found significant increases in IL-10 and IL-5 in the serum of 63% and 72% of patients, respectively, and TNF-alpha and IL-6 levels that were lower than those previously reported following OKT3 therapy.
3028 12569167 However, the production of IL-10, compared to IFN-gamma on a molar basis, was greater after culture with hOKT3gamma1(Ala-Ala) than with OKT3.
3029 12569167 Flow cytometric studies confirmed that OKT3 induced IFN-gamma and IL-10 production, but hOKT3gamma1(Ala-Ala) induced only detectable IL-10 production in CD45RO(+) cells.
3030 12569167 Moreover, in vivo, we found IL-10(+)CD4(+) T cells after drug treatment.
3031 12569167 These cells were heterogeneous but generally CD45RO(+), CTLA-4(-), and expressed CCR4.
3032 12574341 This hyperactivation was detected for different NF-kappaB complexes and correlated with increased IkappaBalpha degradation.
3033 12574341 Furthermore, increased NF-kappaB activation resulted in an enhanced capacity of NOD vs NOR or BALB/c Mphi to secrete IL-12(p70), TNF-alpha, and IL-1alpha, which was inhibited upon infection with an adenoviral recombinant encoding a modified form of IkappaBalpha.
3034 12574341 In contrast, elevated NF-kappaB activation had no significant effect on the capacity of NOD Mphi to stimulate CD4(+) or CD8(+) T cells in an Ag-specific manner.
3035 12594305 Skewing their cytokine production from a Th1 (primarily IFN-gamma) to a Th2 (primarily IL-4 and IL-10) pattern is a widely proposed approach to dampen the pathogenicity of autoreactive diabetogenic T cells.
3036 12594305 Murine CD4 T cells are characterized by a reciprocal relationship between the production of IFN-gamma and expression of the beta-chain component of its receptor (IFN-gamma RB).
3037 12594305 Thus, NOD mice constitutively expressing a CD2 promoter-driven IFN-gamma RB transgene in all T cells are Th1-deficient.
3038 12604308 We report that insulin promoter murine CD80 (RIP-CD80) transgenic mice are extraordinarily susceptible to autoantigen-induced diabetes, while spontaneous disease is rare.
3039 12604308 While both RIP-GP(+)and RIP-CD80(+)GP(+)mice mounted moderate CD4-independent CTL responses, only CD80(+)GP(+)mice developed severe insulitis and diabetes due to islet-infiltration of activated, gp33-specific, CD8(+)T cells.
3040 12604308 We conclude that aberrant CD80-expression in a peripheral tissue disrupts that tissue's natural resistance to CD8 T cell-mediated autoimmune destruction.
3041 12604315 We have recently reported that in patients with anti-glutamic acid decarboxylase (GAD) 65(+)diabetes with residual beta-cell function, most with a 'high-titer' (>10U/ml) required insulin within 5 years, whereas most with a 'low-titer' (1.3-9.9U/ml) did not need insulin for over 15-20 years after the onset.
3042 12604315 Although GAD65-reactive CD4(+)cells in the periphery were detected in both groups, a significant positive correlation between serum IP-10 level and the number of GAD65-reactive CD4(+)cells was observed only in the high-titer group.
3043 12604315 Therefore, it has been speculated that the co-existence of GAD65-reactive IFN-gamma-producing CD4(+)cells and a high serum IP-10 level may be important for rapid disease progression as seen in the high-titer group.
3044 12604315 We have recently reported that in patients with anti-glutamic acid decarboxylase (GAD) 65(+)diabetes with residual beta-cell function, most with a 'high-titer' (>10U/ml) required insulin within 5 years, whereas most with a 'low-titer' (1.3-9.9U/ml) did not need insulin for over 15-20 years after the onset.
3045 12604315 Although GAD65-reactive CD4(+)cells in the periphery were detected in both groups, a significant positive correlation between serum IP-10 level and the number of GAD65-reactive CD4(+)cells was observed only in the high-titer group.
3046 12604315 Therefore, it has been speculated that the co-existence of GAD65-reactive IFN-gamma-producing CD4(+)cells and a high serum IP-10 level may be important for rapid disease progression as seen in the high-titer group.
3047 12618479 A crucial role of CD4 T cells as a functional source of CD154 in the initiation of insulin-dependent diabetes mellitus in the non-obese diabetic mouse.
3048 12618479 Although the critical requirement of CD4 T cells in type I (insulin-dependent) diabetes mellitus (T1DM) has been well documented, information on the exact role(s) of CD4 T cells in T1DM development is still limited.
3049 12618479 Without CD154, CD4 T cells were not capable of mediating help in disease development in NOD mice.
3050 12618479 Taken collectively, these results indicated that CD4 T cells play a crucial role in T1DM as a source of CD154, and that the role of CD154 on CD4 T cells in insulitis may not be just to facilitate priming and expanding of auto-reactive CD8 T cells by activating antigen-presenting cells bearing islet antigens.
3051 12618479 A crucial role of CD4 T cells as a functional source of CD154 in the initiation of insulin-dependent diabetes mellitus in the non-obese diabetic mouse.
3052 12618479 Although the critical requirement of CD4 T cells in type I (insulin-dependent) diabetes mellitus (T1DM) has been well documented, information on the exact role(s) of CD4 T cells in T1DM development is still limited.
3053 12618479 Without CD154, CD4 T cells were not capable of mediating help in disease development in NOD mice.
3054 12618479 Taken collectively, these results indicated that CD4 T cells play a crucial role in T1DM as a source of CD154, and that the role of CD154 on CD4 T cells in insulitis may not be just to facilitate priming and expanding of auto-reactive CD8 T cells by activating antigen-presenting cells bearing islet antigens.
3055 12618479 A crucial role of CD4 T cells as a functional source of CD154 in the initiation of insulin-dependent diabetes mellitus in the non-obese diabetic mouse.
3056 12618479 Although the critical requirement of CD4 T cells in type I (insulin-dependent) diabetes mellitus (T1DM) has been well documented, information on the exact role(s) of CD4 T cells in T1DM development is still limited.
3057 12618479 Without CD154, CD4 T cells were not capable of mediating help in disease development in NOD mice.
3058 12618479 Taken collectively, these results indicated that CD4 T cells play a crucial role in T1DM as a source of CD154, and that the role of CD154 on CD4 T cells in insulitis may not be just to facilitate priming and expanding of auto-reactive CD8 T cells by activating antigen-presenting cells bearing islet antigens.
3059 12618479 A crucial role of CD4 T cells as a functional source of CD154 in the initiation of insulin-dependent diabetes mellitus in the non-obese diabetic mouse.
3060 12618479 Although the critical requirement of CD4 T cells in type I (insulin-dependent) diabetes mellitus (T1DM) has been well documented, information on the exact role(s) of CD4 T cells in T1DM development is still limited.
3061 12618479 Without CD154, CD4 T cells were not capable of mediating help in disease development in NOD mice.
3062 12618479 Taken collectively, these results indicated that CD4 T cells play a crucial role in T1DM as a source of CD154, and that the role of CD154 on CD4 T cells in insulitis may not be just to facilitate priming and expanding of auto-reactive CD8 T cells by activating antigen-presenting cells bearing islet antigens.
3063 12641818 Also CD4+ and CD8+ lymphocytes infiltrated in and/or around pancreatic islets in the CpG ODN-treated mice.
3064 12646622 Infections that induce autoimmune diabetes in BBDR rats modulate CD4+CD25+ T cell populations.
3065 12646622 Both viruses induced similar humoral and cellular immune responses in the host, but only RV also caused a decrease in splenic CD4(+)CD25(+) T cells in both BBDR rats and normal WF rats.
3066 12646622 Surprisingly, RV infection increased CD4(+)CD25(+) T cells in pancreatic lymph nodes of BBDR but not WF rats.
3067 12646622 This increase appeared to be due to the accumulation of nonproliferating CD4(+)CD25(+) T cells.
3068 12646622 The results imply that the reduction in splenic CD4(+)CD25(+) cells observed in RV-infected animals is virus specific, whereas the increase in pancreatic lymph node CD4(+)CD25(+) cells is both virus and rat strain specific.
3069 12646622 More generally, the results suggest a mechanism that could link an underlying genetic predisposition to environmental perturbation and transform a "regulated predisposition" into autoimmune diabetes, namely, failure to maintain regulatory CD4(+)CD25(+) T cell function.
3070 12646622 Infections that induce autoimmune diabetes in BBDR rats modulate CD4+CD25+ T cell populations.
3071 12646622 Both viruses induced similar humoral and cellular immune responses in the host, but only RV also caused a decrease in splenic CD4(+)CD25(+) T cells in both BBDR rats and normal WF rats.
3072 12646622 Surprisingly, RV infection increased CD4(+)CD25(+) T cells in pancreatic lymph nodes of BBDR but not WF rats.
3073 12646622 This increase appeared to be due to the accumulation of nonproliferating CD4(+)CD25(+) T cells.
3074 12646622 The results imply that the reduction in splenic CD4(+)CD25(+) cells observed in RV-infected animals is virus specific, whereas the increase in pancreatic lymph node CD4(+)CD25(+) cells is both virus and rat strain specific.
3075 12646622 More generally, the results suggest a mechanism that could link an underlying genetic predisposition to environmental perturbation and transform a "regulated predisposition" into autoimmune diabetes, namely, failure to maintain regulatory CD4(+)CD25(+) T cell function.
3076 12646622 Infections that induce autoimmune diabetes in BBDR rats modulate CD4+CD25+ T cell populations.
3077 12646622 Both viruses induced similar humoral and cellular immune responses in the host, but only RV also caused a decrease in splenic CD4(+)CD25(+) T cells in both BBDR rats and normal WF rats.
3078 12646622 Surprisingly, RV infection increased CD4(+)CD25(+) T cells in pancreatic lymph nodes of BBDR but not WF rats.
3079 12646622 This increase appeared to be due to the accumulation of nonproliferating CD4(+)CD25(+) T cells.
3080 12646622 The results imply that the reduction in splenic CD4(+)CD25(+) cells observed in RV-infected animals is virus specific, whereas the increase in pancreatic lymph node CD4(+)CD25(+) cells is both virus and rat strain specific.
3081 12646622 More generally, the results suggest a mechanism that could link an underlying genetic predisposition to environmental perturbation and transform a "regulated predisposition" into autoimmune diabetes, namely, failure to maintain regulatory CD4(+)CD25(+) T cell function.
3082 12646622 Infections that induce autoimmune diabetes in BBDR rats modulate CD4+CD25+ T cell populations.
3083 12646622 Both viruses induced similar humoral and cellular immune responses in the host, but only RV also caused a decrease in splenic CD4(+)CD25(+) T cells in both BBDR rats and normal WF rats.
3084 12646622 Surprisingly, RV infection increased CD4(+)CD25(+) T cells in pancreatic lymph nodes of BBDR but not WF rats.
3085 12646622 This increase appeared to be due to the accumulation of nonproliferating CD4(+)CD25(+) T cells.
3086 12646622 The results imply that the reduction in splenic CD4(+)CD25(+) cells observed in RV-infected animals is virus specific, whereas the increase in pancreatic lymph node CD4(+)CD25(+) cells is both virus and rat strain specific.
3087 12646622 More generally, the results suggest a mechanism that could link an underlying genetic predisposition to environmental perturbation and transform a "regulated predisposition" into autoimmune diabetes, namely, failure to maintain regulatory CD4(+)CD25(+) T cell function.
3088 12646622 Infections that induce autoimmune diabetes in BBDR rats modulate CD4+CD25+ T cell populations.
3089 12646622 Both viruses induced similar humoral and cellular immune responses in the host, but only RV also caused a decrease in splenic CD4(+)CD25(+) T cells in both BBDR rats and normal WF rats.
3090 12646622 Surprisingly, RV infection increased CD4(+)CD25(+) T cells in pancreatic lymph nodes of BBDR but not WF rats.
3091 12646622 This increase appeared to be due to the accumulation of nonproliferating CD4(+)CD25(+) T cells.
3092 12646622 The results imply that the reduction in splenic CD4(+)CD25(+) cells observed in RV-infected animals is virus specific, whereas the increase in pancreatic lymph node CD4(+)CD25(+) cells is both virus and rat strain specific.
3093 12646622 More generally, the results suggest a mechanism that could link an underlying genetic predisposition to environmental perturbation and transform a "regulated predisposition" into autoimmune diabetes, namely, failure to maintain regulatory CD4(+)CD25(+) T cell function.
3094 12646622 Infections that induce autoimmune diabetes in BBDR rats modulate CD4+CD25+ T cell populations.
3095 12646622 Both viruses induced similar humoral and cellular immune responses in the host, but only RV also caused a decrease in splenic CD4(+)CD25(+) T cells in both BBDR rats and normal WF rats.
3096 12646622 Surprisingly, RV infection increased CD4(+)CD25(+) T cells in pancreatic lymph nodes of BBDR but not WF rats.
3097 12646622 This increase appeared to be due to the accumulation of nonproliferating CD4(+)CD25(+) T cells.
3098 12646622 The results imply that the reduction in splenic CD4(+)CD25(+) cells observed in RV-infected animals is virus specific, whereas the increase in pancreatic lymph node CD4(+)CD25(+) cells is both virus and rat strain specific.
3099 12646622 More generally, the results suggest a mechanism that could link an underlying genetic predisposition to environmental perturbation and transform a "regulated predisposition" into autoimmune diabetes, namely, failure to maintain regulatory CD4(+)CD25(+) T cell function.
3100 12657523 Both the CD4(+) and CD8(+) subsets of T cells are required for the normal development of IDDM in NOD mice.
3101 12657523 We have isolated a GAD(65) reactive, cytotoxic CD8(+) T cell clone R1 that produces large quantities of IFNgamma and accelerates the onset of insulitis.
3102 12657523 This clone proliferates and produces IFNgamma in response to GAD(65) presenting APCs and kills GAD(65) presenting targets.
3103 12657523 Furthermore, it expresses TNFalpha, CD25, CD28, CD44, CD45 and LFA1, but not CD95L This is the first example of a GAD(65)specific CD8(+) T cell clone that accelerates the onset of the insulitis, although it does not appear to accelerate the onset of diabetes.
3104 12663785 Kinetics of CD4+ and CD8+ memory T-cell responses during hepatitis C virus rechallenge of previously recovered chimpanzees.
3105 12663785 The animal that most rapidly cleared circulating HCV as determined by nested reverse transcription-PCR (RT-PCR) displayed the most vigorous and sustained response of gamma interferon (IFN-gamma)-producing and proliferating CD4(+) T cells in the blood.
3106 12663785 Vigorous CD4(+) T-cell proliferation during viremia was followed by an increased frequency and a phenotypic and functional change of the tetramer(+) CD8(+) T-cell population.
3107 12663785 Kinetics of CD4+ and CD8+ memory T-cell responses during hepatitis C virus rechallenge of previously recovered chimpanzees.
3108 12663785 The animal that most rapidly cleared circulating HCV as determined by nested reverse transcription-PCR (RT-PCR) displayed the most vigorous and sustained response of gamma interferon (IFN-gamma)-producing and proliferating CD4(+) T cells in the blood.
3109 12663785 Vigorous CD4(+) T-cell proliferation during viremia was followed by an increased frequency and a phenotypic and functional change of the tetramer(+) CD8(+) T-cell population.
3110 12663785 Kinetics of CD4+ and CD8+ memory T-cell responses during hepatitis C virus rechallenge of previously recovered chimpanzees.
3111 12663785 The animal that most rapidly cleared circulating HCV as determined by nested reverse transcription-PCR (RT-PCR) displayed the most vigorous and sustained response of gamma interferon (IFN-gamma)-producing and proliferating CD4(+) T cells in the blood.
3112 12663785 Vigorous CD4(+) T-cell proliferation during viremia was followed by an increased frequency and a phenotypic and functional change of the tetramer(+) CD8(+) T-cell population.
3113 12694582 Preceding the clinical diagnosis of type I DM is a preclinical stage characterized by autoantibodies to insulin, glutamic acid decarboxylase (GAD) and a tyrosine phosphatase-like molecule (IA-2).
3114 12694582 In contrast, the progression to clinical disease appears associated with class I alleles A24, A30 and B18 while A1, A28, B14 and B56 appear negatively associated.
3115 12694582 These results are consistent with the view that CD4+ T cells responding to peptides in the context of class 2 molecules are responsible for initiating autoantibody production, while the destruction of islet cells leading to clinical expression of the disease is the function of CD8+ T cells recognizing relevant peptides in the context of class I molecules.
3116 12697265 In humans, genetic defects decreasing Fas function cause the Autoimmune Lymphoproliferative Syndrome (ALPS) where autoimmunities are associated with accumulation of polyclonal lymphocytes in the secondary lymphoid tissues and expansion of T cells lacking both CD4 and CD8 (DN cells).
3117 12711326 Prevention of autoimmune diabetes in NOD mice by troglitazone is associated with modulation of ICAM-1 expression on pancreatic islet cells and IFN-gamma expression in splenic T cells.
3118 12711326 Thiazolidinediones acting as PPAR-gamma agonists are a new generation of oral antidiabetics addressing insulin resistance as a main feature of type-2 diabetes.
3119 12711326 To investigate whether TGZ acts by affecting the ICAM-1/LFA-1 pathway and/or the Th1/Th2 cytokine balance in NOD mice, we analysed the IL-1beta-induced ICAM-1 expression on islet-cells and the LFA-1, CD25, IL-2, IFN-gamma, IL-4, and IL-10 expression on splenocytes.
3120 12711326 After 200 days of oral TGZ administration, islet cells from TGZ-treated NOD mice showed a reduced ICAM-1 expression in response to the pro-inflammatory cytokine IL-1beta.
3121 12711326 The expression of the ligand LFA-1 on CD4(+) and CD8(+) T-cells was comparable to that of placebo- and untreated controls.
3122 12727648 Dendritic cells (DCs) not only induce but also modulate T cell activation. 1,25-Dihydroxyvitamin D(3) [1,25-(OH)(2)D(3)] induces DCs with a tolerogenic phenotype, characterized by decreased expression of CD40, CD80, and CD86 co-stimulatory molecules, low IL-12, and enhanced IL-10 secretion.
3123 12727648 Graft acceptance is associated with impaired development of type 1 CD4(+) and CD8(+) cells and an increased percentage of CD4(+)CD25(+) regulatory cells expressing CD152 in the spleen and in the draining lymph node.
3124 12727648 CD4(+)CD25(+) cells that are able to inhibit the T cell response to a pancreatic autoantigen and to significantly delay disease transfer by pathogenic CD4(+)CD25(-) cells are also induced by treatment of adult nonobese diabetic (NOD) mice with a selected vitamin D receptor (VDR) ligand.
3125 12727648 The enhancement of CD4(+)CD25(+) regulatory T cells able to mediate transplantation tolerance and to arrest type 1 diabetes development by a short oral treatment with small organic compounds that induce tolerogenic DCs, like VDR ligands, suggests possible clinical applications of this approach.
3126 12727648 Dendritic cells (DCs) not only induce but also modulate T cell activation. 1,25-Dihydroxyvitamin D(3) [1,25-(OH)(2)D(3)] induces DCs with a tolerogenic phenotype, characterized by decreased expression of CD40, CD80, and CD86 co-stimulatory molecules, low IL-12, and enhanced IL-10 secretion.
3127 12727648 Graft acceptance is associated with impaired development of type 1 CD4(+) and CD8(+) cells and an increased percentage of CD4(+)CD25(+) regulatory cells expressing CD152 in the spleen and in the draining lymph node.
3128 12727648 CD4(+)CD25(+) cells that are able to inhibit the T cell response to a pancreatic autoantigen and to significantly delay disease transfer by pathogenic CD4(+)CD25(-) cells are also induced by treatment of adult nonobese diabetic (NOD) mice with a selected vitamin D receptor (VDR) ligand.
3129 12727648 The enhancement of CD4(+)CD25(+) regulatory T cells able to mediate transplantation tolerance and to arrest type 1 diabetes development by a short oral treatment with small organic compounds that induce tolerogenic DCs, like VDR ligands, suggests possible clinical applications of this approach.
3130 12727648 Dendritic cells (DCs) not only induce but also modulate T cell activation. 1,25-Dihydroxyvitamin D(3) [1,25-(OH)(2)D(3)] induces DCs with a tolerogenic phenotype, characterized by decreased expression of CD40, CD80, and CD86 co-stimulatory molecules, low IL-12, and enhanced IL-10 secretion.
3131 12727648 Graft acceptance is associated with impaired development of type 1 CD4(+) and CD8(+) cells and an increased percentage of CD4(+)CD25(+) regulatory cells expressing CD152 in the spleen and in the draining lymph node.
3132 12727648 CD4(+)CD25(+) cells that are able to inhibit the T cell response to a pancreatic autoantigen and to significantly delay disease transfer by pathogenic CD4(+)CD25(-) cells are also induced by treatment of adult nonobese diabetic (NOD) mice with a selected vitamin D receptor (VDR) ligand.
3133 12727648 The enhancement of CD4(+)CD25(+) regulatory T cells able to mediate transplantation tolerance and to arrest type 1 diabetes development by a short oral treatment with small organic compounds that induce tolerogenic DCs, like VDR ligands, suggests possible clinical applications of this approach.
3134 12727928 Here we show that proinsulin B24-C36 peptide binds to I-A(g7), the MHC class II molecule of the NOD mouse, and, after intranasal administration, induces regulatory CD4(+) T cells that, in the absence of CD8(+) T cells, block the adoptive transfer of diabetes.
3135 12727928 We then determined that B24-C36, and its core sequence B25-C34, bind to K(d), the NOD mouse MHC class I molecule, and elicit CD8(+) CTLs.
3136 12727928 When the CD8(+) T lymphocyte epitope was truncated at the C34 valine anchor residue for binding to K(d), the residual CD4(+) T cell epitope, B24-C32/33, significantly inhibited diabetes development after a single intranasal dose.
3137 12727928 Here we show that proinsulin B24-C36 peptide binds to I-A(g7), the MHC class II molecule of the NOD mouse, and, after intranasal administration, induces regulatory CD4(+) T cells that, in the absence of CD8(+) T cells, block the adoptive transfer of diabetes.
3138 12727928 We then determined that B24-C36, and its core sequence B25-C34, bind to K(d), the NOD mouse MHC class I molecule, and elicit CD8(+) CTLs.
3139 12727928 When the CD8(+) T lymphocyte epitope was truncated at the C34 valine anchor residue for binding to K(d), the residual CD4(+) T cell epitope, B24-C32/33, significantly inhibited diabetes development after a single intranasal dose.
3140 12742378 We have recently described an impaired proliferative response of CD4(+) T-cells to primary antigens in patients with insulin-dependent diabetes mellitus (IDDM) [Clin.
3141 12742378 In order to further investigate possible mechanisms underlying this impairment, several factors known to be involved in the down-regulation of the immune response both at the level of APCs and CD4(+) T-cells were investigated: Monocyte-derived dendritic cells (MDDC) from IDDM patients were shown to express elevated amounts of CD86 (B7.2) (p=0.003) and reduced amounts of the adhesion molecule CD54 (ICAM-1) (p=0.03) on their cell surface compared to age-matched healthy controls and patients with non-insulin-dependent diabetes mellitus (NIDDM) as well as decreased SDS-PAGE stability of HLA-DQ and -DR peptide complexes directly isolated from the IDDM patients' peripheral blood mononuclear cells (PBMCs).
3142 12742378 Expression of CTLA-4 (CD152), known to be involved in the down-regulation of the immune response, was shown to be increased on CD4(+) T-cells from IDDM patients after exposure to the primary antigen KLH (keyhole limpet hemocyanin) presented by MDDC (p=0.0047).
3143 12742378 Likewise, purified CD4(+) T-cells from IDDM patients produced elevated levels of the cytokine TGF-beta1 after stimulation with immobilized monoclonal antibodies directed against CD3 and CD28 (p=0.014).
3144 12742378 When monocytes from IDDM patients were stimulated with lipopolysaccharide (LPS), an increased tendency to produce the inhibitory cytokine interleukin (IL)-10 (p=0.007) and the acute phase cytokine IL-6 (p=0.044) was observed, whereas the concentrations of tumor necrosis factor (TNF)-alpha, IL-1beta, and IL-12 were comparable to controls.
3145 12742378 We have recently described an impaired proliferative response of CD4(+) T-cells to primary antigens in patients with insulin-dependent diabetes mellitus (IDDM) [Clin.
3146 12742378 In order to further investigate possible mechanisms underlying this impairment, several factors known to be involved in the down-regulation of the immune response both at the level of APCs and CD4(+) T-cells were investigated: Monocyte-derived dendritic cells (MDDC) from IDDM patients were shown to express elevated amounts of CD86 (B7.2) (p=0.003) and reduced amounts of the adhesion molecule CD54 (ICAM-1) (p=0.03) on their cell surface compared to age-matched healthy controls and patients with non-insulin-dependent diabetes mellitus (NIDDM) as well as decreased SDS-PAGE stability of HLA-DQ and -DR peptide complexes directly isolated from the IDDM patients' peripheral blood mononuclear cells (PBMCs).
3147 12742378 Expression of CTLA-4 (CD152), known to be involved in the down-regulation of the immune response, was shown to be increased on CD4(+) T-cells from IDDM patients after exposure to the primary antigen KLH (keyhole limpet hemocyanin) presented by MDDC (p=0.0047).
3148 12742378 Likewise, purified CD4(+) T-cells from IDDM patients produced elevated levels of the cytokine TGF-beta1 after stimulation with immobilized monoclonal antibodies directed against CD3 and CD28 (p=0.014).
3149 12742378 When monocytes from IDDM patients were stimulated with lipopolysaccharide (LPS), an increased tendency to produce the inhibitory cytokine interleukin (IL)-10 (p=0.007) and the acute phase cytokine IL-6 (p=0.044) was observed, whereas the concentrations of tumor necrosis factor (TNF)-alpha, IL-1beta, and IL-12 were comparable to controls.
3150 12742378 We have recently described an impaired proliferative response of CD4(+) T-cells to primary antigens in patients with insulin-dependent diabetes mellitus (IDDM) [Clin.
3151 12742378 In order to further investigate possible mechanisms underlying this impairment, several factors known to be involved in the down-regulation of the immune response both at the level of APCs and CD4(+) T-cells were investigated: Monocyte-derived dendritic cells (MDDC) from IDDM patients were shown to express elevated amounts of CD86 (B7.2) (p=0.003) and reduced amounts of the adhesion molecule CD54 (ICAM-1) (p=0.03) on their cell surface compared to age-matched healthy controls and patients with non-insulin-dependent diabetes mellitus (NIDDM) as well as decreased SDS-PAGE stability of HLA-DQ and -DR peptide complexes directly isolated from the IDDM patients' peripheral blood mononuclear cells (PBMCs).
3152 12742378 Expression of CTLA-4 (CD152), known to be involved in the down-regulation of the immune response, was shown to be increased on CD4(+) T-cells from IDDM patients after exposure to the primary antigen KLH (keyhole limpet hemocyanin) presented by MDDC (p=0.0047).
3153 12742378 Likewise, purified CD4(+) T-cells from IDDM patients produced elevated levels of the cytokine TGF-beta1 after stimulation with immobilized monoclonal antibodies directed against CD3 and CD28 (p=0.014).
3154 12742378 When monocytes from IDDM patients were stimulated with lipopolysaccharide (LPS), an increased tendency to produce the inhibitory cytokine interleukin (IL)-10 (p=0.007) and the acute phase cytokine IL-6 (p=0.044) was observed, whereas the concentrations of tumor necrosis factor (TNF)-alpha, IL-1beta, and IL-12 were comparable to controls.
3155 12742378 We have recently described an impaired proliferative response of CD4(+) T-cells to primary antigens in patients with insulin-dependent diabetes mellitus (IDDM) [Clin.
3156 12742378 In order to further investigate possible mechanisms underlying this impairment, several factors known to be involved in the down-regulation of the immune response both at the level of APCs and CD4(+) T-cells were investigated: Monocyte-derived dendritic cells (MDDC) from IDDM patients were shown to express elevated amounts of CD86 (B7.2) (p=0.003) and reduced amounts of the adhesion molecule CD54 (ICAM-1) (p=0.03) on their cell surface compared to age-matched healthy controls and patients with non-insulin-dependent diabetes mellitus (NIDDM) as well as decreased SDS-PAGE stability of HLA-DQ and -DR peptide complexes directly isolated from the IDDM patients' peripheral blood mononuclear cells (PBMCs).
3157 12742378 Expression of CTLA-4 (CD152), known to be involved in the down-regulation of the immune response, was shown to be increased on CD4(+) T-cells from IDDM patients after exposure to the primary antigen KLH (keyhole limpet hemocyanin) presented by MDDC (p=0.0047).
3158 12742378 Likewise, purified CD4(+) T-cells from IDDM patients produced elevated levels of the cytokine TGF-beta1 after stimulation with immobilized monoclonal antibodies directed against CD3 and CD28 (p=0.014).
3159 12742378 When monocytes from IDDM patients were stimulated with lipopolysaccharide (LPS), an increased tendency to produce the inhibitory cytokine interleukin (IL)-10 (p=0.007) and the acute phase cytokine IL-6 (p=0.044) was observed, whereas the concentrations of tumor necrosis factor (TNF)-alpha, IL-1beta, and IL-12 were comparable to controls.
3160 12748380 Adoptive transfer of lymphocytes from HCV-LP-immunized mice to naive mice provided protection against vvHCV.S challenge, and this transferred immunity can be abrogated by either CD4 or CD8 depletion.
3161 12748380 Our results suggest that HCV-LPs can induce humoral and cellular immune responses that are protective in a surrogate HCV challenge model and that a strong cellular immunity provided by both CD4 and CD8 effector lymphocytes may be important for protection from HCV infection.
3162 12748380 Adoptive transfer of lymphocytes from HCV-LP-immunized mice to naive mice provided protection against vvHCV.S challenge, and this transferred immunity can be abrogated by either CD4 or CD8 depletion.
3163 12748380 Our results suggest that HCV-LPs can induce humoral and cellular immune responses that are protective in a surrogate HCV challenge model and that a strong cellular immunity provided by both CD4 and CD8 effector lymphocytes may be important for protection from HCV infection.
3164 12753807 Moreover, both CD4(+)and CD8(+)subsets were affected.
3165 12753807 Gene expression analysis using real-time RT-PCR additionally revealed low expression of Fas and FasL, the death receptor system activating caspase 8 and contributing to AICD.
3166 12759426 IL-12 administration accelerates autoimmune diabetes in both wild-type and IFN-gamma-deficient nonobese diabetic mice, revealing pathogenic and protective effects of IL-12-induced IFN-gamma.
3167 12759426 IL-12 administration to nonobese diabetic (NOD) mice induces IFN-gamma-secreting type 1 T cells and high circulating IFN-gamma levels and accelerates insulin-dependent diabetes mellitus (IDDM).
3168 12759426 Here we show that IL-12-induced IFN-gamma production is dispensable for diabetes acceleration, because exogenous IL-12 could enhance IDDM development in IFN-gamma-deficient as well as in IFN-gamma-sufficient NOD mice.
3169 12759426 Both in IFN-gamma(+/-) and IFN-gamma(-/-) NOD mice, IL-12 administration generates a massive and destructive insulitis characterized by T cells, macrophages, and CD11c(+) dendritic cells, and increases the number of pancreatic CD4(+) cells secreting IL-2 and TNF-alpha.
3170 12759426 Surprisingly, IL-12-induced IFN-gamma hinders pancreatic B cell infiltration and inhibits the capacity of APCs to activate T cells.
3171 12759426 Although pancreatic CD4(+) T cells from IL-12-treated IFN-gamma(-/-) mice fail to up-regulate the P-selectin ligand, suggesting that their entry into the pancreas may be impaired, T cell expansion is favored in these mice compared with IL-12-treated IFN-gamma(+/-) mice because IL-12 administration in the absence of IFN-gamma leads to enhanced cell proliferation and reduced T cell apoptosis.
3172 12759426 NO, an effector molecule in beta cell destruction, is produced ex vivo in high quantity by pancreas-infiltrating cells through a mechanism involving IL-12-induced IFN-gamma.
3173 12759426 Conversely, in IL-12-treated IFN-gamma-deficient mice, other pathways of beta cell death appear to be increased, as indicated by the up-regulated expression of Fas ligand on Th1 cells in the absence of IFN-gamma.
3174 12759426 These data demonstrate that IFN-gamma has a dual role, pathogenic and protective, in IDDM development, and its deletion allows IL-12 to establish alternative pathways leading to diabetes acceleration.
3175 12759426 IL-12 administration accelerates autoimmune diabetes in both wild-type and IFN-gamma-deficient nonobese diabetic mice, revealing pathogenic and protective effects of IL-12-induced IFN-gamma.
3176 12759426 IL-12 administration to nonobese diabetic (NOD) mice induces IFN-gamma-secreting type 1 T cells and high circulating IFN-gamma levels and accelerates insulin-dependent diabetes mellitus (IDDM).
3177 12759426 Here we show that IL-12-induced IFN-gamma production is dispensable for diabetes acceleration, because exogenous IL-12 could enhance IDDM development in IFN-gamma-deficient as well as in IFN-gamma-sufficient NOD mice.
3178 12759426 Both in IFN-gamma(+/-) and IFN-gamma(-/-) NOD mice, IL-12 administration generates a massive and destructive insulitis characterized by T cells, macrophages, and CD11c(+) dendritic cells, and increases the number of pancreatic CD4(+) cells secreting IL-2 and TNF-alpha.
3179 12759426 Surprisingly, IL-12-induced IFN-gamma hinders pancreatic B cell infiltration and inhibits the capacity of APCs to activate T cells.
3180 12759426 Although pancreatic CD4(+) T cells from IL-12-treated IFN-gamma(-/-) mice fail to up-regulate the P-selectin ligand, suggesting that their entry into the pancreas may be impaired, T cell expansion is favored in these mice compared with IL-12-treated IFN-gamma(+/-) mice because IL-12 administration in the absence of IFN-gamma leads to enhanced cell proliferation and reduced T cell apoptosis.
3181 12759426 NO, an effector molecule in beta cell destruction, is produced ex vivo in high quantity by pancreas-infiltrating cells through a mechanism involving IL-12-induced IFN-gamma.
3182 12759426 Conversely, in IL-12-treated IFN-gamma-deficient mice, other pathways of beta cell death appear to be increased, as indicated by the up-regulated expression of Fas ligand on Th1 cells in the absence of IFN-gamma.
3183 12759426 These data demonstrate that IFN-gamma has a dual role, pathogenic and protective, in IDDM development, and its deletion allows IL-12 to establish alternative pathways leading to diabetes acceleration.
3184 12763479 TCR-activated NOD splenic CD4+ and CD8+ T cells are more resistant to AICD than control strain C57BL/6, BALB/c, and NOR T cells.
3185 12763479 NOR CD4+ but not CD8+ T cells are resistant to TCR-induced AICD.
3186 12763479 Whereas c-FLIP expression is reduced in activated T cells from control strains, it persists in activated NOD CD8+ T cells and is accompanied by diminished activity of caspase-3 and -8.
3187 12763479 IL-4 reduces this c-FLIP expression and increases caspase-3 and -8 activity in activated NOD CD8+ T cells.
3188 12763479 Moreover, IL-4 and CD28 costimulation restores the susceptibility of NOD CD8+ T cells to AICD, and this is associated with increased expression of CD25, CD95, CD95L, and TNFR2.
3189 12763479 TCR-activated NOD splenic CD4+ and CD8+ T cells are more resistant to AICD than control strain C57BL/6, BALB/c, and NOR T cells.
3190 12763479 NOR CD4+ but not CD8+ T cells are resistant to TCR-induced AICD.
3191 12763479 Whereas c-FLIP expression is reduced in activated T cells from control strains, it persists in activated NOD CD8+ T cells and is accompanied by diminished activity of caspase-3 and -8.
3192 12763479 IL-4 reduces this c-FLIP expression and increases caspase-3 and -8 activity in activated NOD CD8+ T cells.
3193 12763479 Moreover, IL-4 and CD28 costimulation restores the susceptibility of NOD CD8+ T cells to AICD, and this is associated with increased expression of CD25, CD95, CD95L, and TNFR2.
3194 12765954 Cellular xenograft rejection involves a pronounced contribution of CD4 T-cells recognizing antigens in association with recipient MHC class II molecules.
3195 12765954 Although all types of grafts rejected acutely in wild-type mice, this response demonstrated markedly differing dependence on host MHC class II antigen presentation, depending on the donor species.
3196 12765955 Reduced insulitis in L-AGE versus H-AGE mice (P < 0.01) was marked by GAD- and insulin-unresponsive pancreatic interleukin (IL)-4-positive CD4+ cells compared with the GAD- and insulin-responsive interferon (IFN)-gamma-positive T-cells from H-AGE mice (P < 0.005).
3197 12765955 Splenocytes from L-AGE mice consisted of GAD- and insulin-responsive IL-10-positive CD4+ cells compared with the IFN-gamma-positive T-cells from H-AGE mice (P < 0.005).
3198 12765955 Reduced insulitis in L-AGE versus H-AGE mice (P < 0.01) was marked by GAD- and insulin-unresponsive pancreatic interleukin (IL)-4-positive CD4+ cells compared with the GAD- and insulin-responsive interferon (IFN)-gamma-positive T-cells from H-AGE mice (P < 0.005).
3199 12765955 Splenocytes from L-AGE mice consisted of GAD- and insulin-responsive IL-10-positive CD4+ cells compared with the IFN-gamma-positive T-cells from H-AGE mice (P < 0.005).
3200 12818140 The %age number of CD19+, CD5+/CD20+ B lymphocytes and CD3+, CD4+, CD8+, CD4+/DR+, CD8+/DR+ T lymphocytes subpopulations were investigated in the peripheral blood.
3201 12818140 The elevated number of CD5+ B lymphocytes correlated with presence of activated lymphocytes T (CD4+/DR+ and CD8+/DR+).
3202 12818140 The total number of CD19+, CCD3+, CD4+, CD8+ lymphocytes was on comparable level in both groups.
3203 12818140 The %age number of CD19+, CD5+/CD20+ B lymphocytes and CD3+, CD4+, CD8+, CD4+/DR+, CD8+/DR+ T lymphocytes subpopulations were investigated in the peripheral blood.
3204 12818140 The elevated number of CD5+ B lymphocytes correlated with presence of activated lymphocytes T (CD4+/DR+ and CD8+/DR+).
3205 12818140 The total number of CD19+, CCD3+, CD4+, CD8+ lymphocytes was on comparable level in both groups.
3206 12818140 The %age number of CD19+, CD5+/CD20+ B lymphocytes and CD3+, CD4+, CD8+, CD4+/DR+, CD8+/DR+ T lymphocytes subpopulations were investigated in the peripheral blood.
3207 12818140 The elevated number of CD5+ B lymphocytes correlated with presence of activated lymphocytes T (CD4+/DR+ and CD8+/DR+).
3208 12818140 The total number of CD19+, CCD3+, CD4+, CD8+ lymphocytes was on comparable level in both groups.
3209 12819471 Clinically, IPEX manifests most commonly with diarrhea, insulin-dependent diabetes mellitus, thyroid disorders, and eczema.
3210 12819471 FOXP3, the gene responsible for IPEX, maps to chromosome Xp11.23-Xq13.3 and encodes a putative DNA-binding protein of the forkhead family.
3211 12819471 Recent data indicate that FOXP3 is expressed primarily in the CD4+CD25+ regulatory T-cell subset, where it may function as a transcriptional repressor and key modulator of regulatory T-cell fate and function.
3212 12866664 Concomitant with the insulin receptors, two other growth factor receptors (IGF-1 and IL-2) also emerge on the T lymphocyte cell surface along with intracellular signal transduction mechanisms and insulin degrading enzyme (IDE).
3213 12866664 In activated T-lymphocytes, insulin stimulates glucose uptake, glucose oxidation, pyruvate flux and pyruvate dehydrogenase activity, amino acid transport, lipid metabolism and protein synthesis.
3214 12866664 Our studies show that patients with diabetic ketoacidosis and hyperglycemia have increased proinflammatory cytokines and activated CD4+ and CD8+ T lymphocytes.
3215 12866664 The mechanisms underlying insulin action, in general, or in the CD4+ and CD8+ T-lymphocytes, in particular, have not been clearly elucidated.
3216 12866664 Concomitant with the insulin receptors, two other growth factor receptors (IGF-1 and IL-2) also emerge on the T lymphocyte cell surface along with intracellular signal transduction mechanisms and insulin degrading enzyme (IDE).
3217 12866664 In activated T-lymphocytes, insulin stimulates glucose uptake, glucose oxidation, pyruvate flux and pyruvate dehydrogenase activity, amino acid transport, lipid metabolism and protein synthesis.
3218 12866664 Our studies show that patients with diabetic ketoacidosis and hyperglycemia have increased proinflammatory cytokines and activated CD4+ and CD8+ T lymphocytes.
3219 12866664 The mechanisms underlying insulin action, in general, or in the CD4+ and CD8+ T-lymphocytes, in particular, have not been clearly elucidated.
3220 12874472 In vivo CD4(+) and CD8(+) T cell-depleting strategies and genetically altered mice that did not express MHC class I or class II antigens were used to study the allorecognition and effector pathways of islet allograft rejection in different strains of mice, including autoimmunity-prone nonobese diabetic (NOD) mice.
3221 12874472 In BALB/c mice, islet rejection depended on both CD4(+) and CD8(+) T cells.
3222 12874472 In C57BL/6 mice, CD8(+) T cells could eventually mediate islet rejection by themselves, but they produced rejection more efficiently with help from CD4(+) T cells stimulated through either the direct or indirect pathway.
3223 12874472 In vivo CD4(+) and CD8(+) T cell-depleting strategies and genetically altered mice that did not express MHC class I or class II antigens were used to study the allorecognition and effector pathways of islet allograft rejection in different strains of mice, including autoimmunity-prone nonobese diabetic (NOD) mice.
3224 12874472 In BALB/c mice, islet rejection depended on both CD4(+) and CD8(+) T cells.
3225 12874472 In C57BL/6 mice, CD8(+) T cells could eventually mediate islet rejection by themselves, but they produced rejection more efficiently with help from CD4(+) T cells stimulated through either the direct or indirect pathway.
3226 12874472 In vivo CD4(+) and CD8(+) T cell-depleting strategies and genetically altered mice that did not express MHC class I or class II antigens were used to study the allorecognition and effector pathways of islet allograft rejection in different strains of mice, including autoimmunity-prone nonobese diabetic (NOD) mice.
3227 12874472 In BALB/c mice, islet rejection depended on both CD4(+) and CD8(+) T cells.
3228 12874472 In C57BL/6 mice, CD8(+) T cells could eventually mediate islet rejection by themselves, but they produced rejection more efficiently with help from CD4(+) T cells stimulated through either the direct or indirect pathway.
3229 12885158 To study how these T cells interact following encounter with the self-protein they recognize in the periphery, we have developed an adoptive transfer system in which HEL-specific TCR transgenic CD4 T cells are transferred to mice expressing HEL protein in the pancreas under the control of the rat insulin promoter.
3230 12887108 The strong associations between poor vitamin D nutrition, particular VDR alleles, and susceptibility to chronic mycobacterial infections, together with evidence that 1alpha,25-(OH)2D3 served as a vaccine adjuvant enhancing antibody-mediated immunity, suggest a model wherein high levels of 1alpha,25-(OH)2D3-liganded VDR transcriptional activity may promote the CD4+ T helper 2 (Th2) cell-mediated and mucosal antibody responses to cutaneous antigens in vivo.
3231 12887108 Studies done in animal models of multiple sclerosis (MS), insulin-dependent diabetes mellitus (IDDM), inflammatory bowel disease (IBD), and transplantation support a model wherein the 1alpha,25-(OH)2D3 may augment the function of suppressor T cells that maintain self tolerance to organ-specific self antigens.
3232 12917258 Inflammatory sites associated with tissue destruction often contain a complex mixture of cells including macrophages as well as CD8+ and CD4+ T cells.
3233 12917258 CD8+ T cells triggered NO production by macrophages, while macrophages triggered IFN-gamma production by CD8+ T cells.
3234 12917258 Antibodies specific for ICAM-1 and LFA-1 inhibited both cooperative islet destruction and cross-stimulation of CD8+ T cells and macrophages.
3235 12928371 Systemic overexpression of IL-10 induces CD4+CD25+ cell populations in vivo and ameliorates type 1 diabetes in nonobese diabetic mice in a dose-dependent fashion.
3236 12928371 The rAAV-IL-10 therapy attenuated pancreatic insulitis, decreased MHC II expression on CD11b+ cells, increased the population of CD11b+ cells, and modulated insulin autoantibody production.
3237 12928371 Interestingly, rAAV-IL-10 therapy dramatically increased the percentage of CD4+CD25+ regulatory T cells.
3238 12928371 Systemic overexpression of IL-10 induces CD4+CD25+ cell populations in vivo and ameliorates type 1 diabetes in nonobese diabetic mice in a dose-dependent fashion.
3239 12928371 The rAAV-IL-10 therapy attenuated pancreatic insulitis, decreased MHC II expression on CD11b+ cells, increased the population of CD11b+ cells, and modulated insulin autoantibody production.
3240 12928371 Interestingly, rAAV-IL-10 therapy dramatically increased the percentage of CD4+CD25+ regulatory T cells.
3241 12930356 Critical roles of CD30/CD30L interactions in murine autoimmune diabetes.
3242 12930356 CD30/CD30L is a member of tumour necrosis factor (TNF) receptor/TNF superfamily and has been implicated in immune-regulation.
3243 12930356 In this study, we investigated the involvement of CD30/CD30L in the development of diabetes in NOD mice.
3244 12930356 Flow cytometric analysis showed that CD30 and CD30L were highly expressed on CD4+ or CD8+ T cells in the spleen and pancreatic lymph node of younger NOD mice.
3245 12930356 In addition, islet-specific CD4+ or CD8+ T cell lines expressed CD30 and CD30L.
3246 12930356 In addition, the treatment with anti-CD30L mAb also inhibited the development of diabetes induced by adoptive transfer of spleen cells from diabetic NOD mice or islet-specific CD4+ or CD8+ T cell lines into NOD-SCID mice.
3247 12930356 These results suggested that CD30/CD30L interaction plays important roles in both induction and effector phases of autoimmune diabetes in NOD mice.
3248 12930356 Critical roles of CD30/CD30L interactions in murine autoimmune diabetes.
3249 12930356 CD30/CD30L is a member of tumour necrosis factor (TNF) receptor/TNF superfamily and has been implicated in immune-regulation.
3250 12930356 In this study, we investigated the involvement of CD30/CD30L in the development of diabetes in NOD mice.
3251 12930356 Flow cytometric analysis showed that CD30 and CD30L were highly expressed on CD4+ or CD8+ T cells in the spleen and pancreatic lymph node of younger NOD mice.
3252 12930356 In addition, islet-specific CD4+ or CD8+ T cell lines expressed CD30 and CD30L.
3253 12930356 In addition, the treatment with anti-CD30L mAb also inhibited the development of diabetes induced by adoptive transfer of spleen cells from diabetic NOD mice or islet-specific CD4+ or CD8+ T cell lines into NOD-SCID mice.
3254 12930356 These results suggested that CD30/CD30L interaction plays important roles in both induction and effector phases of autoimmune diabetes in NOD mice.
3255 12930356 Critical roles of CD30/CD30L interactions in murine autoimmune diabetes.
3256 12930356 CD30/CD30L is a member of tumour necrosis factor (TNF) receptor/TNF superfamily and has been implicated in immune-regulation.
3257 12930356 In this study, we investigated the involvement of CD30/CD30L in the development of diabetes in NOD mice.
3258 12930356 Flow cytometric analysis showed that CD30 and CD30L were highly expressed on CD4+ or CD8+ T cells in the spleen and pancreatic lymph node of younger NOD mice.
3259 12930356 In addition, islet-specific CD4+ or CD8+ T cell lines expressed CD30 and CD30L.
3260 12930356 In addition, the treatment with anti-CD30L mAb also inhibited the development of diabetes induced by adoptive transfer of spleen cells from diabetic NOD mice or islet-specific CD4+ or CD8+ T cell lines into NOD-SCID mice.
3261 12930356 These results suggested that CD30/CD30L interaction plays important roles in both induction and effector phases of autoimmune diabetes in NOD mice.
3262 12937416 Here we report that treatment with CD3epsilon-specific antibodies induces transferable T-cell-mediated tolerance involving CD4+CD25+ cells.
3263 12937416 However, these CD4+CD25+ T cells are distinct from naturally occurring regulatory T cells that control physiological autoreactivity.
3264 12937416 The central role of TGF-beta was further suggested by its increased, long-lasting production by CD4+ T cells from tolerant mice.
3265 12937416 Here we report that treatment with CD3epsilon-specific antibodies induces transferable T-cell-mediated tolerance involving CD4+CD25+ cells.
3266 12937416 However, these CD4+CD25+ T cells are distinct from naturally occurring regulatory T cells that control physiological autoreactivity.
3267 12937416 The central role of TGF-beta was further suggested by its increased, long-lasting production by CD4+ T cells from tolerant mice.
3268 12937416 Here we report that treatment with CD3epsilon-specific antibodies induces transferable T-cell-mediated tolerance involving CD4+CD25+ cells.
3269 12937416 However, these CD4+CD25+ T cells are distinct from naturally occurring regulatory T cells that control physiological autoreactivity.
3270 12937416 The central role of TGF-beta was further suggested by its increased, long-lasting production by CD4+ T cells from tolerant mice.
3271 12949259 CD4+CD25+ T regulatory cells control anti-islet CD8+ T cells through TGF-beta-TGF-beta receptor interactions in type 1 diabetes.
3272 12949259 Pancreatic lymph node-derived CD4+CD25+ T regulatory (Treg) cells inhibit in situ differentiation of islet-reactive CD8+ T cells into cytotoxic T lymphocytes, thereby preventing diabetes progression.
3273 12949259 Here, we show by using a CD8+ T cell-mediated model of type 1 diabetes that transforming growth factor (TGF)-beta-TGF-beta receptor signals are critical for CD4+CD25+ Treg cell regulation of autoreactive islet-specific cytotoxic T lymphocytes.
3274 12949259 Transgenic expression of tumor necrosis factor alpha from birth to 25 days of age in the islets of B6 mice that constitutively express CD80 on their beta cells results in accumulation of CD4+CD25+TGF-beta+ cells exclusively in the islets and pancreatic lymph nodes, which delays diabetes progression.
3275 12949259 In contrast, expression of tumor necrosis factor alpha until 28 days of age prevents islet accumulation of CD4+CD25+TGF-beta+ Treg cells, resulting in acceleration to diabetes.
3276 12949259 Furthermore, adoptive transfer experiments demonstrated that CD4+CD25+ Treg cells could not control naïve or activated islet-reactive CD8+ T cells bearing a dominant negative TGF-beta receptor type II.
3277 12949259 Our data demonstrate that, in vivo, TGF-beta signaling in CD8+ T cells is critical for CD4+CD25+ Treg cell suppression of islet-reactive CD8+ T cells in type 1 diabetes.
3278 12949259 CD4+CD25+ T regulatory cells control anti-islet CD8+ T cells through TGF-beta-TGF-beta receptor interactions in type 1 diabetes.
3279 12949259 Pancreatic lymph node-derived CD4+CD25+ T regulatory (Treg) cells inhibit in situ differentiation of islet-reactive CD8+ T cells into cytotoxic T lymphocytes, thereby preventing diabetes progression.
3280 12949259 Here, we show by using a CD8+ T cell-mediated model of type 1 diabetes that transforming growth factor (TGF)-beta-TGF-beta receptor signals are critical for CD4+CD25+ Treg cell regulation of autoreactive islet-specific cytotoxic T lymphocytes.
3281 12949259 Transgenic expression of tumor necrosis factor alpha from birth to 25 days of age in the islets of B6 mice that constitutively express CD80 on their beta cells results in accumulation of CD4+CD25+TGF-beta+ cells exclusively in the islets and pancreatic lymph nodes, which delays diabetes progression.
3282 12949259 In contrast, expression of tumor necrosis factor alpha until 28 days of age prevents islet accumulation of CD4+CD25+TGF-beta+ Treg cells, resulting in acceleration to diabetes.
3283 12949259 Furthermore, adoptive transfer experiments demonstrated that CD4+CD25+ Treg cells could not control naïve or activated islet-reactive CD8+ T cells bearing a dominant negative TGF-beta receptor type II.
3284 12949259 Our data demonstrate that, in vivo, TGF-beta signaling in CD8+ T cells is critical for CD4+CD25+ Treg cell suppression of islet-reactive CD8+ T cells in type 1 diabetes.
3285 12949259 CD4+CD25+ T regulatory cells control anti-islet CD8+ T cells through TGF-beta-TGF-beta receptor interactions in type 1 diabetes.
3286 12949259 Pancreatic lymph node-derived CD4+CD25+ T regulatory (Treg) cells inhibit in situ differentiation of islet-reactive CD8+ T cells into cytotoxic T lymphocytes, thereby preventing diabetes progression.
3287 12949259 Here, we show by using a CD8+ T cell-mediated model of type 1 diabetes that transforming growth factor (TGF)-beta-TGF-beta receptor signals are critical for CD4+CD25+ Treg cell regulation of autoreactive islet-specific cytotoxic T lymphocytes.
3288 12949259 Transgenic expression of tumor necrosis factor alpha from birth to 25 days of age in the islets of B6 mice that constitutively express CD80 on their beta cells results in accumulation of CD4+CD25+TGF-beta+ cells exclusively in the islets and pancreatic lymph nodes, which delays diabetes progression.
3289 12949259 In contrast, expression of tumor necrosis factor alpha until 28 days of age prevents islet accumulation of CD4+CD25+TGF-beta+ Treg cells, resulting in acceleration to diabetes.
3290 12949259 Furthermore, adoptive transfer experiments demonstrated that CD4+CD25+ Treg cells could not control naïve or activated islet-reactive CD8+ T cells bearing a dominant negative TGF-beta receptor type II.
3291 12949259 Our data demonstrate that, in vivo, TGF-beta signaling in CD8+ T cells is critical for CD4+CD25+ Treg cell suppression of islet-reactive CD8+ T cells in type 1 diabetes.
3292 12949259 CD4+CD25+ T regulatory cells control anti-islet CD8+ T cells through TGF-beta-TGF-beta receptor interactions in type 1 diabetes.
3293 12949259 Pancreatic lymph node-derived CD4+CD25+ T regulatory (Treg) cells inhibit in situ differentiation of islet-reactive CD8+ T cells into cytotoxic T lymphocytes, thereby preventing diabetes progression.
3294 12949259 Here, we show by using a CD8+ T cell-mediated model of type 1 diabetes that transforming growth factor (TGF)-beta-TGF-beta receptor signals are critical for CD4+CD25+ Treg cell regulation of autoreactive islet-specific cytotoxic T lymphocytes.
3295 12949259 Transgenic expression of tumor necrosis factor alpha from birth to 25 days of age in the islets of B6 mice that constitutively express CD80 on their beta cells results in accumulation of CD4+CD25+TGF-beta+ cells exclusively in the islets and pancreatic lymph nodes, which delays diabetes progression.
3296 12949259 In contrast, expression of tumor necrosis factor alpha until 28 days of age prevents islet accumulation of CD4+CD25+TGF-beta+ Treg cells, resulting in acceleration to diabetes.
3297 12949259 Furthermore, adoptive transfer experiments demonstrated that CD4+CD25+ Treg cells could not control naïve or activated islet-reactive CD8+ T cells bearing a dominant negative TGF-beta receptor type II.
3298 12949259 Our data demonstrate that, in vivo, TGF-beta signaling in CD8+ T cells is critical for CD4+CD25+ Treg cell suppression of islet-reactive CD8+ T cells in type 1 diabetes.
3299 12949259 CD4+CD25+ T regulatory cells control anti-islet CD8+ T cells through TGF-beta-TGF-beta receptor interactions in type 1 diabetes.
3300 12949259 Pancreatic lymph node-derived CD4+CD25+ T regulatory (Treg) cells inhibit in situ differentiation of islet-reactive CD8+ T cells into cytotoxic T lymphocytes, thereby preventing diabetes progression.
3301 12949259 Here, we show by using a CD8+ T cell-mediated model of type 1 diabetes that transforming growth factor (TGF)-beta-TGF-beta receptor signals are critical for CD4+CD25+ Treg cell regulation of autoreactive islet-specific cytotoxic T lymphocytes.
3302 12949259 Transgenic expression of tumor necrosis factor alpha from birth to 25 days of age in the islets of B6 mice that constitutively express CD80 on their beta cells results in accumulation of CD4+CD25+TGF-beta+ cells exclusively in the islets and pancreatic lymph nodes, which delays diabetes progression.
3303 12949259 In contrast, expression of tumor necrosis factor alpha until 28 days of age prevents islet accumulation of CD4+CD25+TGF-beta+ Treg cells, resulting in acceleration to diabetes.
3304 12949259 Furthermore, adoptive transfer experiments demonstrated that CD4+CD25+ Treg cells could not control naïve or activated islet-reactive CD8+ T cells bearing a dominant negative TGF-beta receptor type II.
3305 12949259 Our data demonstrate that, in vivo, TGF-beta signaling in CD8+ T cells is critical for CD4+CD25+ Treg cell suppression of islet-reactive CD8+ T cells in type 1 diabetes.
3306 12949259 CD4+CD25+ T regulatory cells control anti-islet CD8+ T cells through TGF-beta-TGF-beta receptor interactions in type 1 diabetes.
3307 12949259 Pancreatic lymph node-derived CD4+CD25+ T regulatory (Treg) cells inhibit in situ differentiation of islet-reactive CD8+ T cells into cytotoxic T lymphocytes, thereby preventing diabetes progression.
3308 12949259 Here, we show by using a CD8+ T cell-mediated model of type 1 diabetes that transforming growth factor (TGF)-beta-TGF-beta receptor signals are critical for CD4+CD25+ Treg cell regulation of autoreactive islet-specific cytotoxic T lymphocytes.
3309 12949259 Transgenic expression of tumor necrosis factor alpha from birth to 25 days of age in the islets of B6 mice that constitutively express CD80 on their beta cells results in accumulation of CD4+CD25+TGF-beta+ cells exclusively in the islets and pancreatic lymph nodes, which delays diabetes progression.
3310 12949259 In contrast, expression of tumor necrosis factor alpha until 28 days of age prevents islet accumulation of CD4+CD25+TGF-beta+ Treg cells, resulting in acceleration to diabetes.
3311 12949259 Furthermore, adoptive transfer experiments demonstrated that CD4+CD25+ Treg cells could not control naïve or activated islet-reactive CD8+ T cells bearing a dominant negative TGF-beta receptor type II.
3312 12949259 Our data demonstrate that, in vivo, TGF-beta signaling in CD8+ T cells is critical for CD4+CD25+ Treg cell suppression of islet-reactive CD8+ T cells in type 1 diabetes.
3313 12949259 CD4+CD25+ T regulatory cells control anti-islet CD8+ T cells through TGF-beta-TGF-beta receptor interactions in type 1 diabetes.
3314 12949259 Pancreatic lymph node-derived CD4+CD25+ T regulatory (Treg) cells inhibit in situ differentiation of islet-reactive CD8+ T cells into cytotoxic T lymphocytes, thereby preventing diabetes progression.
3315 12949259 Here, we show by using a CD8+ T cell-mediated model of type 1 diabetes that transforming growth factor (TGF)-beta-TGF-beta receptor signals are critical for CD4+CD25+ Treg cell regulation of autoreactive islet-specific cytotoxic T lymphocytes.
3316 12949259 Transgenic expression of tumor necrosis factor alpha from birth to 25 days of age in the islets of B6 mice that constitutively express CD80 on their beta cells results in accumulation of CD4+CD25+TGF-beta+ cells exclusively in the islets and pancreatic lymph nodes, which delays diabetes progression.
3317 12949259 In contrast, expression of tumor necrosis factor alpha until 28 days of age prevents islet accumulation of CD4+CD25+TGF-beta+ Treg cells, resulting in acceleration to diabetes.
3318 12949259 Furthermore, adoptive transfer experiments demonstrated that CD4+CD25+ Treg cells could not control naïve or activated islet-reactive CD8+ T cells bearing a dominant negative TGF-beta receptor type II.
3319 12949259 Our data demonstrate that, in vivo, TGF-beta signaling in CD8+ T cells is critical for CD4+CD25+ Treg cell suppression of islet-reactive CD8+ T cells in type 1 diabetes.
3320 12974752 As expected, an added benefit was the much smaller oral antigen dose required to induce CD4+ insulin-B specific regulatory cells that bystander-suppress autoaggressive responses.
3321 14500627 Cutting edge: CD28 controls peripheral homeostasis of CD4+CD25+ regulatory T cells.
3322 14500627 CD28/B7 blockade leads to exacerbated autoimmune disease in the nonobese diabetic mouse strain as a result of a marked reduction in the number of CD4(+)CD25(+) regulatory T cells (Tregs).
3323 14500627 CD28 engagement promotes survival by regulating IL-2 production by conventional T cells and CD25 expression on Tregs.
3324 14500627 Cutting edge: CD28 controls peripheral homeostasis of CD4+CD25+ regulatory T cells.
3325 14500627 CD28/B7 blockade leads to exacerbated autoimmune disease in the nonobese diabetic mouse strain as a result of a marked reduction in the number of CD4(+)CD25(+) regulatory T cells (Tregs).
3326 14500627 CD28 engagement promotes survival by regulating IL-2 production by conventional T cells and CD25 expression on Tregs.
3327 14530324 CD4(+)CD25(-) T cells showed a higher proliferation and produced more IFN-gamma, but less IL-4 and IL-10, whereas CD4(+)CD25(+) T suppressor cells produced significantly lower levels of IL-10 in 16- compared with 8-wk-old NOD mice.
3328 14530324 An increased percentage of CD4(+)CD25(-) T cells expressing CD54 was present in 16-wk-old and in diabetic NOD, but not in BALB/c mice.
3329 14530324 Costimulation via CD54 increased the proliferation of CD4(+)CD25(-) T cells from 16-, but not 8-wk-old NOD mice, and blocking CD54 prevented their proliferation, consistent with the role of CD54 in diabetes development.
3330 14530324 CD4(+)CD25(-) T cells showed a higher proliferation and produced more IFN-gamma, but less IL-4 and IL-10, whereas CD4(+)CD25(+) T suppressor cells produced significantly lower levels of IL-10 in 16- compared with 8-wk-old NOD mice.
3331 14530324 An increased percentage of CD4(+)CD25(-) T cells expressing CD54 was present in 16-wk-old and in diabetic NOD, but not in BALB/c mice.
3332 14530324 Costimulation via CD54 increased the proliferation of CD4(+)CD25(-) T cells from 16-, but not 8-wk-old NOD mice, and blocking CD54 prevented their proliferation, consistent with the role of CD54 in diabetes development.
3333 14530324 CD4(+)CD25(-) T cells showed a higher proliferation and produced more IFN-gamma, but less IL-4 and IL-10, whereas CD4(+)CD25(+) T suppressor cells produced significantly lower levels of IL-10 in 16- compared with 8-wk-old NOD mice.
3334 14530324 An increased percentage of CD4(+)CD25(-) T cells expressing CD54 was present in 16-wk-old and in diabetic NOD, but not in BALB/c mice.
3335 14530324 Costimulation via CD54 increased the proliferation of CD4(+)CD25(-) T cells from 16-, but not 8-wk-old NOD mice, and blocking CD54 prevented their proliferation, consistent with the role of CD54 in diabetes development.
3336 14530340 Tetramer-positive cells were identified in the immature CD4(+)CD8(low) population that arises during positive selection, and in larger numbers in the more mature CD4(+)CD8(-) population.
3337 14530378 To directly test this hypothesis, we have generated a beta cell-specific knockout of the Fas gene in a transgenic model of type 1 autoimmune diabetes in which CD4+ T cells with a transgenic TCR specific for influenza hemagglutinin (HA) are causing diabetes in mice that express HA under control of the rat insulin promoter.
3338 14554080 However, while infiltrating T cells were found within the pancreas, depletion of the CD4 T cell population prior to secondary infection or use of CD8 knock-out mice had no effect on the development of virus-mediated hyperglycemia.
3339 14556005 We report here that the T(H) type 1 (T(H)1)-specific Tim-3 (T cell immunoglobulin domain, mucin domain) protein functions to inhibit aggressive T(H)1-mediated auto- and alloimmune responses.
3340 14556005 These effects were mediated, at least in part, by dampening of the antigen-specific immunosuppressive function of CD4(+)CD25(+) regulatory T cell populations.
3341 14561706 The CD1d-reactive tetramer-positive CD4+ T cells augmented anti-dsDNA Ab secretion about tenfold.
3342 14568923 Thymic-derived dysregulated tolerance has been suggested to occur in type 1 diabetes via impaired generation of CD4(+)CD25(+) T regulatory cells, leading to autoimmune beta cell destruction.
3343 14568923 In this study, we demonstrate that Notch3 expression is a characteristic feature of CD4(+)CD25(+) cells.
3344 14568923 The failure to develop the disease is associated with an increase of CD4(+)CD25(+) T regulatory cells, accumulating in lymphoid organs, in pancreas infiltrates and paralleled by increased expression of IL-4 and IL-10.
3345 14568923 Accordingly, CD4(+) T cells from Notch3-transgenic mice inhibit the development of hyperglycemia and insulitis when injected into streptozotocin-treated wild-type mice and display in vitro suppressive activity.
3346 14568923 Thymic-derived dysregulated tolerance has been suggested to occur in type 1 diabetes via impaired generation of CD4(+)CD25(+) T regulatory cells, leading to autoimmune beta cell destruction.
3347 14568923 In this study, we demonstrate that Notch3 expression is a characteristic feature of CD4(+)CD25(+) cells.
3348 14568923 The failure to develop the disease is associated with an increase of CD4(+)CD25(+) T regulatory cells, accumulating in lymphoid organs, in pancreas infiltrates and paralleled by increased expression of IL-4 and IL-10.
3349 14568923 Accordingly, CD4(+) T cells from Notch3-transgenic mice inhibit the development of hyperglycemia and insulitis when injected into streptozotocin-treated wild-type mice and display in vitro suppressive activity.
3350 14568923 Thymic-derived dysregulated tolerance has been suggested to occur in type 1 diabetes via impaired generation of CD4(+)CD25(+) T regulatory cells, leading to autoimmune beta cell destruction.
3351 14568923 In this study, we demonstrate that Notch3 expression is a characteristic feature of CD4(+)CD25(+) cells.
3352 14568923 The failure to develop the disease is associated with an increase of CD4(+)CD25(+) T regulatory cells, accumulating in lymphoid organs, in pancreas infiltrates and paralleled by increased expression of IL-4 and IL-10.
3353 14568923 Accordingly, CD4(+) T cells from Notch3-transgenic mice inhibit the development of hyperglycemia and insulitis when injected into streptozotocin-treated wild-type mice and display in vitro suppressive activity.
3354 14568923 Thymic-derived dysregulated tolerance has been suggested to occur in type 1 diabetes via impaired generation of CD4(+)CD25(+) T regulatory cells, leading to autoimmune beta cell destruction.
3355 14568923 In this study, we demonstrate that Notch3 expression is a characteristic feature of CD4(+)CD25(+) cells.
3356 14568923 The failure to develop the disease is associated with an increase of CD4(+)CD25(+) T regulatory cells, accumulating in lymphoid organs, in pancreas infiltrates and paralleled by increased expression of IL-4 and IL-10.
3357 14568923 Accordingly, CD4(+) T cells from Notch3-transgenic mice inhibit the development of hyperglycemia and insulitis when injected into streptozotocin-treated wild-type mice and display in vitro suppressive activity.
3358 14597769 Induction of FoxP3 and acquisition of T regulatory activity by stimulated human CD4+CD25- T cells.
3359 14597769 CD4+CD25+ regulatory T (TR) cells have been described in both humans and mice.
3360 14597769 Recently, the forkhead/winged helix transcription factor, FoxP3, has been shown to be important for the function of TR cells in mice.
3361 14597769 In this study, human TR cells were examined and, in results similar to those of studies done in mice, expression of FoxP3 was found exclusively in CD4+CD25+ T cells and correlated with the suppressive activity of these cells.
3362 14597769 In contrast to the mouse studies, activation of human CD4+CD25- T cells led to expression of FoxP3.
3363 14597769 Expression of FoxP3 in activated human CD4+CD25+ cells also correlated with suppression of proliferation by these cells in freshly isolated CD4+CD25- T cells from the same donor.
3364 14597769 Thus, in humans, during activation of CD4+CD25- T cells in an immune response, two populations of cells may arise, effector CD4+CD25+ and regulatory CD4+CD25+ T cells, with expression of FoxP3 correlated with regulatory activity.
3365 14597769 Induction of FoxP3 and acquisition of T regulatory activity by stimulated human CD4+CD25- T cells.
3366 14597769 CD4+CD25+ regulatory T (TR) cells have been described in both humans and mice.
3367 14597769 Recently, the forkhead/winged helix transcription factor, FoxP3, has been shown to be important for the function of TR cells in mice.
3368 14597769 In this study, human TR cells were examined and, in results similar to those of studies done in mice, expression of FoxP3 was found exclusively in CD4+CD25+ T cells and correlated with the suppressive activity of these cells.
3369 14597769 In contrast to the mouse studies, activation of human CD4+CD25- T cells led to expression of FoxP3.
3370 14597769 Expression of FoxP3 in activated human CD4+CD25+ cells also correlated with suppression of proliferation by these cells in freshly isolated CD4+CD25- T cells from the same donor.
3371 14597769 Thus, in humans, during activation of CD4+CD25- T cells in an immune response, two populations of cells may arise, effector CD4+CD25+ and regulatory CD4+CD25+ T cells, with expression of FoxP3 correlated with regulatory activity.
3372 14597769 Induction of FoxP3 and acquisition of T regulatory activity by stimulated human CD4+CD25- T cells.
3373 14597769 CD4+CD25+ regulatory T (TR) cells have been described in both humans and mice.
3374 14597769 Recently, the forkhead/winged helix transcription factor, FoxP3, has been shown to be important for the function of TR cells in mice.
3375 14597769 In this study, human TR cells were examined and, in results similar to those of studies done in mice, expression of FoxP3 was found exclusively in CD4+CD25+ T cells and correlated with the suppressive activity of these cells.
3376 14597769 In contrast to the mouse studies, activation of human CD4+CD25- T cells led to expression of FoxP3.
3377 14597769 Expression of FoxP3 in activated human CD4+CD25+ cells also correlated with suppression of proliferation by these cells in freshly isolated CD4+CD25- T cells from the same donor.
3378 14597769 Thus, in humans, during activation of CD4+CD25- T cells in an immune response, two populations of cells may arise, effector CD4+CD25+ and regulatory CD4+CD25+ T cells, with expression of FoxP3 correlated with regulatory activity.
3379 14597769 Induction of FoxP3 and acquisition of T regulatory activity by stimulated human CD4+CD25- T cells.
3380 14597769 CD4+CD25+ regulatory T (TR) cells have been described in both humans and mice.
3381 14597769 Recently, the forkhead/winged helix transcription factor, FoxP3, has been shown to be important for the function of TR cells in mice.
3382 14597769 In this study, human TR cells were examined and, in results similar to those of studies done in mice, expression of FoxP3 was found exclusively in CD4+CD25+ T cells and correlated with the suppressive activity of these cells.
3383 14597769 In contrast to the mouse studies, activation of human CD4+CD25- T cells led to expression of FoxP3.
3384 14597769 Expression of FoxP3 in activated human CD4+CD25+ cells also correlated with suppression of proliferation by these cells in freshly isolated CD4+CD25- T cells from the same donor.
3385 14597769 Thus, in humans, during activation of CD4+CD25- T cells in an immune response, two populations of cells may arise, effector CD4+CD25+ and regulatory CD4+CD25+ T cells, with expression of FoxP3 correlated with regulatory activity.
3386 14597769 Induction of FoxP3 and acquisition of T regulatory activity by stimulated human CD4+CD25- T cells.
3387 14597769 CD4+CD25+ regulatory T (TR) cells have been described in both humans and mice.
3388 14597769 Recently, the forkhead/winged helix transcription factor, FoxP3, has been shown to be important for the function of TR cells in mice.
3389 14597769 In this study, human TR cells were examined and, in results similar to those of studies done in mice, expression of FoxP3 was found exclusively in CD4+CD25+ T cells and correlated with the suppressive activity of these cells.
3390 14597769 In contrast to the mouse studies, activation of human CD4+CD25- T cells led to expression of FoxP3.
3391 14597769 Expression of FoxP3 in activated human CD4+CD25+ cells also correlated with suppression of proliferation by these cells in freshly isolated CD4+CD25- T cells from the same donor.
3392 14597769 Thus, in humans, during activation of CD4+CD25- T cells in an immune response, two populations of cells may arise, effector CD4+CD25+ and regulatory CD4+CD25+ T cells, with expression of FoxP3 correlated with regulatory activity.
3393 14597769 Induction of FoxP3 and acquisition of T regulatory activity by stimulated human CD4+CD25- T cells.
3394 14597769 CD4+CD25+ regulatory T (TR) cells have been described in both humans and mice.
3395 14597769 Recently, the forkhead/winged helix transcription factor, FoxP3, has been shown to be important for the function of TR cells in mice.
3396 14597769 In this study, human TR cells were examined and, in results similar to those of studies done in mice, expression of FoxP3 was found exclusively in CD4+CD25+ T cells and correlated with the suppressive activity of these cells.
3397 14597769 In contrast to the mouse studies, activation of human CD4+CD25- T cells led to expression of FoxP3.
3398 14597769 Expression of FoxP3 in activated human CD4+CD25+ cells also correlated with suppression of proliferation by these cells in freshly isolated CD4+CD25- T cells from the same donor.
3399 14597769 Thus, in humans, during activation of CD4+CD25- T cells in an immune response, two populations of cells may arise, effector CD4+CD25+ and regulatory CD4+CD25+ T cells, with expression of FoxP3 correlated with regulatory activity.
3400 14599847 CD4+CD25+ regulatory T cells generated in response to insulin B:9-23 peptide prevent adoptive transfer of diabetes by diabetogenic T cells.
3401 14599847 NOD mice have a relative deficiency of CD4+CD25+ regulatory T cells that could result in an inability to maintain peripheral tolerance.
3402 14599847 The aim of this study was to induce the generation of CD4+CD25+ regulatory T cells in response to autoantigens to prevent type 1 diabetes (T1D).
3403 14599847 We found that immunization of NOD mice with insulin B-chain peptide B:9-23 followed by 72 h in vitro culture with B:9-23 peptide induces generation of CD4+CD25+ regulatory T cells.
3404 14599847 Non-autoimmune mice BALB/c, C57BL/6 and NOR did not show up regulation of CD4+CD25+ regulatory T cells.
3405 14599847 These cells secreted large amounts of TGF-beta and TNF-alpha with little or no IFN-gamma and IL-10.
3406 14599847 Adoptive transfer of these CD4+CD25+ regulatory T cells into NOD-SCID mice completely prevented the adoptive transfer of disease by diabetogenic T cells.
3407 14599847 Although, non-self antigenic OVA (323-339) peptide immunization and in vitro culture with OVA (323-339) peptide does result in up regulation of CD4+CD25+ T cells, these cells did not prevent transfer of diabetes.
3408 14599847 Our study for the first time identified the generation of antigen-specific CD4+CD25+ regulatory T cells specifically in response to immunization with B:9-23 peptide in NOD mice that are capable of blocking adoptive transfer of diabetes.
3409 14599847 CD4+CD25+ regulatory T cells generated in response to insulin B:9-23 peptide prevent adoptive transfer of diabetes by diabetogenic T cells.
3410 14599847 NOD mice have a relative deficiency of CD4+CD25+ regulatory T cells that could result in an inability to maintain peripheral tolerance.
3411 14599847 The aim of this study was to induce the generation of CD4+CD25+ regulatory T cells in response to autoantigens to prevent type 1 diabetes (T1D).
3412 14599847 We found that immunization of NOD mice with insulin B-chain peptide B:9-23 followed by 72 h in vitro culture with B:9-23 peptide induces generation of CD4+CD25+ regulatory T cells.
3413 14599847 Non-autoimmune mice BALB/c, C57BL/6 and NOR did not show up regulation of CD4+CD25+ regulatory T cells.
3414 14599847 These cells secreted large amounts of TGF-beta and TNF-alpha with little or no IFN-gamma and IL-10.
3415 14599847 Adoptive transfer of these CD4+CD25+ regulatory T cells into NOD-SCID mice completely prevented the adoptive transfer of disease by diabetogenic T cells.
3416 14599847 Although, non-self antigenic OVA (323-339) peptide immunization and in vitro culture with OVA (323-339) peptide does result in up regulation of CD4+CD25+ T cells, these cells did not prevent transfer of diabetes.
3417 14599847 Our study for the first time identified the generation of antigen-specific CD4+CD25+ regulatory T cells specifically in response to immunization with B:9-23 peptide in NOD mice that are capable of blocking adoptive transfer of diabetes.
3418 14599847 CD4+CD25+ regulatory T cells generated in response to insulin B:9-23 peptide prevent adoptive transfer of diabetes by diabetogenic T cells.
3419 14599847 NOD mice have a relative deficiency of CD4+CD25+ regulatory T cells that could result in an inability to maintain peripheral tolerance.
3420 14599847 The aim of this study was to induce the generation of CD4+CD25+ regulatory T cells in response to autoantigens to prevent type 1 diabetes (T1D).
3421 14599847 We found that immunization of NOD mice with insulin B-chain peptide B:9-23 followed by 72 h in vitro culture with B:9-23 peptide induces generation of CD4+CD25+ regulatory T cells.
3422 14599847 Non-autoimmune mice BALB/c, C57BL/6 and NOR did not show up regulation of CD4+CD25+ regulatory T cells.
3423 14599847 These cells secreted large amounts of TGF-beta and TNF-alpha with little or no IFN-gamma and IL-10.
3424 14599847 Adoptive transfer of these CD4+CD25+ regulatory T cells into NOD-SCID mice completely prevented the adoptive transfer of disease by diabetogenic T cells.
3425 14599847 Although, non-self antigenic OVA (323-339) peptide immunization and in vitro culture with OVA (323-339) peptide does result in up regulation of CD4+CD25+ T cells, these cells did not prevent transfer of diabetes.
3426 14599847 Our study for the first time identified the generation of antigen-specific CD4+CD25+ regulatory T cells specifically in response to immunization with B:9-23 peptide in NOD mice that are capable of blocking adoptive transfer of diabetes.
3427 14599847 CD4+CD25+ regulatory T cells generated in response to insulin B:9-23 peptide prevent adoptive transfer of diabetes by diabetogenic T cells.
3428 14599847 NOD mice have a relative deficiency of CD4+CD25+ regulatory T cells that could result in an inability to maintain peripheral tolerance.
3429 14599847 The aim of this study was to induce the generation of CD4+CD25+ regulatory T cells in response to autoantigens to prevent type 1 diabetes (T1D).
3430 14599847 We found that immunization of NOD mice with insulin B-chain peptide B:9-23 followed by 72 h in vitro culture with B:9-23 peptide induces generation of CD4+CD25+ regulatory T cells.
3431 14599847 Non-autoimmune mice BALB/c, C57BL/6 and NOR did not show up regulation of CD4+CD25+ regulatory T cells.
3432 14599847 These cells secreted large amounts of TGF-beta and TNF-alpha with little or no IFN-gamma and IL-10.
3433 14599847 Adoptive transfer of these CD4+CD25+ regulatory T cells into NOD-SCID mice completely prevented the adoptive transfer of disease by diabetogenic T cells.
3434 14599847 Although, non-self antigenic OVA (323-339) peptide immunization and in vitro culture with OVA (323-339) peptide does result in up regulation of CD4+CD25+ T cells, these cells did not prevent transfer of diabetes.
3435 14599847 Our study for the first time identified the generation of antigen-specific CD4+CD25+ regulatory T cells specifically in response to immunization with B:9-23 peptide in NOD mice that are capable of blocking adoptive transfer of diabetes.
3436 14599847 CD4+CD25+ regulatory T cells generated in response to insulin B:9-23 peptide prevent adoptive transfer of diabetes by diabetogenic T cells.
3437 14599847 NOD mice have a relative deficiency of CD4+CD25+ regulatory T cells that could result in an inability to maintain peripheral tolerance.
3438 14599847 The aim of this study was to induce the generation of CD4+CD25+ regulatory T cells in response to autoantigens to prevent type 1 diabetes (T1D).
3439 14599847 We found that immunization of NOD mice with insulin B-chain peptide B:9-23 followed by 72 h in vitro culture with B:9-23 peptide induces generation of CD4+CD25+ regulatory T cells.
3440 14599847 Non-autoimmune mice BALB/c, C57BL/6 and NOR did not show up regulation of CD4+CD25+ regulatory T cells.
3441 14599847 These cells secreted large amounts of TGF-beta and TNF-alpha with little or no IFN-gamma and IL-10.
3442 14599847 Adoptive transfer of these CD4+CD25+ regulatory T cells into NOD-SCID mice completely prevented the adoptive transfer of disease by diabetogenic T cells.
3443 14599847 Although, non-self antigenic OVA (323-339) peptide immunization and in vitro culture with OVA (323-339) peptide does result in up regulation of CD4+CD25+ T cells, these cells did not prevent transfer of diabetes.
3444 14599847 Our study for the first time identified the generation of antigen-specific CD4+CD25+ regulatory T cells specifically in response to immunization with B:9-23 peptide in NOD mice that are capable of blocking adoptive transfer of diabetes.
3445 14599847 CD4+CD25+ regulatory T cells generated in response to insulin B:9-23 peptide prevent adoptive transfer of diabetes by diabetogenic T cells.
3446 14599847 NOD mice have a relative deficiency of CD4+CD25+ regulatory T cells that could result in an inability to maintain peripheral tolerance.
3447 14599847 The aim of this study was to induce the generation of CD4+CD25+ regulatory T cells in response to autoantigens to prevent type 1 diabetes (T1D).
3448 14599847 We found that immunization of NOD mice with insulin B-chain peptide B:9-23 followed by 72 h in vitro culture with B:9-23 peptide induces generation of CD4+CD25+ regulatory T cells.
3449 14599847 Non-autoimmune mice BALB/c, C57BL/6 and NOR did not show up regulation of CD4+CD25+ regulatory T cells.
3450 14599847 These cells secreted large amounts of TGF-beta and TNF-alpha with little or no IFN-gamma and IL-10.
3451 14599847 Adoptive transfer of these CD4+CD25+ regulatory T cells into NOD-SCID mice completely prevented the adoptive transfer of disease by diabetogenic T cells.
3452 14599847 Although, non-self antigenic OVA (323-339) peptide immunization and in vitro culture with OVA (323-339) peptide does result in up regulation of CD4+CD25+ T cells, these cells did not prevent transfer of diabetes.
3453 14599847 Our study for the first time identified the generation of antigen-specific CD4+CD25+ regulatory T cells specifically in response to immunization with B:9-23 peptide in NOD mice that are capable of blocking adoptive transfer of diabetes.
3454 14599847 CD4+CD25+ regulatory T cells generated in response to insulin B:9-23 peptide prevent adoptive transfer of diabetes by diabetogenic T cells.
3455 14599847 NOD mice have a relative deficiency of CD4+CD25+ regulatory T cells that could result in an inability to maintain peripheral tolerance.
3456 14599847 The aim of this study was to induce the generation of CD4+CD25+ regulatory T cells in response to autoantigens to prevent type 1 diabetes (T1D).
3457 14599847 We found that immunization of NOD mice with insulin B-chain peptide B:9-23 followed by 72 h in vitro culture with B:9-23 peptide induces generation of CD4+CD25+ regulatory T cells.
3458 14599847 Non-autoimmune mice BALB/c, C57BL/6 and NOR did not show up regulation of CD4+CD25+ regulatory T cells.
3459 14599847 These cells secreted large amounts of TGF-beta and TNF-alpha with little or no IFN-gamma and IL-10.
3460 14599847 Adoptive transfer of these CD4+CD25+ regulatory T cells into NOD-SCID mice completely prevented the adoptive transfer of disease by diabetogenic T cells.
3461 14599847 Although, non-self antigenic OVA (323-339) peptide immunization and in vitro culture with OVA (323-339) peptide does result in up regulation of CD4+CD25+ T cells, these cells did not prevent transfer of diabetes.
3462 14599847 Our study for the first time identified the generation of antigen-specific CD4+CD25+ regulatory T cells specifically in response to immunization with B:9-23 peptide in NOD mice that are capable of blocking adoptive transfer of diabetes.
3463 14599847 CD4+CD25+ regulatory T cells generated in response to insulin B:9-23 peptide prevent adoptive transfer of diabetes by diabetogenic T cells.
3464 14599847 NOD mice have a relative deficiency of CD4+CD25+ regulatory T cells that could result in an inability to maintain peripheral tolerance.
3465 14599847 The aim of this study was to induce the generation of CD4+CD25+ regulatory T cells in response to autoantigens to prevent type 1 diabetes (T1D).
3466 14599847 We found that immunization of NOD mice with insulin B-chain peptide B:9-23 followed by 72 h in vitro culture with B:9-23 peptide induces generation of CD4+CD25+ regulatory T cells.
3467 14599847 Non-autoimmune mice BALB/c, C57BL/6 and NOR did not show up regulation of CD4+CD25+ regulatory T cells.
3468 14599847 These cells secreted large amounts of TGF-beta and TNF-alpha with little or no IFN-gamma and IL-10.
3469 14599847 Adoptive transfer of these CD4+CD25+ regulatory T cells into NOD-SCID mice completely prevented the adoptive transfer of disease by diabetogenic T cells.
3470 14599847 Although, non-self antigenic OVA (323-339) peptide immunization and in vitro culture with OVA (323-339) peptide does result in up regulation of CD4+CD25+ T cells, these cells did not prevent transfer of diabetes.
3471 14599847 Our study for the first time identified the generation of antigen-specific CD4+CD25+ regulatory T cells specifically in response to immunization with B:9-23 peptide in NOD mice that are capable of blocking adoptive transfer of diabetes.
3472 14609212 The role of CD28 and CTLA4 in the function and homeostasis of CD4+CD25+ regulatory T cells.
3473 14609212 CD4+CD25+ T cells regulate a variety of autoimmune and alloimmune responses including the development of autoimmune diabetes in non-obese diabetic (NOD) mice.
3474 14609212 We have examined the role of CD28/CTLA4/B7 interactions in the expansion and survival of CD4+CD25+ regulatory T cells (T(reg)) in this setting.
3475 14609212 In addition, analysis of T(reg) from CTLA4-deficient mice suggests that CTLA4 expression is not required for their development or function.
3476 14609212 The role of CD28 and CTLA4 in the function and homeostasis of CD4+CD25+ regulatory T cells.
3477 14609212 CD4+CD25+ T cells regulate a variety of autoimmune and alloimmune responses including the development of autoimmune diabetes in non-obese diabetic (NOD) mice.
3478 14609212 We have examined the role of CD28/CTLA4/B7 interactions in the expansion and survival of CD4+CD25+ regulatory T cells (T(reg)) in this setting.
3479 14609212 In addition, analysis of T(reg) from CTLA4-deficient mice suggests that CTLA4 expression is not required for their development or function.
3480 14609212 The role of CD28 and CTLA4 in the function and homeostasis of CD4+CD25+ regulatory T cells.
3481 14609212 CD4+CD25+ T cells regulate a variety of autoimmune and alloimmune responses including the development of autoimmune diabetes in non-obese diabetic (NOD) mice.
3482 14609212 We have examined the role of CD28/CTLA4/B7 interactions in the expansion and survival of CD4+CD25+ regulatory T cells (T(reg)) in this setting.
3483 14609212 In addition, analysis of T(reg) from CTLA4-deficient mice suggests that CTLA4 expression is not required for their development or function.
3484 14609216 Naso-respirtory insulin (which avoids insulin degradation) induces CD8+ alpha(alpha) TCR gamma(delta) T(reg) whereas peptides that bind to the NOD MHC class II molecule, I-Ag7, insulin B9-23 and proinsulin B24-C36, induce CD4+ T(regs) Following naso-respiratory delivery of insulin to NOD mice increased numbers of CD8+ gamma(delta) T cells expressing interleukin (IL)10 are detected in the pancreatic lymph nodes.
3485 14609216 CD8+ gamma(delta) T(reg) are conceivably physiological and insulin-specific, induced by exposure to insulin in maternal milk.
3486 14609218 In several autoimmune models, feedback regulation employing both CD4+ and CD8+ T cells of TCR specificity can be shown to occur and to account for remission from the transient disease state, or for its prevention.
3487 14609218 In this model, the acetylated 1-9 N-terminal antigenic determinant from myelin basic protein (MBP) induces a transient paralytic disease owing to the activation of self-directed, high-affinity, CD4+ T cells.
3488 14609218 A CD4+ T cell directed against a TCR determinant in the framework region of the Vbeta chain, and a CD8+ T cell directed against an upstream, distinct framework determinant, both of which are necessary for regulation, bring about a reversal of the disease process.
3489 14609218 In several autoimmune models, feedback regulation employing both CD4+ and CD8+ T cells of TCR specificity can be shown to occur and to account for remission from the transient disease state, or for its prevention.
3490 14609218 In this model, the acetylated 1-9 N-terminal antigenic determinant from myelin basic protein (MBP) induces a transient paralytic disease owing to the activation of self-directed, high-affinity, CD4+ T cells.
3491 14609218 A CD4+ T cell directed against a TCR determinant in the framework region of the Vbeta chain, and a CD8+ T cell directed against an upstream, distinct framework determinant, both of which are necessary for regulation, bring about a reversal of the disease process.
3492 14609218 In several autoimmune models, feedback regulation employing both CD4+ and CD8+ T cells of TCR specificity can be shown to occur and to account for remission from the transient disease state, or for its prevention.
3493 14609218 In this model, the acetylated 1-9 N-terminal antigenic determinant from myelin basic protein (MBP) induces a transient paralytic disease owing to the activation of self-directed, high-affinity, CD4+ T cells.
3494 14609218 A CD4+ T cell directed against a TCR determinant in the framework region of the Vbeta chain, and a CD8+ T cell directed against an upstream, distinct framework determinant, both of which are necessary for regulation, bring about a reversal of the disease process.
3495 14609223 CD4+ lymphocytes with specificity for insulin can be induced by immunization with the insulin B chain via the oral route or by DNA vaccination.
3496 14609223 In comparison to non-regulatory insulin B-specific cell lines, they produce high amounts of interleukin (IL)4 and IL10, whereas interferon (IFN)gamma and tumour necrosis factor (TNF)alpha levels are comparable.
3497 14609223 We propose that this is achieved by modulation of antigen presenting cells that lose the ability to propagate aggressive responses after exposure to IL4 or IL10 in vitro.
3498 14609223 In order to avoid induction of insulin B-specific autoaggressive T cells we have demonstrated that administration of IL4 or IL10 at the time of immunization is beneficial and therefore should be part of a potential future clinical application.
3499 14609225 In the thymus these regulatory cells are CD25+-like CD4+ cells shown to control physiologic organ-specific autoimmunity.
3500 14609225 In contrast, in the periphery, both CD4+CD25+ and CD4+CD25- cells exhibit regulatory capacities.
3501 14609225 Additionally, onset of autoimmune diabetes was preceded by a functional abnormality of CD4+CD25+ regulatory T cells as assessed by their inability to suppress in vitro the proliferation of polyclonally activated CD25- T cells.
3502 14609225 Furthermore, we also obtained evidence in CD3-treated NOD for a significant increase (in the pancreatic and mesenteric lymph nodes but not in the spleen) in the proportion of CD4+CD25+CTLA4+ T cells which produce TGFbeta.
3503 14609225 In the thymus these regulatory cells are CD25+-like CD4+ cells shown to control physiologic organ-specific autoimmunity.
3504 14609225 In contrast, in the periphery, both CD4+CD25+ and CD4+CD25- cells exhibit regulatory capacities.
3505 14609225 Additionally, onset of autoimmune diabetes was preceded by a functional abnormality of CD4+CD25+ regulatory T cells as assessed by their inability to suppress in vitro the proliferation of polyclonally activated CD25- T cells.
3506 14609225 Furthermore, we also obtained evidence in CD3-treated NOD for a significant increase (in the pancreatic and mesenteric lymph nodes but not in the spleen) in the proportion of CD4+CD25+CTLA4+ T cells which produce TGFbeta.
3507 14609225 In the thymus these regulatory cells are CD25+-like CD4+ cells shown to control physiologic organ-specific autoimmunity.
3508 14609225 In contrast, in the periphery, both CD4+CD25+ and CD4+CD25- cells exhibit regulatory capacities.
3509 14609225 Additionally, onset of autoimmune diabetes was preceded by a functional abnormality of CD4+CD25+ regulatory T cells as assessed by their inability to suppress in vitro the proliferation of polyclonally activated CD25- T cells.
3510 14609225 Furthermore, we also obtained evidence in CD3-treated NOD for a significant increase (in the pancreatic and mesenteric lymph nodes but not in the spleen) in the proportion of CD4+CD25+CTLA4+ T cells which produce TGFbeta.
3511 14609225 In the thymus these regulatory cells are CD25+-like CD4+ cells shown to control physiologic organ-specific autoimmunity.
3512 14609225 In contrast, in the periphery, both CD4+CD25+ and CD4+CD25- cells exhibit regulatory capacities.
3513 14609225 Additionally, onset of autoimmune diabetes was preceded by a functional abnormality of CD4+CD25+ regulatory T cells as assessed by their inability to suppress in vitro the proliferation of polyclonally activated CD25- T cells.
3514 14609225 Furthermore, we also obtained evidence in CD3-treated NOD for a significant increase (in the pancreatic and mesenteric lymph nodes but not in the spleen) in the proportion of CD4+CD25+CTLA4+ T cells which produce TGFbeta.
3515 14610290 Our studies of the mechanism of the non-FcR binding anti-CD3 MAb indicate that the MAb delivers an activation signal to T cells resulting in disproportionate production of interleukin-10 (IL-10) relative to interferon-gamma(IFN-gamma) in vitro compared with FcR binding anti-CD3 MAb, and detectable levels of IL-10, IL-5, but rarely IFN-gamma or IL-2 in the serum after treatment.
3516 14610290 In addition, the drug induces a population of CD4+IL-10+ CCR4+ cells in vivo.
3517 14624755 Peripheral T cell lymphopenia (lyp) in the BioBreeding (BB) rat is linked to a frameshift mutation in Ian5, a member of the Immune Associated Nucleotide (Ian) gene family on rat chromosome 4.
3518 14624755 Analysis of thymic CD4 and CD8 T lymphocytes revealed no difference in the percentage of CD4(-)CD8(+)and CD4(+)CD8(-)subsets in lyp/lyp compared to +/+ F344 rats.
3519 14624755 Compared to F344 +/+ rats double positive CD4(+)CD8(+)T cells were increased only in lyp/lyp spleen (P=0.034) while double negative CD4(-)CD8(-)were increased in thymus (P=0.033), spleen (P=0.012), MLN (P<0.0001), and peripheral blood (P<0.0001).
3520 14624755 Peripheral T cell lymphopenia (lyp) in the BioBreeding (BB) rat is linked to a frameshift mutation in Ian5, a member of the Immune Associated Nucleotide (Ian) gene family on rat chromosome 4.
3521 14624755 Analysis of thymic CD4 and CD8 T lymphocytes revealed no difference in the percentage of CD4(-)CD8(+)and CD4(+)CD8(-)subsets in lyp/lyp compared to +/+ F344 rats.
3522 14624755 Compared to F344 +/+ rats double positive CD4(+)CD8(+)T cells were increased only in lyp/lyp spleen (P=0.034) while double negative CD4(-)CD8(-)were increased in thymus (P=0.033), spleen (P=0.012), MLN (P<0.0001), and peripheral blood (P<0.0001).
3523 14634082 We have shown recently that PPARgamma agonists inhibit EAE by blocking IL-12 production, IL-12 signaling, and neural Ag-induced Th1 differentiation.
3524 14634082 The exacerbation of EAE in PPARgamma(+/-) mice associates with an increased expansion of CD4(+) and CD8(+) T cells and expression of CD40 and MHC class II molecules in response to MOGp35-55 Ag.
3525 14634096 Systemic and pancreatic cytokine profiles deviated to a Th1-dominant state, and the the frequency of glutamic acid decarboxylase-reactive IFN-gamma-producing CD4(+) cells was also high in the IL-18 group.
3526 14634096 Moreover, it was suggested that the promoting effect of IL-18 might be associated with increased peripheral IL-12, CD86, and pancreatic IFN-inducible protein-10 mRNA expression levels.
3527 14645156 Autoantibodies and CD4 T cells target a beta cell retroviral envelope protein in non-obese diabetic mice.
3528 14659909 Using the CFSE assay we were able to measure directly the proliferation of human CD4(+) T cells from healthy donors in response to the type 1 diabetes autoantigens glutamic acid decarboxylase (GAD) and proinsulin (PI).
3529 14662897 To ascertain the role of CD8(+) T cell-induced beta cell lysis in the initiation of diabetes, we expressed a rat insulin promoter (RIP)-driven adenovirus E19 transgene in NOD mice.
3530 14662897 RIP-E19 expression inhibited MHC class I transport exclusively in beta cells and rendered these cells resistant to lysis by CD8(+) (but not CD4(+)) T cells, both in vitro and in vivo.
3531 14670304 CD40 ligation releases immature dendritic cells from the control of regulatory CD4+CD25+ T cells.
3532 14670304 We report that disruption of CD154 in nonobese diabetic (NOD) mice abrogates the helper function of CD4+CD25- T cells without impairing the regulatory activity of CD4+CD25+ T cells.
3533 14670304 Whereas CD4+ T cells from NOD mice enhanced a diabetogenic CD8+ T cell response in monoclonal TCR-transgenic NOD mice, CD4+ T cells from NOD.CD154(-/-) mice actively suppressed it.
3534 14670304 Suppression was mediated by regulatory CD4+CD25+ T cells capable of inhibiting CD8+ T cell responses induced by peptide-pulsed dendritic cells (DCs), but not peptide/MHC monomers.
3535 14670304 It involved inhibition of DC maturation, did not occur in the presence of CD154+ T-helper cells, and could be inhibited by activation of DCs with LPS, CpG DNA, or an agonistic anti-CD40 mAb.
3536 14670304 Thus, in at least some genetic backgrounds, CD154-CD40 interactions and innate stimuli release immature DCs from suppression by CD4+CD25+ T cells.
3537 14670304 CD40 ligation releases immature dendritic cells from the control of regulatory CD4+CD25+ T cells.
3538 14670304 We report that disruption of CD154 in nonobese diabetic (NOD) mice abrogates the helper function of CD4+CD25- T cells without impairing the regulatory activity of CD4+CD25+ T cells.
3539 14670304 Whereas CD4+ T cells from NOD mice enhanced a diabetogenic CD8+ T cell response in monoclonal TCR-transgenic NOD mice, CD4+ T cells from NOD.CD154(-/-) mice actively suppressed it.
3540 14670304 Suppression was mediated by regulatory CD4+CD25+ T cells capable of inhibiting CD8+ T cell responses induced by peptide-pulsed dendritic cells (DCs), but not peptide/MHC monomers.
3541 14670304 It involved inhibition of DC maturation, did not occur in the presence of CD154+ T-helper cells, and could be inhibited by activation of DCs with LPS, CpG DNA, or an agonistic anti-CD40 mAb.
3542 14670304 Thus, in at least some genetic backgrounds, CD154-CD40 interactions and innate stimuli release immature DCs from suppression by CD4+CD25+ T cells.
3543 14670304 CD40 ligation releases immature dendritic cells from the control of regulatory CD4+CD25+ T cells.
3544 14670304 We report that disruption of CD154 in nonobese diabetic (NOD) mice abrogates the helper function of CD4+CD25- T cells without impairing the regulatory activity of CD4+CD25+ T cells.
3545 14670304 Whereas CD4+ T cells from NOD mice enhanced a diabetogenic CD8+ T cell response in monoclonal TCR-transgenic NOD mice, CD4+ T cells from NOD.CD154(-/-) mice actively suppressed it.
3546 14670304 Suppression was mediated by regulatory CD4+CD25+ T cells capable of inhibiting CD8+ T cell responses induced by peptide-pulsed dendritic cells (DCs), but not peptide/MHC monomers.
3547 14670304 It involved inhibition of DC maturation, did not occur in the presence of CD154+ T-helper cells, and could be inhibited by activation of DCs with LPS, CpG DNA, or an agonistic anti-CD40 mAb.
3548 14670304 Thus, in at least some genetic backgrounds, CD154-CD40 interactions and innate stimuli release immature DCs from suppression by CD4+CD25+ T cells.
3549 14670304 CD40 ligation releases immature dendritic cells from the control of regulatory CD4+CD25+ T cells.
3550 14670304 We report that disruption of CD154 in nonobese diabetic (NOD) mice abrogates the helper function of CD4+CD25- T cells without impairing the regulatory activity of CD4+CD25+ T cells.
3551 14670304 Whereas CD4+ T cells from NOD mice enhanced a diabetogenic CD8+ T cell response in monoclonal TCR-transgenic NOD mice, CD4+ T cells from NOD.CD154(-/-) mice actively suppressed it.
3552 14670304 Suppression was mediated by regulatory CD4+CD25+ T cells capable of inhibiting CD8+ T cell responses induced by peptide-pulsed dendritic cells (DCs), but not peptide/MHC monomers.
3553 14670304 It involved inhibition of DC maturation, did not occur in the presence of CD154+ T-helper cells, and could be inhibited by activation of DCs with LPS, CpG DNA, or an agonistic anti-CD40 mAb.
3554 14670304 Thus, in at least some genetic backgrounds, CD154-CD40 interactions and innate stimuli release immature DCs from suppression by CD4+CD25+ T cells.
3555 14670304 CD40 ligation releases immature dendritic cells from the control of regulatory CD4+CD25+ T cells.
3556 14670304 We report that disruption of CD154 in nonobese diabetic (NOD) mice abrogates the helper function of CD4+CD25- T cells without impairing the regulatory activity of CD4+CD25+ T cells.
3557 14670304 Whereas CD4+ T cells from NOD mice enhanced a diabetogenic CD8+ T cell response in monoclonal TCR-transgenic NOD mice, CD4+ T cells from NOD.CD154(-/-) mice actively suppressed it.
3558 14670304 Suppression was mediated by regulatory CD4+CD25+ T cells capable of inhibiting CD8+ T cell responses induced by peptide-pulsed dendritic cells (DCs), but not peptide/MHC monomers.
3559 14670304 It involved inhibition of DC maturation, did not occur in the presence of CD154+ T-helper cells, and could be inhibited by activation of DCs with LPS, CpG DNA, or an agonistic anti-CD40 mAb.
3560 14670304 Thus, in at least some genetic backgrounds, CD154-CD40 interactions and innate stimuli release immature DCs from suppression by CD4+CD25+ T cells.
3561 14673094 It is not clear, however, whether a given subset, notably CD4+CD25+ regulatory T cells, protects from a wide spectrum of immune disorders, or whether specialized subsets of regulatory T cells control each given disease or group of diseases.
3562 14679038 Clearly, both CD4+ and CD8+ T cells are required, but activated CD4+ T cells are both necessary and sufficient in causing disease.
3563 14679038 It is still unclear whether the CD8+ T cell exerts its function as a classical effector cell or mainly as an immunomodulatory cell acting in synergy with the CD4+ T cell.
3564 14679038 The relative role of T cell effector mechanisms such as Fas/FasL, perforin/granzyme, and the TRAIL systems is unclear.
3565 14679038 Clearly, both CD4+ and CD8+ T cells are required, but activated CD4+ T cells are both necessary and sufficient in causing disease.
3566 14679038 It is still unclear whether the CD8+ T cell exerts its function as a classical effector cell or mainly as an immunomodulatory cell acting in synergy with the CD4+ T cell.
3567 14679038 The relative role of T cell effector mechanisms such as Fas/FasL, perforin/granzyme, and the TRAIL systems is unclear.
3568 14679042 Our approach takes advantage of the appearance of highly activated T cells expressing a CD25(+)/CD4(high+) phenotype induced by immobilized class II MHC monomer containing the GAD65 peptide.
3569 14679043 Nonobese diabetic (NOD) mice develop overt diabetes following prolonged periods of pancreatic islet inflammation involving both CD4+ and CD8+ T cells.
3570 14679043 We and others have shown that a significant fraction of NOD islet-associated CD8+ T cells express highly homologous TCRalpha chains (Valpha17 and Jalpha42 joined by the same N-region sequence) and that they recognize the peptide NRP-A7 in the context of the MHC class I molecule H-2K(d).
3571 14679052 Fas and Fas ligand immunoexpression in pancreatic islets of NOD mice during spontaneous and cyclophosphamide-accelerated diabetes.
3572 14679052 During insulin-dependent diabetes mellitus, beta cell destruction may involve activation of the Fas-Fas ligand (Fas-FasL) system.
3573 14679052 During spontaneous and cyclophosphamide diabetes, it was observed in a higher proportion of islet infiltrating macrophages than in CD4 and CD8 cells.
3574 14679052 In the cyclophosphamide group, Fas expression in intra-islet CD4 and CD8 cells showed an increase close to the onset of diabetes.
3575 14679052 At days 11 and 14, several intra-islet macrophages with immunolabeling for Fas also coexpressed interleukin-1beta and inducible nitric oxide synthase.
3576 14679052 Fas and Fas ligand immunoexpression in pancreatic islets of NOD mice during spontaneous and cyclophosphamide-accelerated diabetes.
3577 14679052 During insulin-dependent diabetes mellitus, beta cell destruction may involve activation of the Fas-Fas ligand (Fas-FasL) system.
3578 14679052 During spontaneous and cyclophosphamide diabetes, it was observed in a higher proportion of islet infiltrating macrophages than in CD4 and CD8 cells.
3579 14679052 In the cyclophosphamide group, Fas expression in intra-islet CD4 and CD8 cells showed an increase close to the onset of diabetes.
3580 14679052 At days 11 and 14, several intra-islet macrophages with immunolabeling for Fas also coexpressed interleukin-1beta and inducible nitric oxide synthase.
3581 14679058 From day 7, caspase-3 expression began to increase in intra-islet macrophages and reached a peak at days 11 and 14, when a small number of CD4 and CD8 T cells also showed positive labeling.
3582 14679076 Difference in gene expression profiles between human CD4+CD25+ and CD4+CD25- T cells.
3583 14679076 We studied the gene expression profiles of human CD4+CD25+ and CD4+CD25- T cells by using cDNA microarrays.
3584 14679076 Difference in gene expression profiles between human CD4+CD25+ and CD4+CD25- T cells.
3585 14679076 We studied the gene expression profiles of human CD4+CD25+ and CD4+CD25- T cells by using cDNA microarrays.
3586 14679092 We have previously shown that serum interferon-inducible protein-10 and glutamic acid decarboxylase-reactive CD4(+) interferon-gamma-producing cells in the peripheral blood are good markers for T cell-mediated autoimmunity in type 1 diabetes.
3587 14679096 Detection of GAD-reactive CD4+ cells in so-called "type 1B" diabetes.
3588 14681852 De novo emergence of growth factor receptors in activated human CD4+ and CD8+ T lymphocytes.
3589 14681852 Using phytohemagglutinin (PHA)-activated human T lymphocytes, we have demonstrated de novo emergence of growth factor receptors (insulin, insulin-like growth factor-1 [IGF-1], and interleukin-2 [IL-2]) in the CD4(+) and CD8(+) subsets determined by flow cytometry.
3590 14681852 These events, which are actinomycin- and cycloheximide-sensitive, occur only in activated, but not nonactivated, CD4(+) and CD8(+) lymphocytes.
3591 14681852 De novo emergence of growth factor receptors in activated human CD4+ and CD8+ T lymphocytes.
3592 14681852 Using phytohemagglutinin (PHA)-activated human T lymphocytes, we have demonstrated de novo emergence of growth factor receptors (insulin, insulin-like growth factor-1 [IGF-1], and interleukin-2 [IL-2]) in the CD4(+) and CD8(+) subsets determined by flow cytometry.
3593 14681852 These events, which are actinomycin- and cycloheximide-sensitive, occur only in activated, but not nonactivated, CD4(+) and CD8(+) lymphocytes.
3594 14681852 De novo emergence of growth factor receptors in activated human CD4+ and CD8+ T lymphocytes.
3595 14681852 Using phytohemagglutinin (PHA)-activated human T lymphocytes, we have demonstrated de novo emergence of growth factor receptors (insulin, insulin-like growth factor-1 [IGF-1], and interleukin-2 [IL-2]) in the CD4(+) and CD8(+) subsets determined by flow cytometry.
3596 14681852 These events, which are actinomycin- and cycloheximide-sensitive, occur only in activated, but not nonactivated, CD4(+) and CD8(+) lymphocytes.
3597 14692396 The IDDM and NIDDM patients had above-normal absolute lymphocyte counts, whereas the percentages of CD3, CD4 adn CD8 T lymphocytes were significantly reduced.
3598 14692396 The low intracellular reduced glutathione(GSH) and the unbalanced profile of key enzymes involved in GSH metabolism, gamma-glutamyltransferase (gamma-GT) and glutathione-S-transferase (GST), account for the increased oxidative status of PBMC from diabetic patients.
3599 14707058 MHC class II molecules play a role in the selection of autoreactive class I-restricted CD8 T cells that are essential contributors to type 1 diabetes development in nonobese diabetic mice.
3600 14707058 Development of autoreactive CD4 T cells contributing to type 1 diabetes (T1D) in both humans and nonobese diabetic (NOD) mice is either promoted or dominantly inhibited by particular MHC class II variants.
3601 14707058 In addition, it is now clear that when co-expressed with other susceptibility genes, some common MHC class I variants aberrantly mediate autoreactive CD8 T cell responses also essential to T1D development.
3602 14707058 However, it was unknown whether the development of diabetogenic CD8 T cells could also be dominantly inhibited by particular MHC variants.
3603 14707058 We addressed this issue by crossing NOD mice transgenically expressing the TCR from the diabetogenic CD8 T cell clone AI4 with NOD stocks congenic for MHC haplotypes that dominantly inhibit T1D.
3604 14707058 In contrast, heterozygous expression of some MHC haplotypes conferring T1D resistance anergized AI4 T cells through decreased TCR (H2(b)) or CD8 expression (H2(q)).
3605 14707073 Further analyses revealed that thymic deletion required both a hybrid MHC class II molecule, Ebeta(b) Ealpha(d), and the K(d) molecule presenting the HA epitope, which together synergize to effect deletion of CD4+CD8+ thymocytes.
3606 14724691 hIan5: the human ortholog to the rat Ian4/Iddm1/lyp is a new member of the Ian family that is overexpressed in B-cell lymphoid malignancies.
3607 14724691 Recently, the rat Ian4 (rIan4) was cloned and it appears to be identical to the gene Iddm1/lyp responsible for severe lymphopenia and the development of insulin-dependent diabetes in the BB-DP rat.
3608 14724691 Different blood fractions show high hIan5 expression in CD4- and CD8-positive T cells and monocytes, but not in B lymphocytes.
3609 14734611 CD4, CD8 T cells and B cells were present in islet infiltrates from 9-week-old L-selectin-sufficient and -deficient littermates.
3610 14734611 On the other hand, homing of activated, cloned insulin-specific autoaggressive CD8 T cells (TGNFC8 clone) is not affected in NOD/L-selectin-deficient recipients.
3611 14735361 We studied the histo- and immunopathology of the endocrine and exocrine pancreas and a number of other organs in a new insulin-dependent diabetes mellitus (IDDM) rat model (LEW.1AR1/Ztm- iddm rat).
3612 14735361 The islet infiltrate was composed mainly of ED1-positive macrophages and T lymphocytes, comprising a large number of CD8(+) lymphocytes and a few CD4(+) lymphocytes.
3613 14741738 The p38 mitogen-activated protein kinase (MAPK) pathway is important in Th1 immunity, macrophage activation, and apoptosis.
3614 14741738 Since they may be associated with beta-cell destruction during the development of type 1 diabetes, we investigated the role of the p38 MAPK pathway in female nonobese diabetic (NOD) mice.
3615 14741738 Phosphorylated p38 MAPK was observed immunohistochemically in CD4+ cells that had infiltrated into the islets and part of beta-cells, increasing in proportion to the severity of insulitis.
3616 14741738 Continuous oral administration of 0.08% FR167653, a specific p38 MAPK pathway inhibitor, significantly reduced the ex vivo production of interferon-gamma by splenic Th1 cells without affecting interleukin-4 production by Th2 cells.
3617 14741738 Treatment with FR167653 after insulitis had developed (i.e. from 10-30 weeks of age) also prevented diabetes, further suggesting that treatment with the p38 MAPK pathway inhibitor keeps insulitis benign in NOD mice, partly by inhibiting Th1 immunity.
3618 14741738 These findings suggest that p38 MAPK is a key mediator that switches insulitis from benign to destructive in the development of type 1 diabetes.
3619 14766222 We studied in vivo activation of CD4 and CD8 lymphocytes by measuring de novo growth factor receptor for insulin, IGF-1, and IL-2 in eight patients on admission and at resolution of DKA, and compared them with matched controls.
3620 14961992 The four insulin-independent patients showed prolonged CD4+ T-cell lymphocytopenia; inverted CD4:CD8 ratios; and increases in the percentage of CD4+CD25+ T cells.
3621 14980436 CD28 costimulation enhances the sensitivity of the ELISPOT assay for detection of antigen-specific memory effector CD4 and CD8 cell populations in human diseases.
3622 14980436 CD4 and CD8 IFN-gamma responses to viral (hepatitis C) and autoimmune antigens (islet cell) were tested in 10 hepatitis C and 8 type 1 diabetic as well as healthy control subjects.
3623 14980436 CD28 costimulation enhances the sensitivity of the ELISPOT assay for detection of antigen-specific memory effector CD4 and CD8 cell populations in human diseases.
3624 14980436 CD4 and CD8 IFN-gamma responses to viral (hepatitis C) and autoimmune antigens (islet cell) were tested in 10 hepatitis C and 8 type 1 diabetic as well as healthy control subjects.
3625 14980439 MHC tetramers have become essential tools for the analysis of antigen specific responses of CD8+ and CD4+ T cells.
3626 15024185 The expression of cytokine genes in the peritoneal macrophages and splenic CD4- and CD8-positive lymphocytes of the nonobese diabetic mice.
3627 15024185 In this study, we showed that the mRNA expression of the pro-inflammatory cytokines, TNF-alpha, IL-1 beta, IL-6, and GM-CSF, were increased while the anti-inflammatory cytokine, TGF-beta, decreased in the peritoneal macrophages of nonobese diabetic (NOD) mice.
3628 15024185 Surprisingly the expression of IFN-gamma and IL-2 by splenic CD4+ cells were lower in 5-week-old NOD mice as compared to the nonobese diabetic resistant (NOR) control mice, but their expression was higher in older NOD mice.
3629 15024185 The expression of IL-4 and IL-10 decreased in splenic CD4-positive lymphocytes.
3630 15024185 Splenic CD8-positive lymphocytes expressed increased levels of IFN-gamma and IL-10 but the latter decreased sharply when diabetes occurred.
3631 15024185 The expression of cytokine genes in the peritoneal macrophages and splenic CD4- and CD8-positive lymphocytes of the nonobese diabetic mice.
3632 15024185 In this study, we showed that the mRNA expression of the pro-inflammatory cytokines, TNF-alpha, IL-1 beta, IL-6, and GM-CSF, were increased while the anti-inflammatory cytokine, TGF-beta, decreased in the peritoneal macrophages of nonobese diabetic (NOD) mice.
3633 15024185 Surprisingly the expression of IFN-gamma and IL-2 by splenic CD4+ cells were lower in 5-week-old NOD mice as compared to the nonobese diabetic resistant (NOR) control mice, but their expression was higher in older NOD mice.
3634 15024185 The expression of IL-4 and IL-10 decreased in splenic CD4-positive lymphocytes.
3635 15024185 Splenic CD8-positive lymphocytes expressed increased levels of IFN-gamma and IL-10 but the latter decreased sharply when diabetes occurred.
3636 15024185 The expression of cytokine genes in the peritoneal macrophages and splenic CD4- and CD8-positive lymphocytes of the nonobese diabetic mice.
3637 15024185 In this study, we showed that the mRNA expression of the pro-inflammatory cytokines, TNF-alpha, IL-1 beta, IL-6, and GM-CSF, were increased while the anti-inflammatory cytokine, TGF-beta, decreased in the peritoneal macrophages of nonobese diabetic (NOD) mice.
3638 15024185 Surprisingly the expression of IFN-gamma and IL-2 by splenic CD4+ cells were lower in 5-week-old NOD mice as compared to the nonobese diabetic resistant (NOR) control mice, but their expression was higher in older NOD mice.
3639 15024185 The expression of IL-4 and IL-10 decreased in splenic CD4-positive lymphocytes.
3640 15024185 Splenic CD8-positive lymphocytes expressed increased levels of IFN-gamma and IL-10 but the latter decreased sharply when diabetes occurred.
3641 15030582 The coexpression of HLA and CD3, CD4, CD8, CD19 and CD14 molecules was evaluated by flow cytometry.
3642 15030582 Patients presented decreased percentage of double-positive CD4(+)/DQ(+) cells and increased percentage of CD19(+)/DR(+) cells, irrespective of the HLA class II profile; however, the more dramatic alteration of the lymphomononuclear phenotype profile was observed for patients possessing the HLA-DQB1*0201 allele.
3643 15030582 These patients exhibited decreased percentage of CD3(+), CD4(+), CD8(+), CD19(+) and CD14(+) cells bearing HLA-DQ molecules and decreased fluorescence intensity for HLA-DQ molecules on CD19(+) cells compared to patients without the DQB1*0201 allele.
3644 15030582 Although type 1 diabetes patients shared CD4/DQ or CD19/DR phenotype abnormalities, patients typed as DQB1*0201 presented additional abnormalities in terms of DQ expression and cell phenotypes bearing DQ molecules.
3645 15030582 The coexpression of HLA and CD3, CD4, CD8, CD19 and CD14 molecules was evaluated by flow cytometry.
3646 15030582 Patients presented decreased percentage of double-positive CD4(+)/DQ(+) cells and increased percentage of CD19(+)/DR(+) cells, irrespective of the HLA class II profile; however, the more dramatic alteration of the lymphomononuclear phenotype profile was observed for patients possessing the HLA-DQB1*0201 allele.
3647 15030582 These patients exhibited decreased percentage of CD3(+), CD4(+), CD8(+), CD19(+) and CD14(+) cells bearing HLA-DQ molecules and decreased fluorescence intensity for HLA-DQ molecules on CD19(+) cells compared to patients without the DQB1*0201 allele.
3648 15030582 Although type 1 diabetes patients shared CD4/DQ or CD19/DR phenotype abnormalities, patients typed as DQB1*0201 presented additional abnormalities in terms of DQ expression and cell phenotypes bearing DQ molecules.
3649 15030582 The coexpression of HLA and CD3, CD4, CD8, CD19 and CD14 molecules was evaluated by flow cytometry.
3650 15030582 Patients presented decreased percentage of double-positive CD4(+)/DQ(+) cells and increased percentage of CD19(+)/DR(+) cells, irrespective of the HLA class II profile; however, the more dramatic alteration of the lymphomononuclear phenotype profile was observed for patients possessing the HLA-DQB1*0201 allele.
3651 15030582 These patients exhibited decreased percentage of CD3(+), CD4(+), CD8(+), CD19(+) and CD14(+) cells bearing HLA-DQ molecules and decreased fluorescence intensity for HLA-DQ molecules on CD19(+) cells compared to patients without the DQB1*0201 allele.
3652 15030582 Although type 1 diabetes patients shared CD4/DQ or CD19/DR phenotype abnormalities, patients typed as DQB1*0201 presented additional abnormalities in terms of DQ expression and cell phenotypes bearing DQ molecules.
3653 15030582 The coexpression of HLA and CD3, CD4, CD8, CD19 and CD14 molecules was evaluated by flow cytometry.
3654 15030582 Patients presented decreased percentage of double-positive CD4(+)/DQ(+) cells and increased percentage of CD19(+)/DR(+) cells, irrespective of the HLA class II profile; however, the more dramatic alteration of the lymphomononuclear phenotype profile was observed for patients possessing the HLA-DQB1*0201 allele.
3655 15030582 These patients exhibited decreased percentage of CD3(+), CD4(+), CD8(+), CD19(+) and CD14(+) cells bearing HLA-DQ molecules and decreased fluorescence intensity for HLA-DQ molecules on CD19(+) cells compared to patients without the DQB1*0201 allele.
3656 15030582 Although type 1 diabetes patients shared CD4/DQ or CD19/DR phenotype abnormalities, patients typed as DQB1*0201 presented additional abnormalities in terms of DQ expression and cell phenotypes bearing DQ molecules.
3657 15034081 Using tetramer staining, TdT(-/-) and TdT(+/+) NOD mice showed similar frequencies of the diabetogenic BDC 2.5 CD4(+) T cells.
3658 15034081 We found no increase in CD4(+)CD25(+) regulatory T cells in NOD TdT(-/-) mice.
3659 15034081 Using tetramer staining, TdT(-/-) and TdT(+/+) NOD mice showed similar frequencies of the diabetogenic BDC 2.5 CD4(+) T cells.
3660 15034081 We found no increase in CD4(+)CD25(+) regulatory T cells in NOD TdT(-/-) mice.
3661 15035967 Autoreactive CD4(+) T helper cells and CD8(+) cytotoxic T lymphocytes (CTLs) recognize b-cell-derived peptides in the context of major histocompatibility complex class II and I molecules, respectively, in a process that terminates in b-cell death.
3662 15047612 The activation requirements of autoreactive CD4(+) T-cells were investigated in GAD65-specific HLA-DR0401-restricted clones derived from a diabetic patient using major histocompatibility complex (MHC) class II tetramers (TMrs) as stimulating agents.
3663 15047612 These signals ranged from the early steps of phospholipase C (PLC)-gamma(1) phosphorylation and Ca(2+) mobilization to more complex events, such as CD69 upregulation, cytokine mRNA transcription and secretion, and proliferation.
3664 15048713 Granulocyte-macrophage colony-stimulating factor (GM-CSF) is frequently used in preclinical and clinical protocols to modulate autoimmune responses, bone marrow transplants, and recovery from immune ablative therapies.
3665 15048713 In vivo transfer of CD8(+) and CD4(+) T cells demonstrate that autoreactive T cells undergo extensive division in pancreatic lymph nodes of GM-CSF-transgenic mice compared with wild-type NOD male mice.
3666 15070759 TGF-beta regulates in vivo expansion of Foxp3-expressing CD4+CD25+ regulatory T cells responsible for protection against diabetes.
3667 15070759 CD4+CD25+ regulatory T cells are essential in the protection from organ-specific autoimmune diseases.
3668 15070759 Here we show that a transient pulse of transforming growth factor beta (TGF-beta) in the islets during the priming phase of diabetes is sufficient to inhibit disease onset by promoting the expansion of intraislet CD4+CD25+ T cell pool.
3669 15070759 Approximately 40-50% of intraislet CD4+ T cells expressed the CD25 marker and exhibited characteristics of regulatory T cells including small size, high level of intracellular CTLA-4, expression of Foxp3, and transfer of protection against diabetes.
3670 15070759 Thus, these findings demonstrate a previously uncharacterized mechanism by which TGF-beta inhibits autoimmune diseases via regulation of the size of the CD4+CD25+ regulatory T cell pool in vivo.
3671 15070759 TGF-beta regulates in vivo expansion of Foxp3-expressing CD4+CD25+ regulatory T cells responsible for protection against diabetes.
3672 15070759 CD4+CD25+ regulatory T cells are essential in the protection from organ-specific autoimmune diseases.
3673 15070759 Here we show that a transient pulse of transforming growth factor beta (TGF-beta) in the islets during the priming phase of diabetes is sufficient to inhibit disease onset by promoting the expansion of intraislet CD4+CD25+ T cell pool.
3674 15070759 Approximately 40-50% of intraislet CD4+ T cells expressed the CD25 marker and exhibited characteristics of regulatory T cells including small size, high level of intracellular CTLA-4, expression of Foxp3, and transfer of protection against diabetes.
3675 15070759 Thus, these findings demonstrate a previously uncharacterized mechanism by which TGF-beta inhibits autoimmune diseases via regulation of the size of the CD4+CD25+ regulatory T cell pool in vivo.
3676 15070759 TGF-beta regulates in vivo expansion of Foxp3-expressing CD4+CD25+ regulatory T cells responsible for protection against diabetes.
3677 15070759 CD4+CD25+ regulatory T cells are essential in the protection from organ-specific autoimmune diseases.
3678 15070759 Here we show that a transient pulse of transforming growth factor beta (TGF-beta) in the islets during the priming phase of diabetes is sufficient to inhibit disease onset by promoting the expansion of intraislet CD4+CD25+ T cell pool.
3679 15070759 Approximately 40-50% of intraislet CD4+ T cells expressed the CD25 marker and exhibited characteristics of regulatory T cells including small size, high level of intracellular CTLA-4, expression of Foxp3, and transfer of protection against diabetes.
3680 15070759 Thus, these findings demonstrate a previously uncharacterized mechanism by which TGF-beta inhibits autoimmune diseases via regulation of the size of the CD4+CD25+ regulatory T cell pool in vivo.
3681 15070759 TGF-beta regulates in vivo expansion of Foxp3-expressing CD4+CD25+ regulatory T cells responsible for protection against diabetes.
3682 15070759 CD4+CD25+ regulatory T cells are essential in the protection from organ-specific autoimmune diseases.
3683 15070759 Here we show that a transient pulse of transforming growth factor beta (TGF-beta) in the islets during the priming phase of diabetes is sufficient to inhibit disease onset by promoting the expansion of intraislet CD4+CD25+ T cell pool.
3684 15070759 Approximately 40-50% of intraislet CD4+ T cells expressed the CD25 marker and exhibited characteristics of regulatory T cells including small size, high level of intracellular CTLA-4, expression of Foxp3, and transfer of protection against diabetes.
3685 15070759 Thus, these findings demonstrate a previously uncharacterized mechanism by which TGF-beta inhibits autoimmune diseases via regulation of the size of the CD4+CD25+ regulatory T cell pool in vivo.
3686 15070759 TGF-beta regulates in vivo expansion of Foxp3-expressing CD4+CD25+ regulatory T cells responsible for protection against diabetes.
3687 15070759 CD4+CD25+ regulatory T cells are essential in the protection from organ-specific autoimmune diseases.
3688 15070759 Here we show that a transient pulse of transforming growth factor beta (TGF-beta) in the islets during the priming phase of diabetes is sufficient to inhibit disease onset by promoting the expansion of intraislet CD4+CD25+ T cell pool.
3689 15070759 Approximately 40-50% of intraislet CD4+ T cells expressed the CD25 marker and exhibited characteristics of regulatory T cells including small size, high level of intracellular CTLA-4, expression of Foxp3, and transfer of protection against diabetes.
3690 15070759 Thus, these findings demonstrate a previously uncharacterized mechanism by which TGF-beta inhibits autoimmune diseases via regulation of the size of the CD4+CD25+ regulatory T cell pool in vivo.
3691 15096540 T-bet controls autoaggressive CD8 lymphocyte responses in type 1 diabetes.
3692 15096540 The T-box transcription factor T-bet is known to control lineage commitment and interferon-gamma production by T helper 1 (Th1) CD4 lymphocytes.
3693 15096540 We report here that T-bet is essential for development of CD8 lymphocyte-dependent autoimmune diabetes (type 1 diabetes [T1D]) in the rat insulin promoter-lymphocytic choriomeningitis virus (LCMV) transgenic model for virally induced T1D.
3694 15096540 In the absence of T-bet, autoaggressive (anti-LCMV) CD8 lymphocytes were reduced in number and produced less IFN-gamma, but increased IL-2 compared with controls.
3695 15096540 Further analysis showed that T-bet intrinsically controls the generation, but not apoptosis, maintenance, or secondary expansion of antiviral effector/memory CD8 lymphocytes.
3696 15100283 Injection of naive OVA-specific CD8 T cells into transgenic mice expressing OVA in the pancreas only resulted in islet destruction when activated CD4 Th cells were coinjected.
3697 15100283 This requirement for activated CD4 T cell help for induction of primary CD8 T cell-mediated immunity to tissue Ags contrasts recent reports suggesting that help is only important for CTL memory.
3698 15100283 Our findings show that signaling of CD40 on the dendritic cell presenting to CD8 T cells is important, but not sufficient, for induction of diabetes.
3699 15100283 Injection of naive OVA-specific CD8 T cells into transgenic mice expressing OVA in the pancreas only resulted in islet destruction when activated CD4 Th cells were coinjected.
3700 15100283 This requirement for activated CD4 T cell help for induction of primary CD8 T cell-mediated immunity to tissue Ags contrasts recent reports suggesting that help is only important for CTL memory.
3701 15100283 Our findings show that signaling of CD40 on the dendritic cell presenting to CD8 T cells is important, but not sufficient, for induction of diabetes.
3702 15114683 We previously demonstrated that peripheral CD4(lo)CD40(+) T cells give rise to pathogenic T cells in the non-obese diabetic (NOD) model.
3703 15114683 Here we show that peripheral CD4(+)CD40(+) T cells from diabetic or pre-diabetic NOD mice induce insulin-dependent diabetes mellitus.
3704 15114683 Consistent with breach of peripheral tolerance, CD4(lo)CD40(+) T cells expand with age in NOD mice but not in MHC-matched non-obese resistant (NOR) or BALB/c controls.
3705 15114683 Suggestive of a causal role for CD40 in autoimmunity, blocking CD40-CD154 interactions early during NOD development prevents autoaggressive T cell expansion while promoting increases in CD4(+)CD25(+) regulatory T cells.
3706 15114683 We previously demonstrated that peripheral CD4(lo)CD40(+) T cells give rise to pathogenic T cells in the non-obese diabetic (NOD) model.
3707 15114683 Here we show that peripheral CD4(+)CD40(+) T cells from diabetic or pre-diabetic NOD mice induce insulin-dependent diabetes mellitus.
3708 15114683 Consistent with breach of peripheral tolerance, CD4(lo)CD40(+) T cells expand with age in NOD mice but not in MHC-matched non-obese resistant (NOR) or BALB/c controls.
3709 15114683 Suggestive of a causal role for CD40 in autoimmunity, blocking CD40-CD154 interactions early during NOD development prevents autoaggressive T cell expansion while promoting increases in CD4(+)CD25(+) regulatory T cells.
3710 15114683 We previously demonstrated that peripheral CD4(lo)CD40(+) T cells give rise to pathogenic T cells in the non-obese diabetic (NOD) model.
3711 15114683 Here we show that peripheral CD4(+)CD40(+) T cells from diabetic or pre-diabetic NOD mice induce insulin-dependent diabetes mellitus.
3712 15114683 Consistent with breach of peripheral tolerance, CD4(lo)CD40(+) T cells expand with age in NOD mice but not in MHC-matched non-obese resistant (NOR) or BALB/c controls.
3713 15114683 Suggestive of a causal role for CD40 in autoimmunity, blocking CD40-CD154 interactions early during NOD development prevents autoaggressive T cell expansion while promoting increases in CD4(+)CD25(+) regulatory T cells.
3714 15114683 We previously demonstrated that peripheral CD4(lo)CD40(+) T cells give rise to pathogenic T cells in the non-obese diabetic (NOD) model.
3715 15114683 Here we show that peripheral CD4(+)CD40(+) T cells from diabetic or pre-diabetic NOD mice induce insulin-dependent diabetes mellitus.
3716 15114683 Consistent with breach of peripheral tolerance, CD4(lo)CD40(+) T cells expand with age in NOD mice but not in MHC-matched non-obese resistant (NOR) or BALB/c controls.
3717 15114683 Suggestive of a causal role for CD40 in autoimmunity, blocking CD40-CD154 interactions early during NOD development prevents autoaggressive T cell expansion while promoting increases in CD4(+)CD25(+) regulatory T cells.
3718 15117972 Defective suppressor function of human CD4+ CD25+ regulatory T cells in autoimmune polyglandular syndrome type II.
3719 15117972 However, in several murine models, depletion of CD4(+) CD25(+) regulatory T cells (T(regs)) causes a syndrome resembling human APS-II with multiple endocrinopathies.
3720 15117972 Defective suppressor function of human CD4+ CD25+ regulatory T cells in autoimmune polyglandular syndrome type II.
3721 15117972 However, in several murine models, depletion of CD4(+) CD25(+) regulatory T cells (T(regs)) causes a syndrome resembling human APS-II with multiple endocrinopathies.
3722 15127321 In this study we initially evaluated 43 patients with recent-onset Type 1 diabetes (disease duration <or= 6 months, 29 ICA positive) with regard to beta-cell secretion stimulation test with glucagon and immunologic parameters, including CD4 +, CD8 +, CD4 + CD25 +, CD8 + CD25 + lymphocyte subsets.
3723 15127321 The percentage of CD4 + cells was 42 +/- 9,4 % (healthy controls 44 +/- 7.3 %, p nonsig.) and percentage of CD8 + was 33 +/- 8.6 % (healthy control 31 +/- 8.3 %, p nonsig.).
3724 15127321 Relative size of CD4 + CD25 + subpopulation was 7 +/- 5.4 % (healthy control 2 +/- 2 %, p < 0.001).
3725 15127321 The change in the excursion of C-peptide between baseline and follow-up visit (C-peptide6min (6month-baseline)) showed mild, negative correlation with relative size of the CD8 + CD25 + subpopulation (r = - 0.511, p = 0.025), which may indicate that the size of this cell subpopulation has predictive value in assessing future functional beta-cell changes.
3726 15127321 In this study we initially evaluated 43 patients with recent-onset Type 1 diabetes (disease duration <or= 6 months, 29 ICA positive) with regard to beta-cell secretion stimulation test with glucagon and immunologic parameters, including CD4 +, CD8 +, CD4 + CD25 +, CD8 + CD25 + lymphocyte subsets.
3727 15127321 The percentage of CD4 + cells was 42 +/- 9,4 % (healthy controls 44 +/- 7.3 %, p nonsig.) and percentage of CD8 + was 33 +/- 8.6 % (healthy control 31 +/- 8.3 %, p nonsig.).
3728 15127321 Relative size of CD4 + CD25 + subpopulation was 7 +/- 5.4 % (healthy control 2 +/- 2 %, p < 0.001).
3729 15127321 The change in the excursion of C-peptide between baseline and follow-up visit (C-peptide6min (6month-baseline)) showed mild, negative correlation with relative size of the CD8 + CD25 + subpopulation (r = - 0.511, p = 0.025), which may indicate that the size of this cell subpopulation has predictive value in assessing future functional beta-cell changes.
3730 15127321 In this study we initially evaluated 43 patients with recent-onset Type 1 diabetes (disease duration <or= 6 months, 29 ICA positive) with regard to beta-cell secretion stimulation test with glucagon and immunologic parameters, including CD4 +, CD8 +, CD4 + CD25 +, CD8 + CD25 + lymphocyte subsets.
3731 15127321 The percentage of CD4 + cells was 42 +/- 9,4 % (healthy controls 44 +/- 7.3 %, p nonsig.) and percentage of CD8 + was 33 +/- 8.6 % (healthy control 31 +/- 8.3 %, p nonsig.).
3732 15127321 Relative size of CD4 + CD25 + subpopulation was 7 +/- 5.4 % (healthy control 2 +/- 2 %, p < 0.001).
3733 15127321 The change in the excursion of C-peptide between baseline and follow-up visit (C-peptide6min (6month-baseline)) showed mild, negative correlation with relative size of the CD8 + CD25 + subpopulation (r = - 0.511, p = 0.025), which may indicate that the size of this cell subpopulation has predictive value in assessing future functional beta-cell changes.
3734 15128778 The presence of autoreactive CD4(+) T cells in the peripheral blood of healthy human subjects was investigated after removal of CD4(+)CD25(+) regulatory T cells (Treg).
3735 15128778 CD4(+) T cells that were directed against the type 1 diabetes-associated autoantigen glutamic acid decarboxylase 65, the melanocyte differentiation Ag tyrosinase, and the cancer/testis tumor Ag NY-ESO-1 were readily derived from PBMC of healthy individuals.
3736 15128778 Addition of CD4(+)CD25(+) Treg back to the CD4(+)CD25(-) population suppressed the expansion of the autoreactive T cells.
3737 15128778 The presence of autoreactive CD4(+) T cells in the peripheral blood of healthy human subjects was investigated after removal of CD4(+)CD25(+) regulatory T cells (Treg).
3738 15128778 CD4(+) T cells that were directed against the type 1 diabetes-associated autoantigen glutamic acid decarboxylase 65, the melanocyte differentiation Ag tyrosinase, and the cancer/testis tumor Ag NY-ESO-1 were readily derived from PBMC of healthy individuals.
3739 15128778 Addition of CD4(+)CD25(+) Treg back to the CD4(+)CD25(-) population suppressed the expansion of the autoreactive T cells.
3740 15128778 The presence of autoreactive CD4(+) T cells in the peripheral blood of healthy human subjects was investigated after removal of CD4(+)CD25(+) regulatory T cells (Treg).
3741 15128778 CD4(+) T cells that were directed against the type 1 diabetes-associated autoantigen glutamic acid decarboxylase 65, the melanocyte differentiation Ag tyrosinase, and the cancer/testis tumor Ag NY-ESO-1 were readily derived from PBMC of healthy individuals.
3742 15128778 Addition of CD4(+)CD25(+) Treg back to the CD4(+)CD25(-) population suppressed the expansion of the autoreactive T cells.
3743 15133294 The results showed that the radon and thermal therapy enhanced the antioxidation functions, such as the activities of superoxide dismutase (SOD) and catalase, which inhibit lipid peroxidation and total cholesterol produced in the body.
3744 15133294 Moreover the therapy enhanced concanavalin A (ConA)-induced mitogen response and increased the percentage of CD4 positive cells, which is the marker of helper T cells, and decreased the percentage of CD8 positive cells, which is the common marker of killer T cells and suppressor T cells, in the white blood cell differentiation antigen (CD8/CD4) assay.
3745 15133294 Furthermore, the therapy increased the levels of alpha atrial natriuretic polypeptide (alpha ANP), beta endorphin, adrenocorticotropic hormone (ACTH), insulin and glucose-6-phosphate dehydrogenase (G-6-PDH), and it decreased the vasopression level.
3746 15147359 We measured oxidative markers, serum proinflammatory cytokines, soluble cytokine receptors and subsets of peripheral blood lymphocytes (by varying combinations of CD4, CD8, CD23 or low-affinity IgE receptor, and CD25 or IL-2 receptor) from 38 type I patients, 76 low-risk (i.e. without underlying islet autoimmunity) non-diabetic first-degree relatives of diabetic patients, and 95 healthy subjects.
3747 15147359 Relatives had decreased counts of monocytes, of cells co-expressing CD23 and CD25 and of CD25(+) cells in peripheral blood.
3748 15147359 Patients with TIDM had similar defects and, in addition, showed decreased counts of peripheral CD4(+)CD8(+) lymphocytes and increased serum levels of soluble receptors for interleukin (IL)-6 and IL-2.
3749 15147359 In the whole study group, we found a correlation (multiple R 0.5, P < 0.001) of CD23(+)CD25(+) cells with blood counts of monocytes, CD4(+)CD8(+) cells, CD25(+) cells, basal haemolysis and plasma levels of thiols.
3750 15147359 In type I diabetics, anti-GAD65 antibody levels were associated (multiple R 0.6, P = 0.01) positively with sIL-6R, negatively with duration of diabetes and CD23(+)CD25(+) counts; plasma creatinine correlated positively (multiple R 0.6, P < 0.001) with both sIL-2R and tumour necrosis factor (TNF)-alpha concentration.
3751 15147359 Our study reports the first evidence that the oxidative stress observed in type I families is related to immunological hallmarks (decreased peripheral numbers of monocytes as well as cells bearing a CD4(+)CD8(+), CD23(+)CD25(+) and CD25(+) phenotype) from which the involvement of some immunoregulatory mechanisms could be suspected.
3752 15147359 We measured oxidative markers, serum proinflammatory cytokines, soluble cytokine receptors and subsets of peripheral blood lymphocytes (by varying combinations of CD4, CD8, CD23 or low-affinity IgE receptor, and CD25 or IL-2 receptor) from 38 type I patients, 76 low-risk (i.e. without underlying islet autoimmunity) non-diabetic first-degree relatives of diabetic patients, and 95 healthy subjects.
3753 15147359 Relatives had decreased counts of monocytes, of cells co-expressing CD23 and CD25 and of CD25(+) cells in peripheral blood.
3754 15147359 Patients with TIDM had similar defects and, in addition, showed decreased counts of peripheral CD4(+)CD8(+) lymphocytes and increased serum levels of soluble receptors for interleukin (IL)-6 and IL-2.
3755 15147359 In the whole study group, we found a correlation (multiple R 0.5, P < 0.001) of CD23(+)CD25(+) cells with blood counts of monocytes, CD4(+)CD8(+) cells, CD25(+) cells, basal haemolysis and plasma levels of thiols.
3756 15147359 In type I diabetics, anti-GAD65 antibody levels were associated (multiple R 0.6, P = 0.01) positively with sIL-6R, negatively with duration of diabetes and CD23(+)CD25(+) counts; plasma creatinine correlated positively (multiple R 0.6, P < 0.001) with both sIL-2R and tumour necrosis factor (TNF)-alpha concentration.
3757 15147359 Our study reports the first evidence that the oxidative stress observed in type I families is related to immunological hallmarks (decreased peripheral numbers of monocytes as well as cells bearing a CD4(+)CD8(+), CD23(+)CD25(+) and CD25(+) phenotype) from which the involvement of some immunoregulatory mechanisms could be suspected.
3758 15147359 We measured oxidative markers, serum proinflammatory cytokines, soluble cytokine receptors and subsets of peripheral blood lymphocytes (by varying combinations of CD4, CD8, CD23 or low-affinity IgE receptor, and CD25 or IL-2 receptor) from 38 type I patients, 76 low-risk (i.e. without underlying islet autoimmunity) non-diabetic first-degree relatives of diabetic patients, and 95 healthy subjects.
3759 15147359 Relatives had decreased counts of monocytes, of cells co-expressing CD23 and CD25 and of CD25(+) cells in peripheral blood.
3760 15147359 Patients with TIDM had similar defects and, in addition, showed decreased counts of peripheral CD4(+)CD8(+) lymphocytes and increased serum levels of soluble receptors for interleukin (IL)-6 and IL-2.
3761 15147359 In the whole study group, we found a correlation (multiple R 0.5, P < 0.001) of CD23(+)CD25(+) cells with blood counts of monocytes, CD4(+)CD8(+) cells, CD25(+) cells, basal haemolysis and plasma levels of thiols.
3762 15147359 In type I diabetics, anti-GAD65 antibody levels were associated (multiple R 0.6, P = 0.01) positively with sIL-6R, negatively with duration of diabetes and CD23(+)CD25(+) counts; plasma creatinine correlated positively (multiple R 0.6, P < 0.001) with both sIL-2R and tumour necrosis factor (TNF)-alpha concentration.
3763 15147359 Our study reports the first evidence that the oxidative stress observed in type I families is related to immunological hallmarks (decreased peripheral numbers of monocytes as well as cells bearing a CD4(+)CD8(+), CD23(+)CD25(+) and CD25(+) phenotype) from which the involvement of some immunoregulatory mechanisms could be suspected.
3764 15147359 We measured oxidative markers, serum proinflammatory cytokines, soluble cytokine receptors and subsets of peripheral blood lymphocytes (by varying combinations of CD4, CD8, CD23 or low-affinity IgE receptor, and CD25 or IL-2 receptor) from 38 type I patients, 76 low-risk (i.e. without underlying islet autoimmunity) non-diabetic first-degree relatives of diabetic patients, and 95 healthy subjects.
3765 15147359 Relatives had decreased counts of monocytes, of cells co-expressing CD23 and CD25 and of CD25(+) cells in peripheral blood.
3766 15147359 Patients with TIDM had similar defects and, in addition, showed decreased counts of peripheral CD4(+)CD8(+) lymphocytes and increased serum levels of soluble receptors for interleukin (IL)-6 and IL-2.
3767 15147359 In the whole study group, we found a correlation (multiple R 0.5, P < 0.001) of CD23(+)CD25(+) cells with blood counts of monocytes, CD4(+)CD8(+) cells, CD25(+) cells, basal haemolysis and plasma levels of thiols.
3768 15147359 In type I diabetics, anti-GAD65 antibody levels were associated (multiple R 0.6, P = 0.01) positively with sIL-6R, negatively with duration of diabetes and CD23(+)CD25(+) counts; plasma creatinine correlated positively (multiple R 0.6, P < 0.001) with both sIL-2R and tumour necrosis factor (TNF)-alpha concentration.
3769 15147359 Our study reports the first evidence that the oxidative stress observed in type I families is related to immunological hallmarks (decreased peripheral numbers of monocytes as well as cells bearing a CD4(+)CD8(+), CD23(+)CD25(+) and CD25(+) phenotype) from which the involvement of some immunoregulatory mechanisms could be suspected.
3770 15184499 The low number of CD4+ CD25+ regulatory T cells (Tregs), their anergic phenotype, and diverse antigen specificity present major challenges to harnessing this potent tolerogenic population to treat autoimmunity and transplant rejection.
3771 15184499 Purified CD4+ CD25+ Tregs were expanded up to 200-fold in less than 2 wk in vitro using a combination of anti-CD3, anti-CD28, and interleukin 2.
3772 15184499 The low number of CD4+ CD25+ regulatory T cells (Tregs), their anergic phenotype, and diverse antigen specificity present major challenges to harnessing this potent tolerogenic population to treat autoimmunity and transplant rejection.
3773 15184499 Purified CD4+ CD25+ Tregs were expanded up to 200-fold in less than 2 wk in vitro using a combination of anti-CD3, anti-CD28, and interleukin 2.
3774 15184500 CD25+ CD4+ T cells, expanded with dendritic cells presenting a single autoantigenic peptide, suppress autoimmune diabetes.
3775 15184500 To silence autoimmunity, we used dendritic cells (DCs) from NOD mice to expand CD25+ CD4+ suppressor T cells from BDC2.5 mice, which are specific for a single islet autoantigen.
3776 15184500 The expanded T cells were more suppressive in vitro than their freshly isolated counterparts, indicating that DCs from autoimmune mice can increase the number and function of antigen-specific, CD25+ CD4+ regulatory T cells.
3777 15184500 Importantly, only 5,000 expanded CD25+ CD4+ BDC2.5 T cells could block autoimmunity caused by diabetogenic T cells in NOD mice, whereas 10(5) polyclonal, CD25+ CD4+ T cells from NOD mice were inactive.
3778 15184500 The expanded CD25+ CD4+ BDC2.5 T cells were effective even if administered 14 d after the diabetogenic T cells.
3779 15184500 Our data indicate that DCs can generate CD25+ CD4+ T cells that suppress autoimmune disease in vivo.
3780 15184500 This might be harnessed as a new avenue for immunotherapy, especially because CD25+ CD4+ regulatory cells responsive to a single autoantigen can inhibit diabetes mediated by reactivity to multiple antigens.
3781 15184500 CD25+ CD4+ T cells, expanded with dendritic cells presenting a single autoantigenic peptide, suppress autoimmune diabetes.
3782 15184500 To silence autoimmunity, we used dendritic cells (DCs) from NOD mice to expand CD25+ CD4+ suppressor T cells from BDC2.5 mice, which are specific for a single islet autoantigen.
3783 15184500 The expanded T cells were more suppressive in vitro than their freshly isolated counterparts, indicating that DCs from autoimmune mice can increase the number and function of antigen-specific, CD25+ CD4+ regulatory T cells.
3784 15184500 Importantly, only 5,000 expanded CD25+ CD4+ BDC2.5 T cells could block autoimmunity caused by diabetogenic T cells in NOD mice, whereas 10(5) polyclonal, CD25+ CD4+ T cells from NOD mice were inactive.
3785 15184500 The expanded CD25+ CD4+ BDC2.5 T cells were effective even if administered 14 d after the diabetogenic T cells.
3786 15184500 Our data indicate that DCs can generate CD25+ CD4+ T cells that suppress autoimmune disease in vivo.
3787 15184500 This might be harnessed as a new avenue for immunotherapy, especially because CD25+ CD4+ regulatory cells responsive to a single autoantigen can inhibit diabetes mediated by reactivity to multiple antigens.
3788 15184500 CD25+ CD4+ T cells, expanded with dendritic cells presenting a single autoantigenic peptide, suppress autoimmune diabetes.
3789 15184500 To silence autoimmunity, we used dendritic cells (DCs) from NOD mice to expand CD25+ CD4+ suppressor T cells from BDC2.5 mice, which are specific for a single islet autoantigen.
3790 15184500 The expanded T cells were more suppressive in vitro than their freshly isolated counterparts, indicating that DCs from autoimmune mice can increase the number and function of antigen-specific, CD25+ CD4+ regulatory T cells.
3791 15184500 Importantly, only 5,000 expanded CD25+ CD4+ BDC2.5 T cells could block autoimmunity caused by diabetogenic T cells in NOD mice, whereas 10(5) polyclonal, CD25+ CD4+ T cells from NOD mice were inactive.
3792 15184500 The expanded CD25+ CD4+ BDC2.5 T cells were effective even if administered 14 d after the diabetogenic T cells.
3793 15184500 Our data indicate that DCs can generate CD25+ CD4+ T cells that suppress autoimmune disease in vivo.
3794 15184500 This might be harnessed as a new avenue for immunotherapy, especially because CD25+ CD4+ regulatory cells responsive to a single autoantigen can inhibit diabetes mediated by reactivity to multiple antigens.
3795 15184500 CD25+ CD4+ T cells, expanded with dendritic cells presenting a single autoantigenic peptide, suppress autoimmune diabetes.
3796 15184500 To silence autoimmunity, we used dendritic cells (DCs) from NOD mice to expand CD25+ CD4+ suppressor T cells from BDC2.5 mice, which are specific for a single islet autoantigen.
3797 15184500 The expanded T cells were more suppressive in vitro than their freshly isolated counterparts, indicating that DCs from autoimmune mice can increase the number and function of antigen-specific, CD25+ CD4+ regulatory T cells.
3798 15184500 Importantly, only 5,000 expanded CD25+ CD4+ BDC2.5 T cells could block autoimmunity caused by diabetogenic T cells in NOD mice, whereas 10(5) polyclonal, CD25+ CD4+ T cells from NOD mice were inactive.
3799 15184500 The expanded CD25+ CD4+ BDC2.5 T cells were effective even if administered 14 d after the diabetogenic T cells.
3800 15184500 Our data indicate that DCs can generate CD25+ CD4+ T cells that suppress autoimmune disease in vivo.
3801 15184500 This might be harnessed as a new avenue for immunotherapy, especially because CD25+ CD4+ regulatory cells responsive to a single autoantigen can inhibit diabetes mediated by reactivity to multiple antigens.
3802 15184500 CD25+ CD4+ T cells, expanded with dendritic cells presenting a single autoantigenic peptide, suppress autoimmune diabetes.
3803 15184500 To silence autoimmunity, we used dendritic cells (DCs) from NOD mice to expand CD25+ CD4+ suppressor T cells from BDC2.5 mice, which are specific for a single islet autoantigen.
3804 15184500 The expanded T cells were more suppressive in vitro than their freshly isolated counterparts, indicating that DCs from autoimmune mice can increase the number and function of antigen-specific, CD25+ CD4+ regulatory T cells.
3805 15184500 Importantly, only 5,000 expanded CD25+ CD4+ BDC2.5 T cells could block autoimmunity caused by diabetogenic T cells in NOD mice, whereas 10(5) polyclonal, CD25+ CD4+ T cells from NOD mice were inactive.
3806 15184500 The expanded CD25+ CD4+ BDC2.5 T cells were effective even if administered 14 d after the diabetogenic T cells.
3807 15184500 Our data indicate that DCs can generate CD25+ CD4+ T cells that suppress autoimmune disease in vivo.
3808 15184500 This might be harnessed as a new avenue for immunotherapy, especially because CD25+ CD4+ regulatory cells responsive to a single autoantigen can inhibit diabetes mediated by reactivity to multiple antigens.
3809 15184500 CD25+ CD4+ T cells, expanded with dendritic cells presenting a single autoantigenic peptide, suppress autoimmune diabetes.
3810 15184500 To silence autoimmunity, we used dendritic cells (DCs) from NOD mice to expand CD25+ CD4+ suppressor T cells from BDC2.5 mice, which are specific for a single islet autoantigen.
3811 15184500 The expanded T cells were more suppressive in vitro than their freshly isolated counterparts, indicating that DCs from autoimmune mice can increase the number and function of antigen-specific, CD25+ CD4+ regulatory T cells.
3812 15184500 Importantly, only 5,000 expanded CD25+ CD4+ BDC2.5 T cells could block autoimmunity caused by diabetogenic T cells in NOD mice, whereas 10(5) polyclonal, CD25+ CD4+ T cells from NOD mice were inactive.
3813 15184500 The expanded CD25+ CD4+ BDC2.5 T cells were effective even if administered 14 d after the diabetogenic T cells.
3814 15184500 Our data indicate that DCs can generate CD25+ CD4+ T cells that suppress autoimmune disease in vivo.
3815 15184500 This might be harnessed as a new avenue for immunotherapy, especially because CD25+ CD4+ regulatory cells responsive to a single autoantigen can inhibit diabetes mediated by reactivity to multiple antigens.
3816 15184500 CD25+ CD4+ T cells, expanded with dendritic cells presenting a single autoantigenic peptide, suppress autoimmune diabetes.
3817 15184500 To silence autoimmunity, we used dendritic cells (DCs) from NOD mice to expand CD25+ CD4+ suppressor T cells from BDC2.5 mice, which are specific for a single islet autoantigen.
3818 15184500 The expanded T cells were more suppressive in vitro than their freshly isolated counterparts, indicating that DCs from autoimmune mice can increase the number and function of antigen-specific, CD25+ CD4+ regulatory T cells.
3819 15184500 Importantly, only 5,000 expanded CD25+ CD4+ BDC2.5 T cells could block autoimmunity caused by diabetogenic T cells in NOD mice, whereas 10(5) polyclonal, CD25+ CD4+ T cells from NOD mice were inactive.
3820 15184500 The expanded CD25+ CD4+ BDC2.5 T cells were effective even if administered 14 d after the diabetogenic T cells.
3821 15184500 Our data indicate that DCs can generate CD25+ CD4+ T cells that suppress autoimmune disease in vivo.
3822 15184500 This might be harnessed as a new avenue for immunotherapy, especially because CD25+ CD4+ regulatory cells responsive to a single autoantigen can inhibit diabetes mediated by reactivity to multiple antigens.
3823 15184501 CD4+CD25+ T regulatory cells dependent on ICOS promote regulation of effector cells in the prediabetic lesion.
3824 15184501 CD4+CD25+ T regulatory cells (Tregs) prevent autoimmune disease, yet little is known about precisely where they exert their influence naturally in a spontaneous autoimmune disorder.
3825 15184501 We find that BDC2.5 T cell receptor transgenic animals contain a small subset of FoxP3 positive CD4+CD25+CD69- cells in the pancreas, actively turning over, expressing the clonotypic receptor, and containing functional regulatory activity.
3826 15184501 Gene expression profiling confirms that the CD4+CD25+CD69- cells in pancreatic tissue express transcripts diagnostic of regulatory cells, but with significantly higher levels of interleukin 10 and inducible costimulator (ICOS) than their lymph node counterparts.
3827 15184501 Thus, CD4+CD25+69- Tregs operate directly in the autoimmune lesion and are dependent on ICOS to keep it in a nondestructive state.
3828 15184501 CD4+CD25+ T regulatory cells dependent on ICOS promote regulation of effector cells in the prediabetic lesion.
3829 15184501 CD4+CD25+ T regulatory cells (Tregs) prevent autoimmune disease, yet little is known about precisely where they exert their influence naturally in a spontaneous autoimmune disorder.
3830 15184501 We find that BDC2.5 T cell receptor transgenic animals contain a small subset of FoxP3 positive CD4+CD25+CD69- cells in the pancreas, actively turning over, expressing the clonotypic receptor, and containing functional regulatory activity.
3831 15184501 Gene expression profiling confirms that the CD4+CD25+CD69- cells in pancreatic tissue express transcripts diagnostic of regulatory cells, but with significantly higher levels of interleukin 10 and inducible costimulator (ICOS) than their lymph node counterparts.
3832 15184501 Thus, CD4+CD25+69- Tregs operate directly in the autoimmune lesion and are dependent on ICOS to keep it in a nondestructive state.
3833 15184501 CD4+CD25+ T regulatory cells dependent on ICOS promote regulation of effector cells in the prediabetic lesion.
3834 15184501 CD4+CD25+ T regulatory cells (Tregs) prevent autoimmune disease, yet little is known about precisely where they exert their influence naturally in a spontaneous autoimmune disorder.
3835 15184501 We find that BDC2.5 T cell receptor transgenic animals contain a small subset of FoxP3 positive CD4+CD25+CD69- cells in the pancreas, actively turning over, expressing the clonotypic receptor, and containing functional regulatory activity.
3836 15184501 Gene expression profiling confirms that the CD4+CD25+CD69- cells in pancreatic tissue express transcripts diagnostic of regulatory cells, but with significantly higher levels of interleukin 10 and inducible costimulator (ICOS) than their lymph node counterparts.
3837 15184501 Thus, CD4+CD25+69- Tregs operate directly in the autoimmune lesion and are dependent on ICOS to keep it in a nondestructive state.
3838 15184501 CD4+CD25+ T regulatory cells dependent on ICOS promote regulation of effector cells in the prediabetic lesion.
3839 15184501 CD4+CD25+ T regulatory cells (Tregs) prevent autoimmune disease, yet little is known about precisely where they exert their influence naturally in a spontaneous autoimmune disorder.
3840 15184501 We find that BDC2.5 T cell receptor transgenic animals contain a small subset of FoxP3 positive CD4+CD25+CD69- cells in the pancreas, actively turning over, expressing the clonotypic receptor, and containing functional regulatory activity.
3841 15184501 Gene expression profiling confirms that the CD4+CD25+CD69- cells in pancreatic tissue express transcripts diagnostic of regulatory cells, but with significantly higher levels of interleukin 10 and inducible costimulator (ICOS) than their lymph node counterparts.
3842 15184501 Thus, CD4+CD25+69- Tregs operate directly in the autoimmune lesion and are dependent on ICOS to keep it in a nondestructive state.
3843 15184501 CD4+CD25+ T regulatory cells dependent on ICOS promote regulation of effector cells in the prediabetic lesion.
3844 15184501 CD4+CD25+ T regulatory cells (Tregs) prevent autoimmune disease, yet little is known about precisely where they exert their influence naturally in a spontaneous autoimmune disorder.
3845 15184501 We find that BDC2.5 T cell receptor transgenic animals contain a small subset of FoxP3 positive CD4+CD25+CD69- cells in the pancreas, actively turning over, expressing the clonotypic receptor, and containing functional regulatory activity.
3846 15184501 Gene expression profiling confirms that the CD4+CD25+CD69- cells in pancreatic tissue express transcripts diagnostic of regulatory cells, but with significantly higher levels of interleukin 10 and inducible costimulator (ICOS) than their lymph node counterparts.
3847 15184501 Thus, CD4+CD25+69- Tregs operate directly in the autoimmune lesion and are dependent on ICOS to keep it in a nondestructive state.
3848 15192149 CD154 is a negative regulator of autoaggressive CD8+ T cells in type 1 diabetes.
3849 15192149 TNF/CD80 mice, a CD8(+) T cell-mediated model for type 1 diabetes, transgenically express tumor necrosis factor alpha (TNF-alpha) and the costimulatory molecule CD80 in their pancreatic islets.
3850 15192149 TNF/CD80 CD154-deficient mice rapidly develop diabetes, whereas CD154-sufficient mice do not.
3851 15192149 This finding correlates with the decreased numbers of CD4(+)CD25(+) T regulatory (T(R)) cells in the islets and pancreatic lymph nodes, in comparison to disease-protected CD154-sufficient mice.
3852 15192149 Adoptive transfer studies show that CD8(+) T cells from TNF/CD80 CD154-deficient, but not CD154-sufficient, mice are resistant to regulation in vivo.
3853 15192149 This study provides evidence that CD40-transduced signals initiate T(R) cell increase in vivo and that CD154-transduced signals sensitize autoaggressive CD8(+) T cells to suppression.
3854 15194776 After four immunizations over an 8-month period, all animals developed HCV-specific humoral and cellular immune responses including antibodies to HCV structural proteins and gamma interferon(+) (IFN-gamma(+))CD4(+) and IFN-gamma(+)CD8(+) T-cell responses.
3855 15214031 This resistance was associated with lower production of proinflammatory cytokines and a decreased expansion of PLP(139-151)-specific CD4(+) T cells after immunization and restimulation with PLP peptide in vitro.
3856 15220188 In addition, antidiabetic peroxisome proliferator-activated receptor gamma-activating thiazolidinediones inhibited C-peptide-induced CD4(+) cell chemotaxis as well as PI 3-Kgamma activation.
3857 15220219 Mutations of the forkhead/winged helix transcription factor FOXP3 gene on chromosome Xp11.23 cause a rare recessive monogenic disorder called IPEX (immune dysregulation, polyendocrinopathy, including type 1 diabetes, enteropathy, and X-linked syndrome).
3858 15220219 FOXP3 is necessary for the differentiation of a key immune suppressive subset of T-cells, the CD4+CD25+ regulatory T-cells.
3859 15229381 KRV causes autoimmune type 1 diabetes in diabetes resistant-BioBreeding rats by breakdown of immune balance, including the preferential activation of effector T cells, such as Th1-like CD45RC+CD4+ T cells and CD8+ T cells, and down-regulation of Th2-like CD45RC-CD4+ and CD4+CD25+ T cells, rather than by direct infection of pancreatic beta cells.
3860 15238071 As compared with normal animals, NOD thymocytes (including the CD4+CD25+ regulatory T cells) exhibit a decrease in the membrane expression of alpha5beta1, resulting in a functional impairment of fibronectin-mediated interactions, including cell migration.
3861 15239090 The total CD4(+) and CD8(+) cell response was analyzed with 600 overlapping HCV peptides and 6 proteins by ex vivo enzyme-linked immunospot (ELISpot), intracellular cytokine staining, and proliferation assays.
3862 15240736 RAGE expression was detected on CD4(+), CD8(+), and B cells from diabetic mice and transferred to NOD/scid recipients.
3863 15240736 RAGE blockade was associated with increased expression of IL-10 and TGF-beta in the islets from protected mice.
3864 15270841 However, DNA vaccination encoding microbial or reporter antigens is known to induce specific long-lasting CD4 Th1 and strong cytolytic CD8 T cell responses.
3865 15270841 Simultaneously, DNA immunization induced GAD-specific CD4 T cells secreting interleukin (IL)-4 (P < 0.05) and transforming growth factor (TGF)-beta (P = 0.03).
3866 15270841 Furthermore, vaccination produced high amounts of Th2 cytokine-related IgG1 (P < 3.10(-3)) and TGF-beta-related IgG2b to GAD (P = 0.015).
3867 15270841 Surprisingly, diabetes onset was correlated positively with Th2-related GAD-specific IgG1 (P < 10(-4)) and TGF-beta-related IgG2b (P < 3.10(-3)).
3868 15270841 However, DNA vaccination encoding microbial or reporter antigens is known to induce specific long-lasting CD4 Th1 and strong cytolytic CD8 T cell responses.
3869 15270841 Simultaneously, DNA immunization induced GAD-specific CD4 T cells secreting interleukin (IL)-4 (P < 0.05) and transforming growth factor (TGF)-beta (P = 0.03).
3870 15270841 Furthermore, vaccination produced high amounts of Th2 cytokine-related IgG1 (P < 3.10(-3)) and TGF-beta-related IgG2b to GAD (P = 0.015).
3871 15270841 Surprisingly, diabetes onset was correlated positively with Th2-related GAD-specific IgG1 (P < 10(-4)) and TGF-beta-related IgG2b (P < 3.10(-3)).
3872 15270855 We performed flow cytometry for lymphocyte subtypes and for activation markers (HLA-DR, CD25, and CD69 or CD71).
3873 15270855 The ratios of both T to B cells and CD4+ to CD8+ cells were elevated at birth, but CD4+ cells were not activated.
3874 15277377 GAD65-specific CD4+ T-cells with high antigen avidity are prevalent in peripheral blood of patients with type 1 diabetes.
3875 15277378 Strikingly, treatment of NOD mice with Flt3-ligand significantly decreased insulitis and progression to diabetes and was associated with a significant increase in myeloid dendritic cells and in vivo induction of CD4+/CD25+ cells in the pancreatic lymph node.
3876 15294969 CD8(+) T cells are essential for the destruction of the insulin-producing pancreatic beta cells characterizing this disease.
3877 15294969 AI4 is a pathogenic CD8(+) T cell clone, isolated from the islets of a 5-wk-old female NOD mouse, which is capable of mediating overt diabetes in the absence of CD4(+) T cell help.
3878 15296648 Intracellular IFN-gamma production and IL-12 serum levels in latent autoimmune diabetes of adults (LADA) and in type 2 diabetes.
3879 15296648 Th1 cytokines, such as interleukin-2 (IL-2) and interferon-gamma (IFN-gamma), and Th1-inducing cytokines, such as IL-12, are involved in the pathogenesis of various organ-specific autoimmune diseases, including autoimmune diabetes.
3880 15296648 In this study, we investigated intracellular IFN-gamma release by T lymphocytes and IL-12 serum levels in 48 type 2 and 36 latent autoimmune diabetes of adults (LADA) diabetics and 25 control subjects in an attempt to evaluate their role in the pathogenesis of these clinical entities.
3881 15296648 In all study groups, IFN-gamma content of CD4(+) and CD8(+) lymphocytes was significantly upregulated by stimulation.
3882 15296648 Furthermore, it was observed that CD4(+) and CD8(+) lymphocytes from type 2 diabetics produced significantly lower levels of IFN-gamma compared with LADA patients and controls.
3883 15296648 However, the percentages of CD4(+)/IFN-gamma(+) and CD8(+)/IFN-gamma(+) cells from type 2 diabetics were significantly higher compared with controls.
3884 15296648 In contrast, the low IFN-gamma levels observed in type 2 diabetics in combination with the low IL-12 serum levels might be a contributing factor in the frequently observed chronic complications in these patients.
3885 15296648 Intracellular IFN-gamma production and IL-12 serum levels in latent autoimmune diabetes of adults (LADA) and in type 2 diabetes.
3886 15296648 Th1 cytokines, such as interleukin-2 (IL-2) and interferon-gamma (IFN-gamma), and Th1-inducing cytokines, such as IL-12, are involved in the pathogenesis of various organ-specific autoimmune diseases, including autoimmune diabetes.
3887 15296648 In this study, we investigated intracellular IFN-gamma release by T lymphocytes and IL-12 serum levels in 48 type 2 and 36 latent autoimmune diabetes of adults (LADA) diabetics and 25 control subjects in an attempt to evaluate their role in the pathogenesis of these clinical entities.
3888 15296648 In all study groups, IFN-gamma content of CD4(+) and CD8(+) lymphocytes was significantly upregulated by stimulation.
3889 15296648 Furthermore, it was observed that CD4(+) and CD8(+) lymphocytes from type 2 diabetics produced significantly lower levels of IFN-gamma compared with LADA patients and controls.
3890 15296648 However, the percentages of CD4(+)/IFN-gamma(+) and CD8(+)/IFN-gamma(+) cells from type 2 diabetics were significantly higher compared with controls.
3891 15296648 In contrast, the low IFN-gamma levels observed in type 2 diabetics in combination with the low IL-12 serum levels might be a contributing factor in the frequently observed chronic complications in these patients.
3892 15296648 Intracellular IFN-gamma production and IL-12 serum levels in latent autoimmune diabetes of adults (LADA) and in type 2 diabetes.
3893 15296648 Th1 cytokines, such as interleukin-2 (IL-2) and interferon-gamma (IFN-gamma), and Th1-inducing cytokines, such as IL-12, are involved in the pathogenesis of various organ-specific autoimmune diseases, including autoimmune diabetes.
3894 15296648 In this study, we investigated intracellular IFN-gamma release by T lymphocytes and IL-12 serum levels in 48 type 2 and 36 latent autoimmune diabetes of adults (LADA) diabetics and 25 control subjects in an attempt to evaluate their role in the pathogenesis of these clinical entities.
3895 15296648 In all study groups, IFN-gamma content of CD4(+) and CD8(+) lymphocytes was significantly upregulated by stimulation.
3896 15296648 Furthermore, it was observed that CD4(+) and CD8(+) lymphocytes from type 2 diabetics produced significantly lower levels of IFN-gamma compared with LADA patients and controls.
3897 15296648 However, the percentages of CD4(+)/IFN-gamma(+) and CD8(+)/IFN-gamma(+) cells from type 2 diabetics were significantly higher compared with controls.
3898 15296648 In contrast, the low IFN-gamma levels observed in type 2 diabetics in combination with the low IL-12 serum levels might be a contributing factor in the frequently observed chronic complications in these patients.
3899 15302166 Compared to controls, patients presented increased fluorescence intensity of HLA class I molecules on CD3+, CD4+ and CD8+ cells.
3900 15313430 These teratogenic effects were accompanied by a decreased percentage of cells expressing Mac-1, Thy-1.2, CD4 or CD8 in the spleen and inguinal as well as paraaortic lymph nodes, except for Mac-1 expression by splenocytes, which increased significantly in the beginning of pregnancy and decreased later.
3901 15322272 Therapeutic vaccination using CD4+CD25+ antigen-specific regulatory T cells.
3902 15322272 In this review, we summarize current efforts to induce and maintain tolerance in the autoimmune diabetes setting by using therapeutic vaccination with CD4(+)CD25(+) regulatory T cells.
3903 15322272 Therapeutic vaccination using CD4+CD25+ antigen-specific regulatory T cells.
3904 15322272 In this review, we summarize current efforts to induce and maintain tolerance in the autoimmune diabetes setting by using therapeutic vaccination with CD4(+)CD25(+) regulatory T cells.
3905 15324933 This was followed by an imbalance between CD4(+)CD25(+) and CD4(+)CD69(+) T cells in the pancreas that was mirrored in the phenotype of autoreactive T cells in the blood.
3906 15324933 Waves of activated CD4(+)CD69(+) T cells in blood preceded the disease onset suggesting that the autoimmune attack on pancreas is a discontinuous "hit-and-run" rather than a continuous process.
3907 15324933 This was followed by an imbalance between CD4(+)CD25(+) and CD4(+)CD69(+) T cells in the pancreas that was mirrored in the phenotype of autoreactive T cells in the blood.
3908 15324933 Waves of activated CD4(+)CD69(+) T cells in blood preceded the disease onset suggesting that the autoimmune attack on pancreas is a discontinuous "hit-and-run" rather than a continuous process.
3909 15340148 Unique role of CD4+CD62L+ regulatory T cells in the control of autoimmune diabetes in T cell receptor transgenic mice.
3910 15340148 We first show that diabetes onset is prevented in such mice by infusion of polyclonal CD4(+) T cells expressing L-selectin (CD62L) but not prevented or only marginally prevented by CD4(+)CD25(+) T cells.
3911 15340148 Similarly, we found with a cotransfer model that CD4(+)CD62L(+) T cells but not CD4(+)CD25(+) T cells inhibited diabetes transfer into NOD SCID recipients by transgenic NOD BDC2.5 SCID cells.
3912 15340148 Data are presented arguing for the role of CD4(+)CD62L(+) T cells present within the polyclonal diabetogenic population in mediating this apparently paradoxical effect.
3913 15340148 Collectively, these data confirm the central role of CD4(+)CD62L(+) regulatory T cells in controlling disease onset in a well defined transgenic model of autoimmune diabetes and suggest the intervention of homeostatic mechanisms as part of their mode of action.
3914 15340148 Unique role of CD4+CD62L+ regulatory T cells in the control of autoimmune diabetes in T cell receptor transgenic mice.
3915 15340148 We first show that diabetes onset is prevented in such mice by infusion of polyclonal CD4(+) T cells expressing L-selectin (CD62L) but not prevented or only marginally prevented by CD4(+)CD25(+) T cells.
3916 15340148 Similarly, we found with a cotransfer model that CD4(+)CD62L(+) T cells but not CD4(+)CD25(+) T cells inhibited diabetes transfer into NOD SCID recipients by transgenic NOD BDC2.5 SCID cells.
3917 15340148 Data are presented arguing for the role of CD4(+)CD62L(+) T cells present within the polyclonal diabetogenic population in mediating this apparently paradoxical effect.
3918 15340148 Collectively, these data confirm the central role of CD4(+)CD62L(+) regulatory T cells in controlling disease onset in a well defined transgenic model of autoimmune diabetes and suggest the intervention of homeostatic mechanisms as part of their mode of action.
3919 15340148 Unique role of CD4+CD62L+ regulatory T cells in the control of autoimmune diabetes in T cell receptor transgenic mice.
3920 15340148 We first show that diabetes onset is prevented in such mice by infusion of polyclonal CD4(+) T cells expressing L-selectin (CD62L) but not prevented or only marginally prevented by CD4(+)CD25(+) T cells.
3921 15340148 Similarly, we found with a cotransfer model that CD4(+)CD62L(+) T cells but not CD4(+)CD25(+) T cells inhibited diabetes transfer into NOD SCID recipients by transgenic NOD BDC2.5 SCID cells.
3922 15340148 Data are presented arguing for the role of CD4(+)CD62L(+) T cells present within the polyclonal diabetogenic population in mediating this apparently paradoxical effect.
3923 15340148 Collectively, these data confirm the central role of CD4(+)CD62L(+) regulatory T cells in controlling disease onset in a well defined transgenic model of autoimmune diabetes and suggest the intervention of homeostatic mechanisms as part of their mode of action.
3924 15340148 Unique role of CD4+CD62L+ regulatory T cells in the control of autoimmune diabetes in T cell receptor transgenic mice.
3925 15340148 We first show that diabetes onset is prevented in such mice by infusion of polyclonal CD4(+) T cells expressing L-selectin (CD62L) but not prevented or only marginally prevented by CD4(+)CD25(+) T cells.
3926 15340148 Similarly, we found with a cotransfer model that CD4(+)CD62L(+) T cells but not CD4(+)CD25(+) T cells inhibited diabetes transfer into NOD SCID recipients by transgenic NOD BDC2.5 SCID cells.
3927 15340148 Data are presented arguing for the role of CD4(+)CD62L(+) T cells present within the polyclonal diabetogenic population in mediating this apparently paradoxical effect.
3928 15340148 Collectively, these data confirm the central role of CD4(+)CD62L(+) regulatory T cells in controlling disease onset in a well defined transgenic model of autoimmune diabetes and suggest the intervention of homeostatic mechanisms as part of their mode of action.
3929 15340148 Unique role of CD4+CD62L+ regulatory T cells in the control of autoimmune diabetes in T cell receptor transgenic mice.
3930 15340148 We first show that diabetes onset is prevented in such mice by infusion of polyclonal CD4(+) T cells expressing L-selectin (CD62L) but not prevented or only marginally prevented by CD4(+)CD25(+) T cells.
3931 15340148 Similarly, we found with a cotransfer model that CD4(+)CD62L(+) T cells but not CD4(+)CD25(+) T cells inhibited diabetes transfer into NOD SCID recipients by transgenic NOD BDC2.5 SCID cells.
3932 15340148 Data are presented arguing for the role of CD4(+)CD62L(+) T cells present within the polyclonal diabetogenic population in mediating this apparently paradoxical effect.
3933 15340148 Collectively, these data confirm the central role of CD4(+)CD62L(+) regulatory T cells in controlling disease onset in a well defined transgenic model of autoimmune diabetes and suggest the intervention of homeostatic mechanisms as part of their mode of action.
3934 15343360 Parallel with disease protection, we observed a prolonged increase of the numbers of CD4+CD25+ T cells in the periphery of GAD-IgG-treated mice, compared to those treated with a control IgG vector, both in the prediabetic period and persisting even 8 months after gene therapy.
3935 15343360 Moreover, CD4+CD25+ T cells induced by GAD-IgG fusion construct were capable of suppressing the proliferative response of CD4+CD25- T cells in vitro; and ablation of the activity of CD4+CD25+ T cells by blocking antibody against CD25 could reverse GAD-specific T-cell hyporesponsiveness.
3936 15343360 These results suggested that CD4+CD25+ T-cell subset induced in GAD-IgG-treated NOD mice represented the regulatory or suppressive CD4+CD25+ T cells (Treg) and might play an important role in the induction and maintenance of tolerance in NOD mice.
3937 15343360 Furthermore, the numbers of splenic CD4+CD62L+ regulatory T cells in GAD-IgG-treated mice during the prediabetic period and serum TGF-beta levels in 34-38-week-old GAD-IgG-protected mice were also increased, compared to control IgG-treated ones.
3938 15343360 Parallel with disease protection, we observed a prolonged increase of the numbers of CD4+CD25+ T cells in the periphery of GAD-IgG-treated mice, compared to those treated with a control IgG vector, both in the prediabetic period and persisting even 8 months after gene therapy.
3939 15343360 Moreover, CD4+CD25+ T cells induced by GAD-IgG fusion construct were capable of suppressing the proliferative response of CD4+CD25- T cells in vitro; and ablation of the activity of CD4+CD25+ T cells by blocking antibody against CD25 could reverse GAD-specific T-cell hyporesponsiveness.
3940 15343360 These results suggested that CD4+CD25+ T-cell subset induced in GAD-IgG-treated NOD mice represented the regulatory or suppressive CD4+CD25+ T cells (Treg) and might play an important role in the induction and maintenance of tolerance in NOD mice.
3941 15343360 Furthermore, the numbers of splenic CD4+CD62L+ regulatory T cells in GAD-IgG-treated mice during the prediabetic period and serum TGF-beta levels in 34-38-week-old GAD-IgG-protected mice were also increased, compared to control IgG-treated ones.
3942 15343360 Parallel with disease protection, we observed a prolonged increase of the numbers of CD4+CD25+ T cells in the periphery of GAD-IgG-treated mice, compared to those treated with a control IgG vector, both in the prediabetic period and persisting even 8 months after gene therapy.
3943 15343360 Moreover, CD4+CD25+ T cells induced by GAD-IgG fusion construct were capable of suppressing the proliferative response of CD4+CD25- T cells in vitro; and ablation of the activity of CD4+CD25+ T cells by blocking antibody against CD25 could reverse GAD-specific T-cell hyporesponsiveness.
3944 15343360 These results suggested that CD4+CD25+ T-cell subset induced in GAD-IgG-treated NOD mice represented the regulatory or suppressive CD4+CD25+ T cells (Treg) and might play an important role in the induction and maintenance of tolerance in NOD mice.
3945 15343360 Furthermore, the numbers of splenic CD4+CD62L+ regulatory T cells in GAD-IgG-treated mice during the prediabetic period and serum TGF-beta levels in 34-38-week-old GAD-IgG-protected mice were also increased, compared to control IgG-treated ones.
3946 15343360 Parallel with disease protection, we observed a prolonged increase of the numbers of CD4+CD25+ T cells in the periphery of GAD-IgG-treated mice, compared to those treated with a control IgG vector, both in the prediabetic period and persisting even 8 months after gene therapy.
3947 15343360 Moreover, CD4+CD25+ T cells induced by GAD-IgG fusion construct were capable of suppressing the proliferative response of CD4+CD25- T cells in vitro; and ablation of the activity of CD4+CD25+ T cells by blocking antibody against CD25 could reverse GAD-specific T-cell hyporesponsiveness.
3948 15343360 These results suggested that CD4+CD25+ T-cell subset induced in GAD-IgG-treated NOD mice represented the regulatory or suppressive CD4+CD25+ T cells (Treg) and might play an important role in the induction and maintenance of tolerance in NOD mice.
3949 15343360 Furthermore, the numbers of splenic CD4+CD62L+ regulatory T cells in GAD-IgG-treated mice during the prediabetic period and serum TGF-beta levels in 34-38-week-old GAD-IgG-protected mice were also increased, compared to control IgG-treated ones.
3950 15356107 B7-2 (CD86) controls the priming of autoreactive CD4 T cell response against pancreatic islets.
3951 15356107 We investigated the role played by B7-2 in influencing pathogenic autoimmunity from islet-reactive CD4 T cells in B7-2 knockout (KO) NOD mice which are protected from type 1 diabetes.
3952 15356107 B7-2 deficiency caused a profound diminishment in the generation of spontaneously activated CD4 T cells and islet-specific CD4 T cell expansion.
3953 15356107 CD4 T cells showed some hallmarks of hyporesponsiveness because TCR/CD28-mediated stimulation led to defective activation and failure to induce disease in NODscid recipients.
3954 15356107 Furthermore, CD4 T cells exhibited enhanced death in the absence of B7-2.
3955 15356107 Interestingly, we found that B7-2 is required to achieve normal levels of CD4+CD25+CD62L+ T regulatory cells because a significant reduction of these T regulatory cells was observed in the thymus but not in the peripheral compartments of B7-2KO mice.
3956 15356107 Taken together these results clearly indicate that B7-2 plays a critical role in priming islet-reactive CD4 T cells, suggesting a simplified, two-cell model for the impact of this costimulatory molecule in autoimmunity against islets.
3957 15356107 B7-2 (CD86) controls the priming of autoreactive CD4 T cell response against pancreatic islets.
3958 15356107 We investigated the role played by B7-2 in influencing pathogenic autoimmunity from islet-reactive CD4 T cells in B7-2 knockout (KO) NOD mice which are protected from type 1 diabetes.
3959 15356107 B7-2 deficiency caused a profound diminishment in the generation of spontaneously activated CD4 T cells and islet-specific CD4 T cell expansion.
3960 15356107 CD4 T cells showed some hallmarks of hyporesponsiveness because TCR/CD28-mediated stimulation led to defective activation and failure to induce disease in NODscid recipients.
3961 15356107 Furthermore, CD4 T cells exhibited enhanced death in the absence of B7-2.
3962 15356107 Interestingly, we found that B7-2 is required to achieve normal levels of CD4+CD25+CD62L+ T regulatory cells because a significant reduction of these T regulatory cells was observed in the thymus but not in the peripheral compartments of B7-2KO mice.
3963 15356107 Taken together these results clearly indicate that B7-2 plays a critical role in priming islet-reactive CD4 T cells, suggesting a simplified, two-cell model for the impact of this costimulatory molecule in autoimmunity against islets.
3964 15356107 B7-2 (CD86) controls the priming of autoreactive CD4 T cell response against pancreatic islets.
3965 15356107 We investigated the role played by B7-2 in influencing pathogenic autoimmunity from islet-reactive CD4 T cells in B7-2 knockout (KO) NOD mice which are protected from type 1 diabetes.
3966 15356107 B7-2 deficiency caused a profound diminishment in the generation of spontaneously activated CD4 T cells and islet-specific CD4 T cell expansion.
3967 15356107 CD4 T cells showed some hallmarks of hyporesponsiveness because TCR/CD28-mediated stimulation led to defective activation and failure to induce disease in NODscid recipients.
3968 15356107 Furthermore, CD4 T cells exhibited enhanced death in the absence of B7-2.
3969 15356107 Interestingly, we found that B7-2 is required to achieve normal levels of CD4+CD25+CD62L+ T regulatory cells because a significant reduction of these T regulatory cells was observed in the thymus but not in the peripheral compartments of B7-2KO mice.
3970 15356107 Taken together these results clearly indicate that B7-2 plays a critical role in priming islet-reactive CD4 T cells, suggesting a simplified, two-cell model for the impact of this costimulatory molecule in autoimmunity against islets.
3971 15356107 B7-2 (CD86) controls the priming of autoreactive CD4 T cell response against pancreatic islets.
3972 15356107 We investigated the role played by B7-2 in influencing pathogenic autoimmunity from islet-reactive CD4 T cells in B7-2 knockout (KO) NOD mice which are protected from type 1 diabetes.
3973 15356107 B7-2 deficiency caused a profound diminishment in the generation of spontaneously activated CD4 T cells and islet-specific CD4 T cell expansion.
3974 15356107 CD4 T cells showed some hallmarks of hyporesponsiveness because TCR/CD28-mediated stimulation led to defective activation and failure to induce disease in NODscid recipients.
3975 15356107 Furthermore, CD4 T cells exhibited enhanced death in the absence of B7-2.
3976 15356107 Interestingly, we found that B7-2 is required to achieve normal levels of CD4+CD25+CD62L+ T regulatory cells because a significant reduction of these T regulatory cells was observed in the thymus but not in the peripheral compartments of B7-2KO mice.
3977 15356107 Taken together these results clearly indicate that B7-2 plays a critical role in priming islet-reactive CD4 T cells, suggesting a simplified, two-cell model for the impact of this costimulatory molecule in autoimmunity against islets.
3978 15356107 B7-2 (CD86) controls the priming of autoreactive CD4 T cell response against pancreatic islets.
3979 15356107 We investigated the role played by B7-2 in influencing pathogenic autoimmunity from islet-reactive CD4 T cells in B7-2 knockout (KO) NOD mice which are protected from type 1 diabetes.
3980 15356107 B7-2 deficiency caused a profound diminishment in the generation of spontaneously activated CD4 T cells and islet-specific CD4 T cell expansion.
3981 15356107 CD4 T cells showed some hallmarks of hyporesponsiveness because TCR/CD28-mediated stimulation led to defective activation and failure to induce disease in NODscid recipients.
3982 15356107 Furthermore, CD4 T cells exhibited enhanced death in the absence of B7-2.
3983 15356107 Interestingly, we found that B7-2 is required to achieve normal levels of CD4+CD25+CD62L+ T regulatory cells because a significant reduction of these T regulatory cells was observed in the thymus but not in the peripheral compartments of B7-2KO mice.
3984 15356107 Taken together these results clearly indicate that B7-2 plays a critical role in priming islet-reactive CD4 T cells, suggesting a simplified, two-cell model for the impact of this costimulatory molecule in autoimmunity against islets.
3985 15356107 B7-2 (CD86) controls the priming of autoreactive CD4 T cell response against pancreatic islets.
3986 15356107 We investigated the role played by B7-2 in influencing pathogenic autoimmunity from islet-reactive CD4 T cells in B7-2 knockout (KO) NOD mice which are protected from type 1 diabetes.
3987 15356107 B7-2 deficiency caused a profound diminishment in the generation of spontaneously activated CD4 T cells and islet-specific CD4 T cell expansion.
3988 15356107 CD4 T cells showed some hallmarks of hyporesponsiveness because TCR/CD28-mediated stimulation led to defective activation and failure to induce disease in NODscid recipients.
3989 15356107 Furthermore, CD4 T cells exhibited enhanced death in the absence of B7-2.
3990 15356107 Interestingly, we found that B7-2 is required to achieve normal levels of CD4+CD25+CD62L+ T regulatory cells because a significant reduction of these T regulatory cells was observed in the thymus but not in the peripheral compartments of B7-2KO mice.
3991 15356107 Taken together these results clearly indicate that B7-2 plays a critical role in priming islet-reactive CD4 T cells, suggesting a simplified, two-cell model for the impact of this costimulatory molecule in autoimmunity against islets.
3992 15356107 B7-2 (CD86) controls the priming of autoreactive CD4 T cell response against pancreatic islets.
3993 15356107 We investigated the role played by B7-2 in influencing pathogenic autoimmunity from islet-reactive CD4 T cells in B7-2 knockout (KO) NOD mice which are protected from type 1 diabetes.
3994 15356107 B7-2 deficiency caused a profound diminishment in the generation of spontaneously activated CD4 T cells and islet-specific CD4 T cell expansion.
3995 15356107 CD4 T cells showed some hallmarks of hyporesponsiveness because TCR/CD28-mediated stimulation led to defective activation and failure to induce disease in NODscid recipients.
3996 15356107 Furthermore, CD4 T cells exhibited enhanced death in the absence of B7-2.
3997 15356107 Interestingly, we found that B7-2 is required to achieve normal levels of CD4+CD25+CD62L+ T regulatory cells because a significant reduction of these T regulatory cells was observed in the thymus but not in the peripheral compartments of B7-2KO mice.
3998 15356107 Taken together these results clearly indicate that B7-2 plays a critical role in priming islet-reactive CD4 T cells, suggesting a simplified, two-cell model for the impact of this costimulatory molecule in autoimmunity against islets.
3999 15358643 In the placebo group, an increase in the number of subsets with the activated phenotype in both the CD4(CD29+) and the CD8 (CD11a+) compartments was noted during the course of the study.
4000 15358643 However, in the placebo group the proportions of activated CD4 and CD8 cells increased over time.
4001 15358643 In the placebo group, an increase in the number of subsets with the activated phenotype in both the CD4(CD29+) and the CD8 (CD11a+) compartments was noted during the course of the study.
4002 15358643 However, in the placebo group the proportions of activated CD4 and CD8 cells increased over time.
4003 15368274 In NOD mice, CD28/B7 and CD40/CD40 ligand (L) interactions control the onset of diabetes from 2 to 4 weeks of age, but blocking these molecules has little effect after this time.
4004 15368274 We now show that OX40 is expressed on CD4 and CD8 T cells several weeks prior to islet destruction, which is initiated around weeks 12-14, and that OX40L is present on dendritic cells in both secondary lymphoid organs and the pancreas from 11 to 13 weeks of age.
4005 15368281 While CD4(+) T cells from NOD mice secreted IFN-gamma, IL-4, IL-5 and IL-10 in response to LACK, those from LACK-expressing Tg mice secreted reduced levels of cytokines.
4006 15380036 Three forms of these regulatory T cells have been described: those that function via the production of the cytokine IL-10 (T regulatory 1 cells), transforming growth factor beta (Th3 cells), and a population of T cells that suppresses proliferation via a cell-contact-dependent mechanism (CD4+CD25+ TR cells).
4007 15383562 Phenotypically "immature" dendritic cells (DCs), defined by low cell surface CD40, CD80, and CD86 can elicit host immune suppression in allotransplantation and autoimmunity.
4008 15383562 CD40, CD80, and CD86 cell surface molecules were specifically down-regulated by treating NOD DCs ex vivo with a mixture of antisense oligonucleotides targeting the CD40, CD80, and CD86 primary transcripts.
4009 15383562 Engineered DC promoted an increased prevalence of CD4(+)CD25(+) T cells in NOD recipients at all ages examined and diabetes-free recipients exhibited significantly greater numbers of CD4(+)CD25(+) T cells compared with untreated NOD mice.
4010 15383571 Treatment of NOD mice with a mitogenic anti-CD3 depletes CD4(+)CD25(-)CD62L(+) but not CD4(+)CD25(+)CD62L(+) T cells, thereby resulting in an increase of the latter subset in the spleen.
4011 15383571 These results demonstrate that the capacity of anti-CD3 to protect NOD mice from T1D correlates with its ability to perturb T cell homeostasis by inducing CD8(+) T cell AICD and increasing the number of CD4(+)CD25(+)CD62L(+) T cells in the periphery.
4012 15383571 Treatment of NOD mice with a mitogenic anti-CD3 depletes CD4(+)CD25(-)CD62L(+) but not CD4(+)CD25(+)CD62L(+) T cells, thereby resulting in an increase of the latter subset in the spleen.
4013 15383571 These results demonstrate that the capacity of anti-CD3 to protect NOD mice from T1D correlates with its ability to perturb T cell homeostasis by inducing CD8(+) T cell AICD and increasing the number of CD4(+)CD25(+)CD62L(+) T cells in the periphery.
4014 15386802 This review will concentrate on two different types of regulatory T-cells, the naturally occurring ('professional') CD4+CD25+ T-cells and antigen-induced ('adaptive') CD4+ Th2-like regulatory T-cells.
4015 15460904 Donor-specific tolerance induced by simultaneous allogeneic islet transplantation with CD4+CD25+ T-cells into hepatic parenchyma in mice.
4016 15467837 CD28-B7 and CD40 ligand-CD40 (CD40L-CD40) costimulatory pathways affect the development of disease and are promising therapeutic targets.
4017 15467837 Moreover, the residual proliferation of the autoreactive cells was effectively controlled by CD28-dependent CD4+CD25+ regulatory T cells (Treg's), as depletion of Treg's partially restored proliferation of autoreactive T cells and resulted in diabetes in an adoptive-transfer model.
4018 15468055 Distinct roles of CTLA-4 and TGF-beta in CD4+CD25+ regulatory T cell function.
4019 15468055 Both CTLA-4 and TGF-beta have been implicated in suppression by CD4+CD25+ regulatory T cells (Treg).
4020 15468055 In this study, the relationship between CTLA-4 and TGF-beta in Treg function was examined.
4021 15468055 These CTLA-4-deficient Treg expressed increased levels of the suppressive cytokines IL-10 and TGF-beta, and in vitro suppression mediated by CTLA-4(-/-) Treg was markedly reduced by neutralizing TGF-beta, suggesting that CTLA-4-deficient Treg develop a compensatory suppressive mechanism through CTLA-4-independent production of TGF-beta.
4022 15468055 Distinct roles of CTLA-4 and TGF-beta in CD4+CD25+ regulatory T cell function.
4023 15468055 Both CTLA-4 and TGF-beta have been implicated in suppression by CD4+CD25+ regulatory T cells (Treg).
4024 15468055 In this study, the relationship between CTLA-4 and TGF-beta in Treg function was examined.
4025 15468055 These CTLA-4-deficient Treg expressed increased levels of the suppressive cytokines IL-10 and TGF-beta, and in vitro suppression mediated by CTLA-4(-/-) Treg was markedly reduced by neutralizing TGF-beta, suggesting that CTLA-4-deficient Treg develop a compensatory suppressive mechanism through CTLA-4-independent production of TGF-beta.
4026 15470032 Insulin-dependent diabetes mellitus (IDDM) and Sjogren's syndrome (SS) are highly regulated autoimmune diseases that develop spontaneously in NOD mice.
4027 15470032 The aim of the present in vivo study was to explore the functional importance of the E2f1 molecule in IDDM and SS, in the context of whole animal physiology and pathophysiology, using E2f1-deficient NOD mice.
4028 15470032 These mice also exhibited a defect in T lymphocyte development, leading to excessive numbers of mature T cells (CD4+ and CD8+), due to a maturation stage-specific defect in the apoptosis of thymocytes and peripheral T cells.
4029 15470032 Furthermore, E2f1-deficient mice showed a profound decrease of immunoregulatory CD4+CD25+ T cells, while the spleen cells of NOD mice lacking E2f1 showed a significant increase of the proinflammatory cytokine IFN-gamma following antigenic stimulation in vitro.
4030 15470032 Consistent with these observations, E2f1 homozygous mutant NOD mice were highly predisposed to the development of IDDM and SS.
4031 15470032 Insulin-dependent diabetes mellitus (IDDM) and Sjogren's syndrome (SS) are highly regulated autoimmune diseases that develop spontaneously in NOD mice.
4032 15470032 The aim of the present in vivo study was to explore the functional importance of the E2f1 molecule in IDDM and SS, in the context of whole animal physiology and pathophysiology, using E2f1-deficient NOD mice.
4033 15470032 These mice also exhibited a defect in T lymphocyte development, leading to excessive numbers of mature T cells (CD4+ and CD8+), due to a maturation stage-specific defect in the apoptosis of thymocytes and peripheral T cells.
4034 15470032 Furthermore, E2f1-deficient mice showed a profound decrease of immunoregulatory CD4+CD25+ T cells, while the spleen cells of NOD mice lacking E2f1 showed a significant increase of the proinflammatory cytokine IFN-gamma following antigenic stimulation in vitro.
4035 15470032 Consistent with these observations, E2f1 homozygous mutant NOD mice were highly predisposed to the development of IDDM and SS.
4036 15474483 Transcriptome and proteome expression in activated human CD4 and CD8 T-lymphocytes.
4037 15474483 T-lymphocytes (T-cells) are unique in that unlike monocytes, they have no insulin receptors, and are insulin insensitive, but upon activation with antigens develop insulin, IGF-1, and IL-2 receptors, and become insulin sensitive tissues.
4038 15474483 We analyzed the genomics and proteomics of activated and non-activated CD4+ and CD8+ T-cells of normal subjects using Affymetrix microarray gene chips and proteomes by SELDI-TOF mass spectrometry analysis.
4039 15474483 Genes for IL-2, insulin, and IGF-1 receptors were increased at least 2-fold in activated vs non-activated T-cells.
4040 15474483 Among activated ontologies were signal transduction pathways such as IRS-1, IRS-2, Akt, and glycolytic pathways.
4041 15474483 Transcriptome and proteome expression in activated human CD4 and CD8 T-lymphocytes.
4042 15474483 T-lymphocytes (T-cells) are unique in that unlike monocytes, they have no insulin receptors, and are insulin insensitive, but upon activation with antigens develop insulin, IGF-1, and IL-2 receptors, and become insulin sensitive tissues.
4043 15474483 We analyzed the genomics and proteomics of activated and non-activated CD4+ and CD8+ T-cells of normal subjects using Affymetrix microarray gene chips and proteomes by SELDI-TOF mass spectrometry analysis.
4044 15474483 Genes for IL-2, insulin, and IGF-1 receptors were increased at least 2-fold in activated vs non-activated T-cells.
4045 15474483 Among activated ontologies were signal transduction pathways such as IRS-1, IRS-2, Akt, and glycolytic pathways.
4046 15476470 Additional signaling pathways and molecules, such as the Janus kinase pathway and vascular endothelial growth factor have been added to those recognized as important in pharmacologic immunosuppression, and the concepts of regulation, once polarized between CD8+ and CD4+ camps, have begun to converge upon a recognition that there are many phenotypes of regulatory cells.
4047 15492124 Loss of one copy of Aire diminished thymic expression of the endogenous insulin gene and the transgene, resulting in a 300% increase in islet-reactive CD4 T cells escaping thymic deletion in T cell receptor transgenic mice, and dramatically increased progression to diabetes.
4048 15492124 Thymic deletion induced by antigen under control of the thyroglobulin promoter was abolished in Aire homozygotes and less efficient in heterozygotes, providing an explanation for thyroid autoimmunity in APS1.
4049 15494484 At 5-8 wk of age, even in the absence of TCRbeta expression, CD4+ and CD4+CD8+ blasts appear spontaneously.
4050 15494484 They mimic normal beta selection by up-regulating germline TCR-Calpha transcripts, CD2, and Bcl-xL and down-regulating Bcl-2.
4051 15494484 However, they fail to down-regulate transcription factors HEB-alt and Hes1 and initially express aberrantly high levels of Spi-B, c-kit (CD117), and IL-7Ralpha.
4052 15494540 CD4 T cells play an important role in hepatitis B virus (HBV) infection by secretion of Th1 cytokines that down-regulate HBV replication, and by promoting CD8 T cell and B cell responses.
4053 15494540 All 10 epitopes bound with high affinity to the most prevalent HLA-DR Ags, were conserved among HBV genomes, and induced IFN-gamma responses from HBV-specific CD4+ T cells.
4054 15494540 Several epitopes contained nested MHC class I motifs and stimulated HBV-specific IFN-gamma production and cytotoxicity of CD8+ T cells.
4055 15494540 CD4 T cells play an important role in hepatitis B virus (HBV) infection by secretion of Th1 cytokines that down-regulate HBV replication, and by promoting CD8 T cell and B cell responses.
4056 15494540 All 10 epitopes bound with high affinity to the most prevalent HLA-DR Ags, were conserved among HBV genomes, and induced IFN-gamma responses from HBV-specific CD4+ T cells.
4057 15494540 Several epitopes contained nested MHC class I motifs and stimulated HBV-specific IFN-gamma production and cytotoxicity of CD8+ T cells.
4058 15534371 It has been reported that the differentiation of CD4+CD25+ regulatory T cells (T reg cells) can be induced by agonist peptide/major histocompatibility complex ligands in the thymus.
4059 15534371 However, CD4+CD25+ thymocytes were much less sensitive than their CD4+CD25- companions, by two to three orders of magnitude, to agonist-induced clonal deletion, such that their proportion increased, giving the false impression of induced differentiation.
4060 15534371 To account for these and prior observations, one can propose that differentiation along the CD4+CD25+ pathway is induced by cues other than recognition of self-agonist cues, which are poorly read by thymocytes, whose T cell receptors are conducive to selection toward the conventional CD4+CD25- lineage.
4061 15534371 It has been reported that the differentiation of CD4+CD25+ regulatory T cells (T reg cells) can be induced by agonist peptide/major histocompatibility complex ligands in the thymus.
4062 15534371 However, CD4+CD25+ thymocytes were much less sensitive than their CD4+CD25- companions, by two to three orders of magnitude, to agonist-induced clonal deletion, such that their proportion increased, giving the false impression of induced differentiation.
4063 15534371 To account for these and prior observations, one can propose that differentiation along the CD4+CD25+ pathway is induced by cues other than recognition of self-agonist cues, which are poorly read by thymocytes, whose T cell receptors are conducive to selection toward the conventional CD4+CD25- lineage.
4064 15534371 It has been reported that the differentiation of CD4+CD25+ regulatory T cells (T reg cells) can be induced by agonist peptide/major histocompatibility complex ligands in the thymus.
4065 15534371 However, CD4+CD25+ thymocytes were much less sensitive than their CD4+CD25- companions, by two to three orders of magnitude, to agonist-induced clonal deletion, such that their proportion increased, giving the false impression of induced differentiation.
4066 15534371 To account for these and prior observations, one can propose that differentiation along the CD4+CD25+ pathway is induced by cues other than recognition of self-agonist cues, which are poorly read by thymocytes, whose T cell receptors are conducive to selection toward the conventional CD4+CD25- lineage.
4067 15539509 Association of CD4+ CD25+ T cells with prevention of severe destructive arthritis in Borrelia burgdorferi-vaccinated and challenged gamma interferon-deficient mice treated with anti-interleukin-17 antibody.
4068 15539509 CD4+ CD25+ T cells are a population of regulatory T cells responsible for active suppression of autoimmunity.
4069 15539509 Specifically, CD4+ CD25+ T cells have been shown to prevent insulin-dependent diabetes mellitus, inflammatory bowel disease, and pancreatitis.
4070 15539509 Here, we present evidence that CD4+ CD25+ T cells also play a major role in controlling the severity of arthritis detected in Borrelia burgdorferi-vaccinated gamma interferon-deficient (IFN-gamma degrees ) C57BL/6 mice challenged with the Lyme spirochete.
4071 15539509 When B. burgdorferi-vaccinated and challenged IFN-gamma degrees mice were treated with anti-interleukin-17 (IL-17) antibody, the number of CD4+ CD25+ T cells increased in the local lymph nodes.
4072 15539509 When these anti-IL-17-treated B. burgdorferi-vaccinated and challenged mice were also administered anti-CD25 antibody, the number of CD4+ CD25+ T cells in the local lymph nodes decreased.
4073 15539509 These results suggest that CD4+ CD25+ T cells are involved in regulation of a severe destructive arthritis induced with an experimental model of vaccination and challenge with B. burgdorferi.
4074 15539509 Association of CD4+ CD25+ T cells with prevention of severe destructive arthritis in Borrelia burgdorferi-vaccinated and challenged gamma interferon-deficient mice treated with anti-interleukin-17 antibody.
4075 15539509 CD4+ CD25+ T cells are a population of regulatory T cells responsible for active suppression of autoimmunity.
4076 15539509 Specifically, CD4+ CD25+ T cells have been shown to prevent insulin-dependent diabetes mellitus, inflammatory bowel disease, and pancreatitis.
4077 15539509 Here, we present evidence that CD4+ CD25+ T cells also play a major role in controlling the severity of arthritis detected in Borrelia burgdorferi-vaccinated gamma interferon-deficient (IFN-gamma degrees ) C57BL/6 mice challenged with the Lyme spirochete.
4078 15539509 When B. burgdorferi-vaccinated and challenged IFN-gamma degrees mice were treated with anti-interleukin-17 (IL-17) antibody, the number of CD4+ CD25+ T cells increased in the local lymph nodes.
4079 15539509 When these anti-IL-17-treated B. burgdorferi-vaccinated and challenged mice were also administered anti-CD25 antibody, the number of CD4+ CD25+ T cells in the local lymph nodes decreased.
4080 15539509 These results suggest that CD4+ CD25+ T cells are involved in regulation of a severe destructive arthritis induced with an experimental model of vaccination and challenge with B. burgdorferi.
4081 15539509 Association of CD4+ CD25+ T cells with prevention of severe destructive arthritis in Borrelia burgdorferi-vaccinated and challenged gamma interferon-deficient mice treated with anti-interleukin-17 antibody.
4082 15539509 CD4+ CD25+ T cells are a population of regulatory T cells responsible for active suppression of autoimmunity.
4083 15539509 Specifically, CD4+ CD25+ T cells have been shown to prevent insulin-dependent diabetes mellitus, inflammatory bowel disease, and pancreatitis.
4084 15539509 Here, we present evidence that CD4+ CD25+ T cells also play a major role in controlling the severity of arthritis detected in Borrelia burgdorferi-vaccinated gamma interferon-deficient (IFN-gamma degrees ) C57BL/6 mice challenged with the Lyme spirochete.
4085 15539509 When B. burgdorferi-vaccinated and challenged IFN-gamma degrees mice were treated with anti-interleukin-17 (IL-17) antibody, the number of CD4+ CD25+ T cells increased in the local lymph nodes.
4086 15539509 When these anti-IL-17-treated B. burgdorferi-vaccinated and challenged mice were also administered anti-CD25 antibody, the number of CD4+ CD25+ T cells in the local lymph nodes decreased.
4087 15539509 These results suggest that CD4+ CD25+ T cells are involved in regulation of a severe destructive arthritis induced with an experimental model of vaccination and challenge with B. burgdorferi.
4088 15539509 Association of CD4+ CD25+ T cells with prevention of severe destructive arthritis in Borrelia burgdorferi-vaccinated and challenged gamma interferon-deficient mice treated with anti-interleukin-17 antibody.
4089 15539509 CD4+ CD25+ T cells are a population of regulatory T cells responsible for active suppression of autoimmunity.
4090 15539509 Specifically, CD4+ CD25+ T cells have been shown to prevent insulin-dependent diabetes mellitus, inflammatory bowel disease, and pancreatitis.
4091 15539509 Here, we present evidence that CD4+ CD25+ T cells also play a major role in controlling the severity of arthritis detected in Borrelia burgdorferi-vaccinated gamma interferon-deficient (IFN-gamma degrees ) C57BL/6 mice challenged with the Lyme spirochete.
4092 15539509 When B. burgdorferi-vaccinated and challenged IFN-gamma degrees mice were treated with anti-interleukin-17 (IL-17) antibody, the number of CD4+ CD25+ T cells increased in the local lymph nodes.
4093 15539509 When these anti-IL-17-treated B. burgdorferi-vaccinated and challenged mice were also administered anti-CD25 antibody, the number of CD4+ CD25+ T cells in the local lymph nodes decreased.
4094 15539509 These results suggest that CD4+ CD25+ T cells are involved in regulation of a severe destructive arthritis induced with an experimental model of vaccination and challenge with B. burgdorferi.
4095 15539509 Association of CD4+ CD25+ T cells with prevention of severe destructive arthritis in Borrelia burgdorferi-vaccinated and challenged gamma interferon-deficient mice treated with anti-interleukin-17 antibody.
4096 15539509 CD4+ CD25+ T cells are a population of regulatory T cells responsible for active suppression of autoimmunity.
4097 15539509 Specifically, CD4+ CD25+ T cells have been shown to prevent insulin-dependent diabetes mellitus, inflammatory bowel disease, and pancreatitis.
4098 15539509 Here, we present evidence that CD4+ CD25+ T cells also play a major role in controlling the severity of arthritis detected in Borrelia burgdorferi-vaccinated gamma interferon-deficient (IFN-gamma degrees ) C57BL/6 mice challenged with the Lyme spirochete.
4099 15539509 When B. burgdorferi-vaccinated and challenged IFN-gamma degrees mice were treated with anti-interleukin-17 (IL-17) antibody, the number of CD4+ CD25+ T cells increased in the local lymph nodes.
4100 15539509 When these anti-IL-17-treated B. burgdorferi-vaccinated and challenged mice were also administered anti-CD25 antibody, the number of CD4+ CD25+ T cells in the local lymph nodes decreased.
4101 15539509 These results suggest that CD4+ CD25+ T cells are involved in regulation of a severe destructive arthritis induced with an experimental model of vaccination and challenge with B. burgdorferi.
4102 15539509 Association of CD4+ CD25+ T cells with prevention of severe destructive arthritis in Borrelia burgdorferi-vaccinated and challenged gamma interferon-deficient mice treated with anti-interleukin-17 antibody.
4103 15539509 CD4+ CD25+ T cells are a population of regulatory T cells responsible for active suppression of autoimmunity.
4104 15539509 Specifically, CD4+ CD25+ T cells have been shown to prevent insulin-dependent diabetes mellitus, inflammatory bowel disease, and pancreatitis.
4105 15539509 Here, we present evidence that CD4+ CD25+ T cells also play a major role in controlling the severity of arthritis detected in Borrelia burgdorferi-vaccinated gamma interferon-deficient (IFN-gamma degrees ) C57BL/6 mice challenged with the Lyme spirochete.
4106 15539509 When B. burgdorferi-vaccinated and challenged IFN-gamma degrees mice were treated with anti-interleukin-17 (IL-17) antibody, the number of CD4+ CD25+ T cells increased in the local lymph nodes.
4107 15539509 When these anti-IL-17-treated B. burgdorferi-vaccinated and challenged mice were also administered anti-CD25 antibody, the number of CD4+ CD25+ T cells in the local lymph nodes decreased.
4108 15539509 These results suggest that CD4+ CD25+ T cells are involved in regulation of a severe destructive arthritis induced with an experimental model of vaccination and challenge with B. burgdorferi.
4109 15539509 Association of CD4+ CD25+ T cells with prevention of severe destructive arthritis in Borrelia burgdorferi-vaccinated and challenged gamma interferon-deficient mice treated with anti-interleukin-17 antibody.
4110 15539509 CD4+ CD25+ T cells are a population of regulatory T cells responsible for active suppression of autoimmunity.
4111 15539509 Specifically, CD4+ CD25+ T cells have been shown to prevent insulin-dependent diabetes mellitus, inflammatory bowel disease, and pancreatitis.
4112 15539509 Here, we present evidence that CD4+ CD25+ T cells also play a major role in controlling the severity of arthritis detected in Borrelia burgdorferi-vaccinated gamma interferon-deficient (IFN-gamma degrees ) C57BL/6 mice challenged with the Lyme spirochete.
4113 15539509 When B. burgdorferi-vaccinated and challenged IFN-gamma degrees mice were treated with anti-interleukin-17 (IL-17) antibody, the number of CD4+ CD25+ T cells increased in the local lymph nodes.
4114 15539509 When these anti-IL-17-treated B. burgdorferi-vaccinated and challenged mice were also administered anti-CD25 antibody, the number of CD4+ CD25+ T cells in the local lymph nodes decreased.
4115 15539509 These results suggest that CD4+ CD25+ T cells are involved in regulation of a severe destructive arthritis induced with an experimental model of vaccination and challenge with B. burgdorferi.
4116 15542454 Nonspecific in vitro stimulation induced more CD-4+/IL-4+ cells in Brussels maintained.
4117 15542454 TSHR stimulation produced a significant increase in IL-4 secretion in six of nine local but one of seven Brussels mice.
4118 15549775 Inhibition of altered peptide ligand-mediated antagonism of human GAD65-responsive CD4+ T cells by non-antagonizable T cells.
4119 15549775 In this study we identified several altered peptide ligands derived from the type 1 diabetes-associated autoantigen human glutamic acid decarboxylase 65 (hGAD65) epitope that were capable of antagonizing a subset of a panel of human CD4(+) GAD65 (555-567)-responsive T cell clones derived from a diabetic individual.
4120 15549775 Inhibition of altered peptide ligand-mediated antagonism of human GAD65-responsive CD4+ T cells by non-antagonizable T cells.
4121 15549775 In this study we identified several altered peptide ligands derived from the type 1 diabetes-associated autoantigen human glutamic acid decarboxylase 65 (hGAD65) epitope that were capable of antagonizing a subset of a panel of human CD4(+) GAD65 (555-567)-responsive T cell clones derived from a diabetic individual.
4122 15557155 CTLA-4, a homologue of CD28, is a negative regulator of T cell activation in the periphery and is transiently expressed on the cell surface after T cell activation.
4123 15557155 This investigation was initiated to determine the role of CTLA-4 in the activation of CD4(+)CD8(+) double-positive (DP) and CD4(+)CD8(-) and CD4(-)CD8(+) single-positive (SP) thymocytes using fetal thymic organ cultures (FTOC) of MHC class II-restricted, OVA(323-339)-restricted TCR transgenic mice (DO11.10).
4124 15557155 In addition, anti-CTLA-4 Ab treatment inhibited OVA(323-339)-induced expression of the early activation marker, CD69, in DP thymocytes, but increased CD69 in SP thymocytes.
4125 15557165 Individual nonobese diabetic mice exhibit unique patterns of CD8+ T cell reactivity to three islet antigens, including the newly identified widely expressed dystrophia myotonica kinase.
4126 15557165 Spontaneous autoimmune diabetes development in NOD mice requires both CD8(+) and CD4(+) T cells.
4127 15557165 Although the Ags for G9C8 and 8.3 are known to be insulin and islet-specific glucose-6-phosphatase catalytic subunit-related protein, respectively, only mimotope peptides had previously been identified for AI4.
4128 15557165 Screening of a combinatorial peptide library in positional scanning format led to the identification of a peptide derived from dystrophia myotonica kinase (DMK) that is recognized by AI4-like T cells.
4129 15557171 Immunization of NOD mice with autoantigens such as glutamic acid decarboxylase (GAD) 221-235 peptide (p221) can induce Ag-specific CD4(+) T regulatory (Tr) cells.
4130 15557171 The N221(+) T cells produced IFN-gamma and IL-10, but very little IL-4, in response to p221 stimulation.
4131 15557171 This suppressive activity was cell contact-independent and was abrogated by Abs to IL-10 or IL-10R.
4132 15557171 Interestingly, IL-2 produced by other T cells present in the cell culture induced unactivated N221(+) T cells to exhibit regulatory activities involving production of IL-10.
4133 15578422 The CD4+/CD8+ ratio was low during the initial follow up stages (3 and 7 days) in untreated diabetic rats, yet an increased ratio corresponding to areas around the polymer remains was noted in the animals treated with copolymer loaded with the growth hormone.
4134 15585854 Autoimmunity presumably manifests as a consequence of a shortfall in the maintenance of peripheral tolerance by CD4(+)CD25(+) T regulatory cells (Tregs).
4135 15591438 CD4(+)CD25(+) T-cells can be used to interfere with spontaneous autoimmune diseases such as type 1 diabetes.
4136 15616013 Treatment with granulocyte colony-stimulating factor prevents diabetes in NOD mice by recruiting plasmacytoid dendritic cells and functional CD4(+)CD25(+) regulatory T-cells.
4137 15616013 Accumulating evidence that granulocyte colony-stimulating factor (G-CSF), the key hematopoietic growth factor of the myeloid lineage, not only represents a major component of the endogenous response to infections, but also affects adaptive immune responses, prompted us to investigate the therapeutic potential of G-CSF in autoimmune type 1 diabetes.
4138 15616013 G-CSF recipients further displayed accumulation of functional CD4(+)CD25(+) regulatory T-cells that produce transforming growth factor-beta1 (TGF-beta1) and actively suppressed diabetes transfer by diabetogenic effector cells in secondary NOD-SCID recipients.
4139 15616013 G-CSF's ability to promote key tolerogenic interactions between DCs and regulatory T-cells was demonstrated by enhanced recruitment of TGF-beta1-expressing CD4(+)CD25(+) cells after adoptive transfer of DCs isolated from G-CSF- relative to vehicle-treated mice into naive NOD recipients.
4140 15616013 Treatment with granulocyte colony-stimulating factor prevents diabetes in NOD mice by recruiting plasmacytoid dendritic cells and functional CD4(+)CD25(+) regulatory T-cells.
4141 15616013 Accumulating evidence that granulocyte colony-stimulating factor (G-CSF), the key hematopoietic growth factor of the myeloid lineage, not only represents a major component of the endogenous response to infections, but also affects adaptive immune responses, prompted us to investigate the therapeutic potential of G-CSF in autoimmune type 1 diabetes.
4142 15616013 G-CSF recipients further displayed accumulation of functional CD4(+)CD25(+) regulatory T-cells that produce transforming growth factor-beta1 (TGF-beta1) and actively suppressed diabetes transfer by diabetogenic effector cells in secondary NOD-SCID recipients.
4143 15616013 G-CSF's ability to promote key tolerogenic interactions between DCs and regulatory T-cells was demonstrated by enhanced recruitment of TGF-beta1-expressing CD4(+)CD25(+) cells after adoptive transfer of DCs isolated from G-CSF- relative to vehicle-treated mice into naive NOD recipients.
4144 15616013 Treatment with granulocyte colony-stimulating factor prevents diabetes in NOD mice by recruiting plasmacytoid dendritic cells and functional CD4(+)CD25(+) regulatory T-cells.
4145 15616013 Accumulating evidence that granulocyte colony-stimulating factor (G-CSF), the key hematopoietic growth factor of the myeloid lineage, not only represents a major component of the endogenous response to infections, but also affects adaptive immune responses, prompted us to investigate the therapeutic potential of G-CSF in autoimmune type 1 diabetes.
4146 15616013 G-CSF recipients further displayed accumulation of functional CD4(+)CD25(+) regulatory T-cells that produce transforming growth factor-beta1 (TGF-beta1) and actively suppressed diabetes transfer by diabetogenic effector cells in secondary NOD-SCID recipients.
4147 15616013 G-CSF's ability to promote key tolerogenic interactions between DCs and regulatory T-cells was demonstrated by enhanced recruitment of TGF-beta1-expressing CD4(+)CD25(+) cells after adoptive transfer of DCs isolated from G-CSF- relative to vehicle-treated mice into naive NOD recipients.
4148 15616015 Defective suppressor function in CD4(+)CD25(+) T-cells from patients with type 1 diabetes.
4149 15616015 The mechanisms involved in maintenance of peripheral tolerance include a specialized subset of regulatory T-cells (Treg) within the CD4(+)CD25(+) T-cell population, but the function and phenotype of these cells in type 1 diabetes have not been investigated.
4150 15616015 We hypothesized that a deficiency in the CD4(+)CD25(+) Treg population or its function could contribute to the lack of self-tolerance evident in patients with type 1 diabetes.
4151 15616015 We show that although levels of CD4(+)CD25(+) T-cells are normal in patients with recent-onset adult type 1 diabetes, the ability of the Tregs in this population to suppress T-cell proliferation during in vitro cocultures is markedly reduced compared with control subjects (P = 0.007).
4152 15616015 Moreover, in patients with type 1 diabetes, these cocultures display a more proinflammatory phenotype, with increased secretion of interferon-gamma (P = 0.005) and decreased interleukin-10 production (P = 0.03).
4153 15616015 These deficiencies may reflect a disturbance in the balance of the CD4(+)CD25(+) population, because in patients with type 1 diabetes, a higher proportion of these cells coexpress the early activation marker CD69 (P = 0.007) and intracellular CTLA-4 (P = 0.01).
4154 15616015 These data demonstrate deficiency in function of the CD4(+)CD25(+) Treg population that may influence the pathogenesis of type 1 diabetes.
4155 15616015 Defective suppressor function in CD4(+)CD25(+) T-cells from patients with type 1 diabetes.
4156 15616015 The mechanisms involved in maintenance of peripheral tolerance include a specialized subset of regulatory T-cells (Treg) within the CD4(+)CD25(+) T-cell population, but the function and phenotype of these cells in type 1 diabetes have not been investigated.
4157 15616015 We hypothesized that a deficiency in the CD4(+)CD25(+) Treg population or its function could contribute to the lack of self-tolerance evident in patients with type 1 diabetes.
4158 15616015 We show that although levels of CD4(+)CD25(+) T-cells are normal in patients with recent-onset adult type 1 diabetes, the ability of the Tregs in this population to suppress T-cell proliferation during in vitro cocultures is markedly reduced compared with control subjects (P = 0.007).
4159 15616015 Moreover, in patients with type 1 diabetes, these cocultures display a more proinflammatory phenotype, with increased secretion of interferon-gamma (P = 0.005) and decreased interleukin-10 production (P = 0.03).
4160 15616015 These deficiencies may reflect a disturbance in the balance of the CD4(+)CD25(+) population, because in patients with type 1 diabetes, a higher proportion of these cells coexpress the early activation marker CD69 (P = 0.007) and intracellular CTLA-4 (P = 0.01).
4161 15616015 These data demonstrate deficiency in function of the CD4(+)CD25(+) Treg population that may influence the pathogenesis of type 1 diabetes.
4162 15616015 Defective suppressor function in CD4(+)CD25(+) T-cells from patients with type 1 diabetes.
4163 15616015 The mechanisms involved in maintenance of peripheral tolerance include a specialized subset of regulatory T-cells (Treg) within the CD4(+)CD25(+) T-cell population, but the function and phenotype of these cells in type 1 diabetes have not been investigated.
4164 15616015 We hypothesized that a deficiency in the CD4(+)CD25(+) Treg population or its function could contribute to the lack of self-tolerance evident in patients with type 1 diabetes.
4165 15616015 We show that although levels of CD4(+)CD25(+) T-cells are normal in patients with recent-onset adult type 1 diabetes, the ability of the Tregs in this population to suppress T-cell proliferation during in vitro cocultures is markedly reduced compared with control subjects (P = 0.007).
4166 15616015 Moreover, in patients with type 1 diabetes, these cocultures display a more proinflammatory phenotype, with increased secretion of interferon-gamma (P = 0.005) and decreased interleukin-10 production (P = 0.03).
4167 15616015 These deficiencies may reflect a disturbance in the balance of the CD4(+)CD25(+) population, because in patients with type 1 diabetes, a higher proportion of these cells coexpress the early activation marker CD69 (P = 0.007) and intracellular CTLA-4 (P = 0.01).
4168 15616015 These data demonstrate deficiency in function of the CD4(+)CD25(+) Treg population that may influence the pathogenesis of type 1 diabetes.
4169 15616015 Defective suppressor function in CD4(+)CD25(+) T-cells from patients with type 1 diabetes.
4170 15616015 The mechanisms involved in maintenance of peripheral tolerance include a specialized subset of regulatory T-cells (Treg) within the CD4(+)CD25(+) T-cell population, but the function and phenotype of these cells in type 1 diabetes have not been investigated.
4171 15616015 We hypothesized that a deficiency in the CD4(+)CD25(+) Treg population or its function could contribute to the lack of self-tolerance evident in patients with type 1 diabetes.
4172 15616015 We show that although levels of CD4(+)CD25(+) T-cells are normal in patients with recent-onset adult type 1 diabetes, the ability of the Tregs in this population to suppress T-cell proliferation during in vitro cocultures is markedly reduced compared with control subjects (P = 0.007).
4173 15616015 Moreover, in patients with type 1 diabetes, these cocultures display a more proinflammatory phenotype, with increased secretion of interferon-gamma (P = 0.005) and decreased interleukin-10 production (P = 0.03).
4174 15616015 These deficiencies may reflect a disturbance in the balance of the CD4(+)CD25(+) population, because in patients with type 1 diabetes, a higher proportion of these cells coexpress the early activation marker CD69 (P = 0.007) and intracellular CTLA-4 (P = 0.01).
4175 15616015 These data demonstrate deficiency in function of the CD4(+)CD25(+) Treg population that may influence the pathogenesis of type 1 diabetes.
4176 15616015 Defective suppressor function in CD4(+)CD25(+) T-cells from patients with type 1 diabetes.
4177 15616015 The mechanisms involved in maintenance of peripheral tolerance include a specialized subset of regulatory T-cells (Treg) within the CD4(+)CD25(+) T-cell population, but the function and phenotype of these cells in type 1 diabetes have not been investigated.
4178 15616015 We hypothesized that a deficiency in the CD4(+)CD25(+) Treg population or its function could contribute to the lack of self-tolerance evident in patients with type 1 diabetes.
4179 15616015 We show that although levels of CD4(+)CD25(+) T-cells are normal in patients with recent-onset adult type 1 diabetes, the ability of the Tregs in this population to suppress T-cell proliferation during in vitro cocultures is markedly reduced compared with control subjects (P = 0.007).
4180 15616015 Moreover, in patients with type 1 diabetes, these cocultures display a more proinflammatory phenotype, with increased secretion of interferon-gamma (P = 0.005) and decreased interleukin-10 production (P = 0.03).
4181 15616015 These deficiencies may reflect a disturbance in the balance of the CD4(+)CD25(+) population, because in patients with type 1 diabetes, a higher proportion of these cells coexpress the early activation marker CD69 (P = 0.007) and intracellular CTLA-4 (P = 0.01).
4182 15616015 These data demonstrate deficiency in function of the CD4(+)CD25(+) Treg population that may influence the pathogenesis of type 1 diabetes.
4183 15616015 Defective suppressor function in CD4(+)CD25(+) T-cells from patients with type 1 diabetes.
4184 15616015 The mechanisms involved in maintenance of peripheral tolerance include a specialized subset of regulatory T-cells (Treg) within the CD4(+)CD25(+) T-cell population, but the function and phenotype of these cells in type 1 diabetes have not been investigated.
4185 15616015 We hypothesized that a deficiency in the CD4(+)CD25(+) Treg population or its function could contribute to the lack of self-tolerance evident in patients with type 1 diabetes.
4186 15616015 We show that although levels of CD4(+)CD25(+) T-cells are normal in patients with recent-onset adult type 1 diabetes, the ability of the Tregs in this population to suppress T-cell proliferation during in vitro cocultures is markedly reduced compared with control subjects (P = 0.007).
4187 15616015 Moreover, in patients with type 1 diabetes, these cocultures display a more proinflammatory phenotype, with increased secretion of interferon-gamma (P = 0.005) and decreased interleukin-10 production (P = 0.03).
4188 15616015 These deficiencies may reflect a disturbance in the balance of the CD4(+)CD25(+) population, because in patients with type 1 diabetes, a higher proportion of these cells coexpress the early activation marker CD69 (P = 0.007) and intracellular CTLA-4 (P = 0.01).
4189 15616015 These data demonstrate deficiency in function of the CD4(+)CD25(+) Treg population that may influence the pathogenesis of type 1 diabetes.
4190 15622961 It is clear that beta cell destruction is mediated primarily byT cells with both CD4+ and CD8+ T cells playing an important role.
4191 15624122 Increased levels of SST were also found in antigen-presenting cells and are associated with a significant increase of CD8 expression levels on CD4(+)/CD8(+) immature thymocytes.
4192 15634886 An age-dependent differential expression of B7-1 and B7-2 was associated with the development of insulitis and CD4(+)CD25(+) T cell deficiency in autoimmune disease-prone mice.
4193 15634886 Whereas BCR and LPS stimulation increased B7-2 expression on B cells from autoimmune disease-prone and nonautoimmune disease-prone mice, LPS-induced B7-1 expression was higher on NOD than C57BL/6 B cells.
4194 15634886 B7 blockade of BCR-stimulated NOD B cells by anti-B7-1 and anti-B7-2 mAbs during coadoptive transfer with diabetogenic T cells into NOD.scid mice protected these recipients from T1D.
4195 15650365 This revealed an association between peripheral blood cell numbers of specific lymphocyte subpopulations (CD4(+), CD3(+)CD25(+), and naïve T-cells) and serum levels of markers for AITD (free thyroxine [T(4)] and thyroid-stimulating immunoglobulin).
4196 15667574 Aberrant regulation of interleukin-12 receptor beta2 chain on type 1 cytokine-stimulated T lymphocytes in type 1 diabetes.
4197 15667574 We studied, in T1D, type 1 and 2 cytokine-induced expression of the interleukin-12 receptor beta2 chain (IL-12Rbeta2 chain), which plays a critical role in regulating T-cell polarization.
4198 15667574 Peripheral blood lymphocytes from children with newly diagnosed T1D (n=10; mean age 10 years), from children with longstanding T1D (n=8; mean age 12.9 years) and from healthy children (n=15; mean age 11.5 years) were stimulated with phytohaemagglutinin (PHA) in a type 1 (IL-12 and anti-IL-4) or a type 2 (IL-4 and anti-IL-12) cytokine environment.
4199 15667574 Secretion of interferon-gamma (IFN-gamma), IL-5 and IL-13, as detected by enzyme-linked immunosorbent assay (ELISA), and expression of the IL-12Rbeta2 chain on CD4 and CD8 cells by flow cytometry, were analysed.
4200 15667574 Children with newly diagnosed and longstanding T1D had lower expression levels of the IL-12Rbeta2 chain on IL-12Rbeta2 chain-positive CD4 T cells (for a type 1 or a type 2 cytokine environment: P=0.01 and P=0.002 or P=0.02 and P=0.01, respectively) and on IL-12Rbeta2 chain-positive CD8 T cells (for a type 1 or a type 2 cytokine environment: P=0.007 and P=0.0007 or P=0.003 and P=0.01, respectively) when compared to healthy children.
4201 15667574 A decreased percentage of IL-12Rbeta2 chain-expressing CD4 T cells (P=0.07 and P=0.03) and CD8 T cells (P=0.004 and P=0.01) and increased secretion of IL-13 (P=0.006 and P=0.04) in a type 1 cytokine environment was seen in both groups of patients.
4202 15667574 Aberrant regulation of interleukin-12 receptor beta2 chain on type 1 cytokine-stimulated T lymphocytes in type 1 diabetes.
4203 15667574 We studied, in T1D, type 1 and 2 cytokine-induced expression of the interleukin-12 receptor beta2 chain (IL-12Rbeta2 chain), which plays a critical role in regulating T-cell polarization.
4204 15667574 Peripheral blood lymphocytes from children with newly diagnosed T1D (n=10; mean age 10 years), from children with longstanding T1D (n=8; mean age 12.9 years) and from healthy children (n=15; mean age 11.5 years) were stimulated with phytohaemagglutinin (PHA) in a type 1 (IL-12 and anti-IL-4) or a type 2 (IL-4 and anti-IL-12) cytokine environment.
4205 15667574 Secretion of interferon-gamma (IFN-gamma), IL-5 and IL-13, as detected by enzyme-linked immunosorbent assay (ELISA), and expression of the IL-12Rbeta2 chain on CD4 and CD8 cells by flow cytometry, were analysed.
4206 15667574 Children with newly diagnosed and longstanding T1D had lower expression levels of the IL-12Rbeta2 chain on IL-12Rbeta2 chain-positive CD4 T cells (for a type 1 or a type 2 cytokine environment: P=0.01 and P=0.002 or P=0.02 and P=0.01, respectively) and on IL-12Rbeta2 chain-positive CD8 T cells (for a type 1 or a type 2 cytokine environment: P=0.007 and P=0.0007 or P=0.003 and P=0.01, respectively) when compared to healthy children.
4207 15667574 A decreased percentage of IL-12Rbeta2 chain-expressing CD4 T cells (P=0.07 and P=0.03) and CD8 T cells (P=0.004 and P=0.01) and increased secretion of IL-13 (P=0.006 and P=0.04) in a type 1 cytokine environment was seen in both groups of patients.
4208 15667574 Aberrant regulation of interleukin-12 receptor beta2 chain on type 1 cytokine-stimulated T lymphocytes in type 1 diabetes.
4209 15667574 We studied, in T1D, type 1 and 2 cytokine-induced expression of the interleukin-12 receptor beta2 chain (IL-12Rbeta2 chain), which plays a critical role in regulating T-cell polarization.
4210 15667574 Peripheral blood lymphocytes from children with newly diagnosed T1D (n=10; mean age 10 years), from children with longstanding T1D (n=8; mean age 12.9 years) and from healthy children (n=15; mean age 11.5 years) were stimulated with phytohaemagglutinin (PHA) in a type 1 (IL-12 and anti-IL-4) or a type 2 (IL-4 and anti-IL-12) cytokine environment.
4211 15667574 Secretion of interferon-gamma (IFN-gamma), IL-5 and IL-13, as detected by enzyme-linked immunosorbent assay (ELISA), and expression of the IL-12Rbeta2 chain on CD4 and CD8 cells by flow cytometry, were analysed.
4212 15667574 Children with newly diagnosed and longstanding T1D had lower expression levels of the IL-12Rbeta2 chain on IL-12Rbeta2 chain-positive CD4 T cells (for a type 1 or a type 2 cytokine environment: P=0.01 and P=0.002 or P=0.02 and P=0.01, respectively) and on IL-12Rbeta2 chain-positive CD8 T cells (for a type 1 or a type 2 cytokine environment: P=0.007 and P=0.0007 or P=0.003 and P=0.01, respectively) when compared to healthy children.
4213 15667574 A decreased percentage of IL-12Rbeta2 chain-expressing CD4 T cells (P=0.07 and P=0.03) and CD8 T cells (P=0.004 and P=0.01) and increased secretion of IL-13 (P=0.006 and P=0.04) in a type 1 cytokine environment was seen in both groups of patients.
4214 15699486 Based on these and other preclinical data, we have carried out a Phase I/II trial of the humanized FcR non-binding anti-CD3 mAb hOKT3gamma1(Ala-Ala) in patients with new-onset type 1 diabetes. mAb treatment prevented the loss of insulin production over the first two years of the disease with reduced hemoglobin A1c levels and insulin usage.
4215 15699486 CD4(+)IL-10(+) T cells can be found in patients after treatment; in addition, the CD8(+) T cells are induced by the mAb, and these cells may regulate antigen- specific responses.
4216 15699488 CD4+ T cell proliferation in response to GAD and proinsulin in healthy, pre-diabetic, and diabetic donors.
4217 15699488 However, peripheral blood cells from healthy, pre-diabetic and diabetic donors exhibited overlap in responses to glutamic acid decarboxylase (GAD65) and proinsulin (PI).
4218 15699491 In each HLA type group, GAD-reactive IFN-gamma-producing CD4(+) cells were assessed by means of intracellular cytokine staining for flow cytometry.
4219 15699491 Type 1 diabetic patients with HLA DR9/X had significantly higher numbers of GAD-reactive IFN-gamma-producing CD4(+) cells as compared to type 1 diabetic patients with DR4/X or DR4/9 (P < 0.05) and all type 2 diabetic patients.
4220 15699491 There was no significant difference in the number of GAD-reactive IFN-gamma-producing CD4(+) cells between type 1 diabetic and type 2 diabetic patients belonging to the DR4/X and DR4/9 groups.
4221 15699491 In each HLA type group, GAD-reactive IFN-gamma-producing CD4(+) cells were assessed by means of intracellular cytokine staining for flow cytometry.
4222 15699491 Type 1 diabetic patients with HLA DR9/X had significantly higher numbers of GAD-reactive IFN-gamma-producing CD4(+) cells as compared to type 1 diabetic patients with DR4/X or DR4/9 (P < 0.05) and all type 2 diabetic patients.
4223 15699491 There was no significant difference in the number of GAD-reactive IFN-gamma-producing CD4(+) cells between type 1 diabetic and type 2 diabetic patients belonging to the DR4/X and DR4/9 groups.
4224 15699491 In each HLA type group, GAD-reactive IFN-gamma-producing CD4(+) cells were assessed by means of intracellular cytokine staining for flow cytometry.
4225 15699491 Type 1 diabetic patients with HLA DR9/X had significantly higher numbers of GAD-reactive IFN-gamma-producing CD4(+) cells as compared to type 1 diabetic patients with DR4/X or DR4/9 (P < 0.05) and all type 2 diabetic patients.
4226 15699491 There was no significant difference in the number of GAD-reactive IFN-gamma-producing CD4(+) cells between type 1 diabetic and type 2 diabetic patients belonging to the DR4/X and DR4/9 groups.
4227 15699519 Based on these findings we have developed experimental autoimmune diabetes (EAD), a new mouse model characterized by (1) CD4(+)/CD8(+) insulitis, induced by (2) (prepro)insulin DNA vaccination, leading to (3) beta cell damage and insulin deficiency in (4) RIP-B7.1 transgenic mice (H-2(b)).
4228 15707400 Naive T cells and T cells with potential regulatory function (CD4+CD25+) were not prevalent following aggressive depletion.
4229 15724624 The patients felt better, their quality of life improved, CD3+, CD4+, CD5+ cells and granule-contained lymphocytes content normalized.
4230 15725572 We found that immature NOD CD4+CD8+ DP thymocytes have a lower activation threshold than C57BL/6 and Balb/c thymocytes.
4231 15725572 This was confirmed by showing that NOD DP thymocytes have a higher level of ERK and JNK phosphorylation.
4232 15725577 In mouse models, CD4+CD25+ T cells are involved in maintenance of peripheral tolerance.
4233 15725577 In humans, a subset of CD4+CD25+ T cells expressing high levels of CD25 (CD4+CD25high) with characteristics identical to murine CD4+CD25+ was recently described.
4234 15725577 In contrast to a previous report, we found no difference in the number of CD4+CD25high and CD4+CD25+ T cells between T1D and NC.
4235 15725577 In mouse models, CD4+CD25+ T cells are involved in maintenance of peripheral tolerance.
4236 15725577 In humans, a subset of CD4+CD25+ T cells expressing high levels of CD25 (CD4+CD25high) with characteristics identical to murine CD4+CD25+ was recently described.
4237 15725577 In contrast to a previous report, we found no difference in the number of CD4+CD25high and CD4+CD25+ T cells between T1D and NC.
4238 15725577 In mouse models, CD4+CD25+ T cells are involved in maintenance of peripheral tolerance.
4239 15725577 In humans, a subset of CD4+CD25+ T cells expressing high levels of CD25 (CD4+CD25high) with characteristics identical to murine CD4+CD25+ was recently described.
4240 15725577 In contrast to a previous report, we found no difference in the number of CD4+CD25high and CD4+CD25+ T cells between T1D and NC.
4241 15753206 Homeostatic maintenance of natural Foxp3(+) CD25(+) CD4(+) regulatory T cells by interleukin (IL)-2 and induction of autoimmune disease by IL-2 neutralization.
4242 15753206 Such treatment selectively reduces the number of Foxp3-expressing CD25(+) CD4(+) T cells, but not CD25(-) CD4(+) T cells, in the thymus and periphery of normal and thymectomized mice.
4243 15753206 IL-2 neutralization inhibits physiological proliferation of peripheral CD25(+) CD4(+) T cells that are presumably responding to normal self-antigens, whereas it is unable to inhibit their lymphopenia-induced homeostatic expansion in a T cell-deficient environment.
4244 15753206 In normal naive mice, CD25(low) CD4(+) nonregulatory T cells actively transcribe the IL-2 gene and secrete IL-2 protein in the physiological state.
4245 15753206 IL-2 is thus indispensable for the peripheral maintenance of natural CD25(+) CD4(+) regulatory T cells (T reg cells).
4246 15753206 The principal physiological source of IL-2 for the maintenance of T reg cells appears to be other T cells, especially CD25(low) CD4(+) activated T cells, which include self-reactive T cells.
4247 15753206 Homeostatic maintenance of natural Foxp3(+) CD25(+) CD4(+) regulatory T cells by interleukin (IL)-2 and induction of autoimmune disease by IL-2 neutralization.
4248 15753206 Such treatment selectively reduces the number of Foxp3-expressing CD25(+) CD4(+) T cells, but not CD25(-) CD4(+) T cells, in the thymus and periphery of normal and thymectomized mice.
4249 15753206 IL-2 neutralization inhibits physiological proliferation of peripheral CD25(+) CD4(+) T cells that are presumably responding to normal self-antigens, whereas it is unable to inhibit their lymphopenia-induced homeostatic expansion in a T cell-deficient environment.
4250 15753206 In normal naive mice, CD25(low) CD4(+) nonregulatory T cells actively transcribe the IL-2 gene and secrete IL-2 protein in the physiological state.
4251 15753206 IL-2 is thus indispensable for the peripheral maintenance of natural CD25(+) CD4(+) regulatory T cells (T reg cells).
4252 15753206 The principal physiological source of IL-2 for the maintenance of T reg cells appears to be other T cells, especially CD25(low) CD4(+) activated T cells, which include self-reactive T cells.
4253 15753206 Homeostatic maintenance of natural Foxp3(+) CD25(+) CD4(+) regulatory T cells by interleukin (IL)-2 and induction of autoimmune disease by IL-2 neutralization.
4254 15753206 Such treatment selectively reduces the number of Foxp3-expressing CD25(+) CD4(+) T cells, but not CD25(-) CD4(+) T cells, in the thymus and periphery of normal and thymectomized mice.
4255 15753206 IL-2 neutralization inhibits physiological proliferation of peripheral CD25(+) CD4(+) T cells that are presumably responding to normal self-antigens, whereas it is unable to inhibit their lymphopenia-induced homeostatic expansion in a T cell-deficient environment.
4256 15753206 In normal naive mice, CD25(low) CD4(+) nonregulatory T cells actively transcribe the IL-2 gene and secrete IL-2 protein in the physiological state.
4257 15753206 IL-2 is thus indispensable for the peripheral maintenance of natural CD25(+) CD4(+) regulatory T cells (T reg cells).
4258 15753206 The principal physiological source of IL-2 for the maintenance of T reg cells appears to be other T cells, especially CD25(low) CD4(+) activated T cells, which include self-reactive T cells.
4259 15753206 Homeostatic maintenance of natural Foxp3(+) CD25(+) CD4(+) regulatory T cells by interleukin (IL)-2 and induction of autoimmune disease by IL-2 neutralization.
4260 15753206 Such treatment selectively reduces the number of Foxp3-expressing CD25(+) CD4(+) T cells, but not CD25(-) CD4(+) T cells, in the thymus and periphery of normal and thymectomized mice.
4261 15753206 IL-2 neutralization inhibits physiological proliferation of peripheral CD25(+) CD4(+) T cells that are presumably responding to normal self-antigens, whereas it is unable to inhibit their lymphopenia-induced homeostatic expansion in a T cell-deficient environment.
4262 15753206 In normal naive mice, CD25(low) CD4(+) nonregulatory T cells actively transcribe the IL-2 gene and secrete IL-2 protein in the physiological state.
4263 15753206 IL-2 is thus indispensable for the peripheral maintenance of natural CD25(+) CD4(+) regulatory T cells (T reg cells).
4264 15753206 The principal physiological source of IL-2 for the maintenance of T reg cells appears to be other T cells, especially CD25(low) CD4(+) activated T cells, which include self-reactive T cells.
4265 15753206 Homeostatic maintenance of natural Foxp3(+) CD25(+) CD4(+) regulatory T cells by interleukin (IL)-2 and induction of autoimmune disease by IL-2 neutralization.
4266 15753206 Such treatment selectively reduces the number of Foxp3-expressing CD25(+) CD4(+) T cells, but not CD25(-) CD4(+) T cells, in the thymus and periphery of normal and thymectomized mice.
4267 15753206 IL-2 neutralization inhibits physiological proliferation of peripheral CD25(+) CD4(+) T cells that are presumably responding to normal self-antigens, whereas it is unable to inhibit their lymphopenia-induced homeostatic expansion in a T cell-deficient environment.
4268 15753206 In normal naive mice, CD25(low) CD4(+) nonregulatory T cells actively transcribe the IL-2 gene and secrete IL-2 protein in the physiological state.
4269 15753206 IL-2 is thus indispensable for the peripheral maintenance of natural CD25(+) CD4(+) regulatory T cells (T reg cells).
4270 15753206 The principal physiological source of IL-2 for the maintenance of T reg cells appears to be other T cells, especially CD25(low) CD4(+) activated T cells, which include self-reactive T cells.
4271 15753206 Homeostatic maintenance of natural Foxp3(+) CD25(+) CD4(+) regulatory T cells by interleukin (IL)-2 and induction of autoimmune disease by IL-2 neutralization.
4272 15753206 Such treatment selectively reduces the number of Foxp3-expressing CD25(+) CD4(+) T cells, but not CD25(-) CD4(+) T cells, in the thymus and periphery of normal and thymectomized mice.
4273 15753206 IL-2 neutralization inhibits physiological proliferation of peripheral CD25(+) CD4(+) T cells that are presumably responding to normal self-antigens, whereas it is unable to inhibit their lymphopenia-induced homeostatic expansion in a T cell-deficient environment.
4274 15753206 In normal naive mice, CD25(low) CD4(+) nonregulatory T cells actively transcribe the IL-2 gene and secrete IL-2 protein in the physiological state.
4275 15753206 IL-2 is thus indispensable for the peripheral maintenance of natural CD25(+) CD4(+) regulatory T cells (T reg cells).
4276 15753206 The principal physiological source of IL-2 for the maintenance of T reg cells appears to be other T cells, especially CD25(low) CD4(+) activated T cells, which include self-reactive T cells.
4277 15753318 De novo generation of antigen-specific CD4+CD25+ regulatory T cells from human CD4+CD25- cells.
4278 15753318 CD4+CD25+FOXP3+ regulatory T cells (T(R)) also require activation through the T cell receptor for function.
4279 15753318 De novo generation of antigen-specific CD4+CD25+ regulatory T cells from human CD4+CD25- cells.
4280 15753318 CD4+CD25+FOXP3+ regulatory T cells (T(R)) also require activation through the T cell receptor for function.
4281 15753402 Although nonresponsive toward the HPV16 E7 oncoprotein in the CD8+ T-cell compartment by virtue of MHC haplotype, the mice were capable of mounting an induced CD4+ T-cell response against E7, and in addition developed spontaneous anti-E7 antibodies.
4282 15763918 Selection of aberrant class II restricted CD8+ T cells in NOD mice expressing a glutamic acid decarboxylase (GAD)65-specific T cell receptor transgene.
4283 15763918 Interestingly, the CD8+ tetramer(-) T cells that are expressing endogenous TCR can delay diabetes induction in a transfer model, as we previously showed for CD4+ tetramer+ T cells in these mice.
4284 15763918 The MHC mismatched CD8+ cells appear to be positively selected in an atypical fashion, in that they do not upregulate CD69 or reexpress CD44, and they escape negative selection.
4285 15771578 The strength of this mouse strain is that it develops spontaneous autoimmune diabetes, which shares many similarities to autoimmune or type 1a diabetes (T1D) in human subjects, including the presence of pancreas-specific autoantibodies, autoreactive CD4+ and CD8+ T cells, and genetic linkage to disease syntenic to that found in humans.
4286 15778350 Simultaneous induction of CD4 T cell tolerance and CD8 T cell immunity by semimature dendritic cells.
4287 15778350 This protection was mediated by IL-10-producing CD4 T cells specific for the self Ag.
4288 15778350 Double-peptide-loaded semimature DC also induced simultaneously in the same animal partially activated CD8 T cells with cytolytic function as well as protection from MOG-induced autoimmune encephalomyelitis.
4289 15778350 Simultaneous induction of CD4 T cell tolerance and CD8 T cell immunity by semimature dendritic cells.
4290 15778350 This protection was mediated by IL-10-producing CD4 T cells specific for the self Ag.
4291 15778350 Double-peptide-loaded semimature DC also induced simultaneously in the same animal partially activated CD8 T cells with cytolytic function as well as protection from MOG-induced autoimmune encephalomyelitis.
4292 15789355 CD4(+)CD25(+)) were induced.
4293 15790360 A search for peripheral T cells that might exert dominant inhibitory effects on autoreactivity has implicated a subpopulation of CD4(+)CD25(+) T cells called regulatory T cells (Tregs).
4294 15790360 We restrict our comments to the suppression mediated by cells within the CD4 lineage; the impact of the cells within the CD8 lineage that may suppress via engagement of Qa-1 on effector T cells is not addressed in this review.
4295 15790360 A search for peripheral T cells that might exert dominant inhibitory effects on autoreactivity has implicated a subpopulation of CD4(+)CD25(+) T cells called regulatory T cells (Tregs).
4296 15790360 We restrict our comments to the suppression mediated by cells within the CD4 lineage; the impact of the cells within the CD8 lineage that may suppress via engagement of Qa-1 on effector T cells is not addressed in this review.
4297 15790363 Both the CD4(+) and the CD8(+) T-cell subsets are required for T1D development.
4298 15790363 This finding led to enormous interest in the CD4(+) T cells participating in the development of T1D, while the CD8(+) subset was relatively ignored.
4299 15790363 However, the isolation of beta-cell-autoreactive CD8(+) T-cell clones from the islets of NOD mice helped to generate interest in the pathogenic role of this subset, as has accumulating evidence that certain class I MHC alleles are additional risk factors for T1D development in humans.
4300 15790363 Both the CD4(+) and the CD8(+) T-cell subsets are required for T1D development.
4301 15790363 This finding led to enormous interest in the CD4(+) T cells participating in the development of T1D, while the CD8(+) subset was relatively ignored.
4302 15790363 However, the isolation of beta-cell-autoreactive CD8(+) T-cell clones from the islets of NOD mice helped to generate interest in the pathogenic role of this subset, as has accumulating evidence that certain class I MHC alleles are additional risk factors for T1D development in humans.
4303 15806729 Early studies suggested that CD8(+) "suppressor" T cells were important, but it is now accepted that it may involve either anergy/deletion of CD4(+) T cells, or the induction of regulatory CD4(+) T cells that produce IL-10 and/or TGFbeta.
4304 15806729 There may also be a role for CD4(+) CD25(+) T(reg), but how and when all these different mechanisms operate is still unclear.
4305 15806729 Early studies suggested that CD8(+) "suppressor" T cells were important, but it is now accepted that it may involve either anergy/deletion of CD4(+) T cells, or the induction of regulatory CD4(+) T cells that produce IL-10 and/or TGFbeta.
4306 15806729 There may also be a role for CD4(+) CD25(+) T(reg), but how and when all these different mechanisms operate is still unclear.
4307 15816002 Our data show that human NKT cells also undergo early stages of development in the thymus, forming a CD4(+)CD161(-/low) population that predominates neonatal thymic and blood NKT cell pools.
4308 15816002 CD4(-) and CD161(+) NKT cells accumulate with age in the blood, but not thymus, to the point that they dominate the NKT cell compartment in adult blood.
4309 15816002 This is consistent with the post-thymic maturation of NKT cells exported from the thymus at the putatively immature CD4(+)CD161(-/low) stage.
4310 15816002 Our data show that human NKT cells also undergo early stages of development in the thymus, forming a CD4(+)CD161(-/low) population that predominates neonatal thymic and blood NKT cell pools.
4311 15816002 CD4(-) and CD161(+) NKT cells accumulate with age in the blood, but not thymus, to the point that they dominate the NKT cell compartment in adult blood.
4312 15816002 This is consistent with the post-thymic maturation of NKT cells exported from the thymus at the putatively immature CD4(+)CD161(-/low) stage.
4313 15816002 Our data show that human NKT cells also undergo early stages of development in the thymus, forming a CD4(+)CD161(-/low) population that predominates neonatal thymic and blood NKT cell pools.
4314 15816002 CD4(-) and CD161(+) NKT cells accumulate with age in the blood, but not thymus, to the point that they dominate the NKT cell compartment in adult blood.
4315 15816002 This is consistent with the post-thymic maturation of NKT cells exported from the thymus at the putatively immature CD4(+)CD161(-/low) stage.
4316 15829405 It selectively prevented the loss of the immunoregulatory T cells expressing the CD4(+)CD25+ phenotype that also stained CD62L+ in peripancreatic lymph nodes and promoted their expansion in the spleen.
4317 15837817 Single cell analysis shows decreasing FoxP3 and TGFbeta1 coexpressing CD4+CD25+ regulatory T cells during autoimmune diabetes.
4318 15837817 Natural CD4(+)CD25(+) regulatory T (CD4(+)CD25(+) T reg) cells play a key role in the immunoregulation of autoimmunity.
4319 15837817 However, little is known about the interactions between CD4(+)CD25(+) T reg cells and autoreactive T cells.
4320 15837817 This is due, in part, to the difficulty of using cell surface markers to identify CD4(+)CD25(+) T reg cells accurately.
4321 15837817 Using a novel real-time PCR assay, mRNA copy number of FoxP3, TGFbeta1, and interleukin (IL)-10 was measured in single cells to characterize and quantify CD4(+)CD25(+) T reg cells in the nonobese diabetic (NOD) mouse, a murine model for type 1 diabetes (T1D).
4322 15837817 The suppressor function of CD4(+)CD25(+)CD62L(hi) T cells, mediated by TGFbeta, declined in an age-dependent manner.
4323 15837817 This loss of function coincided with a temporal decrease in the percentage of FoxP3 and TGFbeta1 coexpressing T cells within pancreatic lymph node and islet infiltrating CD4(+)CD25(+)CD62L(hi) T cells, and was detected in female NOD mice but not in NOD male mice, or NOR or C57BL/6 female mice.
4324 15837817 These results demonstrate that the majority of FoxP3-positive CD4(+)CD25(+) T reg cells in NOD mice express TGFbeta1 but not IL-10, and that a defect in the maintenance and/or expansion of this pool of immunoregulatory effectors is associated with the progression of T1D.
4325 15837817 Single cell analysis shows decreasing FoxP3 and TGFbeta1 coexpressing CD4+CD25+ regulatory T cells during autoimmune diabetes.
4326 15837817 Natural CD4(+)CD25(+) regulatory T (CD4(+)CD25(+) T reg) cells play a key role in the immunoregulation of autoimmunity.
4327 15837817 However, little is known about the interactions between CD4(+)CD25(+) T reg cells and autoreactive T cells.
4328 15837817 This is due, in part, to the difficulty of using cell surface markers to identify CD4(+)CD25(+) T reg cells accurately.
4329 15837817 Using a novel real-time PCR assay, mRNA copy number of FoxP3, TGFbeta1, and interleukin (IL)-10 was measured in single cells to characterize and quantify CD4(+)CD25(+) T reg cells in the nonobese diabetic (NOD) mouse, a murine model for type 1 diabetes (T1D).
4330 15837817 The suppressor function of CD4(+)CD25(+)CD62L(hi) T cells, mediated by TGFbeta, declined in an age-dependent manner.
4331 15837817 This loss of function coincided with a temporal decrease in the percentage of FoxP3 and TGFbeta1 coexpressing T cells within pancreatic lymph node and islet infiltrating CD4(+)CD25(+)CD62L(hi) T cells, and was detected in female NOD mice but not in NOD male mice, or NOR or C57BL/6 female mice.
4332 15837817 These results demonstrate that the majority of FoxP3-positive CD4(+)CD25(+) T reg cells in NOD mice express TGFbeta1 but not IL-10, and that a defect in the maintenance and/or expansion of this pool of immunoregulatory effectors is associated with the progression of T1D.
4333 15837817 Single cell analysis shows decreasing FoxP3 and TGFbeta1 coexpressing CD4+CD25+ regulatory T cells during autoimmune diabetes.
4334 15837817 Natural CD4(+)CD25(+) regulatory T (CD4(+)CD25(+) T reg) cells play a key role in the immunoregulation of autoimmunity.
4335 15837817 However, little is known about the interactions between CD4(+)CD25(+) T reg cells and autoreactive T cells.
4336 15837817 This is due, in part, to the difficulty of using cell surface markers to identify CD4(+)CD25(+) T reg cells accurately.
4337 15837817 Using a novel real-time PCR assay, mRNA copy number of FoxP3, TGFbeta1, and interleukin (IL)-10 was measured in single cells to characterize and quantify CD4(+)CD25(+) T reg cells in the nonobese diabetic (NOD) mouse, a murine model for type 1 diabetes (T1D).
4338 15837817 The suppressor function of CD4(+)CD25(+)CD62L(hi) T cells, mediated by TGFbeta, declined in an age-dependent manner.
4339 15837817 This loss of function coincided with a temporal decrease in the percentage of FoxP3 and TGFbeta1 coexpressing T cells within pancreatic lymph node and islet infiltrating CD4(+)CD25(+)CD62L(hi) T cells, and was detected in female NOD mice but not in NOD male mice, or NOR or C57BL/6 female mice.
4340 15837817 These results demonstrate that the majority of FoxP3-positive CD4(+)CD25(+) T reg cells in NOD mice express TGFbeta1 but not IL-10, and that a defect in the maintenance and/or expansion of this pool of immunoregulatory effectors is associated with the progression of T1D.
4341 15837817 Single cell analysis shows decreasing FoxP3 and TGFbeta1 coexpressing CD4+CD25+ regulatory T cells during autoimmune diabetes.
4342 15837817 Natural CD4(+)CD25(+) regulatory T (CD4(+)CD25(+) T reg) cells play a key role in the immunoregulation of autoimmunity.
4343 15837817 However, little is known about the interactions between CD4(+)CD25(+) T reg cells and autoreactive T cells.
4344 15837817 This is due, in part, to the difficulty of using cell surface markers to identify CD4(+)CD25(+) T reg cells accurately.
4345 15837817 Using a novel real-time PCR assay, mRNA copy number of FoxP3, TGFbeta1, and interleukin (IL)-10 was measured in single cells to characterize and quantify CD4(+)CD25(+) T reg cells in the nonobese diabetic (NOD) mouse, a murine model for type 1 diabetes (T1D).
4346 15837817 The suppressor function of CD4(+)CD25(+)CD62L(hi) T cells, mediated by TGFbeta, declined in an age-dependent manner.
4347 15837817 This loss of function coincided with a temporal decrease in the percentage of FoxP3 and TGFbeta1 coexpressing T cells within pancreatic lymph node and islet infiltrating CD4(+)CD25(+)CD62L(hi) T cells, and was detected in female NOD mice but not in NOD male mice, or NOR or C57BL/6 female mice.
4348 15837817 These results demonstrate that the majority of FoxP3-positive CD4(+)CD25(+) T reg cells in NOD mice express TGFbeta1 but not IL-10, and that a defect in the maintenance and/or expansion of this pool of immunoregulatory effectors is associated with the progression of T1D.
4349 15837817 Single cell analysis shows decreasing FoxP3 and TGFbeta1 coexpressing CD4+CD25+ regulatory T cells during autoimmune diabetes.
4350 15837817 Natural CD4(+)CD25(+) regulatory T (CD4(+)CD25(+) T reg) cells play a key role in the immunoregulation of autoimmunity.
4351 15837817 However, little is known about the interactions between CD4(+)CD25(+) T reg cells and autoreactive T cells.
4352 15837817 This is due, in part, to the difficulty of using cell surface markers to identify CD4(+)CD25(+) T reg cells accurately.
4353 15837817 Using a novel real-time PCR assay, mRNA copy number of FoxP3, TGFbeta1, and interleukin (IL)-10 was measured in single cells to characterize and quantify CD4(+)CD25(+) T reg cells in the nonobese diabetic (NOD) mouse, a murine model for type 1 diabetes (T1D).
4354 15837817 The suppressor function of CD4(+)CD25(+)CD62L(hi) T cells, mediated by TGFbeta, declined in an age-dependent manner.
4355 15837817 This loss of function coincided with a temporal decrease in the percentage of FoxP3 and TGFbeta1 coexpressing T cells within pancreatic lymph node and islet infiltrating CD4(+)CD25(+)CD62L(hi) T cells, and was detected in female NOD mice but not in NOD male mice, or NOR or C57BL/6 female mice.
4356 15837817 These results demonstrate that the majority of FoxP3-positive CD4(+)CD25(+) T reg cells in NOD mice express TGFbeta1 but not IL-10, and that a defect in the maintenance and/or expansion of this pool of immunoregulatory effectors is associated with the progression of T1D.
4357 15837817 Single cell analysis shows decreasing FoxP3 and TGFbeta1 coexpressing CD4+CD25+ regulatory T cells during autoimmune diabetes.
4358 15837817 Natural CD4(+)CD25(+) regulatory T (CD4(+)CD25(+) T reg) cells play a key role in the immunoregulation of autoimmunity.
4359 15837817 However, little is known about the interactions between CD4(+)CD25(+) T reg cells and autoreactive T cells.
4360 15837817 This is due, in part, to the difficulty of using cell surface markers to identify CD4(+)CD25(+) T reg cells accurately.
4361 15837817 Using a novel real-time PCR assay, mRNA copy number of FoxP3, TGFbeta1, and interleukin (IL)-10 was measured in single cells to characterize and quantify CD4(+)CD25(+) T reg cells in the nonobese diabetic (NOD) mouse, a murine model for type 1 diabetes (T1D).
4362 15837817 The suppressor function of CD4(+)CD25(+)CD62L(hi) T cells, mediated by TGFbeta, declined in an age-dependent manner.
4363 15837817 This loss of function coincided with a temporal decrease in the percentage of FoxP3 and TGFbeta1 coexpressing T cells within pancreatic lymph node and islet infiltrating CD4(+)CD25(+)CD62L(hi) T cells, and was detected in female NOD mice but not in NOD male mice, or NOR or C57BL/6 female mice.
4364 15837817 These results demonstrate that the majority of FoxP3-positive CD4(+)CD25(+) T reg cells in NOD mice express TGFbeta1 but not IL-10, and that a defect in the maintenance and/or expansion of this pool of immunoregulatory effectors is associated with the progression of T1D.
4365 15837817 Single cell analysis shows decreasing FoxP3 and TGFbeta1 coexpressing CD4+CD25+ regulatory T cells during autoimmune diabetes.
4366 15837817 Natural CD4(+)CD25(+) regulatory T (CD4(+)CD25(+) T reg) cells play a key role in the immunoregulation of autoimmunity.
4367 15837817 However, little is known about the interactions between CD4(+)CD25(+) T reg cells and autoreactive T cells.
4368 15837817 This is due, in part, to the difficulty of using cell surface markers to identify CD4(+)CD25(+) T reg cells accurately.
4369 15837817 Using a novel real-time PCR assay, mRNA copy number of FoxP3, TGFbeta1, and interleukin (IL)-10 was measured in single cells to characterize and quantify CD4(+)CD25(+) T reg cells in the nonobese diabetic (NOD) mouse, a murine model for type 1 diabetes (T1D).
4370 15837817 The suppressor function of CD4(+)CD25(+)CD62L(hi) T cells, mediated by TGFbeta, declined in an age-dependent manner.
4371 15837817 This loss of function coincided with a temporal decrease in the percentage of FoxP3 and TGFbeta1 coexpressing T cells within pancreatic lymph node and islet infiltrating CD4(+)CD25(+)CD62L(hi) T cells, and was detected in female NOD mice but not in NOD male mice, or NOR or C57BL/6 female mice.
4372 15837817 These results demonstrate that the majority of FoxP3-positive CD4(+)CD25(+) T reg cells in NOD mice express TGFbeta1 but not IL-10, and that a defect in the maintenance and/or expansion of this pool of immunoregulatory effectors is associated with the progression of T1D.
4373 15837817 Single cell analysis shows decreasing FoxP3 and TGFbeta1 coexpressing CD4+CD25+ regulatory T cells during autoimmune diabetes.
4374 15837817 Natural CD4(+)CD25(+) regulatory T (CD4(+)CD25(+) T reg) cells play a key role in the immunoregulation of autoimmunity.
4375 15837817 However, little is known about the interactions between CD4(+)CD25(+) T reg cells and autoreactive T cells.
4376 15837817 This is due, in part, to the difficulty of using cell surface markers to identify CD4(+)CD25(+) T reg cells accurately.
4377 15837817 Using a novel real-time PCR assay, mRNA copy number of FoxP3, TGFbeta1, and interleukin (IL)-10 was measured in single cells to characterize and quantify CD4(+)CD25(+) T reg cells in the nonobese diabetic (NOD) mouse, a murine model for type 1 diabetes (T1D).
4378 15837817 The suppressor function of CD4(+)CD25(+)CD62L(hi) T cells, mediated by TGFbeta, declined in an age-dependent manner.
4379 15837817 This loss of function coincided with a temporal decrease in the percentage of FoxP3 and TGFbeta1 coexpressing T cells within pancreatic lymph node and islet infiltrating CD4(+)CD25(+)CD62L(hi) T cells, and was detected in female NOD mice but not in NOD male mice, or NOR or C57BL/6 female mice.
4380 15837817 These results demonstrate that the majority of FoxP3-positive CD4(+)CD25(+) T reg cells in NOD mice express TGFbeta1 but not IL-10, and that a defect in the maintenance and/or expansion of this pool of immunoregulatory effectors is associated with the progression of T1D.
4381 15843527 Identification of CD4+ T cell-specific epitopes of islet-specific glucose-6-phosphatase catalytic subunit-related protein: a novel beta cell autoantigen in type 1 diabetes.
4382 15843527 Islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP) has been identified as a novel CD8(+) T cell-specific autoantigen in NOD mice.
4383 15843527 This study was undertaken to identify MHC class II-specific CD4(+) T cell epitopes of IGRP.
4384 15843527 Experiments using purified CD4(+) and CD8(+) T cells from IGRP peptide-primed mice also showed a predominant CD4(+) T cell response with no significant activation of CD8(+) T cells.
4385 15843527 T cells from P1-, P3-, and P7-primed mice secreted both IFN-gamma and IL-10 cytokines, whereas P2-primed cells secreted only IFN-gamma.
4386 15843527 In summary, we have identified two I-A(g7)-restricted CD4(+) T cell epitopes of IGRP that can modulate and prevent the development of diabetes in NOD mice.
4387 15843527 These results provide the first evidence on the role of IGRP-specific, MHC class II-restricted CD4(+) T cells in disease protection and may help in the development of novel therapies for type 1 diabetes.
4388 15843527 Identification of CD4+ T cell-specific epitopes of islet-specific glucose-6-phosphatase catalytic subunit-related protein: a novel beta cell autoantigen in type 1 diabetes.
4389 15843527 Islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP) has been identified as a novel CD8(+) T cell-specific autoantigen in NOD mice.
4390 15843527 This study was undertaken to identify MHC class II-specific CD4(+) T cell epitopes of IGRP.
4391 15843527 Experiments using purified CD4(+) and CD8(+) T cells from IGRP peptide-primed mice also showed a predominant CD4(+) T cell response with no significant activation of CD8(+) T cells.
4392 15843527 T cells from P1-, P3-, and P7-primed mice secreted both IFN-gamma and IL-10 cytokines, whereas P2-primed cells secreted only IFN-gamma.
4393 15843527 In summary, we have identified two I-A(g7)-restricted CD4(+) T cell epitopes of IGRP that can modulate and prevent the development of diabetes in NOD mice.
4394 15843527 These results provide the first evidence on the role of IGRP-specific, MHC class II-restricted CD4(+) T cells in disease protection and may help in the development of novel therapies for type 1 diabetes.
4395 15843527 Identification of CD4+ T cell-specific epitopes of islet-specific glucose-6-phosphatase catalytic subunit-related protein: a novel beta cell autoantigen in type 1 diabetes.
4396 15843527 Islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP) has been identified as a novel CD8(+) T cell-specific autoantigen in NOD mice.
4397 15843527 This study was undertaken to identify MHC class II-specific CD4(+) T cell epitopes of IGRP.
4398 15843527 Experiments using purified CD4(+) and CD8(+) T cells from IGRP peptide-primed mice also showed a predominant CD4(+) T cell response with no significant activation of CD8(+) T cells.
4399 15843527 T cells from P1-, P3-, and P7-primed mice secreted both IFN-gamma and IL-10 cytokines, whereas P2-primed cells secreted only IFN-gamma.
4400 15843527 In summary, we have identified two I-A(g7)-restricted CD4(+) T cell epitopes of IGRP that can modulate and prevent the development of diabetes in NOD mice.
4401 15843527 These results provide the first evidence on the role of IGRP-specific, MHC class II-restricted CD4(+) T cells in disease protection and may help in the development of novel therapies for type 1 diabetes.
4402 15843527 Identification of CD4+ T cell-specific epitopes of islet-specific glucose-6-phosphatase catalytic subunit-related protein: a novel beta cell autoantigen in type 1 diabetes.
4403 15843527 Islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP) has been identified as a novel CD8(+) T cell-specific autoantigen in NOD mice.
4404 15843527 This study was undertaken to identify MHC class II-specific CD4(+) T cell epitopes of IGRP.
4405 15843527 Experiments using purified CD4(+) and CD8(+) T cells from IGRP peptide-primed mice also showed a predominant CD4(+) T cell response with no significant activation of CD8(+) T cells.
4406 15843527 T cells from P1-, P3-, and P7-primed mice secreted both IFN-gamma and IL-10 cytokines, whereas P2-primed cells secreted only IFN-gamma.
4407 15843527 In summary, we have identified two I-A(g7)-restricted CD4(+) T cell epitopes of IGRP that can modulate and prevent the development of diabetes in NOD mice.
4408 15843527 These results provide the first evidence on the role of IGRP-specific, MHC class II-restricted CD4(+) T cells in disease protection and may help in the development of novel therapies for type 1 diabetes.
4409 15843527 Identification of CD4+ T cell-specific epitopes of islet-specific glucose-6-phosphatase catalytic subunit-related protein: a novel beta cell autoantigen in type 1 diabetes.
4410 15843527 Islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP) has been identified as a novel CD8(+) T cell-specific autoantigen in NOD mice.
4411 15843527 This study was undertaken to identify MHC class II-specific CD4(+) T cell epitopes of IGRP.
4412 15843527 Experiments using purified CD4(+) and CD8(+) T cells from IGRP peptide-primed mice also showed a predominant CD4(+) T cell response with no significant activation of CD8(+) T cells.
4413 15843527 T cells from P1-, P3-, and P7-primed mice secreted both IFN-gamma and IL-10 cytokines, whereas P2-primed cells secreted only IFN-gamma.
4414 15843527 In summary, we have identified two I-A(g7)-restricted CD4(+) T cell epitopes of IGRP that can modulate and prevent the development of diabetes in NOD mice.
4415 15843527 These results provide the first evidence on the role of IGRP-specific, MHC class II-restricted CD4(+) T cells in disease protection and may help in the development of novel therapies for type 1 diabetes.
4416 15847799 Media supplemented with IL-2+IL-4 supported growth of the largest number of antigen-specific clones.
4417 15847799 Based on these findings, IL-2+IL-4, anti-CD3 and round-bottom plates were used to clone FACS-sorted autoantigen-specific CFSE-labelled CD4+ T cells.
4418 15855327 Functional defects and the influence of age on the frequency of CD4+ CD25+ T-cells in type 1 diabetes.
4419 15855327 CD4+ CD25+ T-cells appear to play a crucial role in regulating the immune response.
4420 15855327 Therefore, we evaluated the peripheral blood frequency and function of CD4+ CD25+ T-cells in 70 type 1 diabetic patients and 37 healthy individuals.
4421 15855327 Interestingly, a positive correlation was observed between increasing age and CD4+ CD25+ T-cell frequency in both subject groups.
4422 15855327 In contrast to previous studies of nonobese diabetic mice and type 1 diabetic patients, similar frequencies of CD4+ CD25+ and CD4+ CD25(+Bright) T-cells were observed in healthy control subjects and type 1 diabetic patients of similar age.
4423 15855327 There was no difference between type 1 diabetic subjects of recent-onset versus those with established disease in terms of their CD4+ CD25+ or CD4+ CD25(+Bright) T-cell frequency.
4424 15855327 This type 1 diabetes-associated defect in suppression was associated with reduced production of interleukin (IL)-2, gamma-interferon, and transforming growth factor-beta, whereas other cytokines including those of adaptive and innate immunity (IL-10, IL-1beta, IL-6, IL-8, IL-12p70, and tumor necrosis factor-alpha) were similar in control subjects and type 1 diabetic patients.
4425 15855327 These data suggest that age strongly influences the frequency of CD4+ CD25+ T-cells and that function, rather than frequency, may represent the means by which these cells associate with type 1 diabetes in humans.
4426 15855327 Functional defects and the influence of age on the frequency of CD4+ CD25+ T-cells in type 1 diabetes.
4427 15855327 CD4+ CD25+ T-cells appear to play a crucial role in regulating the immune response.
4428 15855327 Therefore, we evaluated the peripheral blood frequency and function of CD4+ CD25+ T-cells in 70 type 1 diabetic patients and 37 healthy individuals.
4429 15855327 Interestingly, a positive correlation was observed between increasing age and CD4+ CD25+ T-cell frequency in both subject groups.
4430 15855327 In contrast to previous studies of nonobese diabetic mice and type 1 diabetic patients, similar frequencies of CD4+ CD25+ and CD4+ CD25(+Bright) T-cells were observed in healthy control subjects and type 1 diabetic patients of similar age.
4431 15855327 There was no difference between type 1 diabetic subjects of recent-onset versus those with established disease in terms of their CD4+ CD25+ or CD4+ CD25(+Bright) T-cell frequency.
4432 15855327 This type 1 diabetes-associated defect in suppression was associated with reduced production of interleukin (IL)-2, gamma-interferon, and transforming growth factor-beta, whereas other cytokines including those of adaptive and innate immunity (IL-10, IL-1beta, IL-6, IL-8, IL-12p70, and tumor necrosis factor-alpha) were similar in control subjects and type 1 diabetic patients.
4433 15855327 These data suggest that age strongly influences the frequency of CD4+ CD25+ T-cells and that function, rather than frequency, may represent the means by which these cells associate with type 1 diabetes in humans.
4434 15855327 Functional defects and the influence of age on the frequency of CD4+ CD25+ T-cells in type 1 diabetes.
4435 15855327 CD4+ CD25+ T-cells appear to play a crucial role in regulating the immune response.
4436 15855327 Therefore, we evaluated the peripheral blood frequency and function of CD4+ CD25+ T-cells in 70 type 1 diabetic patients and 37 healthy individuals.
4437 15855327 Interestingly, a positive correlation was observed between increasing age and CD4+ CD25+ T-cell frequency in both subject groups.
4438 15855327 In contrast to previous studies of nonobese diabetic mice and type 1 diabetic patients, similar frequencies of CD4+ CD25+ and CD4+ CD25(+Bright) T-cells were observed in healthy control subjects and type 1 diabetic patients of similar age.
4439 15855327 There was no difference between type 1 diabetic subjects of recent-onset versus those with established disease in terms of their CD4+ CD25+ or CD4+ CD25(+Bright) T-cell frequency.
4440 15855327 This type 1 diabetes-associated defect in suppression was associated with reduced production of interleukin (IL)-2, gamma-interferon, and transforming growth factor-beta, whereas other cytokines including those of adaptive and innate immunity (IL-10, IL-1beta, IL-6, IL-8, IL-12p70, and tumor necrosis factor-alpha) were similar in control subjects and type 1 diabetic patients.
4441 15855327 These data suggest that age strongly influences the frequency of CD4+ CD25+ T-cells and that function, rather than frequency, may represent the means by which these cells associate with type 1 diabetes in humans.
4442 15855327 Functional defects and the influence of age on the frequency of CD4+ CD25+ T-cells in type 1 diabetes.
4443 15855327 CD4+ CD25+ T-cells appear to play a crucial role in regulating the immune response.
4444 15855327 Therefore, we evaluated the peripheral blood frequency and function of CD4+ CD25+ T-cells in 70 type 1 diabetic patients and 37 healthy individuals.
4445 15855327 Interestingly, a positive correlation was observed between increasing age and CD4+ CD25+ T-cell frequency in both subject groups.
4446 15855327 In contrast to previous studies of nonobese diabetic mice and type 1 diabetic patients, similar frequencies of CD4+ CD25+ and CD4+ CD25(+Bright) T-cells were observed in healthy control subjects and type 1 diabetic patients of similar age.
4447 15855327 There was no difference between type 1 diabetic subjects of recent-onset versus those with established disease in terms of their CD4+ CD25+ or CD4+ CD25(+Bright) T-cell frequency.
4448 15855327 This type 1 diabetes-associated defect in suppression was associated with reduced production of interleukin (IL)-2, gamma-interferon, and transforming growth factor-beta, whereas other cytokines including those of adaptive and innate immunity (IL-10, IL-1beta, IL-6, IL-8, IL-12p70, and tumor necrosis factor-alpha) were similar in control subjects and type 1 diabetic patients.
4449 15855327 These data suggest that age strongly influences the frequency of CD4+ CD25+ T-cells and that function, rather than frequency, may represent the means by which these cells associate with type 1 diabetes in humans.
4450 15855327 Functional defects and the influence of age on the frequency of CD4+ CD25+ T-cells in type 1 diabetes.
4451 15855327 CD4+ CD25+ T-cells appear to play a crucial role in regulating the immune response.
4452 15855327 Therefore, we evaluated the peripheral blood frequency and function of CD4+ CD25+ T-cells in 70 type 1 diabetic patients and 37 healthy individuals.
4453 15855327 Interestingly, a positive correlation was observed between increasing age and CD4+ CD25+ T-cell frequency in both subject groups.
4454 15855327 In contrast to previous studies of nonobese diabetic mice and type 1 diabetic patients, similar frequencies of CD4+ CD25+ and CD4+ CD25(+Bright) T-cells were observed in healthy control subjects and type 1 diabetic patients of similar age.
4455 15855327 There was no difference between type 1 diabetic subjects of recent-onset versus those with established disease in terms of their CD4+ CD25+ or CD4+ CD25(+Bright) T-cell frequency.
4456 15855327 This type 1 diabetes-associated defect in suppression was associated with reduced production of interleukin (IL)-2, gamma-interferon, and transforming growth factor-beta, whereas other cytokines including those of adaptive and innate immunity (IL-10, IL-1beta, IL-6, IL-8, IL-12p70, and tumor necrosis factor-alpha) were similar in control subjects and type 1 diabetic patients.
4457 15855327 These data suggest that age strongly influences the frequency of CD4+ CD25+ T-cells and that function, rather than frequency, may represent the means by which these cells associate with type 1 diabetes in humans.
4458 15855327 Functional defects and the influence of age on the frequency of CD4+ CD25+ T-cells in type 1 diabetes.
4459 15855327 CD4+ CD25+ T-cells appear to play a crucial role in regulating the immune response.
4460 15855327 Therefore, we evaluated the peripheral blood frequency and function of CD4+ CD25+ T-cells in 70 type 1 diabetic patients and 37 healthy individuals.
4461 15855327 Interestingly, a positive correlation was observed between increasing age and CD4+ CD25+ T-cell frequency in both subject groups.
4462 15855327 In contrast to previous studies of nonobese diabetic mice and type 1 diabetic patients, similar frequencies of CD4+ CD25+ and CD4+ CD25(+Bright) T-cells were observed in healthy control subjects and type 1 diabetic patients of similar age.
4463 15855327 There was no difference between type 1 diabetic subjects of recent-onset versus those with established disease in terms of their CD4+ CD25+ or CD4+ CD25(+Bright) T-cell frequency.
4464 15855327 This type 1 diabetes-associated defect in suppression was associated with reduced production of interleukin (IL)-2, gamma-interferon, and transforming growth factor-beta, whereas other cytokines including those of adaptive and innate immunity (IL-10, IL-1beta, IL-6, IL-8, IL-12p70, and tumor necrosis factor-alpha) were similar in control subjects and type 1 diabetic patients.
4465 15855327 These data suggest that age strongly influences the frequency of CD4+ CD25+ T-cells and that function, rather than frequency, may represent the means by which these cells associate with type 1 diabetes in humans.
4466 15855327 Functional defects and the influence of age on the frequency of CD4+ CD25+ T-cells in type 1 diabetes.
4467 15855327 CD4+ CD25+ T-cells appear to play a crucial role in regulating the immune response.
4468 15855327 Therefore, we evaluated the peripheral blood frequency and function of CD4+ CD25+ T-cells in 70 type 1 diabetic patients and 37 healthy individuals.
4469 15855327 Interestingly, a positive correlation was observed between increasing age and CD4+ CD25+ T-cell frequency in both subject groups.
4470 15855327 In contrast to previous studies of nonobese diabetic mice and type 1 diabetic patients, similar frequencies of CD4+ CD25+ and CD4+ CD25(+Bright) T-cells were observed in healthy control subjects and type 1 diabetic patients of similar age.
4471 15855327 There was no difference between type 1 diabetic subjects of recent-onset versus those with established disease in terms of their CD4+ CD25+ or CD4+ CD25(+Bright) T-cell frequency.
4472 15855327 This type 1 diabetes-associated defect in suppression was associated with reduced production of interleukin (IL)-2, gamma-interferon, and transforming growth factor-beta, whereas other cytokines including those of adaptive and innate immunity (IL-10, IL-1beta, IL-6, IL-8, IL-12p70, and tumor necrosis factor-alpha) were similar in control subjects and type 1 diabetic patients.
4473 15855327 These data suggest that age strongly influences the frequency of CD4+ CD25+ T-cells and that function, rather than frequency, may represent the means by which these cells associate with type 1 diabetes in humans.
4474 15855328 The delay in diabetes appearance is explained by the presence of regulatory CD4+ CD25+ T-cells that control diabetogenic effectors and that are, in our hands, transforming growth factor (TGF)-beta-dependent.
4475 15855336 When diabetic mice are treated with the RANKL antagonist osteoprotegerin (OPG), there is a significant reversal of alveolar bone loss, as well as reduced RANKL expression in A. actinomycetemcomitans-reactive CD4+ T-cells.
4476 15855336 Thus, microorganism-reactive CD4+ T-cells and the RANKL-OPG axis provide the molecular basis of the advanced periodontal breakdown in diabetes and, therefore, OPG may hold therapeutic potential for treating bone loss in diabetic subjects at high risk.
4477 15855336 When diabetic mice are treated with the RANKL antagonist osteoprotegerin (OPG), there is a significant reversal of alveolar bone loss, as well as reduced RANKL expression in A. actinomycetemcomitans-reactive CD4+ T-cells.
4478 15855336 Thus, microorganism-reactive CD4+ T-cells and the RANKL-OPG axis provide the molecular basis of the advanced periodontal breakdown in diabetes and, therefore, OPG may hold therapeutic potential for treating bone loss in diabetic subjects at high risk.
4479 15867147 The c-Jun NH(2)-terminal kinase isoform (JNK) 1 is implicated in type 2 diabetes.
4480 15867147 Here, we demonstrate that JNK2 may play an important role in type 1 (insulin-dependent) diabetes that is caused by autoimmune destruction of beta cells.
4481 15867147 CD4(+) T cells from JNK2-deficient nonobese diabetic mice produced less IFN-gamma but significantly increased amounts of IL-4 and IL-5, indicating polarization toward the Th2 phenotype.
4482 15867147 We conclude that JNK protein kinases may have important roles in diabetes, including functions of JNK1 in type 2 diabetes and JNK2 in type 1 diabetes.
4483 15870014 In vitro expanded human CD4+CD25+ regulatory T cells suppress effector T cell proliferation.
4484 15870014 We isolated CD4+CD25 hi cells from human peripheral blood and expanded them in vitro in the presence of anti-CD3 and anti-CD28 magnetic Xcyte Dynabeads and high concentrations of exogenous Interleukin (IL)-2.
4485 15870014 Tregs were effectively expanded up to 200-fold while maintaining surface expression of CD25 and other markers of Tregs: CD62L, HLA-DR, CCR6, and FOXP3.
4486 15870014 In vitro expanded human CD4+CD25+ regulatory T cells suppress effector T cell proliferation.
4487 15870014 We isolated CD4+CD25 hi cells from human peripheral blood and expanded them in vitro in the presence of anti-CD3 and anti-CD28 magnetic Xcyte Dynabeads and high concentrations of exogenous Interleukin (IL)-2.
4488 15870014 Tregs were effectively expanded up to 200-fold while maintaining surface expression of CD25 and other markers of Tregs: CD62L, HLA-DR, CCR6, and FOXP3.
4489 15881418 Administration of protoporphyrins to the recipients of allogeneic islets also resulted in transient powerful immunosuppression with reduced lymphocyte proliferative responses, increased proportion of regulatory cells (CD4+CD25+), decreased mononuclear cell infiltrating the graft, paralleled by a systemic upregulation of HO-1 expression.
4490 15897273 This previously unrecognized feature of a CD4(+) T cell response contrasts with the proliferative behavior of CD8(+) T cells that has been documented, and it implies that the two T cell subsets might require different strategies for efficient vaccination.
4491 15905517 We report in this study that this deficiency develops after the CD4(+)CD8(+) double-positive stage of thymic T cell development and is due to a lineage-specific depletion of CD4(-)CD8(-) double-negative alphabeta T cells and iNKT cells from the thymus between embryonic day 18 and day 1 after birth.
4492 15935691 Correlation between intracellular interferon-gamma (IFN-gamma) production by CD4+ and CD8+ lymphocytes and IFN-gamma gene polymorphism in patients with type 2 diabetes mellitus and latent autoimmune diabetes of adults (LADA).
4493 15935691 Subsequently, an attempt was made to correlate the presence of this mutation with the ability of CD4+ or CD8+ lymphocytes from these individuals to release IFN-gamma following mitogenic stimulation.
4494 15935691 CD4+ and CD8+ cells obtained from type 2 diabetics released significantly lower amounts of IFN-gamma in the intracellular space, compared to those released by cells obtained from LADA patients and healthy volunteers.
4495 15935691 Furthermore, even CD4+ and CD8+ from type 2 diabetics bearing the TT genotype (high producers) released significantly lower amounts of IFN-gamma than LADA patients carrying the same genotype, probably due to the activity of molecules directly or indirectly inhibiting IFN-gamma production.
4496 15935691 Correlation between intracellular interferon-gamma (IFN-gamma) production by CD4+ and CD8+ lymphocytes and IFN-gamma gene polymorphism in patients with type 2 diabetes mellitus and latent autoimmune diabetes of adults (LADA).
4497 15935691 Subsequently, an attempt was made to correlate the presence of this mutation with the ability of CD4+ or CD8+ lymphocytes from these individuals to release IFN-gamma following mitogenic stimulation.
4498 15935691 CD4+ and CD8+ cells obtained from type 2 diabetics released significantly lower amounts of IFN-gamma in the intracellular space, compared to those released by cells obtained from LADA patients and healthy volunteers.
4499 15935691 Furthermore, even CD4+ and CD8+ from type 2 diabetics bearing the TT genotype (high producers) released significantly lower amounts of IFN-gamma than LADA patients carrying the same genotype, probably due to the activity of molecules directly or indirectly inhibiting IFN-gamma production.
4500 15935691 Correlation between intracellular interferon-gamma (IFN-gamma) production by CD4+ and CD8+ lymphocytes and IFN-gamma gene polymorphism in patients with type 2 diabetes mellitus and latent autoimmune diabetes of adults (LADA).
4501 15935691 Subsequently, an attempt was made to correlate the presence of this mutation with the ability of CD4+ or CD8+ lymphocytes from these individuals to release IFN-gamma following mitogenic stimulation.
4502 15935691 CD4+ and CD8+ cells obtained from type 2 diabetics released significantly lower amounts of IFN-gamma in the intracellular space, compared to those released by cells obtained from LADA patients and healthy volunteers.
4503 15935691 Furthermore, even CD4+ and CD8+ from type 2 diabetics bearing the TT genotype (high producers) released significantly lower amounts of IFN-gamma than LADA patients carrying the same genotype, probably due to the activity of molecules directly or indirectly inhibiting IFN-gamma production.
4504 15935691 Correlation between intracellular interferon-gamma (IFN-gamma) production by CD4+ and CD8+ lymphocytes and IFN-gamma gene polymorphism in patients with type 2 diabetes mellitus and latent autoimmune diabetes of adults (LADA).
4505 15935691 Subsequently, an attempt was made to correlate the presence of this mutation with the ability of CD4+ or CD8+ lymphocytes from these individuals to release IFN-gamma following mitogenic stimulation.
4506 15935691 CD4+ and CD8+ cells obtained from type 2 diabetics released significantly lower amounts of IFN-gamma in the intracellular space, compared to those released by cells obtained from LADA patients and healthy volunteers.
4507 15935691 Furthermore, even CD4+ and CD8+ from type 2 diabetics bearing the TT genotype (high producers) released significantly lower amounts of IFN-gamma than LADA patients carrying the same genotype, probably due to the activity of molecules directly or indirectly inhibiting IFN-gamma production.
4508 15942943 RAD51L1 is a tumor-suppressor gene belonging to the RAD51 family, already implicated in many tumors (uterine leiomyomas, pseudo-Meigs syndromes, pulmonary chondroid hamartomas) and involved in recombinational repair of DNA double-strand breaks.
4509 15942943 BMP2 belongs to the TGFbeta superfamily, and the BMP2-BMP4 genes are involved in thymocyte differentiation by blocking progression from CD4-CD8- to CD4+CD8+ while maintaining a sufficient pool of immature precursors.
4510 15975818 Rat kidneys were examined by light and electron microscopy and kidney homogenates were also analyzed by Western blot and flow cytometry for the expression of markers of inflammation namely, CD4+ and CD8+ T cells, macrophages, MHC classes I and II, the proinflammatory cytokines tumor necrosis factor-alpha, interferon-gamma and nitric oxide (NO).
4511 15975818 Western blot and flow cytometric analyses revealed the infiltrating cells to be CD4+ T cells, CD8+ T cells and macrophages.
4512 15975818 Western blot analyses also revealed increased expression of the proinflammatory and Th1 cytokines tumor necrosis factor-alpha, interferon-gamma as well as nitric oxide.
4513 15975818 Using flow cytometry, we have shown that the difference in expression of CD4+ T cells in control and diabetic kidneys is more significant at 1 month than at 8 months, while expression of CD8+ T cells is more significant at 8 months.
4514 15975818 Our data implicate inflammation in the pathogenesis of diabetic nephropathy in view of the overexpression of the proinflammatory cytokines TNF-alpha and IFN-gamma and the cells that secrete them in the early and late phases of the disease.
4515 15975818 Rat kidneys were examined by light and electron microscopy and kidney homogenates were also analyzed by Western blot and flow cytometry for the expression of markers of inflammation namely, CD4+ and CD8+ T cells, macrophages, MHC classes I and II, the proinflammatory cytokines tumor necrosis factor-alpha, interferon-gamma and nitric oxide (NO).
4516 15975818 Western blot and flow cytometric analyses revealed the infiltrating cells to be CD4+ T cells, CD8+ T cells and macrophages.
4517 15975818 Western blot analyses also revealed increased expression of the proinflammatory and Th1 cytokines tumor necrosis factor-alpha, interferon-gamma as well as nitric oxide.
4518 15975818 Using flow cytometry, we have shown that the difference in expression of CD4+ T cells in control and diabetic kidneys is more significant at 1 month than at 8 months, while expression of CD8+ T cells is more significant at 8 months.
4519 15975818 Our data implicate inflammation in the pathogenesis of diabetic nephropathy in view of the overexpression of the proinflammatory cytokines TNF-alpha and IFN-gamma and the cells that secrete them in the early and late phases of the disease.
4520 15975818 Rat kidneys were examined by light and electron microscopy and kidney homogenates were also analyzed by Western blot and flow cytometry for the expression of markers of inflammation namely, CD4+ and CD8+ T cells, macrophages, MHC classes I and II, the proinflammatory cytokines tumor necrosis factor-alpha, interferon-gamma and nitric oxide (NO).
4521 15975818 Western blot and flow cytometric analyses revealed the infiltrating cells to be CD4+ T cells, CD8+ T cells and macrophages.
4522 15975818 Western blot analyses also revealed increased expression of the proinflammatory and Th1 cytokines tumor necrosis factor-alpha, interferon-gamma as well as nitric oxide.
4523 15975818 Using flow cytometry, we have shown that the difference in expression of CD4+ T cells in control and diabetic kidneys is more significant at 1 month than at 8 months, while expression of CD8+ T cells is more significant at 8 months.
4524 15975818 Our data implicate inflammation in the pathogenesis of diabetic nephropathy in view of the overexpression of the proinflammatory cytokines TNF-alpha and IFN-gamma and the cells that secrete them in the early and late phases of the disease.
4525 15977097 At T1DM onset we observed significantly lower percentage of peripheral CD4 + and CD8 + cells producing IFN-gamma in patients compared to controls and subjects at risk.
4526 15977097 The 15-month follow-up patients showed significantly lower percentage of CD4 + and CD8 + cells producing IFN-gamma compared to the other groups.
4527 15977097 At T1DM onset we observed significantly lower percentage of peripheral CD4 + and CD8 + cells producing IFN-gamma in patients compared to controls and subjects at risk.
4528 15977097 The 15-month follow-up patients showed significantly lower percentage of CD4 + and CD8 + cells producing IFN-gamma compared to the other groups.
4529 15979891 In 62 GDM patients and 74 women with normal glucose tolerance (NGT), and their babies, we assessed total lymphocytes, T lymphocyte subsets CD3 and CD8 expressing T cell receptor (TCR) alpha/beta or gamma/delta, CD16 and CD19, pancreatic autoantibodies and cytokines (IL-5, IL-2, soluble receptor IL-2).
4530 15979891 Insulin-treated GDM mothers had lower CD4 and CD4/CD8 ratios, and higher CD8 and IL-5 than diet-treated GDM or controls.
4531 15979891 Five women were positive for pancreatic autoantibodies, with lower CD4 (p<0.01) and CD4/CD8 ratios (p<0.05), and higher CD8 (p<0.03) and CD19 than GDM and control mothers negative for autoantibodies.
4532 15979891 GDM newborn had higher CD8 gamma/delta and lower CD16 than NGT babies.
4533 15979891 In 62 GDM patients and 74 women with normal glucose tolerance (NGT), and their babies, we assessed total lymphocytes, T lymphocyte subsets CD3 and CD8 expressing T cell receptor (TCR) alpha/beta or gamma/delta, CD16 and CD19, pancreatic autoantibodies and cytokines (IL-5, IL-2, soluble receptor IL-2).
4534 15979891 Insulin-treated GDM mothers had lower CD4 and CD4/CD8 ratios, and higher CD8 and IL-5 than diet-treated GDM or controls.
4535 15979891 Five women were positive for pancreatic autoantibodies, with lower CD4 (p<0.01) and CD4/CD8 ratios (p<0.05), and higher CD8 (p<0.03) and CD19 than GDM and control mothers negative for autoantibodies.
4536 15979891 GDM newborn had higher CD8 gamma/delta and lower CD16 than NGT babies.
4537 15993359 The (CD4+)(CD25+)/(CD4+)(CD25-) cell ratio increased (P=.0128) at 24 weeks in the 20 microg group.
4538 16005609 DEF dimer protection relied on induction of anergy of diabetogenic CD4 T-cells in spleen, and stimulation of IL-10-secreting T regulatory type 1 cells in pancreas.
4539 16034108 CD8+ T cell tolerance in nonobese diabetic mice is restored by insulin-dependent diabetes resistance alleles.
4540 16034108 In the current study we have used NOD-InsHA transgenic mice that express the influenza hemagglutinin (HA) as an islet Ag to compare the fate of HA-specific CD8+ T cells in diabetes susceptible NOD-InsHA mice with that observed in diabetes-resistant congenic mice having protective alleles at insulin-dependent diabetes (Idd) 3, Idd5.1, and Idd5.2 (Idd3/5 strain) or at Idd9.1, Idd9.2, and Idd9.3 (Idd9 strain).
4541 16034108 However, by following the fate of naive, CFSE-labeled, islet Ag-specific CD8+ (HA-specific clone-4) or CD4+ (BDC2.5) T cells, we observed that tolerance is achieved differently in each protected strain.
4542 16034108 In Idd3/5 mice, tolerance occurs during the initial activation of islet Ag-specific CD8+ and CD4+ T cells in the pancreatic lymph nodes where CD25+ regulatory T cells (Tregs) effectively prevent their accumulation.
4543 16034108 In contrast, resistance alleles in Idd9 mice do not prevent the accumulation of islet Ag-specific CD8+ and CD4+ T cells in the pancreatic lymph nodes, indicating that tolerance occurs at a later checkpoint.
4544 16034108 CD8+ T cell tolerance in nonobese diabetic mice is restored by insulin-dependent diabetes resistance alleles.
4545 16034108 In the current study we have used NOD-InsHA transgenic mice that express the influenza hemagglutinin (HA) as an islet Ag to compare the fate of HA-specific CD8+ T cells in diabetes susceptible NOD-InsHA mice with that observed in diabetes-resistant congenic mice having protective alleles at insulin-dependent diabetes (Idd) 3, Idd5.1, and Idd5.2 (Idd3/5 strain) or at Idd9.1, Idd9.2, and Idd9.3 (Idd9 strain).
4546 16034108 However, by following the fate of naive, CFSE-labeled, islet Ag-specific CD8+ (HA-specific clone-4) or CD4+ (BDC2.5) T cells, we observed that tolerance is achieved differently in each protected strain.
4547 16034108 In Idd3/5 mice, tolerance occurs during the initial activation of islet Ag-specific CD8+ and CD4+ T cells in the pancreatic lymph nodes where CD25+ regulatory T cells (Tregs) effectively prevent their accumulation.
4548 16034108 In contrast, resistance alleles in Idd9 mice do not prevent the accumulation of islet Ag-specific CD8+ and CD4+ T cells in the pancreatic lymph nodes, indicating that tolerance occurs at a later checkpoint.
4549 16034108 CD8+ T cell tolerance in nonobese diabetic mice is restored by insulin-dependent diabetes resistance alleles.
4550 16034108 In the current study we have used NOD-InsHA transgenic mice that express the influenza hemagglutinin (HA) as an islet Ag to compare the fate of HA-specific CD8+ T cells in diabetes susceptible NOD-InsHA mice with that observed in diabetes-resistant congenic mice having protective alleles at insulin-dependent diabetes (Idd) 3, Idd5.1, and Idd5.2 (Idd3/5 strain) or at Idd9.1, Idd9.2, and Idd9.3 (Idd9 strain).
4551 16034108 However, by following the fate of naive, CFSE-labeled, islet Ag-specific CD8+ (HA-specific clone-4) or CD4+ (BDC2.5) T cells, we observed that tolerance is achieved differently in each protected strain.
4552 16034108 In Idd3/5 mice, tolerance occurs during the initial activation of islet Ag-specific CD8+ and CD4+ T cells in the pancreatic lymph nodes where CD25+ regulatory T cells (Tregs) effectively prevent their accumulation.
4553 16034108 In contrast, resistance alleles in Idd9 mice do not prevent the accumulation of islet Ag-specific CD8+ and CD4+ T cells in the pancreatic lymph nodes, indicating that tolerance occurs at a later checkpoint.
4554 16038020 Cytokine interleukin-12 (IL-12) is one of the key factors in the differentiation of naïve CD4(+) T cells into Th1 cells.
4555 16038020 In this study we used 2-DE and MS to find and identify IL-12 regulated proteins in human CD4(+) T cells.
4556 16038020 Among the upregulated proteins there are a multifunctional cytokine macrophage migration inhibitory factor and a known IL-12 target gene Programmed cell death 4.
4557 16038020 Downregulated proteins include p21-activated kinase 2 and its upstream GTPase Cdc42.
4558 16038020 Compared to previous reports our analysis provides a new view on the IL-12 induced changes on CD4(+) T cells underscoring the importance of creating and combining the data generated at various levels to build a comprehensive view of a given biological process of the cell.
4559 16038020 Cytokine interleukin-12 (IL-12) is one of the key factors in the differentiation of naïve CD4(+) T cells into Th1 cells.
4560 16038020 In this study we used 2-DE and MS to find and identify IL-12 regulated proteins in human CD4(+) T cells.
4561 16038020 Among the upregulated proteins there are a multifunctional cytokine macrophage migration inhibitory factor and a known IL-12 target gene Programmed cell death 4.
4562 16038020 Downregulated proteins include p21-activated kinase 2 and its upstream GTPase Cdc42.
4563 16038020 Compared to previous reports our analysis provides a new view on the IL-12 induced changes on CD4(+) T cells underscoring the importance of creating and combining the data generated at various levels to build a comprehensive view of a given biological process of the cell.
4564 16038020 Cytokine interleukin-12 (IL-12) is one of the key factors in the differentiation of naïve CD4(+) T cells into Th1 cells.
4565 16038020 In this study we used 2-DE and MS to find and identify IL-12 regulated proteins in human CD4(+) T cells.
4566 16038020 Among the upregulated proteins there are a multifunctional cytokine macrophage migration inhibitory factor and a known IL-12 target gene Programmed cell death 4.
4567 16038020 Downregulated proteins include p21-activated kinase 2 and its upstream GTPase Cdc42.
4568 16038020 Compared to previous reports our analysis provides a new view on the IL-12 induced changes on CD4(+) T cells underscoring the importance of creating and combining the data generated at various levels to build a comprehensive view of a given biological process of the cell.
4569 16048553 Oral antigen induces T-helper 2 [interleukin (IL)-4/IL-10] and Th3 [transforming growth factor (TGF)-beta] T cells plus CD4+CD25+ regulatory cells and latency-associated peptide+ T cells.
4570 16048553 Induction of oral tolerance is enhanced by IL-4, IL-10, anti-IL-12, TGF-beta, cholera toxin B subunit, Flt-3 ligand, and anti-CD40 ligand.
4571 16081026 Much focus has been placed on thymically derived CD4(+)CD25(+) regulatory T cells, given that the depletion of this subset in murine models results in the spontaneous development of autoimmune diseases.
4572 16106371 Our results indicate that (1) autoreactive CD4 T cells to GAD65 autoantigen are commonly present in humans expressing diabetes-susceptible HLA-DR*0401 molecules; (2) these autoreactive T cells undergo avidity maturation upon encountering the self antigen early in life; (3) the disease is associated with an imbalance between autoreactive CD4+CD25+ and CD4+CD69+ T cells specific for GAD65.
4573 16116193 Expansion of functional endogenous antigen-specific CD4+CD25+ regulatory T cells from nonobese diabetic mice.
4574 16116193 CD4+CD25+Foxp3+ regulatory T cells (T(reg)) are critical for controlling autoimmunity.
4575 16116193 Expansion of functional endogenous antigen-specific CD4+CD25+ regulatory T cells from nonobese diabetic mice.
4576 16116193 CD4+CD25+Foxp3+ regulatory T cells (T(reg)) are critical for controlling autoimmunity.
4577 16122720 CD4+CD25+ regulatory T cells control the progression from periinsulitis to destructive insulitis in murine autoimmune diabetes.
4578 16122720 Consistent with this hypothesis, CD4+CD25+ cell-depleted spleen cells from NOR mice mediated islet cell destruction and overt diabetes in NOD SCID mice.
4579 16122720 Therefore, islet cell-specific effector cells in NOR mice appear to be under the control of CD4+CD25+ regulatory T cells, confirming the importance of regulatory cells in the control of autoimmune diabetes.
4580 16122720 CD4+CD25+ regulatory T cells control the progression from periinsulitis to destructive insulitis in murine autoimmune diabetes.
4581 16122720 Consistent with this hypothesis, CD4+CD25+ cell-depleted spleen cells from NOR mice mediated islet cell destruction and overt diabetes in NOD SCID mice.
4582 16122720 Therefore, islet cell-specific effector cells in NOR mice appear to be under the control of CD4+CD25+ regulatory T cells, confirming the importance of regulatory cells in the control of autoimmune diabetes.
4583 16122720 CD4+CD25+ regulatory T cells control the progression from periinsulitis to destructive insulitis in murine autoimmune diabetes.
4584 16122720 Consistent with this hypothesis, CD4+CD25+ cell-depleted spleen cells from NOR mice mediated islet cell destruction and overt diabetes in NOD SCID mice.
4585 16122720 Therefore, islet cell-specific effector cells in NOR mice appear to be under the control of CD4+CD25+ regulatory T cells, confirming the importance of regulatory cells in the control of autoimmune diabetes.
4586 16126946 Control of type 1 autoimmune diabetes by naturally occurring CD4+CD25+ regulatory T lymphocytes in neonatal NOD mice.
4587 16126946 Naturally occurring CD4(+)CD25(+) T(reg) (nT(reg)) cells, which typically display potent inhibitory effects on T cell functions in vitro and in vivo, may be defective at controlling autoimmunity in T1D.
4588 16126946 We have examined the relative contribution of CD4(+)CD25(+) nT(reg) cells in the immune regulation of T1D in the NOD mouse model.
4589 16126946 CD4(+)CD25(+) T cells represent 5-10% of CD4(+) thymocytes or peripheral T cells from prediabetic neonatal NOD mice, are anergic to TCR signals, and potently suppress activated T cells in a contact-dependent and cytokine-independent fashion in vitro.
4590 16126946 Unlike total CD4(+) T cells, prediabetic CD25(+)-depleted CD4(+) T cells are potently diabetogenic when transferred in immunodeficient NOD mice.
4591 16126946 Co-transfer of CD4(+)CD25(+) T cells from thymocytes or peripheral lymphoid tissues of neonatal NOD mice dramatically halts disease development and beta-islet cell lymphocytic infiltration, even when T1D is induced by CD4(+) T cells from BDC2.5 transgenic or diabetic NOD mice.
4592 16126946 Finally, we show that CD4(+)CD25(+) T(reg) preferentially accumulate in inflamed pancreatic environments, where they potently inhibit the antigen-specific expansion and cytokine effector functions of diabetogenic T cells.
4593 16126946 Thus, CD4(+)CD25(+) T cell-mediated regulation is operative in the prediabetic neonatal T cell repertoire and can suppress the diabetogenic process and control the onset of T1D.
4594 16126946 Control of type 1 autoimmune diabetes by naturally occurring CD4+CD25+ regulatory T lymphocytes in neonatal NOD mice.
4595 16126946 Naturally occurring CD4(+)CD25(+) T(reg) (nT(reg)) cells, which typically display potent inhibitory effects on T cell functions in vitro and in vivo, may be defective at controlling autoimmunity in T1D.
4596 16126946 We have examined the relative contribution of CD4(+)CD25(+) nT(reg) cells in the immune regulation of T1D in the NOD mouse model.
4597 16126946 CD4(+)CD25(+) T cells represent 5-10% of CD4(+) thymocytes or peripheral T cells from prediabetic neonatal NOD mice, are anergic to TCR signals, and potently suppress activated T cells in a contact-dependent and cytokine-independent fashion in vitro.
4598 16126946 Unlike total CD4(+) T cells, prediabetic CD25(+)-depleted CD4(+) T cells are potently diabetogenic when transferred in immunodeficient NOD mice.
4599 16126946 Co-transfer of CD4(+)CD25(+) T cells from thymocytes or peripheral lymphoid tissues of neonatal NOD mice dramatically halts disease development and beta-islet cell lymphocytic infiltration, even when T1D is induced by CD4(+) T cells from BDC2.5 transgenic or diabetic NOD mice.
4600 16126946 Finally, we show that CD4(+)CD25(+) T(reg) preferentially accumulate in inflamed pancreatic environments, where they potently inhibit the antigen-specific expansion and cytokine effector functions of diabetogenic T cells.
4601 16126946 Thus, CD4(+)CD25(+) T cell-mediated regulation is operative in the prediabetic neonatal T cell repertoire and can suppress the diabetogenic process and control the onset of T1D.
4602 16126946 Control of type 1 autoimmune diabetes by naturally occurring CD4+CD25+ regulatory T lymphocytes in neonatal NOD mice.
4603 16126946 Naturally occurring CD4(+)CD25(+) T(reg) (nT(reg)) cells, which typically display potent inhibitory effects on T cell functions in vitro and in vivo, may be defective at controlling autoimmunity in T1D.
4604 16126946 We have examined the relative contribution of CD4(+)CD25(+) nT(reg) cells in the immune regulation of T1D in the NOD mouse model.
4605 16126946 CD4(+)CD25(+) T cells represent 5-10% of CD4(+) thymocytes or peripheral T cells from prediabetic neonatal NOD mice, are anergic to TCR signals, and potently suppress activated T cells in a contact-dependent and cytokine-independent fashion in vitro.
4606 16126946 Unlike total CD4(+) T cells, prediabetic CD25(+)-depleted CD4(+) T cells are potently diabetogenic when transferred in immunodeficient NOD mice.
4607 16126946 Co-transfer of CD4(+)CD25(+) T cells from thymocytes or peripheral lymphoid tissues of neonatal NOD mice dramatically halts disease development and beta-islet cell lymphocytic infiltration, even when T1D is induced by CD4(+) T cells from BDC2.5 transgenic or diabetic NOD mice.
4608 16126946 Finally, we show that CD4(+)CD25(+) T(reg) preferentially accumulate in inflamed pancreatic environments, where they potently inhibit the antigen-specific expansion and cytokine effector functions of diabetogenic T cells.
4609 16126946 Thus, CD4(+)CD25(+) T cell-mediated regulation is operative in the prediabetic neonatal T cell repertoire and can suppress the diabetogenic process and control the onset of T1D.
4610 16126946 Control of type 1 autoimmune diabetes by naturally occurring CD4+CD25+ regulatory T lymphocytes in neonatal NOD mice.
4611 16126946 Naturally occurring CD4(+)CD25(+) T(reg) (nT(reg)) cells, which typically display potent inhibitory effects on T cell functions in vitro and in vivo, may be defective at controlling autoimmunity in T1D.
4612 16126946 We have examined the relative contribution of CD4(+)CD25(+) nT(reg) cells in the immune regulation of T1D in the NOD mouse model.
4613 16126946 CD4(+)CD25(+) T cells represent 5-10% of CD4(+) thymocytes or peripheral T cells from prediabetic neonatal NOD mice, are anergic to TCR signals, and potently suppress activated T cells in a contact-dependent and cytokine-independent fashion in vitro.
4614 16126946 Unlike total CD4(+) T cells, prediabetic CD25(+)-depleted CD4(+) T cells are potently diabetogenic when transferred in immunodeficient NOD mice.
4615 16126946 Co-transfer of CD4(+)CD25(+) T cells from thymocytes or peripheral lymphoid tissues of neonatal NOD mice dramatically halts disease development and beta-islet cell lymphocytic infiltration, even when T1D is induced by CD4(+) T cells from BDC2.5 transgenic or diabetic NOD mice.
4616 16126946 Finally, we show that CD4(+)CD25(+) T(reg) preferentially accumulate in inflamed pancreatic environments, where they potently inhibit the antigen-specific expansion and cytokine effector functions of diabetogenic T cells.
4617 16126946 Thus, CD4(+)CD25(+) T cell-mediated regulation is operative in the prediabetic neonatal T cell repertoire and can suppress the diabetogenic process and control the onset of T1D.
4618 16126946 Control of type 1 autoimmune diabetes by naturally occurring CD4+CD25+ regulatory T lymphocytes in neonatal NOD mice.
4619 16126946 Naturally occurring CD4(+)CD25(+) T(reg) (nT(reg)) cells, which typically display potent inhibitory effects on T cell functions in vitro and in vivo, may be defective at controlling autoimmunity in T1D.
4620 16126946 We have examined the relative contribution of CD4(+)CD25(+) nT(reg) cells in the immune regulation of T1D in the NOD mouse model.
4621 16126946 CD4(+)CD25(+) T cells represent 5-10% of CD4(+) thymocytes or peripheral T cells from prediabetic neonatal NOD mice, are anergic to TCR signals, and potently suppress activated T cells in a contact-dependent and cytokine-independent fashion in vitro.
4622 16126946 Unlike total CD4(+) T cells, prediabetic CD25(+)-depleted CD4(+) T cells are potently diabetogenic when transferred in immunodeficient NOD mice.
4623 16126946 Co-transfer of CD4(+)CD25(+) T cells from thymocytes or peripheral lymphoid tissues of neonatal NOD mice dramatically halts disease development and beta-islet cell lymphocytic infiltration, even when T1D is induced by CD4(+) T cells from BDC2.5 transgenic or diabetic NOD mice.
4624 16126946 Finally, we show that CD4(+)CD25(+) T(reg) preferentially accumulate in inflamed pancreatic environments, where they potently inhibit the antigen-specific expansion and cytokine effector functions of diabetogenic T cells.
4625 16126946 Thus, CD4(+)CD25(+) T cell-mediated regulation is operative in the prediabetic neonatal T cell repertoire and can suppress the diabetogenic process and control the onset of T1D.
4626 16126946 Control of type 1 autoimmune diabetes by naturally occurring CD4+CD25+ regulatory T lymphocytes in neonatal NOD mice.
4627 16126946 Naturally occurring CD4(+)CD25(+) T(reg) (nT(reg)) cells, which typically display potent inhibitory effects on T cell functions in vitro and in vivo, may be defective at controlling autoimmunity in T1D.
4628 16126946 We have examined the relative contribution of CD4(+)CD25(+) nT(reg) cells in the immune regulation of T1D in the NOD mouse model.
4629 16126946 CD4(+)CD25(+) T cells represent 5-10% of CD4(+) thymocytes or peripheral T cells from prediabetic neonatal NOD mice, are anergic to TCR signals, and potently suppress activated T cells in a contact-dependent and cytokine-independent fashion in vitro.
4630 16126946 Unlike total CD4(+) T cells, prediabetic CD25(+)-depleted CD4(+) T cells are potently diabetogenic when transferred in immunodeficient NOD mice.
4631 16126946 Co-transfer of CD4(+)CD25(+) T cells from thymocytes or peripheral lymphoid tissues of neonatal NOD mice dramatically halts disease development and beta-islet cell lymphocytic infiltration, even when T1D is induced by CD4(+) T cells from BDC2.5 transgenic or diabetic NOD mice.
4632 16126946 Finally, we show that CD4(+)CD25(+) T(reg) preferentially accumulate in inflamed pancreatic environments, where they potently inhibit the antigen-specific expansion and cytokine effector functions of diabetogenic T cells.
4633 16126946 Thus, CD4(+)CD25(+) T cell-mediated regulation is operative in the prediabetic neonatal T cell repertoire and can suppress the diabetogenic process and control the onset of T1D.
4634 16126946 Control of type 1 autoimmune diabetes by naturally occurring CD4+CD25+ regulatory T lymphocytes in neonatal NOD mice.
4635 16126946 Naturally occurring CD4(+)CD25(+) T(reg) (nT(reg)) cells, which typically display potent inhibitory effects on T cell functions in vitro and in vivo, may be defective at controlling autoimmunity in T1D.
4636 16126946 We have examined the relative contribution of CD4(+)CD25(+) nT(reg) cells in the immune regulation of T1D in the NOD mouse model.
4637 16126946 CD4(+)CD25(+) T cells represent 5-10% of CD4(+) thymocytes or peripheral T cells from prediabetic neonatal NOD mice, are anergic to TCR signals, and potently suppress activated T cells in a contact-dependent and cytokine-independent fashion in vitro.
4638 16126946 Unlike total CD4(+) T cells, prediabetic CD25(+)-depleted CD4(+) T cells are potently diabetogenic when transferred in immunodeficient NOD mice.
4639 16126946 Co-transfer of CD4(+)CD25(+) T cells from thymocytes or peripheral lymphoid tissues of neonatal NOD mice dramatically halts disease development and beta-islet cell lymphocytic infiltration, even when T1D is induced by CD4(+) T cells from BDC2.5 transgenic or diabetic NOD mice.
4640 16126946 Finally, we show that CD4(+)CD25(+) T(reg) preferentially accumulate in inflamed pancreatic environments, where they potently inhibit the antigen-specific expansion and cytokine effector functions of diabetogenic T cells.
4641 16126946 Thus, CD4(+)CD25(+) T cell-mediated regulation is operative in the prediabetic neonatal T cell repertoire and can suppress the diabetogenic process and control the onset of T1D.
4642 16126946 Control of type 1 autoimmune diabetes by naturally occurring CD4+CD25+ regulatory T lymphocytes in neonatal NOD mice.
4643 16126946 Naturally occurring CD4(+)CD25(+) T(reg) (nT(reg)) cells, which typically display potent inhibitory effects on T cell functions in vitro and in vivo, may be defective at controlling autoimmunity in T1D.
4644 16126946 We have examined the relative contribution of CD4(+)CD25(+) nT(reg) cells in the immune regulation of T1D in the NOD mouse model.
4645 16126946 CD4(+)CD25(+) T cells represent 5-10% of CD4(+) thymocytes or peripheral T cells from prediabetic neonatal NOD mice, are anergic to TCR signals, and potently suppress activated T cells in a contact-dependent and cytokine-independent fashion in vitro.
4646 16126946 Unlike total CD4(+) T cells, prediabetic CD25(+)-depleted CD4(+) T cells are potently diabetogenic when transferred in immunodeficient NOD mice.
4647 16126946 Co-transfer of CD4(+)CD25(+) T cells from thymocytes or peripheral lymphoid tissues of neonatal NOD mice dramatically halts disease development and beta-islet cell lymphocytic infiltration, even when T1D is induced by CD4(+) T cells from BDC2.5 transgenic or diabetic NOD mice.
4648 16126946 Finally, we show that CD4(+)CD25(+) T(reg) preferentially accumulate in inflamed pancreatic environments, where they potently inhibit the antigen-specific expansion and cytokine effector functions of diabetogenic T cells.
4649 16126946 Thus, CD4(+)CD25(+) T cell-mediated regulation is operative in the prediabetic neonatal T cell repertoire and can suppress the diabetogenic process and control the onset of T1D.
4650 16155578 Although major histocompatibility complex (MHC) class II-restricted CD4 T cells are well appreciated for their contribution to peripheral tolerance to tissue allografts, little is known regarding MHC class I-dependent reactivity in this process.
4651 16155578 Here we show a crucial role for host MHC class I-dependent NK cell reactivity for allograft tolerance in mice induced through either costimulation blockade using CD154-specific antibody therapy or by targeting LFA-1 (also known as CD11a).
4652 16155578 Tolerance induction absolutely required host expression of MHC class I, but was independent of CD8 T cell-dependent immunity.
4653 16178866 Clots were analysed immunohistochemically for detection of platelets (CD41a), leucocytes/lymphocytes (CD11b), granulocytes (CD16, lysozyme), neutrophilic granulocytes (neutrophil elastase), eosinophilic granulocytes (NaCN + H(2)O(2)), macrophages (CD68), dendritic cells (CD209/DC-SIGN), B cells (CD20) and T cells (CD4, CD8).
4654 16184198 To determine whether specific lysosomal proteases might influence the outcome of a CD4+ T cell-dependent autoimmune response, we generated mice that lack cathepsin L (Cat L) on the autoimmune diabetes-prone NOD inbred background.
4655 16203996 Mice with a defect in Foxp3, required for the generation and activity of CD4(+)CD25(+) regulatory T cells, exhibit massive lymphoproliferation and severe inflammatory infiltration of multiple organs, in particular the lungs, liver, and skin.
4656 16209918 How do CD4+CD25+ regulatory T cells control autoimmunity?
4657 16209918 The CD4(+)CD25(+)Foxp3(+) Treg subset develops in the thymus, can be induced in the periphery during the course of normal immune responses and utilizes a T cell repertoire skewed towards autoantigens.
4658 16209918 How do CD4+CD25+ regulatory T cells control autoimmunity?
4659 16209918 The CD4(+)CD25(+)Foxp3(+) Treg subset develops in the thymus, can be induced in the periphery during the course of normal immune responses and utilizes a T cell repertoire skewed towards autoantigens.
4660 16236123 Particular interest has focused on the CVB4 non-structural protein P2C, which we previously showed to be a major target of the effector memory anti-CVB4 CD4 T-cell response, and which harbours a region of sequence similarity with the islet autoantigen, glutamic acid decarboxylase (GAD65).
4661 16236123 In the present study therefore we examined the affinity of 20-mer overlapping P2C peptides for soluble HLA-DR4, -DR3, -DQ2 and -DQ8.
4662 16236123 DR4 and DQ8, P =0.0076; DR3 and DQ2 P = 0.002).
4663 16243487 The gene product, Scurfin, is required for the development of CD4+CD25+ T regulatory cells.
4664 16247001 Moreover, neonatal treatment with TNF-alpha resulted in skewed development of a CD8alpha(+)CD11b(-)CD11c(+) DC subset such that TNF-alpha decreases the CD8alpha(+)CD11c(+) DC subset, increases the CD11c(+)CD11b(+) subset, and causes an increase in the expression of CD40 and CD54 on mature DCs capable of inducing immunity.
4665 16247001 Anti-TNF-alpha-treated mice had an increase in the CD8alpha(+)CD11c(+) DCs.
4666 16247001 Notably, adoptively transferred naïve CD4(+) T cells from BDC2.5 T cell receptor transgenic mice proliferated in the pancreatic lymph nodes in TNF-alpha-treated NOD mice but not in anti-TNF-alpha-treated mice.
4667 16249070 Comparative study of GAD65-specific CD4+ T cells in healthy and type 1 diabetic subjects.
4668 16249070 The prevalence of autoreactive CD4+ T cells towards the immunodominant GAD65(555-567) epitope in DR4 healthy and T1D subjects was investigated with class II tetramers.
4669 16249070 A slightly higher percentage of diabetic subjects had GAD65(555-567) tetramer-positive T cells upon GAD65(555-567) peptide stimulation on the total CD4+ T-cell populations compared to healthy subjects.
4670 16249070 In contrast, three quarters of subjects in both groups had tetramer-positive T cells resulting from stimulation of the CD4+CD25+ regulatory T-cell depleted CD4+ T cells.
4671 16249070 These findings suggested that there is no difference in thymic selection of DR4 restricted GAD-reactive T cells amongst healthy and T1D individuals but GAD65(555-567)-reactive T cells have been preferentially activated in diabetic patients.
4672 16249070 Comparative study of GAD65-specific CD4+ T cells in healthy and type 1 diabetic subjects.
4673 16249070 The prevalence of autoreactive CD4+ T cells towards the immunodominant GAD65(555-567) epitope in DR4 healthy and T1D subjects was investigated with class II tetramers.
4674 16249070 A slightly higher percentage of diabetic subjects had GAD65(555-567) tetramer-positive T cells upon GAD65(555-567) peptide stimulation on the total CD4+ T-cell populations compared to healthy subjects.
4675 16249070 In contrast, three quarters of subjects in both groups had tetramer-positive T cells resulting from stimulation of the CD4+CD25+ regulatory T-cell depleted CD4+ T cells.
4676 16249070 These findings suggested that there is no difference in thymic selection of DR4 restricted GAD-reactive T cells amongst healthy and T1D individuals but GAD65(555-567)-reactive T cells have been preferentially activated in diabetic patients.
4677 16249070 Comparative study of GAD65-specific CD4+ T cells in healthy and type 1 diabetic subjects.
4678 16249070 The prevalence of autoreactive CD4+ T cells towards the immunodominant GAD65(555-567) epitope in DR4 healthy and T1D subjects was investigated with class II tetramers.
4679 16249070 A slightly higher percentage of diabetic subjects had GAD65(555-567) tetramer-positive T cells upon GAD65(555-567) peptide stimulation on the total CD4+ T-cell populations compared to healthy subjects.
4680 16249070 In contrast, three quarters of subjects in both groups had tetramer-positive T cells resulting from stimulation of the CD4+CD25+ regulatory T-cell depleted CD4+ T cells.
4681 16249070 These findings suggested that there is no difference in thymic selection of DR4 restricted GAD-reactive T cells amongst healthy and T1D individuals but GAD65(555-567)-reactive T cells have been preferentially activated in diabetic patients.
4682 16249070 Comparative study of GAD65-specific CD4+ T cells in healthy and type 1 diabetic subjects.
4683 16249070 The prevalence of autoreactive CD4+ T cells towards the immunodominant GAD65(555-567) epitope in DR4 healthy and T1D subjects was investigated with class II tetramers.
4684 16249070 A slightly higher percentage of diabetic subjects had GAD65(555-567) tetramer-positive T cells upon GAD65(555-567) peptide stimulation on the total CD4+ T-cell populations compared to healthy subjects.
4685 16249070 In contrast, three quarters of subjects in both groups had tetramer-positive T cells resulting from stimulation of the CD4+CD25+ regulatory T-cell depleted CD4+ T cells.
4686 16249070 These findings suggested that there is no difference in thymic selection of DR4 restricted GAD-reactive T cells amongst healthy and T1D individuals but GAD65(555-567)-reactive T cells have been preferentially activated in diabetic patients.
4687 16260488 To investigate the specificity of proinsulin-specific T cells in T1D, we isolated human CD4(+) T cell clones to proinsulin from the blood of a donor who had T1D.
4688 16260488 CD4(+) T cell clones that recognized this epitope were isolated from an HLA DR4(+) child with autoantibodies to insulin, and therefore, at risk for T1D, but not from two healthy HLA DR4(+) donors.
4689 16260488 To investigate the specificity of proinsulin-specific T cells in T1D, we isolated human CD4(+) T cell clones to proinsulin from the blood of a donor who had T1D.
4690 16260488 CD4(+) T cell clones that recognized this epitope were isolated from an HLA DR4(+) child with autoantibodies to insulin, and therefore, at risk for T1D, but not from two healthy HLA DR4(+) donors.
4691 16263129 Supernatant samples were analysed by ELISA for TNFalpha, IFNgamma and IL-10 production.
4692 16263129 Plastic adhesion decreased the macrophage numbers by approximately 30% and CD4(+)CD25(+) cells by about 60%.
4693 16263129 This was accompanied by increased medium levels of TNFalpha, IFNgamma and IL-10, which suggest that either CD4(+)CD25(+) cells, macrophages, or both, down-regulate production of both Th1 and certain Th2 cytokines.
4694 16263129 Supernatant samples were analysed by ELISA for TNFalpha, IFNgamma and IL-10 production.
4695 16263129 Plastic adhesion decreased the macrophage numbers by approximately 30% and CD4(+)CD25(+) cells by about 60%.
4696 16263129 This was accompanied by increased medium levels of TNFalpha, IFNgamma and IL-10, which suggest that either CD4(+)CD25(+) cells, macrophages, or both, down-regulate production of both Th1 and certain Th2 cytokines.
4697 16263242 GAD65- and proinsulin-specific CD4+ T-cells detected by MHC class II tetramers in peripheral blood of type 1 diabetes patients and at-risk subjects.
4698 16263242 In this study we have analyzed the prevalence of glutamate decarboxylase 65 (GAD65)- and proinsulin-specific CD4(+) T-cells in type 1 diabetes patients, at-risk subjects and in HLA-matched control children.
4699 16263242 Peripheral blood mononuclear cells were cultured in the presence of two different GAD65 peptides (555-567, 557I and 274-286) or with a proinsulin (B24-C36) peptide for 10-11days.
4700 16263242 Our results show that 11 of 18 (61%) type 1 diabetes patients and 7 of the 20 (35%) at-risk subjects were positive for one of the three GAD65 or proinsulin-containing tetramers, whereas only 2 of 21 (9.5%) controls had tetramer binding cells (p = 0.0007 type 1 diabetes vs. controls and p = 0.0488 at-risk subjects vs. controls, Chi-square test).
4701 16263242 In conclusion, type 1 diabetes patients and at-risk subjects have a significantly higher prevalence of GAD65- and proinsulin-specific CD4(+) T-cells than the control subjects.
4702 16263242 GAD65- and proinsulin-specific CD4+ T-cells detected by MHC class II tetramers in peripheral blood of type 1 diabetes patients and at-risk subjects.
4703 16263242 In this study we have analyzed the prevalence of glutamate decarboxylase 65 (GAD65)- and proinsulin-specific CD4(+) T-cells in type 1 diabetes patients, at-risk subjects and in HLA-matched control children.
4704 16263242 Peripheral blood mononuclear cells were cultured in the presence of two different GAD65 peptides (555-567, 557I and 274-286) or with a proinsulin (B24-C36) peptide for 10-11days.
4705 16263242 Our results show that 11 of 18 (61%) type 1 diabetes patients and 7 of the 20 (35%) at-risk subjects were positive for one of the three GAD65 or proinsulin-containing tetramers, whereas only 2 of 21 (9.5%) controls had tetramer binding cells (p = 0.0007 type 1 diabetes vs. controls and p = 0.0488 at-risk subjects vs. controls, Chi-square test).
4706 16263242 In conclusion, type 1 diabetes patients and at-risk subjects have a significantly higher prevalence of GAD65- and proinsulin-specific CD4(+) T-cells than the control subjects.
4707 16263242 GAD65- and proinsulin-specific CD4+ T-cells detected by MHC class II tetramers in peripheral blood of type 1 diabetes patients and at-risk subjects.
4708 16263242 In this study we have analyzed the prevalence of glutamate decarboxylase 65 (GAD65)- and proinsulin-specific CD4(+) T-cells in type 1 diabetes patients, at-risk subjects and in HLA-matched control children.
4709 16263242 Peripheral blood mononuclear cells were cultured in the presence of two different GAD65 peptides (555-567, 557I and 274-286) or with a proinsulin (B24-C36) peptide for 10-11days.
4710 16263242 Our results show that 11 of 18 (61%) type 1 diabetes patients and 7 of the 20 (35%) at-risk subjects were positive for one of the three GAD65 or proinsulin-containing tetramers, whereas only 2 of 21 (9.5%) controls had tetramer binding cells (p = 0.0007 type 1 diabetes vs. controls and p = 0.0488 at-risk subjects vs. controls, Chi-square test).
4711 16263242 In conclusion, type 1 diabetes patients and at-risk subjects have a significantly higher prevalence of GAD65- and proinsulin-specific CD4(+) T-cells than the control subjects.
4712 16263243 CD4(+)hCD90(+) cells had a higher capacity to secret IFN-gamma than CD4(+)hCD90(-) cells in an autoantigen-specific manner.
4713 16280647 Fluorochrome-labeled recombinant MHC class II-peptide reagents function as soluble mimetics of this interaction, bind to their specific TCR, and allow for detection of antigen-specific CD4+ T cells.
4714 16280647 Several issues are currently being addressed to improve the performance of these T cell assays: enrichment steps for better sensitivity, multiplexing of several islet epitopes, simultaneous monitoring of CD4+ and CD8+ responses, detection of low avidity T cells, combination of quantitative (number of positive cells) and qualitative (cytokine secretion, naive/memory phenotype) readouts.
4715 16280647 CD4+ T cells are key effectors of autoimmunity, and these MHC class II peptide reagents, through their signaling properties, might also provide therapeutics to block the autoimmune process at its onset, analogous to the use of OKT3gammao1(AlaAla) anti-CD3 antibody but in an antigen-specific fashion.
4716 16280647 Fluorochrome-labeled recombinant MHC class II-peptide reagents function as soluble mimetics of this interaction, bind to their specific TCR, and allow for detection of antigen-specific CD4+ T cells.
4717 16280647 Several issues are currently being addressed to improve the performance of these T cell assays: enrichment steps for better sensitivity, multiplexing of several islet epitopes, simultaneous monitoring of CD4+ and CD8+ responses, detection of low avidity T cells, combination of quantitative (number of positive cells) and qualitative (cytokine secretion, naive/memory phenotype) readouts.
4718 16280647 CD4+ T cells are key effectors of autoimmunity, and these MHC class II peptide reagents, through their signaling properties, might also provide therapeutics to block the autoimmune process at its onset, analogous to the use of OKT3gammao1(AlaAla) anti-CD3 antibody but in an antigen-specific fashion.
4719 16280647 Fluorochrome-labeled recombinant MHC class II-peptide reagents function as soluble mimetics of this interaction, bind to their specific TCR, and allow for detection of antigen-specific CD4+ T cells.
4720 16280647 Several issues are currently being addressed to improve the performance of these T cell assays: enrichment steps for better sensitivity, multiplexing of several islet epitopes, simultaneous monitoring of CD4+ and CD8+ responses, detection of low avidity T cells, combination of quantitative (number of positive cells) and qualitative (cytokine secretion, naive/memory phenotype) readouts.
4721 16280647 CD4+ T cells are key effectors of autoimmunity, and these MHC class II peptide reagents, through their signaling properties, might also provide therapeutics to block the autoimmune process at its onset, analogous to the use of OKT3gammao1(AlaAla) anti-CD3 antibody but in an antigen-specific fashion.
4722 16280652 While this process takes place, beta cell antigen-specific CD8+ T cells are activated by IL-2 produced by the activated TH1 CD4+ T cells, differentiate into cytotoxic T cells and are recruited into the pancreatic islets.
4723 16280652 These activated TH1 CD4+ T cells and CD8+ cytotoxic T cells are involved in the destruction of beta cells.
4724 16280652 Thus, activated macrophages, TH1 CD4+ T cells, and beta cell-cytotoxic CD8+ T cells act synergistically to destroy beta cells, resulting in autoimmune type 1 diabetes.
4725 16280652 While this process takes place, beta cell antigen-specific CD8+ T cells are activated by IL-2 produced by the activated TH1 CD4+ T cells, differentiate into cytotoxic T cells and are recruited into the pancreatic islets.
4726 16280652 These activated TH1 CD4+ T cells and CD8+ cytotoxic T cells are involved in the destruction of beta cells.
4727 16280652 Thus, activated macrophages, TH1 CD4+ T cells, and beta cell-cytotoxic CD8+ T cells act synergistically to destroy beta cells, resulting in autoimmune type 1 diabetes.
4728 16280652 While this process takes place, beta cell antigen-specific CD8+ T cells are activated by IL-2 produced by the activated TH1 CD4+ T cells, differentiate into cytotoxic T cells and are recruited into the pancreatic islets.
4729 16280652 These activated TH1 CD4+ T cells and CD8+ cytotoxic T cells are involved in the destruction of beta cells.
4730 16280652 Thus, activated macrophages, TH1 CD4+ T cells, and beta cell-cytotoxic CD8+ T cells act synergistically to destroy beta cells, resulting in autoimmune type 1 diabetes.
4731 16301684 Effector function of diabetogenic CD4 Th1 T cell clones: a central role for TNF-alpha.
4732 16301684 We have investigated cytokine production both in vitro and in vivo in a panel of diabetogenic CD4 Th1 T cell clones derived from the NOD mouse.
4733 16301684 Ex vivo intracellular cytokine staining demonstrated that two important inflammatory cytokines, IFN-gamma and TNF-alpha, were being made by these T cells recovered from the pancreas 6 days following adoptive transfer.
4734 16301684 Similar analyses in other models demonstrated that disease induced by CD4 T cell clones closely resembles spontaneous autoimmune diabetes in which both CD4 and CD8 T cells are required.
4735 16301684 Effector function of diabetogenic CD4 Th1 T cell clones: a central role for TNF-alpha.
4736 16301684 We have investigated cytokine production both in vitro and in vivo in a panel of diabetogenic CD4 Th1 T cell clones derived from the NOD mouse.
4737 16301684 Ex vivo intracellular cytokine staining demonstrated that two important inflammatory cytokines, IFN-gamma and TNF-alpha, were being made by these T cells recovered from the pancreas 6 days following adoptive transfer.
4738 16301684 Similar analyses in other models demonstrated that disease induced by CD4 T cell clones closely resembles spontaneous autoimmune diabetes in which both CD4 and CD8 T cells are required.
4739 16301684 Effector function of diabetogenic CD4 Th1 T cell clones: a central role for TNF-alpha.
4740 16301684 We have investigated cytokine production both in vitro and in vivo in a panel of diabetogenic CD4 Th1 T cell clones derived from the NOD mouse.
4741 16301684 Ex vivo intracellular cytokine staining demonstrated that two important inflammatory cytokines, IFN-gamma and TNF-alpha, were being made by these T cells recovered from the pancreas 6 days following adoptive transfer.
4742 16301684 Similar analyses in other models demonstrated that disease induced by CD4 T cell clones closely resembles spontaneous autoimmune diabetes in which both CD4 and CD8 T cells are required.
4743 16301745 Where CD4+CD25+ T reg cells impinge on autoimmune diabetes.
4744 16301745 Foxp3 is required for the generation and activity of CD4(+)CD25(+) regulatory T (T reg) cells, which are important controllers of autoimmunity, including type-1 diabetes.
4745 16301745 Where CD4+CD25+ T reg cells impinge on autoimmune diabetes.
4746 16301745 Foxp3 is required for the generation and activity of CD4(+)CD25(+) regulatory T (T reg) cells, which are important controllers of autoimmunity, including type-1 diabetes.
4747 16304639 We investigated whether iNKT activation with alpha-GalCer was protective in collagen-induced arthritis (CIA) in DBA/1 mice, a standard model of rheumatoid arthritis.
4748 16304639 Here, we have shown that in vivo iNKT cell function was altered in DBA/1 mice since stimulation with alpha-GalCer led to decreased IL-4 and IFN-gamma levels in sera, as compared with C57BL/6 mice. alpha-GalCer induced a clear-cut diminution of clinical and histological arthritides.
4749 16304639 An anti-IL-10 receptor antibody abrogated the protective effect of alpha-GalCer, suggesting a key role for IL-10 in the protection against CIA by activated iNKT cells.
4750 16304639 Confirming these data, disease protection conferred by alpha-GalCer correlated with the ability of LN CD4+ cells to secrete larger amounts of IL-10.
4751 16306354 Moreover, HA-specific CD4+ T-cells from anti-DEC-HA-treated INS-HA/TCR-HA mice exhibited increased expression of Foxp3, cytotoxic T-lymphocyte-associated antigen-4, and the immunosuppressive cytokines interleukin-10 and transforming growth factor-beta.
4752 16311599 Islet antigen-specific CD4(+)CD25(-) T helper cells (T(H) cells) and T(reg) cells swarmed and arrested in the presence of autoantigens.
4753 16313366 The NOD-derived islet-reactive CD4(+) T cell clone, BDC-2.5, is able to transfer diabetes to neonatal non-obese diabetic (NOD) mice but is unable to transfer disease to either adult NOD or NOD scid recipients.
4754 16318983 TGF-beta dependent and independent mechanisms have been described involving CD4(+) as well as CD8(+) T cells.
4755 16318984 This autoimmune disease is characterized by the selective loss of the insulin-producing beta cells via the cumulative effects of autoantigen-specific CD4(+) and CD8(+) T cells, autoantibodies, and activated antigen-presenting cells.
4756 16329191 Specific antiviral (self) CD8 T cells are mandatory for disease, but CD4 T cells are not.
4757 16329191 In this instance, diabetes can occur in the absence of infection if interferon gamma or B7.1 molecules are also expressed in the islets but not when IL-2, IL-4, IL-10, or IL-12 is similarly expressed.
4758 16329191 In contrast, both CD8 and CD4 antiviral (self) specific T cells are required when the self "viral" transgene is expressed concomitantly in beta cells and in the thymus.
4759 16329191 Specific antiviral (self) CD8 T cells are mandatory for disease, but CD4 T cells are not.
4760 16329191 In this instance, diabetes can occur in the absence of infection if interferon gamma or B7.1 molecules are also expressed in the islets but not when IL-2, IL-4, IL-10, or IL-12 is similarly expressed.
4761 16329191 In contrast, both CD8 and CD4 antiviral (self) specific T cells are required when the self "viral" transgene is expressed concomitantly in beta cells and in the thymus.
4762 16352552 Following virus infection, we profiled primary, memory, and secondary CD8+ and CD4+ T-cell responses directed against eight different viral epitopes.
4763 16380473 Costimulation blockade of both inducible costimulator and CD40 ligand induces dominant tolerance to islet allografts and prevents spontaneous autoimmune diabetes in the NOD mouse.
4764 16380473 Using a fully allogeneic mouse model, we tested the effectiveness of the combined blockade of the CD40 ligand and the inducible costimulator (ICOS) on islet allograft survival and in the prevention of autoimmune diabetes in the NOD mouse.
4765 16380473 Recipients treated with blocking monoclonal antibodies (mAbs) to ICOS and the CD40 ligand had significant prolongation of graft survival, with 26 of 28 functioning for >200 days.
4766 16380473 The immunohistology of tolerant grafts demonstrated the presence of CD4(+)CD25(+) T-cells expressing Foxp3, and islet/kidney composite grafts from tolerant mice, but not from mice lacking lymphocytes, were accepted indefinitely when transplanted into naïve B6 mice, suggesting that recipient T-cells were necessary to generate dominant tolerance.
4767 16380473 These data demonstrate that the blockade of CD40 ligand and ICOS signaling induces islet allograft tolerance involving a dominant mechanism associated with intragraft regulatory cells and prevents autoimmune diabetes in NOD mice.
4768 16380475 CD4(+) T-cells from rapamycin plus IL-10-treated mice transferred antigen-specific tolerance in mice that received new transplants.
4769 16380489 Interleukin-7 is a survival factor for CD4+ CD25+ T-cells and is expressed by diabetes-suppressive dendritic cells.
4770 16380489 Recent studies demonstrate that immunoregulatory dendritic cells (iDCs) confer immune hyporesponsiveness in part through CD4(+) CD25(+) T regulatory cells (Tregs).
4771 16380489 Herein, we provide evidence to support the hypothesis that dendritic cells derived from NOD mice and engineered ex vivo to exhibit suppressed expression of the CD40, CD80, and CD86 costimulatory molecules motivate an increase in the prevalence of regulatory CD4(+) CD25(+) T-cells via interleukin (IL)-7.
4772 16380489 Exogenous addition of IL-7 to NOD T-cells did not promote expansion or proliferation, but instead selectively maintained the number of CD4(+) CD25(+) T-cells by inhibiting activation of apoptosis in these cells.
4773 16380489 In vitro, IL-7 receptor alpha-chain (IL-7Ralpha) was expressed at significantly higher levels on CD4(+) CD25(+) T-cells compared with CD4(+) CD25(-) T-cells irrespective of resting or stimulated state.
4774 16380489 In vivo, CD4(+) CD25(+) T-cells obtained from NOD-scid mice reconstituted with ex vivo engineered iDCs and NOD splenocytes expressed significantly higher levels of IL-7Ralpha compared with levels in the CD4(+) CD25(-) subset, especially in diabetes-suppressive dendritic cell-administered NOD-scid recipients.
4775 16380489 Taken together, our data suggest a novel mechanism by which iDCs delay autoimmunity through the CD4(+) CD25(+) Treg pathway and suggest IL-7 as a survival factor for these putative Tregs, which express the alpha-chain of its receptor at considerably higher levels than CD4(+) CD25(-) T-cells.
4776 16380489 Interleukin-7 is a survival factor for CD4+ CD25+ T-cells and is expressed by diabetes-suppressive dendritic cells.
4777 16380489 Recent studies demonstrate that immunoregulatory dendritic cells (iDCs) confer immune hyporesponsiveness in part through CD4(+) CD25(+) T regulatory cells (Tregs).
4778 16380489 Herein, we provide evidence to support the hypothesis that dendritic cells derived from NOD mice and engineered ex vivo to exhibit suppressed expression of the CD40, CD80, and CD86 costimulatory molecules motivate an increase in the prevalence of regulatory CD4(+) CD25(+) T-cells via interleukin (IL)-7.
4779 16380489 Exogenous addition of IL-7 to NOD T-cells did not promote expansion or proliferation, but instead selectively maintained the number of CD4(+) CD25(+) T-cells by inhibiting activation of apoptosis in these cells.
4780 16380489 In vitro, IL-7 receptor alpha-chain (IL-7Ralpha) was expressed at significantly higher levels on CD4(+) CD25(+) T-cells compared with CD4(+) CD25(-) T-cells irrespective of resting or stimulated state.
4781 16380489 In vivo, CD4(+) CD25(+) T-cells obtained from NOD-scid mice reconstituted with ex vivo engineered iDCs and NOD splenocytes expressed significantly higher levels of IL-7Ralpha compared with levels in the CD4(+) CD25(-) subset, especially in diabetes-suppressive dendritic cell-administered NOD-scid recipients.
4782 16380489 Taken together, our data suggest a novel mechanism by which iDCs delay autoimmunity through the CD4(+) CD25(+) Treg pathway and suggest IL-7 as a survival factor for these putative Tregs, which express the alpha-chain of its receptor at considerably higher levels than CD4(+) CD25(-) T-cells.
4783 16380489 Interleukin-7 is a survival factor for CD4+ CD25+ T-cells and is expressed by diabetes-suppressive dendritic cells.
4784 16380489 Recent studies demonstrate that immunoregulatory dendritic cells (iDCs) confer immune hyporesponsiveness in part through CD4(+) CD25(+) T regulatory cells (Tregs).
4785 16380489 Herein, we provide evidence to support the hypothesis that dendritic cells derived from NOD mice and engineered ex vivo to exhibit suppressed expression of the CD40, CD80, and CD86 costimulatory molecules motivate an increase in the prevalence of regulatory CD4(+) CD25(+) T-cells via interleukin (IL)-7.
4786 16380489 Exogenous addition of IL-7 to NOD T-cells did not promote expansion or proliferation, but instead selectively maintained the number of CD4(+) CD25(+) T-cells by inhibiting activation of apoptosis in these cells.
4787 16380489 In vitro, IL-7 receptor alpha-chain (IL-7Ralpha) was expressed at significantly higher levels on CD4(+) CD25(+) T-cells compared with CD4(+) CD25(-) T-cells irrespective of resting or stimulated state.
4788 16380489 In vivo, CD4(+) CD25(+) T-cells obtained from NOD-scid mice reconstituted with ex vivo engineered iDCs and NOD splenocytes expressed significantly higher levels of IL-7Ralpha compared with levels in the CD4(+) CD25(-) subset, especially in diabetes-suppressive dendritic cell-administered NOD-scid recipients.
4789 16380489 Taken together, our data suggest a novel mechanism by which iDCs delay autoimmunity through the CD4(+) CD25(+) Treg pathway and suggest IL-7 as a survival factor for these putative Tregs, which express the alpha-chain of its receptor at considerably higher levels than CD4(+) CD25(-) T-cells.
4790 16380489 Interleukin-7 is a survival factor for CD4+ CD25+ T-cells and is expressed by diabetes-suppressive dendritic cells.
4791 16380489 Recent studies demonstrate that immunoregulatory dendritic cells (iDCs) confer immune hyporesponsiveness in part through CD4(+) CD25(+) T regulatory cells (Tregs).
4792 16380489 Herein, we provide evidence to support the hypothesis that dendritic cells derived from NOD mice and engineered ex vivo to exhibit suppressed expression of the CD40, CD80, and CD86 costimulatory molecules motivate an increase in the prevalence of regulatory CD4(+) CD25(+) T-cells via interleukin (IL)-7.
4793 16380489 Exogenous addition of IL-7 to NOD T-cells did not promote expansion or proliferation, but instead selectively maintained the number of CD4(+) CD25(+) T-cells by inhibiting activation of apoptosis in these cells.
4794 16380489 In vitro, IL-7 receptor alpha-chain (IL-7Ralpha) was expressed at significantly higher levels on CD4(+) CD25(+) T-cells compared with CD4(+) CD25(-) T-cells irrespective of resting or stimulated state.
4795 16380489 In vivo, CD4(+) CD25(+) T-cells obtained from NOD-scid mice reconstituted with ex vivo engineered iDCs and NOD splenocytes expressed significantly higher levels of IL-7Ralpha compared with levels in the CD4(+) CD25(-) subset, especially in diabetes-suppressive dendritic cell-administered NOD-scid recipients.
4796 16380489 Taken together, our data suggest a novel mechanism by which iDCs delay autoimmunity through the CD4(+) CD25(+) Treg pathway and suggest IL-7 as a survival factor for these putative Tregs, which express the alpha-chain of its receptor at considerably higher levels than CD4(+) CD25(-) T-cells.
4797 16380489 Interleukin-7 is a survival factor for CD4+ CD25+ T-cells and is expressed by diabetes-suppressive dendritic cells.
4798 16380489 Recent studies demonstrate that immunoregulatory dendritic cells (iDCs) confer immune hyporesponsiveness in part through CD4(+) CD25(+) T regulatory cells (Tregs).
4799 16380489 Herein, we provide evidence to support the hypothesis that dendritic cells derived from NOD mice and engineered ex vivo to exhibit suppressed expression of the CD40, CD80, and CD86 costimulatory molecules motivate an increase in the prevalence of regulatory CD4(+) CD25(+) T-cells via interleukin (IL)-7.
4800 16380489 Exogenous addition of IL-7 to NOD T-cells did not promote expansion or proliferation, but instead selectively maintained the number of CD4(+) CD25(+) T-cells by inhibiting activation of apoptosis in these cells.
4801 16380489 In vitro, IL-7 receptor alpha-chain (IL-7Ralpha) was expressed at significantly higher levels on CD4(+) CD25(+) T-cells compared with CD4(+) CD25(-) T-cells irrespective of resting or stimulated state.
4802 16380489 In vivo, CD4(+) CD25(+) T-cells obtained from NOD-scid mice reconstituted with ex vivo engineered iDCs and NOD splenocytes expressed significantly higher levels of IL-7Ralpha compared with levels in the CD4(+) CD25(-) subset, especially in diabetes-suppressive dendritic cell-administered NOD-scid recipients.
4803 16380489 Taken together, our data suggest a novel mechanism by which iDCs delay autoimmunity through the CD4(+) CD25(+) Treg pathway and suggest IL-7 as a survival factor for these putative Tregs, which express the alpha-chain of its receptor at considerably higher levels than CD4(+) CD25(-) T-cells.
4804 16380489 Interleukin-7 is a survival factor for CD4+ CD25+ T-cells and is expressed by diabetes-suppressive dendritic cells.
4805 16380489 Recent studies demonstrate that immunoregulatory dendritic cells (iDCs) confer immune hyporesponsiveness in part through CD4(+) CD25(+) T regulatory cells (Tregs).
4806 16380489 Herein, we provide evidence to support the hypothesis that dendritic cells derived from NOD mice and engineered ex vivo to exhibit suppressed expression of the CD40, CD80, and CD86 costimulatory molecules motivate an increase in the prevalence of regulatory CD4(+) CD25(+) T-cells via interleukin (IL)-7.
4807 16380489 Exogenous addition of IL-7 to NOD T-cells did not promote expansion or proliferation, but instead selectively maintained the number of CD4(+) CD25(+) T-cells by inhibiting activation of apoptosis in these cells.
4808 16380489 In vitro, IL-7 receptor alpha-chain (IL-7Ralpha) was expressed at significantly higher levels on CD4(+) CD25(+) T-cells compared with CD4(+) CD25(-) T-cells irrespective of resting or stimulated state.
4809 16380489 In vivo, CD4(+) CD25(+) T-cells obtained from NOD-scid mice reconstituted with ex vivo engineered iDCs and NOD splenocytes expressed significantly higher levels of IL-7Ralpha compared with levels in the CD4(+) CD25(-) subset, especially in diabetes-suppressive dendritic cell-administered NOD-scid recipients.
4810 16380489 Taken together, our data suggest a novel mechanism by which iDCs delay autoimmunity through the CD4(+) CD25(+) Treg pathway and suggest IL-7 as a survival factor for these putative Tregs, which express the alpha-chain of its receptor at considerably higher levels than CD4(+) CD25(-) T-cells.
4811 16380489 Interleukin-7 is a survival factor for CD4+ CD25+ T-cells and is expressed by diabetes-suppressive dendritic cells.
4812 16380489 Recent studies demonstrate that immunoregulatory dendritic cells (iDCs) confer immune hyporesponsiveness in part through CD4(+) CD25(+) T regulatory cells (Tregs).
4813 16380489 Herein, we provide evidence to support the hypothesis that dendritic cells derived from NOD mice and engineered ex vivo to exhibit suppressed expression of the CD40, CD80, and CD86 costimulatory molecules motivate an increase in the prevalence of regulatory CD4(+) CD25(+) T-cells via interleukin (IL)-7.
4814 16380489 Exogenous addition of IL-7 to NOD T-cells did not promote expansion or proliferation, but instead selectively maintained the number of CD4(+) CD25(+) T-cells by inhibiting activation of apoptosis in these cells.
4815 16380489 In vitro, IL-7 receptor alpha-chain (IL-7Ralpha) was expressed at significantly higher levels on CD4(+) CD25(+) T-cells compared with CD4(+) CD25(-) T-cells irrespective of resting or stimulated state.
4816 16380489 In vivo, CD4(+) CD25(+) T-cells obtained from NOD-scid mice reconstituted with ex vivo engineered iDCs and NOD splenocytes expressed significantly higher levels of IL-7Ralpha compared with levels in the CD4(+) CD25(-) subset, especially in diabetes-suppressive dendritic cell-administered NOD-scid recipients.
4817 16380489 Taken together, our data suggest a novel mechanism by which iDCs delay autoimmunity through the CD4(+) CD25(+) Treg pathway and suggest IL-7 as a survival factor for these putative Tregs, which express the alpha-chain of its receptor at considerably higher levels than CD4(+) CD25(-) T-cells.
4818 16380490 No significant differences in plasma corticosterone, splenic CD4(+) or CD8(+) T-cell percentages, or functions of CD3(+) T-cells in vitro distinguished NOD wild-type from mutant mice.
4819 16380490 This correlated with significantly reduced (P < 0.01) frequencies of insulin and islet-specific glucose-6-phosphatase catalytic subunit-related protein-reactive CD8(+) T-effector clonotypes in mutant mice.
4820 16380490 In conclusion, metabolic disturbances elicited by a type 2 diabetes syndrome (insulin and/or leptin resistance, but not hypercorticism) appear to suppress type 1 diabetes development in NOD-Lepr(db-5J)/Lt by inhibiting activation of T-effector cells.
4821 16380492 The diabetes type 1 locus Idd6 modulates activity of CD4+CD25+ regulatory T-cells.
4822 16380492 Our transfer experiments using total splenocytes and purified T-cells demonstrated that the locus specifically controls the efficiency of disease protection mediated by the regulatory CD4(+)CD25(+) T-cell subset.
4823 16380492 The diabetes type 1 locus Idd6 modulates activity of CD4+CD25+ regulatory T-cells.
4824 16380492 Our transfer experiments using total splenocytes and purified T-cells demonstrated that the locus specifically controls the efficiency of disease protection mediated by the regulatory CD4(+)CD25(+) T-cell subset.
4825 16387141 We analyzed the immunological parameters of CD4/CD8 T lymphocyte ratios; islet cell antibodies (ICAs) and insulin antibodies (IAs).
4826 16387141 We observed that the CD4+/CD8+ T-cell ratio increased, peaking on day 90, in similar fashion in both groups: day -1: A = 1.18 +/- 0.03 versus B = 1.19 +/- 0.04; on day 90: A = 1.79 +/- 0.09, versus B = 1.75 +/- 0.08 (P = NS) immediately before the decrease in C-peptide levels.
4827 16387141 The CD4/CD8 ratio increased as the C-peptide level decreased, peaking on day 90 at the time of a decrease in C-peptide.
4828 16387141 We analyzed the immunological parameters of CD4/CD8 T lymphocyte ratios; islet cell antibodies (ICAs) and insulin antibodies (IAs).
4829 16387141 We observed that the CD4+/CD8+ T-cell ratio increased, peaking on day 90, in similar fashion in both groups: day -1: A = 1.18 +/- 0.03 versus B = 1.19 +/- 0.04; on day 90: A = 1.79 +/- 0.09, versus B = 1.75 +/- 0.08 (P = NS) immediately before the decrease in C-peptide levels.
4830 16387141 The CD4/CD8 ratio increased as the C-peptide level decreased, peaking on day 90 at the time of a decrease in C-peptide.
4831 16387141 We analyzed the immunological parameters of CD4/CD8 T lymphocyte ratios; islet cell antibodies (ICAs) and insulin antibodies (IAs).
4832 16387141 We observed that the CD4+/CD8+ T-cell ratio increased, peaking on day 90, in similar fashion in both groups: day -1: A = 1.18 +/- 0.03 versus B = 1.19 +/- 0.04; on day 90: A = 1.79 +/- 0.09, versus B = 1.75 +/- 0.08 (P = NS) immediately before the decrease in C-peptide levels.
4833 16387141 The CD4/CD8 ratio increased as the C-peptide level decreased, peaking on day 90 at the time of a decrease in C-peptide.
4834 16393560 [CD4 + CD25 + regulatory T cells and their importance to human illnesses].
4835 16409156 Cd4+Cd25+ regulatory T cells and their therapeutic potential.
4836 16409156 A recently characterized subset of T cells, identified by their cell surface expression of CD4 and CD25, is critical in regulating the function of other immune cells and preventing potentially harmful autoimmune responses.
4837 16409156 Cd4+Cd25+ regulatory T cells and their therapeutic potential.
4838 16409156 A recently characterized subset of T cells, identified by their cell surface expression of CD4 and CD25, is critical in regulating the function of other immune cells and preventing potentially harmful autoimmune responses.
4839 16415097 Moreover, no significant differences were detected in lymphocyte sub-populations and mitogen-induced CD4(+) and CD8(+) proliferative responses between control and treatment groups.
4840 16437243 We analyzed, in a cross-sectional pilot study, HIV-antigen-stimulated IL-10 and tumor necrosis factor alpha (TNFalpha) production, and intracellular concentration (ICC), as well as B7-H1 expression, a marker preferentially presented by IL-10-producing cells, in 20 ARV-treated individuals in whom diabetes did (n=10; diabetes mellitus, DM) or did not (n=10; controls) develop.
4841 16437243 Results showed that: (1) IL-10 production was lower; (2) IL-10 ICC was reduced; (3) B7-H1-expressing CD19(+) cells were diminished; and (4) TNFalpha production and ICC by CD4(+) T cells was augmented in DM patients.
4842 16458533 CD4(+)CD25(+)Foxp3(+) regulatory T cells (Treg) are critical for the regulation of tolerance and have shown enormous potential in suppressing pathological immune responses in autoimmune disease, transplantation, and graft-versus-host disease (GVHD).
4843 16469503 Dendritic cells (DCs) are important for several aspects of the development and function of CD4(+) CD25(+) regulatory T cells (Tregs), which are critical for maintaining peripheral tolerance and preventing autoimmunity.
4844 16469503 In cultures from human thymus, dendritic cells (DCs) conditioned with thymic stromal lymphopoietin (TSLP) mediate the production of Tregs from CD4(+) CD25(-) thymocytes.
4845 16469503 Dendritic cells (DCs) are important for several aspects of the development and function of CD4(+) CD25(+) regulatory T cells (Tregs), which are critical for maintaining peripheral tolerance and preventing autoimmunity.
4846 16469503 In cultures from human thymus, dendritic cells (DCs) conditioned with thymic stromal lymphopoietin (TSLP) mediate the production of Tregs from CD4(+) CD25(-) thymocytes.
4847 16476010 Elimination of CD4+ CD25+ regulatory T cells breaks down reovirus type 2-triggered and CpG ODN-induced prolonged mild autoimmune insulitis in DBA/1 mice.
4848 16476010 Compared with the control mice, newborn mice treated with monoclonal antibody (MoAb) against mouse CD25(+) CD4(+) T cells together with Reo-2 and CpG ODN greatly reduced the absolute number of splenic CD25(+) T cells and resulted in the development of severe insulitis, leading to an overt early diabetes.
4849 16476010 Moreover, the treatment of the MoAb increased production of interferon-gamma (IFN-gamma) and decreased that of interleukin-4 (IL-4) and transforming growth factor-beta1 (TGF-beta1) and developed high titre of autoantibodies against pancreatic islet cells.
4850 16476010 These evidences suggest that CD4(+) CD25(+) T cell may, at least in part, maintain tolerance to Reo-2-triggered and CpG ODN-induced prolonged mild Th1-dependent autoimmune insulitis, leading to the overt disease.
4851 16476010 Elimination of CD4+ CD25+ regulatory T cells breaks down reovirus type 2-triggered and CpG ODN-induced prolonged mild autoimmune insulitis in DBA/1 mice.
4852 16476010 Compared with the control mice, newborn mice treated with monoclonal antibody (MoAb) against mouse CD25(+) CD4(+) T cells together with Reo-2 and CpG ODN greatly reduced the absolute number of splenic CD25(+) T cells and resulted in the development of severe insulitis, leading to an overt early diabetes.
4853 16476010 Moreover, the treatment of the MoAb increased production of interferon-gamma (IFN-gamma) and decreased that of interleukin-4 (IL-4) and transforming growth factor-beta1 (TGF-beta1) and developed high titre of autoantibodies against pancreatic islet cells.
4854 16476010 These evidences suggest that CD4(+) CD25(+) T cell may, at least in part, maintain tolerance to Reo-2-triggered and CpG ODN-induced prolonged mild Th1-dependent autoimmune insulitis, leading to the overt disease.
4855 16476010 Elimination of CD4+ CD25+ regulatory T cells breaks down reovirus type 2-triggered and CpG ODN-induced prolonged mild autoimmune insulitis in DBA/1 mice.
4856 16476010 Compared with the control mice, newborn mice treated with monoclonal antibody (MoAb) against mouse CD25(+) CD4(+) T cells together with Reo-2 and CpG ODN greatly reduced the absolute number of splenic CD25(+) T cells and resulted in the development of severe insulitis, leading to an overt early diabetes.
4857 16476010 Moreover, the treatment of the MoAb increased production of interferon-gamma (IFN-gamma) and decreased that of interleukin-4 (IL-4) and transforming growth factor-beta1 (TGF-beta1) and developed high titre of autoantibodies against pancreatic islet cells.
4858 16476010 These evidences suggest that CD4(+) CD25(+) T cell may, at least in part, maintain tolerance to Reo-2-triggered and CpG ODN-induced prolonged mild Th1-dependent autoimmune insulitis, leading to the overt disease.
4859 16478885 Foxp3+CD4+CD25+ T cells control virus-specific memory T cells in chimpanzees that recovered from hepatitis C.
4860 16478885 CD4(+)CD25(+) T cells have been implicated in HCV persistence because their frequency is increased in the blood of HCV-infected patients and their in vitro depletion results in increased IFN-gamma production by HCV-specific T cells.
4861 16478885 Studying a well-characterized cohort of 16 chimpanzees, the sole animal model for HCV infection, we here demonstrate that the frequency of Foxp3(+)CD4(+)CD25(+) regulatory T cells (T(Regs)) and the extent of suppression was as high in spontaneously HCV-recovered chimpanzees as in persistently HCV-infected chimpanzees.
4862 16478885 Foxp3(+)CD4(+)CD25(+) T(Regs) suppressed IFN-gamma production, expansion, and activation-induced cell death of HCV-specific T cells after recovery from HCV infection and in persistent HCV infection.
4863 16478885 However, Foxp3(+)CD4(+)CD25(+) T(Reg) cells of both HCV-recovered and HCV-infected chimpanzees differed from Foxp3(+)CD4(+)CD25(+)T(Reg) cells of HCV-naive chimpanzees in increased IL-2 responsiveness and lower T-cell receptor excision circle content, implying a history of in vivo proliferation.
4864 16478885 This result suggests that HCV infection alters the population of Foxp3(+)CD4(+)CD25(+) T(Reg) cells.
4865 16478885 Foxp3+CD4+CD25+ T cells control virus-specific memory T cells in chimpanzees that recovered from hepatitis C.
4866 16478885 CD4(+)CD25(+) T cells have been implicated in HCV persistence because their frequency is increased in the blood of HCV-infected patients and their in vitro depletion results in increased IFN-gamma production by HCV-specific T cells.
4867 16478885 Studying a well-characterized cohort of 16 chimpanzees, the sole animal model for HCV infection, we here demonstrate that the frequency of Foxp3(+)CD4(+)CD25(+) regulatory T cells (T(Regs)) and the extent of suppression was as high in spontaneously HCV-recovered chimpanzees as in persistently HCV-infected chimpanzees.
4868 16478885 Foxp3(+)CD4(+)CD25(+) T(Regs) suppressed IFN-gamma production, expansion, and activation-induced cell death of HCV-specific T cells after recovery from HCV infection and in persistent HCV infection.
4869 16478885 However, Foxp3(+)CD4(+)CD25(+) T(Reg) cells of both HCV-recovered and HCV-infected chimpanzees differed from Foxp3(+)CD4(+)CD25(+)T(Reg) cells of HCV-naive chimpanzees in increased IL-2 responsiveness and lower T-cell receptor excision circle content, implying a history of in vivo proliferation.
4870 16478885 This result suggests that HCV infection alters the population of Foxp3(+)CD4(+)CD25(+) T(Reg) cells.
4871 16478885 Foxp3+CD4+CD25+ T cells control virus-specific memory T cells in chimpanzees that recovered from hepatitis C.
4872 16478885 CD4(+)CD25(+) T cells have been implicated in HCV persistence because their frequency is increased in the blood of HCV-infected patients and their in vitro depletion results in increased IFN-gamma production by HCV-specific T cells.
4873 16478885 Studying a well-characterized cohort of 16 chimpanzees, the sole animal model for HCV infection, we here demonstrate that the frequency of Foxp3(+)CD4(+)CD25(+) regulatory T cells (T(Regs)) and the extent of suppression was as high in spontaneously HCV-recovered chimpanzees as in persistently HCV-infected chimpanzees.
4874 16478885 Foxp3(+)CD4(+)CD25(+) T(Regs) suppressed IFN-gamma production, expansion, and activation-induced cell death of HCV-specific T cells after recovery from HCV infection and in persistent HCV infection.
4875 16478885 However, Foxp3(+)CD4(+)CD25(+) T(Reg) cells of both HCV-recovered and HCV-infected chimpanzees differed from Foxp3(+)CD4(+)CD25(+)T(Reg) cells of HCV-naive chimpanzees in increased IL-2 responsiveness and lower T-cell receptor excision circle content, implying a history of in vivo proliferation.
4876 16478885 This result suggests that HCV infection alters the population of Foxp3(+)CD4(+)CD25(+) T(Reg) cells.
4877 16478885 Foxp3+CD4+CD25+ T cells control virus-specific memory T cells in chimpanzees that recovered from hepatitis C.
4878 16478885 CD4(+)CD25(+) T cells have been implicated in HCV persistence because their frequency is increased in the blood of HCV-infected patients and their in vitro depletion results in increased IFN-gamma production by HCV-specific T cells.
4879 16478885 Studying a well-characterized cohort of 16 chimpanzees, the sole animal model for HCV infection, we here demonstrate that the frequency of Foxp3(+)CD4(+)CD25(+) regulatory T cells (T(Regs)) and the extent of suppression was as high in spontaneously HCV-recovered chimpanzees as in persistently HCV-infected chimpanzees.
4880 16478885 Foxp3(+)CD4(+)CD25(+) T(Regs) suppressed IFN-gamma production, expansion, and activation-induced cell death of HCV-specific T cells after recovery from HCV infection and in persistent HCV infection.
4881 16478885 However, Foxp3(+)CD4(+)CD25(+) T(Reg) cells of both HCV-recovered and HCV-infected chimpanzees differed from Foxp3(+)CD4(+)CD25(+)T(Reg) cells of HCV-naive chimpanzees in increased IL-2 responsiveness and lower T-cell receptor excision circle content, implying a history of in vivo proliferation.
4882 16478885 This result suggests that HCV infection alters the population of Foxp3(+)CD4(+)CD25(+) T(Reg) cells.
4883 16478885 Foxp3+CD4+CD25+ T cells control virus-specific memory T cells in chimpanzees that recovered from hepatitis C.
4884 16478885 CD4(+)CD25(+) T cells have been implicated in HCV persistence because their frequency is increased in the blood of HCV-infected patients and their in vitro depletion results in increased IFN-gamma production by HCV-specific T cells.
4885 16478885 Studying a well-characterized cohort of 16 chimpanzees, the sole animal model for HCV infection, we here demonstrate that the frequency of Foxp3(+)CD4(+)CD25(+) regulatory T cells (T(Regs)) and the extent of suppression was as high in spontaneously HCV-recovered chimpanzees as in persistently HCV-infected chimpanzees.
4886 16478885 Foxp3(+)CD4(+)CD25(+) T(Regs) suppressed IFN-gamma production, expansion, and activation-induced cell death of HCV-specific T cells after recovery from HCV infection and in persistent HCV infection.
4887 16478885 However, Foxp3(+)CD4(+)CD25(+) T(Reg) cells of both HCV-recovered and HCV-infected chimpanzees differed from Foxp3(+)CD4(+)CD25(+)T(Reg) cells of HCV-naive chimpanzees in increased IL-2 responsiveness and lower T-cell receptor excision circle content, implying a history of in vivo proliferation.
4888 16478885 This result suggests that HCV infection alters the population of Foxp3(+)CD4(+)CD25(+) T(Reg) cells.
4889 16478885 Foxp3+CD4+CD25+ T cells control virus-specific memory T cells in chimpanzees that recovered from hepatitis C.
4890 16478885 CD4(+)CD25(+) T cells have been implicated in HCV persistence because their frequency is increased in the blood of HCV-infected patients and their in vitro depletion results in increased IFN-gamma production by HCV-specific T cells.
4891 16478885 Studying a well-characterized cohort of 16 chimpanzees, the sole animal model for HCV infection, we here demonstrate that the frequency of Foxp3(+)CD4(+)CD25(+) regulatory T cells (T(Regs)) and the extent of suppression was as high in spontaneously HCV-recovered chimpanzees as in persistently HCV-infected chimpanzees.
4892 16478885 Foxp3(+)CD4(+)CD25(+) T(Regs) suppressed IFN-gamma production, expansion, and activation-induced cell death of HCV-specific T cells after recovery from HCV infection and in persistent HCV infection.
4893 16478885 However, Foxp3(+)CD4(+)CD25(+) T(Reg) cells of both HCV-recovered and HCV-infected chimpanzees differed from Foxp3(+)CD4(+)CD25(+)T(Reg) cells of HCV-naive chimpanzees in increased IL-2 responsiveness and lower T-cell receptor excision circle content, implying a history of in vivo proliferation.
4894 16478885 This result suggests that HCV infection alters the population of Foxp3(+)CD4(+)CD25(+) T(Reg) cells.
4895 16493034 Islet-specific glucose-6-phosphatase catalytic subunit-related protein-reactive CD4+ T cells in human subjects.
4896 16493034 Islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP) is recognized as a major autoantigen for autoimmune type 1 diabetes (T1D) in the NOD mouse model.
4897 16493034 This study was undertaken to examine CD4+ T cell responses toward IGRP in human subjects.
4898 16493034 The tetramer-guided epitope mapping approach was used to identify IGRP-specific CD4+ T cell epitopes.
4899 16493034 More than 80% of subjects with either DRB1*0401 or DRB1*0301 haplotype have IGRP-specific CD4+ T cell responses for at least one IGRP epitope.
4900 16493034 IGRP-specific T cells from both healthy and T1D groups produce both gamma-IFN and IL-10.
4901 16493034 DRA1*0101/DRB1*0401 IGRP(247-259)-restricted T cells also show cross-reactivity to an epitope derived from liver/kidney glucose-6-phosphatase.
4902 16493034 Islet-specific glucose-6-phosphatase catalytic subunit-related protein-reactive CD4+ T cells in human subjects.
4903 16493034 Islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP) is recognized as a major autoantigen for autoimmune type 1 diabetes (T1D) in the NOD mouse model.
4904 16493034 This study was undertaken to examine CD4+ T cell responses toward IGRP in human subjects.
4905 16493034 The tetramer-guided epitope mapping approach was used to identify IGRP-specific CD4+ T cell epitopes.
4906 16493034 More than 80% of subjects with either DRB1*0401 or DRB1*0301 haplotype have IGRP-specific CD4+ T cell responses for at least one IGRP epitope.
4907 16493034 IGRP-specific T cells from both healthy and T1D groups produce both gamma-IFN and IL-10.
4908 16493034 DRA1*0101/DRB1*0401 IGRP(247-259)-restricted T cells also show cross-reactivity to an epitope derived from liver/kidney glucose-6-phosphatase.
4909 16493034 Islet-specific glucose-6-phosphatase catalytic subunit-related protein-reactive CD4+ T cells in human subjects.
4910 16493034 Islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP) is recognized as a major autoantigen for autoimmune type 1 diabetes (T1D) in the NOD mouse model.
4911 16493034 This study was undertaken to examine CD4+ T cell responses toward IGRP in human subjects.
4912 16493034 The tetramer-guided epitope mapping approach was used to identify IGRP-specific CD4+ T cell epitopes.
4913 16493034 More than 80% of subjects with either DRB1*0401 or DRB1*0301 haplotype have IGRP-specific CD4+ T cell responses for at least one IGRP epitope.
4914 16493034 IGRP-specific T cells from both healthy and T1D groups produce both gamma-IFN and IL-10.
4915 16493034 DRA1*0101/DRB1*0401 IGRP(247-259)-restricted T cells also show cross-reactivity to an epitope derived from liver/kidney glucose-6-phosphatase.
4916 16493034 Islet-specific glucose-6-phosphatase catalytic subunit-related protein-reactive CD4+ T cells in human subjects.
4917 16493034 Islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP) is recognized as a major autoantigen for autoimmune type 1 diabetes (T1D) in the NOD mouse model.
4918 16493034 This study was undertaken to examine CD4+ T cell responses toward IGRP in human subjects.
4919 16493034 The tetramer-guided epitope mapping approach was used to identify IGRP-specific CD4+ T cell epitopes.
4920 16493034 More than 80% of subjects with either DRB1*0401 or DRB1*0301 haplotype have IGRP-specific CD4+ T cell responses for at least one IGRP epitope.
4921 16493034 IGRP-specific T cells from both healthy and T1D groups produce both gamma-IFN and IL-10.
4922 16493034 DRA1*0101/DRB1*0401 IGRP(247-259)-restricted T cells also show cross-reactivity to an epitope derived from liver/kidney glucose-6-phosphatase.
4923 16493087 In both humans and NOD mice, particular MHC genes are primary contributors to development of the autoreactive CD4+ and CD8+ T cell responses against pancreatic beta cells that cause type 1 diabetes (T1D).
4924 16493087 In this study, we show that transgenic expression in NOD mice of HLA-A*0201, in the absence of murine class I MHC molecules, is sufficient to mediate autoreactive CD8+ T cell responses contributing to T1D development.
4925 16493087 CD8+ T cells from the transgenic mice are cytotoxic to murine and human HLA-A*0201-positive islet cells.
4926 16493087 Islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP) is one of several important T1D autoantigens in standard NOD mice.
4927 16493087 Three IGRP-derived peptides were identified as targets of diabetogenic HLA-A*0201-restricted T cells in our NOD transgenic stock.
4928 16506667 On the immunohistochemical examination, infiltration of CD4- and CD8-positive T lymphocytes was detected in the lacrimal gland, the submandibular gland, the gall bladder and the pancreas.
4929 16525991 Therapeutic potential of self-antigen-specific CD4+ CD25+ regulatory T cells selected in vitro from a polyclonal repertoire.
4930 16525991 CD4+ CD25+ regulatory T cells (Treg) play a major role in the prevention of autoimmune diseases.
4931 16525991 Therapeutic potential of self-antigen-specific CD4+ CD25+ regulatory T cells selected in vitro from a polyclonal repertoire.
4932 16525991 CD4+ CD25+ regulatory T cells (Treg) play a major role in the prevention of autoimmune diseases.
4933 16542367 In contrast, the CD4+CD25(high)CCR4+ T cell population increased during the same period (mean change 11.5%, P = 0.0036).
4934 16542367 A negative correlation was found between the decline in IgA-tTG and CD4+CD25high T cells expressing CD45RO (r = -0.49, P = 0.03) and CCR4 (r = -0.54, P = 0.01).
4935 16542367 In contrast, the CD4+CD25(high)CCR4+ T cell population increased during the same period (mean change 11.5%, P = 0.0036).
4936 16542367 A negative correlation was found between the decline in IgA-tTG and CD4+CD25high T cells expressing CD45RO (r = -0.49, P = 0.03) and CCR4 (r = -0.54, P = 0.01).
4937 16567523 CD4+ CD25+ regulatory T-cells inhibit the islet innate immune response and promote islet engraftment.
4938 16567523 CD4+ CD25+ regulatory T-cells inhibit islet chemokine expression through a cell contact-dependent, soluble factor-independent mechanism and inhibit effector T-cell migration to the islet.
4939 16567523 CD4+ CD25+ regulatory T-cells inhibit the islet innate immune response and promote islet engraftment.
4940 16567523 CD4+ CD25+ regulatory T-cells inhibit islet chemokine expression through a cell contact-dependent, soluble factor-independent mechanism and inhibit effector T-cell migration to the islet.
4941 16572390 CD4+ CD25+ Foxp3+ regulatory T cells (Treg) are natural suppressors of autoimmunity but they can also dampen the effective clearance of infectious organisms.
4942 16580840 It has long been established that type 1 diabetes (T1D) is a T cell-mediated autoimmune disease, with CD4+ and CD8+ T cells being largely responsible for the destruction of beta cells within the pancreatic islets of Langerhans.
4943 16585551 Intranasal vaccination with proinsulin DNA induces regulatory CD4+ T cells that prevent experimental autoimmune diabetes.
4944 16585551 We found that intranasal vaccination of NOD mice with plasmid DNA encoding mouse proinsulin II-induced CD4+ T(reg) that suppressed diabetes development, both after adoptive cotransfer with "diabetogenic" spleen cells and after transfer into NOD mice given cyclophosphamide to accelerate diabetes onset.
4945 16585551 In contrast to prototypic CD4+ CD25+ T(reg), CD4+ T(reg) induced by proinsulin DNA were both CD25+ and CD25- and not defined by markers such as glucocorticoid-induced TNFR-related protein (GITR), CD103, or Foxp3.
4946 16585551 However, diabetes was prevented when DNA vaccination was performed under the cover of CD40 ligand blockade, known to prevent priming of CTL by mucosal Ag.
4947 16585551 Intranasal vaccination with proinsulin DNA induces regulatory CD4+ T cells that prevent experimental autoimmune diabetes.
4948 16585551 We found that intranasal vaccination of NOD mice with plasmid DNA encoding mouse proinsulin II-induced CD4+ T(reg) that suppressed diabetes development, both after adoptive cotransfer with "diabetogenic" spleen cells and after transfer into NOD mice given cyclophosphamide to accelerate diabetes onset.
4949 16585551 In contrast to prototypic CD4+ CD25+ T(reg), CD4+ T(reg) induced by proinsulin DNA were both CD25+ and CD25- and not defined by markers such as glucocorticoid-induced TNFR-related protein (GITR), CD103, or Foxp3.
4950 16585551 However, diabetes was prevented when DNA vaccination was performed under the cover of CD40 ligand blockade, known to prevent priming of CTL by mucosal Ag.
4951 16585551 Intranasal vaccination with proinsulin DNA induces regulatory CD4+ T cells that prevent experimental autoimmune diabetes.
4952 16585551 We found that intranasal vaccination of NOD mice with plasmid DNA encoding mouse proinsulin II-induced CD4+ T(reg) that suppressed diabetes development, both after adoptive cotransfer with "diabetogenic" spleen cells and after transfer into NOD mice given cyclophosphamide to accelerate diabetes onset.
4953 16585551 In contrast to prototypic CD4+ CD25+ T(reg), CD4+ T(reg) induced by proinsulin DNA were both CD25+ and CD25- and not defined by markers such as glucocorticoid-induced TNFR-related protein (GITR), CD103, or Foxp3.
4954 16585551 However, diabetes was prevented when DNA vaccination was performed under the cover of CD40 ligand blockade, known to prevent priming of CTL by mucosal Ag.
4955 16585549 Targeted disruption of CD38 accelerates autoimmune diabetes in NOD/Lt mice by enhancing autoimmunity in an ADP-ribosyltransferase 2-dependent fashion.
4956 16585549 Ubiquitously expressed CD38 and T cell-expressed ADP-ribosyltransferase 2 (ART2) are ectoenzymes competing for NAD substrate.
4957 16585549 ART2 is an ADP-ribosyltransferase on naive CD4+ and CD8+ T cells.
4958 16585549 Transfer of a genetically disrupted CD38 allele into the autoimmune diabetes-prone NOD/Lt background accelerated diabetes onset in both sexes, whereas transfer of a disrupted ART2 complex had no effect.
4959 16585549 However, the fact that the accelerated pathogenesis mediated by CD38 deficiency required ART2 activity was demonstrated by combining both ART2 and CD38 deficiencies.
4960 16585549 Rather, the balance between T-effectors and T-regulatory cells was disturbed in CD38-deficient but ART2-intact NOD mice.
4961 16585549 These changes were corrected when CD38 deficiency was combined with ART2 deficiency.
4962 16585549 Both ART2-deficient and CD38/ART2 combined deficient T cells were resistant to NAD-induced killing in vitro, whereas CD38-deficient but ART2-intact T cells showed increased sensitivity, particularly the CD4+ CD25+ subset.
4963 16585549 Unexpectedly, diabetes development in the combined CD38/ART2 stock was strongly suppressed, possibly through epistatic interactions between genes linked to the targeted CD38 on Chromosome 5 and the ART2 complex on Chromosome 7.
4964 16585549 Targeted disruption of CD38 accelerates autoimmune diabetes in NOD/Lt mice by enhancing autoimmunity in an ADP-ribosyltransferase 2-dependent fashion.
4965 16585549 Ubiquitously expressed CD38 and T cell-expressed ADP-ribosyltransferase 2 (ART2) are ectoenzymes competing for NAD substrate.
4966 16585549 ART2 is an ADP-ribosyltransferase on naive CD4+ and CD8+ T cells.
4967 16585549 Transfer of a genetically disrupted CD38 allele into the autoimmune diabetes-prone NOD/Lt background accelerated diabetes onset in both sexes, whereas transfer of a disrupted ART2 complex had no effect.
4968 16585549 However, the fact that the accelerated pathogenesis mediated by CD38 deficiency required ART2 activity was demonstrated by combining both ART2 and CD38 deficiencies.
4969 16585549 Rather, the balance between T-effectors and T-regulatory cells was disturbed in CD38-deficient but ART2-intact NOD mice.
4970 16585549 These changes were corrected when CD38 deficiency was combined with ART2 deficiency.
4971 16585549 Both ART2-deficient and CD38/ART2 combined deficient T cells were resistant to NAD-induced killing in vitro, whereas CD38-deficient but ART2-intact T cells showed increased sensitivity, particularly the CD4+ CD25+ subset.
4972 16585549 Unexpectedly, diabetes development in the combined CD38/ART2 stock was strongly suppressed, possibly through epistatic interactions between genes linked to the targeted CD38 on Chromosome 5 and the ART2 complex on Chromosome 7.
4973 16585568 Control of autoimmune myocarditis and multiorgan inflammation by glucocorticoid-induced TNF receptor family-related protein(high), Foxp3-expressing CD25+ and CD25- regulatory T cells.
4974 16585568 The transcription factor Foxp3 is currently the most specific marker for natural CD4+ Treg, but it would be useful if other Treg markers, particularly cell surface molecules, could be elucidated.
4975 16585568 We demonstrate in this study that the vast majority of Foxp3-expressing CD4+ T cells (whether CD25+ or CD25-) show constitutive high-level expression of glucocorticoid-induced TNFR family-related gene/protein (GITR).
4976 16585568 Transfer of T cell or thymocyte suspensions depleted of GITR(high) cells produces in BALB/c nude mice a wider spectrum and more severe forms of autoimmune diseases than does transfer of similar cell suspensions depleted of CD25+ CD4+ T cells only.
4977 16585568 Control of autoimmune myocarditis and multiorgan inflammation by glucocorticoid-induced TNF receptor family-related protein(high), Foxp3-expressing CD25+ and CD25- regulatory T cells.
4978 16585568 The transcription factor Foxp3 is currently the most specific marker for natural CD4+ Treg, but it would be useful if other Treg markers, particularly cell surface molecules, could be elucidated.
4979 16585568 We demonstrate in this study that the vast majority of Foxp3-expressing CD4+ T cells (whether CD25+ or CD25-) show constitutive high-level expression of glucocorticoid-induced TNFR family-related gene/protein (GITR).
4980 16585568 Transfer of T cell or thymocyte suspensions depleted of GITR(high) cells produces in BALB/c nude mice a wider spectrum and more severe forms of autoimmune diseases than does transfer of similar cell suspensions depleted of CD25+ CD4+ T cells only.
4981 16585568 Control of autoimmune myocarditis and multiorgan inflammation by glucocorticoid-induced TNF receptor family-related protein(high), Foxp3-expressing CD25+ and CD25- regulatory T cells.
4982 16585568 The transcription factor Foxp3 is currently the most specific marker for natural CD4+ Treg, but it would be useful if other Treg markers, particularly cell surface molecules, could be elucidated.
4983 16585568 We demonstrate in this study that the vast majority of Foxp3-expressing CD4+ T cells (whether CD25+ or CD25-) show constitutive high-level expression of glucocorticoid-induced TNFR family-related gene/protein (GITR).
4984 16585568 Transfer of T cell or thymocyte suspensions depleted of GITR(high) cells produces in BALB/c nude mice a wider spectrum and more severe forms of autoimmune diseases than does transfer of similar cell suspensions depleted of CD25+ CD4+ T cells only.
4985 16606670 PD-1 has two ligands: PD-1 ligand 1 (PD-L1), which is expressed broadly on hematopoietic and parenchymal cells, including pancreatic islet cells; and PD-L2, which is restricted to macrophages and dendritic cells.
4986 16606670 To investigate whether PD-L1 and PD-L2 have synergistic or unique roles in regulating T cell activation and tolerance, we generated mice lacking PD-L1 and PD-L2 (PD-L1/PD-L2(-/-) mice) and compared them to mice lacking either PD-L.
4987 16606670 PD-L1 and PD-L2 have overlapping functions in inhibiting interleukin-2 and interferon-gamma production during T cell activation.
4988 16606670 Our studies with bone marrow chimeras demonstrate that PD-L1/PD-L2 expression only on antigen-presenting cells is insufficient to prevent the early onset diabetes that develops in PD-L1/PD-L2(-/-) non-obese diabetic mice.
4989 16606670 PD-L1 inhibits pathogenic self-reactive CD4+ T cell-mediated tissue destruction and effector cytokine production.
4990 16613348 IELs expressed CD3, CD4 (42%), CD8 (36%), and granzyme B (0.2%), whereas T-cell intracytoplasmic antigen (TIA) 1 was not expressed.
4991 16619338 MG administration effectively regulated the immune imbalance in diabetic mice, principally by upregulating the CD4(+) T lymphocyte subsets, and remodeling the intracellular cytokine profiles (reducing the expression of pro-inflammatory Th1 cytokines towards a beneficial Th2 pattern), ascribed to its induction and upregulation of HO-1.
4992 16621191 We have shown previously that incorporation of a cDNA coding for the pro-apoptotic protein BAX into plasmid DNA coding for a secreted form of the pancreatic beta-cell antigen glutamic acid decarboxylase (GAD) promotes prevention of type 1 diabetes in non-obese diabetic (NOD) mice.
4993 16621191 In addition, immunological analysis revealed that the DNA vaccine induced CD4(+)CD25(+) T cells cultured from draining lymph nodes that had immunosuppressive function in vitro.
4994 16621191 Data also revealed that CD4(+)CD25(-) T cells from mice immunized with the DNA vaccine yielded a cell population that was foxp3(+), showed increased expression of CD25 compared to control, and had immunosuppressive function in vitro, indicating that Tregs could have developed from antigen-induced, peripheral T lymphocytes.
4995 16621191 We have shown previously that incorporation of a cDNA coding for the pro-apoptotic protein BAX into plasmid DNA coding for a secreted form of the pancreatic beta-cell antigen glutamic acid decarboxylase (GAD) promotes prevention of type 1 diabetes in non-obese diabetic (NOD) mice.
4996 16621191 In addition, immunological analysis revealed that the DNA vaccine induced CD4(+)CD25(+) T cells cultured from draining lymph nodes that had immunosuppressive function in vitro.
4997 16621191 Data also revealed that CD4(+)CD25(-) T cells from mice immunized with the DNA vaccine yielded a cell population that was foxp3(+), showed increased expression of CD25 compared to control, and had immunosuppressive function in vitro, indicating that Tregs could have developed from antigen-induced, peripheral T lymphocytes.
4998 16675487 We have established a novel CD4 and CD8 double-positive CD25+ T regulatory (Treg) clone, MT-5B, from lymph nodes of type 1 diabetes prone non-obese diabetic (NOD) mice immunized with CFA.
4999 16700888 CD4+CD25+ regulatory T cells in health and disease.
5000 16700888 Various populations of Treg cells have been described, including thymically derived CD4(+)CD25(+) Treg cells.
5001 16700888 In addition, a second subset of Treg cells, type 1 T regulatoary (Tr1) and Th3 cells, exert their suppressive capacity via cytokines such as interleukin-10 and transforming growth factor-beta and are contact independent. 4.
5002 16700888 The present review summarizes the characteristics and molecular basis of CD4(+)CD25(+) Treg cells, as well as their therapeutic potential in modulating inflammatory diseases, such as inflammatory bowel disease and rheumatoid arthritis.
5003 16700888 CD4+CD25+ regulatory T cells in health and disease.
5004 16700888 Various populations of Treg cells have been described, including thymically derived CD4(+)CD25(+) Treg cells.
5005 16700888 In addition, a second subset of Treg cells, type 1 T regulatoary (Tr1) and Th3 cells, exert their suppressive capacity via cytokines such as interleukin-10 and transforming growth factor-beta and are contact independent. 4.
5006 16700888 The present review summarizes the characteristics and molecular basis of CD4(+)CD25(+) Treg cells, as well as their therapeutic potential in modulating inflammatory diseases, such as inflammatory bowel disease and rheumatoid arthritis.
5007 16700888 CD4+CD25+ regulatory T cells in health and disease.
5008 16700888 Various populations of Treg cells have been described, including thymically derived CD4(+)CD25(+) Treg cells.
5009 16700888 In addition, a second subset of Treg cells, type 1 T regulatoary (Tr1) and Th3 cells, exert their suppressive capacity via cytokines such as interleukin-10 and transforming growth factor-beta and are contact independent. 4.
5010 16700888 The present review summarizes the characteristics and molecular basis of CD4(+)CD25(+) Treg cells, as well as their therapeutic potential in modulating inflammatory diseases, such as inflammatory bowel disease and rheumatoid arthritis.
5011 16709812 NTX had only a minor effect in NOD mice protected from diabetes by transgenic expression of the beta cell autoantigen proinsulin in APCs, inferring that accelerated diabetes after NTX is largely due to failure to regulate proinsulin-specific T cells.
5012 16709812 Transfer of prototypic CD4+CD25+ regulatory T cells also prevented diabetes in NTX-NOD mice; however, the induction of these cells by oral insulin in euthymic mice depended on the integrity of TCRgammadelta IEL.
5013 16713179 Autoimmune regulatory cells were CD4(+)CD25(+), but not CD4(+)CD25(-), T cells.
5014 16718939 Good's syndrome is the association of thymoma with immunodeficiency, characterized by hypogammaglobulinaemia, depleted B-cells, diminished T-cells and inversion of the CD4/CD8 ratio.
5015 16731818 Glucagon-like peptide 1 (GLP-1) exhibits considerable potential for the treatment of type 2 diabetes because of its effects on stimulation of insulin secretion and the inhibition of gastric emptying, appetite, and glucagon secretion.
5016 16731818 We now report that MT-Exendin mice develop extensive tissue lymphocytic infiltration with increased numbers of CD4(+) and CD8a(+) cells in the liver and/or kidney and increased numbers of B220(+) cells present in the pancreas and liver.
5017 16731819 Induction of tolerance in type 1 diabetes via both CD4+CD25+ T regulatory cells and T regulatory type 1 cells.
5018 16731819 Rapamycin mediates accumulation in the pancreas of suppressive CD4(+)CD25(+)FoxP3(+) Tr cells, which prevent diabetes.
5019 16731819 Induction of tolerance in type 1 diabetes via both CD4+CD25+ T regulatory cells and T regulatory type 1 cells.
5020 16731819 Rapamycin mediates accumulation in the pancreas of suppressive CD4(+)CD25(+)FoxP3(+) Tr cells, which prevent diabetes.
5021 16751371 IL-1 is a key proinflammatory driver of several autoimmune diseases including juvenile inflammatory arthritis, diseases with mutations in the NALP/cryopyrin complex and Crohn's disease, and is genetically or clinically associated with many others.
5022 16751371 Here we show that autoimmune-prone NOD and IL-1 receptor antagonist-deficient C57BL/6 mice both produce high levels of IL-1, which drives autoreactive effector cell expansion.
5023 16751371 IL-1beta drives proliferation and cytokine production by CD4(+)CD25(+)FoxP3(-) effector/memory T cells, attenuates CD4(+)CD25(+)FoxP3(+) regulatory T cell function, and allows escape of CD4(+)CD25(-) autoreactive effectors from suppression.
5024 16751422 We report in this study that leptin receptor (ObR) is expressed on resting normal mouse CD4(+), CD8(+), B cells, and monocyte/macrophages.
5025 16751422 Leptin binding to ObR results in increased STAT-3 activation in T cells, with a different activation pattern in resting vs anti-CD3 Ab stimulated T cells.
5026 16751422 B lymphocytes appear to be more susceptible to the antiapoptotic effects of leptin, and they show higher surface expression of ObR, compared with T cells.
5027 16751422 Moreover, CD4(+) T cells isolated from ObR-deficient mice displayed a reduced proliferative response, compared with normal controls.
5028 16751422 Furthermore, ObR/STAT-3-mediated signaling in T lymphocytes is decreased in the diet-induced obese mouse model of obesity and leptin resistance.
5029 16751422 In summary, our findings show that the ObR is expressed on normal mouse lymphocyte subsets, that leptin plays a role in lymphocyte survival, and that leptin alters the ObR/STAT-3-mediated signaling in T cells.
5030 16751422 We report in this study that leptin receptor (ObR) is expressed on resting normal mouse CD4(+), CD8(+), B cells, and monocyte/macrophages.
5031 16751422 Leptin binding to ObR results in increased STAT-3 activation in T cells, with a different activation pattern in resting vs anti-CD3 Ab stimulated T cells.
5032 16751422 B lymphocytes appear to be more susceptible to the antiapoptotic effects of leptin, and they show higher surface expression of ObR, compared with T cells.
5033 16751422 Moreover, CD4(+) T cells isolated from ObR-deficient mice displayed a reduced proliferative response, compared with normal controls.
5034 16751422 Furthermore, ObR/STAT-3-mediated signaling in T lymphocytes is decreased in the diet-induced obese mouse model of obesity and leptin resistance.
5035 16751422 In summary, our findings show that the ObR is expressed on normal mouse lymphocyte subsets, that leptin plays a role in lymphocyte survival, and that leptin alters the ObR/STAT-3-mediated signaling in T cells.
5036 16781893 Genetic studies demonstrated a 34.4 kb deletion at Xq28 which included AVPR2, the gene responsible for NDI; ARHGAP4, a hematopoietic specific gene encoding a GTPase-activating protein; and a highly conserved segment of DNA between ARHGAP4 and ARD1A, a gene involved in the response to hypoxia.
5037 16781893 Other patients with NDI, but without immunodeficiency, have had deletions that remove all ARHGAP4 except exon 1; however, no other patients have had deletions of the highly conserved intragenic region between ARHGAP4 and ARD1A.
5038 16781893 X chromosome inactivation studies, done on sorted cells from the mother and grandmother of the patient, carriers of the deletion, demonstrated exclusive use of the non-mutant X chromosome as the active X in CD4 and CD8 T cells.
5039 16784487 Characteristics of rat CD4(+)CD25(+) T cells and their ability to prevent not only diabetes but also insulitis in an adoptive transfer model in BB rats.
5040 16784487 Human and mouse CD4(+)CD25(+) T cells have been intensively studied through the last decade.
5041 16784487 This study describes the phenotype of rat CD4(+)CD25(+) Foxp3(+) T cells and the site in which they exert regulation in a transfer-induced autoimmune diabetes model.
5042 16784487 Several proteins and mRNAs are up-regulated in unstimulated rat CD4(+)CD25(+) T cells compared with CD4(+)CD25(-) T cells, including Foxp3, Lag-3, CD80, interleukin 10 (IL-10) and CTLA-4.
5043 16784487 To investigate CD4(+)CD25(+) T cells in vivo, we transferred three million diabetogenic T cells either alone or in combination with two million CD4(+)CD25(+) T cells to 30-day-old BB rats.
5044 16784487 By contrast, rats receiving both diabetogenic T cells and CD4(+)CD25(+) T cells had no insulitis at any time.
5045 16784487 Characteristics of rat CD4(+)CD25(+) T cells and their ability to prevent not only diabetes but also insulitis in an adoptive transfer model in BB rats.
5046 16784487 Human and mouse CD4(+)CD25(+) T cells have been intensively studied through the last decade.
5047 16784487 This study describes the phenotype of rat CD4(+)CD25(+) Foxp3(+) T cells and the site in which they exert regulation in a transfer-induced autoimmune diabetes model.
5048 16784487 Several proteins and mRNAs are up-regulated in unstimulated rat CD4(+)CD25(+) T cells compared with CD4(+)CD25(-) T cells, including Foxp3, Lag-3, CD80, interleukin 10 (IL-10) and CTLA-4.
5049 16784487 To investigate CD4(+)CD25(+) T cells in vivo, we transferred three million diabetogenic T cells either alone or in combination with two million CD4(+)CD25(+) T cells to 30-day-old BB rats.
5050 16784487 By contrast, rats receiving both diabetogenic T cells and CD4(+)CD25(+) T cells had no insulitis at any time.
5051 16784487 Characteristics of rat CD4(+)CD25(+) T cells and their ability to prevent not only diabetes but also insulitis in an adoptive transfer model in BB rats.
5052 16784487 Human and mouse CD4(+)CD25(+) T cells have been intensively studied through the last decade.
5053 16784487 This study describes the phenotype of rat CD4(+)CD25(+) Foxp3(+) T cells and the site in which they exert regulation in a transfer-induced autoimmune diabetes model.
5054 16784487 Several proteins and mRNAs are up-regulated in unstimulated rat CD4(+)CD25(+) T cells compared with CD4(+)CD25(-) T cells, including Foxp3, Lag-3, CD80, interleukin 10 (IL-10) and CTLA-4.
5055 16784487 To investigate CD4(+)CD25(+) T cells in vivo, we transferred three million diabetogenic T cells either alone or in combination with two million CD4(+)CD25(+) T cells to 30-day-old BB rats.
5056 16784487 By contrast, rats receiving both diabetogenic T cells and CD4(+)CD25(+) T cells had no insulitis at any time.
5057 16784487 Characteristics of rat CD4(+)CD25(+) T cells and their ability to prevent not only diabetes but also insulitis in an adoptive transfer model in BB rats.
5058 16784487 Human and mouse CD4(+)CD25(+) T cells have been intensively studied through the last decade.
5059 16784487 This study describes the phenotype of rat CD4(+)CD25(+) Foxp3(+) T cells and the site in which they exert regulation in a transfer-induced autoimmune diabetes model.
5060 16784487 Several proteins and mRNAs are up-regulated in unstimulated rat CD4(+)CD25(+) T cells compared with CD4(+)CD25(-) T cells, including Foxp3, Lag-3, CD80, interleukin 10 (IL-10) and CTLA-4.
5061 16784487 To investigate CD4(+)CD25(+) T cells in vivo, we transferred three million diabetogenic T cells either alone or in combination with two million CD4(+)CD25(+) T cells to 30-day-old BB rats.
5062 16784487 By contrast, rats receiving both diabetogenic T cells and CD4(+)CD25(+) T cells had no insulitis at any time.
5063 16784487 Characteristics of rat CD4(+)CD25(+) T cells and their ability to prevent not only diabetes but also insulitis in an adoptive transfer model in BB rats.
5064 16784487 Human and mouse CD4(+)CD25(+) T cells have been intensively studied through the last decade.
5065 16784487 This study describes the phenotype of rat CD4(+)CD25(+) Foxp3(+) T cells and the site in which they exert regulation in a transfer-induced autoimmune diabetes model.
5066 16784487 Several proteins and mRNAs are up-regulated in unstimulated rat CD4(+)CD25(+) T cells compared with CD4(+)CD25(-) T cells, including Foxp3, Lag-3, CD80, interleukin 10 (IL-10) and CTLA-4.
5067 16784487 To investigate CD4(+)CD25(+) T cells in vivo, we transferred three million diabetogenic T cells either alone or in combination with two million CD4(+)CD25(+) T cells to 30-day-old BB rats.
5068 16784487 By contrast, rats receiving both diabetogenic T cells and CD4(+)CD25(+) T cells had no insulitis at any time.
5069 16784487 Characteristics of rat CD4(+)CD25(+) T cells and their ability to prevent not only diabetes but also insulitis in an adoptive transfer model in BB rats.
5070 16784487 Human and mouse CD4(+)CD25(+) T cells have been intensively studied through the last decade.
5071 16784487 This study describes the phenotype of rat CD4(+)CD25(+) Foxp3(+) T cells and the site in which they exert regulation in a transfer-induced autoimmune diabetes model.
5072 16784487 Several proteins and mRNAs are up-regulated in unstimulated rat CD4(+)CD25(+) T cells compared with CD4(+)CD25(-) T cells, including Foxp3, Lag-3, CD80, interleukin 10 (IL-10) and CTLA-4.
5073 16784487 To investigate CD4(+)CD25(+) T cells in vivo, we transferred three million diabetogenic T cells either alone or in combination with two million CD4(+)CD25(+) T cells to 30-day-old BB rats.
5074 16784487 By contrast, rats receiving both diabetogenic T cells and CD4(+)CD25(+) T cells had no insulitis at any time.
5075 16785498 CD4+ T cell reactivity to proinsulin-2 was independent of proinsulin-2 expression in radiation-sensitive bone marrow-derived cells.
5076 16785498 Although chimeric animals had proinsulin-2-reactive CD4+ T cells in their peripheral repertoire, they displayed no insulitis or insulin Abs, suggesting additional protective mechanisms.
5077 16785498 In a model involving transfer to immunodeficient (CD3epsilon(-/-)) mice, naive and proinsulin-2-primed CD4+ T cells were not activated, but could be activated by immunization regardless of whether the recipient mice expressed proinsulin-2.
5078 16785498 Furthermore, we could not identify a role for putative specific T cells regulating proinsulin-2-reactive CD4+ T in transfer experiments.
5079 16785498 CD4+ T cell reactivity to proinsulin-2 was independent of proinsulin-2 expression in radiation-sensitive bone marrow-derived cells.
5080 16785498 Although chimeric animals had proinsulin-2-reactive CD4+ T cells in their peripheral repertoire, they displayed no insulitis or insulin Abs, suggesting additional protective mechanisms.
5081 16785498 In a model involving transfer to immunodeficient (CD3epsilon(-/-)) mice, naive and proinsulin-2-primed CD4+ T cells were not activated, but could be activated by immunization regardless of whether the recipient mice expressed proinsulin-2.
5082 16785498 Furthermore, we could not identify a role for putative specific T cells regulating proinsulin-2-reactive CD4+ T in transfer experiments.
5083 16785498 CD4+ T cell reactivity to proinsulin-2 was independent of proinsulin-2 expression in radiation-sensitive bone marrow-derived cells.
5084 16785498 Although chimeric animals had proinsulin-2-reactive CD4+ T cells in their peripheral repertoire, they displayed no insulitis or insulin Abs, suggesting additional protective mechanisms.
5085 16785498 In a model involving transfer to immunodeficient (CD3epsilon(-/-)) mice, naive and proinsulin-2-primed CD4+ T cells were not activated, but could be activated by immunization regardless of whether the recipient mice expressed proinsulin-2.
5086 16785498 Furthermore, we could not identify a role for putative specific T cells regulating proinsulin-2-reactive CD4+ T in transfer experiments.
5087 16785498 CD4+ T cell reactivity to proinsulin-2 was independent of proinsulin-2 expression in radiation-sensitive bone marrow-derived cells.
5088 16785498 Although chimeric animals had proinsulin-2-reactive CD4+ T cells in their peripheral repertoire, they displayed no insulitis or insulin Abs, suggesting additional protective mechanisms.
5089 16785498 In a model involving transfer to immunodeficient (CD3epsilon(-/-)) mice, naive and proinsulin-2-primed CD4+ T cells were not activated, but could be activated by immunization regardless of whether the recipient mice expressed proinsulin-2.
5090 16785498 Furthermore, we could not identify a role for putative specific T cells regulating proinsulin-2-reactive CD4+ T in transfer experiments.
5091 16792673 Lower percentages of CD4+ T cells (P = 0.03) and CD4+ CD25high cells (P = 0.06) expressing intracellular CTLA-4 were detected in samples from children with CTLA-4 +49GG compared to children with the +49AA genotype.
5092 16792673 Similarly, lower percentages of CD4+ (P = 0.002) and CD4+ CD25high (P = 0.002) cells expressing CTLA-4 were observed in children positive for HLA DQA1*0501-DQB1*0201 and DQA1*0301-DQB1*0302 (P = 0.04 for CD4+ and P = 0.02 for CD4+ CD25high) risk haplotypes when compared to children without these alleles.
5093 16792673 The percentage of CD25high cells among CD4+ cells was correlated inversely with CTLA-4 mRNA expression in PBMC (r = -0.56, P = 0.03).
5094 16792673 Decreased levels of CTLA-4 in CD4+ and CD4+ CD25high cells in individuals with CTLA-4 and HLA class II alleles associated with T1D may contribute to the initiation and/or progression of autoimmune response.
5095 16792673 Lower percentages of CD4+ T cells (P = 0.03) and CD4+ CD25high cells (P = 0.06) expressing intracellular CTLA-4 were detected in samples from children with CTLA-4 +49GG compared to children with the +49AA genotype.
5096 16792673 Similarly, lower percentages of CD4+ (P = 0.002) and CD4+ CD25high (P = 0.002) cells expressing CTLA-4 were observed in children positive for HLA DQA1*0501-DQB1*0201 and DQA1*0301-DQB1*0302 (P = 0.04 for CD4+ and P = 0.02 for CD4+ CD25high) risk haplotypes when compared to children without these alleles.
5097 16792673 The percentage of CD25high cells among CD4+ cells was correlated inversely with CTLA-4 mRNA expression in PBMC (r = -0.56, P = 0.03).
5098 16792673 Decreased levels of CTLA-4 in CD4+ and CD4+ CD25high cells in individuals with CTLA-4 and HLA class II alleles associated with T1D may contribute to the initiation and/or progression of autoimmune response.
5099 16792673 Lower percentages of CD4+ T cells (P = 0.03) and CD4+ CD25high cells (P = 0.06) expressing intracellular CTLA-4 were detected in samples from children with CTLA-4 +49GG compared to children with the +49AA genotype.
5100 16792673 Similarly, lower percentages of CD4+ (P = 0.002) and CD4+ CD25high (P = 0.002) cells expressing CTLA-4 were observed in children positive for HLA DQA1*0501-DQB1*0201 and DQA1*0301-DQB1*0302 (P = 0.04 for CD4+ and P = 0.02 for CD4+ CD25high) risk haplotypes when compared to children without these alleles.
5101 16792673 The percentage of CD25high cells among CD4+ cells was correlated inversely with CTLA-4 mRNA expression in PBMC (r = -0.56, P = 0.03).
5102 16792673 Decreased levels of CTLA-4 in CD4+ and CD4+ CD25high cells in individuals with CTLA-4 and HLA class II alleles associated with T1D may contribute to the initiation and/or progression of autoimmune response.
5103 16792673 Lower percentages of CD4+ T cells (P = 0.03) and CD4+ CD25high cells (P = 0.06) expressing intracellular CTLA-4 were detected in samples from children with CTLA-4 +49GG compared to children with the +49AA genotype.
5104 16792673 Similarly, lower percentages of CD4+ (P = 0.002) and CD4+ CD25high (P = 0.002) cells expressing CTLA-4 were observed in children positive for HLA DQA1*0501-DQB1*0201 and DQA1*0301-DQB1*0302 (P = 0.04 for CD4+ and P = 0.02 for CD4+ CD25high) risk haplotypes when compared to children without these alleles.
5105 16792673 The percentage of CD25high cells among CD4+ cells was correlated inversely with CTLA-4 mRNA expression in PBMC (r = -0.56, P = 0.03).
5106 16792673 Decreased levels of CTLA-4 in CD4+ and CD4+ CD25high cells in individuals with CTLA-4 and HLA class II alleles associated with T1D may contribute to the initiation and/or progression of autoimmune response.
5107 16804081 Deficiency in NOD antigen-presenting cell function may be responsible for suboptimal CD4+CD25+ T-cell-mediated regulation and type 1 diabetes development in NOD mice.
5108 16804081 CD4(+)CD25(+) regulatory cells play a crucial role in controlling various autoimmune diseases, and a deficiency in their number or function could be involved in disease development.
5109 16804081 The current study shows that NOD mice had fewer CD4(+)CD25(+) regulatory cells, which expressed normal levels of glucocorticoid-induced tumor necrosis factor receptor and cytotoxic T-lymphocyte-associated antigen-4.
5110 16804081 We have also found that NOD CD4(+)CD25(+) cells regulate poorly in vitro after stimulation with anti-CD3 and NOD APCs in comparison with B6 CD4(+)CD25(+) cells stimulated with B6 APCs.
5111 16804081 Surprisingly, stimulation of NOD CD4(+)CD25(+) cells with B6 APCs restored regulation, whereas with the reciprocal combination, NOD APCs failed to activate B6 CD4(+)CD25(+) cells properly.
5112 16804081 Interestingly, APCs from disease-free (>30 weeks of age), but not diabetic, NOD mice were able to activate CD4(+)CD25(+) regulatory function in vitro and apparently in vivo because only spleens of disease-free NOD mice contained potent CD4(+)CD25(+) regulatory cells that prevented disease development when transferred into young NOD recipients.
5113 16804081 These data suggest that the failure of NOD APCs to activate CD4(+)CD25(+) regulatory cells may play an important role in controlling type 1 diabetes development in NOD mice.
5114 16804081 Deficiency in NOD antigen-presenting cell function may be responsible for suboptimal CD4+CD25+ T-cell-mediated regulation and type 1 diabetes development in NOD mice.
5115 16804081 CD4(+)CD25(+) regulatory cells play a crucial role in controlling various autoimmune diseases, and a deficiency in their number or function could be involved in disease development.
5116 16804081 The current study shows that NOD mice had fewer CD4(+)CD25(+) regulatory cells, which expressed normal levels of glucocorticoid-induced tumor necrosis factor receptor and cytotoxic T-lymphocyte-associated antigen-4.
5117 16804081 We have also found that NOD CD4(+)CD25(+) cells regulate poorly in vitro after stimulation with anti-CD3 and NOD APCs in comparison with B6 CD4(+)CD25(+) cells stimulated with B6 APCs.
5118 16804081 Surprisingly, stimulation of NOD CD4(+)CD25(+) cells with B6 APCs restored regulation, whereas with the reciprocal combination, NOD APCs failed to activate B6 CD4(+)CD25(+) cells properly.
5119 16804081 Interestingly, APCs from disease-free (>30 weeks of age), but not diabetic, NOD mice were able to activate CD4(+)CD25(+) regulatory function in vitro and apparently in vivo because only spleens of disease-free NOD mice contained potent CD4(+)CD25(+) regulatory cells that prevented disease development when transferred into young NOD recipients.
5120 16804081 These data suggest that the failure of NOD APCs to activate CD4(+)CD25(+) regulatory cells may play an important role in controlling type 1 diabetes development in NOD mice.
5121 16804081 Deficiency in NOD antigen-presenting cell function may be responsible for suboptimal CD4+CD25+ T-cell-mediated regulation and type 1 diabetes development in NOD mice.
5122 16804081 CD4(+)CD25(+) regulatory cells play a crucial role in controlling various autoimmune diseases, and a deficiency in their number or function could be involved in disease development.
5123 16804081 The current study shows that NOD mice had fewer CD4(+)CD25(+) regulatory cells, which expressed normal levels of glucocorticoid-induced tumor necrosis factor receptor and cytotoxic T-lymphocyte-associated antigen-4.
5124 16804081 We have also found that NOD CD4(+)CD25(+) cells regulate poorly in vitro after stimulation with anti-CD3 and NOD APCs in comparison with B6 CD4(+)CD25(+) cells stimulated with B6 APCs.
5125 16804081 Surprisingly, stimulation of NOD CD4(+)CD25(+) cells with B6 APCs restored regulation, whereas with the reciprocal combination, NOD APCs failed to activate B6 CD4(+)CD25(+) cells properly.
5126 16804081 Interestingly, APCs from disease-free (>30 weeks of age), but not diabetic, NOD mice were able to activate CD4(+)CD25(+) regulatory function in vitro and apparently in vivo because only spleens of disease-free NOD mice contained potent CD4(+)CD25(+) regulatory cells that prevented disease development when transferred into young NOD recipients.
5127 16804081 These data suggest that the failure of NOD APCs to activate CD4(+)CD25(+) regulatory cells may play an important role in controlling type 1 diabetes development in NOD mice.
5128 16804081 Deficiency in NOD antigen-presenting cell function may be responsible for suboptimal CD4+CD25+ T-cell-mediated regulation and type 1 diabetes development in NOD mice.
5129 16804081 CD4(+)CD25(+) regulatory cells play a crucial role in controlling various autoimmune diseases, and a deficiency in their number or function could be involved in disease development.
5130 16804081 The current study shows that NOD mice had fewer CD4(+)CD25(+) regulatory cells, which expressed normal levels of glucocorticoid-induced tumor necrosis factor receptor and cytotoxic T-lymphocyte-associated antigen-4.
5131 16804081 We have also found that NOD CD4(+)CD25(+) cells regulate poorly in vitro after stimulation with anti-CD3 and NOD APCs in comparison with B6 CD4(+)CD25(+) cells stimulated with B6 APCs.
5132 16804081 Surprisingly, stimulation of NOD CD4(+)CD25(+) cells with B6 APCs restored regulation, whereas with the reciprocal combination, NOD APCs failed to activate B6 CD4(+)CD25(+) cells properly.
5133 16804081 Interestingly, APCs from disease-free (>30 weeks of age), but not diabetic, NOD mice were able to activate CD4(+)CD25(+) regulatory function in vitro and apparently in vivo because only spleens of disease-free NOD mice contained potent CD4(+)CD25(+) regulatory cells that prevented disease development when transferred into young NOD recipients.
5134 16804081 These data suggest that the failure of NOD APCs to activate CD4(+)CD25(+) regulatory cells may play an important role in controlling type 1 diabetes development in NOD mice.
5135 16804081 Deficiency in NOD antigen-presenting cell function may be responsible for suboptimal CD4+CD25+ T-cell-mediated regulation and type 1 diabetes development in NOD mice.
5136 16804081 CD4(+)CD25(+) regulatory cells play a crucial role in controlling various autoimmune diseases, and a deficiency in their number or function could be involved in disease development.
5137 16804081 The current study shows that NOD mice had fewer CD4(+)CD25(+) regulatory cells, which expressed normal levels of glucocorticoid-induced tumor necrosis factor receptor and cytotoxic T-lymphocyte-associated antigen-4.
5138 16804081 We have also found that NOD CD4(+)CD25(+) cells regulate poorly in vitro after stimulation with anti-CD3 and NOD APCs in comparison with B6 CD4(+)CD25(+) cells stimulated with B6 APCs.
5139 16804081 Surprisingly, stimulation of NOD CD4(+)CD25(+) cells with B6 APCs restored regulation, whereas with the reciprocal combination, NOD APCs failed to activate B6 CD4(+)CD25(+) cells properly.
5140 16804081 Interestingly, APCs from disease-free (>30 weeks of age), but not diabetic, NOD mice were able to activate CD4(+)CD25(+) regulatory function in vitro and apparently in vivo because only spleens of disease-free NOD mice contained potent CD4(+)CD25(+) regulatory cells that prevented disease development when transferred into young NOD recipients.
5141 16804081 These data suggest that the failure of NOD APCs to activate CD4(+)CD25(+) regulatory cells may play an important role in controlling type 1 diabetes development in NOD mice.
5142 16804081 Deficiency in NOD antigen-presenting cell function may be responsible for suboptimal CD4+CD25+ T-cell-mediated regulation and type 1 diabetes development in NOD mice.
5143 16804081 CD4(+)CD25(+) regulatory cells play a crucial role in controlling various autoimmune diseases, and a deficiency in their number or function could be involved in disease development.
5144 16804081 The current study shows that NOD mice had fewer CD4(+)CD25(+) regulatory cells, which expressed normal levels of glucocorticoid-induced tumor necrosis factor receptor and cytotoxic T-lymphocyte-associated antigen-4.
5145 16804081 We have also found that NOD CD4(+)CD25(+) cells regulate poorly in vitro after stimulation with anti-CD3 and NOD APCs in comparison with B6 CD4(+)CD25(+) cells stimulated with B6 APCs.
5146 16804081 Surprisingly, stimulation of NOD CD4(+)CD25(+) cells with B6 APCs restored regulation, whereas with the reciprocal combination, NOD APCs failed to activate B6 CD4(+)CD25(+) cells properly.
5147 16804081 Interestingly, APCs from disease-free (>30 weeks of age), but not diabetic, NOD mice were able to activate CD4(+)CD25(+) regulatory function in vitro and apparently in vivo because only spleens of disease-free NOD mice contained potent CD4(+)CD25(+) regulatory cells that prevented disease development when transferred into young NOD recipients.
5148 16804081 These data suggest that the failure of NOD APCs to activate CD4(+)CD25(+) regulatory cells may play an important role in controlling type 1 diabetes development in NOD mice.
5149 16804081 Deficiency in NOD antigen-presenting cell function may be responsible for suboptimal CD4+CD25+ T-cell-mediated regulation and type 1 diabetes development in NOD mice.
5150 16804081 CD4(+)CD25(+) regulatory cells play a crucial role in controlling various autoimmune diseases, and a deficiency in their number or function could be involved in disease development.
5151 16804081 The current study shows that NOD mice had fewer CD4(+)CD25(+) regulatory cells, which expressed normal levels of glucocorticoid-induced tumor necrosis factor receptor and cytotoxic T-lymphocyte-associated antigen-4.
5152 16804081 We have also found that NOD CD4(+)CD25(+) cells regulate poorly in vitro after stimulation with anti-CD3 and NOD APCs in comparison with B6 CD4(+)CD25(+) cells stimulated with B6 APCs.
5153 16804081 Surprisingly, stimulation of NOD CD4(+)CD25(+) cells with B6 APCs restored regulation, whereas with the reciprocal combination, NOD APCs failed to activate B6 CD4(+)CD25(+) cells properly.
5154 16804081 Interestingly, APCs from disease-free (>30 weeks of age), but not diabetic, NOD mice were able to activate CD4(+)CD25(+) regulatory function in vitro and apparently in vivo because only spleens of disease-free NOD mice contained potent CD4(+)CD25(+) regulatory cells that prevented disease development when transferred into young NOD recipients.
5155 16804081 These data suggest that the failure of NOD APCs to activate CD4(+)CD25(+) regulatory cells may play an important role in controlling type 1 diabetes development in NOD mice.
5156 16809320 Interaction of antigen-presenting cell CD1d with distinct natural killer T-cell ("NKT") populations can induce rapid gamma interferon (IFN-gamma) production and NK-cell activation.
5157 16809320 However, this was not reflected in the relative levels of NK-cell activation but rather by the responses of both CD4(+) and CD8(+) T-cell populations.
5158 16809320 Repeated EMCV infection in vitro induced less IFN-gamma and alpha interferon (IFN-alpha) from CD1d-deficient splenocytes than with the wild type.
5159 16818678 Most T reg cells are defined based on expression of CD4, CD25, and the transcription factor, FoxP3.
5160 16818678 We found that the IL-7 receptor (CD127) is down-regulated on a subset of CD4(+) T cells in peripheral blood.
5161 16818678 A combination of CD4, CD25, and CD127 resulted in a highly purified population of T reg cells accounting for significantly more cells that previously identified based on other cell surface markers.
5162 16818678 In fact, cells separated based solely on CD4 and CD127 expression were anergic and, although representing at least three times the number of cells (including both CD25(+)CD4(+) and CD25(-)CD4(+) T cell subsets), were as suppressive as the "classic" CD4(+)CD25(hi) T reg cell subset.
5163 16818678 Most T reg cells are defined based on expression of CD4, CD25, and the transcription factor, FoxP3.
5164 16818678 We found that the IL-7 receptor (CD127) is down-regulated on a subset of CD4(+) T cells in peripheral blood.
5165 16818678 A combination of CD4, CD25, and CD127 resulted in a highly purified population of T reg cells accounting for significantly more cells that previously identified based on other cell surface markers.
5166 16818678 In fact, cells separated based solely on CD4 and CD127 expression were anergic and, although representing at least three times the number of cells (including both CD25(+)CD4(+) and CD25(-)CD4(+) T cell subsets), were as suppressive as the "classic" CD4(+)CD25(hi) T reg cell subset.
5167 16818678 Most T reg cells are defined based on expression of CD4, CD25, and the transcription factor, FoxP3.
5168 16818678 We found that the IL-7 receptor (CD127) is down-regulated on a subset of CD4(+) T cells in peripheral blood.
5169 16818678 A combination of CD4, CD25, and CD127 resulted in a highly purified population of T reg cells accounting for significantly more cells that previously identified based on other cell surface markers.
5170 16818678 In fact, cells separated based solely on CD4 and CD127 expression were anergic and, although representing at least three times the number of cells (including both CD25(+)CD4(+) and CD25(-)CD4(+) T cell subsets), were as suppressive as the "classic" CD4(+)CD25(hi) T reg cell subset.
5171 16818678 Most T reg cells are defined based on expression of CD4, CD25, and the transcription factor, FoxP3.
5172 16818678 We found that the IL-7 receptor (CD127) is down-regulated on a subset of CD4(+) T cells in peripheral blood.
5173 16818678 A combination of CD4, CD25, and CD127 resulted in a highly purified population of T reg cells accounting for significantly more cells that previously identified based on other cell surface markers.
5174 16818678 In fact, cells separated based solely on CD4 and CD127 expression were anergic and, although representing at least three times the number of cells (including both CD25(+)CD4(+) and CD25(-)CD4(+) T cell subsets), were as suppressive as the "classic" CD4(+)CD25(hi) T reg cell subset.
5175 16835866 The purpose of this study was to observe the islet changes of pancreas in insulin-dependent diabetes mellitus (IDDM) mice in comparison to normal mice after application of an extract from Siraitia grosvenori fruits containing mogrosides, in particular, mogroside V.
5176 16835866 In addition, alloxan induced a notable increase in the expression of CD8+ lymphocytes to form a dramatic decrease in CD4+/CD8+ ratio (while CD4+ was unchanged).
5177 16835866 Furthermore, at low dose, MG regulated the immune imbalance observed in alloxan-induced IDDM mice by up-regulating the CD4+ T-lymphocyte subsets and CD4/CD8 ratio, and altering the intracellular cytokine profiles.
5178 16835866 The expression of the pro-inflammatory Th1 cytokines: IFN-gamma, TNF-alpha in splenic lymphocytes was altered toward a beneficial Th2 pattern.
5179 16835866 The purpose of this study was to observe the islet changes of pancreas in insulin-dependent diabetes mellitus (IDDM) mice in comparison to normal mice after application of an extract from Siraitia grosvenori fruits containing mogrosides, in particular, mogroside V.
5180 16835866 In addition, alloxan induced a notable increase in the expression of CD8+ lymphocytes to form a dramatic decrease in CD4+/CD8+ ratio (while CD4+ was unchanged).
5181 16835866 Furthermore, at low dose, MG regulated the immune imbalance observed in alloxan-induced IDDM mice by up-regulating the CD4+ T-lymphocyte subsets and CD4/CD8 ratio, and altering the intracellular cytokine profiles.
5182 16835866 The expression of the pro-inflammatory Th1 cytokines: IFN-gamma, TNF-alpha in splenic lymphocytes was altered toward a beneficial Th2 pattern.
5183 16838180 During the past 10 years, CD4(+)CD25(+)Foxp3(+) regulatory T cells (Treg) have been extensively studied for their function in autoimmune disease.
5184 16838180 However, downmodulation of dendritic cell function and secretion of inhibitory cytokines such as IL-10 and TGF-beta might underlie Treg function in vivo.
5185 16860296 Therefore, we conclude that CD4+, CD25+ regulatory T cells are required for the induction as well as maintenance of tolerance in this gene therapy model.
5186 16868084 Recently, we have identified proinsulin (P-Ins)(73-90) as an immunodominant T cell epitope of HLA-DRB1*0401 (DR4) subjects with beta-islet cell autoimmunity and of HLA-DR4/CD4 double-transgenic mice immunized with human P-Ins.
5187 16868084 The human T cell clone was forkhead transcription factor 3 (Foxp3)-positive, a marker for regulatory T cell lineages, and secreted predominantly IL-5, IL-10, and low levels of IFNgamma in response to P-Ins(73-90).
5188 16879996 Neither the introduction of activated, self-antigen-specific CD4(+) helper T cells nor a global inflammatory stimulus were sufficient to activate the low-avidity CD8(+) T cells and did not break tolerance.
5189 16887976 Little is known about the in vivo conditions in which CD4+CD25+ regulatory T cells (T(reg)) exert their suppressive effect in nonlymphopenic mice.
5190 16918689 CD4+CD25+ regulatory T cells (Treg) constitute an important mechanism of peripheral immune tolerance.
5191 16920929 CD38 is required for the peripheral survival of immunotolerogenic CD4+ invariant NK T cells in nonobese diabetic mice.
5192 16920929 Unlike in standard NOD mice, alpha-galactosylceramide pretreatment did not protect the CD38-deficient stock from T1D induced by an adoptively transferred pancreatic beta cell-autoreactive CD8 T cell clone (AI4).
5193 16920929 We found that in the absence of CD38, ADP-ribosyltransferase 2 preferentially activates apoptotic deletion of peripheral iNKT cells, especially the CD4+ subset.
5194 16920929 CD38 is required for the peripheral survival of immunotolerogenic CD4+ invariant NK T cells in nonobese diabetic mice.
5195 16920929 Unlike in standard NOD mice, alpha-galactosylceramide pretreatment did not protect the CD38-deficient stock from T1D induced by an adoptively transferred pancreatic beta cell-autoreactive CD8 T cell clone (AI4).
5196 16920929 We found that in the absence of CD38, ADP-ribosyltransferase 2 preferentially activates apoptotic deletion of peripheral iNKT cells, especially the CD4+ subset.
5197 16951329 Protection from type 1 diabetes by invariant NK T cells requires the activity of CD4+CD25+ regulatory T cells.
5198 16951329 To further investigate how iNKT cells protect from T1D, we analyzed whether iNKT cells require the presence of another subset(s) of regulatory T cells (Treg), such as CD4+ CD25+ Treg, for this protection.
5199 16951329 We found that CD4+ CD25+ T cells from NOD.CD1d(-/-) mice deficient in iNKT cell function similarly in vitro to CD4+ CD25+ T cells from wild-type NOD mice and suppress the proliferation of NOD T responder cells upon alpha-GalCer stimulation.
5200 16951329 Cotransfer of NOD diabetogenic T cells with CD4+ CD25+ Tregs from NOD mice pretreated with alpha-GalCer demonstrated that activated iNKT cells do not influence the ability of T(regs) to inhibit the transfer of T1D.
5201 16951329 In contrast, protection from T1D mediated by transfer of activated iNKT cells requires the activity of CD4+ CD25+ T cells, because splenocytes pretreated with alpha-GalCer and then inactivated by anti-CD25 of CD25+ cells did not protect from T1D.
5202 16951329 Similarly, mice inactivated of CD4+ CD25+ T cells before alpha-GalCer treatment were also not protected from T1D.
5203 16951329 Our data suggest that CD4+ CD25+ T cells retain their function during iNKT cell activation, and that the activity of CD4+ CD25+ Tregs is required for iNKT cells to transfer protection from T1D.
5204 16951329 Protection from type 1 diabetes by invariant NK T cells requires the activity of CD4+CD25+ regulatory T cells.
5205 16951329 To further investigate how iNKT cells protect from T1D, we analyzed whether iNKT cells require the presence of another subset(s) of regulatory T cells (Treg), such as CD4+ CD25+ Treg, for this protection.
5206 16951329 We found that CD4+ CD25+ T cells from NOD.CD1d(-/-) mice deficient in iNKT cell function similarly in vitro to CD4+ CD25+ T cells from wild-type NOD mice and suppress the proliferation of NOD T responder cells upon alpha-GalCer stimulation.
5207 16951329 Cotransfer of NOD diabetogenic T cells with CD4+ CD25+ Tregs from NOD mice pretreated with alpha-GalCer demonstrated that activated iNKT cells do not influence the ability of T(regs) to inhibit the transfer of T1D.
5208 16951329 In contrast, protection from T1D mediated by transfer of activated iNKT cells requires the activity of CD4+ CD25+ T cells, because splenocytes pretreated with alpha-GalCer and then inactivated by anti-CD25 of CD25+ cells did not protect from T1D.
5209 16951329 Similarly, mice inactivated of CD4+ CD25+ T cells before alpha-GalCer treatment were also not protected from T1D.
5210 16951329 Our data suggest that CD4+ CD25+ T cells retain their function during iNKT cell activation, and that the activity of CD4+ CD25+ Tregs is required for iNKT cells to transfer protection from T1D.
5211 16951329 Protection from type 1 diabetes by invariant NK T cells requires the activity of CD4+CD25+ regulatory T cells.
5212 16951329 To further investigate how iNKT cells protect from T1D, we analyzed whether iNKT cells require the presence of another subset(s) of regulatory T cells (Treg), such as CD4+ CD25+ Treg, for this protection.
5213 16951329 We found that CD4+ CD25+ T cells from NOD.CD1d(-/-) mice deficient in iNKT cell function similarly in vitro to CD4+ CD25+ T cells from wild-type NOD mice and suppress the proliferation of NOD T responder cells upon alpha-GalCer stimulation.
5214 16951329 Cotransfer of NOD diabetogenic T cells with CD4+ CD25+ Tregs from NOD mice pretreated with alpha-GalCer demonstrated that activated iNKT cells do not influence the ability of T(regs) to inhibit the transfer of T1D.
5215 16951329 In contrast, protection from T1D mediated by transfer of activated iNKT cells requires the activity of CD4+ CD25+ T cells, because splenocytes pretreated with alpha-GalCer and then inactivated by anti-CD25 of CD25+ cells did not protect from T1D.
5216 16951329 Similarly, mice inactivated of CD4+ CD25+ T cells before alpha-GalCer treatment were also not protected from T1D.
5217 16951329 Our data suggest that CD4+ CD25+ T cells retain their function during iNKT cell activation, and that the activity of CD4+ CD25+ Tregs is required for iNKT cells to transfer protection from T1D.
5218 16951329 Protection from type 1 diabetes by invariant NK T cells requires the activity of CD4+CD25+ regulatory T cells.
5219 16951329 To further investigate how iNKT cells protect from T1D, we analyzed whether iNKT cells require the presence of another subset(s) of regulatory T cells (Treg), such as CD4+ CD25+ Treg, for this protection.
5220 16951329 We found that CD4+ CD25+ T cells from NOD.CD1d(-/-) mice deficient in iNKT cell function similarly in vitro to CD4+ CD25+ T cells from wild-type NOD mice and suppress the proliferation of NOD T responder cells upon alpha-GalCer stimulation.
5221 16951329 Cotransfer of NOD diabetogenic T cells with CD4+ CD25+ Tregs from NOD mice pretreated with alpha-GalCer demonstrated that activated iNKT cells do not influence the ability of T(regs) to inhibit the transfer of T1D.
5222 16951329 In contrast, protection from T1D mediated by transfer of activated iNKT cells requires the activity of CD4+ CD25+ T cells, because splenocytes pretreated with alpha-GalCer and then inactivated by anti-CD25 of CD25+ cells did not protect from T1D.
5223 16951329 Similarly, mice inactivated of CD4+ CD25+ T cells before alpha-GalCer treatment were also not protected from T1D.
5224 16951329 Our data suggest that CD4+ CD25+ T cells retain their function during iNKT cell activation, and that the activity of CD4+ CD25+ Tregs is required for iNKT cells to transfer protection from T1D.
5225 16951329 Protection from type 1 diabetes by invariant NK T cells requires the activity of CD4+CD25+ regulatory T cells.
5226 16951329 To further investigate how iNKT cells protect from T1D, we analyzed whether iNKT cells require the presence of another subset(s) of regulatory T cells (Treg), such as CD4+ CD25+ Treg, for this protection.
5227 16951329 We found that CD4+ CD25+ T cells from NOD.CD1d(-/-) mice deficient in iNKT cell function similarly in vitro to CD4+ CD25+ T cells from wild-type NOD mice and suppress the proliferation of NOD T responder cells upon alpha-GalCer stimulation.
5228 16951329 Cotransfer of NOD diabetogenic T cells with CD4+ CD25+ Tregs from NOD mice pretreated with alpha-GalCer demonstrated that activated iNKT cells do not influence the ability of T(regs) to inhibit the transfer of T1D.
5229 16951329 In contrast, protection from T1D mediated by transfer of activated iNKT cells requires the activity of CD4+ CD25+ T cells, because splenocytes pretreated with alpha-GalCer and then inactivated by anti-CD25 of CD25+ cells did not protect from T1D.
5230 16951329 Similarly, mice inactivated of CD4+ CD25+ T cells before alpha-GalCer treatment were also not protected from T1D.
5231 16951329 Our data suggest that CD4+ CD25+ T cells retain their function during iNKT cell activation, and that the activity of CD4+ CD25+ Tregs is required for iNKT cells to transfer protection from T1D.
5232 16951329 Protection from type 1 diabetes by invariant NK T cells requires the activity of CD4+CD25+ regulatory T cells.
5233 16951329 To further investigate how iNKT cells protect from T1D, we analyzed whether iNKT cells require the presence of another subset(s) of regulatory T cells (Treg), such as CD4+ CD25+ Treg, for this protection.
5234 16951329 We found that CD4+ CD25+ T cells from NOD.CD1d(-/-) mice deficient in iNKT cell function similarly in vitro to CD4+ CD25+ T cells from wild-type NOD mice and suppress the proliferation of NOD T responder cells upon alpha-GalCer stimulation.
5235 16951329 Cotransfer of NOD diabetogenic T cells with CD4+ CD25+ Tregs from NOD mice pretreated with alpha-GalCer demonstrated that activated iNKT cells do not influence the ability of T(regs) to inhibit the transfer of T1D.
5236 16951329 In contrast, protection from T1D mediated by transfer of activated iNKT cells requires the activity of CD4+ CD25+ T cells, because splenocytes pretreated with alpha-GalCer and then inactivated by anti-CD25 of CD25+ cells did not protect from T1D.
5237 16951329 Similarly, mice inactivated of CD4+ CD25+ T cells before alpha-GalCer treatment were also not protected from T1D.
5238 16951329 Our data suggest that CD4+ CD25+ T cells retain their function during iNKT cell activation, and that the activity of CD4+ CD25+ Tregs is required for iNKT cells to transfer protection from T1D.
5239 16951329 Protection from type 1 diabetes by invariant NK T cells requires the activity of CD4+CD25+ regulatory T cells.
5240 16951329 To further investigate how iNKT cells protect from T1D, we analyzed whether iNKT cells require the presence of another subset(s) of regulatory T cells (Treg), such as CD4+ CD25+ Treg, for this protection.
5241 16951329 We found that CD4+ CD25+ T cells from NOD.CD1d(-/-) mice deficient in iNKT cell function similarly in vitro to CD4+ CD25+ T cells from wild-type NOD mice and suppress the proliferation of NOD T responder cells upon alpha-GalCer stimulation.
5242 16951329 Cotransfer of NOD diabetogenic T cells with CD4+ CD25+ Tregs from NOD mice pretreated with alpha-GalCer demonstrated that activated iNKT cells do not influence the ability of T(regs) to inhibit the transfer of T1D.
5243 16951329 In contrast, protection from T1D mediated by transfer of activated iNKT cells requires the activity of CD4+ CD25+ T cells, because splenocytes pretreated with alpha-GalCer and then inactivated by anti-CD25 of CD25+ cells did not protect from T1D.
5244 16951329 Similarly, mice inactivated of CD4+ CD25+ T cells before alpha-GalCer treatment were also not protected from T1D.
5245 16951329 Our data suggest that CD4+ CD25+ T cells retain their function during iNKT cell activation, and that the activity of CD4+ CD25+ Tregs is required for iNKT cells to transfer protection from T1D.
5246 16960873 In addition, the vitamin D(3) analog did not stimulate an enhancement in the expression of CD4 and CD25 in BB rats as it does in NOD mice, which may explain the failure of this as well as other antidiabetic treatments in the BB animal model of type 1 diabetes.
5247 16970282 B7-H4.Ig protein was purified from the culture supernatant of 293T cells transfected by a B7-H4.Ig plasmid (pMIgV, containing a human B7-H4 cDNA and a mouse IgG2a Fc cDNA).
5248 16970282 Our preliminary studies showed that immobilized fusion protein human B7-H4.Ig (coated with 5 microg/ml for 2 h at 37 degrees C), but not control Ig, clearly inhibited the proliferation of activated CD4+ and CD8+ T cells of patients induced by anti-CD3 antibody in CFSE assays.
5249 16972262 BB rats were therefore checked at day 21 up to day 90 of life for blood glucose, insulin levels, degree of islet infiltration, expression of proinflammatory and protective cytokines and antibodies including CD4, CD8, CD25, LFA-1, and ICAM-1.
5250 16972262 We found that islets of non-diabetic BB rats became positive to both IL-1beta and IL-4 very early on, confirming a local but intense production of both cytokines within the islets during the initial non-diabetic period.
5251 16972262 In addition, we observed that the production of these interleukins together with the expression levels of CD4 and CD25 are events predictive for type 1 diabetes onset in non-diabetic BB rats, as for non-obese diabetic (NOD) mice.
5252 16972262 In particular, the production of IL-1beta and IL-4 during the non-diabetic period together with the lack of enhancement of CD4 and CD25, indicating selective recruitment of activated T cells, may explain the failure of anti-diabetic treatments in this animal model of type 1 diabetes.
5253 16972262 BB rats were therefore checked at day 21 up to day 90 of life for blood glucose, insulin levels, degree of islet infiltration, expression of proinflammatory and protective cytokines and antibodies including CD4, CD8, CD25, LFA-1, and ICAM-1.
5254 16972262 We found that islets of non-diabetic BB rats became positive to both IL-1beta and IL-4 very early on, confirming a local but intense production of both cytokines within the islets during the initial non-diabetic period.
5255 16972262 In addition, we observed that the production of these interleukins together with the expression levels of CD4 and CD25 are events predictive for type 1 diabetes onset in non-diabetic BB rats, as for non-obese diabetic (NOD) mice.
5256 16972262 In particular, the production of IL-1beta and IL-4 during the non-diabetic period together with the lack of enhancement of CD4 and CD25, indicating selective recruitment of activated T cells, may explain the failure of anti-diabetic treatments in this animal model of type 1 diabetes.
5257 16972262 BB rats were therefore checked at day 21 up to day 90 of life for blood glucose, insulin levels, degree of islet infiltration, expression of proinflammatory and protective cytokines and antibodies including CD4, CD8, CD25, LFA-1, and ICAM-1.
5258 16972262 We found that islets of non-diabetic BB rats became positive to both IL-1beta and IL-4 very early on, confirming a local but intense production of both cytokines within the islets during the initial non-diabetic period.
5259 16972262 In addition, we observed that the production of these interleukins together with the expression levels of CD4 and CD25 are events predictive for type 1 diabetes onset in non-diabetic BB rats, as for non-obese diabetic (NOD) mice.
5260 16972262 In particular, the production of IL-1beta and IL-4 during the non-diabetic period together with the lack of enhancement of CD4 and CD25, indicating selective recruitment of activated T cells, may explain the failure of anti-diabetic treatments in this animal model of type 1 diabetes.
5261 16979383 We have identified for the first time an age-dependent spontaneous loss of tolerance to two self-antigenic epitopes derived from putative diabetes-associated antigens glutamic acid decarboxylase (GAD65) and glial fibrillary acidic protein (GFAP) in RIP-B7/DRB1*0404 HLA transgenic mice.
5262 16979383 Diabetic and older non-diabetic mice exhibited a proliferative response to an immunodominant epitope from GAD65 (555-567) and also from GFAP (240-252) but not from an immunogenic epitope from diabetes-associated islet-specific glucose-6-phosphatase catalytic subunit-related protein.
5263 16979383 Islet infiltrates in older non-diabetic mice and diabetic mice contain CD4(+)/FoxP3(+) cells and suggest the presence of a regulatory mechanism prior and during diabetic disease.
5264 17005288 To investigate the pathogenesis of LADA, we examined the lymphocyte subsets including the CD4(+)CD25(+) T-cells in 60 LADA patients and 30 patients of type 2 diabetes and 30 healthy individuals by FACS.
5265 17005288 And we compared the expression of FOXP3 mRNA in CD4(+) T-cell between 10 patients of LADA and 10 matched healthy individuals by real time PCR.
5266 17005288 The percent of CD4(+)CD25(+) T-cells were higher (11.89+/-4.96% versus 8.16+/-3.65%, P<0.01), and the percent CD8(+) T-cells elevated (24.58+/-6.80% versus 19.39+/-7.12, P<0.01) in LADA patients than healthy individuals.
5267 17005288 While the expression of FOXP3 mRNA in CD4(+) T-cell was markedly decreased in LADA patients (0.52-fold, n=10, P=0.004) compared with normal subjects.
5268 17005288 To investigate the pathogenesis of LADA, we examined the lymphocyte subsets including the CD4(+)CD25(+) T-cells in 60 LADA patients and 30 patients of type 2 diabetes and 30 healthy individuals by FACS.
5269 17005288 And we compared the expression of FOXP3 mRNA in CD4(+) T-cell between 10 patients of LADA and 10 matched healthy individuals by real time PCR.
5270 17005288 The percent of CD4(+)CD25(+) T-cells were higher (11.89+/-4.96% versus 8.16+/-3.65%, P<0.01), and the percent CD8(+) T-cells elevated (24.58+/-6.80% versus 19.39+/-7.12, P<0.01) in LADA patients than healthy individuals.
5271 17005288 While the expression of FOXP3 mRNA in CD4(+) T-cell was markedly decreased in LADA patients (0.52-fold, n=10, P=0.004) compared with normal subjects.
5272 17005288 To investigate the pathogenesis of LADA, we examined the lymphocyte subsets including the CD4(+)CD25(+) T-cells in 60 LADA patients and 30 patients of type 2 diabetes and 30 healthy individuals by FACS.
5273 17005288 And we compared the expression of FOXP3 mRNA in CD4(+) T-cell between 10 patients of LADA and 10 matched healthy individuals by real time PCR.
5274 17005288 The percent of CD4(+)CD25(+) T-cells were higher (11.89+/-4.96% versus 8.16+/-3.65%, P<0.01), and the percent CD8(+) T-cells elevated (24.58+/-6.80% versus 19.39+/-7.12, P<0.01) in LADA patients than healthy individuals.
5275 17005288 While the expression of FOXP3 mRNA in CD4(+) T-cell was markedly decreased in LADA patients (0.52-fold, n=10, P=0.004) compared with normal subjects.
5276 17005288 To investigate the pathogenesis of LADA, we examined the lymphocyte subsets including the CD4(+)CD25(+) T-cells in 60 LADA patients and 30 patients of type 2 diabetes and 30 healthy individuals by FACS.
5277 17005288 And we compared the expression of FOXP3 mRNA in CD4(+) T-cell between 10 patients of LADA and 10 matched healthy individuals by real time PCR.
5278 17005288 The percent of CD4(+)CD25(+) T-cells were higher (11.89+/-4.96% versus 8.16+/-3.65%, P<0.01), and the percent CD8(+) T-cells elevated (24.58+/-6.80% versus 19.39+/-7.12, P<0.01) in LADA patients than healthy individuals.
5279 17005288 While the expression of FOXP3 mRNA in CD4(+) T-cell was markedly decreased in LADA patients (0.52-fold, n=10, P=0.004) compared with normal subjects.
5280 17015694 A 20-Mb region of chromosome 4 controls TNF-alpha-mediated CD8+ T cell aggression toward beta cells in type 1 diabetes.
5281 17015694 To identify some of these recessive alleles, we crossed TNF-alpha-NOD mice to diabetes-resistant congenic NOD mice having protective alleles at insulin-dependent diabetes (Idd) loci that control spontaneous T1D at either the preinsulitis (Idd3.Idd5) or postinsulitis (Idd9) phases.
5282 17015694 Lack of protection was not at the level of T cell priming, the efficacy of islet-infiltrating APCs to present islet peptides, nor the ability of high levels of CD4+ Foxp3+ T cells to accumulate in the islets.
5283 17015713 The therapeutic effect of gal-1-DC was accompanied by increased percentage of apoptotic T cells and reduced number of IFN-gamma-secreting CD4+ T cells in pancreatic lymph nodes.
5284 17032246 In a prospective non-randomized study, we intended to evaluate 31 healthy siblings of paediatric patients with type 1 diabetes and explore immune regulatory populations of CD4+CD25+ T cells and natural killer (NK) T cells.
5285 17032246 Immune regulatory function of CD4+CD25+ T cells was tested in vitro.
5286 17032246 Significant differences in CD4+CD25+ but not in NK T cells have been identified.
5287 17032246 Siblings of type 1 diabetes patients carrying high risk HLA alleles (DQA1*05, DQB1*0201, DQB1*0302) had significantly lower number of immune regulatory CD4+CD25+ T cells than the age-matched healthy controls or siblings carrying low-risk HLA alleles (DQB1*0301, DQB1*0603, DQB1*0602).
5288 17032246 Regulatory function of CD4+CD25+ T cells demonstrated a dose-escalation effect.
5289 17032246 In siblings of type 1 diabetes patients, the defect in immune regulatory CD4+CD25+ T cells exists in association with genetic HLA-linked risk for type 1 diabetes.
5290 17032246 In a prospective non-randomized study, we intended to evaluate 31 healthy siblings of paediatric patients with type 1 diabetes and explore immune regulatory populations of CD4+CD25+ T cells and natural killer (NK) T cells.
5291 17032246 Immune regulatory function of CD4+CD25+ T cells was tested in vitro.
5292 17032246 Significant differences in CD4+CD25+ but not in NK T cells have been identified.
5293 17032246 Siblings of type 1 diabetes patients carrying high risk HLA alleles (DQA1*05, DQB1*0201, DQB1*0302) had significantly lower number of immune regulatory CD4+CD25+ T cells than the age-matched healthy controls or siblings carrying low-risk HLA alleles (DQB1*0301, DQB1*0603, DQB1*0602).
5294 17032246 Regulatory function of CD4+CD25+ T cells demonstrated a dose-escalation effect.
5295 17032246 In siblings of type 1 diabetes patients, the defect in immune regulatory CD4+CD25+ T cells exists in association with genetic HLA-linked risk for type 1 diabetes.
5296 17032246 In a prospective non-randomized study, we intended to evaluate 31 healthy siblings of paediatric patients with type 1 diabetes and explore immune regulatory populations of CD4+CD25+ T cells and natural killer (NK) T cells.
5297 17032246 Immune regulatory function of CD4+CD25+ T cells was tested in vitro.
5298 17032246 Significant differences in CD4+CD25+ but not in NK T cells have been identified.
5299 17032246 Siblings of type 1 diabetes patients carrying high risk HLA alleles (DQA1*05, DQB1*0201, DQB1*0302) had significantly lower number of immune regulatory CD4+CD25+ T cells than the age-matched healthy controls or siblings carrying low-risk HLA alleles (DQB1*0301, DQB1*0603, DQB1*0602).
5300 17032246 Regulatory function of CD4+CD25+ T cells demonstrated a dose-escalation effect.
5301 17032246 In siblings of type 1 diabetes patients, the defect in immune regulatory CD4+CD25+ T cells exists in association with genetic HLA-linked risk for type 1 diabetes.
5302 17032246 In a prospective non-randomized study, we intended to evaluate 31 healthy siblings of paediatric patients with type 1 diabetes and explore immune regulatory populations of CD4+CD25+ T cells and natural killer (NK) T cells.
5303 17032246 Immune regulatory function of CD4+CD25+ T cells was tested in vitro.
5304 17032246 Significant differences in CD4+CD25+ but not in NK T cells have been identified.
5305 17032246 Siblings of type 1 diabetes patients carrying high risk HLA alleles (DQA1*05, DQB1*0201, DQB1*0302) had significantly lower number of immune regulatory CD4+CD25+ T cells than the age-matched healthy controls or siblings carrying low-risk HLA alleles (DQB1*0301, DQB1*0603, DQB1*0602).
5306 17032246 Regulatory function of CD4+CD25+ T cells demonstrated a dose-escalation effect.
5307 17032246 In siblings of type 1 diabetes patients, the defect in immune regulatory CD4+CD25+ T cells exists in association with genetic HLA-linked risk for type 1 diabetes.
5308 17032246 In a prospective non-randomized study, we intended to evaluate 31 healthy siblings of paediatric patients with type 1 diabetes and explore immune regulatory populations of CD4+CD25+ T cells and natural killer (NK) T cells.
5309 17032246 Immune regulatory function of CD4+CD25+ T cells was tested in vitro.
5310 17032246 Significant differences in CD4+CD25+ but not in NK T cells have been identified.
5311 17032246 Siblings of type 1 diabetes patients carrying high risk HLA alleles (DQA1*05, DQB1*0201, DQB1*0302) had significantly lower number of immune regulatory CD4+CD25+ T cells than the age-matched healthy controls or siblings carrying low-risk HLA alleles (DQB1*0301, DQB1*0603, DQB1*0602).
5312 17032246 Regulatory function of CD4+CD25+ T cells demonstrated a dose-escalation effect.
5313 17032246 In siblings of type 1 diabetes patients, the defect in immune regulatory CD4+CD25+ T cells exists in association with genetic HLA-linked risk for type 1 diabetes.
5314 17032246 In a prospective non-randomized study, we intended to evaluate 31 healthy siblings of paediatric patients with type 1 diabetes and explore immune regulatory populations of CD4+CD25+ T cells and natural killer (NK) T cells.
5315 17032246 Immune regulatory function of CD4+CD25+ T cells was tested in vitro.
5316 17032246 Significant differences in CD4+CD25+ but not in NK T cells have been identified.
5317 17032246 Siblings of type 1 diabetes patients carrying high risk HLA alleles (DQA1*05, DQB1*0201, DQB1*0302) had significantly lower number of immune regulatory CD4+CD25+ T cells than the age-matched healthy controls or siblings carrying low-risk HLA alleles (DQB1*0301, DQB1*0603, DQB1*0602).
5318 17032246 Regulatory function of CD4+CD25+ T cells demonstrated a dose-escalation effect.
5319 17032246 In siblings of type 1 diabetes patients, the defect in immune regulatory CD4+CD25+ T cells exists in association with genetic HLA-linked risk for type 1 diabetes.
5320 17045415 Furthermore, it is our contention, that in response to beta cell apoptosis during normal remodeling of the pancreas and CCL19/CCL21 expression within the pancreatic lymph nodes (PLNs), gluten-loaded dendritic cells migrate from the small intestine to the PLNs.
5321 17045415 These dendritic cells present gluten-derived antigens on the surface of the PLNs, which leads to migration of CD4(-)CD8(-) gammadelta and CD4(-)CD8(+) alphabeta T cells to the pancreas where they mediate Fas and perforin dependent cytotoxicity.
5322 17045460 SOCS-1 protects from virally-induced CD8 T cell mediated type 1 diabetes.
5323 17045460 CTL-mediated beta-cell killing can occur via perforin-mediated lysis, Fas-Fas-L interaction, and the secretion of TNF-alpha or IFN-gamma.
5324 17045460 Suppressor of cytokine signaling-1 (SOCS-1) represses several crucial cytokine signaling pathways simultaneously, among them IFN-gamma and IL-1-beta.
5325 17045460 We therefore evaluated the protective capacity of islet cell SOCS-1 expression in the CD8(+) mediated RIP-LCMV diabetes model.
5326 17045460 Not only absence of MHC-I and Fas upregulation, but also resistance to cytokine-induced killing of beta-cells and a complete lack of CXCL-10 (IP10) production in islets led to a lack of islet infiltration and impaired activation of autoaggressive CD4(+) and CD8(+) T-cells in these mice.
5327 17045841 Two recent studies have demonstrated that downregulation of the interleukin-7 receptor (CD127) distinguishes Treg cells from activated T cells, facilitating both Treg-cell purification and their functional characterization in human diseases.
5328 17045841 CD127 uniquely enables the purification of FOXP3+ Treg cells and, potentially, also "adaptive" regulatory T-cell subsets from the CD4+CD25- T-cell population.
5329 17081781 Cellular interactions promoting the in vivo expansion of CD4(+)CD25(+)Foxp3(+) regulatory T (Treg) cells for maintenance of immune tolerance remain poorly defined.
5330 17081781 Here we report that mobilized Lin(-)Sca-1(+)c-kit(+) (LSK) hematopoietic progenitor cells (HPCs), unlike medullary hematopoietic stem cells (HSCs), selectively drove the direct, immediate expansion of functional host-derived Treg cells, thereby preventing the progression to overt spontaneous autoimmune diabetes in nonobese diabetic mice.
5331 17081781 Treg cell expansion required cell-to-cell contact and Notch3 signaling, which was mediated selectively through the Notch ligand Jagged2 expressed by the multipotent HPC subset, as assessed by small interfering RNA (siRNA) silencing.
5332 17082572 Cyclophosphamide-induced type-1 diabetes in the NOD mouse is associated with a reduction of CD4+CD25+Foxp3+ regulatory T cells.
5333 17082572 We demonstrate in this study that CY targets CD4+CD25+Foxp3+ Tregs in vivo.
5334 17082572 CD4+CD25+ T cells isolated from CY-treated mice display reduced suppressive activity in vitro and increased expression of apoptotic markers.
5335 17082572 T1D progression was effectively prevented by adoptive transfer of a small number of islet Ag-specific CD4+CD25+ Tregs to CY-treated recipients.
5336 17082572 We conclude that acceleration of T1D by CY is associated with a reduction in CD4+CD25+Foxp3+ Tregs and can be prevented by transfer of CD4+CD25+ Tregs.
5337 17082572 Cyclophosphamide-induced type-1 diabetes in the NOD mouse is associated with a reduction of CD4+CD25+Foxp3+ regulatory T cells.
5338 17082572 We demonstrate in this study that CY targets CD4+CD25+Foxp3+ Tregs in vivo.
5339 17082572 CD4+CD25+ T cells isolated from CY-treated mice display reduced suppressive activity in vitro and increased expression of apoptotic markers.
5340 17082572 T1D progression was effectively prevented by adoptive transfer of a small number of islet Ag-specific CD4+CD25+ Tregs to CY-treated recipients.
5341 17082572 We conclude that acceleration of T1D by CY is associated with a reduction in CD4+CD25+Foxp3+ Tregs and can be prevented by transfer of CD4+CD25+ Tregs.
5342 17082572 Cyclophosphamide-induced type-1 diabetes in the NOD mouse is associated with a reduction of CD4+CD25+Foxp3+ regulatory T cells.
5343 17082572 We demonstrate in this study that CY targets CD4+CD25+Foxp3+ Tregs in vivo.
5344 17082572 CD4+CD25+ T cells isolated from CY-treated mice display reduced suppressive activity in vitro and increased expression of apoptotic markers.
5345 17082572 T1D progression was effectively prevented by adoptive transfer of a small number of islet Ag-specific CD4+CD25+ Tregs to CY-treated recipients.
5346 17082572 We conclude that acceleration of T1D by CY is associated with a reduction in CD4+CD25+Foxp3+ Tregs and can be prevented by transfer of CD4+CD25+ Tregs.
5347 17082572 Cyclophosphamide-induced type-1 diabetes in the NOD mouse is associated with a reduction of CD4+CD25+Foxp3+ regulatory T cells.
5348 17082572 We demonstrate in this study that CY targets CD4+CD25+Foxp3+ Tregs in vivo.
5349 17082572 CD4+CD25+ T cells isolated from CY-treated mice display reduced suppressive activity in vitro and increased expression of apoptotic markers.
5350 17082572 T1D progression was effectively prevented by adoptive transfer of a small number of islet Ag-specific CD4+CD25+ Tregs to CY-treated recipients.
5351 17082572 We conclude that acceleration of T1D by CY is associated with a reduction in CD4+CD25+Foxp3+ Tregs and can be prevented by transfer of CD4+CD25+ Tregs.
5352 17082572 Cyclophosphamide-induced type-1 diabetes in the NOD mouse is associated with a reduction of CD4+CD25+Foxp3+ regulatory T cells.
5353 17082572 We demonstrate in this study that CY targets CD4+CD25+Foxp3+ Tregs in vivo.
5354 17082572 CD4+CD25+ T cells isolated from CY-treated mice display reduced suppressive activity in vitro and increased expression of apoptotic markers.
5355 17082572 T1D progression was effectively prevented by adoptive transfer of a small number of islet Ag-specific CD4+CD25+ Tregs to CY-treated recipients.
5356 17082572 We conclude that acceleration of T1D by CY is associated with a reduction in CD4+CD25+Foxp3+ Tregs and can be prevented by transfer of CD4+CD25+ Tregs.
5357 17087189 The immune phenotype of lymphocytes (CD3+, CD4+, CDr8, CD20+, and CD56+ cells) were studied using flow cytometry (FACS-analysis); their ultrastructure was studied by means of electron microscopy.
5358 17088564 Here we demonstrate that disease-associated autoreactive T cells from patients with type-1 diabetes mellitus or rheumatoid arthritis (RA) are mainly CD4+ CCR7- CD45RA- effector memory T cells (T(EM) cells) with elevated Kv1.3 potassium channel expression.
5359 17088564 In T(EM) cells, Kv1.3 traffics to the immunological synapse during antigen presentation where it colocalizes with Kvbeta2, SAP97, ZIP, p56(lck), and CD4.
5360 17088564 Although Kv1.3 inhibitors [ShK(L5)-amide (SL5) and PAP1] do not prevent immunological synapse formation, they suppress Ca2+-signaling, cytokine production, and proliferation of autoantigen-specific T(EM) cells at pharmacologically relevant concentrations while sparing other classes of T cells.
5361 17088564 Here we demonstrate that disease-associated autoreactive T cells from patients with type-1 diabetes mellitus or rheumatoid arthritis (RA) are mainly CD4+ CCR7- CD45RA- effector memory T cells (T(EM) cells) with elevated Kv1.3 potassium channel expression.
5362 17088564 In T(EM) cells, Kv1.3 traffics to the immunological synapse during antigen presentation where it colocalizes with Kvbeta2, SAP97, ZIP, p56(lck), and CD4.
5363 17088564 Although Kv1.3 inhibitors [ShK(L5)-amide (SL5) and PAP1] do not prevent immunological synapse formation, they suppress Ca2+-signaling, cytokine production, and proliferation of autoantigen-specific T(EM) cells at pharmacologically relevant concentrations while sparing other classes of T cells.
5364 17100770 Evidence for immunological priming and increased frequency of CD4+ CD25+ cord blood T cells in children born to mothers with type 1 diabetes.
5365 17100770 Levels of interleukin (IL)-1beta (P = 0.022), tumour necrosis factor (TNF)-alpha (P = 0.002) and IL-8 (P = 0.0012), as well as the frequency of CD4(+) CD25(+) T cells (P < 0.01) were significantly increased, and the increased levels correlated positively with anti-GAD65 autoantibody (GADA) levels.
5366 17100770 Moreover, CD4(+) CD25(+) T cells of children born to T1D mothers exhibited a more pronounced memory phenotype with increased CCR4 expression and down-regulation of CD62L.
5367 17100770 Evidence for immunological priming and increased frequency of CD4+ CD25+ cord blood T cells in children born to mothers with type 1 diabetes.
5368 17100770 Levels of interleukin (IL)-1beta (P = 0.022), tumour necrosis factor (TNF)-alpha (P = 0.002) and IL-8 (P = 0.0012), as well as the frequency of CD4(+) CD25(+) T cells (P < 0.01) were significantly increased, and the increased levels correlated positively with anti-GAD65 autoantibody (GADA) levels.
5369 17100770 Moreover, CD4(+) CD25(+) T cells of children born to T1D mothers exhibited a more pronounced memory phenotype with increased CCR4 expression and down-regulation of CD62L.
5370 17100770 Evidence for immunological priming and increased frequency of CD4+ CD25+ cord blood T cells in children born to mothers with type 1 diabetes.
5371 17100770 Levels of interleukin (IL)-1beta (P = 0.022), tumour necrosis factor (TNF)-alpha (P = 0.002) and IL-8 (P = 0.0012), as well as the frequency of CD4(+) CD25(+) T cells (P < 0.01) were significantly increased, and the increased levels correlated positively with anti-GAD65 autoantibody (GADA) levels.
5372 17100770 Moreover, CD4(+) CD25(+) T cells of children born to T1D mothers exhibited a more pronounced memory phenotype with increased CCR4 expression and down-regulation of CD62L.
5373 17111929 Regulatory T-cells CD4+CD25+Foxp3, possessing suppressory activity, play the key role in the development of autoimmune diseases, maintenance of peripheral tolerance in transplantation immunity, and the prevention of a pathological immune response to intestinal microflora or microbial infection.
5374 17111929 A decrease in the total number of circulating CD4+CD25+ regulatory T-cells and their suppressive activity have been found in patients suffering from various autoimmune diseases, such as type 1 diabetes, multiple sclerosis, autoimmune hepatitis, psoriatic arthritis, juvenile idiopathic arthritis, and systemic lupus erythematosus (SLE).
5375 17111929 The authors of this study investigated the phenotypic characteristics of peripheral blood lymphocytes in 31 SLE patients and the effect of treatment on the content of CD4+CD25+ T-cells before and after pulse therapy with methylprednisolone and cyclophosphan.
5376 17111929 The data from this research confirm the development of a defect of CD4+CD25+ T-cells at the active phase of SLE, and a possibility to partially correct this defect with an effective therapy.
5377 17111929 Regulatory T-cells CD4+CD25+Foxp3, possessing suppressory activity, play the key role in the development of autoimmune diseases, maintenance of peripheral tolerance in transplantation immunity, and the prevention of a pathological immune response to intestinal microflora or microbial infection.
5378 17111929 A decrease in the total number of circulating CD4+CD25+ regulatory T-cells and their suppressive activity have been found in patients suffering from various autoimmune diseases, such as type 1 diabetes, multiple sclerosis, autoimmune hepatitis, psoriatic arthritis, juvenile idiopathic arthritis, and systemic lupus erythematosus (SLE).
5379 17111929 The authors of this study investigated the phenotypic characteristics of peripheral blood lymphocytes in 31 SLE patients and the effect of treatment on the content of CD4+CD25+ T-cells before and after pulse therapy with methylprednisolone and cyclophosphan.
5380 17111929 The data from this research confirm the development of a defect of CD4+CD25+ T-cells at the active phase of SLE, and a possibility to partially correct this defect with an effective therapy.
5381 17111929 Regulatory T-cells CD4+CD25+Foxp3, possessing suppressory activity, play the key role in the development of autoimmune diseases, maintenance of peripheral tolerance in transplantation immunity, and the prevention of a pathological immune response to intestinal microflora or microbial infection.
5382 17111929 A decrease in the total number of circulating CD4+CD25+ regulatory T-cells and their suppressive activity have been found in patients suffering from various autoimmune diseases, such as type 1 diabetes, multiple sclerosis, autoimmune hepatitis, psoriatic arthritis, juvenile idiopathic arthritis, and systemic lupus erythematosus (SLE).
5383 17111929 The authors of this study investigated the phenotypic characteristics of peripheral blood lymphocytes in 31 SLE patients and the effect of treatment on the content of CD4+CD25+ T-cells before and after pulse therapy with methylprednisolone and cyclophosphan.
5384 17111929 The data from this research confirm the development of a defect of CD4+CD25+ T-cells at the active phase of SLE, and a possibility to partially correct this defect with an effective therapy.
5385 17111929 Regulatory T-cells CD4+CD25+Foxp3, possessing suppressory activity, play the key role in the development of autoimmune diseases, maintenance of peripheral tolerance in transplantation immunity, and the prevention of a pathological immune response to intestinal microflora or microbial infection.
5386 17111929 A decrease in the total number of circulating CD4+CD25+ regulatory T-cells and their suppressive activity have been found in patients suffering from various autoimmune diseases, such as type 1 diabetes, multiple sclerosis, autoimmune hepatitis, psoriatic arthritis, juvenile idiopathic arthritis, and systemic lupus erythematosus (SLE).
5387 17111929 The authors of this study investigated the phenotypic characteristics of peripheral blood lymphocytes in 31 SLE patients and the effect of treatment on the content of CD4+CD25+ T-cells before and after pulse therapy with methylprednisolone and cyclophosphan.
5388 17111929 The data from this research confirm the development of a defect of CD4+CD25+ T-cells at the active phase of SLE, and a possibility to partially correct this defect with an effective therapy.
5389 17114428 The numbers of CD4(+)CD25(+)Foxp3(+) T cells in thymus and periphery of Ii chain-deficient NOD mice were similar to those found in normal NOD mice, in contrast to conventional CD4(+) T cells whose numbers were reduced.
5390 17114453 Using both models, we analyzed CD4+CD25+ and CD4+CD45RC- candidate rat Treg populations.
5391 17114453 In vitro, rat CD4+CD25+ T cells were hyporesponsive and suppressed T cell proliferation in the absence of TGF-beta and IL-10, suggesting that they are natural Tregs.
5392 17114453 Adoptive transfer of purified CD4+CD25+ BBDR T cells to prediabetic BBDP rats prevented diabetes in 80% of recipients.
5393 17114453 The disease-suppressing CD4+CD45RC-CD25- population expressed PD-1 but not Foxp3, which was confined to CD4+CD25+ cells.
5394 17114453 We conclude that CD4+CD25+ cells in the BBDR rat act in vitro and in vivo as natural Tregs.
5395 17114453 Using both models, we analyzed CD4+CD25+ and CD4+CD45RC- candidate rat Treg populations.
5396 17114453 In vitro, rat CD4+CD25+ T cells were hyporesponsive and suppressed T cell proliferation in the absence of TGF-beta and IL-10, suggesting that they are natural Tregs.
5397 17114453 Adoptive transfer of purified CD4+CD25+ BBDR T cells to prediabetic BBDP rats prevented diabetes in 80% of recipients.
5398 17114453 The disease-suppressing CD4+CD45RC-CD25- population expressed PD-1 but not Foxp3, which was confined to CD4+CD25+ cells.
5399 17114453 We conclude that CD4+CD25+ cells in the BBDR rat act in vitro and in vivo as natural Tregs.
5400 17114453 Using both models, we analyzed CD4+CD25+ and CD4+CD45RC- candidate rat Treg populations.
5401 17114453 In vitro, rat CD4+CD25+ T cells were hyporesponsive and suppressed T cell proliferation in the absence of TGF-beta and IL-10, suggesting that they are natural Tregs.
5402 17114453 Adoptive transfer of purified CD4+CD25+ BBDR T cells to prediabetic BBDP rats prevented diabetes in 80% of recipients.
5403 17114453 The disease-suppressing CD4+CD45RC-CD25- population expressed PD-1 but not Foxp3, which was confined to CD4+CD25+ cells.
5404 17114453 We conclude that CD4+CD25+ cells in the BBDR rat act in vitro and in vivo as natural Tregs.
5405 17114453 Using both models, we analyzed CD4+CD25+ and CD4+CD45RC- candidate rat Treg populations.
5406 17114453 In vitro, rat CD4+CD25+ T cells were hyporesponsive and suppressed T cell proliferation in the absence of TGF-beta and IL-10, suggesting that they are natural Tregs.
5407 17114453 Adoptive transfer of purified CD4+CD25+ BBDR T cells to prediabetic BBDP rats prevented diabetes in 80% of recipients.
5408 17114453 The disease-suppressing CD4+CD45RC-CD25- population expressed PD-1 but not Foxp3, which was confined to CD4+CD25+ cells.
5409 17114453 We conclude that CD4+CD25+ cells in the BBDR rat act in vitro and in vivo as natural Tregs.
5410 17114453 Using both models, we analyzed CD4+CD25+ and CD4+CD45RC- candidate rat Treg populations.
5411 17114453 In vitro, rat CD4+CD25+ T cells were hyporesponsive and suppressed T cell proliferation in the absence of TGF-beta and IL-10, suggesting that they are natural Tregs.
5412 17114453 Adoptive transfer of purified CD4+CD25+ BBDR T cells to prediabetic BBDP rats prevented diabetes in 80% of recipients.
5413 17114453 The disease-suppressing CD4+CD45RC-CD25- population expressed PD-1 but not Foxp3, which was confined to CD4+CD25+ cells.
5414 17114453 We conclude that CD4+CD25+ cells in the BBDR rat act in vitro and in vivo as natural Tregs.
5415 17116220 The expression of inflammatory chemokine receptors CCR1, CCR2, CCR4, CCR5, CCR6 and CXCR3 was investigated on circulating T-cell subsets, and CCR1, CCR2 and CCR5 on circulating monocytes before and after IVIg treatment in patients with immune-mediated neuropathies (MMN, n = 7; GBS, n = 1; CIDP, n = 2).
5416 17116220 Furthermore, the proportion of CD45RO-positive CD4+ or CD8+ T-cell subsets was not changed by IVIg treatment.
5417 17127455 Type 1 Diabetes (T1D) is an autoimmune disease requiring contributions from effectors in both CD4+ and CD8+ T cell compartments in order to destroy insulin producing pancreatic beta cells.
5418 17130491 Natural CD4(+)CD25(high) regulatory T-cells are derived from thymus, and accordingly human insulin-specific regulatory T-cells should exist.
5419 17130491 The mRNA expression of regulatory T-cell markers (transforming growth factor-beta, Foxp3, cytotoxic T-lymphocyte antigen-4 [CTLA-4], and inducible co-stimulator [ICOS]) or cytokines (gamma-interferon [IFN-gamma], interleukin [IL]-5, IL-4) was measured by quantitative RT-PCR.
5420 17130491 The secretion of IFN-gamma, IL-2, IL-4, IL-5, and IL-10 was also studied.
5421 17130491 The expression of Foxp3, CTLA-4, and ICOS mRNAs in PBMCs stimulated with bovine or human insulin was higher in patients on insulin treatment than in patients studied before starting insulin treatment.
5422 17130491 The insulin-induced Foxp3 protein expression in CD4(+)CD25(high) cells was detectable in flow cytometry.
5423 17130491 Insulin stimulation in vitro induced increased expression of regulatory T-cell markers, Foxp3, CTLA-4, and ICOS only in patients treated with insulin, suggesting that treatment with human insulin activates insulin-specific regulatory T-cells in children with newly diagnosed type 1 diabetes.
5424 17130491 Natural CD4(+)CD25(high) regulatory T-cells are derived from thymus, and accordingly human insulin-specific regulatory T-cells should exist.
5425 17130491 The mRNA expression of regulatory T-cell markers (transforming growth factor-beta, Foxp3, cytotoxic T-lymphocyte antigen-4 [CTLA-4], and inducible co-stimulator [ICOS]) or cytokines (gamma-interferon [IFN-gamma], interleukin [IL]-5, IL-4) was measured by quantitative RT-PCR.
5426 17130491 The secretion of IFN-gamma, IL-2, IL-4, IL-5, and IL-10 was also studied.
5427 17130491 The expression of Foxp3, CTLA-4, and ICOS mRNAs in PBMCs stimulated with bovine or human insulin was higher in patients on insulin treatment than in patients studied before starting insulin treatment.
5428 17130491 The insulin-induced Foxp3 protein expression in CD4(+)CD25(high) cells was detectable in flow cytometry.
5429 17130491 Insulin stimulation in vitro induced increased expression of regulatory T-cell markers, Foxp3, CTLA-4, and ICOS only in patients treated with insulin, suggesting that treatment with human insulin activates insulin-specific regulatory T-cells in children with newly diagnosed type 1 diabetes.
5430 17130492 A panel of human GAD (hGAD65)-specific CD4 T-cell lines and hybridomas was generated to serve as detection reagents for evaluating the peptide occupancy of DQ8 and DR4.
5431 17130526 A mini meta-analysis of studies on CD4+CD25+ T cells in human type 1 diabetes: report of the Immunology of Diabetes Society T Cell Workshop.
5432 17130526 In health, immunological tolerance is maintained by multiple central and peripheral mechanisms including the action of a specialized set of regulatory T cells characterized by expression of CD4 and CD25 (CD4+CD25+ Treg).
5433 17130526 A mini meta-analysis of studies on CD4+CD25+ T cells in human type 1 diabetes: report of the Immunology of Diabetes Society T Cell Workshop.
5434 17130526 In health, immunological tolerance is maintained by multiple central and peripheral mechanisms including the action of a specialized set of regulatory T cells characterized by expression of CD4 and CD25 (CD4+CD25+ Treg).
5435 17130545 As well, KRV infection preferentially activates effector T cells, such as Th1-like CD45RC(+)CD4(+) T cells and CD8(+) T cells, and downregulates regulatory T cells, such as Th2-like CD45RC(-)CD4(+) T cells.
5436 17130553 The purpose of this article was to investigate the expression levels of CXC chemokine receptor 3 (CXCR3) and CC chemokine receptor 5 (CCR5) on CD4 T cells as Th1 markers in Japanese patients with type 1 diabetes and control subjects.
5437 17130553 CXCR3 expression on CD4 T cells in patients with a fulminant pattern of onset was significantly lower than that in the other groups, and that in patients with a typical pattern of onset was significantly higher than that in the other groups.
5438 17130553 CCR5 expression on CD4 T cells was not different among the three clinical phenotypes.
5439 17130553 The purpose of this article was to investigate the expression levels of CXC chemokine receptor 3 (CXCR3) and CC chemokine receptor 5 (CCR5) on CD4 T cells as Th1 markers in Japanese patients with type 1 diabetes and control subjects.
5440 17130553 CXCR3 expression on CD4 T cells in patients with a fulminant pattern of onset was significantly lower than that in the other groups, and that in patients with a typical pattern of onset was significantly higher than that in the other groups.
5441 17130553 CCR5 expression on CD4 T cells was not different among the three clinical phenotypes.
5442 17130553 The purpose of this article was to investigate the expression levels of CXC chemokine receptor 3 (CXCR3) and CC chemokine receptor 5 (CCR5) on CD4 T cells as Th1 markers in Japanese patients with type 1 diabetes and control subjects.
5443 17130553 CXCR3 expression on CD4 T cells in patients with a fulminant pattern of onset was significantly lower than that in the other groups, and that in patients with a typical pattern of onset was significantly higher than that in the other groups.
5444 17130553 CCR5 expression on CD4 T cells was not different among the three clinical phenotypes.
5445 17130555 Upregulation of Foxp3 expression in mouse and human Treg is IL-2/STAT5 dependent: implications for the NOD STAT5B mutation in diabetes pathogenesis.
5446 17130555 Regulatory T cells (Treg), characterized as CD4(+)/CD25(+hi) T cells, are critical for sustaining and promoting immune tolerance.
5447 17130555 Based on the presence of five STAT5B consensus sequences in the Foxp3 promotor, we hypothesized a critical linkage between IL-2 signaling/STAT5B and Foxp3 expression in Treg.
5448 17130555 Our data show IL-2 activates long-form (LF) STAT5 and sustains Foxp3 expression in Treg.
5449 17130555 In contrast, CD4(+)/CD25(-) T cells do not active LF STAT5 and do not express Foxp3 under the same conditions.
5450 17130555 Examination of human Treg using flow cytometry and intracellular staining for Foxp3 expression likewise demonstrates that IL-2 maintains Foxp3 expression through LF STAT5 signaling.
5451 17130555 Upregulation of Foxp3 expression in mouse and human Treg is IL-2/STAT5 dependent: implications for the NOD STAT5B mutation in diabetes pathogenesis.
5452 17130555 Regulatory T cells (Treg), characterized as CD4(+)/CD25(+hi) T cells, are critical for sustaining and promoting immune tolerance.
5453 17130555 Based on the presence of five STAT5B consensus sequences in the Foxp3 promotor, we hypothesized a critical linkage between IL-2 signaling/STAT5B and Foxp3 expression in Treg.
5454 17130555 Our data show IL-2 activates long-form (LF) STAT5 and sustains Foxp3 expression in Treg.
5455 17130555 In contrast, CD4(+)/CD25(-) T cells do not active LF STAT5 and do not express Foxp3 under the same conditions.
5456 17130555 Examination of human Treg using flow cytometry and intracellular staining for Foxp3 expression likewise demonstrates that IL-2 maintains Foxp3 expression through LF STAT5 signaling.
5457 17142730 Rapamycin promotes expansion of functional CD4+CD25+FOXP3+ regulatory T cells of both healthy subjects and type 1 diabetic patients.
5458 17142730 CD4+CD25+FOXP3+ T regulatory cells (Tregs) are pivotal for the induction and maintenance of peripheral tolerance in both mice and humans.
5459 17142730 Rapamycin has been shown to promote tolerance in experimental models and to favor CD4+CD25+ Treg-dependent suppression.
5460 17142730 We recently reported that rapamycin allows in vitro expansion of murine CD4+CD25+FoxP3+ Tregs, which preserve their suppressive function.
5461 17142730 In the current study, we show that activation of human CD4+ T cells from healthy subjects in the presence of rapamycin leads to growth of CD4+CD25+FOXP3+ Tregs and to selective depletion of CD4+CD25- T effector cells, which are highly sensitive to the antiproliferative effect of the compound.
5462 17142730 The rapamycin-expanded Tregs suppress proliferation of both syngeneic and allogeneic CD4+ and CD8+ T cells.
5463 17142730 Interestingly, rapamycin promotes expansion of functional CD4+CD25+FOXP3+ Tregs also in type 1 diabetic patients, in whom a defect in freshly isolated CD4+CD25+ Tregs has been reported.
5464 17142730 The capacity of rapamycin to allow growth of functional CD4+CD25+FOXP3+ Tregs, but also to deplete T effector cells, can be exploited for the design of novel and safe in vitro protocols for cellular immunotherapy in T cell-mediated diseases.
5465 17142730 Rapamycin promotes expansion of functional CD4+CD25+FOXP3+ regulatory T cells of both healthy subjects and type 1 diabetic patients.
5466 17142730 CD4+CD25+FOXP3+ T regulatory cells (Tregs) are pivotal for the induction and maintenance of peripheral tolerance in both mice and humans.
5467 17142730 Rapamycin has been shown to promote tolerance in experimental models and to favor CD4+CD25+ Treg-dependent suppression.
5468 17142730 We recently reported that rapamycin allows in vitro expansion of murine CD4+CD25+FoxP3+ Tregs, which preserve their suppressive function.
5469 17142730 In the current study, we show that activation of human CD4+ T cells from healthy subjects in the presence of rapamycin leads to growth of CD4+CD25+FOXP3+ Tregs and to selective depletion of CD4+CD25- T effector cells, which are highly sensitive to the antiproliferative effect of the compound.
5470 17142730 The rapamycin-expanded Tregs suppress proliferation of both syngeneic and allogeneic CD4+ and CD8+ T cells.
5471 17142730 Interestingly, rapamycin promotes expansion of functional CD4+CD25+FOXP3+ Tregs also in type 1 diabetic patients, in whom a defect in freshly isolated CD4+CD25+ Tregs has been reported.
5472 17142730 The capacity of rapamycin to allow growth of functional CD4+CD25+FOXP3+ Tregs, but also to deplete T effector cells, can be exploited for the design of novel and safe in vitro protocols for cellular immunotherapy in T cell-mediated diseases.
5473 17142730 Rapamycin promotes expansion of functional CD4+CD25+FOXP3+ regulatory T cells of both healthy subjects and type 1 diabetic patients.
5474 17142730 CD4+CD25+FOXP3+ T regulatory cells (Tregs) are pivotal for the induction and maintenance of peripheral tolerance in both mice and humans.
5475 17142730 Rapamycin has been shown to promote tolerance in experimental models and to favor CD4+CD25+ Treg-dependent suppression.
5476 17142730 We recently reported that rapamycin allows in vitro expansion of murine CD4+CD25+FoxP3+ Tregs, which preserve their suppressive function.
5477 17142730 In the current study, we show that activation of human CD4+ T cells from healthy subjects in the presence of rapamycin leads to growth of CD4+CD25+FOXP3+ Tregs and to selective depletion of CD4+CD25- T effector cells, which are highly sensitive to the antiproliferative effect of the compound.
5478 17142730 The rapamycin-expanded Tregs suppress proliferation of both syngeneic and allogeneic CD4+ and CD8+ T cells.
5479 17142730 Interestingly, rapamycin promotes expansion of functional CD4+CD25+FOXP3+ Tregs also in type 1 diabetic patients, in whom a defect in freshly isolated CD4+CD25+ Tregs has been reported.
5480 17142730 The capacity of rapamycin to allow growth of functional CD4+CD25+FOXP3+ Tregs, but also to deplete T effector cells, can be exploited for the design of novel and safe in vitro protocols for cellular immunotherapy in T cell-mediated diseases.
5481 17142730 Rapamycin promotes expansion of functional CD4+CD25+FOXP3+ regulatory T cells of both healthy subjects and type 1 diabetic patients.
5482 17142730 CD4+CD25+FOXP3+ T regulatory cells (Tregs) are pivotal for the induction and maintenance of peripheral tolerance in both mice and humans.
5483 17142730 Rapamycin has been shown to promote tolerance in experimental models and to favor CD4+CD25+ Treg-dependent suppression.
5484 17142730 We recently reported that rapamycin allows in vitro expansion of murine CD4+CD25+FoxP3+ Tregs, which preserve their suppressive function.
5485 17142730 In the current study, we show that activation of human CD4+ T cells from healthy subjects in the presence of rapamycin leads to growth of CD4+CD25+FOXP3+ Tregs and to selective depletion of CD4+CD25- T effector cells, which are highly sensitive to the antiproliferative effect of the compound.
5486 17142730 The rapamycin-expanded Tregs suppress proliferation of both syngeneic and allogeneic CD4+ and CD8+ T cells.
5487 17142730 Interestingly, rapamycin promotes expansion of functional CD4+CD25+FOXP3+ Tregs also in type 1 diabetic patients, in whom a defect in freshly isolated CD4+CD25+ Tregs has been reported.
5488 17142730 The capacity of rapamycin to allow growth of functional CD4+CD25+FOXP3+ Tregs, but also to deplete T effector cells, can be exploited for the design of novel and safe in vitro protocols for cellular immunotherapy in T cell-mediated diseases.
5489 17142730 Rapamycin promotes expansion of functional CD4+CD25+FOXP3+ regulatory T cells of both healthy subjects and type 1 diabetic patients.
5490 17142730 CD4+CD25+FOXP3+ T regulatory cells (Tregs) are pivotal for the induction and maintenance of peripheral tolerance in both mice and humans.
5491 17142730 Rapamycin has been shown to promote tolerance in experimental models and to favor CD4+CD25+ Treg-dependent suppression.
5492 17142730 We recently reported that rapamycin allows in vitro expansion of murine CD4+CD25+FoxP3+ Tregs, which preserve their suppressive function.
5493 17142730 In the current study, we show that activation of human CD4+ T cells from healthy subjects in the presence of rapamycin leads to growth of CD4+CD25+FOXP3+ Tregs and to selective depletion of CD4+CD25- T effector cells, which are highly sensitive to the antiproliferative effect of the compound.
5494 17142730 The rapamycin-expanded Tregs suppress proliferation of both syngeneic and allogeneic CD4+ and CD8+ T cells.
5495 17142730 Interestingly, rapamycin promotes expansion of functional CD4+CD25+FOXP3+ Tregs also in type 1 diabetic patients, in whom a defect in freshly isolated CD4+CD25+ Tregs has been reported.
5496 17142730 The capacity of rapamycin to allow growth of functional CD4+CD25+FOXP3+ Tregs, but also to deplete T effector cells, can be exploited for the design of novel and safe in vitro protocols for cellular immunotherapy in T cell-mediated diseases.
5497 17142730 Rapamycin promotes expansion of functional CD4+CD25+FOXP3+ regulatory T cells of both healthy subjects and type 1 diabetic patients.
5498 17142730 CD4+CD25+FOXP3+ T regulatory cells (Tregs) are pivotal for the induction and maintenance of peripheral tolerance in both mice and humans.
5499 17142730 Rapamycin has been shown to promote tolerance in experimental models and to favor CD4+CD25+ Treg-dependent suppression.
5500 17142730 We recently reported that rapamycin allows in vitro expansion of murine CD4+CD25+FoxP3+ Tregs, which preserve their suppressive function.
5501 17142730 In the current study, we show that activation of human CD4+ T cells from healthy subjects in the presence of rapamycin leads to growth of CD4+CD25+FOXP3+ Tregs and to selective depletion of CD4+CD25- T effector cells, which are highly sensitive to the antiproliferative effect of the compound.
5502 17142730 The rapamycin-expanded Tregs suppress proliferation of both syngeneic and allogeneic CD4+ and CD8+ T cells.
5503 17142730 Interestingly, rapamycin promotes expansion of functional CD4+CD25+FOXP3+ Tregs also in type 1 diabetic patients, in whom a defect in freshly isolated CD4+CD25+ Tregs has been reported.
5504 17142730 The capacity of rapamycin to allow growth of functional CD4+CD25+FOXP3+ Tregs, but also to deplete T effector cells, can be exploited for the design of novel and safe in vitro protocols for cellular immunotherapy in T cell-mediated diseases.
5505 17142730 Rapamycin promotes expansion of functional CD4+CD25+FOXP3+ regulatory T cells of both healthy subjects and type 1 diabetic patients.
5506 17142730 CD4+CD25+FOXP3+ T regulatory cells (Tregs) are pivotal for the induction and maintenance of peripheral tolerance in both mice and humans.
5507 17142730 Rapamycin has been shown to promote tolerance in experimental models and to favor CD4+CD25+ Treg-dependent suppression.
5508 17142730 We recently reported that rapamycin allows in vitro expansion of murine CD4+CD25+FoxP3+ Tregs, which preserve their suppressive function.
5509 17142730 In the current study, we show that activation of human CD4+ T cells from healthy subjects in the presence of rapamycin leads to growth of CD4+CD25+FOXP3+ Tregs and to selective depletion of CD4+CD25- T effector cells, which are highly sensitive to the antiproliferative effect of the compound.
5510 17142730 The rapamycin-expanded Tregs suppress proliferation of both syngeneic and allogeneic CD4+ and CD8+ T cells.
5511 17142730 Interestingly, rapamycin promotes expansion of functional CD4+CD25+FOXP3+ Tregs also in type 1 diabetic patients, in whom a defect in freshly isolated CD4+CD25+ Tregs has been reported.
5512 17142730 The capacity of rapamycin to allow growth of functional CD4+CD25+FOXP3+ Tregs, but also to deplete T effector cells, can be exploited for the design of novel and safe in vitro protocols for cellular immunotherapy in T cell-mediated diseases.
5513 17142730 Rapamycin promotes expansion of functional CD4+CD25+FOXP3+ regulatory T cells of both healthy subjects and type 1 diabetic patients.
5514 17142730 CD4+CD25+FOXP3+ T regulatory cells (Tregs) are pivotal for the induction and maintenance of peripheral tolerance in both mice and humans.
5515 17142730 Rapamycin has been shown to promote tolerance in experimental models and to favor CD4+CD25+ Treg-dependent suppression.
5516 17142730 We recently reported that rapamycin allows in vitro expansion of murine CD4+CD25+FoxP3+ Tregs, which preserve their suppressive function.
5517 17142730 In the current study, we show that activation of human CD4+ T cells from healthy subjects in the presence of rapamycin leads to growth of CD4+CD25+FOXP3+ Tregs and to selective depletion of CD4+CD25- T effector cells, which are highly sensitive to the antiproliferative effect of the compound.
5518 17142730 The rapamycin-expanded Tregs suppress proliferation of both syngeneic and allogeneic CD4+ and CD8+ T cells.
5519 17142730 Interestingly, rapamycin promotes expansion of functional CD4+CD25+FOXP3+ Tregs also in type 1 diabetic patients, in whom a defect in freshly isolated CD4+CD25+ Tregs has been reported.
5520 17142730 The capacity of rapamycin to allow growth of functional CD4+CD25+FOXP3+ Tregs, but also to deplete T effector cells, can be exploited for the design of novel and safe in vitro protocols for cellular immunotherapy in T cell-mediated diseases.
5521 17151140 We tested CD4, CD8, and CD161 expression and IL-4 and IFN-gamma production on TCR stimulation.
5522 17161871 Results showed that CB-SC could significantly inhibit lymphocyte proliferation and reduce tyrosine phosphorylation of STAT5 in both PHA- and IL-2-stimulated lymphocytes, along with the regulation on the phenotypes of CD4+ and CD8+ T cells.
5523 17161871 Additionally, CB-SC also suppressed the proliferation of IL-2-stimulated CD4+CD25+ regulatory T cells.
5524 17161871 Mechanism studies revealed that programmed death receptor-1 ligand 1 (PD-L1) expressed on CB-SC membrane, together with a soluble factor nitric oxide (NO) released by PHA-stimulated CB-SC, not prostaglandin E2 (PGE2) and transforming growth factor-beta1 (TGF-beta1), mainly contributed to the T cell suppression induced by CB-SC, as demonstrated by blocking experiments with a nitric oxide synthase inhibitor (Nomega-nitro-l-arginine, l-NNA) and a neutralizing antibody to PD-L1.
5525 17161871 Results showed that CB-SC could significantly inhibit lymphocyte proliferation and reduce tyrosine phosphorylation of STAT5 in both PHA- and IL-2-stimulated lymphocytes, along with the regulation on the phenotypes of CD4+ and CD8+ T cells.
5526 17161871 Additionally, CB-SC also suppressed the proliferation of IL-2-stimulated CD4+CD25+ regulatory T cells.
5527 17161871 Mechanism studies revealed that programmed death receptor-1 ligand 1 (PD-L1) expressed on CB-SC membrane, together with a soluble factor nitric oxide (NO) released by PHA-stimulated CB-SC, not prostaglandin E2 (PGE2) and transforming growth factor-beta1 (TGF-beta1), mainly contributed to the T cell suppression induced by CB-SC, as demonstrated by blocking experiments with a nitric oxide synthase inhibitor (Nomega-nitro-l-arginine, l-NNA) and a neutralizing antibody to PD-L1.
5528 17162357 Oral Ag induces Th2 (IL-4/IL-10) and Th3 (TGF-beta) regulatory T cells (Tregs) plus CD4+CD25+ regulatory cells and LAP+T cells.
5529 17162357 Induction of oral tolerance is enhanced by IL-4, IL-10, anti-IL-12, TGF-beta, cholera toxin B subunit (CTB), Flt-3 ligand, anti-CD40 ligand and continuous feeding of Ag.
5530 17163450 CD8+ suppressor-mediated regulation of human CD4+ T cell responses to glutamic acid decarboxylase 65.
5531 17163450 It has been well demonstrated that CD4+ CD25+ regulatory T cells play a significant role in controlling the expansion of autoreactive T cells in the periphery.
5532 17163450 However, some healthy individuals exhibit measurable responses to self peptide even in the presence of CD4+ CD25+ regulatory cells.
5533 17163450 This article describes the regulation of human CD4+ T cell responses to glutamic acid decarboxylase 65 (GAD65), an autoantigen implicated in type-1 diabetes, by autologous CD8+ suppressor T cells.
5534 17163450 In cells cultured from healthy individuals, the inclusion of autologous CD8+ T cells at physiological levels resulted in a dramatic decrease in the magnitude of in vitro CD4+ T cell responses to GAD65 peptide.
5535 17163450 Cell fractionation studies suggested that CD8+ suppressor T cells originate from the CD45RA+ CD27- population.
5536 17163450 The suppression of CD4+ T cell responses to GAD65 in healthy individuals raises the possibility that CD8+ suppressor T cells play an important role in controlling potentially autoreactive T cells in the general population.
5537 17163450 CD8+ suppressor-mediated regulation of human CD4+ T cell responses to glutamic acid decarboxylase 65.
5538 17163450 It has been well demonstrated that CD4+ CD25+ regulatory T cells play a significant role in controlling the expansion of autoreactive T cells in the periphery.
5539 17163450 However, some healthy individuals exhibit measurable responses to self peptide even in the presence of CD4+ CD25+ regulatory cells.
5540 17163450 This article describes the regulation of human CD4+ T cell responses to glutamic acid decarboxylase 65 (GAD65), an autoantigen implicated in type-1 diabetes, by autologous CD8+ suppressor T cells.
5541 17163450 In cells cultured from healthy individuals, the inclusion of autologous CD8+ T cells at physiological levels resulted in a dramatic decrease in the magnitude of in vitro CD4+ T cell responses to GAD65 peptide.
5542 17163450 Cell fractionation studies suggested that CD8+ suppressor T cells originate from the CD45RA+ CD27- population.
5543 17163450 The suppression of CD4+ T cell responses to GAD65 in healthy individuals raises the possibility that CD8+ suppressor T cells play an important role in controlling potentially autoreactive T cells in the general population.
5544 17163450 CD8+ suppressor-mediated regulation of human CD4+ T cell responses to glutamic acid decarboxylase 65.
5545 17163450 It has been well demonstrated that CD4+ CD25+ regulatory T cells play a significant role in controlling the expansion of autoreactive T cells in the periphery.
5546 17163450 However, some healthy individuals exhibit measurable responses to self peptide even in the presence of CD4+ CD25+ regulatory cells.
5547 17163450 This article describes the regulation of human CD4+ T cell responses to glutamic acid decarboxylase 65 (GAD65), an autoantigen implicated in type-1 diabetes, by autologous CD8+ suppressor T cells.
5548 17163450 In cells cultured from healthy individuals, the inclusion of autologous CD8+ T cells at physiological levels resulted in a dramatic decrease in the magnitude of in vitro CD4+ T cell responses to GAD65 peptide.
5549 17163450 Cell fractionation studies suggested that CD8+ suppressor T cells originate from the CD45RA+ CD27- population.
5550 17163450 The suppression of CD4+ T cell responses to GAD65 in healthy individuals raises the possibility that CD8+ suppressor T cells play an important role in controlling potentially autoreactive T cells in the general population.
5551 17163450 CD8+ suppressor-mediated regulation of human CD4+ T cell responses to glutamic acid decarboxylase 65.
5552 17163450 It has been well demonstrated that CD4+ CD25+ regulatory T cells play a significant role in controlling the expansion of autoreactive T cells in the periphery.
5553 17163450 However, some healthy individuals exhibit measurable responses to self peptide even in the presence of CD4+ CD25+ regulatory cells.
5554 17163450 This article describes the regulation of human CD4+ T cell responses to glutamic acid decarboxylase 65 (GAD65), an autoantigen implicated in type-1 diabetes, by autologous CD8+ suppressor T cells.
5555 17163450 In cells cultured from healthy individuals, the inclusion of autologous CD8+ T cells at physiological levels resulted in a dramatic decrease in the magnitude of in vitro CD4+ T cell responses to GAD65 peptide.
5556 17163450 Cell fractionation studies suggested that CD8+ suppressor T cells originate from the CD45RA+ CD27- population.
5557 17163450 The suppression of CD4+ T cell responses to GAD65 in healthy individuals raises the possibility that CD8+ suppressor T cells play an important role in controlling potentially autoreactive T cells in the general population.
5558 17163450 CD8+ suppressor-mediated regulation of human CD4+ T cell responses to glutamic acid decarboxylase 65.
5559 17163450 It has been well demonstrated that CD4+ CD25+ regulatory T cells play a significant role in controlling the expansion of autoreactive T cells in the periphery.
5560 17163450 However, some healthy individuals exhibit measurable responses to self peptide even in the presence of CD4+ CD25+ regulatory cells.
5561 17163450 This article describes the regulation of human CD4+ T cell responses to glutamic acid decarboxylase 65 (GAD65), an autoantigen implicated in type-1 diabetes, by autologous CD8+ suppressor T cells.
5562 17163450 In cells cultured from healthy individuals, the inclusion of autologous CD8+ T cells at physiological levels resulted in a dramatic decrease in the magnitude of in vitro CD4+ T cell responses to GAD65 peptide.
5563 17163450 Cell fractionation studies suggested that CD8+ suppressor T cells originate from the CD45RA+ CD27- population.
5564 17163450 The suppression of CD4+ T cell responses to GAD65 in healthy individuals raises the possibility that CD8+ suppressor T cells play an important role in controlling potentially autoreactive T cells in the general population.
5565 17163450 CD8+ suppressor-mediated regulation of human CD4+ T cell responses to glutamic acid decarboxylase 65.
5566 17163450 It has been well demonstrated that CD4+ CD25+ regulatory T cells play a significant role in controlling the expansion of autoreactive T cells in the periphery.
5567 17163450 However, some healthy individuals exhibit measurable responses to self peptide even in the presence of CD4+ CD25+ regulatory cells.
5568 17163450 This article describes the regulation of human CD4+ T cell responses to glutamic acid decarboxylase 65 (GAD65), an autoantigen implicated in type-1 diabetes, by autologous CD8+ suppressor T cells.
5569 17163450 In cells cultured from healthy individuals, the inclusion of autologous CD8+ T cells at physiological levels resulted in a dramatic decrease in the magnitude of in vitro CD4+ T cell responses to GAD65 peptide.
5570 17163450 Cell fractionation studies suggested that CD8+ suppressor T cells originate from the CD45RA+ CD27- population.
5571 17163450 The suppression of CD4+ T cell responses to GAD65 in healthy individuals raises the possibility that CD8+ suppressor T cells play an important role in controlling potentially autoreactive T cells in the general population.
5572 17164429 Distinct regulation of autoreactive CD4 T cell expansion by interleukin-4 under conditions of lymphopenia.
5573 17164429 Here, we show that IL-4 only enhances the expansion of autoreactive CD4 T cells during lymphopenia and that neither the presence of islet IL-4 nor IL-4 deficiency affects T cell expansion significantly under conditions of immunosufficiency.
5574 17164429 The ability of IL-4 to promote autoreactive CD4 T cell expansion is therefore sensitive to the degree of host immunodeficiency.
5575 17164429 Paradoxically, IL-4 receptor-deficient, autoreactive CD4 T cells proliferate more extensively than wild-type T cells in immunodeficient hosts, suggesting that the growth-promoting effect of islet IL-4 acts indirectly.
5576 17164429 Distinct regulation of autoreactive CD4 T cell expansion by interleukin-4 under conditions of lymphopenia.
5577 17164429 Here, we show that IL-4 only enhances the expansion of autoreactive CD4 T cells during lymphopenia and that neither the presence of islet IL-4 nor IL-4 deficiency affects T cell expansion significantly under conditions of immunosufficiency.
5578 17164429 The ability of IL-4 to promote autoreactive CD4 T cell expansion is therefore sensitive to the degree of host immunodeficiency.
5579 17164429 Paradoxically, IL-4 receptor-deficient, autoreactive CD4 T cells proliferate more extensively than wild-type T cells in immunodeficient hosts, suggesting that the growth-promoting effect of islet IL-4 acts indirectly.
5580 17164429 Distinct regulation of autoreactive CD4 T cell expansion by interleukin-4 under conditions of lymphopenia.
5581 17164429 Here, we show that IL-4 only enhances the expansion of autoreactive CD4 T cells during lymphopenia and that neither the presence of islet IL-4 nor IL-4 deficiency affects T cell expansion significantly under conditions of immunosufficiency.
5582 17164429 The ability of IL-4 to promote autoreactive CD4 T cell expansion is therefore sensitive to the degree of host immunodeficiency.
5583 17164429 Paradoxically, IL-4 receptor-deficient, autoreactive CD4 T cells proliferate more extensively than wild-type T cells in immunodeficient hosts, suggesting that the growth-promoting effect of islet IL-4 acts indirectly.
5584 17164429 Distinct regulation of autoreactive CD4 T cell expansion by interleukin-4 under conditions of lymphopenia.
5585 17164429 Here, we show that IL-4 only enhances the expansion of autoreactive CD4 T cells during lymphopenia and that neither the presence of islet IL-4 nor IL-4 deficiency affects T cell expansion significantly under conditions of immunosufficiency.
5586 17164429 The ability of IL-4 to promote autoreactive CD4 T cell expansion is therefore sensitive to the degree of host immunodeficiency.
5587 17164429 Paradoxically, IL-4 receptor-deficient, autoreactive CD4 T cells proliferate more extensively than wild-type T cells in immunodeficient hosts, suggesting that the growth-promoting effect of islet IL-4 acts indirectly.
5588 17176958 Thymic lymphatic endothelial cells showed suggestive expression patterns of the functional molecules lymphatic vascular endothelial hyaluronan receptor (LYVE)-1, CCL21, CD31 and podoplanin.
5589 17176958 The CD4- and CD8-positive T cells frequently penetrated through the slender lymphatic walls.
5590 17192481 Modulating protective and pathogenic CD4+ subsets via CD137 in type 1 diabetes.
5591 17192481 CD137 (TNFRSF9) is an activation-inducible T-cell costimulatory molecule and a member of the tumor necrosis factor (TNF) receptor superfamily.
5592 17192481 Transfer of CD4(+), but not CD8(+), cells from anti-CD137-treated pre-diabetic NOD mice into NOD-scid mice delayed diabetes onset.
5593 17192481 Anti-CD137 treatment significantly increased the number of CD4(+)CD25(+) cells, which demonstrated intracellular Foxp3 expression and in vitro suppressive activity.
5594 17192481 The CD4(+)CD25(+) cell subset from anti-CD137-treated mice transferred complete protection from diabetes, whereas the CD4(+)CD25(-) cell subset offered no significant protection.
5595 17192481 Modulating protective and pathogenic CD4+ subsets via CD137 in type 1 diabetes.
5596 17192481 CD137 (TNFRSF9) is an activation-inducible T-cell costimulatory molecule and a member of the tumor necrosis factor (TNF) receptor superfamily.
5597 17192481 Transfer of CD4(+), but not CD8(+), cells from anti-CD137-treated pre-diabetic NOD mice into NOD-scid mice delayed diabetes onset.
5598 17192481 Anti-CD137 treatment significantly increased the number of CD4(+)CD25(+) cells, which demonstrated intracellular Foxp3 expression and in vitro suppressive activity.
5599 17192481 The CD4(+)CD25(+) cell subset from anti-CD137-treated mice transferred complete protection from diabetes, whereas the CD4(+)CD25(-) cell subset offered no significant protection.
5600 17192481 Modulating protective and pathogenic CD4+ subsets via CD137 in type 1 diabetes.
5601 17192481 CD137 (TNFRSF9) is an activation-inducible T-cell costimulatory molecule and a member of the tumor necrosis factor (TNF) receptor superfamily.
5602 17192481 Transfer of CD4(+), but not CD8(+), cells from anti-CD137-treated pre-diabetic NOD mice into NOD-scid mice delayed diabetes onset.
5603 17192481 Anti-CD137 treatment significantly increased the number of CD4(+)CD25(+) cells, which demonstrated intracellular Foxp3 expression and in vitro suppressive activity.
5604 17192481 The CD4(+)CD25(+) cell subset from anti-CD137-treated mice transferred complete protection from diabetes, whereas the CD4(+)CD25(-) cell subset offered no significant protection.
5605 17192481 Modulating protective and pathogenic CD4+ subsets via CD137 in type 1 diabetes.
5606 17192481 CD137 (TNFRSF9) is an activation-inducible T-cell costimulatory molecule and a member of the tumor necrosis factor (TNF) receptor superfamily.
5607 17192481 Transfer of CD4(+), but not CD8(+), cells from anti-CD137-treated pre-diabetic NOD mice into NOD-scid mice delayed diabetes onset.
5608 17192481 Anti-CD137 treatment significantly increased the number of CD4(+)CD25(+) cells, which demonstrated intracellular Foxp3 expression and in vitro suppressive activity.
5609 17192481 The CD4(+)CD25(+) cell subset from anti-CD137-treated mice transferred complete protection from diabetes, whereas the CD4(+)CD25(-) cell subset offered no significant protection.
5610 17198560 [Decrease of FOXP3 mRNA in CD4+ T cells in latent autoimmune diabetes in adult].
5611 17200197 To this end, we have used transgenic mice expressing the model autoantigen ovalbumin in pancreatic islets and transgenic ovalbumin-specific CD4 and CD8 T cells.
5612 17202352 Successful Ag activation of naive T helper cells requires at least two signals consisting of TCR and CD28 on the T cell interacting with MHC II and CD80/CD86, respectively, on APCs.
5613 17202352 We have reported that modulation of redox balance with a catalytic antioxidant effectively inhibited the generation of third signal components from the innate immune response (TNF-alpha, IL-1beta, ROS).
5614 17202352 Modulating redox balance led to decreased Ag-specific T cell proliferation and IFN-gamma synthesis by diminishing ROS production in the APC, which affected TNF-alpha levels produced by CD4(+) T cells and impairing effector function.
5615 17206281 At-risk and recent-onset type 1 diabetic subjects have increased apoptosis in the CD4+CD25+ T-cell fraction.
5616 17210729 Dendritic cell-expanded, islet-specific CD4+ CD25+ CD62L+ regulatory T cells restore normoglycemia in diabetic NOD mice.
5617 17210729 We tested whether dendritic cell (DC)-expanded, islet antigen-specific CD4+ CD25+ suppressor T cells could treat diabetes at later stages of disease, when most of the insulin-producing islet beta cells had been destroyed by infiltrating lymphocytes.
5618 17210729 CD4+ CD25+ CD62L+ regulatory T cells (T reg cells) from BDC2.5 T cell receptor transgenic mice were expanded with antigen-pulsed DCs and IL-2, and were then injected into NOD mice.
5619 17210729 Dendritic cell-expanded, islet-specific CD4+ CD25+ CD62L+ regulatory T cells restore normoglycemia in diabetic NOD mice.
5620 17210729 We tested whether dendritic cell (DC)-expanded, islet antigen-specific CD4+ CD25+ suppressor T cells could treat diabetes at later stages of disease, when most of the insulin-producing islet beta cells had been destroyed by infiltrating lymphocytes.
5621 17210729 CD4+ CD25+ CD62L+ regulatory T cells (T reg cells) from BDC2.5 T cell receptor transgenic mice were expanded with antigen-pulsed DCs and IL-2, and were then injected into NOD mice.
5622 17210729 Dendritic cell-expanded, islet-specific CD4+ CD25+ CD62L+ regulatory T cells restore normoglycemia in diabetic NOD mice.
5623 17210729 We tested whether dendritic cell (DC)-expanded, islet antigen-specific CD4+ CD25+ suppressor T cells could treat diabetes at later stages of disease, when most of the insulin-producing islet beta cells had been destroyed by infiltrating lymphocytes.
5624 17210729 CD4+ CD25+ CD62L+ regulatory T cells (T reg cells) from BDC2.5 T cell receptor transgenic mice were expanded with antigen-pulsed DCs and IL-2, and were then injected into NOD mice.
5625 17237411 In this study, we report the production and characterization of a NOD.Nkrp1(b).Nkt1(b) congenic mouse strain, apply microarray expression analyses to limit candidate genes within the 95% confidence region, identify Slamf1 (encoding signaling lymphocyte activation molecule) and Slamf6 (encoding Ly108) as potential candidates, and demonstrate retarded signaling lymphocyte activation molecule expression during T cell development of NOD mice, resulting in reduced expression at the CD4(+)CD8(+) stage, which is consistent with decreased NKT cell production and deranged tolerance induction in NOD mice.
5626 17244154 Reduced CCR4, interleukin-13 and GATA-3 up-regulation in response to type 2 cytokines of cord blood T lymphocytes in infants at genetic risk of type 1 diabetes.
5627 17244154 After culture of CB lymphocytes in type 2 cytokine environment newborn infants carrying DR4-DQ8 haplotype (n=18) showed reduced percentage of CD4 T cells expressing CCR4 (P=0 x 009) and the level of CCR4 mRNA was decreased (P=0 x 008).
5628 17244154 In addition, lower secretion of IL-13 and expression of GATA-3 in CB lymphocytes cultured in type 2 cytokine environment were found in the infants with DR4-DQ8 haplotype (P=0 x 020 and P=0 x 004, respectively) in comparison to newborn infants without DR4-DQ8 and DR3-DQ2 haplotypes (n=37).
5629 17267595 Here we report that injection of donor bone marrow and CD4+ T cell-depleted spleen cells induced chimerism without causing GVHD in overtly diabetic NOD mice conditioned with anti-CD3/CD8 and that induction of chimerism in new-onset diabetic NOD mice led to elimination of insulitis, regeneration of host beta cells, and reversal of hyperglycemia.
5630 17277113 Cognate CD4+ help elicited by resting dendritic cells does not impair the induction of peripheral tolerance in CD8+ T cells.
5631 17277113 In contrast, DC can be "licensed" by CD4(+) T cells to induce cytotoxic function in CD8(+) T cells.
5632 17277113 The question that then arises, whether CD4(+) T cell help could impair peripheral tolerance induction in self-reactive CD8(+) T cells, has not been addressed.
5633 17277113 In this study we show that CD4(+) T cell activation by resting DC results in helper function that transiently promotes the expansion and differentiation of cognate CD8(+) T cells.
5634 17277113 However, both the CD4(+) and CD8(+) T cell populations ultimately undergo partial deletion and acquire Ag unresponsiveness, disabling their ability to destroy OVA-expressing pancreatic beta cells and cause diabetes.
5635 17277113 Thus, effective peripheral tolerance can be induced by resting DC in the presence of CD4(+) and CD8(+) T cells with specificity for the same Ag.
5636 17277113 Cognate CD4+ help elicited by resting dendritic cells does not impair the induction of peripheral tolerance in CD8+ T cells.
5637 17277113 In contrast, DC can be "licensed" by CD4(+) T cells to induce cytotoxic function in CD8(+) T cells.
5638 17277113 The question that then arises, whether CD4(+) T cell help could impair peripheral tolerance induction in self-reactive CD8(+) T cells, has not been addressed.
5639 17277113 In this study we show that CD4(+) T cell activation by resting DC results in helper function that transiently promotes the expansion and differentiation of cognate CD8(+) T cells.
5640 17277113 However, both the CD4(+) and CD8(+) T cell populations ultimately undergo partial deletion and acquire Ag unresponsiveness, disabling their ability to destroy OVA-expressing pancreatic beta cells and cause diabetes.
5641 17277113 Thus, effective peripheral tolerance can be induced by resting DC in the presence of CD4(+) and CD8(+) T cells with specificity for the same Ag.
5642 17277113 Cognate CD4+ help elicited by resting dendritic cells does not impair the induction of peripheral tolerance in CD8+ T cells.
5643 17277113 In contrast, DC can be "licensed" by CD4(+) T cells to induce cytotoxic function in CD8(+) T cells.
5644 17277113 The question that then arises, whether CD4(+) T cell help could impair peripheral tolerance induction in self-reactive CD8(+) T cells, has not been addressed.
5645 17277113 In this study we show that CD4(+) T cell activation by resting DC results in helper function that transiently promotes the expansion and differentiation of cognate CD8(+) T cells.
5646 17277113 However, both the CD4(+) and CD8(+) T cell populations ultimately undergo partial deletion and acquire Ag unresponsiveness, disabling their ability to destroy OVA-expressing pancreatic beta cells and cause diabetes.
5647 17277113 Thus, effective peripheral tolerance can be induced by resting DC in the presence of CD4(+) and CD8(+) T cells with specificity for the same Ag.
5648 17277113 Cognate CD4+ help elicited by resting dendritic cells does not impair the induction of peripheral tolerance in CD8+ T cells.
5649 17277113 In contrast, DC can be "licensed" by CD4(+) T cells to induce cytotoxic function in CD8(+) T cells.
5650 17277113 The question that then arises, whether CD4(+) T cell help could impair peripheral tolerance induction in self-reactive CD8(+) T cells, has not been addressed.
5651 17277113 In this study we show that CD4(+) T cell activation by resting DC results in helper function that transiently promotes the expansion and differentiation of cognate CD8(+) T cells.
5652 17277113 However, both the CD4(+) and CD8(+) T cell populations ultimately undergo partial deletion and acquire Ag unresponsiveness, disabling their ability to destroy OVA-expressing pancreatic beta cells and cause diabetes.
5653 17277113 Thus, effective peripheral tolerance can be induced by resting DC in the presence of CD4(+) and CD8(+) T cells with specificity for the same Ag.
5654 17277113 Cognate CD4+ help elicited by resting dendritic cells does not impair the induction of peripheral tolerance in CD8+ T cells.
5655 17277113 In contrast, DC can be "licensed" by CD4(+) T cells to induce cytotoxic function in CD8(+) T cells.
5656 17277113 The question that then arises, whether CD4(+) T cell help could impair peripheral tolerance induction in self-reactive CD8(+) T cells, has not been addressed.
5657 17277113 In this study we show that CD4(+) T cell activation by resting DC results in helper function that transiently promotes the expansion and differentiation of cognate CD8(+) T cells.
5658 17277113 However, both the CD4(+) and CD8(+) T cell populations ultimately undergo partial deletion and acquire Ag unresponsiveness, disabling their ability to destroy OVA-expressing pancreatic beta cells and cause diabetes.
5659 17277113 Thus, effective peripheral tolerance can be induced by resting DC in the presence of CD4(+) and CD8(+) T cells with specificity for the same Ag.
5660 17277113 Cognate CD4+ help elicited by resting dendritic cells does not impair the induction of peripheral tolerance in CD8+ T cells.
5661 17277113 In contrast, DC can be "licensed" by CD4(+) T cells to induce cytotoxic function in CD8(+) T cells.
5662 17277113 The question that then arises, whether CD4(+) T cell help could impair peripheral tolerance induction in self-reactive CD8(+) T cells, has not been addressed.
5663 17277113 In this study we show that CD4(+) T cell activation by resting DC results in helper function that transiently promotes the expansion and differentiation of cognate CD8(+) T cells.
5664 17277113 However, both the CD4(+) and CD8(+) T cell populations ultimately undergo partial deletion and acquire Ag unresponsiveness, disabling their ability to destroy OVA-expressing pancreatic beta cells and cause diabetes.
5665 17277113 Thus, effective peripheral tolerance can be induced by resting DC in the presence of CD4(+) and CD8(+) T cells with specificity for the same Ag.
5666 17277778 Reduced IL-2 production achieved by either genetic mechanism correlates with reduced function of CD4(+) CD25(+) regulatory T cells, which are critical for maintaining immune homeostasis.
5667 17289146 Blocking studies in B7-1KO mice suggest that B7-H1 provides negative signals for anti islet CD4 and CD8 T-cell expansion but is differentially required for their priming.
5668 17298964 CD4+ CD25+ regulatory T-cells in acute coronary syndromes.
5669 17302896 We therefore examined the recently activated circulating T cell population [CD3+, human leucocyte antigen D-related (HLA-DR+)] using cytokine production and 10 additional subset markers [CD69, CD25, CD122, CD30, CD44v6, CD57, CD71, CCR3 (CD193), CCR5 (CD195) or CXCR3 (CD183)], comparing newly diagnosed adult (ND) (age 18-40 years) patients (n=19) to patients with diabetes for >10 years [long-standing (LS), n=19] and HLA-matched controls (C, n=16).
5670 17302896 No differences in basal or stimulated production of interleukin (IL)-4, IL-10, IL-13 or interferon (IFN)-gamma by CD3+ DR+ enriched cells were observed between the different groups of subjects.
5671 17302896 However, among the CD3+ DR+ population, significant expansions appeared to be present in the very small CD30+, CD69+ and CD122+ subpopulations.
5672 17302896 A confirmatory study was then performed using new subjects (ND=26, LS=15), three-colour flow cytometry, unseparated cells and three additional subset markers (CD38, CD134, CD4/CD25).
5673 17303808 Flow cytometry analysis revealed no significant difference in the percentages of CD4(+)CD25(+) regulatory T-cells between saline-treated and AAV-HO-1-treated groups.
5674 17307871 CD4(+)CD25(+)Foxp3(+) regulatory T cells (T regs) are important for preventing autoimmune diabetes and are either thymic-derived (natural) or differentiated in the periphery outside the thymus (induced).
5675 17307871 Here we show that beta-cell peptide-pulsed dendritic cells (DCs) from nonobese diabetic (NOD) mice can effectively induce CD4(+)CD25(+)Foxp3(+) T cells from naïve islet-specific CD4(+)CD25(-) T cells in the presence of TGF-beta1.
5676 17307871 These results indicate a role for DCs in the induction of antigen-specific CD4(+)CD25(+)Foxp3(+) T cells that can inhibit fully developed autoimmunity in a nonlymphopoenic host, providing an important potential strategy for immunotherapy in patients with autoimmune diabetes.
5677 17307871 CD4(+)CD25(+)Foxp3(+) regulatory T cells (T regs) are important for preventing autoimmune diabetes and are either thymic-derived (natural) or differentiated in the periphery outside the thymus (induced).
5678 17307871 Here we show that beta-cell peptide-pulsed dendritic cells (DCs) from nonobese diabetic (NOD) mice can effectively induce CD4(+)CD25(+)Foxp3(+) T cells from naïve islet-specific CD4(+)CD25(-) T cells in the presence of TGF-beta1.
5679 17307871 These results indicate a role for DCs in the induction of antigen-specific CD4(+)CD25(+)Foxp3(+) T cells that can inhibit fully developed autoimmunity in a nonlymphopoenic host, providing an important potential strategy for immunotherapy in patients with autoimmune diabetes.
5680 17307871 CD4(+)CD25(+)Foxp3(+) regulatory T cells (T regs) are important for preventing autoimmune diabetes and are either thymic-derived (natural) or differentiated in the periphery outside the thymus (induced).
5681 17307871 Here we show that beta-cell peptide-pulsed dendritic cells (DCs) from nonobese diabetic (NOD) mice can effectively induce CD4(+)CD25(+)Foxp3(+) T cells from naïve islet-specific CD4(+)CD25(-) T cells in the presence of TGF-beta1.
5682 17307871 These results indicate a role for DCs in the induction of antigen-specific CD4(+)CD25(+)Foxp3(+) T cells that can inhibit fully developed autoimmunity in a nonlymphopoenic host, providing an important potential strategy for immunotherapy in patients with autoimmune diabetes.
5683 17317763 To define the parameters influencing the efficacy of antigen-specific immunotherapy once diabetes is established, plasmid DNA (pDNA) vaccination was used to suppress autoimmune-mediated destruction of syngeneic islet grafts in diabetic NOD recipients. pDNAs encoding a glutamic acid decarboxylase 65 (GAD65)-Ig molecule (pGAD65), interleukin (IL)-4 (pIL4), and IL-10 (pIL10) significantly delayed the onset of recurrent diabetes compared with pGAD65+pIL10-vaccinated recipients.
5684 17317763 Despite differences in efficacy, a similar frequency of GAD65-specific CD4(+) T-cells secreting IL-4, IL-10, or interferon-gamma were detected in mice treated with pGAD65+pIL4+pIL10 and pGAD65+pIL10.
5685 17317763 However, the frequency of FoxP3-expressing CD4(+)CD25(+)CD62L(hi) T-cells was increased in the renal and pancreatic lymph nodes of diabetic recipients vaccinated with pGAD65+pIL4+pIL10.
5686 17317763 These immunoregulatory CD4(+)CD25(+) T-cells (CD4(+)CD25(+) Treg) exhibited enhanced in vivo and in vitro suppressor activity that partially was transforming growth factor-beta dependent.
5687 17317763 Furthermore, duration of islet graft protection in pGAD65+pIL4+pIL10-vaccinated diabetic recipients correlated with the persistence of CD4(+)CD25(+) Treg.
5688 17317763 These data demonstrate that the frequency and maintenance of FoxP3-expressing CD4(+)CD25(+) Treg influence antigen-induced suppression of ongoing beta-cell autoimmunity in diabetic recipients.
5689 17317763 To define the parameters influencing the efficacy of antigen-specific immunotherapy once diabetes is established, plasmid DNA (pDNA) vaccination was used to suppress autoimmune-mediated destruction of syngeneic islet grafts in diabetic NOD recipients. pDNAs encoding a glutamic acid decarboxylase 65 (GAD65)-Ig molecule (pGAD65), interleukin (IL)-4 (pIL4), and IL-10 (pIL10) significantly delayed the onset of recurrent diabetes compared with pGAD65+pIL10-vaccinated recipients.
5690 17317763 Despite differences in efficacy, a similar frequency of GAD65-specific CD4(+) T-cells secreting IL-4, IL-10, or interferon-gamma were detected in mice treated with pGAD65+pIL4+pIL10 and pGAD65+pIL10.
5691 17317763 However, the frequency of FoxP3-expressing CD4(+)CD25(+)CD62L(hi) T-cells was increased in the renal and pancreatic lymph nodes of diabetic recipients vaccinated with pGAD65+pIL4+pIL10.
5692 17317763 These immunoregulatory CD4(+)CD25(+) T-cells (CD4(+)CD25(+) Treg) exhibited enhanced in vivo and in vitro suppressor activity that partially was transforming growth factor-beta dependent.
5693 17317763 Furthermore, duration of islet graft protection in pGAD65+pIL4+pIL10-vaccinated diabetic recipients correlated with the persistence of CD4(+)CD25(+) Treg.
5694 17317763 These data demonstrate that the frequency and maintenance of FoxP3-expressing CD4(+)CD25(+) Treg influence antigen-induced suppression of ongoing beta-cell autoimmunity in diabetic recipients.
5695 17317763 To define the parameters influencing the efficacy of antigen-specific immunotherapy once diabetes is established, plasmid DNA (pDNA) vaccination was used to suppress autoimmune-mediated destruction of syngeneic islet grafts in diabetic NOD recipients. pDNAs encoding a glutamic acid decarboxylase 65 (GAD65)-Ig molecule (pGAD65), interleukin (IL)-4 (pIL4), and IL-10 (pIL10) significantly delayed the onset of recurrent diabetes compared with pGAD65+pIL10-vaccinated recipients.
5696 17317763 Despite differences in efficacy, a similar frequency of GAD65-specific CD4(+) T-cells secreting IL-4, IL-10, or interferon-gamma were detected in mice treated with pGAD65+pIL4+pIL10 and pGAD65+pIL10.
5697 17317763 However, the frequency of FoxP3-expressing CD4(+)CD25(+)CD62L(hi) T-cells was increased in the renal and pancreatic lymph nodes of diabetic recipients vaccinated with pGAD65+pIL4+pIL10.
5698 17317763 These immunoregulatory CD4(+)CD25(+) T-cells (CD4(+)CD25(+) Treg) exhibited enhanced in vivo and in vitro suppressor activity that partially was transforming growth factor-beta dependent.
5699 17317763 Furthermore, duration of islet graft protection in pGAD65+pIL4+pIL10-vaccinated diabetic recipients correlated with the persistence of CD4(+)CD25(+) Treg.
5700 17317763 These data demonstrate that the frequency and maintenance of FoxP3-expressing CD4(+)CD25(+) Treg influence antigen-induced suppression of ongoing beta-cell autoimmunity in diabetic recipients.
5701 17317763 To define the parameters influencing the efficacy of antigen-specific immunotherapy once diabetes is established, plasmid DNA (pDNA) vaccination was used to suppress autoimmune-mediated destruction of syngeneic islet grafts in diabetic NOD recipients. pDNAs encoding a glutamic acid decarboxylase 65 (GAD65)-Ig molecule (pGAD65), interleukin (IL)-4 (pIL4), and IL-10 (pIL10) significantly delayed the onset of recurrent diabetes compared with pGAD65+pIL10-vaccinated recipients.
5702 17317763 Despite differences in efficacy, a similar frequency of GAD65-specific CD4(+) T-cells secreting IL-4, IL-10, or interferon-gamma were detected in mice treated with pGAD65+pIL4+pIL10 and pGAD65+pIL10.
5703 17317763 However, the frequency of FoxP3-expressing CD4(+)CD25(+)CD62L(hi) T-cells was increased in the renal and pancreatic lymph nodes of diabetic recipients vaccinated with pGAD65+pIL4+pIL10.
5704 17317763 These immunoregulatory CD4(+)CD25(+) T-cells (CD4(+)CD25(+) Treg) exhibited enhanced in vivo and in vitro suppressor activity that partially was transforming growth factor-beta dependent.
5705 17317763 Furthermore, duration of islet graft protection in pGAD65+pIL4+pIL10-vaccinated diabetic recipients correlated with the persistence of CD4(+)CD25(+) Treg.
5706 17317763 These data demonstrate that the frequency and maintenance of FoxP3-expressing CD4(+)CD25(+) Treg influence antigen-induced suppression of ongoing beta-cell autoimmunity in diabetic recipients.
5707 17317763 To define the parameters influencing the efficacy of antigen-specific immunotherapy once diabetes is established, plasmid DNA (pDNA) vaccination was used to suppress autoimmune-mediated destruction of syngeneic islet grafts in diabetic NOD recipients. pDNAs encoding a glutamic acid decarboxylase 65 (GAD65)-Ig molecule (pGAD65), interleukin (IL)-4 (pIL4), and IL-10 (pIL10) significantly delayed the onset of recurrent diabetes compared with pGAD65+pIL10-vaccinated recipients.
5708 17317763 Despite differences in efficacy, a similar frequency of GAD65-specific CD4(+) T-cells secreting IL-4, IL-10, or interferon-gamma were detected in mice treated with pGAD65+pIL4+pIL10 and pGAD65+pIL10.
5709 17317763 However, the frequency of FoxP3-expressing CD4(+)CD25(+)CD62L(hi) T-cells was increased in the renal and pancreatic lymph nodes of diabetic recipients vaccinated with pGAD65+pIL4+pIL10.
5710 17317763 These immunoregulatory CD4(+)CD25(+) T-cells (CD4(+)CD25(+) Treg) exhibited enhanced in vivo and in vitro suppressor activity that partially was transforming growth factor-beta dependent.
5711 17317763 Furthermore, duration of islet graft protection in pGAD65+pIL4+pIL10-vaccinated diabetic recipients correlated with the persistence of CD4(+)CD25(+) Treg.
5712 17317763 These data demonstrate that the frequency and maintenance of FoxP3-expressing CD4(+)CD25(+) Treg influence antigen-induced suppression of ongoing beta-cell autoimmunity in diabetic recipients.
5713 17324464 Activation induced cell death (AICD) via Fas/FasL is the primary homeostatic molecular mechanism employed by the immune system to control activated T-cell responses and promote tolerance to self-antigens.
5714 17324464 We herein investigated the ability of a novel multimeric form of FasL chimeric with streptavidin (SA-FasL) having potent apoptotic activity to induce apoptosis in diabetogenic T cells and modulate insulin-dependent type 1 diabetes (IDDM) in an adoptive transfer model.
5715 17324464 This effect was associated with an increase in CD4(+)CD25(+) T cells and correlated with FoxP3 expression in pancreatic lymph nodes.
5716 17327427 Previous characterizations of Tregs in type 1 diabetes have used antibodies against CD4 and alpha-chain of the interleukin-2 receptor complex (CD25).
5717 17327427 With inclusion of this marker, two predominant populations of CD4(+)CD25(+) T-cells were identified: CD4(+)CD25(+)FOXP3(+) as well as CD4(+)FOXP3(-) T-cells expressing low levels of CD25 (CD4(+)CD25(LOW)FOXP3(-)).
5718 17327427 In all study groups, the frequency of CD4(+)CD25(+)FOXP3(+) cells was age independent, whereas CD4(+)CD25(LOW)FOXP3(-) cell frequencies strongly associated with age.
5719 17327427 In terms of additional markers for delineating cells of Treg lineage, FOXP3(+) cells were CD127(-) to CD127(LOW) whereas CD25(+) cells were less restricted in their expression of this marker, with CD127 expressed across a continuum of levels.
5720 17327427 Importantly, no differences were observed in the frequency of CD4(+)CD25(+)FOXP3(+) T-cells in individuals with or at varying degrees of risk for type 1 diabetes.
5721 17327427 Previous characterizations of Tregs in type 1 diabetes have used antibodies against CD4 and alpha-chain of the interleukin-2 receptor complex (CD25).
5722 17327427 With inclusion of this marker, two predominant populations of CD4(+)CD25(+) T-cells were identified: CD4(+)CD25(+)FOXP3(+) as well as CD4(+)FOXP3(-) T-cells expressing low levels of CD25 (CD4(+)CD25(LOW)FOXP3(-)).
5723 17327427 In all study groups, the frequency of CD4(+)CD25(+)FOXP3(+) cells was age independent, whereas CD4(+)CD25(LOW)FOXP3(-) cell frequencies strongly associated with age.
5724 17327427 In terms of additional markers for delineating cells of Treg lineage, FOXP3(+) cells were CD127(-) to CD127(LOW) whereas CD25(+) cells were less restricted in their expression of this marker, with CD127 expressed across a continuum of levels.
5725 17327427 Importantly, no differences were observed in the frequency of CD4(+)CD25(+)FOXP3(+) T-cells in individuals with or at varying degrees of risk for type 1 diabetes.
5726 17327427 Previous characterizations of Tregs in type 1 diabetes have used antibodies against CD4 and alpha-chain of the interleukin-2 receptor complex (CD25).
5727 17327427 With inclusion of this marker, two predominant populations of CD4(+)CD25(+) T-cells were identified: CD4(+)CD25(+)FOXP3(+) as well as CD4(+)FOXP3(-) T-cells expressing low levels of CD25 (CD4(+)CD25(LOW)FOXP3(-)).
5728 17327427 In all study groups, the frequency of CD4(+)CD25(+)FOXP3(+) cells was age independent, whereas CD4(+)CD25(LOW)FOXP3(-) cell frequencies strongly associated with age.
5729 17327427 In terms of additional markers for delineating cells of Treg lineage, FOXP3(+) cells were CD127(-) to CD127(LOW) whereas CD25(+) cells were less restricted in their expression of this marker, with CD127 expressed across a continuum of levels.
5730 17327427 Importantly, no differences were observed in the frequency of CD4(+)CD25(+)FOXP3(+) T-cells in individuals with or at varying degrees of risk for type 1 diabetes.
5731 17327427 Previous characterizations of Tregs in type 1 diabetes have used antibodies against CD4 and alpha-chain of the interleukin-2 receptor complex (CD25).
5732 17327427 With inclusion of this marker, two predominant populations of CD4(+)CD25(+) T-cells were identified: CD4(+)CD25(+)FOXP3(+) as well as CD4(+)FOXP3(-) T-cells expressing low levels of CD25 (CD4(+)CD25(LOW)FOXP3(-)).
5733 17327427 In all study groups, the frequency of CD4(+)CD25(+)FOXP3(+) cells was age independent, whereas CD4(+)CD25(LOW)FOXP3(-) cell frequencies strongly associated with age.
5734 17327427 In terms of additional markers for delineating cells of Treg lineage, FOXP3(+) cells were CD127(-) to CD127(LOW) whereas CD25(+) cells were less restricted in their expression of this marker, with CD127 expressed across a continuum of levels.
5735 17327427 Importantly, no differences were observed in the frequency of CD4(+)CD25(+)FOXP3(+) T-cells in individuals with or at varying degrees of risk for type 1 diabetes.
5736 17327428 Although CD4+ T-cell assays have met with limited success, CD8+ T-cells are increasingly recognized as key actors in the diabetes of the NOD mouse.
5737 17327428 Taking advantage of a panel of HLA-A2-restricted beta-cell epitopes derived from preproinsulin, GAD, and islet glucose-6-phosphatase catalytic subunit-related protein (IGRP), we have implemented an islet-specific CD8+ T-cell interferon-gamma enzyme-linked immunospot (ISL8Spot) assay.
5738 17336387 In the NOD mouse, some previous studies argued in favor of a regulatory role for GAD-specific CD4+ T cells, and no diabetogenic CD8+ T cells specific for GAD have been identified so far, discrediting the importance of GAD in beta-cell injury.
5739 17336387 Here, we identified, in the NOD model, a relevant GAD CD8+ T cell epitope (GAD(90-98)) using immunization with a plasmid encoding GAD, a protocol relying on in vivo processing of peptides from the autoantigenic protein.
5740 17336387 In pancreatic lymph nodes of naïve female NOD mice, CD8+ T lymphocytes recognizing GAD(90-98) peptide were detected during the initial phase of invasive insulitis (between 4 and 8 weeks of age), suggesting an important role for these cells in the first stage of the disease.
5741 17336387 GAD(90-98) specific CD8+ lymphocytes lysed efficiently islet cells in vitro and transferred diabetes into NOD(SCID) mice (100%).
5742 17346153 The Janus face of CD4+CD25+ regulatory T cells in cancer and autoimmunity.
5743 17346189 Multiple apoptotic pathways play a role in destructive insulitis, including perforin/granzyme, Fas/Fas-ligand (FasL), and other members of the necrosis factor superfamily.
5744 17346189 There may be a preferential use of perforin/granzyme in CD8(+) T cell-mediated lysis, which participates in onset of autoimmunity, and a predominance of FasL in CD4(+) T cell-mediated insulitis.
5745 17346189 Several cytokines released in the inflammatory infiltrate induce Fas expression in beta cells, priming them to FasL-mediated apoptosis.
5746 17349009 In the context of a T cell-mediated autoimmune disease such as type 1 diabetes, CD4 and CD8 T cell recognition of islet autoantigenic epitopes is a key step in the autoimmune cascade.
5747 17349009 Targets of both CD4 and CD8 T cells are listed for human type 1 diabetes, for humanized [human leucocyte antigen (HLA)-transgenic] mouse models, and for the major spontaneous disease model, the non-obese diabetic (NOD) mouse.
5748 17349009 In the context of a T cell-mediated autoimmune disease such as type 1 diabetes, CD4 and CD8 T cell recognition of islet autoantigenic epitopes is a key step in the autoimmune cascade.
5749 17349009 Targets of both CD4 and CD8 T cells are listed for human type 1 diabetes, for humanized [human leucocyte antigen (HLA)-transgenic] mouse models, and for the major spontaneous disease model, the non-obese diabetic (NOD) mouse.
5750 17371968 Peroxisome proliferator-activated receptor (PPAR)gamma is a nuclear hormone receptor primarily characterized for its effect on insulin metabolism.
5751 17371968 However, the relationship between PPARgamma ligands and CD4+CD25+ regulatory T cells (Tregs) has not been examined.
5752 17372610 Here, we develop a model where IL-2 deficiency precipitates a breakdown of self-tolerance and progression to diabetes, and its action upon diabetogenic islet-specific CD4 T cells can be tracked.
5753 17372610 We find that IL-2 is not required for Aire-dependent thymic clonal deletion of high-avidity diabetogenic clones, but is essential for thymic formation of islet-specific Foxp3-expressing CD4 T cells.
5754 17372610 The absence of IL-2 results in the expansion of low-avidity Foxp3(-) islet-reactive CD4 T cells.
5755 17372610 Here, we develop a model where IL-2 deficiency precipitates a breakdown of self-tolerance and progression to diabetes, and its action upon diabetogenic islet-specific CD4 T cells can be tracked.
5756 17372610 We find that IL-2 is not required for Aire-dependent thymic clonal deletion of high-avidity diabetogenic clones, but is essential for thymic formation of islet-specific Foxp3-expressing CD4 T cells.
5757 17372610 The absence of IL-2 results in the expansion of low-avidity Foxp3(-) islet-reactive CD4 T cells.
5758 17372610 Here, we develop a model where IL-2 deficiency precipitates a breakdown of self-tolerance and progression to diabetes, and its action upon diabetogenic islet-specific CD4 T cells can be tracked.
5759 17372610 We find that IL-2 is not required for Aire-dependent thymic clonal deletion of high-avidity diabetogenic clones, but is essential for thymic formation of islet-specific Foxp3-expressing CD4 T cells.
5760 17372610 The absence of IL-2 results in the expansion of low-avidity Foxp3(-) islet-reactive CD4 T cells.
5761 17374136 The CXCR4/CXCL12 (SDF-1) signalling pathway protects non-obese diabetic mouse from autoimmune diabetes.
5762 17374136 The chemokine stromal cell-derived factor-1 CXCL-12 (SDF-1) and its ligand the CXCR4 chemokine receptor are important regulatory elements.
5763 17374136 CXCR4 is expressed on the surface of CD4(+) T cells, dendritic cells and B lymphocytes.
5764 17374136 This effect was associated with an increase of interferon (IFN)-gamma mRNA and a reduction of interleukin (IL)-4 mRNA levels both in PLNs and isolated islets.
5765 17374136 AMD3100 also reduced IL-4 and IL-10 production of plate-bound anti-CD3 and anti-CD28-stimulated splenocytes.
5766 17374136 Immunofluorescence studies indicated that AMD3100 reduced the number of CXCR4(+) and SDF-1 positive cells in the inflamed islets.
5767 17374136 We can conclude that the CXCL-12/CXCR4 pathway has protective effects against autoimmune diabetes.
5768 17389382 Previous results have shown that CD4(+)CD25(+) regulatory T cells (Tregs) control autoimmunity in a spontaneous model of type 1 diabetes, the nonobese diabetic (NOD) mouse.
5769 17389382 This finding contrasts with a large body of work suggesting that CD4(+)CD25(high) Tregs act in a cytokine-independent manner, thus suggesting that another type of Treg is operational in this setting.
5770 17389382 Our present results show that a subset of foxP3(+) cells present within a CD4(+)CD25(low) lymphocyte subset suppresses T cell immunity in spontaneously diabetic NOD mice in a TGF-beta-dependent manner, a functional property typical of "adaptive" regulatory T cells.
5771 17389382 Importantly, in two distinct in vivo models, these TGF-beta-dependent adaptive CD4(+)CD25(low) T cells can be induced from peripheral CD4(+)CD25(-) T lymphocytes by anti-CD3 immunotherapy which correlates with the restoration of self-tolerance.
5772 17389382 Previous results have shown that CD4(+)CD25(+) regulatory T cells (Tregs) control autoimmunity in a spontaneous model of type 1 diabetes, the nonobese diabetic (NOD) mouse.
5773 17389382 This finding contrasts with a large body of work suggesting that CD4(+)CD25(high) Tregs act in a cytokine-independent manner, thus suggesting that another type of Treg is operational in this setting.
5774 17389382 Our present results show that a subset of foxP3(+) cells present within a CD4(+)CD25(low) lymphocyte subset suppresses T cell immunity in spontaneously diabetic NOD mice in a TGF-beta-dependent manner, a functional property typical of "adaptive" regulatory T cells.
5775 17389382 Importantly, in two distinct in vivo models, these TGF-beta-dependent adaptive CD4(+)CD25(low) T cells can be induced from peripheral CD4(+)CD25(-) T lymphocytes by anti-CD3 immunotherapy which correlates with the restoration of self-tolerance.
5776 17389382 Previous results have shown that CD4(+)CD25(+) regulatory T cells (Tregs) control autoimmunity in a spontaneous model of type 1 diabetes, the nonobese diabetic (NOD) mouse.
5777 17389382 This finding contrasts with a large body of work suggesting that CD4(+)CD25(high) Tregs act in a cytokine-independent manner, thus suggesting that another type of Treg is operational in this setting.
5778 17389382 Our present results show that a subset of foxP3(+) cells present within a CD4(+)CD25(low) lymphocyte subset suppresses T cell immunity in spontaneously diabetic NOD mice in a TGF-beta-dependent manner, a functional property typical of "adaptive" regulatory T cells.
5779 17389382 Importantly, in two distinct in vivo models, these TGF-beta-dependent adaptive CD4(+)CD25(low) T cells can be induced from peripheral CD4(+)CD25(-) T lymphocytes by anti-CD3 immunotherapy which correlates with the restoration of self-tolerance.
5780 17389382 Previous results have shown that CD4(+)CD25(+) regulatory T cells (Tregs) control autoimmunity in a spontaneous model of type 1 diabetes, the nonobese diabetic (NOD) mouse.
5781 17389382 This finding contrasts with a large body of work suggesting that CD4(+)CD25(high) Tregs act in a cytokine-independent manner, thus suggesting that another type of Treg is operational in this setting.
5782 17389382 Our present results show that a subset of foxP3(+) cells present within a CD4(+)CD25(low) lymphocyte subset suppresses T cell immunity in spontaneously diabetic NOD mice in a TGF-beta-dependent manner, a functional property typical of "adaptive" regulatory T cells.
5783 17389382 Importantly, in two distinct in vivo models, these TGF-beta-dependent adaptive CD4(+)CD25(low) T cells can be induced from peripheral CD4(+)CD25(-) T lymphocytes by anti-CD3 immunotherapy which correlates with the restoration of self-tolerance.
5784 17390713 Increase of specific TCR Vbeta repertoires was often observed in patients with positive anti-glutamic acid decarboxylase antibody, and this tendency was more evident among CD8+ T cells than in CD4+ T cells.
5785 17407193 A role for the activating NK-receptor NKG2D has been indicated in several autoimmune diseases in humans and in animal models of type 1 diabetes and multiple sclerosis, and treatment with monoclonal antibodies to NKG2D attenuated disease severity in these models.
5786 17407193 In an adoptive transfer-induced model of colitis, we found a significantly higher frequency of CD4(+)NKG2D(+) cells in blood, mesenteric lymph nodes, colon, and spleen from colitic mice compared to BALB/c donor-mice.
5787 17407193 We conclude that the frequency of CD4(+)NKG2D(+) cells increase during development of experimental colitis.
5788 17407193 A role for the activating NK-receptor NKG2D has been indicated in several autoimmune diseases in humans and in animal models of type 1 diabetes and multiple sclerosis, and treatment with monoclonal antibodies to NKG2D attenuated disease severity in these models.
5789 17407193 In an adoptive transfer-induced model of colitis, we found a significantly higher frequency of CD4(+)NKG2D(+) cells in blood, mesenteric lymph nodes, colon, and spleen from colitic mice compared to BALB/c donor-mice.
5790 17407193 We conclude that the frequency of CD4(+)NKG2D(+) cells increase during development of experimental colitis.
5791 17412560 Converting antigen-specific diabetogenic CD4 and CD8 T cells to TGF-beta producing non-pathogenic regulatory cells following FoxP3 transduction.
5792 17412560 Regulatory activity was not limited to CD4 T cells as potent diabetogenic CD8 T cells specific for insulin, were also reduced in pathogenicity by FoxP3 induction.
5793 17412560 The disease suppressive effect, in both CD4 and CD8 cells, was more evident in spontaneously diabetes-prone NOD hosts (non-lymphopenic) than in lymphopenic NOD.scid hosts.
5794 17412560 Converting antigen-specific diabetogenic CD4 and CD8 T cells to TGF-beta producing non-pathogenic regulatory cells following FoxP3 transduction.
5795 17412560 Regulatory activity was not limited to CD4 T cells as potent diabetogenic CD8 T cells specific for insulin, were also reduced in pathogenicity by FoxP3 induction.
5796 17412560 The disease suppressive effect, in both CD4 and CD8 cells, was more evident in spontaneously diabetes-prone NOD hosts (non-lymphopenic) than in lymphopenic NOD.scid hosts.
5797 17412560 Converting antigen-specific diabetogenic CD4 and CD8 T cells to TGF-beta producing non-pathogenic regulatory cells following FoxP3 transduction.
5798 17412560 Regulatory activity was not limited to CD4 T cells as potent diabetogenic CD8 T cells specific for insulin, were also reduced in pathogenicity by FoxP3 induction.
5799 17412560 The disease suppressive effect, in both CD4 and CD8 cells, was more evident in spontaneously diabetes-prone NOD hosts (non-lymphopenic) than in lymphopenic NOD.scid hosts.
5800 17428252 Diabetes in non-obese diabetic mice is not associated with quantitative changes in CD4+ CD25+ Foxp3+ regulatory T cells.
5801 17428252 Although we show here that CD25+ cells delay diabetes onset in non-obese diabetic (NOD) mice, we found, in contrast to previous reports, neither an age-related decline nor a decline following onset of diabetes in the frequency of CD4+ CD25+ Foxp3+ regulatory T cells.
5802 17428252 Diabetes in non-obese diabetic mice is not associated with quantitative changes in CD4+ CD25+ Foxp3+ regulatory T cells.
5803 17428252 Although we show here that CD25+ cells delay diabetes onset in non-obese diabetic (NOD) mice, we found, in contrast to previous reports, neither an age-related decline nor a decline following onset of diabetes in the frequency of CD4+ CD25+ Foxp3+ regulatory T cells.
5804 17430175 The vasoactive intestinal peptide (VIP) and pituitary adenylate cyclase-activating polypeptide (PACAP) are two neuropeptides belonging to the VIP/secretin/glucagon family of peptides.
5805 17430175 In addition, VIP/PACAP reduce the expression of costimulatory molecules (particularly CD80 and CD86) on the antigen-presenting cells, and therefore reduce stimulation of antigen-specific CD4(+) T cells.
5806 17437531 An early age-related increase in the frequency of CD4+ Foxp3+ cells in BDC2.5NOD mice.
5807 17438291 A replicate linkage confirmed these positions and showed that the same region also controls clonal deviation toward the CD4(+)FoxP3(+) regulatory T cell lineage.
5808 17446653 An elderly patient with sarcoidosis manifesting panhypopituitarism with central diabetes insipidus.
5809 17446653 The presence of bilateral hilar lymphadenopathy and increased CD4/CD8 ratio in bronchoalveolar lavage fluid was diagnostic for lung sarcoidosis.
5810 17456848 Oral anti-CD3 mAb increased the expression of LAP on CD4(+) T-cells, and these cells could adoptively transfer protection.
5811 17475829 Several naturally occurring anti-insulin CD4 T cells were isolated from islet infiltrates of NOD mice.
5812 17475849 We examine the consequence of Ab-mediated uptake of self Ag by dendritic cells in the rat insulin promoter-membrane OVA model and identify a role for the inhibitory FcgammaRIIB in the maintenance of peripheral CD8 T cell tolerance.
5813 17475849 Effector differentiation of diabetogenic OT-I CD8+ T cells is enhanced in rat insulin promoter-membrane OVA mice lacking FcgammaRIIB, resulting in a high incidence of diabetes.
5814 17475849 In these MHC II-restricted responses, the presence of FcgammaRIIB only modestly affected initial CD4 T cell proliferative responses, suggesting that FcgammaRIIB limited effector cell differentiation primarily by inhibiting DC activation.
5815 17483582 Can we talk about CD4+CD28- lymphocytes as a risk factor for ischemic stroke?
5816 17485666 After immunizations, all animals developed an HCV-specific immune response including IFN-gamma(+), IL-2(+), CD4(+), and CD8(+) T cell and proliferative lymphocyte responses against core, E1, and E2.
5817 17487333 Over the past years, evidence has been gathered to suggest that the dysfunction of CD4(+)CD25(+) regulatory T (Treg) cells, and the interleukin-10 (IL10) -secreting type 1 regulatory T (Tr1) cells are associated with disease onset in diabetic patients.
5818 17487333 Although CD4(+)CD25(+) Treg cells develop as a distinct lineage of T cells in the thymus, results from recent studies have shown that they can also arise independently from the peripheral pool of conventional CD4(+) lymphocytes.
5819 17487333 These observations have led to the development of various methods to convert peripheral CD4(+) T cells into CD4(+)CD25(+) Treg and Tr1 cells in vitro or to induce the development and expansion of Treg cell subsets in vivo.
5820 17487333 Over the past years, evidence has been gathered to suggest that the dysfunction of CD4(+)CD25(+) regulatory T (Treg) cells, and the interleukin-10 (IL10) -secreting type 1 regulatory T (Tr1) cells are associated with disease onset in diabetic patients.
5821 17487333 Although CD4(+)CD25(+) Treg cells develop as a distinct lineage of T cells in the thymus, results from recent studies have shown that they can also arise independently from the peripheral pool of conventional CD4(+) lymphocytes.
5822 17487333 These observations have led to the development of various methods to convert peripheral CD4(+) T cells into CD4(+)CD25(+) Treg and Tr1 cells in vitro or to induce the development and expansion of Treg cell subsets in vivo.
5823 17487333 Over the past years, evidence has been gathered to suggest that the dysfunction of CD4(+)CD25(+) regulatory T (Treg) cells, and the interleukin-10 (IL10) -secreting type 1 regulatory T (Tr1) cells are associated with disease onset in diabetic patients.
5824 17487333 Although CD4(+)CD25(+) Treg cells develop as a distinct lineage of T cells in the thymus, results from recent studies have shown that they can also arise independently from the peripheral pool of conventional CD4(+) lymphocytes.
5825 17487333 These observations have led to the development of various methods to convert peripheral CD4(+) T cells into CD4(+)CD25(+) Treg and Tr1 cells in vitro or to induce the development and expansion of Treg cell subsets in vivo.
5826 17491665 CD4+ CD25+ regulatory T cells were also a focus of interest.
5827 17491665 Talks that I will discuss focused on the role of molecules such as GITR, Foxp3 and B7 for the development and function of regulatory T cells and the importance of these molecules in the prevention of autoimmunity.
5828 17491665 As well, a novel form of CTLA-4 and the use of 4-1BB co-stimulation blockade for the control of autoimmunity will be discussed.
5829 17491676 CD4(+)CD25(+) T cells or type 1 regulatory T cells) is currently becoming more widespread.
5830 17491689 Rosiglitazone is an insulin-sensitizing drug that is a ligand for the nuclear receptor peroxisome proliferator-activated receptor-gamma (PPAR-gamma).
5831 17491689 Blood glucose level (BGL), serum insulin level and pancreatic levels of tumor necrosis factor-alpha (TNF-alpha), interferon-gamma (IFN-gamma) and NO were measured.
5832 17491689 Histopathological examination and immunohistochemical determination of CD4 and CD8 T lymphocytes in the pancreatic islets were performed.
5833 17491689 The results showed that rosiglitazone treatment resulted in a significant decrease in the BGL and the pancreatic levels of TNF-alpha, IFN-gamma and NO compared to diabetic mice.
5834 17491689 The destroyed pancreatic islets were regenerated and became free from both CD4 and CD8 T cells after treatment.
5835 17491689 Rosiglitazone is an insulin-sensitizing drug that is a ligand for the nuclear receptor peroxisome proliferator-activated receptor-gamma (PPAR-gamma).
5836 17491689 Blood glucose level (BGL), serum insulin level and pancreatic levels of tumor necrosis factor-alpha (TNF-alpha), interferon-gamma (IFN-gamma) and NO were measured.
5837 17491689 Histopathological examination and immunohistochemical determination of CD4 and CD8 T lymphocytes in the pancreatic islets were performed.
5838 17491689 The results showed that rosiglitazone treatment resulted in a significant decrease in the BGL and the pancreatic levels of TNF-alpha, IFN-gamma and NO compared to diabetic mice.
5839 17491689 The destroyed pancreatic islets were regenerated and became free from both CD4 and CD8 T cells after treatment.
5840 17507865 [The significance of regulatory CD4+CD25+ T cells in the pathogenesis and treatment of kidney disease].
5841 17507865 This paper presents the latest knowledge concerning the occurrence of natural regulatory T cells of CD4+CD25+ phenotype and their role in the pathogeneses of immune system diseases.
5842 17507865 [The significance of regulatory CD4+CD25+ T cells in the pathogenesis and treatment of kidney disease].
5843 17507865 This paper presents the latest knowledge concerning the occurrence of natural regulatory T cells of CD4+CD25+ phenotype and their role in the pathogeneses of immune system diseases.
5844 17513748 In this study, we report that the cytopiloyne from B. pilosa, which is structurally different from the above-mentioned polyacetylenes and inhibits CD4(+) T cell proliferation, effectively prevents the development of diabetes in nonobese diabetic mice as evidenced by a normal level of blood glucose and insulin and normal pancreatic islet architecture.
5845 17513748 Coculture assays imply that this decrease in CD4(+) T cells involves the Fas ligand/Fas pathway.
5846 17513748 In this study, we report that the cytopiloyne from B. pilosa, which is structurally different from the above-mentioned polyacetylenes and inhibits CD4(+) T cell proliferation, effectively prevents the development of diabetes in nonobese diabetic mice as evidenced by a normal level of blood glucose and insulin and normal pancreatic islet architecture.
5847 17513748 Coculture assays imply that this decrease in CD4(+) T cells involves the Fas ligand/Fas pathway.
5848 17513752 The TCR repertoires of Tconv and Treg cells were equally broad, were distinct, yet overlapped significantly, representing a less strict partition than previously seen between CD4 and CD8 T cells.
5849 17517665 This effect was associated with a recruitment of Foxp3(+) CD4 T cells around islets.
5850 17534268 Foxp3-transduced CD4(+)T-cells have been used for treating autoimmune diseases such as type I diabetes.
5851 17534268 We designed and tested a new strategy that involves converting pathogenic CD4(+)Th1 cells into regulatory T-cells by lentiviral transduction with Foxp3 under the control of interferon-gamma (IFN-gamma) promoter (IgammaP-Foxp3).
5852 17534268 Foxp3-transduced CD4(+)T-cells have been used for treating autoimmune diseases such as type I diabetes.
5853 17534268 We designed and tested a new strategy that involves converting pathogenic CD4(+)Th1 cells into regulatory T-cells by lentiviral transduction with Foxp3 under the control of interferon-gamma (IFN-gamma) promoter (IgammaP-Foxp3).
5854 17546295 Effects on CD4+ and CD8+ lymphocytes.
5855 17565417 Islet antigens are presented by human leukocyte antigen (HLA) class I and II molecules and are recognized by CD8(+) and CD4(+) autoreactive T cells in type 1 diabetic individuals.
5856 17568845 No significant changes were observed in the serum levels of creatine phosphokinase, hepatic enzymes, CD4+, CD8+ and viral load.
5857 17590177 The non-obese diabetic (NOD) mouse develops insulin-dependent diabetes mellitus (IDDM) spontaneously as a consequence of an autoimmune process that leads to destruction of the insulin-producing beta cells of the pancreas.
5858 17590177 IDDM is characterized by increased T helper 1 (Th1) cell responses toward several autoantigens, including Hsp60, glutamic acid decarboxylase and insulin.
5859 17590177 This change included reduction of CD4(+) and CD8(+) T cells infiltration, appearance of CD25(+) cells influx and an increased staining for interleukin (IL)-10 in the islets.
5860 17607359 Additionally, CD4(+) T cells from B16:A-dKO mice immunized with native insulin B:9-23 peptide promoted IAAs in NOD/SCID mice.
5861 17615584 The diabetogenic, insulin-specific CD8 T cell response primed in the experimental autoimmune diabetes model in RIP-B7.1 mice.
5862 17615584 EAD induction critically depends on CD8 T cells and is independent of CD4 T cells.
5863 17615584 To be diabetogenic, ppins-specific CD8 T cells had to express IFN-gamma.
5864 17615584 Neither expression of perforin nor signaling through the type I IFN receptor is an essential component of this pathogenic CD8 T cell phenotype.
5865 17615584 Diabetogenic CD8 T cells specifically recognize the Kb-restricted A12-21 epitope of the insulin A-chain.
5866 17627890 The PD-1-PDL1 pathway plays a critical role in regulating autoimmune diabetes as blockade or deficiency of PD-1 or PDL1 results in accelerated disease in NOD mice.
5867 17627890 Administration of blocking anti-PDL1 antibody to CD4+ T cell-deficient, CD8+ T cell-deficient and B cell-deficient mice demonstrated that PDL1-mediated regulation of autoreactive CD4+ and CD8+ T cells is critical for diabetes development.
5868 17627890 This concept was confirmed by adoptive transfer studies utilizing lymphocytes from BDC2.5 and 4.1 (CD4+) TCR transgenic mice and 8.3 (CD8+) TCR transgenic mice; efforts showing increased proliferation of both CD4+ and CD8+ T cells following PDL1 blockade in vivo.
5869 17627890 These data provide strong evidence that PDL1 regulates autoimmune diabetes by limiting the expansion of CD4+ and CD8+ autoreactive T cells, and define the timing and locale of PDL1-mediated regulation of type 1 diabetes.
5870 17627890 The PD-1-PDL1 pathway plays a critical role in regulating autoimmune diabetes as blockade or deficiency of PD-1 or PDL1 results in accelerated disease in NOD mice.
5871 17627890 Administration of blocking anti-PDL1 antibody to CD4+ T cell-deficient, CD8+ T cell-deficient and B cell-deficient mice demonstrated that PDL1-mediated regulation of autoreactive CD4+ and CD8+ T cells is critical for diabetes development.
5872 17627890 This concept was confirmed by adoptive transfer studies utilizing lymphocytes from BDC2.5 and 4.1 (CD4+) TCR transgenic mice and 8.3 (CD8+) TCR transgenic mice; efforts showing increased proliferation of both CD4+ and CD8+ T cells following PDL1 blockade in vivo.
5873 17627890 These data provide strong evidence that PDL1 regulates autoimmune diabetes by limiting the expansion of CD4+ and CD8+ autoreactive T cells, and define the timing and locale of PDL1-mediated regulation of type 1 diabetes.
5874 17627890 The PD-1-PDL1 pathway plays a critical role in regulating autoimmune diabetes as blockade or deficiency of PD-1 or PDL1 results in accelerated disease in NOD mice.
5875 17627890 Administration of blocking anti-PDL1 antibody to CD4+ T cell-deficient, CD8+ T cell-deficient and B cell-deficient mice demonstrated that PDL1-mediated regulation of autoreactive CD4+ and CD8+ T cells is critical for diabetes development.
5876 17627890 This concept was confirmed by adoptive transfer studies utilizing lymphocytes from BDC2.5 and 4.1 (CD4+) TCR transgenic mice and 8.3 (CD8+) TCR transgenic mice; efforts showing increased proliferation of both CD4+ and CD8+ T cells following PDL1 blockade in vivo.
5877 17627890 These data provide strong evidence that PDL1 regulates autoimmune diabetes by limiting the expansion of CD4+ and CD8+ autoreactive T cells, and define the timing and locale of PDL1-mediated regulation of type 1 diabetes.
5878 17675466 Insulin peptide B:9-23 is a major autoantigen in type 1 diabetes that contains two distinct CD4 epitopes (B:9-16 and B:13-23).
5879 17675466 In this study, we report that the elimination of the CTL epitope from the B:9-23 peptide by amino acid substitution (with alanine) at positions B:16 and 19 (A16,19 altered peptide ligand) or truncation of the C-terminal amino acids from the peptide (B:9-21), neither of which stimulated the proliferation of insulin B:15-23 reactive CD8 T cells, provided significant intranasally induced suppression of diabetes when coadministered with a potent mucosal adjuvant cholera toxin (CT).
5880 17707941 Studies indicate that both CD4(+) and CD8(+) T lymphocytes and their cytokines play a critical role in different clinical stages of type 1 diabetes (T1D).
5881 17707941 Intracytoplasmic interleukin (IL)-2, IL-10, interferon (IFN)-gamma and tumour necrosis factor (TNF)-alpha levels of isolated CD4(+) and CD8(+) T cells, and neutrophil functions were determined by flow cytometry.
5882 17707941 Intracellular TNF-alpha level of CD4(+) T lymphocytes was significantly decreased in Group 1 compared to Group 2 and healthy subjects.
5883 17707941 In contrast, TNF-alpha in CD8(+) T lymphocytes was higher in Group 1 compared to Group 2.
5884 17707941 Increased TNF-alpha content of CD8(+) T lymphocytes was also obtained in Groups 1 and 2 compared to healthy subjects.
5885 17707941 Increased TNF-alpha secretion of CD8(+) T cells might reflect the role of CD8(+) T cells in beta cell destruction.
5886 17707941 Studies indicate that both CD4(+) and CD8(+) T lymphocytes and their cytokines play a critical role in different clinical stages of type 1 diabetes (T1D).
5887 17707941 Intracytoplasmic interleukin (IL)-2, IL-10, interferon (IFN)-gamma and tumour necrosis factor (TNF)-alpha levels of isolated CD4(+) and CD8(+) T cells, and neutrophil functions were determined by flow cytometry.
5888 17707941 Intracellular TNF-alpha level of CD4(+) T lymphocytes was significantly decreased in Group 1 compared to Group 2 and healthy subjects.
5889 17707941 In contrast, TNF-alpha in CD8(+) T lymphocytes was higher in Group 1 compared to Group 2.
5890 17707941 Increased TNF-alpha content of CD8(+) T lymphocytes was also obtained in Groups 1 and 2 compared to healthy subjects.
5891 17707941 Increased TNF-alpha secretion of CD8(+) T cells might reflect the role of CD8(+) T cells in beta cell destruction.
5892 17707941 Studies indicate that both CD4(+) and CD8(+) T lymphocytes and their cytokines play a critical role in different clinical stages of type 1 diabetes (T1D).
5893 17707941 Intracytoplasmic interleukin (IL)-2, IL-10, interferon (IFN)-gamma and tumour necrosis factor (TNF)-alpha levels of isolated CD4(+) and CD8(+) T cells, and neutrophil functions were determined by flow cytometry.
5894 17707941 Intracellular TNF-alpha level of CD4(+) T lymphocytes was significantly decreased in Group 1 compared to Group 2 and healthy subjects.
5895 17707941 In contrast, TNF-alpha in CD8(+) T lymphocytes was higher in Group 1 compared to Group 2.
5896 17707941 Increased TNF-alpha content of CD8(+) T lymphocytes was also obtained in Groups 1 and 2 compared to healthy subjects.
5897 17707941 Increased TNF-alpha secretion of CD8(+) T cells might reflect the role of CD8(+) T cells in beta cell destruction.
5898 17709886 While some progress has been made towards these goals, additional investigations are needed to address the aforementioned knowledge voids including the role for regulatory T cells (Treg), defined by their co-expression of CD4 and CD25 as well as the transcription factor FOXP3, in the pathogenesis and natural history of type 1 diabetes.
5899 17716860 Our data indicate that NOD derived FTOC produce a smaller percentage of double negative (CD4(-)/CD8(-)) thymocytes expressing TNF receptors compared to non-diabetic C57BL/6 (B6) derived FTOC.
5900 17716860 Neutralization of this endogenous TNF-alpha production in NOD derived FTOC with soluble TNF receptor (sTNF R1) rescued insulin production in our in vitro T1DM model.
5901 17724131 Yet conversion of mature conventional CD4(+) T (T conv) cell lymphocytes can be achieved in several conditions, such as transforming growth factor beta treatment, homeostatic expansion, or chronic exposure to low-dose antigen.
5902 17785799 Granulocyte-macrophage colony-stimulating factor prevents diabetes development in NOD mice by inducing tolerogenic dendritic cells that sustain the suppressive function of CD4+CD25+ regulatory T cells.
5903 17785799 The protection was associated with a marked increase in the number of tolerogenic immature splenic DCs and in the number of Foxp3+CD4+CD25+ regulatory T cells (Tregs).
5904 17785799 Activated DCs from GM-CSF-protected mice expressed lower levels of MHC class II and CD80/CD86 molecules, produced more IL-10 and were less effective in stimulating diabetogenic CD8+ T cells than DCs of PBS-treated NOD mice.
5905 17785799 Depletion of CD11c+ DCs before transfer released diabetogenic T cells from the suppressive effect of CD4+CD25+ Tregs, thereby promoting the development of diabetes.
5906 17785799 These results indicated that semimature DCs were required for the sustained suppressive function of CD4+CD25+ Tregs that were responsible for maintaining tolerance of diabetogenic T cells in NOD mice.
5907 17785799 Granulocyte-macrophage colony-stimulating factor prevents diabetes development in NOD mice by inducing tolerogenic dendritic cells that sustain the suppressive function of CD4+CD25+ regulatory T cells.
5908 17785799 The protection was associated with a marked increase in the number of tolerogenic immature splenic DCs and in the number of Foxp3+CD4+CD25+ regulatory T cells (Tregs).
5909 17785799 Activated DCs from GM-CSF-protected mice expressed lower levels of MHC class II and CD80/CD86 molecules, produced more IL-10 and were less effective in stimulating diabetogenic CD8+ T cells than DCs of PBS-treated NOD mice.
5910 17785799 Depletion of CD11c+ DCs before transfer released diabetogenic T cells from the suppressive effect of CD4+CD25+ Tregs, thereby promoting the development of diabetes.
5911 17785799 These results indicated that semimature DCs were required for the sustained suppressive function of CD4+CD25+ Tregs that were responsible for maintaining tolerance of diabetogenic T cells in NOD mice.
5912 17785799 Granulocyte-macrophage colony-stimulating factor prevents diabetes development in NOD mice by inducing tolerogenic dendritic cells that sustain the suppressive function of CD4+CD25+ regulatory T cells.
5913 17785799 The protection was associated with a marked increase in the number of tolerogenic immature splenic DCs and in the number of Foxp3+CD4+CD25+ regulatory T cells (Tregs).
5914 17785799 Activated DCs from GM-CSF-protected mice expressed lower levels of MHC class II and CD80/CD86 molecules, produced more IL-10 and were less effective in stimulating diabetogenic CD8+ T cells than DCs of PBS-treated NOD mice.
5915 17785799 Depletion of CD11c+ DCs before transfer released diabetogenic T cells from the suppressive effect of CD4+CD25+ Tregs, thereby promoting the development of diabetes.
5916 17785799 These results indicated that semimature DCs were required for the sustained suppressive function of CD4+CD25+ Tregs that were responsible for maintaining tolerance of diabetogenic T cells in NOD mice.
5917 17785799 Granulocyte-macrophage colony-stimulating factor prevents diabetes development in NOD mice by inducing tolerogenic dendritic cells that sustain the suppressive function of CD4+CD25+ regulatory T cells.
5918 17785799 The protection was associated with a marked increase in the number of tolerogenic immature splenic DCs and in the number of Foxp3+CD4+CD25+ regulatory T cells (Tregs).
5919 17785799 Activated DCs from GM-CSF-protected mice expressed lower levels of MHC class II and CD80/CD86 molecules, produced more IL-10 and were less effective in stimulating diabetogenic CD8+ T cells than DCs of PBS-treated NOD mice.
5920 17785799 Depletion of CD11c+ DCs before transfer released diabetogenic T cells from the suppressive effect of CD4+CD25+ Tregs, thereby promoting the development of diabetes.
5921 17785799 These results indicated that semimature DCs were required for the sustained suppressive function of CD4+CD25+ Tregs that were responsible for maintaining tolerance of diabetogenic T cells in NOD mice.
5922 17785827 The Idd6 locus on mouse chromosome 6, which controls the development of type 1 diabetes in the NOD mouse, affects proliferation rates of T cells and the activity of regulatory CD4+CD25+ T cells.
5923 17785827 This phenotype correlates with a diminished proliferation capacity of both CD4+CD25- effector and CD4+CD25+ regulatory T cells upon in vitro stimulation of the TLR1/TLR2 pathway by the ligand palmitoyl-3-cysteine-serine-lysine 4, and with the constitutive down-regulation of Tnf-alpha and IL-6 in macrophages of Idd6- congenic mice.
5924 17785827 The Idd6 locus on mouse chromosome 6, which controls the development of type 1 diabetes in the NOD mouse, affects proliferation rates of T cells and the activity of regulatory CD4+CD25+ T cells.
5925 17785827 This phenotype correlates with a diminished proliferation capacity of both CD4+CD25- effector and CD4+CD25+ regulatory T cells upon in vitro stimulation of the TLR1/TLR2 pathway by the ligand palmitoyl-3-cysteine-serine-lysine 4, and with the constitutive down-regulation of Tnf-alpha and IL-6 in macrophages of Idd6- congenic mice.
5926 17804564 Circulating CD4+CD25 high regulatory T cells and natural killer T cells in children with newly diagnosed type 1 diabetes or with diabetes-associated autoantibodies.
5927 17804564 We used flow cytometry to analyze the proportion of CD4(+)CD25(high) regulatory T cells and natural killer T (NKT) cells in peripheral blood obtained from 25 children with newly diagnosed type 1 diabetes, 21 nondiabetic subjects positive for two or more diabetes-associated autoantibodies, and from 39 autoantibody-negative age- and HLA-matched control subjects.
5928 17804564 CD4(+)CD25(high) T cells were also stained for additional markers HLA-DR, CD69, and CD62L.
5929 17804564 The frequency of CD4(+)CD25(high)HLA-DR(-) T cells was significantly higher in multiple autoantibody-positive children than in controls (P = 0.021).
5930 17804564 We also detected a significantly higher level of CD4(+)CD25(high)HLA-DR(-) and CD4(+)CD25(high)CD69(-) T cells among children expressing three to four autoantibodies when compared to the controls (P = 0.004 and P = 0.048, respectively).
5931 17804564 Circulating CD4+CD25 high regulatory T cells and natural killer T cells in children with newly diagnosed type 1 diabetes or with diabetes-associated autoantibodies.
5932 17804564 We used flow cytometry to analyze the proportion of CD4(+)CD25(high) regulatory T cells and natural killer T (NKT) cells in peripheral blood obtained from 25 children with newly diagnosed type 1 diabetes, 21 nondiabetic subjects positive for two or more diabetes-associated autoantibodies, and from 39 autoantibody-negative age- and HLA-matched control subjects.
5933 17804564 CD4(+)CD25(high) T cells were also stained for additional markers HLA-DR, CD69, and CD62L.
5934 17804564 The frequency of CD4(+)CD25(high)HLA-DR(-) T cells was significantly higher in multiple autoantibody-positive children than in controls (P = 0.021).
5935 17804564 We also detected a significantly higher level of CD4(+)CD25(high)HLA-DR(-) and CD4(+)CD25(high)CD69(-) T cells among children expressing three to four autoantibodies when compared to the controls (P = 0.004 and P = 0.048, respectively).
5936 17804564 Circulating CD4+CD25 high regulatory T cells and natural killer T cells in children with newly diagnosed type 1 diabetes or with diabetes-associated autoantibodies.
5937 17804564 We used flow cytometry to analyze the proportion of CD4(+)CD25(high) regulatory T cells and natural killer T (NKT) cells in peripheral blood obtained from 25 children with newly diagnosed type 1 diabetes, 21 nondiabetic subjects positive for two or more diabetes-associated autoantibodies, and from 39 autoantibody-negative age- and HLA-matched control subjects.
5938 17804564 CD4(+)CD25(high) T cells were also stained for additional markers HLA-DR, CD69, and CD62L.
5939 17804564 The frequency of CD4(+)CD25(high)HLA-DR(-) T cells was significantly higher in multiple autoantibody-positive children than in controls (P = 0.021).
5940 17804564 We also detected a significantly higher level of CD4(+)CD25(high)HLA-DR(-) and CD4(+)CD25(high)CD69(-) T cells among children expressing three to four autoantibodies when compared to the controls (P = 0.004 and P = 0.048, respectively).
5941 17804564 Circulating CD4+CD25 high regulatory T cells and natural killer T cells in children with newly diagnosed type 1 diabetes or with diabetes-associated autoantibodies.
5942 17804564 We used flow cytometry to analyze the proportion of CD4(+)CD25(high) regulatory T cells and natural killer T (NKT) cells in peripheral blood obtained from 25 children with newly diagnosed type 1 diabetes, 21 nondiabetic subjects positive for two or more diabetes-associated autoantibodies, and from 39 autoantibody-negative age- and HLA-matched control subjects.
5943 17804564 CD4(+)CD25(high) T cells were also stained for additional markers HLA-DR, CD69, and CD62L.
5944 17804564 The frequency of CD4(+)CD25(high)HLA-DR(-) T cells was significantly higher in multiple autoantibody-positive children than in controls (P = 0.021).
5945 17804564 We also detected a significantly higher level of CD4(+)CD25(high)HLA-DR(-) and CD4(+)CD25(high)CD69(-) T cells among children expressing three to four autoantibodies when compared to the controls (P = 0.004 and P = 0.048, respectively).
5946 17804564 Circulating CD4+CD25 high regulatory T cells and natural killer T cells in children with newly diagnosed type 1 diabetes or with diabetes-associated autoantibodies.
5947 17804564 We used flow cytometry to analyze the proportion of CD4(+)CD25(high) regulatory T cells and natural killer T (NKT) cells in peripheral blood obtained from 25 children with newly diagnosed type 1 diabetes, 21 nondiabetic subjects positive for two or more diabetes-associated autoantibodies, and from 39 autoantibody-negative age- and HLA-matched control subjects.
5948 17804564 CD4(+)CD25(high) T cells were also stained for additional markers HLA-DR, CD69, and CD62L.
5949 17804564 The frequency of CD4(+)CD25(high)HLA-DR(-) T cells was significantly higher in multiple autoantibody-positive children than in controls (P = 0.021).
5950 17804564 We also detected a significantly higher level of CD4(+)CD25(high)HLA-DR(-) and CD4(+)CD25(high)CD69(-) T cells among children expressing three to four autoantibodies when compared to the controls (P = 0.004 and P = 0.048, respectively).
5951 17823690 Various experimental studies have shown that human DC subsets are involved in the induction of anergy in T cells and in the differentiation of conventional CD4(+) and CD8(+) lymphocytes into the respective subtypes of Treg cells.
5952 17876100 In both cases, macrophages, dendritic cells, CD4+, CD8+, and B cells are present in the diseased islets.
5953 17881563 In this system, DC activation by CD40 engagement indeed extended their ability to present antigen to CD4(+) T cells in vivo, although different results were obtained with antigen delivered to DCs by means of endocytosis from the cell surface.
5954 17891462 Pancreata from female NOD mice at diagnosis and at 1, 2, 3 and 4 weeks thereafter were analysed immunohistochemically for insulin, glucagon and somatostatin cells and glucose transporter-2 (glut2) and correlated with the degree of insulitis and islet immune cell phenotypes.
5955 17891462 During this period, beta cells also declined sharply whereas glucagon and somatostatin cells increased, with occasional islet cells co-expressing insulin and glucagon.
5956 17891462 Glut2 was absent in insulin-containing cells from 1 week onwards.
5957 17891462 CD4 and CD8 T cells and macrophages persisted until 4 weeks, in islets with residual beta cells or extensive insulitis.
5958 17947648 Recruitment and activation of macrophages by pathogenic CD4 T cells in type 1 diabetes: evidence for involvement of CCR8 and CCL1.
5959 17947648 Adoptive transfer of diabetogenic CD4 Th1 T cell clones into young NOD or NOD.scid recipients rapidly induces onset of diabetes and also provides a system for analysis of the pancreatic infiltrate.
5960 17947648 Analysis of infiltrating cells after adoptive transfer by the diabetogenic T cell clone BDC-2.5 indicates that large numbers of cells staining for both F4/80 and CD11b are recruited into the pancreas where they are activated to make IL-1beta, TNF-alpha, and NO, and express the chemokine receptors CCR5, CXCR3, and CCR8.
5961 17947648 Diabetogenic CD4 T cell clones produce several inflammatory chemokines in vitro, but after adoptive transfer we found that the only chemokine that could be detected ex vivo was CCL1.
5962 17947648 These results provide the first evidence that CCR8/CCL1 interaction may play a role in type 1 diabetes through macrophage recruitment and activation.
5963 17947648 Recruitment and activation of macrophages by pathogenic CD4 T cells in type 1 diabetes: evidence for involvement of CCR8 and CCL1.
5964 17947648 Adoptive transfer of diabetogenic CD4 Th1 T cell clones into young NOD or NOD.scid recipients rapidly induces onset of diabetes and also provides a system for analysis of the pancreatic infiltrate.
5965 17947648 Analysis of infiltrating cells after adoptive transfer by the diabetogenic T cell clone BDC-2.5 indicates that large numbers of cells staining for both F4/80 and CD11b are recruited into the pancreas where they are activated to make IL-1beta, TNF-alpha, and NO, and express the chemokine receptors CCR5, CXCR3, and CCR8.
5966 17947648 Diabetogenic CD4 T cell clones produce several inflammatory chemokines in vitro, but after adoptive transfer we found that the only chemokine that could be detected ex vivo was CCL1.
5967 17947648 These results provide the first evidence that CCR8/CCL1 interaction may play a role in type 1 diabetes through macrophage recruitment and activation.
5968 17947648 Recruitment and activation of macrophages by pathogenic CD4 T cells in type 1 diabetes: evidence for involvement of CCR8 and CCL1.
5969 17947648 Adoptive transfer of diabetogenic CD4 Th1 T cell clones into young NOD or NOD.scid recipients rapidly induces onset of diabetes and also provides a system for analysis of the pancreatic infiltrate.
5970 17947648 Analysis of infiltrating cells after adoptive transfer by the diabetogenic T cell clone BDC-2.5 indicates that large numbers of cells staining for both F4/80 and CD11b are recruited into the pancreas where they are activated to make IL-1beta, TNF-alpha, and NO, and express the chemokine receptors CCR5, CXCR3, and CCR8.
5971 17947648 Diabetogenic CD4 T cell clones produce several inflammatory chemokines in vitro, but after adoptive transfer we found that the only chemokine that could be detected ex vivo was CCL1.
5972 17947648 These results provide the first evidence that CCR8/CCL1 interaction may play a role in type 1 diabetes through macrophage recruitment and activation.
5973 17947651 In this study, a CSFE dilution assay was used to detect glutamic acid decarboxylase 65 (GAD65)- and insulin-responsive T cells and HLA-0201*-GAD65(114-122) pentamers were used to detect CD8(+) GAD-responsive T cells in memory CD45RO(+) and naive CD45RO(-) cell populations from patients with type 1 diabetes and healthy control subjects.
5974 17947651 CD4(+) and CD8(+) T cells specific for GAD65 and insulin were present in patients with type 1 diabetes and control subjects.
5975 17947651 Within the naive CD45RO(-) cells, CD4(+) and CD8(+) T cell responses were similar between patients and controls.
5976 17947651 Within the memory CD45RO(+) cells, CD4(+) T cell responses against whole GAD65 and insulin and HLA-0201*-GAD65(114-122) pentamer-positive CD8(+) T cells were found in patients with type 1 diabetes, but not in control subjects (p < 0.05 for all).
5977 17947651 In this study, a CSFE dilution assay was used to detect glutamic acid decarboxylase 65 (GAD65)- and insulin-responsive T cells and HLA-0201*-GAD65(114-122) pentamers were used to detect CD8(+) GAD-responsive T cells in memory CD45RO(+) and naive CD45RO(-) cell populations from patients with type 1 diabetes and healthy control subjects.
5978 17947651 CD4(+) and CD8(+) T cells specific for GAD65 and insulin were present in patients with type 1 diabetes and control subjects.
5979 17947651 Within the naive CD45RO(-) cells, CD4(+) and CD8(+) T cell responses were similar between patients and controls.
5980 17947651 Within the memory CD45RO(+) cells, CD4(+) T cell responses against whole GAD65 and insulin and HLA-0201*-GAD65(114-122) pentamer-positive CD8(+) T cells were found in patients with type 1 diabetes, but not in control subjects (p < 0.05 for all).
5981 17947651 In this study, a CSFE dilution assay was used to detect glutamic acid decarboxylase 65 (GAD65)- and insulin-responsive T cells and HLA-0201*-GAD65(114-122) pentamers were used to detect CD8(+) GAD-responsive T cells in memory CD45RO(+) and naive CD45RO(-) cell populations from patients with type 1 diabetes and healthy control subjects.
5982 17947651 CD4(+) and CD8(+) T cells specific for GAD65 and insulin were present in patients with type 1 diabetes and control subjects.
5983 17947651 Within the naive CD45RO(-) cells, CD4(+) and CD8(+) T cell responses were similar between patients and controls.
5984 17947651 Within the memory CD45RO(+) cells, CD4(+) T cell responses against whole GAD65 and insulin and HLA-0201*-GAD65(114-122) pentamer-positive CD8(+) T cells were found in patients with type 1 diabetes, but not in control subjects (p < 0.05 for all).
5985 17947667 CD86 has sustained costimulatory effects on CD8 T cells.
5986 17947667 CD80 and CD86 both costimulate T cell activation.
5987 17947667 We have studied mice expressing rat insulin promoter (RIP)-CD80 and RIP-CD86 on the NOD and NOD.scid genetic background to generate in vivo models, using diabetes as a readout for cytotoxic T cell activation.
5988 17947667 However, the secondary in vivo response was maintained if T cells were activated through CD86 costimulation compared with CD80.
5989 17947667 In vitro, CD80 costimulation enhanced cytotoxicity, proliferation, and cytokine secretion in activated CD8 T cells compared with CD86 costimulation.
5990 17947667 We demonstrated increased CTLA-4 and programmed death-1 inhibitory molecule expression following costimulation by both CD80 and CD86 (CD80 > CD86).
5991 17947667 Furthermore, T cells stimulated by CD80 were more susceptible to inhibition by CD4(+)CD25(+) T cells.
5992 17947667 Overall, while CD86 does not stimulate an initial response as strongly as CD80, there is greater sustained activity that is seen even in the absence of continued costimulation.
5993 17949947 The source of TcR was a CD4(+) T(H)1(+) T-cell clone which responded to an immunodominant epitope of the human islet protein GAD65, an epitope shared with both GAD65 and GAD67 in the mouse.
5994 17949947 The resulting HLA-DR4/GAD-TcR transgenic mice on a Rag2(o/o)/I-Ab(o/o)/B6 background exhibited a CD4(+) infiltrate into pancreatic islets that correlated with a loss of insulin in infiltrated islets.
5995 17949947 T cells containing the GAD65/67 (555-567) responsive TcR undergo strong negative selection as evidenced by a 10-fold lower thymocyte cellularity compared to non-TcR transgenic mice, and clonotype peripheral T cells represented approximately 1% of CD4(+) T cells in Rag2 sufficient mice.
5996 17949947 Upon in vitro stimulation, GAD65/67 555-567 responsive T cells secrete interferon-gamma, minimal interleukin (IL)-2 and tumor necrosis factor-alpha, and no IL-4, IL-5, IL-10, or IL-17, consistent with a T(H)1 profile.
5997 17949947 These data demonstrate that CD4(+) T cells specific for a naturally processed epitope within GAD can specifically home to pancreatic islets and lead to impaired islet beta-cell function in diabetes-associated HLA-DR4 transgenic mice on the relatively non-autoimmune C57BL/6 background.
5998 17949947 The source of TcR was a CD4(+) T(H)1(+) T-cell clone which responded to an immunodominant epitope of the human islet protein GAD65, an epitope shared with both GAD65 and GAD67 in the mouse.
5999 17949947 The resulting HLA-DR4/GAD-TcR transgenic mice on a Rag2(o/o)/I-Ab(o/o)/B6 background exhibited a CD4(+) infiltrate into pancreatic islets that correlated with a loss of insulin in infiltrated islets.
6000 17949947 T cells containing the GAD65/67 (555-567) responsive TcR undergo strong negative selection as evidenced by a 10-fold lower thymocyte cellularity compared to non-TcR transgenic mice, and clonotype peripheral T cells represented approximately 1% of CD4(+) T cells in Rag2 sufficient mice.
6001 17949947 Upon in vitro stimulation, GAD65/67 555-567 responsive T cells secrete interferon-gamma, minimal interleukin (IL)-2 and tumor necrosis factor-alpha, and no IL-4, IL-5, IL-10, or IL-17, consistent with a T(H)1 profile.
6002 17949947 These data demonstrate that CD4(+) T cells specific for a naturally processed epitope within GAD can specifically home to pancreatic islets and lead to impaired islet beta-cell function in diabetes-associated HLA-DR4 transgenic mice on the relatively non-autoimmune C57BL/6 background.
6003 17949947 The source of TcR was a CD4(+) T(H)1(+) T-cell clone which responded to an immunodominant epitope of the human islet protein GAD65, an epitope shared with both GAD65 and GAD67 in the mouse.
6004 17949947 The resulting HLA-DR4/GAD-TcR transgenic mice on a Rag2(o/o)/I-Ab(o/o)/B6 background exhibited a CD4(+) infiltrate into pancreatic islets that correlated with a loss of insulin in infiltrated islets.
6005 17949947 T cells containing the GAD65/67 (555-567) responsive TcR undergo strong negative selection as evidenced by a 10-fold lower thymocyte cellularity compared to non-TcR transgenic mice, and clonotype peripheral T cells represented approximately 1% of CD4(+) T cells in Rag2 sufficient mice.
6006 17949947 Upon in vitro stimulation, GAD65/67 555-567 responsive T cells secrete interferon-gamma, minimal interleukin (IL)-2 and tumor necrosis factor-alpha, and no IL-4, IL-5, IL-10, or IL-17, consistent with a T(H)1 profile.
6007 17949947 These data demonstrate that CD4(+) T cells specific for a naturally processed epitope within GAD can specifically home to pancreatic islets and lead to impaired islet beta-cell function in diabetes-associated HLA-DR4 transgenic mice on the relatively non-autoimmune C57BL/6 background.
6008 17949947 The source of TcR was a CD4(+) T(H)1(+) T-cell clone which responded to an immunodominant epitope of the human islet protein GAD65, an epitope shared with both GAD65 and GAD67 in the mouse.
6009 17949947 The resulting HLA-DR4/GAD-TcR transgenic mice on a Rag2(o/o)/I-Ab(o/o)/B6 background exhibited a CD4(+) infiltrate into pancreatic islets that correlated with a loss of insulin in infiltrated islets.
6010 17949947 T cells containing the GAD65/67 (555-567) responsive TcR undergo strong negative selection as evidenced by a 10-fold lower thymocyte cellularity compared to non-TcR transgenic mice, and clonotype peripheral T cells represented approximately 1% of CD4(+) T cells in Rag2 sufficient mice.
6011 17949947 Upon in vitro stimulation, GAD65/67 555-567 responsive T cells secrete interferon-gamma, minimal interleukin (IL)-2 and tumor necrosis factor-alpha, and no IL-4, IL-5, IL-10, or IL-17, consistent with a T(H)1 profile.
6012 17949947 These data demonstrate that CD4(+) T cells specific for a naturally processed epitope within GAD can specifically home to pancreatic islets and lead to impaired islet beta-cell function in diabetes-associated HLA-DR4 transgenic mice on the relatively non-autoimmune C57BL/6 background.
6013 17959356 Because the vitamin D receptor is expressed on CD4+T cells and is known to affect cytokine responses, several groups have investigated the association between the vitamin D receptor gene BsmI polymorphism and type 1 diabetes.
6014 17966038 Distinct local immunogenic stimuli dictate differential requirements for CD4+ and CD8+ T cell subsets in the pathogenesis of spontaneous autoimmune diabetes.
6015 17966038 We describe how CD4+ or CD8+T cells can contribute differentially to the pathogenesis of T1D using the HLA-DQ8 transgenic mouse models.
6016 17966038 HLA-DQ8 transgenic mice expressing the costimulatory molecule, B7.1 (RIP.B7.1), or the proinflammatory cytokine, TNF-alpha (RIP.TNF) or both (RIP.B7.RIP.TNF) under the control of rat insulin promoter (RIP) were used.
6017 17966038 In the RIP-B7.RIP-TNF double transgenic mouse model, either CD4+ or CD8+T cells were sufficient to precipitate diabetes in 100% of the animals.
6018 17966038 Thus, the relative roles of CD4+ or CD8+T cells in the pathogenesis of T1D are possibly determined by the local inflammatory stimuli.
6019 17966038 Distinct local immunogenic stimuli dictate differential requirements for CD4+ and CD8+ T cell subsets in the pathogenesis of spontaneous autoimmune diabetes.
6020 17966038 We describe how CD4+ or CD8+T cells can contribute differentially to the pathogenesis of T1D using the HLA-DQ8 transgenic mouse models.
6021 17966038 HLA-DQ8 transgenic mice expressing the costimulatory molecule, B7.1 (RIP.B7.1), or the proinflammatory cytokine, TNF-alpha (RIP.TNF) or both (RIP.B7.RIP.TNF) under the control of rat insulin promoter (RIP) were used.
6022 17966038 In the RIP-B7.RIP-TNF double transgenic mouse model, either CD4+ or CD8+T cells were sufficient to precipitate diabetes in 100% of the animals.
6023 17966038 Thus, the relative roles of CD4+ or CD8+T cells in the pathogenesis of T1D are possibly determined by the local inflammatory stimuli.
6024 17966038 Distinct local immunogenic stimuli dictate differential requirements for CD4+ and CD8+ T cell subsets in the pathogenesis of spontaneous autoimmune diabetes.
6025 17966038 We describe how CD4+ or CD8+T cells can contribute differentially to the pathogenesis of T1D using the HLA-DQ8 transgenic mouse models.
6026 17966038 HLA-DQ8 transgenic mice expressing the costimulatory molecule, B7.1 (RIP.B7.1), or the proinflammatory cytokine, TNF-alpha (RIP.TNF) or both (RIP.B7.RIP.TNF) under the control of rat insulin promoter (RIP) were used.
6027 17966038 In the RIP-B7.RIP-TNF double transgenic mouse model, either CD4+ or CD8+T cells were sufficient to precipitate diabetes in 100% of the animals.
6028 17966038 Thus, the relative roles of CD4+ or CD8+T cells in the pathogenesis of T1D are possibly determined by the local inflammatory stimuli.
6029 17966038 Distinct local immunogenic stimuli dictate differential requirements for CD4+ and CD8+ T cell subsets in the pathogenesis of spontaneous autoimmune diabetes.
6030 17966038 We describe how CD4+ or CD8+T cells can contribute differentially to the pathogenesis of T1D using the HLA-DQ8 transgenic mouse models.
6031 17966038 HLA-DQ8 transgenic mice expressing the costimulatory molecule, B7.1 (RIP.B7.1), or the proinflammatory cytokine, TNF-alpha (RIP.TNF) or both (RIP.B7.RIP.TNF) under the control of rat insulin promoter (RIP) were used.
6032 17966038 In the RIP-B7.RIP-TNF double transgenic mouse model, either CD4+ or CD8+T cells were sufficient to precipitate diabetes in 100% of the animals.
6033 17966038 Thus, the relative roles of CD4+ or CD8+T cells in the pathogenesis of T1D are possibly determined by the local inflammatory stimuli.
6034 17983444 Protection is associated with an increased proportion of T cells with CD4+ forkhead box P3+ regulatory phenotype within the islet infiltrate of treated animals.
6035 17991775 FoxP3(+)CD4(+) regulatory T cells (Tregs) play a key role in the maintenance of peripheral self-tolerance, and it has been suggested that diabetes-susceptible nonobese diabetic (NOD) mice are defective in the generation and numbers of Tregs.
6036 18003758 Sphingosine-1-phosphate reduces CD4+ T-cell activation in type 1 diabetes through regulation of hypoxia-inducible factor short isoform I.1 and CD69.
6037 18024188 The CD4(+)CD25(+) lineage of regulatory T (Treg) cells plays a key role in controlling immune and autoimmune responses and is characterized by a unique transcriptional signature.
6038 18024188 We have performed a cross-sectional analysis of the Treg cell signature in Treg-like cells generated under a number of conditions, with or without Foxp3, to delineate the elements that can be ascribed to T cell activation, interleukin-2, transforming growth factor-beta (TGF-beta) signaling, or Foxp3 itself.
6039 18025164 The therapeutic effect of transfused activated NOD B cells correlates closely with the observed decreased islet inflammation, reduced IFN-gamma production and increased production of IL-4 and IL-10 by splenocytes and CD4(+) T cells from NOD recipients of BCR-stimulated NOD B cells relative to splenocytes and CD4(+) T cells from PBS-treated control NOD mice.
6040 18025175 These changes in autoreactive CD4(+) T cell activation were associated with reduced dendritic cell endocytosis and soluble Ag presentation but were not as a result of virally induced IL-10 or changes in Ag-specific regulatory T cell populations.
6041 18029395 Essential roles of TGF-beta in anti-CD3 antibody therapy: reversal of diabetes in nonobese diabetic mice independent of Foxp3+CD4+ regulatory T cells.
6042 18029395 Furthermore, we found that anti-CD3 treatment did not increase the forkhead box p3+ (Foxp3+)CD4+ regulatory T cells (Tregs).
6043 18029395 Thus, our data showed a dispensable role of Foxp3+CD4+ Tregs in anti-CD3 antibody-reversed diabetes in NOD mice.
6044 18029395 Essential roles of TGF-beta in anti-CD3 antibody therapy: reversal of diabetes in nonobese diabetic mice independent of Foxp3+CD4+ regulatory T cells.
6045 18029395 Furthermore, we found that anti-CD3 treatment did not increase the forkhead box p3+ (Foxp3+)CD4+ regulatory T cells (Tregs).
6046 18029395 Thus, our data showed a dispensable role of Foxp3+CD4+ Tregs in anti-CD3 antibody-reversed diabetes in NOD mice.
6047 18029395 Essential roles of TGF-beta in anti-CD3 antibody therapy: reversal of diabetes in nonobese diabetic mice independent of Foxp3+CD4+ regulatory T cells.
6048 18029395 Furthermore, we found that anti-CD3 treatment did not increase the forkhead box p3+ (Foxp3+)CD4+ regulatory T cells (Tregs).
6049 18029395 Thus, our data showed a dispensable role of Foxp3+CD4+ Tregs in anti-CD3 antibody-reversed diabetes in NOD mice.
6050 18063685 Although GLP-1R mRNA transcripts were detected in spleen, thymus, and lymph nodes from nonobese diabetic mice, Ex-4 treatment was not associated with significant changes in the numbers of CD4+ or CD8+ T cells or B cells in the spleen.
6051 18063685 However, Ex-4 treatment resulted in an increase in the number of CD4+ and CD8+ T cells in the lymph nodes and a reduction in the numbers of CD4+CD25+Foxp3+ regulatory T cells in the thymus but not in lymph nodes.
6052 18063685 Although GLP-1R mRNA transcripts were detected in spleen, thymus, and lymph nodes from nonobese diabetic mice, Ex-4 treatment was not associated with significant changes in the numbers of CD4+ or CD8+ T cells or B cells in the spleen.
6053 18063685 However, Ex-4 treatment resulted in an increase in the number of CD4+ and CD8+ T cells in the lymph nodes and a reduction in the numbers of CD4+CD25+Foxp3+ regulatory T cells in the thymus but not in lymph nodes.
6054 18075857 Our data showed that the surface expressions of MHC II and CD86 on NOD-derived DC were increased after insulin treatment compared with those on PBS controlled mice.
6055 18075857 The dendritic cells with a mature phenotype and increased MLR stimulation adoptively transferred immune tolerogenic effects in secondary NOD-SCID mice, which were associated with significant greater IL-10, TGF-beta production and CD4(+)CD25(+)T differentiation from splenocytes compared with NOD-SCID control recipients.
6056 18087999 These data demonstrate that simultaneous targeting of LFA-1, CD154, and CD4 molecules can be effective in inducing long-term islet xenograft survival and function in autoimmune-prone NOD mice.
6057 18091354 We tested the hypothesis that formula feeding during the neonatal period accelerates the development of T1D in diabetes-prone BioBreeding (BBDP) rats through regulation of CD4+CD25+ regulatory T lymphocytes (T(reg)) and anti-inflammatory cytokines.
6058 18091354 The spleen and thymus were analyzed for Foxp3-expressing CD4+/CD25+ T cells.
6059 18091354 Multiplex enzyme-linked immunosorbent assays (ELISAs) were performed to measure cytokine-induced neutrophil chemoattractant (CINC), tumor necrosis factor alpha (TNF-alpha), interferon-gamma (IFN-gamma), interleukin (IL)-4, IL-10, and IL-18.
6060 18091354 There were no differences in ileal cytokine concentrations of 75-d-old rats, but the formula-fed rats had greater liver TNF-alpha (p < 0.001), IFN-gamma, and IL-4 (p < 0.01) and lower IL-10 (p = 0.002) compared with MF animals.
6061 18091354 We tested the hypothesis that formula feeding during the neonatal period accelerates the development of T1D in diabetes-prone BioBreeding (BBDP) rats through regulation of CD4+CD25+ regulatory T lymphocytes (T(reg)) and anti-inflammatory cytokines.
6062 18091354 The spleen and thymus were analyzed for Foxp3-expressing CD4+/CD25+ T cells.
6063 18091354 Multiplex enzyme-linked immunosorbent assays (ELISAs) were performed to measure cytokine-induced neutrophil chemoattractant (CINC), tumor necrosis factor alpha (TNF-alpha), interferon-gamma (IFN-gamma), interleukin (IL)-4, IL-10, and IL-18.
6064 18091354 There were no differences in ileal cytokine concentrations of 75-d-old rats, but the formula-fed rats had greater liver TNF-alpha (p < 0.001), IFN-gamma, and IL-4 (p < 0.01) and lower IL-10 (p = 0.002) compared with MF animals.
6065 18093919 To address this, a mouse CD20 antibody that depletes >95% of mature B cells in mice with otherwise intact immune systems was used to assess the role of B cells in CD4(+) and CD8(+) T cell activation and expansion in vivo.
6066 18093919 B cell depletion had no direct effect on T cell subsets or the activation status of CD4(+) and CD8(+) T cells in naive mice.
6067 18093919 However, B cell depletion impaired CD4(+) T cell activation and clonal expansion in response to protein antigens and pathogen challenge, whereas CD8(+) T cell activation was not affected.
6068 18093919 Most importantly, B cell depletion inhibited antigen-specific CD4(+) T cell expansion in both collagen-induced arthritis and autoimmune diabetes mouse models.
6069 18093919 To address this, a mouse CD20 antibody that depletes >95% of mature B cells in mice with otherwise intact immune systems was used to assess the role of B cells in CD4(+) and CD8(+) T cell activation and expansion in vivo.
6070 18093919 B cell depletion had no direct effect on T cell subsets or the activation status of CD4(+) and CD8(+) T cells in naive mice.
6071 18093919 However, B cell depletion impaired CD4(+) T cell activation and clonal expansion in response to protein antigens and pathogen challenge, whereas CD8(+) T cell activation was not affected.
6072 18093919 Most importantly, B cell depletion inhibited antigen-specific CD4(+) T cell expansion in both collagen-induced arthritis and autoimmune diabetes mouse models.
6073 18093919 To address this, a mouse CD20 antibody that depletes >95% of mature B cells in mice with otherwise intact immune systems was used to assess the role of B cells in CD4(+) and CD8(+) T cell activation and expansion in vivo.
6074 18093919 B cell depletion had no direct effect on T cell subsets or the activation status of CD4(+) and CD8(+) T cells in naive mice.
6075 18093919 However, B cell depletion impaired CD4(+) T cell activation and clonal expansion in response to protein antigens and pathogen challenge, whereas CD8(+) T cell activation was not affected.
6076 18093919 Most importantly, B cell depletion inhibited antigen-specific CD4(+) T cell expansion in both collagen-induced arthritis and autoimmune diabetes mouse models.
6077 18093919 To address this, a mouse CD20 antibody that depletes >95% of mature B cells in mice with otherwise intact immune systems was used to assess the role of B cells in CD4(+) and CD8(+) T cell activation and expansion in vivo.
6078 18093919 B cell depletion had no direct effect on T cell subsets or the activation status of CD4(+) and CD8(+) T cells in naive mice.
6079 18093919 However, B cell depletion impaired CD4(+) T cell activation and clonal expansion in response to protein antigens and pathogen challenge, whereas CD8(+) T cell activation was not affected.
6080 18093919 Most importantly, B cell depletion inhibited antigen-specific CD4(+) T cell expansion in both collagen-induced arthritis and autoimmune diabetes mouse models.
6081 18157812 Functional inhibition related to structure of a highly potent insulin-specific CD8 T cell clone using altered peptide ligands.
6082 18157812 Insulin-reactive CD8 T cells are amongst the earliest islet-infiltrating CD8 T cells in NOD mice.
6083 18157812 This is important in considering the therapeutic use of peptides as APL that encompass both CD4 and CD8 epitopes of insulin.
6084 18178847 Genome-wide microarray expression analysis of CD4+ T Cells from nonobese diabetic congenic mice identifies Cd55 (Daf1) and Acadl as candidate genes for type 1 diabetes.
6085 18178847 NOD.Idd3/5 congenic mice have insulin-dependent diabetes (Idd) regions on chromosomes 1 (Idd5) and 3 (Idd3) derived from the nondiabetic strains B10 and B6, respectively.
6086 18178847 To test the hypothesis that candidate Idd genes can be identified by differential gene expression between activated CD4+ T cells from the diabetes-susceptible NOD strain and the diabetes-resistant NOD.Idd3/5 congenic strain, genome-wide microarray expression analysis was performed using an empirical Bayes method.
6087 18178847 The two genes with the greatest differential RNA expression on chromosome 1 were those encoding decay-accelerating factor (DAF, also known as CD55) and acyl-coenzyme A dehydrogenase, long chain, which are located in the Idd5.4 and Idd5.3 regions, respectively.
6088 18178847 In the case of DAF, differential expression of mRNA was extended to the protein level; NOD CD4+ T cells expressed higher levels of cell surface DAF compared with NOD.Idd3/5 CD4+ T cells following activation with anti-CD3 and -CD28.
6089 18178847 DAF up-regulation was IL-4 dependent and blocked under Th1 conditions.
6090 18178847 Genome-wide microarray expression analysis of CD4+ T Cells from nonobese diabetic congenic mice identifies Cd55 (Daf1) and Acadl as candidate genes for type 1 diabetes.
6091 18178847 NOD.Idd3/5 congenic mice have insulin-dependent diabetes (Idd) regions on chromosomes 1 (Idd5) and 3 (Idd3) derived from the nondiabetic strains B10 and B6, respectively.
6092 18178847 To test the hypothesis that candidate Idd genes can be identified by differential gene expression between activated CD4+ T cells from the diabetes-susceptible NOD strain and the diabetes-resistant NOD.Idd3/5 congenic strain, genome-wide microarray expression analysis was performed using an empirical Bayes method.
6093 18178847 The two genes with the greatest differential RNA expression on chromosome 1 were those encoding decay-accelerating factor (DAF, also known as CD55) and acyl-coenzyme A dehydrogenase, long chain, which are located in the Idd5.4 and Idd5.3 regions, respectively.
6094 18178847 In the case of DAF, differential expression of mRNA was extended to the protein level; NOD CD4+ T cells expressed higher levels of cell surface DAF compared with NOD.Idd3/5 CD4+ T cells following activation with anti-CD3 and -CD28.
6095 18178847 DAF up-regulation was IL-4 dependent and blocked under Th1 conditions.
6096 18178847 Genome-wide microarray expression analysis of CD4+ T Cells from nonobese diabetic congenic mice identifies Cd55 (Daf1) and Acadl as candidate genes for type 1 diabetes.
6097 18178847 NOD.Idd3/5 congenic mice have insulin-dependent diabetes (Idd) regions on chromosomes 1 (Idd5) and 3 (Idd3) derived from the nondiabetic strains B10 and B6, respectively.
6098 18178847 To test the hypothesis that candidate Idd genes can be identified by differential gene expression between activated CD4+ T cells from the diabetes-susceptible NOD strain and the diabetes-resistant NOD.Idd3/5 congenic strain, genome-wide microarray expression analysis was performed using an empirical Bayes method.
6099 18178847 The two genes with the greatest differential RNA expression on chromosome 1 were those encoding decay-accelerating factor (DAF, also known as CD55) and acyl-coenzyme A dehydrogenase, long chain, which are located in the Idd5.4 and Idd5.3 regions, respectively.
6100 18178847 In the case of DAF, differential expression of mRNA was extended to the protein level; NOD CD4+ T cells expressed higher levels of cell surface DAF compared with NOD.Idd3/5 CD4+ T cells following activation with anti-CD3 and -CD28.
6101 18178847 DAF up-regulation was IL-4 dependent and blocked under Th1 conditions.
6102 18200031 Moreover, these SNPs segregate with differential production of IL-2 by CD4(+) T cells as well as susceptibility alleles at Idd3 and Eae3, QTL controlling insulin-dependent diabetes mellitus and experimental allergic encephalomyelitis.
6103 18200031 These are the first SNPs identified within the extended murine IL2 promoter that control differential IL-2 transcription in CD4(+) T cells, and, as such, they are not only candidates for Aod2, but are also candidates for a shared autoimmune disease-susceptibility locus underlying Idd3 and Eae3.
6104 18200031 Moreover, these SNPs segregate with differential production of IL-2 by CD4(+) T cells as well as susceptibility alleles at Idd3 and Eae3, QTL controlling insulin-dependent diabetes mellitus and experimental allergic encephalomyelitis.
6105 18200031 These are the first SNPs identified within the extended murine IL2 promoter that control differential IL-2 transcription in CD4(+) T cells, and, as such, they are not only candidates for Aod2, but are also candidates for a shared autoimmune disease-susceptibility locus underlying Idd3 and Eae3.
6106 18226498 We also find that beta cell antigen-specific IL-10-producing CD4+ T cells are induced in the presence of apoptotic splenic stromal cells.
6107 18248531 CD 127- and FoxP3+ expression on CD25+CD4+ T regulatory cells upon specific diabetogeneic stimulation in high-risk relatives of type 1 diabetes mellitus patients.
6108 18248531 Abnormalities in CD4+CD25+ regulatory T cells (Treg) may contribute to type 1 diabetes (T1D) development.
6109 18248531 Using two novel markers of CD4+CD25+ Treg (CD127- and FoxP3+ respectively), we evaluated number and function of Treg after specific stimulation with diabetogeneic autoantigens in 11 high-risk (according to HLA-linked risk) relatives of T1D patients and 14 age-matched healthy controls using a cytokine secretion assay based on interferon-gamma (IFN-gamma) production.
6110 18248531 CD 127- and FoxP3+ expression on CD25+CD4+ T regulatory cells upon specific diabetogeneic stimulation in high-risk relatives of type 1 diabetes mellitus patients.
6111 18248531 Abnormalities in CD4+CD25+ regulatory T cells (Treg) may contribute to type 1 diabetes (T1D) development.
6112 18248531 Using two novel markers of CD4+CD25+ Treg (CD127- and FoxP3+ respectively), we evaluated number and function of Treg after specific stimulation with diabetogeneic autoantigens in 11 high-risk (according to HLA-linked risk) relatives of T1D patients and 14 age-matched healthy controls using a cytokine secretion assay based on interferon-gamma (IFN-gamma) production.
6113 18248531 CD 127- and FoxP3+ expression on CD25+CD4+ T regulatory cells upon specific diabetogeneic stimulation in high-risk relatives of type 1 diabetes mellitus patients.
6114 18248531 Abnormalities in CD4+CD25+ regulatory T cells (Treg) may contribute to type 1 diabetes (T1D) development.
6115 18248531 Using two novel markers of CD4+CD25+ Treg (CD127- and FoxP3+ respectively), we evaluated number and function of Treg after specific stimulation with diabetogeneic autoantigens in 11 high-risk (according to HLA-linked risk) relatives of T1D patients and 14 age-matched healthy controls using a cytokine secretion assay based on interferon-gamma (IFN-gamma) production.
6116 18267303 We analyzed the genes expressed (transcriptomes) and the proteins translated (pro- teomes) in muscle tissues and activated CD4(+) and CD8(+) T-lymphocytes (T-cells) of five Type 2 diabetes (T2DM) subjects using Affymetrix microarrays and mass spectrometry, and compared them with matched non-diabetic controls.
6117 18267303 Gene expressions of insulin receptor (INSR), vitamin D receptor, insulin degrading enzyme, Akt, insulin receptor substrate-1 (IRS-1), IRS-2, glucose transporter 4 (GLUT4), and enzymes of the glycolytic pathway were decreased at least 50% in T2DM than in controls.
6118 18267303 The gene silencing for INSR or TNFalpha resulted in the inhibition or stimulation of GLUT4, respectively.
6119 18283119 The AKT-mTOR axis regulates de novo differentiation of CD4+Foxp3+ cells.
6120 18283119 CD4(+)Foxp3(+) regulatory T (T reg) cells play an essential role in maintaining immunological tolerance via their suppressive function on conventional CD4(+) T (Tconv) cells.
6121 18283119 Expression of active AKT at a stage before Foxp3 turn on during normal T reg differentiation in the thymus selectively impaired differentiation of CD4(+)Foxp3(+) cells without any alteration in the positive selection of Tconv.
6122 18283119 The AKT-mTOR axis regulates de novo differentiation of CD4+Foxp3+ cells.
6123 18283119 CD4(+)Foxp3(+) regulatory T (T reg) cells play an essential role in maintaining immunological tolerance via their suppressive function on conventional CD4(+) T (Tconv) cells.
6124 18283119 Expression of active AKT at a stage before Foxp3 turn on during normal T reg differentiation in the thymus selectively impaired differentiation of CD4(+)Foxp3(+) cells without any alteration in the positive selection of Tconv.
6125 18283119 The AKT-mTOR axis regulates de novo differentiation of CD4+Foxp3+ cells.
6126 18283119 CD4(+)Foxp3(+) regulatory T (T reg) cells play an essential role in maintaining immunological tolerance via their suppressive function on conventional CD4(+) T (Tconv) cells.
6127 18283119 Expression of active AKT at a stage before Foxp3 turn on during normal T reg differentiation in the thymus selectively impaired differentiation of CD4(+)Foxp3(+) cells without any alteration in the positive selection of Tconv.
6128 18283628 Here we report on the IN VITRO findings of a vaccination trial in five MTC patients, who were treated with a new DC generation protocol consisting of granulocyte-macrophage colony-stimulating factor and interferon-alpha (IFN-DCs).
6129 18283628 In two patients who responded to therapy we found a large increase (in mean 2.9+/-1.9%) of antigen-specific IFN-gamma-secreting CD4+ cells as well as an increase of granzyme B positive CD8+ cells (mean 2.2+/-0.2%) in the peripheral blood.
6130 18283628 In parallel, a decrease of CD4+/CD25+/FoxP3+ regulatory T cells was seen.
6131 18283628 Here we report on the IN VITRO findings of a vaccination trial in five MTC patients, who were treated with a new DC generation protocol consisting of granulocyte-macrophage colony-stimulating factor and interferon-alpha (IFN-DCs).
6132 18283628 In two patients who responded to therapy we found a large increase (in mean 2.9+/-1.9%) of antigen-specific IFN-gamma-secreting CD4+ cells as well as an increase of granzyme B positive CD8+ cells (mean 2.2+/-0.2%) in the peripheral blood.
6133 18283628 In parallel, a decrease of CD4+/CD25+/FoxP3+ regulatory T cells was seen.
6134 18283631 They are usually controlled by a network of regulatory mechanisms including CD4+CD25+Foxp3+ regulatory T cells (Tregs).
6135 18287017 CD4 T cells, lymphopenia, and IL-7 in a multistep pathway to autoimmunity.
6136 18287017 We show in a model of beta-islet cell self-reactivity that the transfer of activated autoreactive CD4 T cells can prime and expand endogenous autoreactive CD8 T cells in a CD28- and CD40-dependent manner through the licensing of dendritic cells.
6137 18287017 Autoimmune diabetes rapidly ensued with CD4 help and the subsequent activation of CD8 T cells, which contributed to disease progression.
6138 18287017 With the advent of many biologicals targeting TNFalpha, IL-6, and IL-1 and their effective use in the treatment of autoimmune diseases, we propose that IL-7 and its receptor may be promising targets for biological agents in the treatment of autoimmunity.
6139 18287017 CD4 T cells, lymphopenia, and IL-7 in a multistep pathway to autoimmunity.
6140 18287017 We show in a model of beta-islet cell self-reactivity that the transfer of activated autoreactive CD4 T cells can prime and expand endogenous autoreactive CD8 T cells in a CD28- and CD40-dependent manner through the licensing of dendritic cells.
6141 18287017 Autoimmune diabetes rapidly ensued with CD4 help and the subsequent activation of CD8 T cells, which contributed to disease progression.
6142 18287017 With the advent of many biologicals targeting TNFalpha, IL-6, and IL-1 and their effective use in the treatment of autoimmune diseases, we propose that IL-7 and its receptor may be promising targets for biological agents in the treatment of autoimmunity.
6143 18287017 CD4 T cells, lymphopenia, and IL-7 in a multistep pathway to autoimmunity.
6144 18287017 We show in a model of beta-islet cell self-reactivity that the transfer of activated autoreactive CD4 T cells can prime and expand endogenous autoreactive CD8 T cells in a CD28- and CD40-dependent manner through the licensing of dendritic cells.
6145 18287017 Autoimmune diabetes rapidly ensued with CD4 help and the subsequent activation of CD8 T cells, which contributed to disease progression.
6146 18287017 With the advent of many biologicals targeting TNFalpha, IL-6, and IL-1 and their effective use in the treatment of autoimmune diseases, we propose that IL-7 and its receptor may be promising targets for biological agents in the treatment of autoimmunity.
6147 18292508 Rather, impaired CD4+ and CD8+ T cell activation in the lymph nodes of B cell-depleted NOD mice may delay diabetes onset.
6148 18295332 Here we show that antibodies to CD1d, when given during early thymic development, induce specific increases in surface TCR of developing NOD and C57BL/6 CD4(+)CD8(+) (DP) invariant NKT (iNKT) cells.
6149 18297721 Compared with controls on day 7 p.i., cytofluorometric analyses on cells from CV-B4 E2-infected foetal thymus organ cultures displayed a marked increase in the percentage of the most immature CD3(-)CD4(-)CD8(-) thymocytes, and a decrease in the percentage of immature CD3(-)CD4(+)CD8(+) cells, together with an increase in the percentage of mature CD3(+)CD4(+) and CD3(+)CD8(+) cells.
6150 18299186 Reduced CD4+T cell activation in children with type 1 diabetes carrying the PTPN22/Lyp 620Trp variant.
6151 18299186 We found a decreased proliferation and IL-2 production of CD4(+)T cells after anti-CD3/anti-CD28 stimulation (p=0.04 for IL-2) among T1D patients.
6152 18299186 In conclusion, the LYP 620Trp variant is associated with reduced activation, proliferation and IL-2 production in CD4(+)T cells among T1D patients.
6153 18299186 Reduced CD4+T cell activation in children with type 1 diabetes carrying the PTPN22/Lyp 620Trp variant.
6154 18299186 We found a decreased proliferation and IL-2 production of CD4(+)T cells after anti-CD3/anti-CD28 stimulation (p=0.04 for IL-2) among T1D patients.
6155 18299186 In conclusion, the LYP 620Trp variant is associated with reduced activation, proliferation and IL-2 production in CD4(+)T cells among T1D patients.
6156 18299186 Reduced CD4+T cell activation in children with type 1 diabetes carrying the PTPN22/Lyp 620Trp variant.
6157 18299186 We found a decreased proliferation and IL-2 production of CD4(+)T cells after anti-CD3/anti-CD28 stimulation (p=0.04 for IL-2) among T1D patients.
6158 18299186 In conclusion, the LYP 620Trp variant is associated with reduced activation, proliferation and IL-2 production in CD4(+)T cells among T1D patients.
6159 18300057 The two possibilities to explain the pathogenic basis of stiff-person syndrome (SPS) are intrathecal sensitization of GAD65-reactive CD4+T cells and synthesis of GAD65-specific autoantibodies within the CNS [Rakocevic et al., Arch.
6160 18308198 Recent data suggest that the proinsulin cleavage product C-peptide could play a causal role in atherogenesis by promoting monocyte and CD4-positive lymphocyte recruitment in early arteriosclerotic lesions and by inducing the proliferation of vascular smooth muscle cells.
6161 18317533 Immunodysregulation, polyendocrinopathy, enteropathy, X-linked (IPEX) syndrome is a rare disorder caused by mutations in the FOXP3 gene that result in the defective development of CD4+CD25+ regulatory T cells which constitute an important T cell subset involved in immune homeostasis and protection against autoimmunity.
6162 18317533 Apart from its clinical implications, IPEX illustrates the importance of immunoregulatory cells such as CD4+CD25+ regulatory T cells.
6163 18317533 Immunodysregulation, polyendocrinopathy, enteropathy, X-linked (IPEX) syndrome is a rare disorder caused by mutations in the FOXP3 gene that result in the defective development of CD4+CD25+ regulatory T cells which constitute an important T cell subset involved in immune homeostasis and protection against autoimmunity.
6164 18317533 Apart from its clinical implications, IPEX illustrates the importance of immunoregulatory cells such as CD4+CD25+ regulatory T cells.
6165 18319580 In the diabetic dogs, the counts of CD3(+) (T cells), CD4(+) (Helper T cells) and CD21(+) (B cells) cells and the peripheral lymphocytes CD4/CD8 ratio were significantly lower than those in the control dogs.
6166 18322192 We used insulinomas transfected with the CIITA transactivator, which resulted in their expression of class II histocompatibility molecules and activation of diabetogenic CD4 T cells.
6167 18351019 Cellular infiltrate in successful grafts revealed CD4 T cells and macrophages along the periphery and within the grafts, and very few CD8 T cells.
6168 18351019 Conversely, examination of unsuccessful grafts, harvested from hyperglycemic recipients at the time of rejection, revealed the presence of SC arranged randomly with islets adjacent to the Sertoli cells, when present, and massive CD4 and CD8 T cell as well as macrophage cell infiltration.
6169 18351019 Cellular infiltrate in successful grafts revealed CD4 T cells and macrophages along the periphery and within the grafts, and very few CD8 T cells.
6170 18351019 Conversely, examination of unsuccessful grafts, harvested from hyperglycemic recipients at the time of rejection, revealed the presence of SC arranged randomly with islets adjacent to the Sertoli cells, when present, and massive CD4 and CD8 T cell as well as macrophage cell infiltration.
6171 18351394 A retrospective analysis revealed that tubulointerstitial infiltrates present in the biopsies prior to treatment with rituximab contained numerous CD20+ and CD3+ (CD4 > CD8) lymphocyte aggregates.
6172 18354167 Autoimmunity to both proinsulin and IGRP is required for diabetes in nonobese diabetic 8.3 TCR transgenic mice.
6173 18354167 T cells specific for proinsulin and islet-specific glucose-6-phosphatase catalytic subunit related protein (IGRP) induce diabetes in nonobese diabetic (NOD) mice.
6174 18354167 TCR transgenic mice with CD8(+) T cells specific for IGRP(206-214) (NOD8.3 mice) develop accelerated diabetes that requires CD4(+) T cell help.
6175 18354167 We previously showed that immune responses against proinsulin are necessary for IGRP(206-214)-specific CD8(+) T cells to expand.
6176 18354167 This indicates that immunity to proinsulin is even required in the great majority of NOD8.3 mice that have a pre-existing repertoire of IGRP(206-214)-specific cells.
6177 18354167 This suggests that islet inflammation can substitute for proinsulin-specific CD4(+) T cell help to activate IGRP(206-214)-specific T cells.
6178 18354167 Autoimmunity to both proinsulin and IGRP is required for diabetes in nonobese diabetic 8.3 TCR transgenic mice.
6179 18354167 T cells specific for proinsulin and islet-specific glucose-6-phosphatase catalytic subunit related protein (IGRP) induce diabetes in nonobese diabetic (NOD) mice.
6180 18354167 TCR transgenic mice with CD8(+) T cells specific for IGRP(206-214) (NOD8.3 mice) develop accelerated diabetes that requires CD4(+) T cell help.
6181 18354167 We previously showed that immune responses against proinsulin are necessary for IGRP(206-214)-specific CD8(+) T cells to expand.
6182 18354167 This indicates that immunity to proinsulin is even required in the great majority of NOD8.3 mice that have a pre-existing repertoire of IGRP(206-214)-specific cells.
6183 18354167 This suggests that islet inflammation can substitute for proinsulin-specific CD4(+) T cell help to activate IGRP(206-214)-specific T cells.
6184 18383041 Marked attenuation in cellularity of the CD4+ single-positive thymocyte compartment in ADAP-deficient BDC/B6g7/b animals suggests a mechanism for induction of the lymphopenia.
6185 18385016 CD4+ T cells from type 1 diabetic and healthy subjects exhibit different thresholds of activation to a naturally processed proinsulin epitope.
6186 18387839 Effects of an oral superoxide dismutase enzyme supplementation on indices of oxidative stress, proviral load, and CD4:CD8 ratios in asymptomatic FIV-infected cats.
6187 18387839 The CD4+ to CD8+ ratio increased significantly (0.66-0.88) in the SOD supplemented FIV-infected cats but not in the unsupplemented FIV-infected cats.
6188 18387839 Effects of an oral superoxide dismutase enzyme supplementation on indices of oxidative stress, proviral load, and CD4:CD8 ratios in asymptomatic FIV-infected cats.
6189 18387839 The CD4+ to CD8+ ratio increased significantly (0.66-0.88) in the SOD supplemented FIV-infected cats but not in the unsupplemented FIV-infected cats.
6190 18390000 In diabetic subjects, increased CD19 and CD23 expressions were observed before exercise.
6191 18390000 In both groups (diabetic/control) CD3, CD4 expressions and CD4/CD8 ratio were decreased following the exercise, however expression of natural killer (NK) cells increased.
6192 18390698 The treatment caused long-term desensitization in treated animals to hen OVA via a dexamethasone-dependent tolerogenic mechanism that blocks maturation of dendritic cells and expands OVA(323-339)-specific CD4(+)CD25(+)Foxp3(+) regulatory T cells in vivo.
6193 18417224 Interleukin-2 (IL-2) plays an established role in T-cell regulation through binding to the high-affinity IL-2 receptor (IL-2R).
6194 18417224 The non-redundant role of IL-2 and its receptor in etiology of T1D could be particularly attributable to the regulation of CD4+ CD25+ regulatory T cells, whose function is critical in maintaining immune homeostasis.
6195 18453575 Preferential costimulation by CD80 results in IL-10-dependent TGF-beta1(+) -adaptive regulatory T cell generation.
6196 18453575 Costimulatory ligands CD80 and CD86 have different binding preferences and affinities to their receptors, CD28 and CTLA-4.
6197 18453575 Earlier, we demonstrated that CD80 binds to CTLA-4 with higher affinity and has a role in suppressing T cell response.
6198 18453575 These T cells showed TGF-beta1 on their surface and secreted TGF-beta1 and IL-10 upon restimulation.
6199 18453575 Although blockade of CTLA-4 and neutralization of IL-10 profoundly inhibited the induction of these TGF-beta1(+) T cells, their ability to suppress the effector T cell proliferation was abrogated by neutralization of TGF-beta1 alone.
6200 18453575 Induction of TGF-beta1(+) and IL-10(+) T cells was found to be independent of natural CD4(+)CD25(+) regulatory T cells, demonstrating that preferential ligation of CTLA-4 by CD80 induced IL-10 production by effector T cells, which in turn promoted the secretion of TGF-beta1.
6201 18453575 Treatment of prediabetic NOD mice with islet beta cell Ag-pulsed CD86(-/-) DCs, but not CD80(-/-) DCs, resulted in the induction of TGF-beta1- and IL-10-producing cells, significant suppression of insulitis, and delay of the onset of hyperglycemia.
6202 18453575 These observations demonstrate not only that CD80 preferentially binds to CTLA-4 but also that interaction during Ag presentation can result in IL-10-dependent TGF-beta1(+) regulatory T cell induction, reinstating the potential of approaches to preferentially engage CTLA-4 through CD80 during self-Ag presentation in suppressing autoimmunity.
6203 18465023 Cooperation of invariant NKT cells and CD4+CD25+ T regulatory cells in prevention of autoimmune diabetes in non-obese diabetic mice treated with alpha-galactosylceramide.
6204 18465023 CD1d-restricted natural killer T (NKT) cells and CD4+CD25+ regulatory T (Treg) cells are two thymus-derived subsets of regulatory T cells that play an important role in the maintenance of self-tolerance.
6205 18465023 Yet the functional changes of the two subsets of regulatory T cells in the development of diabetes in non-obese diabetic (NOD) mice remain unclear, and how NKT cells and CD4+CD25+ Treg cells cooperate functionally in the regulation of autoimmune diabetes is also uncertain.
6206 18465023 We provide evidence that in NOD mice, an animal model of human type 1 diabetes, the functions of both NKT cells and CD4+CD25+ Treg cells decrease in an age-dependent manner.
6207 18465023 We show that treatment with alpha-galactosylceramide increases the size of the CD4+CD25+ Treg cell compartment in NOD mice, and augments the expression of forkhead/winged helix transcription factor and the potency of CD4+CD25+ Treg cells to inhibit proliferation of CD4+CD25- T cells.
6208 18465023 Our data indicate that NKT cells and CD4+CD25+ Treg cells might cooperate in the prevention of autoimmune diabetes in NOD mice treated with alpha-galactosylceramide.
6209 18465023 Induced cooperation of NKT cells and CD4+CD25+ Treg cells could serve as a strategy to treat human autoimmune disease, such as type 1 diabetes.
6210 18465023 Cooperation of invariant NKT cells and CD4+CD25+ T regulatory cells in prevention of autoimmune diabetes in non-obese diabetic mice treated with alpha-galactosylceramide.
6211 18465023 CD1d-restricted natural killer T (NKT) cells and CD4+CD25+ regulatory T (Treg) cells are two thymus-derived subsets of regulatory T cells that play an important role in the maintenance of self-tolerance.
6212 18465023 Yet the functional changes of the two subsets of regulatory T cells in the development of diabetes in non-obese diabetic (NOD) mice remain unclear, and how NKT cells and CD4+CD25+ Treg cells cooperate functionally in the regulation of autoimmune diabetes is also uncertain.
6213 18465023 We provide evidence that in NOD mice, an animal model of human type 1 diabetes, the functions of both NKT cells and CD4+CD25+ Treg cells decrease in an age-dependent manner.
6214 18465023 We show that treatment with alpha-galactosylceramide increases the size of the CD4+CD25+ Treg cell compartment in NOD mice, and augments the expression of forkhead/winged helix transcription factor and the potency of CD4+CD25+ Treg cells to inhibit proliferation of CD4+CD25- T cells.
6215 18465023 Our data indicate that NKT cells and CD4+CD25+ Treg cells might cooperate in the prevention of autoimmune diabetes in NOD mice treated with alpha-galactosylceramide.
6216 18465023 Induced cooperation of NKT cells and CD4+CD25+ Treg cells could serve as a strategy to treat human autoimmune disease, such as type 1 diabetes.
6217 18465023 Cooperation of invariant NKT cells and CD4+CD25+ T regulatory cells in prevention of autoimmune diabetes in non-obese diabetic mice treated with alpha-galactosylceramide.
6218 18465023 CD1d-restricted natural killer T (NKT) cells and CD4+CD25+ regulatory T (Treg) cells are two thymus-derived subsets of regulatory T cells that play an important role in the maintenance of self-tolerance.
6219 18465023 Yet the functional changes of the two subsets of regulatory T cells in the development of diabetes in non-obese diabetic (NOD) mice remain unclear, and how NKT cells and CD4+CD25+ Treg cells cooperate functionally in the regulation of autoimmune diabetes is also uncertain.
6220 18465023 We provide evidence that in NOD mice, an animal model of human type 1 diabetes, the functions of both NKT cells and CD4+CD25+ Treg cells decrease in an age-dependent manner.
6221 18465023 We show that treatment with alpha-galactosylceramide increases the size of the CD4+CD25+ Treg cell compartment in NOD mice, and augments the expression of forkhead/winged helix transcription factor and the potency of CD4+CD25+ Treg cells to inhibit proliferation of CD4+CD25- T cells.
6222 18465023 Our data indicate that NKT cells and CD4+CD25+ Treg cells might cooperate in the prevention of autoimmune diabetes in NOD mice treated with alpha-galactosylceramide.
6223 18465023 Induced cooperation of NKT cells and CD4+CD25+ Treg cells could serve as a strategy to treat human autoimmune disease, such as type 1 diabetes.
6224 18465023 Cooperation of invariant NKT cells and CD4+CD25+ T regulatory cells in prevention of autoimmune diabetes in non-obese diabetic mice treated with alpha-galactosylceramide.
6225 18465023 CD1d-restricted natural killer T (NKT) cells and CD4+CD25+ regulatory T (Treg) cells are two thymus-derived subsets of regulatory T cells that play an important role in the maintenance of self-tolerance.
6226 18465023 Yet the functional changes of the two subsets of regulatory T cells in the development of diabetes in non-obese diabetic (NOD) mice remain unclear, and how NKT cells and CD4+CD25+ Treg cells cooperate functionally in the regulation of autoimmune diabetes is also uncertain.
6227 18465023 We provide evidence that in NOD mice, an animal model of human type 1 diabetes, the functions of both NKT cells and CD4+CD25+ Treg cells decrease in an age-dependent manner.
6228 18465023 We show that treatment with alpha-galactosylceramide increases the size of the CD4+CD25+ Treg cell compartment in NOD mice, and augments the expression of forkhead/winged helix transcription factor and the potency of CD4+CD25+ Treg cells to inhibit proliferation of CD4+CD25- T cells.
6229 18465023 Our data indicate that NKT cells and CD4+CD25+ Treg cells might cooperate in the prevention of autoimmune diabetes in NOD mice treated with alpha-galactosylceramide.
6230 18465023 Induced cooperation of NKT cells and CD4+CD25+ Treg cells could serve as a strategy to treat human autoimmune disease, such as type 1 diabetes.
6231 18465023 Cooperation of invariant NKT cells and CD4+CD25+ T regulatory cells in prevention of autoimmune diabetes in non-obese diabetic mice treated with alpha-galactosylceramide.
6232 18465023 CD1d-restricted natural killer T (NKT) cells and CD4+CD25+ regulatory T (Treg) cells are two thymus-derived subsets of regulatory T cells that play an important role in the maintenance of self-tolerance.
6233 18465023 Yet the functional changes of the two subsets of regulatory T cells in the development of diabetes in non-obese diabetic (NOD) mice remain unclear, and how NKT cells and CD4+CD25+ Treg cells cooperate functionally in the regulation of autoimmune diabetes is also uncertain.
6234 18465023 We provide evidence that in NOD mice, an animal model of human type 1 diabetes, the functions of both NKT cells and CD4+CD25+ Treg cells decrease in an age-dependent manner.
6235 18465023 We show that treatment with alpha-galactosylceramide increases the size of the CD4+CD25+ Treg cell compartment in NOD mice, and augments the expression of forkhead/winged helix transcription factor and the potency of CD4+CD25+ Treg cells to inhibit proliferation of CD4+CD25- T cells.
6236 18465023 Our data indicate that NKT cells and CD4+CD25+ Treg cells might cooperate in the prevention of autoimmune diabetes in NOD mice treated with alpha-galactosylceramide.
6237 18465023 Induced cooperation of NKT cells and CD4+CD25+ Treg cells could serve as a strategy to treat human autoimmune disease, such as type 1 diabetes.
6238 18465023 Cooperation of invariant NKT cells and CD4+CD25+ T regulatory cells in prevention of autoimmune diabetes in non-obese diabetic mice treated with alpha-galactosylceramide.
6239 18465023 CD1d-restricted natural killer T (NKT) cells and CD4+CD25+ regulatory T (Treg) cells are two thymus-derived subsets of regulatory T cells that play an important role in the maintenance of self-tolerance.
6240 18465023 Yet the functional changes of the two subsets of regulatory T cells in the development of diabetes in non-obese diabetic (NOD) mice remain unclear, and how NKT cells and CD4+CD25+ Treg cells cooperate functionally in the regulation of autoimmune diabetes is also uncertain.
6241 18465023 We provide evidence that in NOD mice, an animal model of human type 1 diabetes, the functions of both NKT cells and CD4+CD25+ Treg cells decrease in an age-dependent manner.
6242 18465023 We show that treatment with alpha-galactosylceramide increases the size of the CD4+CD25+ Treg cell compartment in NOD mice, and augments the expression of forkhead/winged helix transcription factor and the potency of CD4+CD25+ Treg cells to inhibit proliferation of CD4+CD25- T cells.
6243 18465023 Our data indicate that NKT cells and CD4+CD25+ Treg cells might cooperate in the prevention of autoimmune diabetes in NOD mice treated with alpha-galactosylceramide.
6244 18465023 Induced cooperation of NKT cells and CD4+CD25+ Treg cells could serve as a strategy to treat human autoimmune disease, such as type 1 diabetes.
6245 18465023 Cooperation of invariant NKT cells and CD4+CD25+ T regulatory cells in prevention of autoimmune diabetes in non-obese diabetic mice treated with alpha-galactosylceramide.
6246 18465023 CD1d-restricted natural killer T (NKT) cells and CD4+CD25+ regulatory T (Treg) cells are two thymus-derived subsets of regulatory T cells that play an important role in the maintenance of self-tolerance.
6247 18465023 Yet the functional changes of the two subsets of regulatory T cells in the development of diabetes in non-obese diabetic (NOD) mice remain unclear, and how NKT cells and CD4+CD25+ Treg cells cooperate functionally in the regulation of autoimmune diabetes is also uncertain.
6248 18465023 We provide evidence that in NOD mice, an animal model of human type 1 diabetes, the functions of both NKT cells and CD4+CD25+ Treg cells decrease in an age-dependent manner.
6249 18465023 We show that treatment with alpha-galactosylceramide increases the size of the CD4+CD25+ Treg cell compartment in NOD mice, and augments the expression of forkhead/winged helix transcription factor and the potency of CD4+CD25+ Treg cells to inhibit proliferation of CD4+CD25- T cells.
6250 18465023 Our data indicate that NKT cells and CD4+CD25+ Treg cells might cooperate in the prevention of autoimmune diabetes in NOD mice treated with alpha-galactosylceramide.
6251 18465023 Induced cooperation of NKT cells and CD4+CD25+ Treg cells could serve as a strategy to treat human autoimmune disease, such as type 1 diabetes.
6252 18468463 The dynamics of CD4(+) effector T cells (Teff cells) and CD4(+)Foxp3(+) regulatory T cells (Treg cells) during diabetes progression in nonobese diabetic mice was investigated to determine whether an imbalance of Treg cells and Teff cells contributes to the development of type 1 diabetes.
6253 18468463 Intra-islet Treg cells expressed reduced amounts of CD25 and Bcl-2, suggesting that their decline was due to increased apoptosis.
6254 18469093 Disruption of the homeostatic balance between autoaggressive (CD4+CD40+) and regulatory (CD4+CD25+FoxP3+) T cells promotes diabetes.
6255 18469093 Importantly, these cells are present in pancreata of prediabetic and diabetic NOD mice, and Th40 cells but not CD4+CD40(-) T cells transfer progressive insulitis and diabetes to NOD.scid recipients.
6256 18469093 NOD mice have statistically equal numbers of CD4+CD25+forkhead box P3+intrinsic Tregs compared with NOR or nonautoimmune BALB/c mice, and NOD Tregs are equally as suppressive as NOR Tregs.
6257 18469093 CD40 engagement of Th40 cells induces Fas expression but further confers resistance to Fas-mediated cell death in NOD mice.
6258 18469093 Disruption of the homeostatic balance between autoaggressive (CD4+CD40+) and regulatory (CD4+CD25+FoxP3+) T cells promotes diabetes.
6259 18469093 Importantly, these cells are present in pancreata of prediabetic and diabetic NOD mice, and Th40 cells but not CD4+CD40(-) T cells transfer progressive insulitis and diabetes to NOD.scid recipients.
6260 18469093 NOD mice have statistically equal numbers of CD4+CD25+forkhead box P3+intrinsic Tregs compared with NOR or nonautoimmune BALB/c mice, and NOD Tregs are equally as suppressive as NOR Tregs.
6261 18469093 CD40 engagement of Th40 cells induces Fas expression but further confers resistance to Fas-mediated cell death in NOD mice.
6262 18469093 Disruption of the homeostatic balance between autoaggressive (CD4+CD40+) and regulatory (CD4+CD25+FoxP3+) T cells promotes diabetes.
6263 18469093 Importantly, these cells are present in pancreata of prediabetic and diabetic NOD mice, and Th40 cells but not CD4+CD40(-) T cells transfer progressive insulitis and diabetes to NOD.scid recipients.
6264 18469093 NOD mice have statistically equal numbers of CD4+CD25+forkhead box P3+intrinsic Tregs compared with NOR or nonautoimmune BALB/c mice, and NOD Tregs are equally as suppressive as NOR Tregs.
6265 18469093 CD40 engagement of Th40 cells induces Fas expression but further confers resistance to Fas-mediated cell death in NOD mice.
6266 18482207 Indeed, mTEC have been found to express promiscuous self-antigens, used directly or through thymic dendritic cells to drive either negative selection of insulin-reacting precursors or their differentiation into naturally occurring regulatory Foxp3+ CD4+ CD25+ T cells.
6267 18482207 In the periphery, naturally occurring Foxp3+ CD4+ CD25+regulatory T (Treg) cells represent the master cells in dominant peripheral T-cell tolerance.
6268 18482207 The development and function of Treg cells are ultimately linked to IL-2 and Foxp3 expression.
6269 18482207 Indeed, mTEC have been found to express promiscuous self-antigens, used directly or through thymic dendritic cells to drive either negative selection of insulin-reacting precursors or their differentiation into naturally occurring regulatory Foxp3+ CD4+ CD25+ T cells.
6270 18482207 In the periphery, naturally occurring Foxp3+ CD4+ CD25+regulatory T (Treg) cells represent the master cells in dominant peripheral T-cell tolerance.
6271 18482207 The development and function of Treg cells are ultimately linked to IL-2 and Foxp3 expression.
6272 18523243 NOD mouse AIP was associated with severe periductal and parenchymal inflammation of the exocrine pancreas by CD4(+) T cells, CD8(+) T cells, and B cells.
6273 18550852 In vivo-activated CD103+CD4+ regulatory T cells ameliorate ongoing chronic graft-versus-host disease.
6274 18550852 CD103 (alphaEbeta7) has been shown to be an excellent marker for identifying in vivo-activated FoxP3(+)CD4(+) regulatory T (Treg) cells.
6275 18550852 In vivo-activated CD103+CD4+ regulatory T cells ameliorate ongoing chronic graft-versus-host disease.
6276 18550852 CD103 (alphaEbeta7) has been shown to be an excellent marker for identifying in vivo-activated FoxP3(+)CD4(+) regulatory T (Treg) cells.
6277 18560422 Moreover, expression of mIL-4 also maintained the level of CD4(+)CD25(+)FoxP3(+) cells, and adoptive transfer of splenocytes from nondiabetic dsAAV8-mIP-IL-4 mice to NODscid mice was able to block the diabetes induced by splenocytes co-adoptively transferred from nondiabetic dsAAV-mIP-eGFP mice.
6278 18566388 A function for IL-7R for CD4+CD25+Foxp3+ T regulatory cells.
6279 18566388 The IL-2/IL-2R interaction is important for development and peripheral homeostasis of T regulatory (Treg) cells.
6280 18566388 IL-2- and IL-2R-deficient mice are not completely devoid of Foxp3+ cells, but rather lack population of mature CD4+CD25+Foxp3high Treg cells and contain few immature CD4+CD25-Foxp3low T cells.
6281 18566388 Therefore, other gammac-cytokine(s) must be critically important during thymic development of CD4+CD25+Foxp3+ Treg cells apart from the IL-2.
6282 18566388 The present study was undertaken to determine whether the gammac-cytokines IL-7 or IL-15 normally contribute to expression of Foxp3 and Treg cell production.
6283 18566388 These studies revealed that mice double deficient in IL-2Rbeta and IL-7Ralpha contained a striking lack in the CD4+Foxp3+ population and the Treg cell defect recapitulated the gammac knockout mice.
6284 18566388 In the absence of IL-7R signaling, IL-15/IL-15R interaction is dispensable for the production of CD4+CD25+Foxp3+ Treg cells, indicating that normal thymic Treg cell production likely depends on signaling through both IL-2 and IL-7 receptors.
6285 18566388 Selective thymic reconstitution of IL-2Rbeta in mice double deficient in IL-2Rbeta and IL-7Ralpha established that IL-2Rbeta is dominant and sufficient to restore production of Treg cells.
6286 18566388 A function for IL-7R for CD4+CD25+Foxp3+ T regulatory cells.
6287 18566388 The IL-2/IL-2R interaction is important for development and peripheral homeostasis of T regulatory (Treg) cells.
6288 18566388 IL-2- and IL-2R-deficient mice are not completely devoid of Foxp3+ cells, but rather lack population of mature CD4+CD25+Foxp3high Treg cells and contain few immature CD4+CD25-Foxp3low T cells.
6289 18566388 Therefore, other gammac-cytokine(s) must be critically important during thymic development of CD4+CD25+Foxp3+ Treg cells apart from the IL-2.
6290 18566388 The present study was undertaken to determine whether the gammac-cytokines IL-7 or IL-15 normally contribute to expression of Foxp3 and Treg cell production.
6291 18566388 These studies revealed that mice double deficient in IL-2Rbeta and IL-7Ralpha contained a striking lack in the CD4+Foxp3+ population and the Treg cell defect recapitulated the gammac knockout mice.
6292 18566388 In the absence of IL-7R signaling, IL-15/IL-15R interaction is dispensable for the production of CD4+CD25+Foxp3+ Treg cells, indicating that normal thymic Treg cell production likely depends on signaling through both IL-2 and IL-7 receptors.
6293 18566388 Selective thymic reconstitution of IL-2Rbeta in mice double deficient in IL-2Rbeta and IL-7Ralpha established that IL-2Rbeta is dominant and sufficient to restore production of Treg cells.
6294 18566388 A function for IL-7R for CD4+CD25+Foxp3+ T regulatory cells.
6295 18566388 The IL-2/IL-2R interaction is important for development and peripheral homeostasis of T regulatory (Treg) cells.
6296 18566388 IL-2- and IL-2R-deficient mice are not completely devoid of Foxp3+ cells, but rather lack population of mature CD4+CD25+Foxp3high Treg cells and contain few immature CD4+CD25-Foxp3low T cells.
6297 18566388 Therefore, other gammac-cytokine(s) must be critically important during thymic development of CD4+CD25+Foxp3+ Treg cells apart from the IL-2.
6298 18566388 The present study was undertaken to determine whether the gammac-cytokines IL-7 or IL-15 normally contribute to expression of Foxp3 and Treg cell production.
6299 18566388 These studies revealed that mice double deficient in IL-2Rbeta and IL-7Ralpha contained a striking lack in the CD4+Foxp3+ population and the Treg cell defect recapitulated the gammac knockout mice.
6300 18566388 In the absence of IL-7R signaling, IL-15/IL-15R interaction is dispensable for the production of CD4+CD25+Foxp3+ Treg cells, indicating that normal thymic Treg cell production likely depends on signaling through both IL-2 and IL-7 receptors.
6301 18566388 Selective thymic reconstitution of IL-2Rbeta in mice double deficient in IL-2Rbeta and IL-7Ralpha established that IL-2Rbeta is dominant and sufficient to restore production of Treg cells.
6302 18566388 A function for IL-7R for CD4+CD25+Foxp3+ T regulatory cells.
6303 18566388 The IL-2/IL-2R interaction is important for development and peripheral homeostasis of T regulatory (Treg) cells.
6304 18566388 IL-2- and IL-2R-deficient mice are not completely devoid of Foxp3+ cells, but rather lack population of mature CD4+CD25+Foxp3high Treg cells and contain few immature CD4+CD25-Foxp3low T cells.
6305 18566388 Therefore, other gammac-cytokine(s) must be critically important during thymic development of CD4+CD25+Foxp3+ Treg cells apart from the IL-2.
6306 18566388 The present study was undertaken to determine whether the gammac-cytokines IL-7 or IL-15 normally contribute to expression of Foxp3 and Treg cell production.
6307 18566388 These studies revealed that mice double deficient in IL-2Rbeta and IL-7Ralpha contained a striking lack in the CD4+Foxp3+ population and the Treg cell defect recapitulated the gammac knockout mice.
6308 18566388 In the absence of IL-7R signaling, IL-15/IL-15R interaction is dispensable for the production of CD4+CD25+Foxp3+ Treg cells, indicating that normal thymic Treg cell production likely depends on signaling through both IL-2 and IL-7 receptors.
6309 18566388 Selective thymic reconstitution of IL-2Rbeta in mice double deficient in IL-2Rbeta and IL-7Ralpha established that IL-2Rbeta is dominant and sufficient to restore production of Treg cells.
6310 18566388 A function for IL-7R for CD4+CD25+Foxp3+ T regulatory cells.
6311 18566388 The IL-2/IL-2R interaction is important for development and peripheral homeostasis of T regulatory (Treg) cells.
6312 18566388 IL-2- and IL-2R-deficient mice are not completely devoid of Foxp3+ cells, but rather lack population of mature CD4+CD25+Foxp3high Treg cells and contain few immature CD4+CD25-Foxp3low T cells.
6313 18566388 Therefore, other gammac-cytokine(s) must be critically important during thymic development of CD4+CD25+Foxp3+ Treg cells apart from the IL-2.
6314 18566388 The present study was undertaken to determine whether the gammac-cytokines IL-7 or IL-15 normally contribute to expression of Foxp3 and Treg cell production.
6315 18566388 These studies revealed that mice double deficient in IL-2Rbeta and IL-7Ralpha contained a striking lack in the CD4+Foxp3+ population and the Treg cell defect recapitulated the gammac knockout mice.
6316 18566388 In the absence of IL-7R signaling, IL-15/IL-15R interaction is dispensable for the production of CD4+CD25+Foxp3+ Treg cells, indicating that normal thymic Treg cell production likely depends on signaling through both IL-2 and IL-7 receptors.
6317 18566388 Selective thymic reconstitution of IL-2Rbeta in mice double deficient in IL-2Rbeta and IL-7Ralpha established that IL-2Rbeta is dominant and sufficient to restore production of Treg cells.
6318 18599122 Diabetes is not prevented by Foxp3-transduced CD4(+)T cells under the IL-12Rbeta2 promoter control.
6319 18599122 Our previous studies have shown that Foxp3 under the control of IFN-gamma promoter (IgammaP-Foxp3) converts pathogenic CD4(+)Th1 cells into regulatory T cells (Tregs), which control diabetes in non-obese diabetic (NOD) mice.
6320 18599122 Foxp3, under the control of IL-12Rbeta2 promoter (Ibeta2P), was lentivirally transduced into naïve CD4(+)T cells from NOD mice.
6321 18599122 Furthermore, we found that Ibeta2P-Foxp3-transduced CD4(+)T cells, stimulated by a high dose of autoantigen, did not suppress CD4(+)T cell activation, produce CD4(+)Foxp3(+)Tregs, and up-regulate CTLA4 expression.
6322 18599122 Diabetes is not prevented by Foxp3-transduced CD4(+)T cells under the IL-12Rbeta2 promoter control.
6323 18599122 Our previous studies have shown that Foxp3 under the control of IFN-gamma promoter (IgammaP-Foxp3) converts pathogenic CD4(+)Th1 cells into regulatory T cells (Tregs), which control diabetes in non-obese diabetic (NOD) mice.
6324 18599122 Foxp3, under the control of IL-12Rbeta2 promoter (Ibeta2P), was lentivirally transduced into naïve CD4(+)T cells from NOD mice.
6325 18599122 Furthermore, we found that Ibeta2P-Foxp3-transduced CD4(+)T cells, stimulated by a high dose of autoantigen, did not suppress CD4(+)T cell activation, produce CD4(+)Foxp3(+)Tregs, and up-regulate CTLA4 expression.
6326 18599122 Diabetes is not prevented by Foxp3-transduced CD4(+)T cells under the IL-12Rbeta2 promoter control.
6327 18599122 Our previous studies have shown that Foxp3 under the control of IFN-gamma promoter (IgammaP-Foxp3) converts pathogenic CD4(+)Th1 cells into regulatory T cells (Tregs), which control diabetes in non-obese diabetic (NOD) mice.
6328 18599122 Foxp3, under the control of IL-12Rbeta2 promoter (Ibeta2P), was lentivirally transduced into naïve CD4(+)T cells from NOD mice.
6329 18599122 Furthermore, we found that Ibeta2P-Foxp3-transduced CD4(+)T cells, stimulated by a high dose of autoantigen, did not suppress CD4(+)T cell activation, produce CD4(+)Foxp3(+)Tregs, and up-regulate CTLA4 expression.
6330 18599122 Diabetes is not prevented by Foxp3-transduced CD4(+)T cells under the IL-12Rbeta2 promoter control.
6331 18599122 Our previous studies have shown that Foxp3 under the control of IFN-gamma promoter (IgammaP-Foxp3) converts pathogenic CD4(+)Th1 cells into regulatory T cells (Tregs), which control diabetes in non-obese diabetic (NOD) mice.
6332 18599122 Foxp3, under the control of IL-12Rbeta2 promoter (Ibeta2P), was lentivirally transduced into naïve CD4(+)T cells from NOD mice.
6333 18599122 Furthermore, we found that Ibeta2P-Foxp3-transduced CD4(+)T cells, stimulated by a high dose of autoantigen, did not suppress CD4(+)T cell activation, produce CD4(+)Foxp3(+)Tregs, and up-regulate CTLA4 expression.
6334 18675407 After TGF-beta blockade, CD4+ T cells differentiated along a route favoring development of Th17, but not Treg cells.
6335 18675592 Whereas intramuscular injection of pGAD65 promoted a predominant type 1 CD4(+) T cell response and failed to suppress ongoing beta cell autoimmunity, gene gun vaccination preferentially induced IL-4 secreting CD4(+) T cells and significantly delayed the onset of diabetes.
6336 18708940 Subcutaneous panniculitis-like T-cell lymphoma (SPTL) is defined as a rare cytotoxic alpha/beta T-cell lymphoma characterized by primary involvement of subcutaneous tissue mimicking panniculitis and a predominant CD3+/CD4-/CD8+ phenotype in 2005 World Health Organization-European Organization for Research and Treatment of Cancer (WHO-EORTC) classification for cutaneous lymphomas.
6337 18708940 Besides the common features described before, unusual CD4+/CD8- and CD4-/CD8- T-cell phenotypes were noted in 2 of our cases, respectively.
6338 18708940 The frequency of rearranged TCRB, TCRG, and TCRD genes detected by BIOMED-2 multiplex polymerase chain reaction tubes was 80%, 67%, and 13%, respectively, with a total clonality detection rate of 100%.
6339 18708940 We conclude that SPTL as a cytotoxic lymphoma derived from alpha/beta T cell has a predominant CD4-/CD8+ phenotype, but unusual CD4+/CD8- and CD4-/CD8- phenotypes do exist.
6340 18708940 Subcutaneous panniculitis-like T-cell lymphoma (SPTL) is defined as a rare cytotoxic alpha/beta T-cell lymphoma characterized by primary involvement of subcutaneous tissue mimicking panniculitis and a predominant CD3+/CD4-/CD8+ phenotype in 2005 World Health Organization-European Organization for Research and Treatment of Cancer (WHO-EORTC) classification for cutaneous lymphomas.
6341 18708940 Besides the common features described before, unusual CD4+/CD8- and CD4-/CD8- T-cell phenotypes were noted in 2 of our cases, respectively.
6342 18708940 The frequency of rearranged TCRB, TCRG, and TCRD genes detected by BIOMED-2 multiplex polymerase chain reaction tubes was 80%, 67%, and 13%, respectively, with a total clonality detection rate of 100%.
6343 18708940 We conclude that SPTL as a cytotoxic lymphoma derived from alpha/beta T cell has a predominant CD4-/CD8+ phenotype, but unusual CD4+/CD8- and CD4-/CD8- phenotypes do exist.
6344 18708940 Subcutaneous panniculitis-like T-cell lymphoma (SPTL) is defined as a rare cytotoxic alpha/beta T-cell lymphoma characterized by primary involvement of subcutaneous tissue mimicking panniculitis and a predominant CD3+/CD4-/CD8+ phenotype in 2005 World Health Organization-European Organization for Research and Treatment of Cancer (WHO-EORTC) classification for cutaneous lymphomas.
6345 18708940 Besides the common features described before, unusual CD4+/CD8- and CD4-/CD8- T-cell phenotypes were noted in 2 of our cases, respectively.
6346 18708940 The frequency of rearranged TCRB, TCRG, and TCRD genes detected by BIOMED-2 multiplex polymerase chain reaction tubes was 80%, 67%, and 13%, respectively, with a total clonality detection rate of 100%.
6347 18708940 We conclude that SPTL as a cytotoxic lymphoma derived from alpha/beta T cell has a predominant CD4-/CD8+ phenotype, but unusual CD4+/CD8- and CD4-/CD8- phenotypes do exist.
6348 18716002 Moreover, blockade of IFN-alpha receptor 1 in NOD mice by a neutralizing antibody at 2-3 weeks of age significantly delayed the onset and decreased the incidence of type 1 diabetes, increased the relative number of immature dendritic cells in the PLNs, and enhanced the ability of spleen CD4(+) T cells to produce IL-4 and IL-10.
6349 18755894 We isolated highly pure CD4 or CD8 T cells from patients with type 1 diabetes (n = 675), other AI diseases, and healthy controls (n = 512).
6350 18755894 Using two cell death assays, we found that a subpopulation of CD8, but not CD4, T cells in patients' blood was vulnerable to TNF or TNF agonist-induced death.
6351 18755894 In type 1 diabetes, the subpopulation of T cells susceptible to TNF or TNFR2 agonist-induced death was traced specifically to autoreactive T cells to insulin, a known autoantigen.
6352 18755894 We isolated highly pure CD4 or CD8 T cells from patients with type 1 diabetes (n = 675), other AI diseases, and healthy controls (n = 512).
6353 18755894 Using two cell death assays, we found that a subpopulation of CD8, but not CD4, T cells in patients' blood was vulnerable to TNF or TNF agonist-induced death.
6354 18755894 In type 1 diabetes, the subpopulation of T cells susceptible to TNF or TNFR2 agonist-induced death was traced specifically to autoreactive T cells to insulin, a known autoantigen.
6355 18807145 The Langerhans' cells contained interdigitated nuclei, exhibiting rather clear nucleoplasm and cytoplasm; they were positive for S-100 protein, CD1a, and also CD4.
6356 18825752 Disease progression in experimental autoimmune encephalomyelitis (EAE) is regulated by programmed death receptor 1 (PD-1) and its ligands, B7-H1 (programmed death ligand 1 (PD-L1)) and B7-DC (PD-L2).
6357 18825752 B7-H1 and B7-DC have negative regulatory effects upon binding PD-1 on activated T cells and B7-H1 deficiency increases severity of both diabetes and EAE.
6358 18825752 Our data show that the majority of CNS CD4+ T cells isolated during acute EAE are PD-1+, and T cells specific for relapse-associated epitopes express PD-1 upon antigen stimulation in the CNS.
6359 18825752 B7-H1 and B7-DC are differentially expressed on discrete APC populations in the inflamed CNS.
6360 18825752 B7-H1 and PD-1 have mainly inhibitory functions on CNS T cells.
6361 18825752 B7-H1 negatively regulates the stimulation of activated PD-1+ T(H) cells, in co-cultures with microglia and different CNS-infiltrating APC presenting endogenously processed peptides.
6362 18825752 The preponderance of IFN-gamma+ versus IL-17+ T cells in the CNS of B7-H1(-/-) mice suggests that B7-H1 more selectively suppresses T(H)-1 than T(H)-17 responses in vivo.
6363 18848698 The role of interferon gamma in regulation of CD4+ T-cells and its clinical implications.
6364 18855194 Active CD4+ helper T cells directly stimulate CD8+ cytotoxic T lymphocyte responses in wild-type and MHC II gene knockout C57BL/6 mice and transgenic RIP-mOVA mice expressing islet beta-cell ovalbumin antigen leading to diabetes.
6365 18855194 CD4+ helper T (Th) cells play crucial role in priming, expansion and survival of CD8+ cytotoxic T lymphocytes (CTLs).
6366 18855194 However, how CD4+ Th cell's help is delivered to CD8+ T cells in vivo is still unclear.
6367 18855194 We previously demonstrated that CD4+ Th cells can acquire ovalbumin (OVA) peptide/major histocompatibility complex (pMHC I) and costimulatory CD80 by OVA-pulsed DC (DC(OVA)) stimulation, and then stimulate OVA-specific CD8+ CTL responses in C57BL/6 mice.
6368 18855194 In this study, we further investigated CD4+ Th cell's effect on stimulation of CD8 CTL responses in major histocompatibility complex (MHC II) gene knockout (KO) mice and transgenic rat insulin promoter (RIP)-mOVA mice with moderate expression of self OVA by using CD4+ Th cells or Th cells with various gene deficiency.
6369 18855194 We demonstrated that the in vitro DC(OVA)-activated CD4+ Th cells (3 x 10(6) cells/mouse) can directly stimulate OVA-specific CD8+ T-cell responses in wild-type C57BL/6 mice and MHC II gene KO mice lacking CD4+ T cells.
6370 18855194 A large amount of CD4+ Th cells (12 x 10(6) cells/mouse) can even overcome OVA-specific immune tolerance in transgenic RIP-mOVA mice, leading to CD8+ CTL-mediated mouse pancreatic islet destruction and diabetes.
6371 18855194 The stimulatory effect of CD4+ Th cells is mediated by its IL-2 secretion and CD40L and CD80 costimulations, and is specifically delivered to OVA-specific CD8+ T cells in vivo via its acquired pMHC I complexes.
6372 18855194 Active CD4+ helper T cells directly stimulate CD8+ cytotoxic T lymphocyte responses in wild-type and MHC II gene knockout C57BL/6 mice and transgenic RIP-mOVA mice expressing islet beta-cell ovalbumin antigen leading to diabetes.
6373 18855194 CD4+ helper T (Th) cells play crucial role in priming, expansion and survival of CD8+ cytotoxic T lymphocytes (CTLs).
6374 18855194 However, how CD4+ Th cell's help is delivered to CD8+ T cells in vivo is still unclear.
6375 18855194 We previously demonstrated that CD4+ Th cells can acquire ovalbumin (OVA) peptide/major histocompatibility complex (pMHC I) and costimulatory CD80 by OVA-pulsed DC (DC(OVA)) stimulation, and then stimulate OVA-specific CD8+ CTL responses in C57BL/6 mice.
6376 18855194 In this study, we further investigated CD4+ Th cell's effect on stimulation of CD8 CTL responses in major histocompatibility complex (MHC II) gene knockout (KO) mice and transgenic rat insulin promoter (RIP)-mOVA mice with moderate expression of self OVA by using CD4+ Th cells or Th cells with various gene deficiency.
6377 18855194 We demonstrated that the in vitro DC(OVA)-activated CD4+ Th cells (3 x 10(6) cells/mouse) can directly stimulate OVA-specific CD8+ T-cell responses in wild-type C57BL/6 mice and MHC II gene KO mice lacking CD4+ T cells.
6378 18855194 A large amount of CD4+ Th cells (12 x 10(6) cells/mouse) can even overcome OVA-specific immune tolerance in transgenic RIP-mOVA mice, leading to CD8+ CTL-mediated mouse pancreatic islet destruction and diabetes.
6379 18855194 The stimulatory effect of CD4+ Th cells is mediated by its IL-2 secretion and CD40L and CD80 costimulations, and is specifically delivered to OVA-specific CD8+ T cells in vivo via its acquired pMHC I complexes.
6380 18855194 Active CD4+ helper T cells directly stimulate CD8+ cytotoxic T lymphocyte responses in wild-type and MHC II gene knockout C57BL/6 mice and transgenic RIP-mOVA mice expressing islet beta-cell ovalbumin antigen leading to diabetes.
6381 18855194 CD4+ helper T (Th) cells play crucial role in priming, expansion and survival of CD8+ cytotoxic T lymphocytes (CTLs).
6382 18855194 However, how CD4+ Th cell's help is delivered to CD8+ T cells in vivo is still unclear.
6383 18855194 We previously demonstrated that CD4+ Th cells can acquire ovalbumin (OVA) peptide/major histocompatibility complex (pMHC I) and costimulatory CD80 by OVA-pulsed DC (DC(OVA)) stimulation, and then stimulate OVA-specific CD8+ CTL responses in C57BL/6 mice.
6384 18855194 In this study, we further investigated CD4+ Th cell's effect on stimulation of CD8 CTL responses in major histocompatibility complex (MHC II) gene knockout (KO) mice and transgenic rat insulin promoter (RIP)-mOVA mice with moderate expression of self OVA by using CD4+ Th cells or Th cells with various gene deficiency.
6385 18855194 We demonstrated that the in vitro DC(OVA)-activated CD4+ Th cells (3 x 10(6) cells/mouse) can directly stimulate OVA-specific CD8+ T-cell responses in wild-type C57BL/6 mice and MHC II gene KO mice lacking CD4+ T cells.
6386 18855194 A large amount of CD4+ Th cells (12 x 10(6) cells/mouse) can even overcome OVA-specific immune tolerance in transgenic RIP-mOVA mice, leading to CD8+ CTL-mediated mouse pancreatic islet destruction and diabetes.
6387 18855194 The stimulatory effect of CD4+ Th cells is mediated by its IL-2 secretion and CD40L and CD80 costimulations, and is specifically delivered to OVA-specific CD8+ T cells in vivo via its acquired pMHC I complexes.
6388 18855194 Active CD4+ helper T cells directly stimulate CD8+ cytotoxic T lymphocyte responses in wild-type and MHC II gene knockout C57BL/6 mice and transgenic RIP-mOVA mice expressing islet beta-cell ovalbumin antigen leading to diabetes.
6389 18855194 CD4+ helper T (Th) cells play crucial role in priming, expansion and survival of CD8+ cytotoxic T lymphocytes (CTLs).
6390 18855194 However, how CD4+ Th cell's help is delivered to CD8+ T cells in vivo is still unclear.
6391 18855194 We previously demonstrated that CD4+ Th cells can acquire ovalbumin (OVA) peptide/major histocompatibility complex (pMHC I) and costimulatory CD80 by OVA-pulsed DC (DC(OVA)) stimulation, and then stimulate OVA-specific CD8+ CTL responses in C57BL/6 mice.
6392 18855194 In this study, we further investigated CD4+ Th cell's effect on stimulation of CD8 CTL responses in major histocompatibility complex (MHC II) gene knockout (KO) mice and transgenic rat insulin promoter (RIP)-mOVA mice with moderate expression of self OVA by using CD4+ Th cells or Th cells with various gene deficiency.
6393 18855194 We demonstrated that the in vitro DC(OVA)-activated CD4+ Th cells (3 x 10(6) cells/mouse) can directly stimulate OVA-specific CD8+ T-cell responses in wild-type C57BL/6 mice and MHC II gene KO mice lacking CD4+ T cells.
6394 18855194 A large amount of CD4+ Th cells (12 x 10(6) cells/mouse) can even overcome OVA-specific immune tolerance in transgenic RIP-mOVA mice, leading to CD8+ CTL-mediated mouse pancreatic islet destruction and diabetes.
6395 18855194 The stimulatory effect of CD4+ Th cells is mediated by its IL-2 secretion and CD40L and CD80 costimulations, and is specifically delivered to OVA-specific CD8+ T cells in vivo via its acquired pMHC I complexes.
6396 18855194 Active CD4+ helper T cells directly stimulate CD8+ cytotoxic T lymphocyte responses in wild-type and MHC II gene knockout C57BL/6 mice and transgenic RIP-mOVA mice expressing islet beta-cell ovalbumin antigen leading to diabetes.
6397 18855194 CD4+ helper T (Th) cells play crucial role in priming, expansion and survival of CD8+ cytotoxic T lymphocytes (CTLs).
6398 18855194 However, how CD4+ Th cell's help is delivered to CD8+ T cells in vivo is still unclear.
6399 18855194 We previously demonstrated that CD4+ Th cells can acquire ovalbumin (OVA) peptide/major histocompatibility complex (pMHC I) and costimulatory CD80 by OVA-pulsed DC (DC(OVA)) stimulation, and then stimulate OVA-specific CD8+ CTL responses in C57BL/6 mice.
6400 18855194 In this study, we further investigated CD4+ Th cell's effect on stimulation of CD8 CTL responses in major histocompatibility complex (MHC II) gene knockout (KO) mice and transgenic rat insulin promoter (RIP)-mOVA mice with moderate expression of self OVA by using CD4+ Th cells or Th cells with various gene deficiency.
6401 18855194 We demonstrated that the in vitro DC(OVA)-activated CD4+ Th cells (3 x 10(6) cells/mouse) can directly stimulate OVA-specific CD8+ T-cell responses in wild-type C57BL/6 mice and MHC II gene KO mice lacking CD4+ T cells.
6402 18855194 A large amount of CD4+ Th cells (12 x 10(6) cells/mouse) can even overcome OVA-specific immune tolerance in transgenic RIP-mOVA mice, leading to CD8+ CTL-mediated mouse pancreatic islet destruction and diabetes.
6403 18855194 The stimulatory effect of CD4+ Th cells is mediated by its IL-2 secretion and CD40L and CD80 costimulations, and is specifically delivered to OVA-specific CD8+ T cells in vivo via its acquired pMHC I complexes.
6404 18855194 Active CD4+ helper T cells directly stimulate CD8+ cytotoxic T lymphocyte responses in wild-type and MHC II gene knockout C57BL/6 mice and transgenic RIP-mOVA mice expressing islet beta-cell ovalbumin antigen leading to diabetes.
6405 18855194 CD4+ helper T (Th) cells play crucial role in priming, expansion and survival of CD8+ cytotoxic T lymphocytes (CTLs).
6406 18855194 However, how CD4+ Th cell's help is delivered to CD8+ T cells in vivo is still unclear.
6407 18855194 We previously demonstrated that CD4+ Th cells can acquire ovalbumin (OVA) peptide/major histocompatibility complex (pMHC I) and costimulatory CD80 by OVA-pulsed DC (DC(OVA)) stimulation, and then stimulate OVA-specific CD8+ CTL responses in C57BL/6 mice.
6408 18855194 In this study, we further investigated CD4+ Th cell's effect on stimulation of CD8 CTL responses in major histocompatibility complex (MHC II) gene knockout (KO) mice and transgenic rat insulin promoter (RIP)-mOVA mice with moderate expression of self OVA by using CD4+ Th cells or Th cells with various gene deficiency.
6409 18855194 We demonstrated that the in vitro DC(OVA)-activated CD4+ Th cells (3 x 10(6) cells/mouse) can directly stimulate OVA-specific CD8+ T-cell responses in wild-type C57BL/6 mice and MHC II gene KO mice lacking CD4+ T cells.
6410 18855194 A large amount of CD4+ Th cells (12 x 10(6) cells/mouse) can even overcome OVA-specific immune tolerance in transgenic RIP-mOVA mice, leading to CD8+ CTL-mediated mouse pancreatic islet destruction and diabetes.
6411 18855194 The stimulatory effect of CD4+ Th cells is mediated by its IL-2 secretion and CD40L and CD80 costimulations, and is specifically delivered to OVA-specific CD8+ T cells in vivo via its acquired pMHC I complexes.
6412 18855194 Active CD4+ helper T cells directly stimulate CD8+ cytotoxic T lymphocyte responses in wild-type and MHC II gene knockout C57BL/6 mice and transgenic RIP-mOVA mice expressing islet beta-cell ovalbumin antigen leading to diabetes.
6413 18855194 CD4+ helper T (Th) cells play crucial role in priming, expansion and survival of CD8+ cytotoxic T lymphocytes (CTLs).
6414 18855194 However, how CD4+ Th cell's help is delivered to CD8+ T cells in vivo is still unclear.
6415 18855194 We previously demonstrated that CD4+ Th cells can acquire ovalbumin (OVA) peptide/major histocompatibility complex (pMHC I) and costimulatory CD80 by OVA-pulsed DC (DC(OVA)) stimulation, and then stimulate OVA-specific CD8+ CTL responses in C57BL/6 mice.
6416 18855194 In this study, we further investigated CD4+ Th cell's effect on stimulation of CD8 CTL responses in major histocompatibility complex (MHC II) gene knockout (KO) mice and transgenic rat insulin promoter (RIP)-mOVA mice with moderate expression of self OVA by using CD4+ Th cells or Th cells with various gene deficiency.
6417 18855194 We demonstrated that the in vitro DC(OVA)-activated CD4+ Th cells (3 x 10(6) cells/mouse) can directly stimulate OVA-specific CD8+ T-cell responses in wild-type C57BL/6 mice and MHC II gene KO mice lacking CD4+ T cells.
6418 18855194 A large amount of CD4+ Th cells (12 x 10(6) cells/mouse) can even overcome OVA-specific immune tolerance in transgenic RIP-mOVA mice, leading to CD8+ CTL-mediated mouse pancreatic islet destruction and diabetes.
6419 18855194 The stimulatory effect of CD4+ Th cells is mediated by its IL-2 secretion and CD40L and CD80 costimulations, and is specifically delivered to OVA-specific CD8+ T cells in vivo via its acquired pMHC I complexes.
6420 18855194 Active CD4+ helper T cells directly stimulate CD8+ cytotoxic T lymphocyte responses in wild-type and MHC II gene knockout C57BL/6 mice and transgenic RIP-mOVA mice expressing islet beta-cell ovalbumin antigen leading to diabetes.
6421 18855194 CD4+ helper T (Th) cells play crucial role in priming, expansion and survival of CD8+ cytotoxic T lymphocytes (CTLs).
6422 18855194 However, how CD4+ Th cell's help is delivered to CD8+ T cells in vivo is still unclear.
6423 18855194 We previously demonstrated that CD4+ Th cells can acquire ovalbumin (OVA) peptide/major histocompatibility complex (pMHC I) and costimulatory CD80 by OVA-pulsed DC (DC(OVA)) stimulation, and then stimulate OVA-specific CD8+ CTL responses in C57BL/6 mice.
6424 18855194 In this study, we further investigated CD4+ Th cell's effect on stimulation of CD8 CTL responses in major histocompatibility complex (MHC II) gene knockout (KO) mice and transgenic rat insulin promoter (RIP)-mOVA mice with moderate expression of self OVA by using CD4+ Th cells or Th cells with various gene deficiency.
6425 18855194 We demonstrated that the in vitro DC(OVA)-activated CD4+ Th cells (3 x 10(6) cells/mouse) can directly stimulate OVA-specific CD8+ T-cell responses in wild-type C57BL/6 mice and MHC II gene KO mice lacking CD4+ T cells.
6426 18855194 A large amount of CD4+ Th cells (12 x 10(6) cells/mouse) can even overcome OVA-specific immune tolerance in transgenic RIP-mOVA mice, leading to CD8+ CTL-mediated mouse pancreatic islet destruction and diabetes.
6427 18855194 The stimulatory effect of CD4+ Th cells is mediated by its IL-2 secretion and CD40L and CD80 costimulations, and is specifically delivered to OVA-specific CD8+ T cells in vivo via its acquired pMHC I complexes.
6428 18925576 Increased diabetes development and decreased function of CD4+CD25+ Treg in the absence of a functional DAP12 adaptor protein.
6429 18925576 Transferred BDC2.5 T cells proliferated more efficiently in the PLN of DAP12-deficient B6g7 recipients, which correlated with a decreased impact of co-transferred BDC2.5+CD4+CD25+ T cells.
6430 18925576 Increased diabetes development and decreased function of CD4+CD25+ Treg in the absence of a functional DAP12 adaptor protein.
6431 18925576 Transferred BDC2.5 T cells proliferated more efficiently in the PLN of DAP12-deficient B6g7 recipients, which correlated with a decreased impact of co-transferred BDC2.5+CD4+CD25+ T cells.
6432 18941200 Freshly isolated human islet ECs constitutively expressed CD86 (B7-2) and ICOS ligand but not CD80 (B7-1) or CD40 costimulatory molecules.
6433 18941200 The functional activity of islet EC-expressed CD86 was examined by coculture of resting islet ECs with CD4 T cells stimulated by CD3 ligation alone.
6434 18941200 In keeping with this, adhesion/transmigration of activated (CD3 ligated) memory (CD45R0(+)) CD4 T cells across islet ECs was completely inhibited in the presence of CD86 blocking mAb.
6435 18941200 Identical results were obtained for T cell adhesion using either CTLA-4 blocking mAb or CTLA-4Ig (abatacept), indicating CTLA-4 as the T cell ligand for these CD86-mediated effects.
6436 18941200 These data suggest a novel role for CD86 expression on the microvasculature, whereby ligation of CTLA-4 on CD4 T cells by CD86 on islet ECs is key to the adhesion of recently activated T cells.
6437 18941200 Freshly isolated human islet ECs constitutively expressed CD86 (B7-2) and ICOS ligand but not CD80 (B7-1) or CD40 costimulatory molecules.
6438 18941200 The functional activity of islet EC-expressed CD86 was examined by coculture of resting islet ECs with CD4 T cells stimulated by CD3 ligation alone.
6439 18941200 In keeping with this, adhesion/transmigration of activated (CD3 ligated) memory (CD45R0(+)) CD4 T cells across islet ECs was completely inhibited in the presence of CD86 blocking mAb.
6440 18941200 Identical results were obtained for T cell adhesion using either CTLA-4 blocking mAb or CTLA-4Ig (abatacept), indicating CTLA-4 as the T cell ligand for these CD86-mediated effects.
6441 18941200 These data suggest a novel role for CD86 expression on the microvasculature, whereby ligation of CTLA-4 on CD4 T cells by CD86 on islet ECs is key to the adhesion of recently activated T cells.
6442 18941200 Freshly isolated human islet ECs constitutively expressed CD86 (B7-2) and ICOS ligand but not CD80 (B7-1) or CD40 costimulatory molecules.
6443 18941200 The functional activity of islet EC-expressed CD86 was examined by coculture of resting islet ECs with CD4 T cells stimulated by CD3 ligation alone.
6444 18941200 In keeping with this, adhesion/transmigration of activated (CD3 ligated) memory (CD45R0(+)) CD4 T cells across islet ECs was completely inhibited in the presence of CD86 blocking mAb.
6445 18941200 Identical results were obtained for T cell adhesion using either CTLA-4 blocking mAb or CTLA-4Ig (abatacept), indicating CTLA-4 as the T cell ligand for these CD86-mediated effects.
6446 18941200 These data suggest a novel role for CD86 expression on the microvasculature, whereby ligation of CTLA-4 on CD4 T cells by CD86 on islet ECs is key to the adhesion of recently activated T cells.
6447 18941219 Impact of protective IL-2 allelic variants on CD4+ Foxp3+ regulatory T cell function in situ and resistance to autoimmune diabetes in NOD mice.
6448 18941219 Type I diabetes (T1D) susceptibility is inherited through multiple insulin-dependent diabetes (Idd) genes.
6449 18941219 The protective function of the Idd3 locus is confined to the Il2 gene, whose expression is critical for naturally occurring CD4(+)Foxp3(+) regulatory T (nT(reg)) cell development and function.
6450 18941219 We show that resistance to T1D in NOD.B6 Idd3 congenic mice correlates with increased levels of IL-2 mRNA and protein production in Ag-activated diabetogenic CD4(+) T cells.
6451 18941219 We also observe that protective IL2 allelic variants (Idd3(B6) resistance allele) also favor the expansion and suppressive functions of CD4(+)Foxp3(+) nT(reg) cells in vitro, as well as restrain the proliferation, IL-17 production, and pathogenicity of diabetogenic CD4(+) T cells in vivo more efficiently than control do nT(reg) cells.
6452 18941219 Lastly, the resistance to T1D in Idd3 congenic mice does not correlate with an augmented systemic frequency of CD4(+)Foxp3(+) nT(reg) cells but more so with the ability of protective IL2 allelic variants to promote the expansion of CD4(+)Foxp3(+) nT(reg) cells directly in the target organ undergoing autoimmune attack.
6453 18941219 Thus, protective, IL2 allelic variants impinge the development of organ-specific autoimmunity by bolstering the IL-2 producing capacity of self-reactive CD4(+) T cells and, in turn, favor the function and homeostasis of CD4(+)Foxp3(+) nT(reg) cells in vivo.
6454 18941219 Impact of protective IL-2 allelic variants on CD4+ Foxp3+ regulatory T cell function in situ and resistance to autoimmune diabetes in NOD mice.
6455 18941219 Type I diabetes (T1D) susceptibility is inherited through multiple insulin-dependent diabetes (Idd) genes.
6456 18941219 The protective function of the Idd3 locus is confined to the Il2 gene, whose expression is critical for naturally occurring CD4(+)Foxp3(+) regulatory T (nT(reg)) cell development and function.
6457 18941219 We show that resistance to T1D in NOD.B6 Idd3 congenic mice correlates with increased levels of IL-2 mRNA and protein production in Ag-activated diabetogenic CD4(+) T cells.
6458 18941219 We also observe that protective IL2 allelic variants (Idd3(B6) resistance allele) also favor the expansion and suppressive functions of CD4(+)Foxp3(+) nT(reg) cells in vitro, as well as restrain the proliferation, IL-17 production, and pathogenicity of diabetogenic CD4(+) T cells in vivo more efficiently than control do nT(reg) cells.
6459 18941219 Lastly, the resistance to T1D in Idd3 congenic mice does not correlate with an augmented systemic frequency of CD4(+)Foxp3(+) nT(reg) cells but more so with the ability of protective IL2 allelic variants to promote the expansion of CD4(+)Foxp3(+) nT(reg) cells directly in the target organ undergoing autoimmune attack.
6460 18941219 Thus, protective, IL2 allelic variants impinge the development of organ-specific autoimmunity by bolstering the IL-2 producing capacity of self-reactive CD4(+) T cells and, in turn, favor the function and homeostasis of CD4(+)Foxp3(+) nT(reg) cells in vivo.
6461 18941219 Impact of protective IL-2 allelic variants on CD4+ Foxp3+ regulatory T cell function in situ and resistance to autoimmune diabetes in NOD mice.
6462 18941219 Type I diabetes (T1D) susceptibility is inherited through multiple insulin-dependent diabetes (Idd) genes.
6463 18941219 The protective function of the Idd3 locus is confined to the Il2 gene, whose expression is critical for naturally occurring CD4(+)Foxp3(+) regulatory T (nT(reg)) cell development and function.
6464 18941219 We show that resistance to T1D in NOD.B6 Idd3 congenic mice correlates with increased levels of IL-2 mRNA and protein production in Ag-activated diabetogenic CD4(+) T cells.
6465 18941219 We also observe that protective IL2 allelic variants (Idd3(B6) resistance allele) also favor the expansion and suppressive functions of CD4(+)Foxp3(+) nT(reg) cells in vitro, as well as restrain the proliferation, IL-17 production, and pathogenicity of diabetogenic CD4(+) T cells in vivo more efficiently than control do nT(reg) cells.
6466 18941219 Lastly, the resistance to T1D in Idd3 congenic mice does not correlate with an augmented systemic frequency of CD4(+)Foxp3(+) nT(reg) cells but more so with the ability of protective IL2 allelic variants to promote the expansion of CD4(+)Foxp3(+) nT(reg) cells directly in the target organ undergoing autoimmune attack.
6467 18941219 Thus, protective, IL2 allelic variants impinge the development of organ-specific autoimmunity by bolstering the IL-2 producing capacity of self-reactive CD4(+) T cells and, in turn, favor the function and homeostasis of CD4(+)Foxp3(+) nT(reg) cells in vivo.
6468 18941219 Impact of protective IL-2 allelic variants on CD4+ Foxp3+ regulatory T cell function in situ and resistance to autoimmune diabetes in NOD mice.
6469 18941219 Type I diabetes (T1D) susceptibility is inherited through multiple insulin-dependent diabetes (Idd) genes.
6470 18941219 The protective function of the Idd3 locus is confined to the Il2 gene, whose expression is critical for naturally occurring CD4(+)Foxp3(+) regulatory T (nT(reg)) cell development and function.
6471 18941219 We show that resistance to T1D in NOD.B6 Idd3 congenic mice correlates with increased levels of IL-2 mRNA and protein production in Ag-activated diabetogenic CD4(+) T cells.
6472 18941219 We also observe that protective IL2 allelic variants (Idd3(B6) resistance allele) also favor the expansion and suppressive functions of CD4(+)Foxp3(+) nT(reg) cells in vitro, as well as restrain the proliferation, IL-17 production, and pathogenicity of diabetogenic CD4(+) T cells in vivo more efficiently than control do nT(reg) cells.
6473 18941219 Lastly, the resistance to T1D in Idd3 congenic mice does not correlate with an augmented systemic frequency of CD4(+)Foxp3(+) nT(reg) cells but more so with the ability of protective IL2 allelic variants to promote the expansion of CD4(+)Foxp3(+) nT(reg) cells directly in the target organ undergoing autoimmune attack.
6474 18941219 Thus, protective, IL2 allelic variants impinge the development of organ-specific autoimmunity by bolstering the IL-2 producing capacity of self-reactive CD4(+) T cells and, in turn, favor the function and homeostasis of CD4(+)Foxp3(+) nT(reg) cells in vivo.
6475 18941219 Impact of protective IL-2 allelic variants on CD4+ Foxp3+ regulatory T cell function in situ and resistance to autoimmune diabetes in NOD mice.
6476 18941219 Type I diabetes (T1D) susceptibility is inherited through multiple insulin-dependent diabetes (Idd) genes.
6477 18941219 The protective function of the Idd3 locus is confined to the Il2 gene, whose expression is critical for naturally occurring CD4(+)Foxp3(+) regulatory T (nT(reg)) cell development and function.
6478 18941219 We show that resistance to T1D in NOD.B6 Idd3 congenic mice correlates with increased levels of IL-2 mRNA and protein production in Ag-activated diabetogenic CD4(+) T cells.
6479 18941219 We also observe that protective IL2 allelic variants (Idd3(B6) resistance allele) also favor the expansion and suppressive functions of CD4(+)Foxp3(+) nT(reg) cells in vitro, as well as restrain the proliferation, IL-17 production, and pathogenicity of diabetogenic CD4(+) T cells in vivo more efficiently than control do nT(reg) cells.
6480 18941219 Lastly, the resistance to T1D in Idd3 congenic mice does not correlate with an augmented systemic frequency of CD4(+)Foxp3(+) nT(reg) cells but more so with the ability of protective IL2 allelic variants to promote the expansion of CD4(+)Foxp3(+) nT(reg) cells directly in the target organ undergoing autoimmune attack.
6481 18941219 Thus, protective, IL2 allelic variants impinge the development of organ-specific autoimmunity by bolstering the IL-2 producing capacity of self-reactive CD4(+) T cells and, in turn, favor the function and homeostasis of CD4(+)Foxp3(+) nT(reg) cells in vivo.
6482 18941219 Impact of protective IL-2 allelic variants on CD4+ Foxp3+ regulatory T cell function in situ and resistance to autoimmune diabetes in NOD mice.
6483 18941219 Type I diabetes (T1D) susceptibility is inherited through multiple insulin-dependent diabetes (Idd) genes.
6484 18941219 The protective function of the Idd3 locus is confined to the Il2 gene, whose expression is critical for naturally occurring CD4(+)Foxp3(+) regulatory T (nT(reg)) cell development and function.
6485 18941219 We show that resistance to T1D in NOD.B6 Idd3 congenic mice correlates with increased levels of IL-2 mRNA and protein production in Ag-activated diabetogenic CD4(+) T cells.
6486 18941219 We also observe that protective IL2 allelic variants (Idd3(B6) resistance allele) also favor the expansion and suppressive functions of CD4(+)Foxp3(+) nT(reg) cells in vitro, as well as restrain the proliferation, IL-17 production, and pathogenicity of diabetogenic CD4(+) T cells in vivo more efficiently than control do nT(reg) cells.
6487 18941219 Lastly, the resistance to T1D in Idd3 congenic mice does not correlate with an augmented systemic frequency of CD4(+)Foxp3(+) nT(reg) cells but more so with the ability of protective IL2 allelic variants to promote the expansion of CD4(+)Foxp3(+) nT(reg) cells directly in the target organ undergoing autoimmune attack.
6488 18941219 Thus, protective, IL2 allelic variants impinge the development of organ-specific autoimmunity by bolstering the IL-2 producing capacity of self-reactive CD4(+) T cells and, in turn, favor the function and homeostasis of CD4(+)Foxp3(+) nT(reg) cells in vivo.
6489 18951762 CD40 on NOD CD4 T cells contributes to their activation and pathogenicity.
6490 18951762 Our goals in this study were to investigate conditions under which T cells from NOD mice express CD40 and to determine how CD40 on autoreactive CD4 T cells contributes to their pathogenicity in T1D.
6491 18951762 Using CD40-positive diabetogenic T cell clones and CD4 T cells from NOD mice, we examined expression of CD40 upon activation through the TCR and costimulation through either CD28 or CD40.
6492 18951762 Our results indicate that CD40 expression is increased upon activation with antigen/MHC and that activation of NOD CD4 T cells through TCR/CD40 rapidly induced CD40 expression.
6493 18951762 Furthermore, CD40 costimulation promoted T cell proliferation to the same extent as costimulation through TCR/CD28.
6494 18951762 Importantly, costimulation of CD4 T cells through CD40 also interfered with T cell homeostasis by altering regulation of CTLA-4 expression.
6495 18951762 Thus, costimulation through CD40 on NOD T cells contributes to their pathogenicity by providing additional pathways for activation and by inhibiting upregulation of CTLA-4 during T cell activation.
6496 18951762 CD40 on NOD CD4 T cells contributes to their activation and pathogenicity.
6497 18951762 Our goals in this study were to investigate conditions under which T cells from NOD mice express CD40 and to determine how CD40 on autoreactive CD4 T cells contributes to their pathogenicity in T1D.
6498 18951762 Using CD40-positive diabetogenic T cell clones and CD4 T cells from NOD mice, we examined expression of CD40 upon activation through the TCR and costimulation through either CD28 or CD40.
6499 18951762 Our results indicate that CD40 expression is increased upon activation with antigen/MHC and that activation of NOD CD4 T cells through TCR/CD40 rapidly induced CD40 expression.
6500 18951762 Furthermore, CD40 costimulation promoted T cell proliferation to the same extent as costimulation through TCR/CD28.
6501 18951762 Importantly, costimulation of CD4 T cells through CD40 also interfered with T cell homeostasis by altering regulation of CTLA-4 expression.
6502 18951762 Thus, costimulation through CD40 on NOD T cells contributes to their pathogenicity by providing additional pathways for activation and by inhibiting upregulation of CTLA-4 during T cell activation.
6503 18951762 CD40 on NOD CD4 T cells contributes to their activation and pathogenicity.
6504 18951762 Our goals in this study were to investigate conditions under which T cells from NOD mice express CD40 and to determine how CD40 on autoreactive CD4 T cells contributes to their pathogenicity in T1D.
6505 18951762 Using CD40-positive diabetogenic T cell clones and CD4 T cells from NOD mice, we examined expression of CD40 upon activation through the TCR and costimulation through either CD28 or CD40.
6506 18951762 Our results indicate that CD40 expression is increased upon activation with antigen/MHC and that activation of NOD CD4 T cells through TCR/CD40 rapidly induced CD40 expression.
6507 18951762 Furthermore, CD40 costimulation promoted T cell proliferation to the same extent as costimulation through TCR/CD28.
6508 18951762 Importantly, costimulation of CD4 T cells through CD40 also interfered with T cell homeostasis by altering regulation of CTLA-4 expression.
6509 18951762 Thus, costimulation through CD40 on NOD T cells contributes to their pathogenicity by providing additional pathways for activation and by inhibiting upregulation of CTLA-4 during T cell activation.
6510 18951762 CD40 on NOD CD4 T cells contributes to their activation and pathogenicity.
6511 18951762 Our goals in this study were to investigate conditions under which T cells from NOD mice express CD40 and to determine how CD40 on autoreactive CD4 T cells contributes to their pathogenicity in T1D.
6512 18951762 Using CD40-positive diabetogenic T cell clones and CD4 T cells from NOD mice, we examined expression of CD40 upon activation through the TCR and costimulation through either CD28 or CD40.
6513 18951762 Our results indicate that CD40 expression is increased upon activation with antigen/MHC and that activation of NOD CD4 T cells through TCR/CD40 rapidly induced CD40 expression.
6514 18951762 Furthermore, CD40 costimulation promoted T cell proliferation to the same extent as costimulation through TCR/CD28.
6515 18951762 Importantly, costimulation of CD4 T cells through CD40 also interfered with T cell homeostasis by altering regulation of CTLA-4 expression.
6516 18951762 Thus, costimulation through CD40 on NOD T cells contributes to their pathogenicity by providing additional pathways for activation and by inhibiting upregulation of CTLA-4 during T cell activation.
6517 18951762 CD40 on NOD CD4 T cells contributes to their activation and pathogenicity.
6518 18951762 Our goals in this study were to investigate conditions under which T cells from NOD mice express CD40 and to determine how CD40 on autoreactive CD4 T cells contributes to their pathogenicity in T1D.
6519 18951762 Using CD40-positive diabetogenic T cell clones and CD4 T cells from NOD mice, we examined expression of CD40 upon activation through the TCR and costimulation through either CD28 or CD40.
6520 18951762 Our results indicate that CD40 expression is increased upon activation with antigen/MHC and that activation of NOD CD4 T cells through TCR/CD40 rapidly induced CD40 expression.
6521 18951762 Furthermore, CD40 costimulation promoted T cell proliferation to the same extent as costimulation through TCR/CD28.
6522 18951762 Importantly, costimulation of CD4 T cells through CD40 also interfered with T cell homeostasis by altering regulation of CTLA-4 expression.
6523 18951762 Thus, costimulation through CD40 on NOD T cells contributes to their pathogenicity by providing additional pathways for activation and by inhibiting upregulation of CTLA-4 during T cell activation.
6524 18981116 Furthermore, islet-infiltrating leukocytes in the LTP mice contained Foxp3(+)CD4 T cells.
6525 18981116 The LTP was abolished if mice were treated with either Ab-depleting CD4 T cells or a neutralizing Ab to CTLA-4, in this case, only at a late stage.
6526 18981116 Neutralization of IL-10, TGF-beta, glucocorticoid-induced TNF receptor (GITR), or CD25 had no effect.
6527 18981116 Hence, using monoclonal CD4 T cells, IFN-gamma can have a wide diversity of roles, depending on the setting of the immune process.
6528 18981116 Furthermore, islet-infiltrating leukocytes in the LTP mice contained Foxp3(+)CD4 T cells.
6529 18981116 The LTP was abolished if mice were treated with either Ab-depleting CD4 T cells or a neutralizing Ab to CTLA-4, in this case, only at a late stage.
6530 18981116 Neutralization of IL-10, TGF-beta, glucocorticoid-induced TNF receptor (GITR), or CD25 had no effect.
6531 18981116 Hence, using monoclonal CD4 T cells, IFN-gamma can have a wide diversity of roles, depending on the setting of the immune process.
6532 18981116 Furthermore, islet-infiltrating leukocytes in the LTP mice contained Foxp3(+)CD4 T cells.
6533 18981116 The LTP was abolished if mice were treated with either Ab-depleting CD4 T cells or a neutralizing Ab to CTLA-4, in this case, only at a late stage.
6534 18981116 Neutralization of IL-10, TGF-beta, glucocorticoid-induced TNF receptor (GITR), or CD25 had no effect.
6535 18981116 Hence, using monoclonal CD4 T cells, IFN-gamma can have a wide diversity of roles, depending on the setting of the immune process.
6536 18981158 The effector T cells of diabetic subjects are resistant to regulation via CD4+ FOXP3+ regulatory T cells.
6537 18985367 CD4(+)CD25 (+) regulatory T cells in human lupus erythematosus.
6538 18985367 Natural CD4(+)CD25(+) regulatory T cells (T(reg)) show a potent immunosuppressive function and contribute to immunologic self-tolerance by suppressing potentially auto-reactive T cells.
6539 18985367 For example, aberrant numbers of circulating CD4(+)CD25(+) T(reg) have been seen in patients with type I diabetes, mycosis fungoides, graft-versus-host-reaction, and rheumatoid arthritis.
6540 18985367 Moreover, increased numbers of functionally active CD4(+)CD25(+) T(reg) have been detected in the synovial fluid of patients with rheumatoid arthritis.
6541 18985367 In systemic lupus erythematosus (SLE), conflicting data on the role of CD4(+)CD25(+) T(reg) in human autoimmune diseases have been presented in the literature.
6542 18985367 Decreased numbers of peripheral blood T(reg) have been reported by most studies on SLE patients with active disease, but non-impaired or even increased CD4(+)CD25(+) T(reg) numbers have also been described.
6543 18985367 Analysis of CD4(+)FoxP3(+) T(reg) in skin lesions of patients with a primarily cutaneous manifestation of the disease showed a significant reduction in cell numbers as compared to other inflammatory skin diseases, suggesting the importance of analyzing T(reg) numbers in the affected tissue.
6544 18985367 In this review, we discuss the role of CD4(+)CD25(+) T(reg) in autoimmunity and recent published data on SLE.
6545 18985367 CD4(+)CD25 (+) regulatory T cells in human lupus erythematosus.
6546 18985367 Natural CD4(+)CD25(+) regulatory T cells (T(reg)) show a potent immunosuppressive function and contribute to immunologic self-tolerance by suppressing potentially auto-reactive T cells.
6547 18985367 For example, aberrant numbers of circulating CD4(+)CD25(+) T(reg) have been seen in patients with type I diabetes, mycosis fungoides, graft-versus-host-reaction, and rheumatoid arthritis.
6548 18985367 Moreover, increased numbers of functionally active CD4(+)CD25(+) T(reg) have been detected in the synovial fluid of patients with rheumatoid arthritis.
6549 18985367 In systemic lupus erythematosus (SLE), conflicting data on the role of CD4(+)CD25(+) T(reg) in human autoimmune diseases have been presented in the literature.
6550 18985367 Decreased numbers of peripheral blood T(reg) have been reported by most studies on SLE patients with active disease, but non-impaired or even increased CD4(+)CD25(+) T(reg) numbers have also been described.
6551 18985367 Analysis of CD4(+)FoxP3(+) T(reg) in skin lesions of patients with a primarily cutaneous manifestation of the disease showed a significant reduction in cell numbers as compared to other inflammatory skin diseases, suggesting the importance of analyzing T(reg) numbers in the affected tissue.
6552 18985367 In this review, we discuss the role of CD4(+)CD25(+) T(reg) in autoimmunity and recent published data on SLE.
6553 18985367 CD4(+)CD25 (+) regulatory T cells in human lupus erythematosus.
6554 18985367 Natural CD4(+)CD25(+) regulatory T cells (T(reg)) show a potent immunosuppressive function and contribute to immunologic self-tolerance by suppressing potentially auto-reactive T cells.
6555 18985367 For example, aberrant numbers of circulating CD4(+)CD25(+) T(reg) have been seen in patients with type I diabetes, mycosis fungoides, graft-versus-host-reaction, and rheumatoid arthritis.
6556 18985367 Moreover, increased numbers of functionally active CD4(+)CD25(+) T(reg) have been detected in the synovial fluid of patients with rheumatoid arthritis.
6557 18985367 In systemic lupus erythematosus (SLE), conflicting data on the role of CD4(+)CD25(+) T(reg) in human autoimmune diseases have been presented in the literature.
6558 18985367 Decreased numbers of peripheral blood T(reg) have been reported by most studies on SLE patients with active disease, but non-impaired or even increased CD4(+)CD25(+) T(reg) numbers have also been described.
6559 18985367 Analysis of CD4(+)FoxP3(+) T(reg) in skin lesions of patients with a primarily cutaneous manifestation of the disease showed a significant reduction in cell numbers as compared to other inflammatory skin diseases, suggesting the importance of analyzing T(reg) numbers in the affected tissue.
6560 18985367 In this review, we discuss the role of CD4(+)CD25(+) T(reg) in autoimmunity and recent published data on SLE.
6561 18985367 CD4(+)CD25 (+) regulatory T cells in human lupus erythematosus.
6562 18985367 Natural CD4(+)CD25(+) regulatory T cells (T(reg)) show a potent immunosuppressive function and contribute to immunologic self-tolerance by suppressing potentially auto-reactive T cells.
6563 18985367 For example, aberrant numbers of circulating CD4(+)CD25(+) T(reg) have been seen in patients with type I diabetes, mycosis fungoides, graft-versus-host-reaction, and rheumatoid arthritis.
6564 18985367 Moreover, increased numbers of functionally active CD4(+)CD25(+) T(reg) have been detected in the synovial fluid of patients with rheumatoid arthritis.
6565 18985367 In systemic lupus erythematosus (SLE), conflicting data on the role of CD4(+)CD25(+) T(reg) in human autoimmune diseases have been presented in the literature.
6566 18985367 Decreased numbers of peripheral blood T(reg) have been reported by most studies on SLE patients with active disease, but non-impaired or even increased CD4(+)CD25(+) T(reg) numbers have also been described.
6567 18985367 Analysis of CD4(+)FoxP3(+) T(reg) in skin lesions of patients with a primarily cutaneous manifestation of the disease showed a significant reduction in cell numbers as compared to other inflammatory skin diseases, suggesting the importance of analyzing T(reg) numbers in the affected tissue.
6568 18985367 In this review, we discuss the role of CD4(+)CD25(+) T(reg) in autoimmunity and recent published data on SLE.
6569 18985367 CD4(+)CD25 (+) regulatory T cells in human lupus erythematosus.
6570 18985367 Natural CD4(+)CD25(+) regulatory T cells (T(reg)) show a potent immunosuppressive function and contribute to immunologic self-tolerance by suppressing potentially auto-reactive T cells.
6571 18985367 For example, aberrant numbers of circulating CD4(+)CD25(+) T(reg) have been seen in patients with type I diabetes, mycosis fungoides, graft-versus-host-reaction, and rheumatoid arthritis.
6572 18985367 Moreover, increased numbers of functionally active CD4(+)CD25(+) T(reg) have been detected in the synovial fluid of patients with rheumatoid arthritis.
6573 18985367 In systemic lupus erythematosus (SLE), conflicting data on the role of CD4(+)CD25(+) T(reg) in human autoimmune diseases have been presented in the literature.
6574 18985367 Decreased numbers of peripheral blood T(reg) have been reported by most studies on SLE patients with active disease, but non-impaired or even increased CD4(+)CD25(+) T(reg) numbers have also been described.
6575 18985367 Analysis of CD4(+)FoxP3(+) T(reg) in skin lesions of patients with a primarily cutaneous manifestation of the disease showed a significant reduction in cell numbers as compared to other inflammatory skin diseases, suggesting the importance of analyzing T(reg) numbers in the affected tissue.
6576 18985367 In this review, we discuss the role of CD4(+)CD25(+) T(reg) in autoimmunity and recent published data on SLE.
6577 18985367 CD4(+)CD25 (+) regulatory T cells in human lupus erythematosus.
6578 18985367 Natural CD4(+)CD25(+) regulatory T cells (T(reg)) show a potent immunosuppressive function and contribute to immunologic self-tolerance by suppressing potentially auto-reactive T cells.
6579 18985367 For example, aberrant numbers of circulating CD4(+)CD25(+) T(reg) have been seen in patients with type I diabetes, mycosis fungoides, graft-versus-host-reaction, and rheumatoid arthritis.
6580 18985367 Moreover, increased numbers of functionally active CD4(+)CD25(+) T(reg) have been detected in the synovial fluid of patients with rheumatoid arthritis.
6581 18985367 In systemic lupus erythematosus (SLE), conflicting data on the role of CD4(+)CD25(+) T(reg) in human autoimmune diseases have been presented in the literature.
6582 18985367 Decreased numbers of peripheral blood T(reg) have been reported by most studies on SLE patients with active disease, but non-impaired or even increased CD4(+)CD25(+) T(reg) numbers have also been described.
6583 18985367 Analysis of CD4(+)FoxP3(+) T(reg) in skin lesions of patients with a primarily cutaneous manifestation of the disease showed a significant reduction in cell numbers as compared to other inflammatory skin diseases, suggesting the importance of analyzing T(reg) numbers in the affected tissue.
6584 18985367 In this review, we discuss the role of CD4(+)CD25(+) T(reg) in autoimmunity and recent published data on SLE.
6585 18985367 CD4(+)CD25 (+) regulatory T cells in human lupus erythematosus.
6586 18985367 Natural CD4(+)CD25(+) regulatory T cells (T(reg)) show a potent immunosuppressive function and contribute to immunologic self-tolerance by suppressing potentially auto-reactive T cells.
6587 18985367 For example, aberrant numbers of circulating CD4(+)CD25(+) T(reg) have been seen in patients with type I diabetes, mycosis fungoides, graft-versus-host-reaction, and rheumatoid arthritis.
6588 18985367 Moreover, increased numbers of functionally active CD4(+)CD25(+) T(reg) have been detected in the synovial fluid of patients with rheumatoid arthritis.
6589 18985367 In systemic lupus erythematosus (SLE), conflicting data on the role of CD4(+)CD25(+) T(reg) in human autoimmune diseases have been presented in the literature.
6590 18985367 Decreased numbers of peripheral blood T(reg) have been reported by most studies on SLE patients with active disease, but non-impaired or even increased CD4(+)CD25(+) T(reg) numbers have also been described.
6591 18985367 Analysis of CD4(+)FoxP3(+) T(reg) in skin lesions of patients with a primarily cutaneous manifestation of the disease showed a significant reduction in cell numbers as compared to other inflammatory skin diseases, suggesting the importance of analyzing T(reg) numbers in the affected tissue.
6592 18985367 In this review, we discuss the role of CD4(+)CD25(+) T(reg) in autoimmunity and recent published data on SLE.
6593 18985367 CD4(+)CD25 (+) regulatory T cells in human lupus erythematosus.
6594 18985367 Natural CD4(+)CD25(+) regulatory T cells (T(reg)) show a potent immunosuppressive function and contribute to immunologic self-tolerance by suppressing potentially auto-reactive T cells.
6595 18985367 For example, aberrant numbers of circulating CD4(+)CD25(+) T(reg) have been seen in patients with type I diabetes, mycosis fungoides, graft-versus-host-reaction, and rheumatoid arthritis.
6596 18985367 Moreover, increased numbers of functionally active CD4(+)CD25(+) T(reg) have been detected in the synovial fluid of patients with rheumatoid arthritis.
6597 18985367 In systemic lupus erythematosus (SLE), conflicting data on the role of CD4(+)CD25(+) T(reg) in human autoimmune diseases have been presented in the literature.
6598 18985367 Decreased numbers of peripheral blood T(reg) have been reported by most studies on SLE patients with active disease, but non-impaired or even increased CD4(+)CD25(+) T(reg) numbers have also been described.
6599 18985367 Analysis of CD4(+)FoxP3(+) T(reg) in skin lesions of patients with a primarily cutaneous manifestation of the disease showed a significant reduction in cell numbers as compared to other inflammatory skin diseases, suggesting the importance of analyzing T(reg) numbers in the affected tissue.
6600 18985367 In this review, we discuss the role of CD4(+)CD25(+) T(reg) in autoimmunity and recent published data on SLE.
6601 19006694 CD4(+)Foxp3(+) regulatory T (Treg) cells originate primarily from thymic differentiation, but conversion of mature T lymphocytes to Foxp3 positivity can be elicited by several means, including in vitro activation in the presence of TGF-beta.
6602 19006694 We showed here that, rather than enhancing TGF-beta signaling directly in naive CD4(+) T cells, RA negatively regulated an accompanying population of CD4(+) T cells with a CD44(hi) memory and effector phenotype.
6603 19006694 These memory cells actively inhibited the TGF-beta-induced conversion of naive CD4(+) T cells through the synthesis of a set of cytokines (IL-4, IL-21, IFN-gamma) whose expression was coordinately curtailed by RA.
6604 19006694 CD4(+)Foxp3(+) regulatory T (Treg) cells originate primarily from thymic differentiation, but conversion of mature T lymphocytes to Foxp3 positivity can be elicited by several means, including in vitro activation in the presence of TGF-beta.
6605 19006694 We showed here that, rather than enhancing TGF-beta signaling directly in naive CD4(+) T cells, RA negatively regulated an accompanying population of CD4(+) T cells with a CD44(hi) memory and effector phenotype.
6606 19006694 These memory cells actively inhibited the TGF-beta-induced conversion of naive CD4(+) T cells through the synthesis of a set of cytokines (IL-4, IL-21, IFN-gamma) whose expression was coordinately curtailed by RA.
6607 19006694 CD4(+)Foxp3(+) regulatory T (Treg) cells originate primarily from thymic differentiation, but conversion of mature T lymphocytes to Foxp3 positivity can be elicited by several means, including in vitro activation in the presence of TGF-beta.
6608 19006694 We showed here that, rather than enhancing TGF-beta signaling directly in naive CD4(+) T cells, RA negatively regulated an accompanying population of CD4(+) T cells with a CD44(hi) memory and effector phenotype.
6609 19006694 These memory cells actively inhibited the TGF-beta-induced conversion of naive CD4(+) T cells through the synthesis of a set of cytokines (IL-4, IL-21, IFN-gamma) whose expression was coordinately curtailed by RA.
6610 19008314 Tumor necrosis factor-related apoptosis-inducing ligand inhibits experimental autoimmune thyroiditis by the expansion of CD4+CD25+ regulatory T cells.
6611 19008314 There have been several reports that TNF-related apoptosis-inducing ligand (TRAIL) has the ability to suppress the development of experimental autoimmune diseases, including a mouse model of experimental autoimmune encephalomyelitis, a rabbit model of rheumatoid arthritis, type 1 diabetes mellitus, in mice and experimental autoimmune thyroiditis (EAT) in mice.
6612 19008314 In the present study, we specifically examined TRAIL effects on CD4(+)CD25(+) regulatory T cells.
6613 19008314 CD4(+)CD25(+) T cells prepared from mouse thyroglobulin (mTg)-immunized CBA/J mice proliferate in the presence of TRAIL and dendritic cells in vitro.
6614 19008314 These CD4(+)CD25(+) T cells included both CD4(+)CD25(+)CD45RB(Low) (regulatory) and CD4(+)CD25(+)CD45RB(High) (effector) T cells.
6615 19008314 Our results demonstrated that mTg-immunized mice treated with TRAIL showed significant increases in the number of CD4(+)CD25(+)CD45RB(Low) T cells compared with mice immunized with mTg alone.
6616 19008314 CD4(+)CD25(+)CD45RB(Low) T cells expressed much higher levels of the forkhead family transcription factor, IL-10, and TGFbeta1 than CD4(+)CD25(+)CD45RB(High) T cells, and these cells can completely suppress the proliferation of the mTg-primed splenocytes in lower concentrations than the unfractionated CD4(+)CD25(+) T cells.
6617 19008314 CD4(+)CD25(+)CD45RB(Low) T cells were more effective at suppressing histological thyroiditis than unfractionated cells.
6618 19008314 These results indicated that TRAIL can increase the number of mTg-specific CD4(+)CD25(+)CD45RB(Low) T cells, inhibiting autoimmune responses and preventing the progression of EAT.
6619 19008314 Tumor necrosis factor-related apoptosis-inducing ligand inhibits experimental autoimmune thyroiditis by the expansion of CD4+CD25+ regulatory T cells.
6620 19008314 There have been several reports that TNF-related apoptosis-inducing ligand (TRAIL) has the ability to suppress the development of experimental autoimmune diseases, including a mouse model of experimental autoimmune encephalomyelitis, a rabbit model of rheumatoid arthritis, type 1 diabetes mellitus, in mice and experimental autoimmune thyroiditis (EAT) in mice.
6621 19008314 In the present study, we specifically examined TRAIL effects on CD4(+)CD25(+) regulatory T cells.
6622 19008314 CD4(+)CD25(+) T cells prepared from mouse thyroglobulin (mTg)-immunized CBA/J mice proliferate in the presence of TRAIL and dendritic cells in vitro.
6623 19008314 These CD4(+)CD25(+) T cells included both CD4(+)CD25(+)CD45RB(Low) (regulatory) and CD4(+)CD25(+)CD45RB(High) (effector) T cells.
6624 19008314 Our results demonstrated that mTg-immunized mice treated with TRAIL showed significant increases in the number of CD4(+)CD25(+)CD45RB(Low) T cells compared with mice immunized with mTg alone.
6625 19008314 CD4(+)CD25(+)CD45RB(Low) T cells expressed much higher levels of the forkhead family transcription factor, IL-10, and TGFbeta1 than CD4(+)CD25(+)CD45RB(High) T cells, and these cells can completely suppress the proliferation of the mTg-primed splenocytes in lower concentrations than the unfractionated CD4(+)CD25(+) T cells.
6626 19008314 CD4(+)CD25(+)CD45RB(Low) T cells were more effective at suppressing histological thyroiditis than unfractionated cells.
6627 19008314 These results indicated that TRAIL can increase the number of mTg-specific CD4(+)CD25(+)CD45RB(Low) T cells, inhibiting autoimmune responses and preventing the progression of EAT.
6628 19008314 Tumor necrosis factor-related apoptosis-inducing ligand inhibits experimental autoimmune thyroiditis by the expansion of CD4+CD25+ regulatory T cells.
6629 19008314 There have been several reports that TNF-related apoptosis-inducing ligand (TRAIL) has the ability to suppress the development of experimental autoimmune diseases, including a mouse model of experimental autoimmune encephalomyelitis, a rabbit model of rheumatoid arthritis, type 1 diabetes mellitus, in mice and experimental autoimmune thyroiditis (EAT) in mice.
6630 19008314 In the present study, we specifically examined TRAIL effects on CD4(+)CD25(+) regulatory T cells.
6631 19008314 CD4(+)CD25(+) T cells prepared from mouse thyroglobulin (mTg)-immunized CBA/J mice proliferate in the presence of TRAIL and dendritic cells in vitro.
6632 19008314 These CD4(+)CD25(+) T cells included both CD4(+)CD25(+)CD45RB(Low) (regulatory) and CD4(+)CD25(+)CD45RB(High) (effector) T cells.
6633 19008314 Our results demonstrated that mTg-immunized mice treated with TRAIL showed significant increases in the number of CD4(+)CD25(+)CD45RB(Low) T cells compared with mice immunized with mTg alone.
6634 19008314 CD4(+)CD25(+)CD45RB(Low) T cells expressed much higher levels of the forkhead family transcription factor, IL-10, and TGFbeta1 than CD4(+)CD25(+)CD45RB(High) T cells, and these cells can completely suppress the proliferation of the mTg-primed splenocytes in lower concentrations than the unfractionated CD4(+)CD25(+) T cells.
6635 19008314 CD4(+)CD25(+)CD45RB(Low) T cells were more effective at suppressing histological thyroiditis than unfractionated cells.
6636 19008314 These results indicated that TRAIL can increase the number of mTg-specific CD4(+)CD25(+)CD45RB(Low) T cells, inhibiting autoimmune responses and preventing the progression of EAT.
6637 19008314 Tumor necrosis factor-related apoptosis-inducing ligand inhibits experimental autoimmune thyroiditis by the expansion of CD4+CD25+ regulatory T cells.
6638 19008314 There have been several reports that TNF-related apoptosis-inducing ligand (TRAIL) has the ability to suppress the development of experimental autoimmune diseases, including a mouse model of experimental autoimmune encephalomyelitis, a rabbit model of rheumatoid arthritis, type 1 diabetes mellitus, in mice and experimental autoimmune thyroiditis (EAT) in mice.
6639 19008314 In the present study, we specifically examined TRAIL effects on CD4(+)CD25(+) regulatory T cells.
6640 19008314 CD4(+)CD25(+) T cells prepared from mouse thyroglobulin (mTg)-immunized CBA/J mice proliferate in the presence of TRAIL and dendritic cells in vitro.
6641 19008314 These CD4(+)CD25(+) T cells included both CD4(+)CD25(+)CD45RB(Low) (regulatory) and CD4(+)CD25(+)CD45RB(High) (effector) T cells.
6642 19008314 Our results demonstrated that mTg-immunized mice treated with TRAIL showed significant increases in the number of CD4(+)CD25(+)CD45RB(Low) T cells compared with mice immunized with mTg alone.
6643 19008314 CD4(+)CD25(+)CD45RB(Low) T cells expressed much higher levels of the forkhead family transcription factor, IL-10, and TGFbeta1 than CD4(+)CD25(+)CD45RB(High) T cells, and these cells can completely suppress the proliferation of the mTg-primed splenocytes in lower concentrations than the unfractionated CD4(+)CD25(+) T cells.
6644 19008314 CD4(+)CD25(+)CD45RB(Low) T cells were more effective at suppressing histological thyroiditis than unfractionated cells.
6645 19008314 These results indicated that TRAIL can increase the number of mTg-specific CD4(+)CD25(+)CD45RB(Low) T cells, inhibiting autoimmune responses and preventing the progression of EAT.
6646 19008314 Tumor necrosis factor-related apoptosis-inducing ligand inhibits experimental autoimmune thyroiditis by the expansion of CD4+CD25+ regulatory T cells.
6647 19008314 There have been several reports that TNF-related apoptosis-inducing ligand (TRAIL) has the ability to suppress the development of experimental autoimmune diseases, including a mouse model of experimental autoimmune encephalomyelitis, a rabbit model of rheumatoid arthritis, type 1 diabetes mellitus, in mice and experimental autoimmune thyroiditis (EAT) in mice.
6648 19008314 In the present study, we specifically examined TRAIL effects on CD4(+)CD25(+) regulatory T cells.
6649 19008314 CD4(+)CD25(+) T cells prepared from mouse thyroglobulin (mTg)-immunized CBA/J mice proliferate in the presence of TRAIL and dendritic cells in vitro.
6650 19008314 These CD4(+)CD25(+) T cells included both CD4(+)CD25(+)CD45RB(Low) (regulatory) and CD4(+)CD25(+)CD45RB(High) (effector) T cells.
6651 19008314 Our results demonstrated that mTg-immunized mice treated with TRAIL showed significant increases in the number of CD4(+)CD25(+)CD45RB(Low) T cells compared with mice immunized with mTg alone.
6652 19008314 CD4(+)CD25(+)CD45RB(Low) T cells expressed much higher levels of the forkhead family transcription factor, IL-10, and TGFbeta1 than CD4(+)CD25(+)CD45RB(High) T cells, and these cells can completely suppress the proliferation of the mTg-primed splenocytes in lower concentrations than the unfractionated CD4(+)CD25(+) T cells.
6653 19008314 CD4(+)CD25(+)CD45RB(Low) T cells were more effective at suppressing histological thyroiditis than unfractionated cells.
6654 19008314 These results indicated that TRAIL can increase the number of mTg-specific CD4(+)CD25(+)CD45RB(Low) T cells, inhibiting autoimmune responses and preventing the progression of EAT.
6655 19008314 Tumor necrosis factor-related apoptosis-inducing ligand inhibits experimental autoimmune thyroiditis by the expansion of CD4+CD25+ regulatory T cells.
6656 19008314 There have been several reports that TNF-related apoptosis-inducing ligand (TRAIL) has the ability to suppress the development of experimental autoimmune diseases, including a mouse model of experimental autoimmune encephalomyelitis, a rabbit model of rheumatoid arthritis, type 1 diabetes mellitus, in mice and experimental autoimmune thyroiditis (EAT) in mice.
6657 19008314 In the present study, we specifically examined TRAIL effects on CD4(+)CD25(+) regulatory T cells.
6658 19008314 CD4(+)CD25(+) T cells prepared from mouse thyroglobulin (mTg)-immunized CBA/J mice proliferate in the presence of TRAIL and dendritic cells in vitro.
6659 19008314 These CD4(+)CD25(+) T cells included both CD4(+)CD25(+)CD45RB(Low) (regulatory) and CD4(+)CD25(+)CD45RB(High) (effector) T cells.
6660 19008314 Our results demonstrated that mTg-immunized mice treated with TRAIL showed significant increases in the number of CD4(+)CD25(+)CD45RB(Low) T cells compared with mice immunized with mTg alone.
6661 19008314 CD4(+)CD25(+)CD45RB(Low) T cells expressed much higher levels of the forkhead family transcription factor, IL-10, and TGFbeta1 than CD4(+)CD25(+)CD45RB(High) T cells, and these cells can completely suppress the proliferation of the mTg-primed splenocytes in lower concentrations than the unfractionated CD4(+)CD25(+) T cells.
6662 19008314 CD4(+)CD25(+)CD45RB(Low) T cells were more effective at suppressing histological thyroiditis than unfractionated cells.
6663 19008314 These results indicated that TRAIL can increase the number of mTg-specific CD4(+)CD25(+)CD45RB(Low) T cells, inhibiting autoimmune responses and preventing the progression of EAT.
6664 19008314 Tumor necrosis factor-related apoptosis-inducing ligand inhibits experimental autoimmune thyroiditis by the expansion of CD4+CD25+ regulatory T cells.
6665 19008314 There have been several reports that TNF-related apoptosis-inducing ligand (TRAIL) has the ability to suppress the development of experimental autoimmune diseases, including a mouse model of experimental autoimmune encephalomyelitis, a rabbit model of rheumatoid arthritis, type 1 diabetes mellitus, in mice and experimental autoimmune thyroiditis (EAT) in mice.
6666 19008314 In the present study, we specifically examined TRAIL effects on CD4(+)CD25(+) regulatory T cells.
6667 19008314 CD4(+)CD25(+) T cells prepared from mouse thyroglobulin (mTg)-immunized CBA/J mice proliferate in the presence of TRAIL and dendritic cells in vitro.
6668 19008314 These CD4(+)CD25(+) T cells included both CD4(+)CD25(+)CD45RB(Low) (regulatory) and CD4(+)CD25(+)CD45RB(High) (effector) T cells.
6669 19008314 Our results demonstrated that mTg-immunized mice treated with TRAIL showed significant increases in the number of CD4(+)CD25(+)CD45RB(Low) T cells compared with mice immunized with mTg alone.
6670 19008314 CD4(+)CD25(+)CD45RB(Low) T cells expressed much higher levels of the forkhead family transcription factor, IL-10, and TGFbeta1 than CD4(+)CD25(+)CD45RB(High) T cells, and these cells can completely suppress the proliferation of the mTg-primed splenocytes in lower concentrations than the unfractionated CD4(+)CD25(+) T cells.
6671 19008314 CD4(+)CD25(+)CD45RB(Low) T cells were more effective at suppressing histological thyroiditis than unfractionated cells.
6672 19008314 These results indicated that TRAIL can increase the number of mTg-specific CD4(+)CD25(+)CD45RB(Low) T cells, inhibiting autoimmune responses and preventing the progression of EAT.
6673 19008314 Tumor necrosis factor-related apoptosis-inducing ligand inhibits experimental autoimmune thyroiditis by the expansion of CD4+CD25+ regulatory T cells.
6674 19008314 There have been several reports that TNF-related apoptosis-inducing ligand (TRAIL) has the ability to suppress the development of experimental autoimmune diseases, including a mouse model of experimental autoimmune encephalomyelitis, a rabbit model of rheumatoid arthritis, type 1 diabetes mellitus, in mice and experimental autoimmune thyroiditis (EAT) in mice.
6675 19008314 In the present study, we specifically examined TRAIL effects on CD4(+)CD25(+) regulatory T cells.
6676 19008314 CD4(+)CD25(+) T cells prepared from mouse thyroglobulin (mTg)-immunized CBA/J mice proliferate in the presence of TRAIL and dendritic cells in vitro.
6677 19008314 These CD4(+)CD25(+) T cells included both CD4(+)CD25(+)CD45RB(Low) (regulatory) and CD4(+)CD25(+)CD45RB(High) (effector) T cells.
6678 19008314 Our results demonstrated that mTg-immunized mice treated with TRAIL showed significant increases in the number of CD4(+)CD25(+)CD45RB(Low) T cells compared with mice immunized with mTg alone.
6679 19008314 CD4(+)CD25(+)CD45RB(Low) T cells expressed much higher levels of the forkhead family transcription factor, IL-10, and TGFbeta1 than CD4(+)CD25(+)CD45RB(High) T cells, and these cells can completely suppress the proliferation of the mTg-primed splenocytes in lower concentrations than the unfractionated CD4(+)CD25(+) T cells.
6680 19008314 CD4(+)CD25(+)CD45RB(Low) T cells were more effective at suppressing histological thyroiditis than unfractionated cells.
6681 19008314 These results indicated that TRAIL can increase the number of mTg-specific CD4(+)CD25(+)CD45RB(Low) T cells, inhibiting autoimmune responses and preventing the progression of EAT.
6682 19011680 APC activation restores functional CD4(+)CD25(+) regulatory T cells in NOD mice that can prevent diabetes development.
6683 19018006 Moreover, in vivo BLyS neutralization: 1) restored negative selection at the TR-->FO checkpoint, 2) abrogated serum insulin autoantibodies, 3) reduced the severity of islet inflammation, 4) significantly reduced the incidence of spontaneous diabetes, 5) arrested the terminal stages of islet cell destruction, and 6) disrupted CD4 T cell activation in NOD mice.
6684 19034003 Pancreatic islets induce CD4(+) [corrected] CD25(-)Foxp3(+) [corrected] T-cell regulated tolerance to HY-mismatched skin grafts.
6685 19036642 It is widely believed that CD4(+)CD25(+) regulatory T cells (Treg) are defective in type 1 diabetes (T1D) and other autoimmune diseases.
6686 19036642 The frequencies of CD4(+)CD25(+) and CD4(+)CD25(hi) T cells were found to increase with age in normal controls but not in T1D patients, resulting in significantly higher frequencies of CD4(+)CD25(+) (p=0.001) and CD4(+)CD25(hi) (p=0.009) T cells in young T1D subjects than age-matched controls but slightly lower CD4(+)CD25(+) (p=0.003) and CD4(+)CD25(hi) (p=0.08) T cells in old T1D subjects than age-matched controls.
6687 19036642 It is widely believed that CD4(+)CD25(+) regulatory T cells (Treg) are defective in type 1 diabetes (T1D) and other autoimmune diseases.
6688 19036642 The frequencies of CD4(+)CD25(+) and CD4(+)CD25(hi) T cells were found to increase with age in normal controls but not in T1D patients, resulting in significantly higher frequencies of CD4(+)CD25(+) (p=0.001) and CD4(+)CD25(hi) (p=0.009) T cells in young T1D subjects than age-matched controls but slightly lower CD4(+)CD25(+) (p=0.003) and CD4(+)CD25(hi) (p=0.08) T cells in old T1D subjects than age-matched controls.
6689 19044032 He was given a clinical diagnosis of central neurosarcoidosis with panhypopituitarism because of the presence of an abnormal lung shadow, positive gallium scintigram in bilateral hilar lymph nodes, negative tuberculin skin test, lymphocytosis and a high CD4/8 ratio in bronchoalveolar lavage fluid.
6690 19050246 Therapeutic administration of proinsulin DNA was accompanied by a rapid decrease in the number of insulin-specific IFN-gamma-producing T cells, whereas prophylactic treatment was accompanied by enhanced IFN-gamma-secreting cells and a decrease in insulin autoantibodies.
6691 19050246 Adoptive transfer experiments demonstrated that the protection was not mediated by induction of CD25(+)/CD4(+) T regulatory cells.
6692 19050249 Exposure of APCs of NOD mice to zymosan, a fungal cell wall component that interacts with TLR2 and dectin 1, resulted in the release of significant amounts of IL-10, TGF-beta1, IL-2, and TNF-alpha.
6693 19050249 Zymosan treatment induced suppression of T1D was associated with an increase in the L-selectin(high) T cell frequencies and enhanced suppressor function of CD4(+)CD25(+) T regulatory cells.
6694 19050249 Further, activation by anti-CD3-Ab induced larger amounts of TGF-beta1 and/or IL-10 production by CD4(+)CD25(+) and CD4(+)CD25(-) T cells from zymosan-treated mice.
6695 19050249 Exposure of APCs of NOD mice to zymosan, a fungal cell wall component that interacts with TLR2 and dectin 1, resulted in the release of significant amounts of IL-10, TGF-beta1, IL-2, and TNF-alpha.
6696 19050249 Zymosan treatment induced suppression of T1D was associated with an increase in the L-selectin(high) T cell frequencies and enhanced suppressor function of CD4(+)CD25(+) T regulatory cells.
6697 19050249 Further, activation by anti-CD3-Ab induced larger amounts of TGF-beta1 and/or IL-10 production by CD4(+)CD25(+) and CD4(+)CD25(-) T cells from zymosan-treated mice.
6698 19062254 Autologous bone marrow-derived rat mesenchymal stem cells promote PDX-1 and insulin expression in the islets, alter T cell cytokine pattern and preserve regulatory T cells in the periphery and induce sustained normoglycemia.
6699 19062254 MSC were CD45(-)/CD44(+)/CD54(+)/CD90(+)/CD106(+).
6700 19062254 MSC spontaneously secreted IL-6, HGF, TGF-beta1 and expressed high levels of SDF-1 and low levels of VEGF, IL-1beta and PGE(2), but no EGF, insulin or glucagon.
6701 19062254 Interestingly, immunohistochemistry demonstrated that, the islets from MSC-treated rats expressed high levels of PDX-1 and that these cells were also positive for insulin staining.
6702 19062254 In addition, peripheral T cells from MSC-treated rats exhibited a shift toward IL-10/IL-13 production and higher frequencies of CD4(+)/CD8(+) Foxp3(+) T cells compared to the PBS-treated rats.
6703 19076626 The primary antibodies used were monoclonal antibody to S100, CD1a, CD34, HLA-DR, PCNA, CD45Ro, CD40, and langerin.
6704 19076626 Cells CD1a+ and S100+ infiltrated the epidermic and were dispersed over the infiltrates as well as in clusters, and around the vessels.
6705 19076626 A considerable number of CD40-expressing cells were restricted to CD1a+ LCH cells.
6706 19076626 Histopathologic examination of the lesion evidences a mixture of Langerhans cell histiocytes (CD1a+, S100+, HLADr+, CD207+, CD 40+), lymphocytes (predominantly helper [CD4] CD 45 Ro+), eosinophils, and macrophages.
6707 19111164 Type 1 diabetes (T1D), an autoimmune disease once thought to be mediated exclusively by beta cell-specific CD4+ T cells, is now recognized as one in which autoreactive CD8+ T cells play a fundamental role.
6708 19111528 Although the PTPRC gene has a significant role in regulating CD4+ and CD8+ autoreactive T-cells, interferon-beta responsiveness, and potentially other important processes, our study does not support a role for the two tested variants of this gene in MS susceptibility in the Australian population.
6709 19120285 We report that TLR agonists prevent the generation of mixed chimerism by breaking tolerance in the alloreactive CD4(+) and CD8(+) T cell compartments, and that type I interferon (IFN) is important in this process.
6710 19120288 Furthermore, TCR-transgenic CD4(+) T cells primed by the antigens to which they were specific in the presence of UVB-irradiated stromal cells were rendered unresponsive to the antigen restimulation, a result that was partially attributed to the induced IL-10-producing regulatory T cells.
6711 19120290 Of interest, Ad-hTGFbeta transduction in CD4(+)CD25(-) T cells resulted in a significant enhanced expression of CD25 and a regulatory T cell-specific transcription factor, Foxp3.
6712 19120290 Although we found favorable in vitro results, such as decrease in islet apoptosis, enhanced proliferation and differentiation, and increase in the level of CD4(+)CD25(+) regulatory T cells, there was no difference in reduction of the development of T1D between controls and Ad-hTGFbeta-injected mice.
6713 19120290 Of interest, Ad-hTGFbeta transduction in CD4(+)CD25(-) T cells resulted in a significant enhanced expression of CD25 and a regulatory T cell-specific transcription factor, Foxp3.
6714 19120290 Although we found favorable in vitro results, such as decrease in islet apoptosis, enhanced proliferation and differentiation, and increase in the level of CD4(+)CD25(+) regulatory T cells, there was no difference in reduction of the development of T1D between controls and Ad-hTGFbeta-injected mice.
6715 19120302 Administration of a humanized monoclonal anti-CD3 antibody (mAb) to patients with type 1 diabetes (T1D) increases their C-peptide responses and the CD8/CD4 ratio.
6716 19120302 Incubation of human peripheral blood mononuclear cells (PBMC) with mAb in vitro has been shown to induce CD8(+) regulatory T cells (Tregs) capable of inhibiting proliferation of CD4(+) T cells.
6717 19120302 Administration of a humanized monoclonal anti-CD3 antibody (mAb) to patients with type 1 diabetes (T1D) increases their C-peptide responses and the CD8/CD4 ratio.
6718 19120302 Incubation of human peripheral blood mononuclear cells (PBMC) with mAb in vitro has been shown to induce CD8(+) regulatory T cells (Tregs) capable of inhibiting proliferation of CD4(+) T cells.
6719 19120311 The sentinel role of CD8 T cells in regulating CD4 T cell responses to proinsulin in beta-islet cell autoimmunity.
6720 19120311 Circulating CD4 T cells specific for peptide epitopes of proinsulin and other autoantigens are markers of autoimmune beta cell destruction in type 1 diabetes, while the role of CD8 T cells is still largely unknown.
6721 19120311 Here we show that CD8 T cells of a diabetic patient--after rechallange with proinsulin peptides--secrete IFNgamma and granzyme B, markers of their effector capacity.
6722 19120311 On the other hand, CD8 T cells of the same patient in a "cross-talk" with proinsulin-specific CD4 T cells suppress their proliferation.
6723 19120311 The sentinel role of CD8 T cells in regulating CD4 T cell responses to proinsulin in beta-islet cell autoimmunity.
6724 19120311 Circulating CD4 T cells specific for peptide epitopes of proinsulin and other autoantigens are markers of autoimmune beta cell destruction in type 1 diabetes, while the role of CD8 T cells is still largely unknown.
6725 19120311 Here we show that CD8 T cells of a diabetic patient--after rechallange with proinsulin peptides--secrete IFNgamma and granzyme B, markers of their effector capacity.
6726 19120311 On the other hand, CD8 T cells of the same patient in a "cross-talk" with proinsulin-specific CD4 T cells suppress their proliferation.
6727 19120311 The sentinel role of CD8 T cells in regulating CD4 T cell responses to proinsulin in beta-islet cell autoimmunity.
6728 19120311 Circulating CD4 T cells specific for peptide epitopes of proinsulin and other autoantigens are markers of autoimmune beta cell destruction in type 1 diabetes, while the role of CD8 T cells is still largely unknown.
6729 19120311 Here we show that CD8 T cells of a diabetic patient--after rechallange with proinsulin peptides--secrete IFNgamma and granzyme B, markers of their effector capacity.
6730 19120311 On the other hand, CD8 T cells of the same patient in a "cross-talk" with proinsulin-specific CD4 T cells suppress their proliferation.
6731 19120313 CD4(+)CD25(+) T cells (Tregs) play a critical role in maintaining dominant peripheral tolerance, and pathogenic autoreactive T cells may be frequent in the CD25-negative fraction of peripheral blood mononuclear cells (PBMCs) from patients with autoimmune disease.
6732 19120313 The frequency of CD4(+)CD25(+) T cells was not different among patients with newly developed T1D, established T1D, and healthy controls.
6733 19120313 The CD25 positive cell-depleted fraction was obtained by negative selection with antihuman CD25 magnetic beads, reducing the number of CD4(+)CD25(+) T cells from 4-5% to less than 1%.
6734 19120313 CD4(+)CD25(+) T cells (Tregs) play a critical role in maintaining dominant peripheral tolerance, and pathogenic autoreactive T cells may be frequent in the CD25-negative fraction of peripheral blood mononuclear cells (PBMCs) from patients with autoimmune disease.
6735 19120313 The frequency of CD4(+)CD25(+) T cells was not different among patients with newly developed T1D, established T1D, and healthy controls.
6736 19120313 The CD25 positive cell-depleted fraction was obtained by negative selection with antihuman CD25 magnetic beads, reducing the number of CD4(+)CD25(+) T cells from 4-5% to less than 1%.
6737 19120313 CD4(+)CD25(+) T cells (Tregs) play a critical role in maintaining dominant peripheral tolerance, and pathogenic autoreactive T cells may be frequent in the CD25-negative fraction of peripheral blood mononuclear cells (PBMCs) from patients with autoimmune disease.
6738 19120313 The frequency of CD4(+)CD25(+) T cells was not different among patients with newly developed T1D, established T1D, and healthy controls.
6739 19120313 The CD25 positive cell-depleted fraction was obtained by negative selection with antihuman CD25 magnetic beads, reducing the number of CD4(+)CD25(+) T cells from 4-5% to less than 1%.
6740 19130584 To understand the function of Th17 cells in IDDM, we differentiated islet-reactive BDC2.5 TcR transgenic CD4(+) cells in vitro into Th17 cells and transferred them into NOD.scid and neonate NOD mice.
6741 19130584 Surprisingly, BDC2.5(+) cells recovered from diabetic NOD.scid mice, in comparison with those from neonate NOD mice, showed predominant IFN-gamma over IL-17 expression, indicating conversion of donor cells into Th1 cells.
6742 19130584 Moreover, diabetes progression in NOD.scid recipients was dependent on IFN-gamma while anti-IL-17 treatment reduced insulitic inflammation.
6743 19130584 These results indicate that islet-reactive Th17 cells promote pancreatic inflammation, but only induce IDDM upon conversion into IFN-gamma producers.
6744 19136960 Interleukin 7 signaling in dendritic cells regulates the homeostatic proliferation and niche size of CD4+ T cells.
6745 19136960 Interleukin 7 (IL-7) and T cell antigen receptor signals have been proposed to be the main drivers of homeostatic T cell proliferation.
6746 19136960 However, it is not known why CD4(+) T cells undergo less-efficient homeostatic proliferation than CD8(+) T cells do.
6747 19136960 Here we show that systemic IL-7 concentrations increased during lymphopenia because of diminished use of IL-7 but that IL-7 signaling on IL-7 receptor-alpha-positive (IL-7Ralpha(+)) dendritic cells (DCs) in lymphopenic settings paradoxically diminished the homeostatic proliferation of CD4(+) T cells.
6748 19136960 This effect was mediated at least in part by IL-7-mediated downregulation of the expression of major histocompatibility complex class II on IL-7Ralpha(+) DCs.
6749 19136960 Our results indicate that IL-7Ralpha(+) DCs are regulators of the peripheral CD4(+) T cell niche and that IL-7 signals in DCs prevent uncontrolled CD4(+) T cell population expansion in vivo.
6750 19136960 Interleukin 7 signaling in dendritic cells regulates the homeostatic proliferation and niche size of CD4+ T cells.
6751 19136960 Interleukin 7 (IL-7) and T cell antigen receptor signals have been proposed to be the main drivers of homeostatic T cell proliferation.
6752 19136960 However, it is not known why CD4(+) T cells undergo less-efficient homeostatic proliferation than CD8(+) T cells do.
6753 19136960 Here we show that systemic IL-7 concentrations increased during lymphopenia because of diminished use of IL-7 but that IL-7 signaling on IL-7 receptor-alpha-positive (IL-7Ralpha(+)) dendritic cells (DCs) in lymphopenic settings paradoxically diminished the homeostatic proliferation of CD4(+) T cells.
6754 19136960 This effect was mediated at least in part by IL-7-mediated downregulation of the expression of major histocompatibility complex class II on IL-7Ralpha(+) DCs.
6755 19136960 Our results indicate that IL-7Ralpha(+) DCs are regulators of the peripheral CD4(+) T cell niche and that IL-7 signals in DCs prevent uncontrolled CD4(+) T cell population expansion in vivo.
6756 19136960 Interleukin 7 signaling in dendritic cells regulates the homeostatic proliferation and niche size of CD4+ T cells.
6757 19136960 Interleukin 7 (IL-7) and T cell antigen receptor signals have been proposed to be the main drivers of homeostatic T cell proliferation.
6758 19136960 However, it is not known why CD4(+) T cells undergo less-efficient homeostatic proliferation than CD8(+) T cells do.
6759 19136960 Here we show that systemic IL-7 concentrations increased during lymphopenia because of diminished use of IL-7 but that IL-7 signaling on IL-7 receptor-alpha-positive (IL-7Ralpha(+)) dendritic cells (DCs) in lymphopenic settings paradoxically diminished the homeostatic proliferation of CD4(+) T cells.
6760 19136960 This effect was mediated at least in part by IL-7-mediated downregulation of the expression of major histocompatibility complex class II on IL-7Ralpha(+) DCs.
6761 19136960 Our results indicate that IL-7Ralpha(+) DCs are regulators of the peripheral CD4(+) T cell niche and that IL-7 signals in DCs prevent uncontrolled CD4(+) T cell population expansion in vivo.
6762 19136960 Interleukin 7 signaling in dendritic cells regulates the homeostatic proliferation and niche size of CD4+ T cells.
6763 19136960 Interleukin 7 (IL-7) and T cell antigen receptor signals have been proposed to be the main drivers of homeostatic T cell proliferation.
6764 19136960 However, it is not known why CD4(+) T cells undergo less-efficient homeostatic proliferation than CD8(+) T cells do.
6765 19136960 Here we show that systemic IL-7 concentrations increased during lymphopenia because of diminished use of IL-7 but that IL-7 signaling on IL-7 receptor-alpha-positive (IL-7Ralpha(+)) dendritic cells (DCs) in lymphopenic settings paradoxically diminished the homeostatic proliferation of CD4(+) T cells.
6766 19136960 This effect was mediated at least in part by IL-7-mediated downregulation of the expression of major histocompatibility complex class II on IL-7Ralpha(+) DCs.
6767 19136960 Our results indicate that IL-7Ralpha(+) DCs are regulators of the peripheral CD4(+) T cell niche and that IL-7 signals in DCs prevent uncontrolled CD4(+) T cell population expansion in vivo.
6768 19162441 Here we report that CD103 had no significant impact on the development of primary and memory CD8(+) or CD4(+) responses after acute lymphocytic choriomeningitis virus (LCMV) infection.
6769 19162441 In addition, CD103 was found to be dispensable for T1D progression in a rapid, CD8-mediated virally-induced T1D model (the rat insulin promoter [RIP]-LCMV), suggesting that its previous efficacy in the NOD mouse model may not be related to its effect on the generation, memory conversion and/or effector function of CD8(+) or CD4(+) T cells.
6770 19162441 Here we report that CD103 had no significant impact on the development of primary and memory CD8(+) or CD4(+) responses after acute lymphocytic choriomeningitis virus (LCMV) infection.
6771 19162441 In addition, CD103 was found to be dispensable for T1D progression in a rapid, CD8-mediated virally-induced T1D model (the rat insulin promoter [RIP]-LCMV), suggesting that its previous efficacy in the NOD mouse model may not be related to its effect on the generation, memory conversion and/or effector function of CD8(+) or CD4(+) T cells.
6772 19180473 CD4(+)CD25(+)FOXP3(+) Treg cells require TCR engagement for suppressive function, thus ensuring that suppression occurs only in the presence of specific antigens; however, to date no studies have addressed the function of self-antigen-specific Treg in humans.
6773 19180473 Islet antigen-specific adaptive Treg were induced in vitro by activation of CD4(+)FOXP3(-) T cells with glutamic acid decarboxylase and islet-specific glucose-6-phosphate catalytic subunit-related protein peptides in the context of T1D-associated HLA-DRbeta alleles.
6774 19180473 CD4(+)CD25(+)FOXP3(+) Treg cells require TCR engagement for suppressive function, thus ensuring that suppression occurs only in the presence of specific antigens; however, to date no studies have addressed the function of self-antigen-specific Treg in humans.
6775 19180473 Islet antigen-specific adaptive Treg were induced in vitro by activation of CD4(+)FOXP3(-) T cells with glutamic acid decarboxylase and islet-specific glucose-6-phosphate catalytic subunit-related protein peptides in the context of T1D-associated HLA-DRbeta alleles.
6776 19188932 Induction of CD4+CD25+Foxp3+ regulatory T cell response by glatiramer acetate in type 1 diabetes.
6777 19188932 Treatment with GA significantly reduced the diabetic rate in the mice and ameliorated insulitis, which coincided with increased CD4+CD25+Foxp3+ T cell response in treated mice.
6778 19188932 IL-4 was found to maintain Foxp3 expression and regulatory function of CD4+CD25+ regulatory T cells (Tregs).
6779 19188932 Induction of CD4+CD25+Foxp3+ regulatory T cell response by glatiramer acetate in type 1 diabetes.
6780 19188932 Treatment with GA significantly reduced the diabetic rate in the mice and ameliorated insulitis, which coincided with increased CD4+CD25+Foxp3+ T cell response in treated mice.
6781 19188932 IL-4 was found to maintain Foxp3 expression and regulatory function of CD4+CD25+ regulatory T cells (Tregs).
6782 19188932 Induction of CD4+CD25+Foxp3+ regulatory T cell response by glatiramer acetate in type 1 diabetes.
6783 19188932 Treatment with GA significantly reduced the diabetic rate in the mice and ameliorated insulitis, which coincided with increased CD4+CD25+Foxp3+ T cell response in treated mice.
6784 19188932 IL-4 was found to maintain Foxp3 expression and regulatory function of CD4+CD25+ regulatory T cells (Tregs).
6785 19189134 This report describes a 5-year-old boy with IPEX syndrome with a 3 bp deletion in the FOXP3 gene (c.748-750delAAG, p.250K.del) and a paucity of CD4(+) CD25(+) FOXP3(+) T cells.
6786 19209463 A very significant fraction of islet-associated CD8 T cells in NOD mice recognize epitopes of islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP), a non-essential endoplasmic reticulum-resident protein of unclear function.
6787 19209463 IGRP is also a target of CD8 T cell responses in human T1D patients.
6788 19209463 In NOD mice, most IGRP-reactive CD8 T cells target the IGRP(206-214) epitope and are diabetogenic.
6789 19209463 In mice, Il2 polymorphisms control a negative feedback mechanism initiated by activated, IL2-producing autoreactive T cells in the pancreatic lymph nodes that increases the regulatory activity of CD4+CD25+ T cells.
6790 19209463 Not all IGRP-reactive CD8 T cell clones are pathogenic, however, and we have evidence that some of these clonotypes are actually anti-diabetogenic.
6791 19209463 We had previously shown that administration of altered peptide ligands (APL) targeting IGRP(206-214)-reactive CD8 T cells resulted in diabetes protection only at doses that did not delete low-avidity clones, suggesting a protective role for these clonotypes.
6792 19209463 Here I briefly summarize work done by us and others indicating that a prevalent subset of autoreactive CD8 T-cells in the NOD mouse are major (albeit likely dispensable) players in the pathogenesis of spontaneous autoimmune diabetes in the NOD mouse; that these T cells are targets of genetic elements affording autoimmune disease susceptibility and resistance; that they can either be diabetogenic or anti-diabetogenic according to their avidity for peptide/MHC; and that they can serve as useful targets for therapeutic intervention.
6793 19211146 Prevention of T1D was associated with reduced emergence of primed (autoreactive) CD4(+) CD25(+) T cells, but not with the emergence of Foxp3(+) Treg in the peripheral compartments.
6794 19211146 However, administration of ATRA to NOD mice in which the proportion and function of CD4(+)Foxp3(+) Treg cells was abrogated by cyclophosphamide (CY), failed to permit progression to T1D.
6795 19211146 Prevention of T1D was associated with reduced emergence of primed (autoreactive) CD4(+) CD25(+) T cells, but not with the emergence of Foxp3(+) Treg in the peripheral compartments.
6796 19211146 However, administration of ATRA to NOD mice in which the proportion and function of CD4(+)Foxp3(+) Treg cells was abrogated by cyclophosphamide (CY), failed to permit progression to T1D.
6797 19214972 Control of type 1 diabetes by CD4+Foxp3+ regulatory T cells: lessons from mouse models and implications for human disease.
6798 19214972 In this review, we summarize research from various laboratories, including our own, showing that CD4(+)Foxp3(+) T(reg) cells are critical in the control of type 1 diabetes (T1D) in mouse models and humans.
6799 19214972 In this review, we also discuss cellular and molecular determinants that impact CD4(+)Foxp3(+) T(reg) cell development and function and consequential resistance to organ-specific autoimmune disease.
6800 19214972 Recent advances in the use of CD4(+)Foxp3(+) T(reg) cellular therapy to promote immunological tolerance in the absence of long-term generalized immunosuppression are also presented.
6801 19214972 Control of type 1 diabetes by CD4+Foxp3+ regulatory T cells: lessons from mouse models and implications for human disease.
6802 19214972 In this review, we summarize research from various laboratories, including our own, showing that CD4(+)Foxp3(+) T(reg) cells are critical in the control of type 1 diabetes (T1D) in mouse models and humans.
6803 19214972 In this review, we also discuss cellular and molecular determinants that impact CD4(+)Foxp3(+) T(reg) cell development and function and consequential resistance to organ-specific autoimmune disease.
6804 19214972 Recent advances in the use of CD4(+)Foxp3(+) T(reg) cellular therapy to promote immunological tolerance in the absence of long-term generalized immunosuppression are also presented.
6805 19214972 Control of type 1 diabetes by CD4+Foxp3+ regulatory T cells: lessons from mouse models and implications for human disease.
6806 19214972 In this review, we summarize research from various laboratories, including our own, showing that CD4(+)Foxp3(+) T(reg) cells are critical in the control of type 1 diabetes (T1D) in mouse models and humans.
6807 19214972 In this review, we also discuss cellular and molecular determinants that impact CD4(+)Foxp3(+) T(reg) cell development and function and consequential resistance to organ-specific autoimmune disease.
6808 19214972 Recent advances in the use of CD4(+)Foxp3(+) T(reg) cellular therapy to promote immunological tolerance in the absence of long-term generalized immunosuppression are also presented.
6809 19214972 Control of type 1 diabetes by CD4+Foxp3+ regulatory T cells: lessons from mouse models and implications for human disease.
6810 19214972 In this review, we summarize research from various laboratories, including our own, showing that CD4(+)Foxp3(+) T(reg) cells are critical in the control of type 1 diabetes (T1D) in mouse models and humans.
6811 19214972 In this review, we also discuss cellular and molecular determinants that impact CD4(+)Foxp3(+) T(reg) cell development and function and consequential resistance to organ-specific autoimmune disease.
6812 19214972 Recent advances in the use of CD4(+)Foxp3(+) T(reg) cellular therapy to promote immunological tolerance in the absence of long-term generalized immunosuppression are also presented.
6813 19217258 T cells from recipients transplanted with allogeneic islets +MSC produced low levels of IFN-gamma and TNF-alpha upon ex-vivo activation, and this transplantation protocol promoted the generation of IL-10-secreting CD4(+) T cells.
6814 19218134 [Role of CD4+CD25+Foxp3+ regulatory T cells in type 2 diabetic nephropathy].
6815 19221395 This abrupt disease was associated with the production of interferon gamma by P0-specific T cells and a lack of CD4(+) Foxp3(+) regulatory T cells.
6816 19224710 A profound and progressive infiltration with CD4(+), CD8(+) cells, natural killer cells, and macrophages was identified in adenovirus transduced grafts, which paralleled a decline in beta-gal expression.
6817 19224710 Intragraft interferon (IFN)-gamma and RANTES mRNA expression was not different between transduced and untransduced islet grafts, despite an increased expression of CC chemokine receptor 5 (CCR5).
6818 19224710 No significant splenocyte IFN-gamma and interleukin (IL)-4 production or serum anti-adenoviral antibodies were discovered albeit IgM antibody was detected in transduced grafts.
6819 19234158 We demonstrated that in nonobese diabetic (NOD) mice, gal-1 therapy reduces significantly the amount of Th1 cells, augments the number of T cells secreting IL-4 or IL-10 specific for islet cell Ag, and causes peripheral deletion of beta-cell-reactive T cells.
6820 19234158 Preventive gal-1 therapy shifted the composition of the insulitis into an infiltrate that did not invade the islets and that contained a significantly reduced number of Th1 cells and a higher percentage of CD4(+) T cells with content of IL-4, IL-5, or IL-10.
6821 19255186 To investigate the role of suppressor of cytokine signaling (SOCS) molecules in periodontal immunity and RANKL-mediated dendritic cell (DC)-associated osteoclastogenesis, we analyzed SOCS expression profiles in CD4(+) T cells and the effect of SOCS3 expression in CD11c(+) DCs during periodontal inflammation-induced osteoclastogenesis and bone loss in nonobese diabetic (NOD) versus humanized NOD/SCID mice.
6822 19255186 Our results of ex vivo and in vitro analyses showed that (i) there is significantly higher SOCS3 expression associated with RANKL(+) T-cell-mediated bone loss in correlation with increased CD11c(+) DC-mediated osteoclastogenesis; (ii) the transfection of CD11c(+) DC using an adenoviral vector carrying a dominant negative SOCS3 gene significantly abrogates TRAP and bone-resorptive activity; and (iii) inflammation-induced TRAP expression, bone resorption, and SOCS3 activity are not associated with any detectable change in the expression levels of TRAF6 and mitogen-activated protein kinase signaling adaptors (i.e., Erk, Jnk, p38, and Akt) in RANKL(+) T cells.
6823 19261537 Interleukin-21 (IL-21)-mediated pathways in T cell-mediated disease.
6824 19261537 Interleukin-21 (IL-21) is produced mostly by activated CD4+ T cells and controls the differentiation and functional activity of effector T helper cells, counteracts the suppressive effects of regulatory T cells, and stimulates non-immune cells to make inflammatory mediators.
6825 19261537 Therefore new treatment modalities to neutralise IL-21 in vivo would be a valuable addition to the therapeutic armamentarium to combat immune-mediated inflammation.
6826 19261537 Here we describe the emerging role of IL-21 in the initiation and progress of the tissue-damaging inflammatory response in immune-mediated pathologies.
6827 19275768 However, it was not until the discovery that CD4(+)CD25(+) T-cells had suppressive capabilities both in vitro and in vivo that this concept regained credibility and developed into one of the most active research areas in immunology today.
6828 19291704 Foxp3 induction requires the presence of DC, which we also show are modified by SEA to upregulate C-type lectins, IL-10 and IL-2.
6829 19291704 Our studies show that SEA can have a direct effect on CD4(+) T cells increasing expression of TGF-beta, integrin beta8 and galectins.
6830 19292763 The A-chain of insulin is a hot-spot for CD4+ T cell epitopes in human type 1 diabetes.
6831 19292763 Human CD4(+) T cells from the pancreatic lymph nodes of subjects with T1D respond to the first 15 amino acids of the insulin A-chain.
6832 19292763 Here we describe the analysis of a CD4(+) T cell clone, isolated from a subject with T1D, which recognizes a new HLR-DR4-restricted epitope (KRGIVEQCCTSICS) that overlaps the insulin A1-13 epitope.
6833 19292763 The finding of a further CD4(+) T cell epitope in the N-terminal A-chain region of human insulin underscores the importance of this region as a target of CD4(+) T cell responses in human T1D.
6834 19292763 The A-chain of insulin is a hot-spot for CD4+ T cell epitopes in human type 1 diabetes.
6835 19292763 Human CD4(+) T cells from the pancreatic lymph nodes of subjects with T1D respond to the first 15 amino acids of the insulin A-chain.
6836 19292763 Here we describe the analysis of a CD4(+) T cell clone, isolated from a subject with T1D, which recognizes a new HLR-DR4-restricted epitope (KRGIVEQCCTSICS) that overlaps the insulin A1-13 epitope.
6837 19292763 The finding of a further CD4(+) T cell epitope in the N-terminal A-chain region of human insulin underscores the importance of this region as a target of CD4(+) T cell responses in human T1D.
6838 19292763 The A-chain of insulin is a hot-spot for CD4+ T cell epitopes in human type 1 diabetes.
6839 19292763 Human CD4(+) T cells from the pancreatic lymph nodes of subjects with T1D respond to the first 15 amino acids of the insulin A-chain.
6840 19292763 Here we describe the analysis of a CD4(+) T cell clone, isolated from a subject with T1D, which recognizes a new HLR-DR4-restricted epitope (KRGIVEQCCTSICS) that overlaps the insulin A1-13 epitope.
6841 19292763 The finding of a further CD4(+) T cell epitope in the N-terminal A-chain region of human insulin underscores the importance of this region as a target of CD4(+) T cell responses in human T1D.
6842 19292763 The A-chain of insulin is a hot-spot for CD4+ T cell epitopes in human type 1 diabetes.
6843 19292763 Human CD4(+) T cells from the pancreatic lymph nodes of subjects with T1D respond to the first 15 amino acids of the insulin A-chain.
6844 19292763 Here we describe the analysis of a CD4(+) T cell clone, isolated from a subject with T1D, which recognizes a new HLR-DR4-restricted epitope (KRGIVEQCCTSICS) that overlaps the insulin A1-13 epitope.
6845 19292763 The finding of a further CD4(+) T cell epitope in the N-terminal A-chain region of human insulin underscores the importance of this region as a target of CD4(+) T cell responses in human T1D.
6846 19295543 Genetic association of HLA DQB1 with CD4+CD25+(high) T-cell apoptosis in type 1 diabetes.
6847 19295543 We found earlier an increased apoptosis with decreased viability and function of the CD4+CD25+(high) T-cell subset (Treg) in human subjects with recent-onset T1D and in multiple autoantibody-positive, high at-risk individuals.
6848 19295543 In this study, we test the hypothesis that HLA DQB1 genotypes are associated with increased CD4+CD25+(high) T-cell apoptosis.
6849 19295543 HLA DQ-based genetic risk status was significantly associated with CD4+CD25+(high) T-cell apoptosis, after adjustment for age, gender and phenotypic status (n=83, F=4.04 (d.f.=3), P=0.01).
6850 19295543 Unaffected, autoantibody-negative high risk HLA DQB1 control subjects showed increased CD4+CD25+(high) apoptosis levels compared with low risk HLA DQB1 control subjects (n=26, P=0.002), confirming that the association precedes disease.
6851 19295543 Our study shows an association of HLA DQB1 genotypes with CD4+CD25+(high) T-cell apoptosis, which implicates CD4+CD25+(high) T-cell apoptosis as a new intermediate trait for T1D.
6852 19295543 Genetic association of HLA DQB1 with CD4+CD25+(high) T-cell apoptosis in type 1 diabetes.
6853 19295543 We found earlier an increased apoptosis with decreased viability and function of the CD4+CD25+(high) T-cell subset (Treg) in human subjects with recent-onset T1D and in multiple autoantibody-positive, high at-risk individuals.
6854 19295543 In this study, we test the hypothesis that HLA DQB1 genotypes are associated with increased CD4+CD25+(high) T-cell apoptosis.
6855 19295543 HLA DQ-based genetic risk status was significantly associated with CD4+CD25+(high) T-cell apoptosis, after adjustment for age, gender and phenotypic status (n=83, F=4.04 (d.f.=3), P=0.01).
6856 19295543 Unaffected, autoantibody-negative high risk HLA DQB1 control subjects showed increased CD4+CD25+(high) apoptosis levels compared with low risk HLA DQB1 control subjects (n=26, P=0.002), confirming that the association precedes disease.
6857 19295543 Our study shows an association of HLA DQB1 genotypes with CD4+CD25+(high) T-cell apoptosis, which implicates CD4+CD25+(high) T-cell apoptosis as a new intermediate trait for T1D.
6858 19295543 Genetic association of HLA DQB1 with CD4+CD25+(high) T-cell apoptosis in type 1 diabetes.
6859 19295543 We found earlier an increased apoptosis with decreased viability and function of the CD4+CD25+(high) T-cell subset (Treg) in human subjects with recent-onset T1D and in multiple autoantibody-positive, high at-risk individuals.
6860 19295543 In this study, we test the hypothesis that HLA DQB1 genotypes are associated with increased CD4+CD25+(high) T-cell apoptosis.
6861 19295543 HLA DQ-based genetic risk status was significantly associated with CD4+CD25+(high) T-cell apoptosis, after adjustment for age, gender and phenotypic status (n=83, F=4.04 (d.f.=3), P=0.01).
6862 19295543 Unaffected, autoantibody-negative high risk HLA DQB1 control subjects showed increased CD4+CD25+(high) apoptosis levels compared with low risk HLA DQB1 control subjects (n=26, P=0.002), confirming that the association precedes disease.
6863 19295543 Our study shows an association of HLA DQB1 genotypes with CD4+CD25+(high) T-cell apoptosis, which implicates CD4+CD25+(high) T-cell apoptosis as a new intermediate trait for T1D.
6864 19295543 Genetic association of HLA DQB1 with CD4+CD25+(high) T-cell apoptosis in type 1 diabetes.
6865 19295543 We found earlier an increased apoptosis with decreased viability and function of the CD4+CD25+(high) T-cell subset (Treg) in human subjects with recent-onset T1D and in multiple autoantibody-positive, high at-risk individuals.
6866 19295543 In this study, we test the hypothesis that HLA DQB1 genotypes are associated with increased CD4+CD25+(high) T-cell apoptosis.
6867 19295543 HLA DQ-based genetic risk status was significantly associated with CD4+CD25+(high) T-cell apoptosis, after adjustment for age, gender and phenotypic status (n=83, F=4.04 (d.f.=3), P=0.01).
6868 19295543 Unaffected, autoantibody-negative high risk HLA DQB1 control subjects showed increased CD4+CD25+(high) apoptosis levels compared with low risk HLA DQB1 control subjects (n=26, P=0.002), confirming that the association precedes disease.
6869 19295543 Our study shows an association of HLA DQB1 genotypes with CD4+CD25+(high) T-cell apoptosis, which implicates CD4+CD25+(high) T-cell apoptosis as a new intermediate trait for T1D.
6870 19295543 Genetic association of HLA DQB1 with CD4+CD25+(high) T-cell apoptosis in type 1 diabetes.
6871 19295543 We found earlier an increased apoptosis with decreased viability and function of the CD4+CD25+(high) T-cell subset (Treg) in human subjects with recent-onset T1D and in multiple autoantibody-positive, high at-risk individuals.
6872 19295543 In this study, we test the hypothesis that HLA DQB1 genotypes are associated with increased CD4+CD25+(high) T-cell apoptosis.
6873 19295543 HLA DQ-based genetic risk status was significantly associated with CD4+CD25+(high) T-cell apoptosis, after adjustment for age, gender and phenotypic status (n=83, F=4.04 (d.f.=3), P=0.01).
6874 19295543 Unaffected, autoantibody-negative high risk HLA DQB1 control subjects showed increased CD4+CD25+(high) apoptosis levels compared with low risk HLA DQB1 control subjects (n=26, P=0.002), confirming that the association precedes disease.
6875 19295543 Our study shows an association of HLA DQB1 genotypes with CD4+CD25+(high) T-cell apoptosis, which implicates CD4+CD25+(high) T-cell apoptosis as a new intermediate trait for T1D.
6876 19295543 Genetic association of HLA DQB1 with CD4+CD25+(high) T-cell apoptosis in type 1 diabetes.
6877 19295543 We found earlier an increased apoptosis with decreased viability and function of the CD4+CD25+(high) T-cell subset (Treg) in human subjects with recent-onset T1D and in multiple autoantibody-positive, high at-risk individuals.
6878 19295543 In this study, we test the hypothesis that HLA DQB1 genotypes are associated with increased CD4+CD25+(high) T-cell apoptosis.
6879 19295543 HLA DQ-based genetic risk status was significantly associated with CD4+CD25+(high) T-cell apoptosis, after adjustment for age, gender and phenotypic status (n=83, F=4.04 (d.f.=3), P=0.01).
6880 19295543 Unaffected, autoantibody-negative high risk HLA DQB1 control subjects showed increased CD4+CD25+(high) apoptosis levels compared with low risk HLA DQB1 control subjects (n=26, P=0.002), confirming that the association precedes disease.
6881 19295543 Our study shows an association of HLA DQB1 genotypes with CD4+CD25+(high) T-cell apoptosis, which implicates CD4+CD25+(high) T-cell apoptosis as a new intermediate trait for T1D.
6882 19336675 CD4(+)CD25(+) T-cells control autoimmunity in the absence of B-cells.
6883 19342624 Our results thus demonstrate an important role for BTLA in the induction of peripheral tolerance of both CD4(+) and CD8(+) T cells in vivo.
6884 19347338 Recent data suggest that the proinsulin cleavage product C-peptide could play a causal role in atherogenesis by promoting monocyte and CD4-positive lymphocyte recruitment in early arteriosclerotic lesions and by inducing the proliferation of vascular smooth muscle cells.
6885 19349464 AAMacs are defined by the expression of Arginase 1, chitinase-like molecules, and resistin-like molecule (RELM) alpha/FIZZ1; however, the influence of these molecules on the development, progression, or resolution of inflammatory diseases is unknown.
6886 19349464 Consistent with immunoregulatory properties, recombinant RELM-alpha could bind to macrophages and effector CD4(+) Th2 cells and inhibited Th2 cytokine production in a Bruton's tyrosine kinase-dependent manner.
6887 19380803 LPS mediates its effects via a mechanism that involves both CD4(+) and CD8(+) T cells and results from signaling through either the MyD88 or the type I IFN receptor pathways.
6888 19478458 Delayed T1D onset was due to transient upregulation of programmed cell death-1 ligand 1 (PD-L1) on lymphoid cells, which prevented the expansion of diabetogenic CD8+ T cells expressing programmed cell death-1 (PD-1).
6889 19478458 Reduced T1D incidence was caused by increased numbers of invigorated CD4+CD25+ Tregs, which produced TGF-beta and maintained long-term tolerance.
6890 19478458 Full protection from T1D resulted from synergy between PD-L1 and CD4+CD25+ Tregs.
6891 19478458 Delayed T1D onset was due to transient upregulation of programmed cell death-1 ligand 1 (PD-L1) on lymphoid cells, which prevented the expansion of diabetogenic CD8+ T cells expressing programmed cell death-1 (PD-1).
6892 19478458 Reduced T1D incidence was caused by increased numbers of invigorated CD4+CD25+ Tregs, which produced TGF-beta and maintained long-term tolerance.
6893 19478458 Full protection from T1D resulted from synergy between PD-L1 and CD4+CD25+ Tregs.
6894 19482555 We compared CD4+ T cell avidities for the diabetes-associated autoantigen glutamic acid decarboxylase 555-567 (GAD 555) among serial samples from autoantibody-positive subjects at high risk of progression to type 1 diabetes (T1D).
6895 19494813 T cells dampen innate immune responses through inhibition of NLRP1 and NLRP3 inflammasomes.
6896 19494813 Here we show that mouse effector and memory CD4(+) T cells abolish macrophage inflammasome-mediated caspase-1 activation and subsequent interleukin 1beta release in a cognate manner.
6897 19494813 Inflammasome inhibition is observed for all tested NLRP1 (commonly called NALP1) and NLRP3 (NALP3 or cryopyrin) activators, whereas NLRC4 (IPAF) inflammasome function and release of other inflammatory mediators such as CXCL2, interleukin 6 and tumour necrosis factor are not affected.
6898 19494813 Suppression of the NLRP3 inflammasome requires cell-to-cell contact and can be mimicked by macrophage stimulation with selected ligands of the tumour necrosis factor family, such as CD40L (also known as CD40LG).
6899 19494813 In a NLRP3-dependent peritonitis model, effector CD4(+) T cells are responsible for decreasing neutrophil recruitment in an antigen-dependent manner.
6900 19494813 T cells dampen innate immune responses through inhibition of NLRP1 and NLRP3 inflammasomes.
6901 19494813 Here we show that mouse effector and memory CD4(+) T cells abolish macrophage inflammasome-mediated caspase-1 activation and subsequent interleukin 1beta release in a cognate manner.
6902 19494813 Inflammasome inhibition is observed for all tested NLRP1 (commonly called NALP1) and NLRP3 (NALP3 or cryopyrin) activators, whereas NLRC4 (IPAF) inflammasome function and release of other inflammatory mediators such as CXCL2, interleukin 6 and tumour necrosis factor are not affected.
6903 19494813 Suppression of the NLRP3 inflammasome requires cell-to-cell contact and can be mimicked by macrophage stimulation with selected ligands of the tumour necrosis factor family, such as CD40L (also known as CD40LG).
6904 19494813 In a NLRP3-dependent peritonitis model, effector CD4(+) T cells are responsible for decreasing neutrophil recruitment in an antigen-dependent manner.
6905 19497561 Costimulation via the PD-1 and B7-H1/B7-DC pathway regulates immunity.
6906 19497561 A progressive increase in the expression of PD-1 and B7-H1/B7-DC on T cells and APC, respectively, was observed in the pancreatic lymph nodes of female non-obese diabetic (NOD) mice as they developed diabetes.
6907 19497561 A significantly decreased expression of PD-1 and B7-H1/B7-DC on T cells and APC, respectively, was observed in the periphery of prediabetic NOD mice versus non-diabetic C57BL/6 strain.
6908 19497561 In vivo blocking studies in NOD/B7-2KONOD mice revealed that B7-H1 and B7-DC positively costimulate autoreactive CD4 and CD8 T cells and may co-operate with B7-2 to augment priming and expansion of naïve autoreactive T cells.
6909 19507278 The effects of PHC on postprandial blood glucose concentrations, plasmatic insulin levels, morphology of pancreatic beta cells and CD4(+) T cells proliferation after 28-day treatment were monitored.
6910 19547759 Diminished expression of ICOS, GITR and CTLA-4 at the mRNA level in T regulatory cells of children with newly diagnosed type 1 diabetes.
6911 19547759 The percentages of CD4(+)CD25(high)CD127(dim/-) were very low and did not differ between T1DM and control children.
6912 19547759 We did not observe any statistically significant differences between healthy and diabetic children in mRNA expression for FoxP3, IL-7R (CD127), IL-8RA, IL-10RA, IL-12A, IL-2RA (CD25), IL-21, STAT1, STAT3, SOCS2, SOCS3, TGF-beta1-R1, TGF-beta-R2 and TBX-21 genes.
6913 19547759 Interestingly the mRNA level for CTLA-4, ICOS1, IL-23, IL-27, SMAD3 and GITR were lower in Treg cells of children with diabetes compared to the control patients.
6914 19554034 Redirecting human CD4+CD25+ regulatory T cells from the peripheral blood with pre-defined target specificity.
6915 19557879 We found that the onset of type 1 diabetes in NOD mice was associated with an imbalance of CD4(+)CD25(+)FoxP3(+) regulatory T (Treg) cells and IL-17 producing Th17 cells.
6916 19587699 Finally, we report the results of expression studies demonstrating that CDKAL1 transcripts are virtually absent from skin keratinocytes, but are abundantly expressed in immune cells, especially in CD4+ and CD19+ lymphocytes.
6917 19616319 Recent studies indicate that interleukin (IL)-21, a cytokine produced mostly by activated CD4+ T cells, participates in the tissue damage in various tissues, owing to its ability to regulate the function of immune and non-immune cells.
6918 19616319 For instance, IL-21 controls the differentiation and functional activity of T cells, B cells and NK cells, limits the differentiation of inducible regulatory T cells (Tregs), and makes T cells resistant to the Treg-mediated immunesuppression.
6919 19616319 Here, we focus on data supporting the pathogenic role of IL-21 in human inflammatory diseases and discuss pre-clinical studies that suggest that neutralization of IL-21 in vivo could be a new biological therapy to combat immune-mediated pathologies, such as inflammatory bowel diseases, diabetes, rheumatoid arthritis and systemic lupus erythematosus.
6920 19633131 Vasoactive intestinal peptide (VIP) is a neuroimmunopeptide that has anti-inflammatory effects, promotes Th2 cytokines and CD4(+)CD25(+)FOXP3(+) Treg activation, and stimulates exocrine secretion, smooth muscle relaxation, and vasodilatation favoring uterus quiescence.
6921 19633131 VIP receptors, Vipr1 and Vipr2 (Vpac1 and Vpac2), were expressed at the implantation sites and VIP induced leukemia inhibitory factor (LIF) and Treg marker expression in both strains; however, a reduced Vip expression was found in NOD implantation sites.
6922 19633656 CD4(+) Foxp3(+) T regulatory (T(reg)) cells with a unique phenotype were highly enriched in the abdominal fat of normal mice, but their numbers were strikingly and specifically reduced at this site in insulin-resistant models of obesity.
6923 19635924 By analyzing the T cell development in anti-CTLA-4 scFv/Th1/Th2 triple transgenic mice, we found that beta cell-specific expression of CTLA-4 agonist did not affect the development of Th1/Th2 or CD4(+)CD25(+) regulatory T cells.
6924 19652940 Lymphocyte imbalance in vitiligo patients indicated by elevated CD4+/CD8+ T-cell ratio.
6925 19652940 To investigate the mechanisms of cellular immunity, peripheral blood cell count and lymphocyte subtype analysis by flow cytometry were done. sTNF-RI, IL-6 and CIC serum levels were in the normal range.
6926 19652940 The ratio of CD4+/CD8+ T-cells had an elevated median value of 2.6 [quartiles 2.0; 3.1]. 61% of the vitiligo patients had a ratio higher than 2.4, which was the normal cut-off point.
6927 19652940 Lymphocyte imbalance in vitiligo patients indicated by elevated CD4+/CD8+ T-cell ratio.
6928 19652940 To investigate the mechanisms of cellular immunity, peripheral blood cell count and lymphocyte subtype analysis by flow cytometry were done. sTNF-RI, IL-6 and CIC serum levels were in the normal range.
6929 19652940 The ratio of CD4+/CD8+ T-cells had an elevated median value of 2.6 [quartiles 2.0; 3.1]. 61% of the vitiligo patients had a ratio higher than 2.4, which was the normal cut-off point.
6930 19654878 Apoptosis of CD4+ CD25(high) T cells in type 1 diabetes may be partially mediated by IL-2 deprivation.
6931 19658094 Temporal analysis demonstrated that unlike CD4(+) T cells that are primed in the draining pancreatic lymph nodes, initial proliferation of transferred CD8(+) T cells was detected in the islets.
6932 19658094 Furthermore, ectopic expression of CD80 by beta cells accelerated the onset of insulitis mediated by beta-cell-specific CD8(+) T cells, but had no effect on CD4(+) T-cell-mediated diabetes, suggesting an antigenic interaction between beta cells and naive CD8(+) T cells.
6933 19658094 Temporal analysis demonstrated that unlike CD4(+) T cells that are primed in the draining pancreatic lymph nodes, initial proliferation of transferred CD8(+) T cells was detected in the islets.
6934 19658094 Furthermore, ectopic expression of CD80 by beta cells accelerated the onset of insulitis mediated by beta-cell-specific CD8(+) T cells, but had no effect on CD4(+) T-cell-mediated diabetes, suggesting an antigenic interaction between beta cells and naive CD8(+) T cells.
6935 19667061 CD4(+)CD25(+)Foxp3(+) natural regulatory T cells (T reg cells) maintain self-tolerance and suppress autoimmune diseases such as type 1 diabetes and inflammatory bowel disease (IBD).
6936 19667061 The DC-dependent loss in T reg cells leads to an increase in the number of T cells producing inflammatory cytokines, such as interferon gamma and interleukin 17.
6937 19684036 Resistin: a newly identified chemokine for human CD4-positive lymphocytes.
6938 19684511 Blastic plasmacytoid dendritic cell (BPDC) neoplasm, formerly called blastic natural killer cell lymphoma or CD4+/CD56+ hematodermic neoplasm, is a rare tumor entity, now regarded to be derived from the plasmacytoid dendritic cell (PDC) lineage.
6939 19690518 Efficacy was associated with an expansion of bystander suppressor regulatory T cells (Tregs) recognizing the C-terminal region of GAD65 and secreting interleukin-10 (IL-10), transforming growth factor-beta (TGF-beta), and interferon-gamma (IFN-gamma).
6940 19690518 In addition, we found that frequency and epitope specificity of GAD65-reactive CD4(+) T cells during antigen priming at diabetes onset and Tregs detected after CT correlated.
6941 19690518 Consequently, NOD mice harbored significantly lower levels of GAD65-reactive CD4(+) T cells than RIP-LCMV-GP before and after treatment.
6942 19690518 Efficacy was associated with an expansion of bystander suppressor regulatory T cells (Tregs) recognizing the C-terminal region of GAD65 and secreting interleukin-10 (IL-10), transforming growth factor-beta (TGF-beta), and interferon-gamma (IFN-gamma).
6943 19690518 In addition, we found that frequency and epitope specificity of GAD65-reactive CD4(+) T cells during antigen priming at diabetes onset and Tregs detected after CT correlated.
6944 19690518 Consequently, NOD mice harbored significantly lower levels of GAD65-reactive CD4(+) T cells than RIP-LCMV-GP before and after treatment.
6945 19743458 That is because their primary genetic associations are mostly with certain human leukocyte antigen class II alleles, whose gene products present antigens to CD4(+) T cells.
6946 19752032 Helminth infection can reduce insulitis and type 1 diabetes through CD25- and IL-10-independent mechanisms.
6947 19752032 Interleukin-4 (IL-4), IL-10, and IL-13 expression and the frequency of CD4(+) CD25(+) FoxP3(+) regulatory T cells were elevated in mesenteric and pancreatic lymph nodes.
6948 19752032 Depletion of CD4(+) CD25(+) T cells in vivo did not abrogate H. polygyrus-induced T1D protection, nor did anti-IL-10 receptor blocking antibody.
6949 19752032 These findings suggest that infection with H. polygyrus significantly inhibits T1D in NOD mice through CD25- and IL-10-independent mechanisms and also reduces the severity of T1D when administered late after the onset of insulitis.
6950 19752032 Helminth infection can reduce insulitis and type 1 diabetes through CD25- and IL-10-independent mechanisms.
6951 19752032 Interleukin-4 (IL-4), IL-10, and IL-13 expression and the frequency of CD4(+) CD25(+) FoxP3(+) regulatory T cells were elevated in mesenteric and pancreatic lymph nodes.
6952 19752032 Depletion of CD4(+) CD25(+) T cells in vivo did not abrogate H. polygyrus-induced T1D protection, nor did anti-IL-10 receptor blocking antibody.
6953 19752032 These findings suggest that infection with H. polygyrus significantly inhibits T1D in NOD mice through CD25- and IL-10-independent mechanisms and also reduces the severity of T1D when administered late after the onset of insulitis.
6954 19752238 Furthermore, suppression of T1D was dependent on beta cell-specific IL-10-secreting CD4+ T cells, although the frequency of GAD65-specific FoxP3-expressing CD4+ T cells was also increased in sIA(g7)-pGAD65 dimer vaccinated NOD mice.
6955 19759824 Glutamic acid decarboxylase-derived epitopes with specific domains expand CD4(+)CD25(+) regulatory T cells.
6956 19783679 Idd5.1 regulates T1D susceptibility in nonobese diabetic (NOD) mice and has two notable candidate genes, Ctla4 and Icos.
6957 19783679 However, further support of this hypothesis is required since the Idd5.1 haplotypes of the diabetes-susceptible NOD and the resistant B10 strains differ throughout Ctla4 and Icos.
6958 19783679 Using haplotype analysis and the generation of novel Idd5.1-congenic strains that differ at the disease-associated Ctla4 exon 2 single-nucleotide polymorphism, we demonstrate that increased expression of liCTLA-4 correlates with reduced T1D susceptibility.
6959 19783679 CTLA-4(-/-) mice expressing liCTLA-4 accumulated fewer activated effector/memory CD4(+) T cells than CTLA-4(-/-) mice and the transgenic mice were partially rescued from the multiorgan inflammation and early lethality caused by the disruption of Ctla4.
6960 19788384 We further show that the inhibitory function is due to the induction of TGF-beta-producing CD4(+)CD25(-) islet-specific iTreg cells against the onset of T1D in NOD mice.
6961 19788505 Disengaging the IL-2 receptor with daclizumab enhances IL-7-mediated proliferation of CD4(+) and CD8(+) T cells.
6962 19788505 Allograft rejection is mainly driven by the production of IL-2, which expands T cells by linking the IL-2 receptor (IL-2R) composed of three subunits: CD25, CD122 and CD132.
6963 19788505 Daclizumab, widely used in immunosuppression, is a humanized anti-CD25 antibody that disrupts IL-2 signaling by binding to CD25 and preventing the assembly of the high-affinity IL-2R.
6964 19788505 Here we show that Daclizumab, while blocking the T-cell response to IL-2, increases CD4(+) and CD8(+) T-cell proliferative response to the homeostatic cytokine IL-7.
6965 19788505 The IL-7R shares CD132 with the IL-2R and blocking of CD25 by Daclizumab results in the enhanced formation of the IL-7R that in turn allows IL-7 to bind more efficiently on the cell surface.
6966 19788505 In addition, treatment with Daclizumab delays the internalization of CD127 upon IL-7 treatment, retaining T-cell sensitivity to IL-7 for a prolonged time.
6967 19788505 Disengaging the IL-2 receptor with daclizumab enhances IL-7-mediated proliferation of CD4(+) and CD8(+) T cells.
6968 19788505 Allograft rejection is mainly driven by the production of IL-2, which expands T cells by linking the IL-2 receptor (IL-2R) composed of three subunits: CD25, CD122 and CD132.
6969 19788505 Daclizumab, widely used in immunosuppression, is a humanized anti-CD25 antibody that disrupts IL-2 signaling by binding to CD25 and preventing the assembly of the high-affinity IL-2R.
6970 19788505 Here we show that Daclizumab, while blocking the T-cell response to IL-2, increases CD4(+) and CD8(+) T-cell proliferative response to the homeostatic cytokine IL-7.
6971 19788505 The IL-7R shares CD132 with the IL-2R and blocking of CD25 by Daclizumab results in the enhanced formation of the IL-7R that in turn allows IL-7 to bind more efficiently on the cell surface.
6972 19788505 In addition, treatment with Daclizumab delays the internalization of CD127 upon IL-7 treatment, retaining T-cell sensitivity to IL-7 for a prolonged time.
6973 19801514 Dominant role of antigen dose in CD4+Foxp3+ regulatory T cell induction and expansion.
6974 19801514 In this study, islet-specific CD4(+) T cells from BDC2.5 TCR-transgenic mice were stimulated in the absence of exogenous cytokine with iDC or mDC pulsed with high- or low-affinity antigenic peptides and examined for Treg induction.
6975 19801514 Both iDC and mDC presenting low peptide doses induced weak TCR signaling via the Akt/mammalian target of rapamycin (mTOR) pathway, resulting in significant expansion of Foxp3(+) Treg.
6976 19801514 The inverse correlation of Foxp3 and Akt/mTOR signaling was also observed in DO11.10 and OT-II TCR-transgenic T cells and was recapitulated with anti-CD3/CD28 stimulation in the absence of DC.
6977 19801514 Dominant role of antigen dose in CD4+Foxp3+ regulatory T cell induction and expansion.
6978 19801514 In this study, islet-specific CD4(+) T cells from BDC2.5 TCR-transgenic mice were stimulated in the absence of exogenous cytokine with iDC or mDC pulsed with high- or low-affinity antigenic peptides and examined for Treg induction.
6979 19801514 Both iDC and mDC presenting low peptide doses induced weak TCR signaling via the Akt/mammalian target of rapamycin (mTOR) pathway, resulting in significant expansion of Foxp3(+) Treg.
6980 19801514 The inverse correlation of Foxp3 and Akt/mTOR signaling was also observed in DO11.10 and OT-II TCR-transgenic T cells and was recapitulated with anti-CD3/CD28 stimulation in the absence of DC.
6981 19806239 Type 1 diabetes development requires both CD4+ and CD8+ T cells and can be reversed by non-depleting antibodies targeting both T cell populations.
6982 19806239 Type 1 diabetes development in NOD mice appears to require both CD4(+) and CD8(+) T cells.
6983 19806239 However, there are some situations where it has been suggested that either CD4(+) or CD8(+) T cells are able to mediate diabetes in the absence of the other population.
6984 19806239 Therefore, we have re-examined the need for both CD4(+) and CD8(+) T cell populations in diabetes development in NOD mice using an antibody to CD8beta.
6985 19806239 In accordance with some other reports, we found that CD4(+) T cells appeared to be able to access the pancreas more readily than CD8(+) T cells.
6986 19806239 Despite the ability of CD4(+) T cells to recruit CD11b class II positive cells, diabetes did not develop in the absence of CD8(+) T cells.
6987 19806239 As both T cell populations are clearly implicated in diabetes development, we have used a combination of non-depleting antibodies to target both CD4-positive and CD8-positive cells and found that this antibody combination was able to reverse diabetes onset in NOD mice as effectively as anti-CD3 antibodies.
6988 19806239 Type 1 diabetes development requires both CD4+ and CD8+ T cells and can be reversed by non-depleting antibodies targeting both T cell populations.
6989 19806239 Type 1 diabetes development in NOD mice appears to require both CD4(+) and CD8(+) T cells.
6990 19806239 However, there are some situations where it has been suggested that either CD4(+) or CD8(+) T cells are able to mediate diabetes in the absence of the other population.
6991 19806239 Therefore, we have re-examined the need for both CD4(+) and CD8(+) T cell populations in diabetes development in NOD mice using an antibody to CD8beta.
6992 19806239 In accordance with some other reports, we found that CD4(+) T cells appeared to be able to access the pancreas more readily than CD8(+) T cells.
6993 19806239 Despite the ability of CD4(+) T cells to recruit CD11b class II positive cells, diabetes did not develop in the absence of CD8(+) T cells.
6994 19806239 As both T cell populations are clearly implicated in diabetes development, we have used a combination of non-depleting antibodies to target both CD4-positive and CD8-positive cells and found that this antibody combination was able to reverse diabetes onset in NOD mice as effectively as anti-CD3 antibodies.
6995 19806239 Type 1 diabetes development requires both CD4+ and CD8+ T cells and can be reversed by non-depleting antibodies targeting both T cell populations.
6996 19806239 Type 1 diabetes development in NOD mice appears to require both CD4(+) and CD8(+) T cells.
6997 19806239 However, there are some situations where it has been suggested that either CD4(+) or CD8(+) T cells are able to mediate diabetes in the absence of the other population.
6998 19806239 Therefore, we have re-examined the need for both CD4(+) and CD8(+) T cell populations in diabetes development in NOD mice using an antibody to CD8beta.
6999 19806239 In accordance with some other reports, we found that CD4(+) T cells appeared to be able to access the pancreas more readily than CD8(+) T cells.
7000 19806239 Despite the ability of CD4(+) T cells to recruit CD11b class II positive cells, diabetes did not develop in the absence of CD8(+) T cells.
7001 19806239 As both T cell populations are clearly implicated in diabetes development, we have used a combination of non-depleting antibodies to target both CD4-positive and CD8-positive cells and found that this antibody combination was able to reverse diabetes onset in NOD mice as effectively as anti-CD3 antibodies.
7002 19806239 Type 1 diabetes development requires both CD4+ and CD8+ T cells and can be reversed by non-depleting antibodies targeting both T cell populations.
7003 19806239 Type 1 diabetes development in NOD mice appears to require both CD4(+) and CD8(+) T cells.
7004 19806239 However, there are some situations where it has been suggested that either CD4(+) or CD8(+) T cells are able to mediate diabetes in the absence of the other population.
7005 19806239 Therefore, we have re-examined the need for both CD4(+) and CD8(+) T cell populations in diabetes development in NOD mice using an antibody to CD8beta.
7006 19806239 In accordance with some other reports, we found that CD4(+) T cells appeared to be able to access the pancreas more readily than CD8(+) T cells.
7007 19806239 Despite the ability of CD4(+) T cells to recruit CD11b class II positive cells, diabetes did not develop in the absence of CD8(+) T cells.
7008 19806239 As both T cell populations are clearly implicated in diabetes development, we have used a combination of non-depleting antibodies to target both CD4-positive and CD8-positive cells and found that this antibody combination was able to reverse diabetes onset in NOD mice as effectively as anti-CD3 antibodies.
7009 19806239 Type 1 diabetes development requires both CD4+ and CD8+ T cells and can be reversed by non-depleting antibodies targeting both T cell populations.
7010 19806239 Type 1 diabetes development in NOD mice appears to require both CD4(+) and CD8(+) T cells.
7011 19806239 However, there are some situations where it has been suggested that either CD4(+) or CD8(+) T cells are able to mediate diabetes in the absence of the other population.
7012 19806239 Therefore, we have re-examined the need for both CD4(+) and CD8(+) T cell populations in diabetes development in NOD mice using an antibody to CD8beta.
7013 19806239 In accordance with some other reports, we found that CD4(+) T cells appeared to be able to access the pancreas more readily than CD8(+) T cells.
7014 19806239 Despite the ability of CD4(+) T cells to recruit CD11b class II positive cells, diabetes did not develop in the absence of CD8(+) T cells.
7015 19806239 As both T cell populations are clearly implicated in diabetes development, we have used a combination of non-depleting antibodies to target both CD4-positive and CD8-positive cells and found that this antibody combination was able to reverse diabetes onset in NOD mice as effectively as anti-CD3 antibodies.
7016 19806239 Type 1 diabetes development requires both CD4+ and CD8+ T cells and can be reversed by non-depleting antibodies targeting both T cell populations.
7017 19806239 Type 1 diabetes development in NOD mice appears to require both CD4(+) and CD8(+) T cells.
7018 19806239 However, there are some situations where it has been suggested that either CD4(+) or CD8(+) T cells are able to mediate diabetes in the absence of the other population.
7019 19806239 Therefore, we have re-examined the need for both CD4(+) and CD8(+) T cell populations in diabetes development in NOD mice using an antibody to CD8beta.
7020 19806239 In accordance with some other reports, we found that CD4(+) T cells appeared to be able to access the pancreas more readily than CD8(+) T cells.
7021 19806239 Despite the ability of CD4(+) T cells to recruit CD11b class II positive cells, diabetes did not develop in the absence of CD8(+) T cells.
7022 19806239 As both T cell populations are clearly implicated in diabetes development, we have used a combination of non-depleting antibodies to target both CD4-positive and CD8-positive cells and found that this antibody combination was able to reverse diabetes onset in NOD mice as effectively as anti-CD3 antibodies.
7023 19806239 Type 1 diabetes development requires both CD4+ and CD8+ T cells and can be reversed by non-depleting antibodies targeting both T cell populations.
7024 19806239 Type 1 diabetes development in NOD mice appears to require both CD4(+) and CD8(+) T cells.
7025 19806239 However, there are some situations where it has been suggested that either CD4(+) or CD8(+) T cells are able to mediate diabetes in the absence of the other population.
7026 19806239 Therefore, we have re-examined the need for both CD4(+) and CD8(+) T cell populations in diabetes development in NOD mice using an antibody to CD8beta.
7027 19806239 In accordance with some other reports, we found that CD4(+) T cells appeared to be able to access the pancreas more readily than CD8(+) T cells.
7028 19806239 Despite the ability of CD4(+) T cells to recruit CD11b class II positive cells, diabetes did not develop in the absence of CD8(+) T cells.
7029 19806239 As both T cell populations are clearly implicated in diabetes development, we have used a combination of non-depleting antibodies to target both CD4-positive and CD8-positive cells and found that this antibody combination was able to reverse diabetes onset in NOD mice as effectively as anti-CD3 antibodies.
7030 19833887 Idd9.1 locus controls the suppressive activity of FoxP3+CD4+CD25+ regulatory T-cells.
7031 19841877 Induction of Foxp3 demethylation increases regulatory CD4+CD25+ T cells and prevents the occurrence of diabetes in mice.
7032 19841877 CD4(+)CD25(+) regulatory T cells (Treg), a subpopulation of CD4(+) T cells, regulate immune responses.
7033 19841877 During T-cell activation in vitro, a DNA demethylation agent 5-Aza-2'-deoxycytydine (DAC) can induce Foxp3 expression in CD4(+)CD25(-) Foxp3(-) cells via altering methylation status of a conserved element in the 5'-untranslated region of the Foxp3 gene.
7034 19841877 In the present study, a short-term treatment with a low dose of DAC significantly increased the ratios of thymic CD4(+)CD8(-) CD25(+) cells or CD4(+)CD8(-) Foxp3(+) cells to CD4(+)CD8(-) cells, and the total numbers of thymic CD4(+)CD8(-)Foxp3(+) Treg cells or CD4(+)CD8(-)CD25(+)Foxp3(+) Treg cells in the thymus in mice.
7035 19841877 DAC-treatment induced the Foxp3 expression and the significant demethylation of a CpG island in the first intron of the Foxp3 gene in CD4(+)CD8(-)CD25(+) cells predominantly.
7036 19841877 Furthermore, CD4(+)CD8(-)CD25(+) thymocytes in DAC-treated mice exhibited enhanced immunosuppressive function than those in control mice.
7037 19841877 Thus, the in vivo treatment with DAC can significantly promote the development of natural thymic CD4(+)CD25(+)Foxp3(+) Treg cells through Foxp3 demethylation, implicating a therapeutic application of DAC in patients suffering from autoimmune diseases.
7038 19841877 Induction of Foxp3 demethylation increases regulatory CD4+CD25+ T cells and prevents the occurrence of diabetes in mice.
7039 19841877 CD4(+)CD25(+) regulatory T cells (Treg), a subpopulation of CD4(+) T cells, regulate immune responses.
7040 19841877 During T-cell activation in vitro, a DNA demethylation agent 5-Aza-2'-deoxycytydine (DAC) can induce Foxp3 expression in CD4(+)CD25(-) Foxp3(-) cells via altering methylation status of a conserved element in the 5'-untranslated region of the Foxp3 gene.
7041 19841877 In the present study, a short-term treatment with a low dose of DAC significantly increased the ratios of thymic CD4(+)CD8(-) CD25(+) cells or CD4(+)CD8(-) Foxp3(+) cells to CD4(+)CD8(-) cells, and the total numbers of thymic CD4(+)CD8(-)Foxp3(+) Treg cells or CD4(+)CD8(-)CD25(+)Foxp3(+) Treg cells in the thymus in mice.
7042 19841877 DAC-treatment induced the Foxp3 expression and the significant demethylation of a CpG island in the first intron of the Foxp3 gene in CD4(+)CD8(-)CD25(+) cells predominantly.
7043 19841877 Furthermore, CD4(+)CD8(-)CD25(+) thymocytes in DAC-treated mice exhibited enhanced immunosuppressive function than those in control mice.
7044 19841877 Thus, the in vivo treatment with DAC can significantly promote the development of natural thymic CD4(+)CD25(+)Foxp3(+) Treg cells through Foxp3 demethylation, implicating a therapeutic application of DAC in patients suffering from autoimmune diseases.
7045 19841877 Induction of Foxp3 demethylation increases regulatory CD4+CD25+ T cells and prevents the occurrence of diabetes in mice.
7046 19841877 CD4(+)CD25(+) regulatory T cells (Treg), a subpopulation of CD4(+) T cells, regulate immune responses.
7047 19841877 During T-cell activation in vitro, a DNA demethylation agent 5-Aza-2'-deoxycytydine (DAC) can induce Foxp3 expression in CD4(+)CD25(-) Foxp3(-) cells via altering methylation status of a conserved element in the 5'-untranslated region of the Foxp3 gene.
7048 19841877 In the present study, a short-term treatment with a low dose of DAC significantly increased the ratios of thymic CD4(+)CD8(-) CD25(+) cells or CD4(+)CD8(-) Foxp3(+) cells to CD4(+)CD8(-) cells, and the total numbers of thymic CD4(+)CD8(-)Foxp3(+) Treg cells or CD4(+)CD8(-)CD25(+)Foxp3(+) Treg cells in the thymus in mice.
7049 19841877 DAC-treatment induced the Foxp3 expression and the significant demethylation of a CpG island in the first intron of the Foxp3 gene in CD4(+)CD8(-)CD25(+) cells predominantly.
7050 19841877 Furthermore, CD4(+)CD8(-)CD25(+) thymocytes in DAC-treated mice exhibited enhanced immunosuppressive function than those in control mice.
7051 19841877 Thus, the in vivo treatment with DAC can significantly promote the development of natural thymic CD4(+)CD25(+)Foxp3(+) Treg cells through Foxp3 demethylation, implicating a therapeutic application of DAC in patients suffering from autoimmune diseases.
7052 19841877 Induction of Foxp3 demethylation increases regulatory CD4+CD25+ T cells and prevents the occurrence of diabetes in mice.
7053 19841877 CD4(+)CD25(+) regulatory T cells (Treg), a subpopulation of CD4(+) T cells, regulate immune responses.
7054 19841877 During T-cell activation in vitro, a DNA demethylation agent 5-Aza-2'-deoxycytydine (DAC) can induce Foxp3 expression in CD4(+)CD25(-) Foxp3(-) cells via altering methylation status of a conserved element in the 5'-untranslated region of the Foxp3 gene.
7055 19841877 In the present study, a short-term treatment with a low dose of DAC significantly increased the ratios of thymic CD4(+)CD8(-) CD25(+) cells or CD4(+)CD8(-) Foxp3(+) cells to CD4(+)CD8(-) cells, and the total numbers of thymic CD4(+)CD8(-)Foxp3(+) Treg cells or CD4(+)CD8(-)CD25(+)Foxp3(+) Treg cells in the thymus in mice.
7056 19841877 DAC-treatment induced the Foxp3 expression and the significant demethylation of a CpG island in the first intron of the Foxp3 gene in CD4(+)CD8(-)CD25(+) cells predominantly.
7057 19841877 Furthermore, CD4(+)CD8(-)CD25(+) thymocytes in DAC-treated mice exhibited enhanced immunosuppressive function than those in control mice.
7058 19841877 Thus, the in vivo treatment with DAC can significantly promote the development of natural thymic CD4(+)CD25(+)Foxp3(+) Treg cells through Foxp3 demethylation, implicating a therapeutic application of DAC in patients suffering from autoimmune diseases.
7059 19841877 Induction of Foxp3 demethylation increases regulatory CD4+CD25+ T cells and prevents the occurrence of diabetes in mice.
7060 19841877 CD4(+)CD25(+) regulatory T cells (Treg), a subpopulation of CD4(+) T cells, regulate immune responses.
7061 19841877 During T-cell activation in vitro, a DNA demethylation agent 5-Aza-2'-deoxycytydine (DAC) can induce Foxp3 expression in CD4(+)CD25(-) Foxp3(-) cells via altering methylation status of a conserved element in the 5'-untranslated region of the Foxp3 gene.
7062 19841877 In the present study, a short-term treatment with a low dose of DAC significantly increased the ratios of thymic CD4(+)CD8(-) CD25(+) cells or CD4(+)CD8(-) Foxp3(+) cells to CD4(+)CD8(-) cells, and the total numbers of thymic CD4(+)CD8(-)Foxp3(+) Treg cells or CD4(+)CD8(-)CD25(+)Foxp3(+) Treg cells in the thymus in mice.
7063 19841877 DAC-treatment induced the Foxp3 expression and the significant demethylation of a CpG island in the first intron of the Foxp3 gene in CD4(+)CD8(-)CD25(+) cells predominantly.
7064 19841877 Furthermore, CD4(+)CD8(-)CD25(+) thymocytes in DAC-treated mice exhibited enhanced immunosuppressive function than those in control mice.
7065 19841877 Thus, the in vivo treatment with DAC can significantly promote the development of natural thymic CD4(+)CD25(+)Foxp3(+) Treg cells through Foxp3 demethylation, implicating a therapeutic application of DAC in patients suffering from autoimmune diseases.
7066 19841877 Induction of Foxp3 demethylation increases regulatory CD4+CD25+ T cells and prevents the occurrence of diabetes in mice.
7067 19841877 CD4(+)CD25(+) regulatory T cells (Treg), a subpopulation of CD4(+) T cells, regulate immune responses.
7068 19841877 During T-cell activation in vitro, a DNA demethylation agent 5-Aza-2'-deoxycytydine (DAC) can induce Foxp3 expression in CD4(+)CD25(-) Foxp3(-) cells via altering methylation status of a conserved element in the 5'-untranslated region of the Foxp3 gene.
7069 19841877 In the present study, a short-term treatment with a low dose of DAC significantly increased the ratios of thymic CD4(+)CD8(-) CD25(+) cells or CD4(+)CD8(-) Foxp3(+) cells to CD4(+)CD8(-) cells, and the total numbers of thymic CD4(+)CD8(-)Foxp3(+) Treg cells or CD4(+)CD8(-)CD25(+)Foxp3(+) Treg cells in the thymus in mice.
7070 19841877 DAC-treatment induced the Foxp3 expression and the significant demethylation of a CpG island in the first intron of the Foxp3 gene in CD4(+)CD8(-)CD25(+) cells predominantly.
7071 19841877 Furthermore, CD4(+)CD8(-)CD25(+) thymocytes in DAC-treated mice exhibited enhanced immunosuppressive function than those in control mice.
7072 19841877 Thus, the in vivo treatment with DAC can significantly promote the development of natural thymic CD4(+)CD25(+)Foxp3(+) Treg cells through Foxp3 demethylation, implicating a therapeutic application of DAC in patients suffering from autoimmune diseases.
7073 19841877 Induction of Foxp3 demethylation increases regulatory CD4+CD25+ T cells and prevents the occurrence of diabetes in mice.
7074 19841877 CD4(+)CD25(+) regulatory T cells (Treg), a subpopulation of CD4(+) T cells, regulate immune responses.
7075 19841877 During T-cell activation in vitro, a DNA demethylation agent 5-Aza-2'-deoxycytydine (DAC) can induce Foxp3 expression in CD4(+)CD25(-) Foxp3(-) cells via altering methylation status of a conserved element in the 5'-untranslated region of the Foxp3 gene.
7076 19841877 In the present study, a short-term treatment with a low dose of DAC significantly increased the ratios of thymic CD4(+)CD8(-) CD25(+) cells or CD4(+)CD8(-) Foxp3(+) cells to CD4(+)CD8(-) cells, and the total numbers of thymic CD4(+)CD8(-)Foxp3(+) Treg cells or CD4(+)CD8(-)CD25(+)Foxp3(+) Treg cells in the thymus in mice.
7077 19841877 DAC-treatment induced the Foxp3 expression and the significant demethylation of a CpG island in the first intron of the Foxp3 gene in CD4(+)CD8(-)CD25(+) cells predominantly.
7078 19841877 Furthermore, CD4(+)CD8(-)CD25(+) thymocytes in DAC-treated mice exhibited enhanced immunosuppressive function than those in control mice.
7079 19841877 Thus, the in vivo treatment with DAC can significantly promote the development of natural thymic CD4(+)CD25(+)Foxp3(+) Treg cells through Foxp3 demethylation, implicating a therapeutic application of DAC in patients suffering from autoimmune diseases.
7080 19855244 Treatment group showed increased serum interleukin (IL)-10 (twofold) and decreased inducible protein-10 and IL-4 (threefold) in luminex.
7081 19855244 Significantly reduced frequency of interferon-gamma (4.5-fold), IL-4 (3.5-fold), IL-2 (2.3-fold), and IL-17 (fourfold) producing T-cell populations were found in ELISPOT.
7082 19855244 OA-treated grafts had significant reduced and delayed infiltration of CD4+ and CD8+ T cells.
7083 19875613 Defects in IL-2R signaling contribute to diminished maintenance of FOXP3 expression in CD4(+)CD25(+) regulatory T-cells of type 1 diabetic subjects.
7084 19886740 Unexpectedly, the ratio of CD4(+):CD8(+) T cells was tightly controlled in the islets throughout diabetogenesis.
7085 19886740 The frequency of IL-4(+) CD4(+) T cells started high but quickly fell to 3% of the population that was maintained with increasing inflammation.
7086 19886740 A significant portion of the CD8(+) T cells were islet-specific glucose-6-phosphatase catalytic subunit-related protein specific in both male and female NOD mice and this population was antigen experienced and increased at high levels of islet inflammation.
7087 19886740 Unexpectedly, the ratio of CD4(+):CD8(+) T cells was tightly controlled in the islets throughout diabetogenesis.
7088 19886740 The frequency of IL-4(+) CD4(+) T cells started high but quickly fell to 3% of the population that was maintained with increasing inflammation.
7089 19886740 A significant portion of the CD8(+) T cells were islet-specific glucose-6-phosphatase catalytic subunit-related protein specific in both male and female NOD mice and this population was antigen experienced and increased at high levels of islet inflammation.
7090 19912978 The FOXP3 molecule is crucial for the generation and maturation of regulatory T cells (Treg) expressing CD4+ and CD25+ molecules.
7091 19917704 Type 1 diabetes is an autoimmune disease mediated by beta cell-specific CD4(+) and CD8(+) T cells.
7092 19917704 TCR-beta and CDR-beta gene usage of single islet-infiltrating g7-mBDC(+) CD4(+) T cells from individual NOD mice showed a restricted repertoire dominated by one or two clones typically expressing TCR beta-chain variable TRBV-15.
7093 19917704 Type 1 diabetes is an autoimmune disease mediated by beta cell-specific CD4(+) and CD8(+) T cells.
7094 19917704 TCR-beta and CDR-beta gene usage of single islet-infiltrating g7-mBDC(+) CD4(+) T cells from individual NOD mice showed a restricted repertoire dominated by one or two clones typically expressing TCR beta-chain variable TRBV-15.
7095 19934031 This report describes population pharmacokinetics/pharmacodynamic (PK/PD) modeling of serum otelixizumab concentrations, changes in CD4+ and CD8+ T-cell counts, and modulation and saturation of CD3/T-cell receptors (TCR) (determined by flow cytometry) after IV administration of otelixizumab in subjects with either type 1 diabetes or psoriasis.
7096 19934031 In diabetic subjects, the otelixizumab serum concentration producing a 50% decrease in peripheral blood counts was 0.0187 microg/mL for CD4+ T cells and 0.0120 microg/mL for CD8+ T cells.
7097 19934031 Corresponding values for psoriatic subjects were much lower: 0.000533 for CD4+ T cells and 0.000269 microg/mL for CD8+ T cells.
7098 19934031 This report describes population pharmacokinetics/pharmacodynamic (PK/PD) modeling of serum otelixizumab concentrations, changes in CD4+ and CD8+ T-cell counts, and modulation and saturation of CD3/T-cell receptors (TCR) (determined by flow cytometry) after IV administration of otelixizumab in subjects with either type 1 diabetes or psoriasis.
7099 19934031 In diabetic subjects, the otelixizumab serum concentration producing a 50% decrease in peripheral blood counts was 0.0187 microg/mL for CD4+ T cells and 0.0120 microg/mL for CD8+ T cells.
7100 19934031 Corresponding values for psoriatic subjects were much lower: 0.000533 for CD4+ T cells and 0.000269 microg/mL for CD8+ T cells.
7101 19934031 This report describes population pharmacokinetics/pharmacodynamic (PK/PD) modeling of serum otelixizumab concentrations, changes in CD4+ and CD8+ T-cell counts, and modulation and saturation of CD3/T-cell receptors (TCR) (determined by flow cytometry) after IV administration of otelixizumab in subjects with either type 1 diabetes or psoriasis.
7102 19934031 In diabetic subjects, the otelixizumab serum concentration producing a 50% decrease in peripheral blood counts was 0.0187 microg/mL for CD4+ T cells and 0.0120 microg/mL for CD8+ T cells.
7103 19934031 Corresponding values for psoriatic subjects were much lower: 0.000533 for CD4+ T cells and 0.000269 microg/mL for CD8+ T cells.
7104 19934373 The non-obese diabetic mouse (NOD) is the most characterized model used to study insulin-dependent type 1 diabetes mellitus (IDDM) and Sjoögren's syndrome (SS).
7105 19934373 In a previous report, we found NOD.E2f1(-/-) mice show a greater progressive development to IDDM and SS compared to NOD mice.
7106 19934373 Our previous data indicated a progressive decrease in regulatory T cells (CD4(+)CD25(+)) and a decrease in the systemic secretion systems for insulin, and saliva was associated with the progression of IDDM and SS.
7107 19934373 Therefore, to define the mechanism of early-onset IDDM SS in E2F-1 deficient NOD mice required further investigation by producing E2F-1 deficient NOD/SCID mice in which the T and B cells do not develop.
7108 19934373 The purpose here was to analyze the essential function of the E2F-1 molecule in the development of IDDM and SS; and the dysfunction of the pancreas islet and salivary gland in the NOD background using NOD/SCID mice.
7109 19934373 We produced NOD/SCID.E2f1(-/-) mice using homologous recombination; determined diabetes development; measured saliva and insulin production; and performed a histological analysis.
7110 19934373 Therefore, we considered a deficiency in E2F-1 induces a decrease in regulatory T cells and an increase in auto-reactive T cells; however, the E2F-1 deficiency is not associated with T and B cells-independent dysfunction of pancreatic beta cell in insulin secretion.
7111 19954774 microRNA-342, microRNA-191 and microRNA-510 are differentially expressed in T regulatory cells of type 1 diabetic patients.
7112 19954774 Tregs were isolated according to CD3+, CD4+, CD25(hi)+ and CD127- by flow cytometry, and miRNA expression profiling was performed using TaqMan Array Human MicroRNA Panel-1 (384-well low density array).
7113 20000848 Here we describe an alternative approach that uses arrays of subnanoliter wells coated with recombinant peptide-loaded MHC class II monomers to isolate and stimulate individual CD4+ T cells in an antigen-specific manner.
7114 20000848 In these experiments, activation was monitored using microengraving to capture two cytokines (IFNgamma and IL-17) released from single cells.
7115 20012396 It has long been appreciated that within the MHC, particular unusual class II genes contribute to the development of T1D in both humans and NOD mice by allowing for the development and functional activation of beta-cell autoreactive CD4 T cells.
7116 20012396 However, studies in NOD mice have revealed that through interactions with other background susceptibility genes, the quite common class I variants (K(d), D(b)) characterizing this strain's H2 ( g7 ) MHC haplotype aberrantly acquire an ability to support the development of beta cell autoreactive CD8 T-cell responses also essential to T1D development.
7117 20045101 Quantitative trait loci for CD4:CD8 lymphocyte ratio are associated with risk of type 1 diabetes and HIV-1 immune control.
7118 20045101 We tested 2.3 million variants for association with five lymphocyte subsets, measured in 2538 individuals from the general population, including CD4+ T cells, CD8+ T cells, CD56+ natural killer (NK) cells, and the derived measure CD4:CD8 ratio.
7119 20045101 The first was located in the major histocompatibility complex (MHC), with multiple SNPs strongly associated with CD4:CD8 ratio (rs2524054, p = 2.1 x 10(-28)).
7120 20045101 The MHC association with CD4:CD8 replicated convincingly (p = 1.4 x 10(-9)) in an independent panel of 988 individuals.
7121 20045101 Conditional analyses indicate that there are two major independent quantitative trait loci (QTL) in the MHC region that regulate CD4:CD8 ratio: one is located in the class I cluster and influences CD8 levels, whereas the second is located in the class II cluster and regulates CD4 levels.
7122 20045101 Jointly, both QTL explained 8% of the variance in CD4:CD8 ratio.
7123 20045101 Quantitative trait loci for CD4:CD8 lymphocyte ratio are associated with risk of type 1 diabetes and HIV-1 immune control.
7124 20045101 We tested 2.3 million variants for association with five lymphocyte subsets, measured in 2538 individuals from the general population, including CD4+ T cells, CD8+ T cells, CD56+ natural killer (NK) cells, and the derived measure CD4:CD8 ratio.
7125 20045101 The first was located in the major histocompatibility complex (MHC), with multiple SNPs strongly associated with CD4:CD8 ratio (rs2524054, p = 2.1 x 10(-28)).
7126 20045101 The MHC association with CD4:CD8 replicated convincingly (p = 1.4 x 10(-9)) in an independent panel of 988 individuals.
7127 20045101 Conditional analyses indicate that there are two major independent quantitative trait loci (QTL) in the MHC region that regulate CD4:CD8 ratio: one is located in the class I cluster and influences CD8 levels, whereas the second is located in the class II cluster and regulates CD4 levels.
7128 20045101 Jointly, both QTL explained 8% of the variance in CD4:CD8 ratio.
7129 20045101 Quantitative trait loci for CD4:CD8 lymphocyte ratio are associated with risk of type 1 diabetes and HIV-1 immune control.
7130 20045101 We tested 2.3 million variants for association with five lymphocyte subsets, measured in 2538 individuals from the general population, including CD4+ T cells, CD8+ T cells, CD56+ natural killer (NK) cells, and the derived measure CD4:CD8 ratio.
7131 20045101 The first was located in the major histocompatibility complex (MHC), with multiple SNPs strongly associated with CD4:CD8 ratio (rs2524054, p = 2.1 x 10(-28)).
7132 20045101 The MHC association with CD4:CD8 replicated convincingly (p = 1.4 x 10(-9)) in an independent panel of 988 individuals.
7133 20045101 Conditional analyses indicate that there are two major independent quantitative trait loci (QTL) in the MHC region that regulate CD4:CD8 ratio: one is located in the class I cluster and influences CD8 levels, whereas the second is located in the class II cluster and regulates CD4 levels.
7134 20045101 Jointly, both QTL explained 8% of the variance in CD4:CD8 ratio.
7135 20045101 Quantitative trait loci for CD4:CD8 lymphocyte ratio are associated with risk of type 1 diabetes and HIV-1 immune control.
7136 20045101 We tested 2.3 million variants for association with five lymphocyte subsets, measured in 2538 individuals from the general population, including CD4+ T cells, CD8+ T cells, CD56+ natural killer (NK) cells, and the derived measure CD4:CD8 ratio.
7137 20045101 The first was located in the major histocompatibility complex (MHC), with multiple SNPs strongly associated with CD4:CD8 ratio (rs2524054, p = 2.1 x 10(-28)).
7138 20045101 The MHC association with CD4:CD8 replicated convincingly (p = 1.4 x 10(-9)) in an independent panel of 988 individuals.
7139 20045101 Conditional analyses indicate that there are two major independent quantitative trait loci (QTL) in the MHC region that regulate CD4:CD8 ratio: one is located in the class I cluster and influences CD8 levels, whereas the second is located in the class II cluster and regulates CD4 levels.
7140 20045101 Jointly, both QTL explained 8% of the variance in CD4:CD8 ratio.
7141 20045101 Quantitative trait loci for CD4:CD8 lymphocyte ratio are associated with risk of type 1 diabetes and HIV-1 immune control.
7142 20045101 We tested 2.3 million variants for association with five lymphocyte subsets, measured in 2538 individuals from the general population, including CD4+ T cells, CD8+ T cells, CD56+ natural killer (NK) cells, and the derived measure CD4:CD8 ratio.
7143 20045101 The first was located in the major histocompatibility complex (MHC), with multiple SNPs strongly associated with CD4:CD8 ratio (rs2524054, p = 2.1 x 10(-28)).
7144 20045101 The MHC association with CD4:CD8 replicated convincingly (p = 1.4 x 10(-9)) in an independent panel of 988 individuals.
7145 20045101 Conditional analyses indicate that there are two major independent quantitative trait loci (QTL) in the MHC region that regulate CD4:CD8 ratio: one is located in the class I cluster and influences CD8 levels, whereas the second is located in the class II cluster and regulates CD4 levels.
7146 20045101 Jointly, both QTL explained 8% of the variance in CD4:CD8 ratio.
7147 20045101 Quantitative trait loci for CD4:CD8 lymphocyte ratio are associated with risk of type 1 diabetes and HIV-1 immune control.
7148 20045101 We tested 2.3 million variants for association with five lymphocyte subsets, measured in 2538 individuals from the general population, including CD4+ T cells, CD8+ T cells, CD56+ natural killer (NK) cells, and the derived measure CD4:CD8 ratio.
7149 20045101 The first was located in the major histocompatibility complex (MHC), with multiple SNPs strongly associated with CD4:CD8 ratio (rs2524054, p = 2.1 x 10(-28)).
7150 20045101 The MHC association with CD4:CD8 replicated convincingly (p = 1.4 x 10(-9)) in an independent panel of 988 individuals.
7151 20045101 Conditional analyses indicate that there are two major independent quantitative trait loci (QTL) in the MHC region that regulate CD4:CD8 ratio: one is located in the class I cluster and influences CD8 levels, whereas the second is located in the class II cluster and regulates CD4 levels.
7152 20045101 Jointly, both QTL explained 8% of the variance in CD4:CD8 ratio.
7153 20054344 We have directly analyzed peripheral CD4+ proinsulin (PI) 76-90 (SLQPLALEGSLQKRG)-specific T cells using soluble fluorescent major histocompatibility complex class II tetramers.
7154 20059577 We evaluated lower-dose regimens of monoclonal anti-CD3 F(ab')(2) in diabetic NOD mice for their efficacy and associated pharmacodynamic (PD) effects, including CD3-T-cell receptor (TCR) complex modulation, complete blood counts and proportions of circulating CD4(+), CD8(+) and CD4(+) FoxP3(+) T cells.
7155 20059577 In treated mice, the proportions of circulating CD4(+) and CD8(+) T cells decreased, whereas the proportions of CD4(+) FoxP3(+) T cells increased; these effects were transient.
7156 20059577 We evaluated lower-dose regimens of monoclonal anti-CD3 F(ab')(2) in diabetic NOD mice for their efficacy and associated pharmacodynamic (PD) effects, including CD3-T-cell receptor (TCR) complex modulation, complete blood counts and proportions of circulating CD4(+), CD8(+) and CD4(+) FoxP3(+) T cells.
7157 20059577 In treated mice, the proportions of circulating CD4(+) and CD8(+) T cells decreased, whereas the proportions of CD4(+) FoxP3(+) T cells increased; these effects were transient.
7158 20061825 NKG2D is a surface receptor expressed on NK cells but also on CD8(+) T cells, gammadelta T cells, and auto-reactive CD4(+)/CD28(-) T cells of patients with rheumatoid arthritis.
7159 20061825 MAb E4 potently antagonized the cytolytic activity of NKL cells against BaF/3-MICA cells expressing NKG2D ligand, and blocked the NKG2D ligand-induced secretion of TNFalpha, IFNgamma and GM-CSF, as well as surface expression of CRTAM by NK cells cultured on immobilized MICA or ULBP-1 ligands.
7160 20066510 A major question is why lymphoproliferation caused by the lpr mutation of Fas and gld mutation of FasL ligand (FasL) is dominated by CD4(-) and CD8(-) double-negative alphabeta T cells (DN T cells) that are otherwise rare components of the peripheral T cell repertoire.
7161 20093428 These findings are consistent with the requirement for both CD4(+) and CD8(+) T cells in the pathogenesis of T1D.
7162 20093428 We have found that H-2K(wm7) molecules are predominantly occupied by the single self-peptide VNDIFERI, derived from the ubiquitous protein histone H2B.
7163 20097866 Functionally significant differences in expression of disease-associated IL-7 receptor alpha haplotypes in CD4 T cells and dendritic cells.
7164 20097866 Common genetic variants of IL-7 receptor alpha (IL-7Ralpha) have recently been shown to affect susceptibility to multiple sclerosis (MS) and type 1 diabetes, and survival following bone marrow transplantation.
7165 20097866 The TSLP/IL-7Ralpha interaction on DCs is known to be critical for production of thymic regulatory T cells, and reduced production of these cells in MS susceptibility haplotypes may be a basis for its association with this disease.
7166 20138735 CD47 and signal regulatory protein (SIRP) interactions have been proposed to take part in autoimmune disease susceptibility.
7167 20138735 Importantly, a recent genome-wide association study for type 1 diabetes susceptibility highlighted the association of the 20p13 region comprising the SIRP cluster, where some of the SIRP proteins encode functional ligands to CD47.
7168 20138735 Interestingly, CD47-deficient mice show a severe reduction in the number of mature CD4(-)CD8(-) T cells, and passive transfer of these CD4(-)CD8(-) T cells is sufficient to restore immune tolerance and prevent diabetes progression.
7169 20138735 Together, these findings constitute an in vivo demonstration that CD47 is involved in diabetes susceptibility and controls the homeostatic regulation of CD4(-)CD8(-) T cells.
7170 20138735 CD47 and signal regulatory protein (SIRP) interactions have been proposed to take part in autoimmune disease susceptibility.
7171 20138735 Importantly, a recent genome-wide association study for type 1 diabetes susceptibility highlighted the association of the 20p13 region comprising the SIRP cluster, where some of the SIRP proteins encode functional ligands to CD47.
7172 20138735 Interestingly, CD47-deficient mice show a severe reduction in the number of mature CD4(-)CD8(-) T cells, and passive transfer of these CD4(-)CD8(-) T cells is sufficient to restore immune tolerance and prevent diabetes progression.
7173 20138735 Together, these findings constitute an in vivo demonstration that CD47 is involved in diabetes susceptibility and controls the homeostatic regulation of CD4(-)CD8(-) T cells.
7174 20139986 In the nonobese diabetic (NOD) mouse model of type 1 diabetes, we have identified the peptide WE14 from chromogranin A (ChgA) as the antigen for highly diabetogenic CD4(+) T cell clones.
7175 20143240 CD4+CD25+(high) regulatory T cells (Tregs) play a pivotal role in the control of the immune response.
7176 20143240 We showed that iTregs from RO T1D subjects had increased expression of Foxp3, E3 ubiquitin ligase (ITCH) and TGF-beta-inducible early gene 1 (TIEG1) compared with control and LS T1D subjects.
7177 20146898 The prevalence of CD4(+), CD8(+), CD25(+) and CD69(+) cells at baseline and after 3 months of add-on therapy was determined.
7178 20146898 The prevalence of regulatory T-cells was detected by two different approaches: forkhead box P3 (FoxP3) positivity; and the number of CD4(+)CD25(+high) cells.
7179 20146898 Simultaneously, the prevalence of activated T-cells (CD4(+)CD69(+) and CD8(+)CD69(+) cells) decreased, whereas that of regulatory T-cells increased.
7180 20146898 The prevalence of CD4(+), CD8(+), CD25(+) and CD69(+) cells at baseline and after 3 months of add-on therapy was determined.
7181 20146898 The prevalence of regulatory T-cells was detected by two different approaches: forkhead box P3 (FoxP3) positivity; and the number of CD4(+)CD25(+high) cells.
7182 20146898 Simultaneously, the prevalence of activated T-cells (CD4(+)CD69(+) and CD8(+)CD69(+) cells) decreased, whereas that of regulatory T-cells increased.
7183 20146898 The prevalence of CD4(+), CD8(+), CD25(+) and CD69(+) cells at baseline and after 3 months of add-on therapy was determined.
7184 20146898 The prevalence of regulatory T-cells was detected by two different approaches: forkhead box P3 (FoxP3) positivity; and the number of CD4(+)CD25(+high) cells.
7185 20146898 Simultaneously, the prevalence of activated T-cells (CD4(+)CD69(+) and CD8(+)CD69(+) cells) decreased, whereas that of regulatory T-cells increased.
7186 20155453 The CFU-GM count in AA group and control group was (74.50+/-9.50)/10(4) cells and (124.25+/-19.80)/10(4) cells respectively under an inverted microscope (P<0.01), and the expression levels of CyclinD3 mRNA and protein in cord blood CD34(+) cells were both down-regulated induced by BM CD4(+) T cell culture supernatant in AA patients.
7187 20155453 BM CD4(+) T cells in AA patients can secret some soluble cytokines that can inhibit proliferation of hematopoietic stem cells by suppressing the expression of Cyclin D3, resulting in hematopoiesis failure.
7188 20155453 The CFU-GM count in AA group and control group was (74.50+/-9.50)/10(4) cells and (124.25+/-19.80)/10(4) cells respectively under an inverted microscope (P<0.01), and the expression levels of CyclinD3 mRNA and protein in cord blood CD34(+) cells were both down-regulated induced by BM CD4(+) T cell culture supernatant in AA patients.
7189 20155453 BM CD4(+) T cells in AA patients can secret some soluble cytokines that can inhibit proliferation of hematopoietic stem cells by suppressing the expression of Cyclin D3, resulting in hematopoiesis failure.
7190 20167539 Dexamethasone downmodulated inflammation and restored normal ratios between CD8(+) and CD4(+)CD25(+)Foxp3(+) cells in the spleen.
7191 20173776 Type 1 diabetes mellitus (T1DM) is a prototypic organ-specific autoimmune disease that results from selective destruction of insulin-secreting beta-cells by immune-mediated inflammation (insulitis), that is, the infiltration of pancreatic islets by autoreactive CD4(+) and CD8(+) T lymphocytes.
7192 20174617 The ligand-activated transcription factor, aryl hydrocarbon receptor (AHR), is a novel inducer of adaptive Tregs. 2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD), the most potent AHR ligand, induces adaptive CD4+CD25+ Tregs during an acute graft-versus-host (GvH) response and prevents the generation of allospecific cytotoxic T lymphocytes.
7193 20174617 In this study, we show that chronic treatment of NOD mice with TCDD potently suppresses the development of autoimmune Type 1 diabetes in parallel with greatly reduced pancreatic islet insulitis and an expanded population of CD4+CD25+Foxp3+ cells in the pancreatic lymph nodes.
7194 20174617 The ligand-activated transcription factor, aryl hydrocarbon receptor (AHR), is a novel inducer of adaptive Tregs. 2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD), the most potent AHR ligand, induces adaptive CD4+CD25+ Tregs during an acute graft-versus-host (GvH) response and prevents the generation of allospecific cytotoxic T lymphocytes.
7195 20174617 In this study, we show that chronic treatment of NOD mice with TCDD potently suppresses the development of autoimmune Type 1 diabetes in parallel with greatly reduced pancreatic islet insulitis and an expanded population of CD4+CD25+Foxp3+ cells in the pancreatic lymph nodes.
7196 20190756 A set of autoreactive CD4(+) T cells specific for an insulin peptide, with the noteworthy feature of not recognizing the insulin protein when processed by antigen-presenting cells (APCs), escaped thymic control, participated in diabetes and caused disease.
7197 20299469 Idd9.2 and Idd9.3 protective alleles function in CD4+ T-cells and nonlymphoid cells to prevent expansion of pathogenic islet-specific CD8+ T-cells.
7198 20299476 Naturally arising human CD4 T-cells that recognize islet autoantigens and secrete interleukin-10 regulate proinflammatory T-cell responses via linked suppression.
7199 20309012 On the other hand, VIP-treated NOD mice show an increase in the proportion of CD4(+)CD25(+) cells in the spleen.
7200 20348424 High titers of autoantibodies against glutamic acid decarboxylase (GAD) 65 are commonly observed in patients suffering from type 1 diabetes as well as stiff-person syndrome (SPS), a disorder that affects the CNS, and a variant of SPS, progressive encephalomyelitis with rigidity and myoclonus.
7201 20348424 Although there is a considerable amount of data focusing on the role of GAD65-specific CD4(+) T cells in type 1 diabetes, little is known about their role in SPS.
7202 20348424 In this study, we show that mice possessing a monoclonal GAD65-specific CD4(+) T cell population (4B5, PA19.9G11, or PA17.9G7) develop a lethal encephalomyelitis-like disease in the absence of any other T cells or B cells.
7203 20348424 GAD65-reactive CD4(+) T cells were found throughout the CNS in direct concordance with GAD65 expression and activated microglia: proximal to the circumventricular organs at the interface between the brain parenchyma and the blood-brain barrier.
7204 20348424 In addition, GAD65-specific CD4(+) T cells isolated from the brain were activated and produced IFN-gamma.
7205 20348424 These findings suggest that GAD65-reactive CD4(+) T cells alone mediate a lethal encephalomyelitis-like disease that may serve as a useful model to study GAD65-mediated diseases of the CNS.
7206 20348424 High titers of autoantibodies against glutamic acid decarboxylase (GAD) 65 are commonly observed in patients suffering from type 1 diabetes as well as stiff-person syndrome (SPS), a disorder that affects the CNS, and a variant of SPS, progressive encephalomyelitis with rigidity and myoclonus.
7207 20348424 Although there is a considerable amount of data focusing on the role of GAD65-specific CD4(+) T cells in type 1 diabetes, little is known about their role in SPS.
7208 20348424 In this study, we show that mice possessing a monoclonal GAD65-specific CD4(+) T cell population (4B5, PA19.9G11, or PA17.9G7) develop a lethal encephalomyelitis-like disease in the absence of any other T cells or B cells.
7209 20348424 GAD65-reactive CD4(+) T cells were found throughout the CNS in direct concordance with GAD65 expression and activated microglia: proximal to the circumventricular organs at the interface between the brain parenchyma and the blood-brain barrier.
7210 20348424 In addition, GAD65-specific CD4(+) T cells isolated from the brain were activated and produced IFN-gamma.
7211 20348424 These findings suggest that GAD65-reactive CD4(+) T cells alone mediate a lethal encephalomyelitis-like disease that may serve as a useful model to study GAD65-mediated diseases of the CNS.
7212 20348424 High titers of autoantibodies against glutamic acid decarboxylase (GAD) 65 are commonly observed in patients suffering from type 1 diabetes as well as stiff-person syndrome (SPS), a disorder that affects the CNS, and a variant of SPS, progressive encephalomyelitis with rigidity and myoclonus.
7213 20348424 Although there is a considerable amount of data focusing on the role of GAD65-specific CD4(+) T cells in type 1 diabetes, little is known about their role in SPS.
7214 20348424 In this study, we show that mice possessing a monoclonal GAD65-specific CD4(+) T cell population (4B5, PA19.9G11, or PA17.9G7) develop a lethal encephalomyelitis-like disease in the absence of any other T cells or B cells.
7215 20348424 GAD65-reactive CD4(+) T cells were found throughout the CNS in direct concordance with GAD65 expression and activated microglia: proximal to the circumventricular organs at the interface between the brain parenchyma and the blood-brain barrier.
7216 20348424 In addition, GAD65-specific CD4(+) T cells isolated from the brain were activated and produced IFN-gamma.
7217 20348424 These findings suggest that GAD65-reactive CD4(+) T cells alone mediate a lethal encephalomyelitis-like disease that may serve as a useful model to study GAD65-mediated diseases of the CNS.
7218 20348424 High titers of autoantibodies against glutamic acid decarboxylase (GAD) 65 are commonly observed in patients suffering from type 1 diabetes as well as stiff-person syndrome (SPS), a disorder that affects the CNS, and a variant of SPS, progressive encephalomyelitis with rigidity and myoclonus.
7219 20348424 Although there is a considerable amount of data focusing on the role of GAD65-specific CD4(+) T cells in type 1 diabetes, little is known about their role in SPS.
7220 20348424 In this study, we show that mice possessing a monoclonal GAD65-specific CD4(+) T cell population (4B5, PA19.9G11, or PA17.9G7) develop a lethal encephalomyelitis-like disease in the absence of any other T cells or B cells.
7221 20348424 GAD65-reactive CD4(+) T cells were found throughout the CNS in direct concordance with GAD65 expression and activated microglia: proximal to the circumventricular organs at the interface between the brain parenchyma and the blood-brain barrier.
7222 20348424 In addition, GAD65-specific CD4(+) T cells isolated from the brain were activated and produced IFN-gamma.
7223 20348424 These findings suggest that GAD65-reactive CD4(+) T cells alone mediate a lethal encephalomyelitis-like disease that may serve as a useful model to study GAD65-mediated diseases of the CNS.
7224 20348424 High titers of autoantibodies against glutamic acid decarboxylase (GAD) 65 are commonly observed in patients suffering from type 1 diabetes as well as stiff-person syndrome (SPS), a disorder that affects the CNS, and a variant of SPS, progressive encephalomyelitis with rigidity and myoclonus.
7225 20348424 Although there is a considerable amount of data focusing on the role of GAD65-specific CD4(+) T cells in type 1 diabetes, little is known about their role in SPS.
7226 20348424 In this study, we show that mice possessing a monoclonal GAD65-specific CD4(+) T cell population (4B5, PA19.9G11, or PA17.9G7) develop a lethal encephalomyelitis-like disease in the absence of any other T cells or B cells.
7227 20348424 GAD65-reactive CD4(+) T cells were found throughout the CNS in direct concordance with GAD65 expression and activated microglia: proximal to the circumventricular organs at the interface between the brain parenchyma and the blood-brain barrier.
7228 20348424 In addition, GAD65-specific CD4(+) T cells isolated from the brain were activated and produced IFN-gamma.
7229 20348424 These findings suggest that GAD65-reactive CD4(+) T cells alone mediate a lethal encephalomyelitis-like disease that may serve as a useful model to study GAD65-mediated diseases of the CNS.
7230 20363968 We injected NOD mice with mycobacterial products s.c. and analyzed the IL-17-producing cells from the draining lymph nodes and spleen by restimulating whole-cell populations or CD4(+) T cells in vitro with or without IL-17-polarizing cytokines.
7231 20363968 Mice receiving CFA had a concomitant rise in the level of IL-17, IL-22, IL-10, and IFN-gamma in the draining lymph node and spleen.
7232 20363968 Adoptive transfer of splenocytes from CFA-injected NOD mice polarized with TGF-beta plus IL-6 or IL-23 delayed the development of diabetes in recipient mice.
7233 20363968 Injection of CFA also changed the cytokine profile of cells in pancreatic tissue by increasing IL-17, IL-10, and IFN-gamma cytokine gene expression.
7234 20370569 A low antigen dose selectively promotes expansion of high-avidity autoreactive T cells with distinct phenotypic characteristics: a study of human autoreactive CD4+T cells specific for GAD65.
7235 20370569 We addressed the question, how antigen dose shapes the diversity of CD4+ autoreactive T cells specific for glutamate decarboxylase 65 (GAD65) in a healthy HLA-DR*0404+ individual, with a persistent GAD65-specific T-cell response.
7236 20370569 CD4+T cells from this subject were stimulated with decreasing concentrations of the GAD65 555-567 (557I) peptide, and T-cell clones were derived from the tetramer-binding cell population.
7237 20370569 High IL-13 and IL-10 production by GAD65-reactive T cells suggests a more anti-inflammatory profile of this healthy individual underlying protection from T1D.
7238 20370569 A low antigen dose selectively promotes expansion of high-avidity autoreactive T cells with distinct phenotypic characteristics: a study of human autoreactive CD4+T cells specific for GAD65.
7239 20370569 We addressed the question, how antigen dose shapes the diversity of CD4+ autoreactive T cells specific for glutamate decarboxylase 65 (GAD65) in a healthy HLA-DR*0404+ individual, with a persistent GAD65-specific T-cell response.
7240 20370569 CD4+T cells from this subject were stimulated with decreasing concentrations of the GAD65 555-567 (557I) peptide, and T-cell clones were derived from the tetramer-binding cell population.
7241 20370569 High IL-13 and IL-10 production by GAD65-reactive T cells suggests a more anti-inflammatory profile of this healthy individual underlying protection from T1D.
7242 20370569 A low antigen dose selectively promotes expansion of high-avidity autoreactive T cells with distinct phenotypic characteristics: a study of human autoreactive CD4+T cells specific for GAD65.
7243 20370569 We addressed the question, how antigen dose shapes the diversity of CD4+ autoreactive T cells specific for glutamate decarboxylase 65 (GAD65) in a healthy HLA-DR*0404+ individual, with a persistent GAD65-specific T-cell response.
7244 20370569 CD4+T cells from this subject were stimulated with decreasing concentrations of the GAD65 555-567 (557I) peptide, and T-cell clones were derived from the tetramer-binding cell population.
7245 20370569 High IL-13 and IL-10 production by GAD65-reactive T cells suggests a more anti-inflammatory profile of this healthy individual underlying protection from T1D.
7246 20440443 CD4+ and CD8+ T-cell infiltration and interleukin (IL)-2 mRNA levels were decreased in TMC/CsA-cotreated rats, whereas IL-10 levels were increased.
7247 20444936 Inhibition of dipeptidyl peptidase IV (DPP-IV) activity by NVP-DPP728, a DPP-IV inhibitor, improves the therapeutic efficacy of glucagon-like peptide-1 (GLP-1).
7248 20444936 Regulatory T cells in thymus and secondary lymph nodes, TGF-beta1 and GLP-1 in plasma, and the insulin content in the pancreas were measured.
7249 20444936 Insulitis was reduced and the percentage of CD4(+)CD25(+)FoxP3(+) regulatory T cells was increased in treated NOD mice with remission.
7250 20444936 Plasma TGF-beta1 and GLP-1, the insulin content, and both insulin(+) and BrdU(+) beta-cells in pancreas were also significantly increased.
7251 20444936 In conclusion, NVP-DPP728 treatment can reverse new-onset diabetes in NOD mice by reducing insulitis, increasing CD4(+)CD25(+)FoxP3(+) regulatory T cells, and stimulating beta-cell replication. beta-Cell replication is not associated with the degree of inflammation in NVP-DPP728-treated NOD mice.
7252 20444936 Inhibition of dipeptidyl peptidase IV (DPP-IV) activity by NVP-DPP728, a DPP-IV inhibitor, improves the therapeutic efficacy of glucagon-like peptide-1 (GLP-1).
7253 20444936 Regulatory T cells in thymus and secondary lymph nodes, TGF-beta1 and GLP-1 in plasma, and the insulin content in the pancreas were measured.
7254 20444936 Insulitis was reduced and the percentage of CD4(+)CD25(+)FoxP3(+) regulatory T cells was increased in treated NOD mice with remission.
7255 20444936 Plasma TGF-beta1 and GLP-1, the insulin content, and both insulin(+) and BrdU(+) beta-cells in pancreas were also significantly increased.
7256 20444936 In conclusion, NVP-DPP728 treatment can reverse new-onset diabetes in NOD mice by reducing insulitis, increasing CD4(+)CD25(+)FoxP3(+) regulatory T cells, and stimulating beta-cell replication. beta-Cell replication is not associated with the degree of inflammation in NVP-DPP728-treated NOD mice.
7257 20445103 Leptin-deficient ob/ob mice are overweight, develop insulin resistance, and serve as a model for type 2 diabetes (T2D).
7258 20445103 We induced TGF-beta-dependent CD4(+) latency-associated peptide (LAP)-positive Tregs by oral administration of anti-CD3 antibody plus beta-glucosylceramide.
7259 20445103 Adoptive transfer of orally induced CD4(+)LAP(+) Tregs ameliorated metabolic and cytokine abnormalities.
7260 20445103 Leptin-deficient ob/ob mice are overweight, develop insulin resistance, and serve as a model for type 2 diabetes (T2D).
7261 20445103 We induced TGF-beta-dependent CD4(+) latency-associated peptide (LAP)-positive Tregs by oral administration of anti-CD3 antibody plus beta-glucosylceramide.
7262 20445103 Adoptive transfer of orally induced CD4(+)LAP(+) Tregs ameliorated metabolic and cytokine abnormalities.
7263 20491795 The model uses ordinary differential and algebraic equations to represent the pancreas and PLN as well as dynamic interactions of multiple cell types (e.g. dendritic cells, macrophages, CD4+ T lymphocytes, CD8+ T lymphocytes, regulatory T cells, beta cells).
7264 20503254 Both CD4(+) and CD8(+) T lymphocytes play a crucial role in the autoimmune process leading to T1D.
7265 20503259 Characterization of CD4+ T cells specific for glutamic acid decarboxylase (GAD65) and proinsulin in a patient with stiff-person syndrome but without type 1 diabetes.
7266 20529823 The aim of our study was to test the hypothesis that T regulatory cells express pro- and anti-inflammatory cytokines, elements of cytotoxicity and OX40/4-1BB molecules.
7267 20529823 Concurrently with the flow cytometric assessment of Tregs we separated CD4+CD25+CD127dim/- cells for further mRNA analysis. mRNA levels for transcription factor FoxP3, pro- and anti-inflammatory cytokines (interferon gamma, interleukin-2, interleukin-4, interleukin-10, transforming growth factor beta1 and tumor necrosis factor alpha), activatory molecules (OX40, 4-1BB) and elements of cytotoxicity (granzyme B, perforin 1) were determined by real-time PCR technique.
7268 20529823 Lower OX40 and higher 4-1BB mRNA but not protein levels in Treg cells in diabetic patients compared to the healthy children were noted.
7269 20529823 Our observations confirm the presence of mRNA for pro- and anti-inflammatory cytokines in CD4+CD25+CD127dim/- cells in the peripheral blood of children with T1DM.
7270 20529823 The aim of our study was to test the hypothesis that T regulatory cells express pro- and anti-inflammatory cytokines, elements of cytotoxicity and OX40/4-1BB molecules.
7271 20529823 Concurrently with the flow cytometric assessment of Tregs we separated CD4+CD25+CD127dim/- cells for further mRNA analysis. mRNA levels for transcription factor FoxP3, pro- and anti-inflammatory cytokines (interferon gamma, interleukin-2, interleukin-4, interleukin-10, transforming growth factor beta1 and tumor necrosis factor alpha), activatory molecules (OX40, 4-1BB) and elements of cytotoxicity (granzyme B, perforin 1) were determined by real-time PCR technique.
7272 20529823 Lower OX40 and higher 4-1BB mRNA but not protein levels in Treg cells in diabetic patients compared to the healthy children were noted.
7273 20529823 Our observations confirm the presence of mRNA for pro- and anti-inflammatory cytokines in CD4+CD25+CD127dim/- cells in the peripheral blood of children with T1DM.
7274 20531289 Furthermore, RSG treatment augmented the levels of the anti-inflammatory cytokine interleukin (IL)-10 and increased the recruitment of CD4+ CD25+ FoxP3+ cells, suggesting that regulatory T cells mediated the protection of the peritoneal membrane.
7275 20540111 Since most of the glutamic acid decarboxylase 65 (GAD65)-specific CD4(+) T cells in the NOD mouse are tolerogenic but unable to function in an autoimmune environment, we have activated a silent, monoclonal T-regulatory cell population (GAD65(217-230)-specific CD4(+) T cells) using a soluble I-A(αβ) (g7)/GAD65(217-230)/Fcγ2a dimer, and measured the effect on the ongoing polyclonal diabetogenic T-cell process.
7276 20540111 Activated GAD65(217-230)-specific T cells and a fraction of the diabetogenic (B(9-23)-specific) T cells were polarized toward the IL-10-secreting T-regulatory type 1-like function in the pancreas of diabetic NOD mice.
7277 20544263 IL-10/TGF-beta-treated dendritic cells, pulsed with insulin, specifically reduce the response to insulin of CD4+ effector/memory T cells from type 1 diabetic individuals.
7278 20544729 In this study, we provide evidence that the Icos and Icosl genes contribute to the diabetes process.
7279 20544729 Protection from diabetes in ICOS(-/-) and ICOSL(-/-) NOD mice was unexpectedly associated with the development of an autoimmune disorder of the neuro-muscular system, characterized by myositis, sensory ganglionitis and, to a reduced extent, inflammatory infiltrates in the CNS.
7280 20544729 This syndrome was reproduced upon adoptive transfer of CD4(+) and CD8(+) T cells from diseased donors to naïve NOD.scid recipients.
7281 20544729 Taken together, our findings indicate that costimulation signals play a key role in regulating immune tolerance in peripheral tissues and that the ICOS/ICOSL costimulatory pathway influences the balance between Treg and diabetogenic effector T cells.
7282 20561438 This study was aimed to detect the changes of peripheral CD4(+) T lymphocytes, CD8(+) T lymphocytes, CD4(+)/CD8(+) T lymphocytes and NK cells before and after T1D mice were treated with syn-BMT, and to investigate the effects of these cells in T1D and the effects of syn-BMT-inducing immunotolerance.
7283 20561438 On 30 day after syn-BMT, peripheral proportion of CD4(+) T lymphocytes, CD8(+) T lymphocytes, CD4(+)/CD8(+) T lymphocytes and NK cells were detected by flow cytometry.
7284 20561438 The proportion of peripheral CD4(+) T lymphocytes, CD4(+)/CD8(+) T lymphocytes, NK cells all increased in new-onset diabetic mice (p < 0.01), while the proportion of peripheral CD8(+) T lymphocytes decreased (p < 0.01).
7285 20561438 The ratio of CD4(+)/CD8(+) T lymphocytes and proportion of NK cells were both obviously lower than that in DC and NC mice (p < 0.01).
7286 20561438 On early period of diabetes onset, the proportions of CD4(+) T lymphocytes and NK cells, the ratio of CD4(+)/CD8(+) T lymphocytes increase, while proportion of CD8(+) T lymphocytes decreases in peripheral blood which mye be associated with onset of diabetes.
7287 20561438 This study was aimed to detect the changes of peripheral CD4(+) T lymphocytes, CD8(+) T lymphocytes, CD4(+)/CD8(+) T lymphocytes and NK cells before and after T1D mice were treated with syn-BMT, and to investigate the effects of these cells in T1D and the effects of syn-BMT-inducing immunotolerance.
7288 20561438 On 30 day after syn-BMT, peripheral proportion of CD4(+) T lymphocytes, CD8(+) T lymphocytes, CD4(+)/CD8(+) T lymphocytes and NK cells were detected by flow cytometry.
7289 20561438 The proportion of peripheral CD4(+) T lymphocytes, CD4(+)/CD8(+) T lymphocytes, NK cells all increased in new-onset diabetic mice (p < 0.01), while the proportion of peripheral CD8(+) T lymphocytes decreased (p < 0.01).
7290 20561438 The ratio of CD4(+)/CD8(+) T lymphocytes and proportion of NK cells were both obviously lower than that in DC and NC mice (p < 0.01).
7291 20561438 On early period of diabetes onset, the proportions of CD4(+) T lymphocytes and NK cells, the ratio of CD4(+)/CD8(+) T lymphocytes increase, while proportion of CD8(+) T lymphocytes decreases in peripheral blood which mye be associated with onset of diabetes.
7292 20561438 This study was aimed to detect the changes of peripheral CD4(+) T lymphocytes, CD8(+) T lymphocytes, CD4(+)/CD8(+) T lymphocytes and NK cells before and after T1D mice were treated with syn-BMT, and to investigate the effects of these cells in T1D and the effects of syn-BMT-inducing immunotolerance.
7293 20561438 On 30 day after syn-BMT, peripheral proportion of CD4(+) T lymphocytes, CD8(+) T lymphocytes, CD4(+)/CD8(+) T lymphocytes and NK cells were detected by flow cytometry.
7294 20561438 The proportion of peripheral CD4(+) T lymphocytes, CD4(+)/CD8(+) T lymphocytes, NK cells all increased in new-onset diabetic mice (p < 0.01), while the proportion of peripheral CD8(+) T lymphocytes decreased (p < 0.01).
7295 20561438 The ratio of CD4(+)/CD8(+) T lymphocytes and proportion of NK cells were both obviously lower than that in DC and NC mice (p < 0.01).
7296 20561438 On early period of diabetes onset, the proportions of CD4(+) T lymphocytes and NK cells, the ratio of CD4(+)/CD8(+) T lymphocytes increase, while proportion of CD8(+) T lymphocytes decreases in peripheral blood which mye be associated with onset of diabetes.
7297 20561438 This study was aimed to detect the changes of peripheral CD4(+) T lymphocytes, CD8(+) T lymphocytes, CD4(+)/CD8(+) T lymphocytes and NK cells before and after T1D mice were treated with syn-BMT, and to investigate the effects of these cells in T1D and the effects of syn-BMT-inducing immunotolerance.
7298 20561438 On 30 day after syn-BMT, peripheral proportion of CD4(+) T lymphocytes, CD8(+) T lymphocytes, CD4(+)/CD8(+) T lymphocytes and NK cells were detected by flow cytometry.
7299 20561438 The proportion of peripheral CD4(+) T lymphocytes, CD4(+)/CD8(+) T lymphocytes, NK cells all increased in new-onset diabetic mice (p < 0.01), while the proportion of peripheral CD8(+) T lymphocytes decreased (p < 0.01).
7300 20561438 The ratio of CD4(+)/CD8(+) T lymphocytes and proportion of NK cells were both obviously lower than that in DC and NC mice (p < 0.01).
7301 20561438 On early period of diabetes onset, the proportions of CD4(+) T lymphocytes and NK cells, the ratio of CD4(+)/CD8(+) T lymphocytes increase, while proportion of CD8(+) T lymphocytes decreases in peripheral blood which mye be associated with onset of diabetes.
7302 20561438 This study was aimed to detect the changes of peripheral CD4(+) T lymphocytes, CD8(+) T lymphocytes, CD4(+)/CD8(+) T lymphocytes and NK cells before and after T1D mice were treated with syn-BMT, and to investigate the effects of these cells in T1D and the effects of syn-BMT-inducing immunotolerance.
7303 20561438 On 30 day after syn-BMT, peripheral proportion of CD4(+) T lymphocytes, CD8(+) T lymphocytes, CD4(+)/CD8(+) T lymphocytes and NK cells were detected by flow cytometry.
7304 20561438 The proportion of peripheral CD4(+) T lymphocytes, CD4(+)/CD8(+) T lymphocytes, NK cells all increased in new-onset diabetic mice (p < 0.01), while the proportion of peripheral CD8(+) T lymphocytes decreased (p < 0.01).
7305 20561438 The ratio of CD4(+)/CD8(+) T lymphocytes and proportion of NK cells were both obviously lower than that in DC and NC mice (p < 0.01).
7306 20561438 On early period of diabetes onset, the proportions of CD4(+) T lymphocytes and NK cells, the ratio of CD4(+)/CD8(+) T lymphocytes increase, while proportion of CD8(+) T lymphocytes decreases in peripheral blood which mye be associated with onset of diabetes.
7307 20565292 Impaired antiviral CD8 and CD4 T-cell responses are often associated with chronic viral infections.
7308 20565292 Here we demonstrate that CD103, an alpha E integrin necessary for T-cell homing and retention in the gut and other epithelia expressed by the majority of naïve CD8(+), and CD4(+)CD25(+) T cells and some DC subsets, is unnecessary for controlling T-cell responses during chronic lymphocytic choriomeningitis virus clone 13 (LCMV cl13) infection.
7309 20565292 T-cell analysis following viral infection showed that the primary as well as the memory CD8(+) and CD4(+) T-cell responses among CD103-sufficient and CD103-deficient mice were identical.
7310 20565292 Interestingly, CD103 levels on the effector CD8(+) T cells became reduced soon after virus infection, with a small proportion of cells co-expressing PD-1 and CD103.
7311 20565292 In contrast, although no substantial differences in the frequency and number of the CD4(+)CD25(+) cell population were seen, CD103 expression increased significantly over time in this population, correlating with viral persistence.
7312 20565292 Impaired antiviral CD8 and CD4 T-cell responses are often associated with chronic viral infections.
7313 20565292 Here we demonstrate that CD103, an alpha E integrin necessary for T-cell homing and retention in the gut and other epithelia expressed by the majority of naïve CD8(+), and CD4(+)CD25(+) T cells and some DC subsets, is unnecessary for controlling T-cell responses during chronic lymphocytic choriomeningitis virus clone 13 (LCMV cl13) infection.
7314 20565292 T-cell analysis following viral infection showed that the primary as well as the memory CD8(+) and CD4(+) T-cell responses among CD103-sufficient and CD103-deficient mice were identical.
7315 20565292 Interestingly, CD103 levels on the effector CD8(+) T cells became reduced soon after virus infection, with a small proportion of cells co-expressing PD-1 and CD103.
7316 20565292 In contrast, although no substantial differences in the frequency and number of the CD4(+)CD25(+) cell population were seen, CD103 expression increased significantly over time in this population, correlating with viral persistence.
7317 20565292 Impaired antiviral CD8 and CD4 T-cell responses are often associated with chronic viral infections.
7318 20565292 Here we demonstrate that CD103, an alpha E integrin necessary for T-cell homing and retention in the gut and other epithelia expressed by the majority of naïve CD8(+), and CD4(+)CD25(+) T cells and some DC subsets, is unnecessary for controlling T-cell responses during chronic lymphocytic choriomeningitis virus clone 13 (LCMV cl13) infection.
7319 20565292 T-cell analysis following viral infection showed that the primary as well as the memory CD8(+) and CD4(+) T-cell responses among CD103-sufficient and CD103-deficient mice were identical.
7320 20565292 Interestingly, CD103 levels on the effector CD8(+) T cells became reduced soon after virus infection, with a small proportion of cells co-expressing PD-1 and CD103.
7321 20565292 In contrast, although no substantial differences in the frequency and number of the CD4(+)CD25(+) cell population were seen, CD103 expression increased significantly over time in this population, correlating with viral persistence.
7322 20565292 Impaired antiviral CD8 and CD4 T-cell responses are often associated with chronic viral infections.
7323 20565292 Here we demonstrate that CD103, an alpha E integrin necessary for T-cell homing and retention in the gut and other epithelia expressed by the majority of naïve CD8(+), and CD4(+)CD25(+) T cells and some DC subsets, is unnecessary for controlling T-cell responses during chronic lymphocytic choriomeningitis virus clone 13 (LCMV cl13) infection.
7324 20565292 T-cell analysis following viral infection showed that the primary as well as the memory CD8(+) and CD4(+) T-cell responses among CD103-sufficient and CD103-deficient mice were identical.
7325 20565292 Interestingly, CD103 levels on the effector CD8(+) T cells became reduced soon after virus infection, with a small proportion of cells co-expressing PD-1 and CD103.
7326 20565292 In contrast, although no substantial differences in the frequency and number of the CD4(+)CD25(+) cell population were seen, CD103 expression increased significantly over time in this population, correlating with viral persistence.
7327 20599916 Daily injections of F-FTS led to an increase in both the number and the migratory capacity of pancreatic Foxp3(+)CD4(+)CD25(+) Treg, while cleaved caspase 3 in the pancreas were significantly decreased, indicating reduced apoptosis.
7328 20603635 In particular, CD4(-)CD8(-) (double negative (DN)) T cells, which compose 1-3% of the total number of T lymphocytes, exhibit prominent antigen-specific immune tolerance properties and confer immune tolerance in models of allografts and xenografts.
7329 20639483 CD4+ CD25+ regulatory T cells prevent type 1 diabetes preceded by dendritic cell-dominant invasive insulitis by affecting chemotaxis and local invasiveness of dendritic cells.
7330 20639483 Although CD4(+)CD25(+) regulatory T cells (nTregs) induce tolerance that inhibits insulitis and T1D, the in vivo cellular mechanisms underlying this process remain largely unclear.
7331 20639483 However, ISL-DCs from nTreg-deficient recipient mice showed increased in vitro migration toward CCL19 and CCL21.
7332 20639483 CD4+ CD25+ regulatory T cells prevent type 1 diabetes preceded by dendritic cell-dominant invasive insulitis by affecting chemotaxis and local invasiveness of dendritic cells.
7333 20639483 Although CD4(+)CD25(+) regulatory T cells (nTregs) induce tolerance that inhibits insulitis and T1D, the in vivo cellular mechanisms underlying this process remain largely unclear.
7334 20639483 However, ISL-DCs from nTreg-deficient recipient mice showed increased in vitro migration toward CCL19 and CCL21.
7335 20646763 CD40 glycoforms and TNF-receptors 1 and 2 in the formation of CD40 receptor(s) in autoimmunity.
7336 20646763 We described a CD4(+)CD40(+) T cell (Th40) subset which is expanded in autoimmunity and is necessary and sufficient in transferring type 1 diabetes.
7337 20646763 Here we demonstrate that several CD40 receptor constellations exist on CD4 T cells.
7338 20646763 Interestingly, CD40 stimulation induces some CD40 receptor constellations that contain TNF-receptors 1 and 2 and targeting of those alters CD40 signaling outcomes in NOD Th40 cells.
7339 20646763 CD40 glycoforms and TNF-receptors 1 and 2 in the formation of CD40 receptor(s) in autoimmunity.
7340 20646763 We described a CD4(+)CD40(+) T cell (Th40) subset which is expanded in autoimmunity and is necessary and sufficient in transferring type 1 diabetes.
7341 20646763 Here we demonstrate that several CD40 receptor constellations exist on CD4 T cells.
7342 20646763 Interestingly, CD40 stimulation induces some CD40 receptor constellations that contain TNF-receptors 1 and 2 and targeting of those alters CD40 signaling outcomes in NOD Th40 cells.
7343 20686126 DC-induced Treg division required IL-2, which was provided by conventional CD4(+) T cells through an MHC class II (MHC II)-dependent interaction with DCs.
7344 20686126 Provision of exogenous IL-2 obviated the need for conventional CD4(+) T cells in the induction of Treg proliferation, but this process still required a contact-dependent but MHC II-independent interaction between DCs and Tregs.
7345 20686126 DC-induced Treg division required IL-2, which was provided by conventional CD4(+) T cells through an MHC class II (MHC II)-dependent interaction with DCs.
7346 20686126 Provision of exogenous IL-2 obviated the need for conventional CD4(+) T cells in the induction of Treg proliferation, but this process still required a contact-dependent but MHC II-independent interaction between DCs and Tregs.
7347 20695767 In healthy C57BL/6J (B6) mice, total CD4(+) and CD8(+) T-cell subsets were diminished by FTY720, but recently activated and memory subsets were spared and constituted significantly higher percentage of remaining T cells in blood.
7348 20703438 Studies employing T cell receptor transgenic T cells have convincingly shown that selective delivery of non-self model antigens to DEC-205(+) dendritic cells (DCs) in the steady-state can induce Foxp3-expressing CD4(+)CD25(+) regulatory T (Treg) cells from conventional CD4(+)CD25(-)Foxp3(-) T cells.
7349 20703438 Here, we show in proof-of-principle experiments that targeting a mimotope peptide to the endocytic receptor DEC-205 on DCs in NOD mice induces efficient conversion of pancreatic beta-cell-reactive BDC2.5 CD4(+) T cells into long-lived Foxp3(+) Treg cells.
7350 20703438 While de novo generation of BDC2.5 Treg cells did not interfere with disease progression, anti-DEC-205-mediated targeting of whole proinsulin in prediabetic NOD mice substantially reduced the incidence of diabetes.
7351 20703438 Studies employing T cell receptor transgenic T cells have convincingly shown that selective delivery of non-self model antigens to DEC-205(+) dendritic cells (DCs) in the steady-state can induce Foxp3-expressing CD4(+)CD25(+) regulatory T (Treg) cells from conventional CD4(+)CD25(-)Foxp3(-) T cells.
7352 20703438 Here, we show in proof-of-principle experiments that targeting a mimotope peptide to the endocytic receptor DEC-205 on DCs in NOD mice induces efficient conversion of pancreatic beta-cell-reactive BDC2.5 CD4(+) T cells into long-lived Foxp3(+) Treg cells.
7353 20703438 While de novo generation of BDC2.5 Treg cells did not interfere with disease progression, anti-DEC-205-mediated targeting of whole proinsulin in prediabetic NOD mice substantially reduced the incidence of diabetes.
7354 20705519 Increased spontaneous production of VEGF by CD4+ T cells in type 1 diabetes.
7355 20705519 Hence, these data indicate that there is a sustained spontaneous production of VEGF by CD4(+) T cells in type 1 diabetes, which is additionally exacerbated in DR.
7356 20705519 Increased spontaneous production of VEGF by CD4+ T cells in type 1 diabetes.
7357 20705519 Hence, these data indicate that there is a sustained spontaneous production of VEGF by CD4(+) T cells in type 1 diabetes, which is additionally exacerbated in DR.
7358 20720201 MEKK3 overexpression contributes to the hyperresponsiveness of IL-12-overproducing cells and CD4+ T conventional cells in nonobese diabetic mice.
7359 20720201 Aberrant p38 activation induced by various inflammatory stimuli in IL-12-overproducing cells is not due to defective MAPK phosphatase-1 induction in NOD mice.
7360 20720201 Deviated IKK and MAPKs activation also occurs in NOD CD4(+) Tconv cells, which is associated with higher rates of proliferation.
7361 20720201 All of the above evidence suggests that the signaling defects occur at the level of MAPK kinase kinase (MAK3K or MEKK).
7362 20720201 Further exploration shows that MEKK3, but not other MAP3Ks, is overexpressed in NOD IL-12-overproducing cells and CD4(+) Tconv cells independent of autoimmune inflammation.
7363 20720201 MEKK3 knockdown leads to reversal of the deviated IKK and MAPKs activation, resulting in reduced IL-12 production and decreased CD4(+) Tconv cell proliferation.
7364 20720201 MEKK3 overexpression contributes to the hyperresponsiveness of IL-12-overproducing cells and CD4+ T conventional cells in nonobese diabetic mice.
7365 20720201 Aberrant p38 activation induced by various inflammatory stimuli in IL-12-overproducing cells is not due to defective MAPK phosphatase-1 induction in NOD mice.
7366 20720201 Deviated IKK and MAPKs activation also occurs in NOD CD4(+) Tconv cells, which is associated with higher rates of proliferation.
7367 20720201 All of the above evidence suggests that the signaling defects occur at the level of MAPK kinase kinase (MAK3K or MEKK).
7368 20720201 Further exploration shows that MEKK3, but not other MAP3Ks, is overexpressed in NOD IL-12-overproducing cells and CD4(+) Tconv cells independent of autoimmune inflammation.
7369 20720201 MEKK3 knockdown leads to reversal of the deviated IKK and MAPKs activation, resulting in reduced IL-12 production and decreased CD4(+) Tconv cell proliferation.
7370 20720201 MEKK3 overexpression contributes to the hyperresponsiveness of IL-12-overproducing cells and CD4+ T conventional cells in nonobese diabetic mice.
7371 20720201 Aberrant p38 activation induced by various inflammatory stimuli in IL-12-overproducing cells is not due to defective MAPK phosphatase-1 induction in NOD mice.
7372 20720201 Deviated IKK and MAPKs activation also occurs in NOD CD4(+) Tconv cells, which is associated with higher rates of proliferation.
7373 20720201 All of the above evidence suggests that the signaling defects occur at the level of MAPK kinase kinase (MAK3K or MEKK).
7374 20720201 Further exploration shows that MEKK3, but not other MAP3Ks, is overexpressed in NOD IL-12-overproducing cells and CD4(+) Tconv cells independent of autoimmune inflammation.
7375 20720201 MEKK3 knockdown leads to reversal of the deviated IKK and MAPKs activation, resulting in reduced IL-12 production and decreased CD4(+) Tconv cell proliferation.
7376 20720201 MEKK3 overexpression contributes to the hyperresponsiveness of IL-12-overproducing cells and CD4+ T conventional cells in nonobese diabetic mice.
7377 20720201 Aberrant p38 activation induced by various inflammatory stimuli in IL-12-overproducing cells is not due to defective MAPK phosphatase-1 induction in NOD mice.
7378 20720201 Deviated IKK and MAPKs activation also occurs in NOD CD4(+) Tconv cells, which is associated with higher rates of proliferation.
7379 20720201 All of the above evidence suggests that the signaling defects occur at the level of MAPK kinase kinase (MAK3K or MEKK).
7380 20720201 Further exploration shows that MEKK3, but not other MAP3Ks, is overexpressed in NOD IL-12-overproducing cells and CD4(+) Tconv cells independent of autoimmune inflammation.
7381 20720201 MEKK3 knockdown leads to reversal of the deviated IKK and MAPKs activation, resulting in reduced IL-12 production and decreased CD4(+) Tconv cell proliferation.
7382 20810982 CD4(+)FOXP3(+) regulatory T cells are essential for immune tolerance, and murine studies suggest that their dysfunction can lead to type 1 diabetes (T1D).
7383 20810982 Recently, distinct subsets of CD4(+)FOXP3(+) T cells with differing function were identified.
7384 20810982 Therefore, we evaluated whether the relative fractions of CD4(+)FOXP3(+) subsets are altered in new-onset T1D subjects.
7385 20810982 Moreover, these T1D subjects had a higher proportion of both CD4(+) and CD8(+) T cells that secrete IL-17.
7386 20810982 CD4(+)FOXP3(+) regulatory T cells are essential for immune tolerance, and murine studies suggest that their dysfunction can lead to type 1 diabetes (T1D).
7387 20810982 Recently, distinct subsets of CD4(+)FOXP3(+) T cells with differing function were identified.
7388 20810982 Therefore, we evaluated whether the relative fractions of CD4(+)FOXP3(+) subsets are altered in new-onset T1D subjects.
7389 20810982 Moreover, these T1D subjects had a higher proportion of both CD4(+) and CD8(+) T cells that secrete IL-17.
7390 20810982 CD4(+)FOXP3(+) regulatory T cells are essential for immune tolerance, and murine studies suggest that their dysfunction can lead to type 1 diabetes (T1D).
7391 20810982 Recently, distinct subsets of CD4(+)FOXP3(+) T cells with differing function were identified.
7392 20810982 Therefore, we evaluated whether the relative fractions of CD4(+)FOXP3(+) subsets are altered in new-onset T1D subjects.
7393 20810982 Moreover, these T1D subjects had a higher proportion of both CD4(+) and CD8(+) T cells that secrete IL-17.
7394 20810982 CD4(+)FOXP3(+) regulatory T cells are essential for immune tolerance, and murine studies suggest that their dysfunction can lead to type 1 diabetes (T1D).
7395 20810982 Recently, distinct subsets of CD4(+)FOXP3(+) T cells with differing function were identified.
7396 20810982 Therefore, we evaluated whether the relative fractions of CD4(+)FOXP3(+) subsets are altered in new-onset T1D subjects.
7397 20810982 Moreover, these T1D subjects had a higher proportion of both CD4(+) and CD8(+) T cells that secrete IL-17.
7398 20818148 CD4(+)CD25(+) T cells which have also been described as regulatory T cells (Treg), have immune inhibitory functions in the immune system.
7399 20818148 The clinical features of IPEX syndrome include chronic dermatitis, enteropathy characterized by severe and refractory diarrhea, and autoimmune endocrinopathy, such as early-onset insulin-dependent diabetes mellitus, thyroiditis, or both.
7400 20827324 As an innovative strategy to circumvent these barriers, vaccine trials to stimulate antigen-specific T-cells polarized toward helper T-cells with a regulatory phenotype (Tregs, CD4+, CD25+, FoxP3+) have also been introduced.
7401 20850948 Immunotargeting of insulin reactive CD8 T cells to prevent diabetes.
7402 20850948 Insulin is one of the earliest targeted autoantigens in the immune destruction of insulin-producing beta cells by autoreactive CD4 and CD8 T cells in type 1 diabetes.
7403 20850948 In this study, we used Non-obese diabetic (NOD) transgenic T cells engineered to express MHC class I-insulin peptide complexes linked to a T cell activation component (InsCD3-ζ), to target insulin-reactive CD8 T cells.
7404 20850948 We showed that activated, but not naïve, InsCD3-ζ CD8 T cells killed diabetogenic insulin-reactive CD8 target cells in vitro, inducing antigen-specific cell death mediated via both the release of perforin and the Fas-Fas ligand pathway.
7405 20850948 Finally, in vivo, we showed that diabetes induced by adoptive transfer of insulin-reactive T cells was reduced following injection of activated InsCD3-ζ CD8 T cells.
7406 20850948 Thus, using this novel system we have demonstrated that InsCD3-ζ CD8 T cells can directly kill insulin-reactive CD8 T cells in vitro and by targeting insulin-specific CD8 T cells early in the course of disease alter the progression of spontaneous diabetes in vivo in NOD mice.
7407 20855871 In addition, transfer of CD8(+) T cells from diabetic animals into DORmO.RAG2(-/-) mice promoted insulitis by OVA-specific CD4(+) T cells.
7408 20869956 Compared with the untreated diabetic group, UA and metformin significantly improved blood glucose, glycosylated hemoglobin, glucose tolerance, insulin tolerance and plasma leptin levels as well as aminotransferase activity.
7409 20869956 Mice receiving UA or metformin supplementation had increased CD4(+)CD8(+) subpopulations in the thymus compared to the untreated diabetic mice.
7410 20869956 Concanavalin A-stimulated splenic T-lymphocyte proliferation and single-positive (CD4(+) and CD8(+)) subpopulations were significantly higher in the UA-supplemented diabetic groups than in the untreated diabetic group, but lipopolysaccharide-stimulated B-lymphocyte proliferation and the CD19(+) subpopulation were not significantly different among the groups.
7411 20869956 In the STZ/NA-induced diabetic mice, metformin increased the splenic T-lymphocyte CD4(+) and CD8(+) cell numbers without any change in T-lymphocyte proliferation.
7412 20869956 Compared with the untreated diabetic group, UA and metformin significantly improved blood glucose, glycosylated hemoglobin, glucose tolerance, insulin tolerance and plasma leptin levels as well as aminotransferase activity.
7413 20869956 Mice receiving UA or metformin supplementation had increased CD4(+)CD8(+) subpopulations in the thymus compared to the untreated diabetic mice.
7414 20869956 Concanavalin A-stimulated splenic T-lymphocyte proliferation and single-positive (CD4(+) and CD8(+)) subpopulations were significantly higher in the UA-supplemented diabetic groups than in the untreated diabetic group, but lipopolysaccharide-stimulated B-lymphocyte proliferation and the CD19(+) subpopulation were not significantly different among the groups.
7415 20869956 In the STZ/NA-induced diabetic mice, metformin increased the splenic T-lymphocyte CD4(+) and CD8(+) cell numbers without any change in T-lymphocyte proliferation.
7416 20869956 Compared with the untreated diabetic group, UA and metformin significantly improved blood glucose, glycosylated hemoglobin, glucose tolerance, insulin tolerance and plasma leptin levels as well as aminotransferase activity.
7417 20869956 Mice receiving UA or metformin supplementation had increased CD4(+)CD8(+) subpopulations in the thymus compared to the untreated diabetic mice.
7418 20869956 Concanavalin A-stimulated splenic T-lymphocyte proliferation and single-positive (CD4(+) and CD8(+)) subpopulations were significantly higher in the UA-supplemented diabetic groups than in the untreated diabetic group, but lipopolysaccharide-stimulated B-lymphocyte proliferation and the CD19(+) subpopulation were not significantly different among the groups.
7419 20869956 In the STZ/NA-induced diabetic mice, metformin increased the splenic T-lymphocyte CD4(+) and CD8(+) cell numbers without any change in T-lymphocyte proliferation.
7420 20880188 Our previous studies of the murine genetic locus Idd6 revealed the aryl hydrocarbon receptor nuclear translocator-like protein 2 (Arntl2) as a candidate gene for type 1 diabetes; and in Idd6 NOD.C3H congenic mice, Arntl2 upregulation is linked to decreased diabetes development. 2.
7421 20880188 Diabetes incidence was increased by Arntl2 mRNA interference in the congenic strain and this was associated with an increase in CD4(+) T cells and a decrease in regulatory T cells in the peripheral immune system. 4.
7422 20884174 Hence we addressed this issue by using such dual transplantation and demonstrate herein that seven weeks later, recipient db/db mice manifested improved body weight, reduced levels of blood glucose, and a reduction of plasma IL-6 and IL-1β.
7423 20884174 More importantly, this treatment regimen showed normal CD4/CD8 ratios, and increased plasma adiponectin levels, insulin sensitivity, and the number of insulin-producing cells.
7424 20941602 Naturally occurring regulatory T cells (nTregs; CD4(+)CD25(+)Foxp3(+)) are capable of suppressing the chronic inflammation observed in a variety of different animal models of autoimmune and chronic inflammatory diseases such as inflammatory bowel diseases, diabetes, and arthritis.
7425 20941602 Although several laboratories have described different methods to expand flow-purified nTregs or convert conventional/naïve T cells (CD4(+)Foxp3(-)) to Foxp3-expressing "induced" Tregs (iTregs; CD4(+)Foxp3(+)) ex vivo, we have found that many of these approaches are encumbered with their own limitations.
7426 20941602 We present a detailed protocol demonstrating that polyclonal activation of conventional CD4(+) T cells in the presence of IL-2, TGFβ, and all trans retinoic acid induces >90% conversion of these T cells to Foxp3-expressing iTregs as well as promotes a three- to fourfold increase in proliferation following a 4-day incubation period in vitro.
7427 20941602 Naturally occurring regulatory T cells (nTregs; CD4(+)CD25(+)Foxp3(+)) are capable of suppressing the chronic inflammation observed in a variety of different animal models of autoimmune and chronic inflammatory diseases such as inflammatory bowel diseases, diabetes, and arthritis.
7428 20941602 Although several laboratories have described different methods to expand flow-purified nTregs or convert conventional/naïve T cells (CD4(+)Foxp3(-)) to Foxp3-expressing "induced" Tregs (iTregs; CD4(+)Foxp3(+)) ex vivo, we have found that many of these approaches are encumbered with their own limitations.
7429 20941602 We present a detailed protocol demonstrating that polyclonal activation of conventional CD4(+) T cells in the presence of IL-2, TGFβ, and all trans retinoic acid induces >90% conversion of these T cells to Foxp3-expressing iTregs as well as promotes a three- to fourfold increase in proliferation following a 4-day incubation period in vitro.
7430 20941602 Naturally occurring regulatory T cells (nTregs; CD4(+)CD25(+)Foxp3(+)) are capable of suppressing the chronic inflammation observed in a variety of different animal models of autoimmune and chronic inflammatory diseases such as inflammatory bowel diseases, diabetes, and arthritis.
7431 20941602 Although several laboratories have described different methods to expand flow-purified nTregs or convert conventional/naïve T cells (CD4(+)Foxp3(-)) to Foxp3-expressing "induced" Tregs (iTregs; CD4(+)Foxp3(+)) ex vivo, we have found that many of these approaches are encumbered with their own limitations.
7432 20941602 We present a detailed protocol demonstrating that polyclonal activation of conventional CD4(+) T cells in the presence of IL-2, TGFβ, and all trans retinoic acid induces >90% conversion of these T cells to Foxp3-expressing iTregs as well as promotes a three- to fourfold increase in proliferation following a 4-day incubation period in vitro.
7433 20956337 The protective effects of MDSCs might be mediated by inducing anergy in autoreactive T cells and the development of CD4(+)CD25(+)Foxp3(+) Tregs.
7434 21038470 Acquisition of regulatory function by human CD8(+) T cells treated with anti-CD3 antibody requires TNF.
7435 21038470 They inhibit CD4(+) T-cell proliferation by mechanisms involving TNF and CCL4, and by blocking target cell entry into G2/M phase of cell cycle but neither kill them, nor compete for IL-2.
7436 21038470 The induction of CD8(+) Treg by anti-CD3 mAb requires TNF and signaling through the NF-κB cascade.
7437 21038470 The CD8(+) Treg express CD25, glucocorticoid-induced TNF receptor family, CTLA-4, Foxp3, and TNFR2, and the combined expression of TNFR2 and CD25 identifies a potent subpopulation of CD8(+) Treg.
7438 21050716 To this end, we determined the feasibility of cloning and expanding human CD4(+) Treg specific for the type 1 diabetes autoantigens, GAD65 and proinsulin.
7439 21050716 Blood CD4(+) cells stimulated to divide in response to GAD65 (in three healthy individuals) or proinsulin (in one type 1 diabetic) were flow sorted into single cells and cultured on feeder cells in the presence of anti-CD3 monoclonal antibody, IL-2 and IL-4.
7440 21050716 Treg clones were not distinguished by markers of conventional CD4(+)CD25(+) Treg and suppressed independently of cell-cell contact but not via known soluble suppressor factors.
7441 21050716 To this end, we determined the feasibility of cloning and expanding human CD4(+) Treg specific for the type 1 diabetes autoantigens, GAD65 and proinsulin.
7442 21050716 Blood CD4(+) cells stimulated to divide in response to GAD65 (in three healthy individuals) or proinsulin (in one type 1 diabetic) were flow sorted into single cells and cultured on feeder cells in the presence of anti-CD3 monoclonal antibody, IL-2 and IL-4.
7443 21050716 Treg clones were not distinguished by markers of conventional CD4(+)CD25(+) Treg and suppressed independently of cell-cell contact but not via known soluble suppressor factors.
7444 21050716 To this end, we determined the feasibility of cloning and expanding human CD4(+) Treg specific for the type 1 diabetes autoantigens, GAD65 and proinsulin.
7445 21050716 Blood CD4(+) cells stimulated to divide in response to GAD65 (in three healthy individuals) or proinsulin (in one type 1 diabetic) were flow sorted into single cells and cultured on feeder cells in the presence of anti-CD3 monoclonal antibody, IL-2 and IL-4.
7446 21050716 Treg clones were not distinguished by markers of conventional CD4(+)CD25(+) Treg and suppressed independently of cell-cell contact but not via known soluble suppressor factors.
7447 21099102 Among these, protection mediated by CD4+Foxp3+ Tregs constitutes an essential pathway.
7448 21099113 CD4+CD25+Foxp3+ Tregs play a major role in prevention of autoimmune diseases.
7449 21099113 In vivo experiments showed that this Treg boost was partially dependent on TNF but not on IL-2.
7450 21112637 Increased GABA(A) channel subunits expression in CD8(+) but not in CD4(+) T cells in BB rats developing diabetes compared to their congenic littermates.
7451 21112637 We examined CD4(+) and CD8(+) T cells from diabetes prone (DR(lyp/lyp)) or resistant (DR(+/+)) congenic biobreeding (BB) rats for expression of GABA(A) channels.
7452 21112637 Our results show that BB rat CD4(+) and CD8(+) T cells express α1, α2, α3, α4, α6, β3, γ1, δ, ρ1 and ρ2 GABA(A) channel subunits.
7453 21112637 In CD8(+) T cells from DR(lyp/lyp) animals the subunits were significantly upregulated relative to expression levels in the CD8(+) T cells from DR(+/+) rats as well as from CD4(+) T cells from both DR(lyp/lyp) and DR(+/+) rats.
7454 21112637 Increased GABA(A) channel subunits expression in CD8(+) but not in CD4(+) T cells in BB rats developing diabetes compared to their congenic littermates.
7455 21112637 We examined CD4(+) and CD8(+) T cells from diabetes prone (DR(lyp/lyp)) or resistant (DR(+/+)) congenic biobreeding (BB) rats for expression of GABA(A) channels.
7456 21112637 Our results show that BB rat CD4(+) and CD8(+) T cells express α1, α2, α3, α4, α6, β3, γ1, δ, ρ1 and ρ2 GABA(A) channel subunits.
7457 21112637 In CD8(+) T cells from DR(lyp/lyp) animals the subunits were significantly upregulated relative to expression levels in the CD8(+) T cells from DR(+/+) rats as well as from CD4(+) T cells from both DR(lyp/lyp) and DR(+/+) rats.
7458 21112637 Increased GABA(A) channel subunits expression in CD8(+) but not in CD4(+) T cells in BB rats developing diabetes compared to their congenic littermates.
7459 21112637 We examined CD4(+) and CD8(+) T cells from diabetes prone (DR(lyp/lyp)) or resistant (DR(+/+)) congenic biobreeding (BB) rats for expression of GABA(A) channels.
7460 21112637 Our results show that BB rat CD4(+) and CD8(+) T cells express α1, α2, α3, α4, α6, β3, γ1, δ, ρ1 and ρ2 GABA(A) channel subunits.
7461 21112637 In CD8(+) T cells from DR(lyp/lyp) animals the subunits were significantly upregulated relative to expression levels in the CD8(+) T cells from DR(+/+) rats as well as from CD4(+) T cells from both DR(lyp/lyp) and DR(+/+) rats.
7462 21112637 Increased GABA(A) channel subunits expression in CD8(+) but not in CD4(+) T cells in BB rats developing diabetes compared to their congenic littermates.
7463 21112637 We examined CD4(+) and CD8(+) T cells from diabetes prone (DR(lyp/lyp)) or resistant (DR(+/+)) congenic biobreeding (BB) rats for expression of GABA(A) channels.
7464 21112637 Our results show that BB rat CD4(+) and CD8(+) T cells express α1, α2, α3, α4, α6, β3, γ1, δ, ρ1 and ρ2 GABA(A) channel subunits.
7465 21112637 In CD8(+) T cells from DR(lyp/lyp) animals the subunits were significantly upregulated relative to expression levels in the CD8(+) T cells from DR(+/+) rats as well as from CD4(+) T cells from both DR(lyp/lyp) and DR(+/+) rats.
7466 21116786 Programmed death-1 (PD-1) is a co-inhibitory receptor of the CD28/CTLA-4 family which is expressed on activated T cells and inhibits T cell activation after binding to PD-1 ligands.
7467 21116786 Although the expression of CTLA-4, PD-1 and FoxP3, which are inhibitory molecules of activated T cells, is reduced only on STZ injected wild type (WT) mice, CD4, CD8 and regulatory T cell populations were not changed in all experimental groups.
7468 21116786 When splenocytes were re-stimulated in ex vivo, the production of IL-2 and IFN-γ and the T cell proliferation were increased in all STZ injected mice, but the increment rate was less in PD-1 Tg groups.
7469 21116786 Although more experimental evidence needs to be provided, these results suggest that ligation of PD-1 and PD-L1/2 may have an effect on macrophages as well as does T cells.
7470 21123117 Serum levels of proinflammatory cytokines TNF-α, IFN-γ and IL17 were lower in IVIG treated animals when compared with controls, while IL10 level was higher.
7471 21123117 The number of CD4(+)Foxp3(+) cells was higher in pancreatic lymph nodes of heme-exposed IVIG treated mice.
7472 21169553 We previously described the NOD.c3c4 mouse, which is protected from type 1 diabetes (T1D) because of protective alleles at multiple insulin-dependent diabetes (Idd) genes, but develops autoimmune biliary disease (ABD) resembling primary biliary cirrhosis (PBC).
7473 21169553 The frequency of effector memory (CD44(+)CD62L(-)) and central memory (CD44(+)CD62L(+)) CD8 T cells is significantly increased in the intrahepatic lymphocyte fraction of NOD.ABD mice, and NOD.ABD CD8 T cells produce more IFN-γ and TNF-α, compared with controls.
7474 21169553 Unlike T1D where both CD4 and CD8 T cells are required for disease transfer, purified NOD.ABD CD8 T cells can transfer liver inflammation into NOD.c3c4 scid recipients, and disease transfer is ameliorated by cotransferring T regulatory cells.
7475 21185938 To explore a novel gene therapy strategy combining immunotherapy and β cell regeneration, we constructed a non-viral plasmid encoding proinsulin (PI) and pancreatic regenerating (Reg) III protein (pReg/PI).
7476 21185938 Treatment with pReg/PI also restored the balance of Th1/Th2 cytokines and expanded CD4(+)CD25(+)Foxp3(+) T regulatory cells, which may attribute to the establishment of self-immune tolerance.
7477 21217831 The first two axes in this study are related to the third and fourth axes of variation in the first study and also reflect variation in the abundance of CD4 and CD8 transcripts.
7478 21235534 The CD4:CD8 ratio was reduced drastically upon LCMV infection due to an expansion of CD8 effectors but ameliorated in ATG-treated mice.
7479 21235534 Although the percentage of CD4(+) CD25(+) regulatory T cells (T(regs) ) within the CD4(+) population was increased significantly after ATG therapy, their frequency in the periphery was reduced dramatically and never returned to normal baseline.
7480 21235534 The inability of ATG treatment to cure T1D in a stringent viral model (RIP-LCMV mice) is due at least partially to the inability to maintain or increase a sufficient CD4(+) CD25(+) T(regs) frequency, in striking contrast with what was reported in the NOD model.
7481 21235534 The CD4:CD8 ratio was reduced drastically upon LCMV infection due to an expansion of CD8 effectors but ameliorated in ATG-treated mice.
7482 21235534 Although the percentage of CD4(+) CD25(+) regulatory T cells (T(regs) ) within the CD4(+) population was increased significantly after ATG therapy, their frequency in the periphery was reduced dramatically and never returned to normal baseline.
7483 21235534 The inability of ATG treatment to cure T1D in a stringent viral model (RIP-LCMV mice) is due at least partially to the inability to maintain or increase a sufficient CD4(+) CD25(+) T(regs) frequency, in striking contrast with what was reported in the NOD model.
7484 21235534 The CD4:CD8 ratio was reduced drastically upon LCMV infection due to an expansion of CD8 effectors but ameliorated in ATG-treated mice.
7485 21235534 Although the percentage of CD4(+) CD25(+) regulatory T cells (T(regs) ) within the CD4(+) population was increased significantly after ATG therapy, their frequency in the periphery was reduced dramatically and never returned to normal baseline.
7486 21235534 The inability of ATG treatment to cure T1D in a stringent viral model (RIP-LCMV mice) is due at least partially to the inability to maintain or increase a sufficient CD4(+) CD25(+) T(regs) frequency, in striking contrast with what was reported in the NOD model.
7487 21248249 The E3 ubiquitin ligase Cbl-b regulates T cell activation thresholds and has been associated with protecting against type 1 diabetes, but its in vivo role in the process of self-tolerance has not been examined at the level of potentially autoaggressive CD4(+) T cells.
7488 21248249 By tracing the fate of pancreatic islet-reactive CD4(+) T cells in prediabetic 3A9-TCR × insHEL double-transgenic mice, we find that Cbl-b deficiency contrasts with AIRE or IL-2 deficiency, because it does not affect thymic negative selection of islet-reactive CD4(+) cells or the numbers of islet-specific CD4(+) or CD4(+)Foxp3(+) T cells in the periphery, although it decreased differentiation of inducible regulatory T cells from TGF-β-treated 3A9-TCR cells in vitro.
7489 21248249 The E3 ubiquitin ligase Cbl-b regulates T cell activation thresholds and has been associated with protecting against type 1 diabetes, but its in vivo role in the process of self-tolerance has not been examined at the level of potentially autoaggressive CD4(+) T cells.
7490 21248249 By tracing the fate of pancreatic islet-reactive CD4(+) T cells in prediabetic 3A9-TCR × insHEL double-transgenic mice, we find that Cbl-b deficiency contrasts with AIRE or IL-2 deficiency, because it does not affect thymic negative selection of islet-reactive CD4(+) cells or the numbers of islet-specific CD4(+) or CD4(+)Foxp3(+) T cells in the periphery, although it decreased differentiation of inducible regulatory T cells from TGF-β-treated 3A9-TCR cells in vitro.
7491 21309048 Type 1 diabetes is the result of a breakdown in immune regulation that leads to expansion of autoreactive CD4+ and CD8+ T cells, autoantibody-producing B lymphocytes and activation of the innate immune system.
7492 21317396 IL-2 and TGF-β1 play key roles in the immunobiology of Foxp3-expressing CD25(+)CD4(+) T cells (Foxp3(+)Treg).
7493 21321581 Protection against diabetes was accompanied by histone hyperacetylation in pancreas and spleen, enhanced frequency of CD4(+) CD62L(+) cells in the spleen, reduction in cellular infiltration of islets, restoration of normoglycemia and glucose-induced insulin release by beta cells.
7494 21321581 Activation of splenic T lymphocytes derived from protected mice in vitro with pharmacological agents that bypass the antigen receptor or immobilized anti-CD3 antibody resulted in enhanced expression of Ifng mRNA and protein without altering the expression of Il4, Il17, Il18, Inos and Tnfa genes nor the secretion of IL-2, IL-4, IL-17 and TNF-α proteins.
7495 21321581 Consistently, expression of the transcription factor involved in Ifng transcription, Tbet/Tbx21 but not Gata3 and Rorgt, respectively, required for the transcription of Il4 and Il17, was upregulated in activated splenocytes of protected mice.
7496 21324454 CD4+CD28 null T lymphocytes are expanded in young women with polycystic ovary syndrome.
7497 21324454 We demonstrated that women with PCOS showed an expansion of CD4(+)CD28(null) T cells, an aggressive population of T lymphocytes that has been recently associated with recurrent coronary instability and type 2 diabetes mellitus.
7498 21324454 CD4+CD28 null T lymphocytes are expanded in young women with polycystic ovary syndrome.
7499 21324454 We demonstrated that women with PCOS showed an expansion of CD4(+)CD28(null) T cells, an aggressive population of T lymphocytes that has been recently associated with recurrent coronary instability and type 2 diabetes mellitus.
7500 21368230 To understand better the plasticity of human Tregs in the context of type 1 diabetes, we characterized an IFN-γ-competent subset of human CD4(+)CD127(lo/-)CD25(+) Tregs.
7501 21368230 Purified IFN-γ(+) Tregs were assessed for suppressive function, degree of TSDR demethylation, and expression of Treg lineage markers FOXP3 and Helios.
7502 21368230 Naive Tregs were capable of upregulating expression of Th1-associated T-bet, CXCR3, and IFN-γ in response to IL-12.
7503 21383770 Therefore, the requirement for NK cells in β-cell destruction in the CD4-dependent T-cell antigen receptor transgenic NOD4.1 mice was examined.
7504 21436590 Here, we show that the α-isoform of myosin heavy chain (α-MyHC, which is encoded by the gene Myh6) is the pathogenic autoantigen for CD4+ T cells in a spontaneous mouse model of myocarditis.
7505 21444661 These tolerogenic pDCs convert naive anti-islet T cells into Foxp3(+) CD4(+) regulatory T cells (T reg cells) in pancreatic LNs.
7506 21458378 The suppression was likely to be mediated by T cells, as we found that regulatory CD4(+)CD25(+)Foxp3(+) cells were significantly increased in G/10-DC treated animals.
7507 21458378 In vivo, the G/10-DCs inhibited diabetogenic T cell proliferation; in vitro, they had reduced expression of costimulatory molecules and produced little IL-12/23 p40 or IL-6 but a large amount of IL-10 when compared with DCs matured in the presence of IL-4 (G/4-DC).
7508 21464945 Prominent bone loss mediated by RANKL and IL-17 produced by CD4+ T cells in TallyHo/JngJ mice.
7509 21464945 The osteoblast-specific bone forming markers osteocalcin and osteoprotegerin were decreased in TH mice, whereas osteoclast-driven bone resorption markers such as IL-6 and RANKL were significantly elevated in the bone marrow and blood of TH mice.
7510 21464945 In addition, RANKL expression was prominently increased in CD4+ T cells of TH mice upon T cell receptor stimulation, which was in accordance with enhanced IL-17 production.
7511 21464945 IL-17 production in CD4+ T cells was directly promoted by treatment with leptin while IFN-γ production was not.
7512 21464945 These results strongly indicate that increased leptin in TH mice may act in conjunction with IL-6 to preferentially stimulate IL-17 production in CD4+ T cells and induce RANKL-mediated osteoclastogenesis.
7513 21464945 Prominent bone loss mediated by RANKL and IL-17 produced by CD4+ T cells in TallyHo/JngJ mice.
7514 21464945 The osteoblast-specific bone forming markers osteocalcin and osteoprotegerin were decreased in TH mice, whereas osteoclast-driven bone resorption markers such as IL-6 and RANKL were significantly elevated in the bone marrow and blood of TH mice.
7515 21464945 In addition, RANKL expression was prominently increased in CD4+ T cells of TH mice upon T cell receptor stimulation, which was in accordance with enhanced IL-17 production.
7516 21464945 IL-17 production in CD4+ T cells was directly promoted by treatment with leptin while IFN-γ production was not.
7517 21464945 These results strongly indicate that increased leptin in TH mice may act in conjunction with IL-6 to preferentially stimulate IL-17 production in CD4+ T cells and induce RANKL-mediated osteoclastogenesis.
7518 21464945 Prominent bone loss mediated by RANKL and IL-17 produced by CD4+ T cells in TallyHo/JngJ mice.
7519 21464945 The osteoblast-specific bone forming markers osteocalcin and osteoprotegerin were decreased in TH mice, whereas osteoclast-driven bone resorption markers such as IL-6 and RANKL were significantly elevated in the bone marrow and blood of TH mice.
7520 21464945 In addition, RANKL expression was prominently increased in CD4+ T cells of TH mice upon T cell receptor stimulation, which was in accordance with enhanced IL-17 production.
7521 21464945 IL-17 production in CD4+ T cells was directly promoted by treatment with leptin while IFN-γ production was not.
7522 21464945 These results strongly indicate that increased leptin in TH mice may act in conjunction with IL-6 to preferentially stimulate IL-17 production in CD4+ T cells and induce RANKL-mediated osteoclastogenesis.
7523 21464945 Prominent bone loss mediated by RANKL and IL-17 produced by CD4+ T cells in TallyHo/JngJ mice.
7524 21464945 The osteoblast-specific bone forming markers osteocalcin and osteoprotegerin were decreased in TH mice, whereas osteoclast-driven bone resorption markers such as IL-6 and RANKL were significantly elevated in the bone marrow and blood of TH mice.
7525 21464945 In addition, RANKL expression was prominently increased in CD4+ T cells of TH mice upon T cell receptor stimulation, which was in accordance with enhanced IL-17 production.
7526 21464945 IL-17 production in CD4+ T cells was directly promoted by treatment with leptin while IFN-γ production was not.
7527 21464945 These results strongly indicate that increased leptin in TH mice may act in conjunction with IL-6 to preferentially stimulate IL-17 production in CD4+ T cells and induce RANKL-mediated osteoclastogenesis.
7528 21469083 Signaling through TLR2 promotes inflammation and modulates CD4(+) CD25(+) Tregs.
7529 21469083 Treatment of prediabetic mice with a synthetic TLR2 agonist diminished T1D and increased the number and function of CD4(+) CD25(+) Tregs, also conferring DCs with tolerogenic properties.
7530 21469083 LCMV increased the frequency of CD4(+) CD25(+) Tregs and their production of TGF-β more significantly in WT than TLR2-deficient mice.
7531 21469083 Furthermore, LCMV infection in vivo or LCMV-infected DCs in vitro rendered, via TLR2, CD4(+) CD25(+) Tregs capable of diminishing T1D.
7532 21469083 Signaling through TLR2 promotes inflammation and modulates CD4(+) CD25(+) Tregs.
7533 21469083 Treatment of prediabetic mice with a synthetic TLR2 agonist diminished T1D and increased the number and function of CD4(+) CD25(+) Tregs, also conferring DCs with tolerogenic properties.
7534 21469083 LCMV increased the frequency of CD4(+) CD25(+) Tregs and their production of TGF-β more significantly in WT than TLR2-deficient mice.
7535 21469083 Furthermore, LCMV infection in vivo or LCMV-infected DCs in vitro rendered, via TLR2, CD4(+) CD25(+) Tregs capable of diminishing T1D.
7536 21469083 Signaling through TLR2 promotes inflammation and modulates CD4(+) CD25(+) Tregs.
7537 21469083 Treatment of prediabetic mice with a synthetic TLR2 agonist diminished T1D and increased the number and function of CD4(+) CD25(+) Tregs, also conferring DCs with tolerogenic properties.
7538 21469083 LCMV increased the frequency of CD4(+) CD25(+) Tregs and their production of TGF-β more significantly in WT than TLR2-deficient mice.
7539 21469083 Furthermore, LCMV infection in vivo or LCMV-infected DCs in vitro rendered, via TLR2, CD4(+) CD25(+) Tregs capable of diminishing T1D.
7540 21469083 Signaling through TLR2 promotes inflammation and modulates CD4(+) CD25(+) Tregs.
7541 21469083 Treatment of prediabetic mice with a synthetic TLR2 agonist diminished T1D and increased the number and function of CD4(+) CD25(+) Tregs, also conferring DCs with tolerogenic properties.
7542 21469083 LCMV increased the frequency of CD4(+) CD25(+) Tregs and their production of TGF-β more significantly in WT than TLR2-deficient mice.
7543 21469083 Furthermore, LCMV infection in vivo or LCMV-infected DCs in vitro rendered, via TLR2, CD4(+) CD25(+) Tregs capable of diminishing T1D.
7544 21469091 Reduced IL-2 expression in NOD mice leads to a temporal increase in CD62Llo FoxP3+ CD4+ T cells with limited suppressor activity.
7545 21469125 In vivo diabetogenic action of CD4+ T lymphocytes requires Fas expression and is independent of IL-1 and IL-18.
7546 21469125 Since pancreatic β cells upregulate Fas expression upon exposure to pro-inflammatory cytokines, we studied whether the diabetogenic action of CD4(+) T lymphocytes depends on Fas expression on target cells.
7547 21469125 We assayed the diabetogenic capacity of NOD spleen CD4(+) T lymphocytes when adoptively transferred into a NOD mouse model combining: (i) Fas-deficiency, (ii) FasL-deficiency, and (iii) SCID mutation.
7548 21469125 We found that CD4(+) T lymphocytes require Fas expression in the recipients' target cells to induce diabetes.
7549 21469125 IL-1β has been described as a key cytokine involved in Fas upregulation on mouse β cells.
7550 21469125 We addressed whether CD4(+) T cells require IL-1β to induce diabetes.
7551 21469125 We also studied spontaneous diabetes onset in NOD/IL-1 converting enzyme-deficient mice, in NOD/IL-1β-deficient mice, and CD4(+) T-cell adoptively transferred diabetes into NOD/SCID IL-1β-deficient mice.
7552 21469125 Neither IL-1β nor IL-18 are required for either spontaneous or CD4(+) T-cell adoptively transferred diabetes.
7553 21469125 We conclude that CD4(+) T-cell-mediated β-cell damage in autoimmune diabetes depends on Fas expression, but not on IL-1β unveiling the existing redundancy regarding the cytokines involved in Fas upregulation on NOD β cells in vivo.
7554 21469125 In vivo diabetogenic action of CD4+ T lymphocytes requires Fas expression and is independent of IL-1 and IL-18.
7555 21469125 Since pancreatic β cells upregulate Fas expression upon exposure to pro-inflammatory cytokines, we studied whether the diabetogenic action of CD4(+) T lymphocytes depends on Fas expression on target cells.
7556 21469125 We assayed the diabetogenic capacity of NOD spleen CD4(+) T lymphocytes when adoptively transferred into a NOD mouse model combining: (i) Fas-deficiency, (ii) FasL-deficiency, and (iii) SCID mutation.
7557 21469125 We found that CD4(+) T lymphocytes require Fas expression in the recipients' target cells to induce diabetes.
7558 21469125 IL-1β has been described as a key cytokine involved in Fas upregulation on mouse β cells.
7559 21469125 We addressed whether CD4(+) T cells require IL-1β to induce diabetes.
7560 21469125 We also studied spontaneous diabetes onset in NOD/IL-1 converting enzyme-deficient mice, in NOD/IL-1β-deficient mice, and CD4(+) T-cell adoptively transferred diabetes into NOD/SCID IL-1β-deficient mice.
7561 21469125 Neither IL-1β nor IL-18 are required for either spontaneous or CD4(+) T-cell adoptively transferred diabetes.
7562 21469125 We conclude that CD4(+) T-cell-mediated β-cell damage in autoimmune diabetes depends on Fas expression, but not on IL-1β unveiling the existing redundancy regarding the cytokines involved in Fas upregulation on NOD β cells in vivo.
7563 21469125 In vivo diabetogenic action of CD4+ T lymphocytes requires Fas expression and is independent of IL-1 and IL-18.
7564 21469125 Since pancreatic β cells upregulate Fas expression upon exposure to pro-inflammatory cytokines, we studied whether the diabetogenic action of CD4(+) T lymphocytes depends on Fas expression on target cells.
7565 21469125 We assayed the diabetogenic capacity of NOD spleen CD4(+) T lymphocytes when adoptively transferred into a NOD mouse model combining: (i) Fas-deficiency, (ii) FasL-deficiency, and (iii) SCID mutation.
7566 21469125 We found that CD4(+) T lymphocytes require Fas expression in the recipients' target cells to induce diabetes.
7567 21469125 IL-1β has been described as a key cytokine involved in Fas upregulation on mouse β cells.
7568 21469125 We addressed whether CD4(+) T cells require IL-1β to induce diabetes.
7569 21469125 We also studied spontaneous diabetes onset in NOD/IL-1 converting enzyme-deficient mice, in NOD/IL-1β-deficient mice, and CD4(+) T-cell adoptively transferred diabetes into NOD/SCID IL-1β-deficient mice.
7570 21469125 Neither IL-1β nor IL-18 are required for either spontaneous or CD4(+) T-cell adoptively transferred diabetes.
7571 21469125 We conclude that CD4(+) T-cell-mediated β-cell damage in autoimmune diabetes depends on Fas expression, but not on IL-1β unveiling the existing redundancy regarding the cytokines involved in Fas upregulation on NOD β cells in vivo.
7572 21469125 In vivo diabetogenic action of CD4+ T lymphocytes requires Fas expression and is independent of IL-1 and IL-18.
7573 21469125 Since pancreatic β cells upregulate Fas expression upon exposure to pro-inflammatory cytokines, we studied whether the diabetogenic action of CD4(+) T lymphocytes depends on Fas expression on target cells.
7574 21469125 We assayed the diabetogenic capacity of NOD spleen CD4(+) T lymphocytes when adoptively transferred into a NOD mouse model combining: (i) Fas-deficiency, (ii) FasL-deficiency, and (iii) SCID mutation.
7575 21469125 We found that CD4(+) T lymphocytes require Fas expression in the recipients' target cells to induce diabetes.
7576 21469125 IL-1β has been described as a key cytokine involved in Fas upregulation on mouse β cells.
7577 21469125 We addressed whether CD4(+) T cells require IL-1β to induce diabetes.
7578 21469125 We also studied spontaneous diabetes onset in NOD/IL-1 converting enzyme-deficient mice, in NOD/IL-1β-deficient mice, and CD4(+) T-cell adoptively transferred diabetes into NOD/SCID IL-1β-deficient mice.
7579 21469125 Neither IL-1β nor IL-18 are required for either spontaneous or CD4(+) T-cell adoptively transferred diabetes.
7580 21469125 We conclude that CD4(+) T-cell-mediated β-cell damage in autoimmune diabetes depends on Fas expression, but not on IL-1β unveiling the existing redundancy regarding the cytokines involved in Fas upregulation on NOD β cells in vivo.
7581 21469125 In vivo diabetogenic action of CD4+ T lymphocytes requires Fas expression and is independent of IL-1 and IL-18.
7582 21469125 Since pancreatic β cells upregulate Fas expression upon exposure to pro-inflammatory cytokines, we studied whether the diabetogenic action of CD4(+) T lymphocytes depends on Fas expression on target cells.
7583 21469125 We assayed the diabetogenic capacity of NOD spleen CD4(+) T lymphocytes when adoptively transferred into a NOD mouse model combining: (i) Fas-deficiency, (ii) FasL-deficiency, and (iii) SCID mutation.
7584 21469125 We found that CD4(+) T lymphocytes require Fas expression in the recipients' target cells to induce diabetes.
7585 21469125 IL-1β has been described as a key cytokine involved in Fas upregulation on mouse β cells.
7586 21469125 We addressed whether CD4(+) T cells require IL-1β to induce diabetes.
7587 21469125 We also studied spontaneous diabetes onset in NOD/IL-1 converting enzyme-deficient mice, in NOD/IL-1β-deficient mice, and CD4(+) T-cell adoptively transferred diabetes into NOD/SCID IL-1β-deficient mice.
7588 21469125 Neither IL-1β nor IL-18 are required for either spontaneous or CD4(+) T-cell adoptively transferred diabetes.
7589 21469125 We conclude that CD4(+) T-cell-mediated β-cell damage in autoimmune diabetes depends on Fas expression, but not on IL-1β unveiling the existing redundancy regarding the cytokines involved in Fas upregulation on NOD β cells in vivo.
7590 21469125 In vivo diabetogenic action of CD4+ T lymphocytes requires Fas expression and is independent of IL-1 and IL-18.
7591 21469125 Since pancreatic β cells upregulate Fas expression upon exposure to pro-inflammatory cytokines, we studied whether the diabetogenic action of CD4(+) T lymphocytes depends on Fas expression on target cells.
7592 21469125 We assayed the diabetogenic capacity of NOD spleen CD4(+) T lymphocytes when adoptively transferred into a NOD mouse model combining: (i) Fas-deficiency, (ii) FasL-deficiency, and (iii) SCID mutation.
7593 21469125 We found that CD4(+) T lymphocytes require Fas expression in the recipients' target cells to induce diabetes.
7594 21469125 IL-1β has been described as a key cytokine involved in Fas upregulation on mouse β cells.
7595 21469125 We addressed whether CD4(+) T cells require IL-1β to induce diabetes.
7596 21469125 We also studied spontaneous diabetes onset in NOD/IL-1 converting enzyme-deficient mice, in NOD/IL-1β-deficient mice, and CD4(+) T-cell adoptively transferred diabetes into NOD/SCID IL-1β-deficient mice.
7597 21469125 Neither IL-1β nor IL-18 are required for either spontaneous or CD4(+) T-cell adoptively transferred diabetes.
7598 21469125 We conclude that CD4(+) T-cell-mediated β-cell damage in autoimmune diabetes depends on Fas expression, but not on IL-1β unveiling the existing redundancy regarding the cytokines involved in Fas upregulation on NOD β cells in vivo.
7599 21469125 In vivo diabetogenic action of CD4+ T lymphocytes requires Fas expression and is independent of IL-1 and IL-18.
7600 21469125 Since pancreatic β cells upregulate Fas expression upon exposure to pro-inflammatory cytokines, we studied whether the diabetogenic action of CD4(+) T lymphocytes depends on Fas expression on target cells.
7601 21469125 We assayed the diabetogenic capacity of NOD spleen CD4(+) T lymphocytes when adoptively transferred into a NOD mouse model combining: (i) Fas-deficiency, (ii) FasL-deficiency, and (iii) SCID mutation.
7602 21469125 We found that CD4(+) T lymphocytes require Fas expression in the recipients' target cells to induce diabetes.
7603 21469125 IL-1β has been described as a key cytokine involved in Fas upregulation on mouse β cells.
7604 21469125 We addressed whether CD4(+) T cells require IL-1β to induce diabetes.
7605 21469125 We also studied spontaneous diabetes onset in NOD/IL-1 converting enzyme-deficient mice, in NOD/IL-1β-deficient mice, and CD4(+) T-cell adoptively transferred diabetes into NOD/SCID IL-1β-deficient mice.
7606 21469125 Neither IL-1β nor IL-18 are required for either spontaneous or CD4(+) T-cell adoptively transferred diabetes.
7607 21469125 We conclude that CD4(+) T-cell-mediated β-cell damage in autoimmune diabetes depends on Fas expression, but not on IL-1β unveiling the existing redundancy regarding the cytokines involved in Fas upregulation on NOD β cells in vivo.
7608 21469125 In vivo diabetogenic action of CD4+ T lymphocytes requires Fas expression and is independent of IL-1 and IL-18.
7609 21469125 Since pancreatic β cells upregulate Fas expression upon exposure to pro-inflammatory cytokines, we studied whether the diabetogenic action of CD4(+) T lymphocytes depends on Fas expression on target cells.
7610 21469125 We assayed the diabetogenic capacity of NOD spleen CD4(+) T lymphocytes when adoptively transferred into a NOD mouse model combining: (i) Fas-deficiency, (ii) FasL-deficiency, and (iii) SCID mutation.
7611 21469125 We found that CD4(+) T lymphocytes require Fas expression in the recipients' target cells to induce diabetes.
7612 21469125 IL-1β has been described as a key cytokine involved in Fas upregulation on mouse β cells.
7613 21469125 We addressed whether CD4(+) T cells require IL-1β to induce diabetes.
7614 21469125 We also studied spontaneous diabetes onset in NOD/IL-1 converting enzyme-deficient mice, in NOD/IL-1β-deficient mice, and CD4(+) T-cell adoptively transferred diabetes into NOD/SCID IL-1β-deficient mice.
7615 21469125 Neither IL-1β nor IL-18 are required for either spontaneous or CD4(+) T-cell adoptively transferred diabetes.
7616 21469125 We conclude that CD4(+) T-cell-mediated β-cell damage in autoimmune diabetes depends on Fas expression, but not on IL-1β unveiling the existing redundancy regarding the cytokines involved in Fas upregulation on NOD β cells in vivo.
7617 21469129 Antigen-presenting cell-associated four-domain MHC class II (MHC-II) molecules play a central role in activating autoreactive CD4(+) T cells involved in multiple sclerosis (MS) and type 1 diabetes (T1D).
7618 21478402 The inhibitory effect of AGEs on infection was associated with a RAGE-independent downregulation of CD4 at the cell membrane and by a RAGE-dependent repression of the CXCR4 and CCR5 HIV-1 receptors.
7619 21478402 AGEs induce the secretion of proinflammatory cytokines IL-6, TNF-α, and IL-12, but not RANTES or MIP-1α, and did not lead to MDDC maturation as demonstrated by the lack of expression of the CD83 molecule.
7620 21505262 Hence, in the NOD mouse, Tssp is a critical regulator of diabetes development through the selection of the autoreactive CD4 T cell repertoire.
7621 21543717 Foxp3(+) regulatory T cells (Tregs) originate in the thymus, but the Treg phenotype can also be induced in peripheral lymphoid organs or in vitro by stimulation of conventional CD4(+) T cells with IL-2 and TGF-β.
7622 21543717 Most Treg-typical transcripts were shared by NOD or B6g7 TGF-Tregs, except for a small group of differentially expressed genes, including genes relevant for suppressive activity (Lrrc32, Ctla4, and Cd73).
7623 21573001 The discrepancy between these two groups is thought to be associated with T-cell avidity, including CD8 and/or CD4 T cells.
7624 21573001 For this purpose, we build a series of mathematical models incorporating first one clone then multiple clones of islet-specific and pathogenic CD8 and/or CD4 T cells, together with B lymphocytes, to investigate the interaction of T-cell avidity with autoantibodies in predicting disease onset.
7625 21573001 The discrepancy between these two groups is thought to be associated with T-cell avidity, including CD8 and/or CD4 T cells.
7626 21573001 For this purpose, we build a series of mathematical models incorporating first one clone then multiple clones of islet-specific and pathogenic CD8 and/or CD4 T cells, together with B lymphocytes, to investigate the interaction of T-cell avidity with autoantibodies in predicting disease onset.
7627 21613616 We have previously proposed that sequence variation of the CD101 gene between NOD and C57BL/6 mice accounts for the protection from type 1 diabetes (T1D) provided by the insulin-dependent diabetes susceptibility region 10 (Idd10), a <1 Mb region on mouse chromosome 3.
7628 21613616 Susceptibility to T1D was correlated with genotype-dependent CD101 expression on multiple cell subsets, including Foxp3(+) regulatory CD4(+) T cells, CD11c(+) dendritic cells, and Gr1(+) myeloid cells.
7629 21620894 Low CTLA-4 expression in CD4+ helper T-cells in patients with fulminant type 1 diabetes.
7630 21620894 We analyzed the expression of cytotoxic T lymphocyte antigen 4 (CTLA-4) in CD4(+) helper T-cells in 16 patients with fulminant type 1 diabetes, 14 patients with type 1A diabetes, 10 patients with type 2 diabetes and 20 normal control subjects.
7631 21620894 There was a significant reduction in CTLA-4 expression in CD4(+) helper T-cells from patients with fulminant type 1 diabetes (P<0.05) compared with the other three groups.
7632 21620894 Low CTLA-4 expression was also observed in both CD4(+)CD25(high) T-cells and CD4(+)CD25(-) T-cells.
7633 21620894 There was a significant negative correlation between the proliferation of CD4(+)CD25(-) T-cells and the levels of CTLA-4.
7634 21620894 Intracellular expression of CTLA-4 in CD4(+) helper T-cells was not correlated with two CTLA-4 polymorphisms.
7635 21620894 In conclusion, the expression of CTLA-4 in CD4(+) helper T-cells was low in patients with fulminant type 1 diabetes.
7636 21620894 Low CTLA-4 expression in CD4+ helper T-cells in patients with fulminant type 1 diabetes.
7637 21620894 We analyzed the expression of cytotoxic T lymphocyte antigen 4 (CTLA-4) in CD4(+) helper T-cells in 16 patients with fulminant type 1 diabetes, 14 patients with type 1A diabetes, 10 patients with type 2 diabetes and 20 normal control subjects.
7638 21620894 There was a significant reduction in CTLA-4 expression in CD4(+) helper T-cells from patients with fulminant type 1 diabetes (P<0.05) compared with the other three groups.
7639 21620894 Low CTLA-4 expression was also observed in both CD4(+)CD25(high) T-cells and CD4(+)CD25(-) T-cells.
7640 21620894 There was a significant negative correlation between the proliferation of CD4(+)CD25(-) T-cells and the levels of CTLA-4.
7641 21620894 Intracellular expression of CTLA-4 in CD4(+) helper T-cells was not correlated with two CTLA-4 polymorphisms.
7642 21620894 In conclusion, the expression of CTLA-4 in CD4(+) helper T-cells was low in patients with fulminant type 1 diabetes.
7643 21620894 Low CTLA-4 expression in CD4+ helper T-cells in patients with fulminant type 1 diabetes.
7644 21620894 We analyzed the expression of cytotoxic T lymphocyte antigen 4 (CTLA-4) in CD4(+) helper T-cells in 16 patients with fulminant type 1 diabetes, 14 patients with type 1A diabetes, 10 patients with type 2 diabetes and 20 normal control subjects.
7645 21620894 There was a significant reduction in CTLA-4 expression in CD4(+) helper T-cells from patients with fulminant type 1 diabetes (P<0.05) compared with the other three groups.
7646 21620894 Low CTLA-4 expression was also observed in both CD4(+)CD25(high) T-cells and CD4(+)CD25(-) T-cells.
7647 21620894 There was a significant negative correlation between the proliferation of CD4(+)CD25(-) T-cells and the levels of CTLA-4.
7648 21620894 Intracellular expression of CTLA-4 in CD4(+) helper T-cells was not correlated with two CTLA-4 polymorphisms.
7649 21620894 In conclusion, the expression of CTLA-4 in CD4(+) helper T-cells was low in patients with fulminant type 1 diabetes.
7650 21620894 Low CTLA-4 expression in CD4+ helper T-cells in patients with fulminant type 1 diabetes.
7651 21620894 We analyzed the expression of cytotoxic T lymphocyte antigen 4 (CTLA-4) in CD4(+) helper T-cells in 16 patients with fulminant type 1 diabetes, 14 patients with type 1A diabetes, 10 patients with type 2 diabetes and 20 normal control subjects.
7652 21620894 There was a significant reduction in CTLA-4 expression in CD4(+) helper T-cells from patients with fulminant type 1 diabetes (P<0.05) compared with the other three groups.
7653 21620894 Low CTLA-4 expression was also observed in both CD4(+)CD25(high) T-cells and CD4(+)CD25(-) T-cells.
7654 21620894 There was a significant negative correlation between the proliferation of CD4(+)CD25(-) T-cells and the levels of CTLA-4.
7655 21620894 Intracellular expression of CTLA-4 in CD4(+) helper T-cells was not correlated with two CTLA-4 polymorphisms.
7656 21620894 In conclusion, the expression of CTLA-4 in CD4(+) helper T-cells was low in patients with fulminant type 1 diabetes.
7657 21620894 Low CTLA-4 expression in CD4+ helper T-cells in patients with fulminant type 1 diabetes.
7658 21620894 We analyzed the expression of cytotoxic T lymphocyte antigen 4 (CTLA-4) in CD4(+) helper T-cells in 16 patients with fulminant type 1 diabetes, 14 patients with type 1A diabetes, 10 patients with type 2 diabetes and 20 normal control subjects.
7659 21620894 There was a significant reduction in CTLA-4 expression in CD4(+) helper T-cells from patients with fulminant type 1 diabetes (P<0.05) compared with the other three groups.
7660 21620894 Low CTLA-4 expression was also observed in both CD4(+)CD25(high) T-cells and CD4(+)CD25(-) T-cells.
7661 21620894 There was a significant negative correlation between the proliferation of CD4(+)CD25(-) T-cells and the levels of CTLA-4.
7662 21620894 Intracellular expression of CTLA-4 in CD4(+) helper T-cells was not correlated with two CTLA-4 polymorphisms.
7663 21620894 In conclusion, the expression of CTLA-4 in CD4(+) helper T-cells was low in patients with fulminant type 1 diabetes.
7664 21620894 Low CTLA-4 expression in CD4+ helper T-cells in patients with fulminant type 1 diabetes.
7665 21620894 We analyzed the expression of cytotoxic T lymphocyte antigen 4 (CTLA-4) in CD4(+) helper T-cells in 16 patients with fulminant type 1 diabetes, 14 patients with type 1A diabetes, 10 patients with type 2 diabetes and 20 normal control subjects.
7666 21620894 There was a significant reduction in CTLA-4 expression in CD4(+) helper T-cells from patients with fulminant type 1 diabetes (P<0.05) compared with the other three groups.
7667 21620894 Low CTLA-4 expression was also observed in both CD4(+)CD25(high) T-cells and CD4(+)CD25(-) T-cells.
7668 21620894 There was a significant negative correlation between the proliferation of CD4(+)CD25(-) T-cells and the levels of CTLA-4.
7669 21620894 Intracellular expression of CTLA-4 in CD4(+) helper T-cells was not correlated with two CTLA-4 polymorphisms.
7670 21620894 In conclusion, the expression of CTLA-4 in CD4(+) helper T-cells was low in patients with fulminant type 1 diabetes.
7671 21620894 Low CTLA-4 expression in CD4+ helper T-cells in patients with fulminant type 1 diabetes.
7672 21620894 We analyzed the expression of cytotoxic T lymphocyte antigen 4 (CTLA-4) in CD4(+) helper T-cells in 16 patients with fulminant type 1 diabetes, 14 patients with type 1A diabetes, 10 patients with type 2 diabetes and 20 normal control subjects.
7673 21620894 There was a significant reduction in CTLA-4 expression in CD4(+) helper T-cells from patients with fulminant type 1 diabetes (P<0.05) compared with the other three groups.
7674 21620894 Low CTLA-4 expression was also observed in both CD4(+)CD25(high) T-cells and CD4(+)CD25(-) T-cells.
7675 21620894 There was a significant negative correlation between the proliferation of CD4(+)CD25(-) T-cells and the levels of CTLA-4.
7676 21620894 Intracellular expression of CTLA-4 in CD4(+) helper T-cells was not correlated with two CTLA-4 polymorphisms.
7677 21620894 In conclusion, the expression of CTLA-4 in CD4(+) helper T-cells was low in patients with fulminant type 1 diabetes.
7678 21626409 Herein, we discuss the critical sub-population of dendritic cells responsible for mediating both the cross-presentation of islet antigen to CD8(+) T cells and the direct presentation of beta cell antigen to CD4(+) T cells.
7679 21626409 These cells, termed merocytic dendritic cells (mcDC), are more numerous in non-obese diabetic (NOD), and antigen-loaded mcDC rescue CD8(+) T cells from peripheral anergy and deletion, and stimulate islet-reactive CD4(+) T cells.
7680 21626409 Herein, we discuss the critical sub-population of dendritic cells responsible for mediating both the cross-presentation of islet antigen to CD8(+) T cells and the direct presentation of beta cell antigen to CD4(+) T cells.
7681 21626409 These cells, termed merocytic dendritic cells (mcDC), are more numerous in non-obese diabetic (NOD), and antigen-loaded mcDC rescue CD8(+) T cells from peripheral anergy and deletion, and stimulate islet-reactive CD4(+) T cells.
7682 21641234 Anti-TNF rescue CD4+Foxp3+ regulatory T cells in patients with type 1 diabetes from effects mediated by TNF.
7683 21641234 It indicates that TNF reduces the number and frequency of regulatory CD4(+)Foxp3(+) T cells in children with diabetes type 1 and that in vitro treatment with anti-TNF antibody seems to rescue this cell subset from its defective effects.
7684 21641234 Anti-TNF rescue CD4+Foxp3+ regulatory T cells in patients with type 1 diabetes from effects mediated by TNF.
7685 21641234 It indicates that TNF reduces the number and frequency of regulatory CD4(+)Foxp3(+) T cells in children with diabetes type 1 and that in vitro treatment with anti-TNF antibody seems to rescue this cell subset from its defective effects.
7686 21647406 DCs play a crucial role in the presentation of autoantigen and activation of diabetogenic T cells, and IRF4 and IRF8 are crucial genes involved in the development of DCs.
7687 21647406 Importantly, levels of IRF4 and IRF8 expression were lower in tolerogenic bone marrow derived DCs (BMDCs) generated with GM-CSF as compared to immunogenic BMDCs generated with GM-CSF and IL-4.
7688 21647406 Analysis of splenic DCs subsets indicated that high expression of IRF4 was associated with increased levels of CD4(+)CD8α(-)IRF4(+)CD11c(+) DCs but not CD4(-)CD8α(+)IRF8(+)CD11c(+) DCs in NOD mice.
7689 21647406 Our results showed that IRF4 expression was up-regulated in NOD mice and correlated with the increased levels of CD4(+)CD8α(-) DCs, suggesting that IRF4 may be involved in abnormal DC functions in type 1 diabetes in NOD mice.
7690 21647406 DCs play a crucial role in the presentation of autoantigen and activation of diabetogenic T cells, and IRF4 and IRF8 are crucial genes involved in the development of DCs.
7691 21647406 Importantly, levels of IRF4 and IRF8 expression were lower in tolerogenic bone marrow derived DCs (BMDCs) generated with GM-CSF as compared to immunogenic BMDCs generated with GM-CSF and IL-4.
7692 21647406 Analysis of splenic DCs subsets indicated that high expression of IRF4 was associated with increased levels of CD4(+)CD8α(-)IRF4(+)CD11c(+) DCs but not CD4(-)CD8α(+)IRF8(+)CD11c(+) DCs in NOD mice.
7693 21647406 Our results showed that IRF4 expression was up-regulated in NOD mice and correlated with the increased levels of CD4(+)CD8α(-) DCs, suggesting that IRF4 may be involved in abnormal DC functions in type 1 diabetes in NOD mice.
7694 21670318 Furthermore, these cells were activated by Ag, leading to cytokine production (CD4) and efficient cytolytic killing of targets (CD8).
7695 21674137 A distinct role of CD4+ Th17- and Th17-stimulated CD8+ CTL in the pathogenesis of type 1 diabetes and experimental autoimmune encephalomyelitis.
7696 21674137 Both CD4(+) Th17-cells and CD8(+) cytotoxic T lymphocytes (CTLs) are involved in type 1 diabetes and experimental autoimmune encephalomyelitis (EAE).
7697 21674137 We generated ovalbumin (OVA)- or myelin oligodendrocyte glycoprotein (MOG)-specific Th17 cells expressing RORγt and IL-17 by in vitro co-culturing OVA-pulsed and MOG(35-55) peptide-pulsed dendritic cells (DC(OVA) and DC(MOG)) with CD4(+) T cells derived from transgenic OTII and MOG-T cell receptor mice, respectively.
7698 21674137 To assess the above question, we adoptively transferred OVA-specific Th17 cells into transgenic rat insulin promoter (RIP)-mOVA mice or RIP-mOVA mice treated with anti-CD8 antibody to deplete Th17-stimulated CD8(+) T cells.
7699 21674137 A distinct role of CD4+ Th17- and Th17-stimulated CD8+ CTL in the pathogenesis of type 1 diabetes and experimental autoimmune encephalomyelitis.
7700 21674137 Both CD4(+) Th17-cells and CD8(+) cytotoxic T lymphocytes (CTLs) are involved in type 1 diabetes and experimental autoimmune encephalomyelitis (EAE).
7701 21674137 We generated ovalbumin (OVA)- or myelin oligodendrocyte glycoprotein (MOG)-specific Th17 cells expressing RORγt and IL-17 by in vitro co-culturing OVA-pulsed and MOG(35-55) peptide-pulsed dendritic cells (DC(OVA) and DC(MOG)) with CD4(+) T cells derived from transgenic OTII and MOG-T cell receptor mice, respectively.
7702 21674137 To assess the above question, we adoptively transferred OVA-specific Th17 cells into transgenic rat insulin promoter (RIP)-mOVA mice or RIP-mOVA mice treated with anti-CD8 antibody to deplete Th17-stimulated CD8(+) T cells.
7703 21674137 A distinct role of CD4+ Th17- and Th17-stimulated CD8+ CTL in the pathogenesis of type 1 diabetes and experimental autoimmune encephalomyelitis.
7704 21674137 Both CD4(+) Th17-cells and CD8(+) cytotoxic T lymphocytes (CTLs) are involved in type 1 diabetes and experimental autoimmune encephalomyelitis (EAE).
7705 21674137 We generated ovalbumin (OVA)- or myelin oligodendrocyte glycoprotein (MOG)-specific Th17 cells expressing RORγt and IL-17 by in vitro co-culturing OVA-pulsed and MOG(35-55) peptide-pulsed dendritic cells (DC(OVA) and DC(MOG)) with CD4(+) T cells derived from transgenic OTII and MOG-T cell receptor mice, respectively.
7706 21674137 To assess the above question, we adoptively transferred OVA-specific Th17 cells into transgenic rat insulin promoter (RIP)-mOVA mice or RIP-mOVA mice treated with anti-CD8 antibody to deplete Th17-stimulated CD8(+) T cells.
7707 21697456 Both anti-PD-L1 mAbs precipitated diabetes in adoptive transfer models of CD4(+) and CD8(+) T cell-driven diabetes.
7708 21697456 Taken together, these data demonstrate that the PD-L1:B7-1 pathway inhibits potentially pathogenic self-reactive effector CD4(+) and CD8(+) T cell responses in vivo, and suggest that the immunoinhibitory functions of this pathway may be particularly important during the later phases of diabetogenesis.
7709 21697456 Both anti-PD-L1 mAbs precipitated diabetes in adoptive transfer models of CD4(+) and CD8(+) T cell-driven diabetes.
7710 21697456 Taken together, these data demonstrate that the PD-L1:B7-1 pathway inhibits potentially pathogenic self-reactive effector CD4(+) and CD8(+) T cell responses in vivo, and suggest that the immunoinhibitory functions of this pathway may be particularly important during the later phases of diabetogenesis.
7711 21708895 Recently described forkhead box protein 3 (FoxP3) transcription factor is a key molecule in CD4+ CD25hi+ T-cell characterization.
7712 21708895 Randomly selected iNKT cell clones (CD4+, double negative, CD8+) expressed FoxP3 mRNA and protein at different levels upon stimulation as supported by various approaches.
7713 21708895 Recently described forkhead box protein 3 (FoxP3) transcription factor is a key molecule in CD4+ CD25hi+ T-cell characterization.
7714 21708895 Randomly selected iNKT cell clones (CD4+, double negative, CD8+) expressed FoxP3 mRNA and protein at different levels upon stimulation as supported by various approaches.
7715 21715555 Uncoupling of proliferation and cytokines from suppression within the CD4+CD25+Foxp3+ T-cell compartment in the 1st year of human type 1 diabetes.
7716 21724410 Tissular T(regs): a unique population of adipose-tissue-resident Foxp3+CD4+ T cells that impacts organismal metabolism.
7717 21724410 Foxp3+CD4+ regulatory T (T(reg)) cells are a key population in controlling the immune response.
7718 21724410 Tissular T(regs): a unique population of adipose-tissue-resident Foxp3+CD4+ T cells that impacts organismal metabolism.
7719 21724410 Foxp3+CD4+ regulatory T (T(reg)) cells are a key population in controlling the immune response.
7720 21727190 Tissue-specific expression of B7x protects from CD4 T cell-mediated autoimmunity.
7721 21727190 B7x, an inhibitory member of the B7/CD28 superfamily, is highly expressed in a broad range of nonhematopoietic organs, suggesting a role in maintaining peripheral tolerance.
7722 21734016 Islet amyloid polypeptide is a target antigen for diabetogenic CD4+ T cells.
7723 21734073 Flow cytometric analysis showed a significant increase in the number of CD4(+)CD25(+)Foxp3(+) T regulatory cells in TNFR1-deficient mice.
7724 21737880 Tregs, defined by the markers CD4 and FoxP3, regulate immune responses by suppressing effector T cells and are recruited to sites of action by the chemokine CCL22.
7725 21737880 CCL22 expression increased the frequency of Tregs, produced higher levels of TGF-β in the CD4+ T cell population near islets, and decreased the frequency of circulating autoreactive CD8+ T cells and CD8+ IFN-γ–producing T cells.
7726 21737880 Tregs, defined by the markers CD4 and FoxP3, regulate immune responses by suppressing effector T cells and are recruited to sites of action by the chemokine CCL22.
7727 21737880 CCL22 expression increased the frequency of Tregs, produced higher levels of TGF-β in the CD4+ T cell population near islets, and decreased the frequency of circulating autoreactive CD8+ T cells and CD8+ IFN-γ–producing T cells.
7728 21742976 Anti-CD3 treatment induced a transient systemic rise in the percentage but not absolute number of CD4(+)Foxp3(+) Tregs due to selective depletion of CD4(+)Foxp3(-) conventional T cells.
7729 21742976 T cell depletion induced by FNB anti-CD3 mAb was independent of the proapoptotic proteins Fas, caspase-3, and Bim and was not inhibited by overexpression of the anti-apoptotic protein, Bcl-2.
7730 21785903 Fasting serum DPP-4 enzymatic activity, plasma glucose (FPG), CD26 expression on CD3+, CD4+ and CD8+ lymphocytes, HbA1c and body mass index (BMI) were assessed.
7731 21785903 DPP-4 enzymatic activity was determined by kinetic enzyme assay, ICA and GAD were assessed by ELISA.
7732 21785903 Determination of the CD26 expression on CD3+, CD4+ and CD8+ lymphocytes was performed by flow-cytometric analysis.
7733 21785903 Fasting serum DPP-4 activity was independent from the ICA or GAD status of patients with T1DM.
7734 21785903 Fasting serum DPP-4 enzymatic activity, plasma glucose (FPG), CD26 expression on CD3+, CD4+ and CD8+ lymphocytes, HbA1c and body mass index (BMI) were assessed.
7735 21785903 DPP-4 enzymatic activity was determined by kinetic enzyme assay, ICA and GAD were assessed by ELISA.
7736 21785903 Determination of the CD26 expression on CD3+, CD4+ and CD8+ lymphocytes was performed by flow-cytometric analysis.
7737 21785903 Fasting serum DPP-4 activity was independent from the ICA or GAD status of patients with T1DM.
7738 21807362 Surprisingly, CD4(+) T helper cells from these patients secreted similar levels of galectin-1 compared to healthy donors, probably mediated by Th17 cytokines.
7739 21807362 In conclusion, CD4(+) T helper lymphocytes from T1D patients produce normal levels of the immunoregulator galectin-1 but its reduced synthesis by monocytes helps to maintain a skewed pro-inflammatory response.
7740 21807362 Surprisingly, CD4(+) T helper cells from these patients secreted similar levels of galectin-1 compared to healthy donors, probably mediated by Th17 cytokines.
7741 21807362 In conclusion, CD4(+) T helper lymphocytes from T1D patients produce normal levels of the immunoregulator galectin-1 but its reduced synthesis by monocytes helps to maintain a skewed pro-inflammatory response.
7742 21820917 Three main types of CD4+ regulatory T cells can be distinguished based upon whether they express Foxp3 and differentiate naturally in the thymus (natural Tregs) or are induced in the periphery (inducible Tregs); or whether they are FoxP3 negative but secrete IL-10 in response to antigen (Tregulatory type 1, Tr1 cells).
7743 21850236 Regulation of cathepsin G reduces the activation of proinsulin-reactive T cells from type 1 diabetes patients.
7744 21850236 Self-proteins can be processed by cathepsins (Cats) within endocytic compartments and loaded to major histocompatibility complex (MHC) class II molecules for CD4(+) T cell inspection.
7745 21873518 Lymphocyte activation gene-3 (LAG-3; CD223) is a CD4 homolog that is required for maximal regulatory T cell function and for the control of CD4(+) and CD8(+) T cell homeostasis.
7746 21873518 Adoptive transfer experiments revealed that LAG-3 was primarily responsible for limiting the pathogenic potential of CD4(+) T cells and, to a lesser extent, CD8(+) T cells.
7747 21873518 Lag3(-)(/)(-) mice exhibited accelerated, invasive insulitis, corresponding to increased CD4(+) and CD8(+) T cell islet infiltration and intraislet proliferation.
7748 21873518 The frequencies of islet Ag-reactive chromogranin A-specific CD4(+) T cells and islet specific glucose-6-phosphatase-specific CD8(+) T cells were significantly increased in the islets of Lag3(-)(/)(-) mice, suggesting an early expansion of pathogenic clones that is normally restrained by LAG-3.
7749 21873518 We conclude that LAG-3 is necessary for regulating CD4(+) and CD8(+) T cell function during autoimmune diabetes, and thus may contribute to limiting autoimmunity in disease-prone environments.
7750 21873518 Lymphocyte activation gene-3 (LAG-3; CD223) is a CD4 homolog that is required for maximal regulatory T cell function and for the control of CD4(+) and CD8(+) T cell homeostasis.
7751 21873518 Adoptive transfer experiments revealed that LAG-3 was primarily responsible for limiting the pathogenic potential of CD4(+) T cells and, to a lesser extent, CD8(+) T cells.
7752 21873518 Lag3(-)(/)(-) mice exhibited accelerated, invasive insulitis, corresponding to increased CD4(+) and CD8(+) T cell islet infiltration and intraislet proliferation.
7753 21873518 The frequencies of islet Ag-reactive chromogranin A-specific CD4(+) T cells and islet specific glucose-6-phosphatase-specific CD8(+) T cells were significantly increased in the islets of Lag3(-)(/)(-) mice, suggesting an early expansion of pathogenic clones that is normally restrained by LAG-3.
7754 21873518 We conclude that LAG-3 is necessary for regulating CD4(+) and CD8(+) T cell function during autoimmune diabetes, and thus may contribute to limiting autoimmunity in disease-prone environments.
7755 21873518 Lymphocyte activation gene-3 (LAG-3; CD223) is a CD4 homolog that is required for maximal regulatory T cell function and for the control of CD4(+) and CD8(+) T cell homeostasis.
7756 21873518 Adoptive transfer experiments revealed that LAG-3 was primarily responsible for limiting the pathogenic potential of CD4(+) T cells and, to a lesser extent, CD8(+) T cells.
7757 21873518 Lag3(-)(/)(-) mice exhibited accelerated, invasive insulitis, corresponding to increased CD4(+) and CD8(+) T cell islet infiltration and intraislet proliferation.
7758 21873518 The frequencies of islet Ag-reactive chromogranin A-specific CD4(+) T cells and islet specific glucose-6-phosphatase-specific CD8(+) T cells were significantly increased in the islets of Lag3(-)(/)(-) mice, suggesting an early expansion of pathogenic clones that is normally restrained by LAG-3.
7759 21873518 We conclude that LAG-3 is necessary for regulating CD4(+) and CD8(+) T cell function during autoimmune diabetes, and thus may contribute to limiting autoimmunity in disease-prone environments.
7760 21873518 Lymphocyte activation gene-3 (LAG-3; CD223) is a CD4 homolog that is required for maximal regulatory T cell function and for the control of CD4(+) and CD8(+) T cell homeostasis.
7761 21873518 Adoptive transfer experiments revealed that LAG-3 was primarily responsible for limiting the pathogenic potential of CD4(+) T cells and, to a lesser extent, CD8(+) T cells.
7762 21873518 Lag3(-)(/)(-) mice exhibited accelerated, invasive insulitis, corresponding to increased CD4(+) and CD8(+) T cell islet infiltration and intraislet proliferation.
7763 21873518 The frequencies of islet Ag-reactive chromogranin A-specific CD4(+) T cells and islet specific glucose-6-phosphatase-specific CD8(+) T cells were significantly increased in the islets of Lag3(-)(/)(-) mice, suggesting an early expansion of pathogenic clones that is normally restrained by LAG-3.
7764 21873518 We conclude that LAG-3 is necessary for regulating CD4(+) and CD8(+) T cell function during autoimmune diabetes, and thus may contribute to limiting autoimmunity in disease-prone environments.
7765 21873518 Lymphocyte activation gene-3 (LAG-3; CD223) is a CD4 homolog that is required for maximal regulatory T cell function and for the control of CD4(+) and CD8(+) T cell homeostasis.
7766 21873518 Adoptive transfer experiments revealed that LAG-3 was primarily responsible for limiting the pathogenic potential of CD4(+) T cells and, to a lesser extent, CD8(+) T cells.
7767 21873518 Lag3(-)(/)(-) mice exhibited accelerated, invasive insulitis, corresponding to increased CD4(+) and CD8(+) T cell islet infiltration and intraislet proliferation.
7768 21873518 The frequencies of islet Ag-reactive chromogranin A-specific CD4(+) T cells and islet specific glucose-6-phosphatase-specific CD8(+) T cells were significantly increased in the islets of Lag3(-)(/)(-) mice, suggesting an early expansion of pathogenic clones that is normally restrained by LAG-3.
7769 21873518 We conclude that LAG-3 is necessary for regulating CD4(+) and CD8(+) T cell function during autoimmune diabetes, and thus may contribute to limiting autoimmunity in disease-prone environments.
7770 21873805 Association of circulating fractalkine (CX3CL1) and CX3CR1(+)CD4(+) T cells with common carotid artery intima-media thickness in patients with chronic kidney disease.
7771 21887518 Altered proportions of naïve, central memory and terminally differentiated central memory subsets among CD4+ and CD8 + T cells expressing CD26 in patients with type 1 diabetes.
7772 21887518 In peripheral blood from 55 patients with type 1 diabetes and 20 healthy controls, CD4(+) and CD8(+) T cells expressing CD26 were differentiated into naïve (N, CD45RA(+)CCR7(+)), central memory (CM, CD45RA(-)CCR7(+)), effector memory (EM, CD45RA(-)CCR7(-)), and terminally differentiated effector memory (TEMRA, CD45RA(+)CCR7(-)).
7773 21887518 In type 1 diabetes, CD4(+) and CD8(+) T cells expressing CD26 showed a distinctive differentiation profile: percentages and absolute numbers of CM and N cells were reduced, whereas those of TEMRA cells were markedly increased.
7774 21887518 Altered proportions of naïve, central memory and terminally differentiated central memory subsets among CD4+ and CD8 + T cells expressing CD26 in patients with type 1 diabetes.
7775 21887518 In peripheral blood from 55 patients with type 1 diabetes and 20 healthy controls, CD4(+) and CD8(+) T cells expressing CD26 were differentiated into naïve (N, CD45RA(+)CCR7(+)), central memory (CM, CD45RA(-)CCR7(+)), effector memory (EM, CD45RA(-)CCR7(-)), and terminally differentiated effector memory (TEMRA, CD45RA(+)CCR7(-)).
7776 21887518 In type 1 diabetes, CD4(+) and CD8(+) T cells expressing CD26 showed a distinctive differentiation profile: percentages and absolute numbers of CM and N cells were reduced, whereas those of TEMRA cells were markedly increased.
7777 21887518 Altered proportions of naïve, central memory and terminally differentiated central memory subsets among CD4+ and CD8 + T cells expressing CD26 in patients with type 1 diabetes.
7778 21887518 In peripheral blood from 55 patients with type 1 diabetes and 20 healthy controls, CD4(+) and CD8(+) T cells expressing CD26 were differentiated into naïve (N, CD45RA(+)CCR7(+)), central memory (CM, CD45RA(-)CCR7(+)), effector memory (EM, CD45RA(-)CCR7(-)), and terminally differentiated effector memory (TEMRA, CD45RA(+)CCR7(-)).
7779 21887518 In type 1 diabetes, CD4(+) and CD8(+) T cells expressing CD26 showed a distinctive differentiation profile: percentages and absolute numbers of CM and N cells were reduced, whereas those of TEMRA cells were markedly increased.
7780 21925473 IL-27, a cytokine consisting of IL-27p28 and Epstein-Barr virus-induced gene 3 (EBI3), binds a membrane-bound heterodimeric receptor consisting of the IL-27 receptor α chain (WSX-1) and gp130.
7781 21925473 We evaluated blood glucose and islet proinsulin concentrations, inflammatory cell infiltration in islets, and expression of IL-1β mRNA in pancreas in wild-type (WT), EBI3(-/-), and WSX-1(-/-) mice treated with streptozotocin (STZ).
7782 21925473 Hyperglycemia was augmented in EBI3(-/-) and WSX-1(-/-) mice compared with WT mice.
7783 21925473 Islet proinsulin levels after STZ treatment were lower in EBI3(-/-) and WSX-1(-/-) mice than in WT mice.
7784 21925473 The infiltration of islets by F4/80(+)CD11c(-)7/4(-) macrophages, CD4(+) T cells, and CD8(+) T cells was increased in EBI3(-/-) and WSX-1(-/-) mice compared with WT mice.
7785 21925473 The administration of recombinant IL-27, compared with control, decreased the blood glucose level, immune cell infiltration into islets, and IL-1β mRNA expression in the pancreas and increased islet proinsulin levels in WT and EBI3(-/-) mice.
7786 21949373 Specificity and detection of insulin-reactive CD4+ T cells in type 1 diabetes in the nonobese diabetic (NOD) mouse.
7787 21949373 In the nonobese diabetic (NOD) mouse model of type 1 diabetes (T1D), an insulin peptide (B:9-23) is a major target for pathogenic CD4(+) T cells.
7788 21949373 In the thymus, the absence of this type of processing combined with the low affinity of B:9-23 binding to IA(g7) in register 3 may explain the escape of insulin-specific CD4(+) T cells from the mechanisms that usually eliminate self-reactive T cells.
7789 21949373 Specificity and detection of insulin-reactive CD4+ T cells in type 1 diabetes in the nonobese diabetic (NOD) mouse.
7790 21949373 In the nonobese diabetic (NOD) mouse model of type 1 diabetes (T1D), an insulin peptide (B:9-23) is a major target for pathogenic CD4(+) T cells.
7791 21949373 In the thymus, the absence of this type of processing combined with the low affinity of B:9-23 binding to IA(g7) in register 3 may explain the escape of insulin-specific CD4(+) T cells from the mechanisms that usually eliminate self-reactive T cells.
7792 21949373 Specificity and detection of insulin-reactive CD4+ T cells in type 1 diabetes in the nonobese diabetic (NOD) mouse.
7793 21949373 In the nonobese diabetic (NOD) mouse model of type 1 diabetes (T1D), an insulin peptide (B:9-23) is a major target for pathogenic CD4(+) T cells.
7794 21949373 In the thymus, the absence of this type of processing combined with the low affinity of B:9-23 binding to IA(g7) in register 3 may explain the escape of insulin-specific CD4(+) T cells from the mechanisms that usually eliminate self-reactive T cells.
7795 21964948 The relationship of CD4(+)CD25(hi) T regulatory cells (Treg) and pro-inflammatory Th17 and Th1 subsets in T2D patients with metabolic disorders and complications need to be determined.
7796 21964948 The ratios of CD4(+)CD25(hi) Treg/Th17 cells and CD4(+)CD25(hi) Treg/Th1 cells, but not Th17/Th1 cells, were significantly decreased in T2D patients.
7797 21964948 The thymic output CD4(+)Foxp3(+)Helios(+) Tregs were normal but peripheral induced CD4(+)Foxp3(+)Helios(-) Tregs were decreased in T2D patients.
7798 21964948 The Bcl-2/Bax ratio decreased in CD4(+)CD25(hi) Tregs in T2D patients, supporting the increased sensitivity to cell death of these cells in T2D.
7799 21964948 CD4(+)CD25(hi)CD127(-) Tregs in T2D patients with microvascular complications were significantly less than T2D patients with macrovascular complications.
7800 21964948 Importantly, CD4(+)CD25(hi)CD127(-) Tregs were positively correlated with plasma IL-6, whereas IL-17(+)CD4(+)cells were negatively related to high-density lipoprotein (HDL).
7801 21964948 The relationship of CD4(+)CD25(hi) T regulatory cells (Treg) and pro-inflammatory Th17 and Th1 subsets in T2D patients with metabolic disorders and complications need to be determined.
7802 21964948 The ratios of CD4(+)CD25(hi) Treg/Th17 cells and CD4(+)CD25(hi) Treg/Th1 cells, but not Th17/Th1 cells, were significantly decreased in T2D patients.
7803 21964948 The thymic output CD4(+)Foxp3(+)Helios(+) Tregs were normal but peripheral induced CD4(+)Foxp3(+)Helios(-) Tregs were decreased in T2D patients.
7804 21964948 The Bcl-2/Bax ratio decreased in CD4(+)CD25(hi) Tregs in T2D patients, supporting the increased sensitivity to cell death of these cells in T2D.
7805 21964948 CD4(+)CD25(hi)CD127(-) Tregs in T2D patients with microvascular complications were significantly less than T2D patients with macrovascular complications.
7806 21964948 Importantly, CD4(+)CD25(hi)CD127(-) Tregs were positively correlated with plasma IL-6, whereas IL-17(+)CD4(+)cells were negatively related to high-density lipoprotein (HDL).
7807 21964948 The relationship of CD4(+)CD25(hi) T regulatory cells (Treg) and pro-inflammatory Th17 and Th1 subsets in T2D patients with metabolic disorders and complications need to be determined.
7808 21964948 The ratios of CD4(+)CD25(hi) Treg/Th17 cells and CD4(+)CD25(hi) Treg/Th1 cells, but not Th17/Th1 cells, were significantly decreased in T2D patients.
7809 21964948 The thymic output CD4(+)Foxp3(+)Helios(+) Tregs were normal but peripheral induced CD4(+)Foxp3(+)Helios(-) Tregs were decreased in T2D patients.
7810 21964948 The Bcl-2/Bax ratio decreased in CD4(+)CD25(hi) Tregs in T2D patients, supporting the increased sensitivity to cell death of these cells in T2D.
7811 21964948 CD4(+)CD25(hi)CD127(-) Tregs in T2D patients with microvascular complications were significantly less than T2D patients with macrovascular complications.
7812 21964948 Importantly, CD4(+)CD25(hi)CD127(-) Tregs were positively correlated with plasma IL-6, whereas IL-17(+)CD4(+)cells were negatively related to high-density lipoprotein (HDL).
7813 21964948 The relationship of CD4(+)CD25(hi) T regulatory cells (Treg) and pro-inflammatory Th17 and Th1 subsets in T2D patients with metabolic disorders and complications need to be determined.
7814 21964948 The ratios of CD4(+)CD25(hi) Treg/Th17 cells and CD4(+)CD25(hi) Treg/Th1 cells, but not Th17/Th1 cells, were significantly decreased in T2D patients.
7815 21964948 The thymic output CD4(+)Foxp3(+)Helios(+) Tregs were normal but peripheral induced CD4(+)Foxp3(+)Helios(-) Tregs were decreased in T2D patients.
7816 21964948 The Bcl-2/Bax ratio decreased in CD4(+)CD25(hi) Tregs in T2D patients, supporting the increased sensitivity to cell death of these cells in T2D.
7817 21964948 CD4(+)CD25(hi)CD127(-) Tregs in T2D patients with microvascular complications were significantly less than T2D patients with macrovascular complications.
7818 21964948 Importantly, CD4(+)CD25(hi)CD127(-) Tregs were positively correlated with plasma IL-6, whereas IL-17(+)CD4(+)cells were negatively related to high-density lipoprotein (HDL).
7819 21964948 The relationship of CD4(+)CD25(hi) T regulatory cells (Treg) and pro-inflammatory Th17 and Th1 subsets in T2D patients with metabolic disorders and complications need to be determined.
7820 21964948 The ratios of CD4(+)CD25(hi) Treg/Th17 cells and CD4(+)CD25(hi) Treg/Th1 cells, but not Th17/Th1 cells, were significantly decreased in T2D patients.
7821 21964948 The thymic output CD4(+)Foxp3(+)Helios(+) Tregs were normal but peripheral induced CD4(+)Foxp3(+)Helios(-) Tregs were decreased in T2D patients.
7822 21964948 The Bcl-2/Bax ratio decreased in CD4(+)CD25(hi) Tregs in T2D patients, supporting the increased sensitivity to cell death of these cells in T2D.
7823 21964948 CD4(+)CD25(hi)CD127(-) Tregs in T2D patients with microvascular complications were significantly less than T2D patients with macrovascular complications.
7824 21964948 Importantly, CD4(+)CD25(hi)CD127(-) Tregs were positively correlated with plasma IL-6, whereas IL-17(+)CD4(+)cells were negatively related to high-density lipoprotein (HDL).
7825 21964948 The relationship of CD4(+)CD25(hi) T regulatory cells (Treg) and pro-inflammatory Th17 and Th1 subsets in T2D patients with metabolic disorders and complications need to be determined.
7826 21964948 The ratios of CD4(+)CD25(hi) Treg/Th17 cells and CD4(+)CD25(hi) Treg/Th1 cells, but not Th17/Th1 cells, were significantly decreased in T2D patients.
7827 21964948 The thymic output CD4(+)Foxp3(+)Helios(+) Tregs were normal but peripheral induced CD4(+)Foxp3(+)Helios(-) Tregs were decreased in T2D patients.
7828 21964948 The Bcl-2/Bax ratio decreased in CD4(+)CD25(hi) Tregs in T2D patients, supporting the increased sensitivity to cell death of these cells in T2D.
7829 21964948 CD4(+)CD25(hi)CD127(-) Tregs in T2D patients with microvascular complications were significantly less than T2D patients with macrovascular complications.
7830 21964948 Importantly, CD4(+)CD25(hi)CD127(-) Tregs were positively correlated with plasma IL-6, whereas IL-17(+)CD4(+)cells were negatively related to high-density lipoprotein (HDL).
7831 21966503 Notably, oral treatment with GABA significantly increased the frequency of CD4(+)Foxp3(+) Tregs in mice.
7832 21983870 Alterations of peripheral CD4+CD25+Foxp3+ T regulatory cells in mice with STZ-induced diabetes.
7833 21983870 CD4+CD25+T regulatory cells (Tregs) play pivotal roles in controlling immune homeostasis, immunity and tolerance.
7834 21983870 The effect of hyperglycemia on CD4+CD25+Tregs has not yet been addressed.
7835 21983870 Here we used streptozotocin (STZ)-induced diabetic mice to study the effects of long-term hyperglycemia on CD4+CD25+Tregs in vivo.
7836 21983870 Four months after the onset of diabetes, the frequency of CD4+CD25+Foxp3+ T regulatory cells was significantly elevated in the spleen, peripheral blood lymphocytes (PBLs), peripheral lymph nodes (pLNs) and mesenteric LNs (mLNs).
7837 21983870 CD4+CD25+Tregs obtained from mice with diabetes displayed defective immunosuppressive functions and an activated/memory phenotype.
7838 21983870 Insulin administration rescued these changes in the CD4+CD25+ Tregs of diabetic mice.
7839 21983870 The percentage of thymic CD4+CD25+ naturally occurring Tregs (nTregs) and peripheral CD4+Helios+Foxp3+ nTregs were markedly enhanced in diabetic mice, indicating that thymic output contributed to the increased frequency of peripheral CD4+CD25+Tregs in diabetic mice.
7840 21983870 In an in vitro assay in which Tregs were induced from CD4+CD25- T cells by transforming growth factor (TGF)-β, high glucose enhanced the efficiency of CD4+CD25+Foxp3+ inducible Tregs (iTregs) induction.
7841 21983870 In addition, CD4+CD25- T cells from diabetic mice were more susceptible to CD4+CD25+Foxp3+ iTreg differentiation than those cells from control mice.
7842 21983870 These data, together with the enhanced frequency of CD4+Helios-Foxp3+ iTregs in the periphery of mice with diabetes, indicate that enhanced CD4+CD25+Foxp3+ iTreg induction also contributes to a peripheral increase iCD4+CD25+Tregs in diabetic mice.
7843 21983870 Our data show that hyperglycemia may alter the frequency of CD4+CD25+Foxp3+ Tregs in mice, which may result in late-state immune dysfunction in patients with diabetes.
7844 21983870 Alterations of peripheral CD4+CD25+Foxp3+ T regulatory cells in mice with STZ-induced diabetes.
7845 21983870 CD4+CD25+T regulatory cells (Tregs) play pivotal roles in controlling immune homeostasis, immunity and tolerance.
7846 21983870 The effect of hyperglycemia on CD4+CD25+Tregs has not yet been addressed.
7847 21983870 Here we used streptozotocin (STZ)-induced diabetic mice to study the effects of long-term hyperglycemia on CD4+CD25+Tregs in vivo.
7848 21983870 Four months after the onset of diabetes, the frequency of CD4+CD25+Foxp3+ T regulatory cells was significantly elevated in the spleen, peripheral blood lymphocytes (PBLs), peripheral lymph nodes (pLNs) and mesenteric LNs (mLNs).
7849 21983870 CD4+CD25+Tregs obtained from mice with diabetes displayed defective immunosuppressive functions and an activated/memory phenotype.
7850 21983870 Insulin administration rescued these changes in the CD4+CD25+ Tregs of diabetic mice.
7851 21983870 The percentage of thymic CD4+CD25+ naturally occurring Tregs (nTregs) and peripheral CD4+Helios+Foxp3+ nTregs were markedly enhanced in diabetic mice, indicating that thymic output contributed to the increased frequency of peripheral CD4+CD25+Tregs in diabetic mice.
7852 21983870 In an in vitro assay in which Tregs were induced from CD4+CD25- T cells by transforming growth factor (TGF)-β, high glucose enhanced the efficiency of CD4+CD25+Foxp3+ inducible Tregs (iTregs) induction.
7853 21983870 In addition, CD4+CD25- T cells from diabetic mice were more susceptible to CD4+CD25+Foxp3+ iTreg differentiation than those cells from control mice.
7854 21983870 These data, together with the enhanced frequency of CD4+Helios-Foxp3+ iTregs in the periphery of mice with diabetes, indicate that enhanced CD4+CD25+Foxp3+ iTreg induction also contributes to a peripheral increase iCD4+CD25+Tregs in diabetic mice.
7855 21983870 Our data show that hyperglycemia may alter the frequency of CD4+CD25+Foxp3+ Tregs in mice, which may result in late-state immune dysfunction in patients with diabetes.
7856 21983870 Alterations of peripheral CD4+CD25+Foxp3+ T regulatory cells in mice with STZ-induced diabetes.
7857 21983870 CD4+CD25+T regulatory cells (Tregs) play pivotal roles in controlling immune homeostasis, immunity and tolerance.
7858 21983870 The effect of hyperglycemia on CD4+CD25+Tregs has not yet been addressed.
7859 21983870 Here we used streptozotocin (STZ)-induced diabetic mice to study the effects of long-term hyperglycemia on CD4+CD25+Tregs in vivo.
7860 21983870 Four months after the onset of diabetes, the frequency of CD4+CD25+Foxp3+ T regulatory cells was significantly elevated in the spleen, peripheral blood lymphocytes (PBLs), peripheral lymph nodes (pLNs) and mesenteric LNs (mLNs).
7861 21983870 CD4+CD25+Tregs obtained from mice with diabetes displayed defective immunosuppressive functions and an activated/memory phenotype.
7862 21983870 Insulin administration rescued these changes in the CD4+CD25+ Tregs of diabetic mice.
7863 21983870 The percentage of thymic CD4+CD25+ naturally occurring Tregs (nTregs) and peripheral CD4+Helios+Foxp3+ nTregs were markedly enhanced in diabetic mice, indicating that thymic output contributed to the increased frequency of peripheral CD4+CD25+Tregs in diabetic mice.
7864 21983870 In an in vitro assay in which Tregs were induced from CD4+CD25- T cells by transforming growth factor (TGF)-β, high glucose enhanced the efficiency of CD4+CD25+Foxp3+ inducible Tregs (iTregs) induction.
7865 21983870 In addition, CD4+CD25- T cells from diabetic mice were more susceptible to CD4+CD25+Foxp3+ iTreg differentiation than those cells from control mice.
7866 21983870 These data, together with the enhanced frequency of CD4+Helios-Foxp3+ iTregs in the periphery of mice with diabetes, indicate that enhanced CD4+CD25+Foxp3+ iTreg induction also contributes to a peripheral increase iCD4+CD25+Tregs in diabetic mice.
7867 21983870 Our data show that hyperglycemia may alter the frequency of CD4+CD25+Foxp3+ Tregs in mice, which may result in late-state immune dysfunction in patients with diabetes.
7868 21983870 Alterations of peripheral CD4+CD25+Foxp3+ T regulatory cells in mice with STZ-induced diabetes.
7869 21983870 CD4+CD25+T regulatory cells (Tregs) play pivotal roles in controlling immune homeostasis, immunity and tolerance.
7870 21983870 The effect of hyperglycemia on CD4+CD25+Tregs has not yet been addressed.
7871 21983870 Here we used streptozotocin (STZ)-induced diabetic mice to study the effects of long-term hyperglycemia on CD4+CD25+Tregs in vivo.
7872 21983870 Four months after the onset of diabetes, the frequency of CD4+CD25+Foxp3+ T regulatory cells was significantly elevated in the spleen, peripheral blood lymphocytes (PBLs), peripheral lymph nodes (pLNs) and mesenteric LNs (mLNs).
7873 21983870 CD4+CD25+Tregs obtained from mice with diabetes displayed defective immunosuppressive functions and an activated/memory phenotype.
7874 21983870 Insulin administration rescued these changes in the CD4+CD25+ Tregs of diabetic mice.
7875 21983870 The percentage of thymic CD4+CD25+ naturally occurring Tregs (nTregs) and peripheral CD4+Helios+Foxp3+ nTregs were markedly enhanced in diabetic mice, indicating that thymic output contributed to the increased frequency of peripheral CD4+CD25+Tregs in diabetic mice.
7876 21983870 In an in vitro assay in which Tregs were induced from CD4+CD25- T cells by transforming growth factor (TGF)-β, high glucose enhanced the efficiency of CD4+CD25+Foxp3+ inducible Tregs (iTregs) induction.
7877 21983870 In addition, CD4+CD25- T cells from diabetic mice were more susceptible to CD4+CD25+Foxp3+ iTreg differentiation than those cells from control mice.
7878 21983870 These data, together with the enhanced frequency of CD4+Helios-Foxp3+ iTregs in the periphery of mice with diabetes, indicate that enhanced CD4+CD25+Foxp3+ iTreg induction also contributes to a peripheral increase iCD4+CD25+Tregs in diabetic mice.
7879 21983870 Our data show that hyperglycemia may alter the frequency of CD4+CD25+Foxp3+ Tregs in mice, which may result in late-state immune dysfunction in patients with diabetes.
7880 21983870 Alterations of peripheral CD4+CD25+Foxp3+ T regulatory cells in mice with STZ-induced diabetes.
7881 21983870 CD4+CD25+T regulatory cells (Tregs) play pivotal roles in controlling immune homeostasis, immunity and tolerance.
7882 21983870 The effect of hyperglycemia on CD4+CD25+Tregs has not yet been addressed.
7883 21983870 Here we used streptozotocin (STZ)-induced diabetic mice to study the effects of long-term hyperglycemia on CD4+CD25+Tregs in vivo.
7884 21983870 Four months after the onset of diabetes, the frequency of CD4+CD25+Foxp3+ T regulatory cells was significantly elevated in the spleen, peripheral blood lymphocytes (PBLs), peripheral lymph nodes (pLNs) and mesenteric LNs (mLNs).
7885 21983870 CD4+CD25+Tregs obtained from mice with diabetes displayed defective immunosuppressive functions and an activated/memory phenotype.
7886 21983870 Insulin administration rescued these changes in the CD4+CD25+ Tregs of diabetic mice.
7887 21983870 The percentage of thymic CD4+CD25+ naturally occurring Tregs (nTregs) and peripheral CD4+Helios+Foxp3+ nTregs were markedly enhanced in diabetic mice, indicating that thymic output contributed to the increased frequency of peripheral CD4+CD25+Tregs in diabetic mice.
7888 21983870 In an in vitro assay in which Tregs were induced from CD4+CD25- T cells by transforming growth factor (TGF)-β, high glucose enhanced the efficiency of CD4+CD25+Foxp3+ inducible Tregs (iTregs) induction.
7889 21983870 In addition, CD4+CD25- T cells from diabetic mice were more susceptible to CD4+CD25+Foxp3+ iTreg differentiation than those cells from control mice.
7890 21983870 These data, together with the enhanced frequency of CD4+Helios-Foxp3+ iTregs in the periphery of mice with diabetes, indicate that enhanced CD4+CD25+Foxp3+ iTreg induction also contributes to a peripheral increase iCD4+CD25+Tregs in diabetic mice.
7891 21983870 Our data show that hyperglycemia may alter the frequency of CD4+CD25+Foxp3+ Tregs in mice, which may result in late-state immune dysfunction in patients with diabetes.
7892 21983870 Alterations of peripheral CD4+CD25+Foxp3+ T regulatory cells in mice with STZ-induced diabetes.
7893 21983870 CD4+CD25+T regulatory cells (Tregs) play pivotal roles in controlling immune homeostasis, immunity and tolerance.
7894 21983870 The effect of hyperglycemia on CD4+CD25+Tregs has not yet been addressed.
7895 21983870 Here we used streptozotocin (STZ)-induced diabetic mice to study the effects of long-term hyperglycemia on CD4+CD25+Tregs in vivo.
7896 21983870 Four months after the onset of diabetes, the frequency of CD4+CD25+Foxp3+ T regulatory cells was significantly elevated in the spleen, peripheral blood lymphocytes (PBLs), peripheral lymph nodes (pLNs) and mesenteric LNs (mLNs).
7897 21983870 CD4+CD25+Tregs obtained from mice with diabetes displayed defective immunosuppressive functions and an activated/memory phenotype.
7898 21983870 Insulin administration rescued these changes in the CD4+CD25+ Tregs of diabetic mice.
7899 21983870 The percentage of thymic CD4+CD25+ naturally occurring Tregs (nTregs) and peripheral CD4+Helios+Foxp3+ nTregs were markedly enhanced in diabetic mice, indicating that thymic output contributed to the increased frequency of peripheral CD4+CD25+Tregs in diabetic mice.
7900 21983870 In an in vitro assay in which Tregs were induced from CD4+CD25- T cells by transforming growth factor (TGF)-β, high glucose enhanced the efficiency of CD4+CD25+Foxp3+ inducible Tregs (iTregs) induction.
7901 21983870 In addition, CD4+CD25- T cells from diabetic mice were more susceptible to CD4+CD25+Foxp3+ iTreg differentiation than those cells from control mice.
7902 21983870 These data, together with the enhanced frequency of CD4+Helios-Foxp3+ iTregs in the periphery of mice with diabetes, indicate that enhanced CD4+CD25+Foxp3+ iTreg induction also contributes to a peripheral increase iCD4+CD25+Tregs in diabetic mice.
7903 21983870 Our data show that hyperglycemia may alter the frequency of CD4+CD25+Foxp3+ Tregs in mice, which may result in late-state immune dysfunction in patients with diabetes.
7904 21983870 Alterations of peripheral CD4+CD25+Foxp3+ T regulatory cells in mice with STZ-induced diabetes.
7905 21983870 CD4+CD25+T regulatory cells (Tregs) play pivotal roles in controlling immune homeostasis, immunity and tolerance.
7906 21983870 The effect of hyperglycemia on CD4+CD25+Tregs has not yet been addressed.
7907 21983870 Here we used streptozotocin (STZ)-induced diabetic mice to study the effects of long-term hyperglycemia on CD4+CD25+Tregs in vivo.
7908 21983870 Four months after the onset of diabetes, the frequency of CD4+CD25+Foxp3+ T regulatory cells was significantly elevated in the spleen, peripheral blood lymphocytes (PBLs), peripheral lymph nodes (pLNs) and mesenteric LNs (mLNs).
7909 21983870 CD4+CD25+Tregs obtained from mice with diabetes displayed defective immunosuppressive functions and an activated/memory phenotype.
7910 21983870 Insulin administration rescued these changes in the CD4+CD25+ Tregs of diabetic mice.
7911 21983870 The percentage of thymic CD4+CD25+ naturally occurring Tregs (nTregs) and peripheral CD4+Helios+Foxp3+ nTregs were markedly enhanced in diabetic mice, indicating that thymic output contributed to the increased frequency of peripheral CD4+CD25+Tregs in diabetic mice.
7912 21983870 In an in vitro assay in which Tregs were induced from CD4+CD25- T cells by transforming growth factor (TGF)-β, high glucose enhanced the efficiency of CD4+CD25+Foxp3+ inducible Tregs (iTregs) induction.
7913 21983870 In addition, CD4+CD25- T cells from diabetic mice were more susceptible to CD4+CD25+Foxp3+ iTreg differentiation than those cells from control mice.
7914 21983870 These data, together with the enhanced frequency of CD4+Helios-Foxp3+ iTregs in the periphery of mice with diabetes, indicate that enhanced CD4+CD25+Foxp3+ iTreg induction also contributes to a peripheral increase iCD4+CD25+Tregs in diabetic mice.
7915 21983870 Our data show that hyperglycemia may alter the frequency of CD4+CD25+Foxp3+ Tregs in mice, which may result in late-state immune dysfunction in patients with diabetes.
7916 21983870 Alterations of peripheral CD4+CD25+Foxp3+ T regulatory cells in mice with STZ-induced diabetes.
7917 21983870 CD4+CD25+T regulatory cells (Tregs) play pivotal roles in controlling immune homeostasis, immunity and tolerance.
7918 21983870 The effect of hyperglycemia on CD4+CD25+Tregs has not yet been addressed.
7919 21983870 Here we used streptozotocin (STZ)-induced diabetic mice to study the effects of long-term hyperglycemia on CD4+CD25+Tregs in vivo.
7920 21983870 Four months after the onset of diabetes, the frequency of CD4+CD25+Foxp3+ T regulatory cells was significantly elevated in the spleen, peripheral blood lymphocytes (PBLs), peripheral lymph nodes (pLNs) and mesenteric LNs (mLNs).
7921 21983870 CD4+CD25+Tregs obtained from mice with diabetes displayed defective immunosuppressive functions and an activated/memory phenotype.
7922 21983870 Insulin administration rescued these changes in the CD4+CD25+ Tregs of diabetic mice.
7923 21983870 The percentage of thymic CD4+CD25+ naturally occurring Tregs (nTregs) and peripheral CD4+Helios+Foxp3+ nTregs were markedly enhanced in diabetic mice, indicating that thymic output contributed to the increased frequency of peripheral CD4+CD25+Tregs in diabetic mice.
7924 21983870 In an in vitro assay in which Tregs were induced from CD4+CD25- T cells by transforming growth factor (TGF)-β, high glucose enhanced the efficiency of CD4+CD25+Foxp3+ inducible Tregs (iTregs) induction.
7925 21983870 In addition, CD4+CD25- T cells from diabetic mice were more susceptible to CD4+CD25+Foxp3+ iTreg differentiation than those cells from control mice.
7926 21983870 These data, together with the enhanced frequency of CD4+Helios-Foxp3+ iTregs in the periphery of mice with diabetes, indicate that enhanced CD4+CD25+Foxp3+ iTreg induction also contributes to a peripheral increase iCD4+CD25+Tregs in diabetic mice.
7927 21983870 Our data show that hyperglycemia may alter the frequency of CD4+CD25+Foxp3+ Tregs in mice, which may result in late-state immune dysfunction in patients with diabetes.
7928 21983870 Alterations of peripheral CD4+CD25+Foxp3+ T regulatory cells in mice with STZ-induced diabetes.
7929 21983870 CD4+CD25+T regulatory cells (Tregs) play pivotal roles in controlling immune homeostasis, immunity and tolerance.
7930 21983870 The effect of hyperglycemia on CD4+CD25+Tregs has not yet been addressed.
7931 21983870 Here we used streptozotocin (STZ)-induced diabetic mice to study the effects of long-term hyperglycemia on CD4+CD25+Tregs in vivo.
7932 21983870 Four months after the onset of diabetes, the frequency of CD4+CD25+Foxp3+ T regulatory cells was significantly elevated in the spleen, peripheral blood lymphocytes (PBLs), peripheral lymph nodes (pLNs) and mesenteric LNs (mLNs).
7933 21983870 CD4+CD25+Tregs obtained from mice with diabetes displayed defective immunosuppressive functions and an activated/memory phenotype.
7934 21983870 Insulin administration rescued these changes in the CD4+CD25+ Tregs of diabetic mice.
7935 21983870 The percentage of thymic CD4+CD25+ naturally occurring Tregs (nTregs) and peripheral CD4+Helios+Foxp3+ nTregs were markedly enhanced in diabetic mice, indicating that thymic output contributed to the increased frequency of peripheral CD4+CD25+Tregs in diabetic mice.
7936 21983870 In an in vitro assay in which Tregs were induced from CD4+CD25- T cells by transforming growth factor (TGF)-β, high glucose enhanced the efficiency of CD4+CD25+Foxp3+ inducible Tregs (iTregs) induction.
7937 21983870 In addition, CD4+CD25- T cells from diabetic mice were more susceptible to CD4+CD25+Foxp3+ iTreg differentiation than those cells from control mice.
7938 21983870 These data, together with the enhanced frequency of CD4+Helios-Foxp3+ iTregs in the periphery of mice with diabetes, indicate that enhanced CD4+CD25+Foxp3+ iTreg induction also contributes to a peripheral increase iCD4+CD25+Tregs in diabetic mice.
7939 21983870 Our data show that hyperglycemia may alter the frequency of CD4+CD25+Foxp3+ Tregs in mice, which may result in late-state immune dysfunction in patients with diabetes.
7940 21983870 Alterations of peripheral CD4+CD25+Foxp3+ T regulatory cells in mice with STZ-induced diabetes.
7941 21983870 CD4+CD25+T regulatory cells (Tregs) play pivotal roles in controlling immune homeostasis, immunity and tolerance.
7942 21983870 The effect of hyperglycemia on CD4+CD25+Tregs has not yet been addressed.
7943 21983870 Here we used streptozotocin (STZ)-induced diabetic mice to study the effects of long-term hyperglycemia on CD4+CD25+Tregs in vivo.
7944 21983870 Four months after the onset of diabetes, the frequency of CD4+CD25+Foxp3+ T regulatory cells was significantly elevated in the spleen, peripheral blood lymphocytes (PBLs), peripheral lymph nodes (pLNs) and mesenteric LNs (mLNs).
7945 21983870 CD4+CD25+Tregs obtained from mice with diabetes displayed defective immunosuppressive functions and an activated/memory phenotype.
7946 21983870 Insulin administration rescued these changes in the CD4+CD25+ Tregs of diabetic mice.
7947 21983870 The percentage of thymic CD4+CD25+ naturally occurring Tregs (nTregs) and peripheral CD4+Helios+Foxp3+ nTregs were markedly enhanced in diabetic mice, indicating that thymic output contributed to the increased frequency of peripheral CD4+CD25+Tregs in diabetic mice.
7948 21983870 In an in vitro assay in which Tregs were induced from CD4+CD25- T cells by transforming growth factor (TGF)-β, high glucose enhanced the efficiency of CD4+CD25+Foxp3+ inducible Tregs (iTregs) induction.
7949 21983870 In addition, CD4+CD25- T cells from diabetic mice were more susceptible to CD4+CD25+Foxp3+ iTreg differentiation than those cells from control mice.
7950 21983870 These data, together with the enhanced frequency of CD4+Helios-Foxp3+ iTregs in the periphery of mice with diabetes, indicate that enhanced CD4+CD25+Foxp3+ iTreg induction also contributes to a peripheral increase iCD4+CD25+Tregs in diabetic mice.
7951 21983870 Our data show that hyperglycemia may alter the frequency of CD4+CD25+Foxp3+ Tregs in mice, which may result in late-state immune dysfunction in patients with diabetes.
7952 21983870 Alterations of peripheral CD4+CD25+Foxp3+ T regulatory cells in mice with STZ-induced diabetes.
7953 21983870 CD4+CD25+T regulatory cells (Tregs) play pivotal roles in controlling immune homeostasis, immunity and tolerance.
7954 21983870 The effect of hyperglycemia on CD4+CD25+Tregs has not yet been addressed.
7955 21983870 Here we used streptozotocin (STZ)-induced diabetic mice to study the effects of long-term hyperglycemia on CD4+CD25+Tregs in vivo.
7956 21983870 Four months after the onset of diabetes, the frequency of CD4+CD25+Foxp3+ T regulatory cells was significantly elevated in the spleen, peripheral blood lymphocytes (PBLs), peripheral lymph nodes (pLNs) and mesenteric LNs (mLNs).
7957 21983870 CD4+CD25+Tregs obtained from mice with diabetes displayed defective immunosuppressive functions and an activated/memory phenotype.
7958 21983870 Insulin administration rescued these changes in the CD4+CD25+ Tregs of diabetic mice.
7959 21983870 The percentage of thymic CD4+CD25+ naturally occurring Tregs (nTregs) and peripheral CD4+Helios+Foxp3+ nTregs were markedly enhanced in diabetic mice, indicating that thymic output contributed to the increased frequency of peripheral CD4+CD25+Tregs in diabetic mice.
7960 21983870 In an in vitro assay in which Tregs were induced from CD4+CD25- T cells by transforming growth factor (TGF)-β, high glucose enhanced the efficiency of CD4+CD25+Foxp3+ inducible Tregs (iTregs) induction.
7961 21983870 In addition, CD4+CD25- T cells from diabetic mice were more susceptible to CD4+CD25+Foxp3+ iTreg differentiation than those cells from control mice.
7962 21983870 These data, together with the enhanced frequency of CD4+Helios-Foxp3+ iTregs in the periphery of mice with diabetes, indicate that enhanced CD4+CD25+Foxp3+ iTreg induction also contributes to a peripheral increase iCD4+CD25+Tregs in diabetic mice.
7963 21983870 Our data show that hyperglycemia may alter the frequency of CD4+CD25+Foxp3+ Tregs in mice, which may result in late-state immune dysfunction in patients with diabetes.
7964 21983870 Alterations of peripheral CD4+CD25+Foxp3+ T regulatory cells in mice with STZ-induced diabetes.
7965 21983870 CD4+CD25+T regulatory cells (Tregs) play pivotal roles in controlling immune homeostasis, immunity and tolerance.
7966 21983870 The effect of hyperglycemia on CD4+CD25+Tregs has not yet been addressed.
7967 21983870 Here we used streptozotocin (STZ)-induced diabetic mice to study the effects of long-term hyperglycemia on CD4+CD25+Tregs in vivo.
7968 21983870 Four months after the onset of diabetes, the frequency of CD4+CD25+Foxp3+ T regulatory cells was significantly elevated in the spleen, peripheral blood lymphocytes (PBLs), peripheral lymph nodes (pLNs) and mesenteric LNs (mLNs).
7969 21983870 CD4+CD25+Tregs obtained from mice with diabetes displayed defective immunosuppressive functions and an activated/memory phenotype.
7970 21983870 Insulin administration rescued these changes in the CD4+CD25+ Tregs of diabetic mice.
7971 21983870 The percentage of thymic CD4+CD25+ naturally occurring Tregs (nTregs) and peripheral CD4+Helios+Foxp3+ nTregs were markedly enhanced in diabetic mice, indicating that thymic output contributed to the increased frequency of peripheral CD4+CD25+Tregs in diabetic mice.
7972 21983870 In an in vitro assay in which Tregs were induced from CD4+CD25- T cells by transforming growth factor (TGF)-β, high glucose enhanced the efficiency of CD4+CD25+Foxp3+ inducible Tregs (iTregs) induction.
7973 21983870 In addition, CD4+CD25- T cells from diabetic mice were more susceptible to CD4+CD25+Foxp3+ iTreg differentiation than those cells from control mice.
7974 21983870 These data, together with the enhanced frequency of CD4+Helios-Foxp3+ iTregs in the periphery of mice with diabetes, indicate that enhanced CD4+CD25+Foxp3+ iTreg induction also contributes to a peripheral increase iCD4+CD25+Tregs in diabetic mice.
7975 21983870 Our data show that hyperglycemia may alter the frequency of CD4+CD25+Foxp3+ Tregs in mice, which may result in late-state immune dysfunction in patients with diabetes.
7976 22063316 We show that treatment of non-obese diabetic (NOD) mice with an OX40 agonistic antibody (OX86) reduced type 1 diabetes (T1D) incidence by inducing both CD4(+)CD25(+)Foxp3(+) Tregs and CD4(+)Foxp3(-) T cells expressing the latency-associated peptide (LAP).
7977 22063316 These OX86-induced CD4(+)Foxp3(-)LAP(+) T cells also demonstrated suppressive activity in vitro.
7978 22063316 Synergy resulted from an expansion of IL-10-expressing insB9:23-reactive Tregs which augmented the proportion of CD4(+) T cells with in vivo suppressive activity.
7979 22063316 We show that treatment of non-obese diabetic (NOD) mice with an OX40 agonistic antibody (OX86) reduced type 1 diabetes (T1D) incidence by inducing both CD4(+)CD25(+)Foxp3(+) Tregs and CD4(+)Foxp3(-) T cells expressing the latency-associated peptide (LAP).
7980 22063316 These OX86-induced CD4(+)Foxp3(-)LAP(+) T cells also demonstrated suppressive activity in vitro.
7981 22063316 Synergy resulted from an expansion of IL-10-expressing insB9:23-reactive Tregs which augmented the proportion of CD4(+) T cells with in vivo suppressive activity.
7982 22063316 We show that treatment of non-obese diabetic (NOD) mice with an OX40 agonistic antibody (OX86) reduced type 1 diabetes (T1D) incidence by inducing both CD4(+)CD25(+)Foxp3(+) Tregs and CD4(+)Foxp3(-) T cells expressing the latency-associated peptide (LAP).
7983 22063316 These OX86-induced CD4(+)Foxp3(-)LAP(+) T cells also demonstrated suppressive activity in vitro.
7984 22063316 Synergy resulted from an expansion of IL-10-expressing insB9:23-reactive Tregs which augmented the proportion of CD4(+) T cells with in vivo suppressive activity.
7985 22065673 In nonobese diabetic (NOD) mice, two sets of autoreactive CD4(+) T cells recognize the B:9-23 segment of the insulin B chain.
7986 22068235 Given the role of Fas-mediated signaling in regulating effector T cell responses, we tested if pancreatic islets can be engineered ex vivo to display on their surface an apoptotic form of Fas ligand protein chimeric with streptavidin (SA-FasL) and whether such engineered islets induce tolerance in allogeneic hosts.
7987 22068235 Tolerance was initiated and maintained by CD4(+)CD25(+)Foxp3(+) regulatory T (Treg) cells, as their depletion early during tolerance induction or late after established tolerance resulted in prompt graft rejection.
7988 22116888 FoxP3-expressing CD4(+) regulatory T cells (Tregs) are potential candidates to control autoimmunity because they play a central role in maintaining self-tolerance.
7989 22140261 Furthermore, we found that Gr1(+)CD11b(+) cells could suppress diabetogenic CD4 and CD8 T cell function in an IL-10-, NO-, and cell contact-dependent manner.
7990 22156513 Here, we have reevaluated the contribution of CD28-CD80/86 costimulation in the LCMV system by use of CD80/86-deficient mice, and our results demonstrate that a disruption of CD28-CD80/86 signaling compromises the magnitude, phenotype, and/or functionality of LCMV-specific CD8(+) and/or CD4(+) T cell populations in all stages of the T cell response.
7991 22156513 Notably, a profound inhibition of secondary T cell immunity in LCMV-immune CD80/86-deficient mice emerged as a composite of both defective memory T cell development and a specific requirement for CD80 but not CD86 in the recall response, while a related experimental scenario of CD28-dependent yet CD80/86-independent secondary CD8(+) T cell immunity suggests the existence of a CD28 ligand other than CD80/86.
7992 22156513 Furthermore, we provide evidence that regulatory T cells (T(REG)s), the homeostasis of which is altered in CD80/86(-/-) mice, contribute to restrained LCMV-specific CD8(+) T cell responses in the presence of CD80/86.
7993 22174447 We tested these hypotheses by investigating whether infection with the filarial nematode Litomosoides sigmodontis prevents diabetes onset in IL-4-deficient NOD mice and whether depletion or absence of regulatory T cells, IL-10, or TGF-β alters helminth-mediated protection.
7994 22174447 Infections in immunocompetent and IL-4-deficient NOD mice were accompanied by increases in CD4(+)CD25(+)Foxp3(+) regulatory T cell frequencies and numbers, respectively, and helminth infection increased the proliferation of CD4(+)Foxp3(+) cells.
7995 22174945 A phase II clinical trial with glutamic acid decarboxylase (GAD) 65 formulated with aluminium hydroxide (GAD-alum) has shown efficacy in preserving residual insulin secretion in children and adolescents with recent-onset type 1 diabetes (T1D).
7996 22174945 Peripheral blood mononuclear cells (PBMC) were stimulated in vitro with GAD(65).
7997 22174945 Frequencies of naïve, central and effector memory CD4+ and CD8+ T cells were measured, together with cytokine secretion, proliferation, gene expression and serum GAD(65) autoantibody (GADA) levels.
7998 22174945 Moreover, post-treatment serum GADA titres remained persistently increased in the GAD-alum arm, but did not inhibit GAD(65) enzymatic activity.
7999 22174945 In parallel to a GAD(65)-induced T-cell activation, our results show induction of T-cell inhibitory pathways important for regulating the GAD(65) immunity.
8000 22178917 The combined action of these proteases generates antigenic peptides from antigens, which are loaded to MHC II molecules for CD4+ T cell presentation.
8001 22186414 Galectin-9 and T cell immunoglobulin mucin-3 pathway is a therapeutic target for type 1 diabetes.
8002 22186414 Galectin-9 (Gal-9), a ligand for T cell Ig mucin-3 (Tim-3), induces apoptosis in cluster of differentiation 4 (CD4)(+) Tim-3(+) T helper 1 (T(H)1) cells via the Gal-9-Tim-3 pathway and negatively regulates T(H)1 immunity.
8003 22186414 Gal-9 induced apoptosis of CD4(+)Tim-3(+) T(H)1 cells at the concentration of 0.2 μM, whereas RMT3-23 failed to enhance the apoptosis of CD4(+)Tim-3(+) T(H)1 cells.
8004 22186414 Although Gal-9 exhibited certain therapeutic potential against autoimmune diabetes by enhancing apoptosis of CD4(+)Tim-3(+) T(H)1 cells, RMT3-23 exhibited prominent therapeutic efficacy by suppressing the TNF-α production and activation of DC.
8005 22186414 Galectin-9 and T cell immunoglobulin mucin-3 pathway is a therapeutic target for type 1 diabetes.
8006 22186414 Galectin-9 (Gal-9), a ligand for T cell Ig mucin-3 (Tim-3), induces apoptosis in cluster of differentiation 4 (CD4)(+) Tim-3(+) T helper 1 (T(H)1) cells via the Gal-9-Tim-3 pathway and negatively regulates T(H)1 immunity.
8007 22186414 Gal-9 induced apoptosis of CD4(+)Tim-3(+) T(H)1 cells at the concentration of 0.2 μM, whereas RMT3-23 failed to enhance the apoptosis of CD4(+)Tim-3(+) T(H)1 cells.
8008 22186414 Although Gal-9 exhibited certain therapeutic potential against autoimmune diabetes by enhancing apoptosis of CD4(+)Tim-3(+) T(H)1 cells, RMT3-23 exhibited prominent therapeutic efficacy by suppressing the TNF-α production and activation of DC.
8009 22186414 Galectin-9 and T cell immunoglobulin mucin-3 pathway is a therapeutic target for type 1 diabetes.
8010 22186414 Galectin-9 (Gal-9), a ligand for T cell Ig mucin-3 (Tim-3), induces apoptosis in cluster of differentiation 4 (CD4)(+) Tim-3(+) T helper 1 (T(H)1) cells via the Gal-9-Tim-3 pathway and negatively regulates T(H)1 immunity.
8011 22186414 Gal-9 induced apoptosis of CD4(+)Tim-3(+) T(H)1 cells at the concentration of 0.2 μM, whereas RMT3-23 failed to enhance the apoptosis of CD4(+)Tim-3(+) T(H)1 cells.
8012 22186414 Although Gal-9 exhibited certain therapeutic potential against autoimmune diabetes by enhancing apoptosis of CD4(+)Tim-3(+) T(H)1 cells, RMT3-23 exhibited prominent therapeutic efficacy by suppressing the TNF-α production and activation of DC.
8013 22228716 We determined all major T-cell subpopulations via six-color flow cytometry, including CD8+ and CD4+ T cells, CD4+ T-helper (Th) subpopulations, and natural CD4+CD25+FoxP3+ T-regulatory (Treg) cells.
8014 22228716 Morbidly obese subjects had a selective increase in peripheral blood CD4+ naive, memory, natural CD4+CD25+FoxP3+ Treg, and Th2 T cells, whereas CD8+ T cells were normal.
8015 22228716 CD4+ and CD8+ T-cell proliferation was increased, whereas the TCRB repertoire was not significantly altered.
8016 22228716 Plasma levels of cytokines CCL5 and IL-7 were elevated.
8017 22228716 CD4+ T-cell numbers correlated positively with fasting insulin levels.
8018 22228716 The peripheral blood T-cell compartment of morbidly obese subjects is characterized by increased homeostatic T-cell proliferation to which cytokines IL-7 and CCL5, among others, might contribute.
8019 22228716 We determined all major T-cell subpopulations via six-color flow cytometry, including CD8+ and CD4+ T cells, CD4+ T-helper (Th) subpopulations, and natural CD4+CD25+FoxP3+ T-regulatory (Treg) cells.
8020 22228716 Morbidly obese subjects had a selective increase in peripheral blood CD4+ naive, memory, natural CD4+CD25+FoxP3+ Treg, and Th2 T cells, whereas CD8+ T cells were normal.
8021 22228716 CD4+ and CD8+ T-cell proliferation was increased, whereas the TCRB repertoire was not significantly altered.
8022 22228716 Plasma levels of cytokines CCL5 and IL-7 were elevated.
8023 22228716 CD4+ T-cell numbers correlated positively with fasting insulin levels.
8024 22228716 The peripheral blood T-cell compartment of morbidly obese subjects is characterized by increased homeostatic T-cell proliferation to which cytokines IL-7 and CCL5, among others, might contribute.
8025 22228716 We determined all major T-cell subpopulations via six-color flow cytometry, including CD8+ and CD4+ T cells, CD4+ T-helper (Th) subpopulations, and natural CD4+CD25+FoxP3+ T-regulatory (Treg) cells.
8026 22228716 Morbidly obese subjects had a selective increase in peripheral blood CD4+ naive, memory, natural CD4+CD25+FoxP3+ Treg, and Th2 T cells, whereas CD8+ T cells were normal.
8027 22228716 CD4+ and CD8+ T-cell proliferation was increased, whereas the TCRB repertoire was not significantly altered.
8028 22228716 Plasma levels of cytokines CCL5 and IL-7 were elevated.
8029 22228716 CD4+ T-cell numbers correlated positively with fasting insulin levels.
8030 22228716 The peripheral blood T-cell compartment of morbidly obese subjects is characterized by increased homeostatic T-cell proliferation to which cytokines IL-7 and CCL5, among others, might contribute.
8031 22228716 We determined all major T-cell subpopulations via six-color flow cytometry, including CD8+ and CD4+ T cells, CD4+ T-helper (Th) subpopulations, and natural CD4+CD25+FoxP3+ T-regulatory (Treg) cells.
8032 22228716 Morbidly obese subjects had a selective increase in peripheral blood CD4+ naive, memory, natural CD4+CD25+FoxP3+ Treg, and Th2 T cells, whereas CD8+ T cells were normal.
8033 22228716 CD4+ and CD8+ T-cell proliferation was increased, whereas the TCRB repertoire was not significantly altered.
8034 22228716 Plasma levels of cytokines CCL5 and IL-7 were elevated.
8035 22228716 CD4+ T-cell numbers correlated positively with fasting insulin levels.
8036 22228716 The peripheral blood T-cell compartment of morbidly obese subjects is characterized by increased homeostatic T-cell proliferation to which cytokines IL-7 and CCL5, among others, might contribute.
8037 22238605 Depletion of B2 but not B1a B cells in BAFF receptor-deficient ApoE mice attenuates atherosclerosis by potently ameliorating arterial inflammation.
8038 22238605 Here, we examined the development of atherosclerosis in BAFF-R deficient ApoE(-/-) mice because B2 cells but not B1a cells are selectively depleted in BAFF-R deficient mice.
8039 22238605 We fed BAFF-R(-/-) ApoE(-/-) (BaffR.ApoE DKO) and BAFF-R(+/+)ApoE(-/-) (ApoE KO) mice a high fat diet (HFD) for 8-weeks.
8040 22238605 BAFF-R deficiency in ApoE(-/-) mice was also associated with a reduced expression of VCAM-1 and fewer macrophages, dendritic cells, CD4+ and CD8+ T cell infiltrates and PCNA+ cells in lesions.
8041 22270834 Dendritic cells with TGF-β1 and IL-2 differentiate naive CD4+ T cells into alloantigen-specific and allograft protective Foxp3+ regulatory T cells.
8042 22277969 Moreover, IL-10 expression by CD4(+)CD25(high)CCR6(+)FoxP3 cells returning to the peripheral circulation was increased in patients with type 1 diabetes treated with teplizumab.
8043 22287719 Adjuvant immunotherapy of experimental autoimmune encephalomyelitis: immature myeloid cells expressing CXCL10 and CXCL16 attract CXCR3+CXCR6+ and myelin-specific T cells to the draining lymph nodes rather than the central nervous system.
8044 22287719 Immature myeloid cells in dLNs expressed the chemokines CXCL10 and CXCL16 in an IFN-γ-dependent manner.
8045 22287719 Subsequently, CD4(+) T cells coexpressing the cognate chemokine receptors CXCR3 and CXCR6 and myelin oligodendrocyte glycoprotein (MOG)-specific CD4(+) T cells accumulated within the chemokine-expressing dLNs, rather than within the CNS.
8046 22287719 In addition to altering the distribution of MOG-specific T cells, adjuvant treatment suppressed development of MOG-specific IL-17.
8047 22287719 Thus, adjuvant immunotherapy of EAE requires IFN-γ, which suppresses development of the Th17 response, and diverts autoreactive T cells away from the CNS toward immature myeloid cells expressing CXCL10 and CXCL16 in the lymph nodes.
8048 22291182 The interplay of CD4(+) and CD8(+) T cells targeting autoantigens is responsible for the progression of a number of autoimmune diseases, including type 1 diabetes mellitus (T1D).
8049 22291182 The anti-CD98hc mAb also inhibited Ag-specific proliferation and the acquisition of effector function by CD4(+) and CD8(+) T cells in vitro and in vivo.
8050 22291182 The interplay of CD4(+) and CD8(+) T cells targeting autoantigens is responsible for the progression of a number of autoimmune diseases, including type 1 diabetes mellitus (T1D).
8051 22291182 The anti-CD98hc mAb also inhibited Ag-specific proliferation and the acquisition of effector function by CD4(+) and CD8(+) T cells in vitro and in vivo.
8052 22294241 T lymphocytes bearing the αβ T cell receptor (TCR) but lacking CD4, CD8, and markers of natural killer (NK) cell differentiation are known as 'double-negative' (DN) T cells and have been described in both humans and rodent models.
8053 22323564 Insulin sensitive and resistant obesity in humans: AMPK activity, oxidative stress, and depot-specific changes in gene expression in adipose tissue.
8054 22323564 We previously reported that adenosine monophosphate-activated protein kinase (AMPK) activity is lower in adipose tissue of morbidly obese individuals who are insulin resistant than in comparably obese people who are insulin sensitive.
8055 22323564 We confirmed that AMPK activity is diminished in the insulin resistant group.
8056 22323564 A custom PCR array revealed increases in mRNA levels of a wide variety of genes associated with inflammation and decreases in PGC-1α and Nampt in omental fat of the insulin resistant group.
8057 22323564 In contrast, subcutaneous abdominal fat of the same patients showed increases in PTP-1b, VEGFa, IFNγ, PAI-1, and NOS-2 not observed in omental fat.
8058 22323564 Only angiotensinogen and CD4(+) mRNA levels were increased in both depots.
8059 22323564 Thus, adipose tissues of markedly obese insulin resistant individuals uniformly show decreased AMPK activity and increased oxidative stress compared with insulin sensitive patients.
8060 22341303 We performed our analysis in 5 pairs of monozygotic twins, 3 of which were concordant and 2 discordant for T1D, by combining flow cytometry and CDR3 spectratyping on both CD4+ and CD8+ T-cells.
8061 22371394 CD4(+) type II NKT cells mediate ICOS and programmed death-1-dependent regulation of type 1 diabetes.
8062 22371394 In this study, we show that CD4(+) 24αβ type II NKT cells, but not CD4/CD8 double-negative NKT cells, were sufficient to downregulate diabetogenic CD4(+) BDC2.5 NOD T cells in adoptive transfer experiments.
8063 22371394 CD4(+) 24αβ NKT cells exhibited a memory phenotype including high ICOS expression, increased cytokine production, and limited display of NK cell markers, compared with double-negative 24αβ NKT cells.
8064 22371394 CD4(+) type II NKT cells mediate ICOS and programmed death-1-dependent regulation of type 1 diabetes.
8065 22371394 In this study, we show that CD4(+) 24αβ type II NKT cells, but not CD4/CD8 double-negative NKT cells, were sufficient to downregulate diabetogenic CD4(+) BDC2.5 NOD T cells in adoptive transfer experiments.
8066 22371394 CD4(+) 24αβ NKT cells exhibited a memory phenotype including high ICOS expression, increased cytokine production, and limited display of NK cell markers, compared with double-negative 24αβ NKT cells.
8067 22371394 CD4(+) type II NKT cells mediate ICOS and programmed death-1-dependent regulation of type 1 diabetes.
8068 22371394 In this study, we show that CD4(+) 24αβ type II NKT cells, but not CD4/CD8 double-negative NKT cells, were sufficient to downregulate diabetogenic CD4(+) BDC2.5 NOD T cells in adoptive transfer experiments.
8069 22371394 CD4(+) 24αβ NKT cells exhibited a memory phenotype including high ICOS expression, increased cytokine production, and limited display of NK cell markers, compared with double-negative 24αβ NKT cells.
8070 22403296 Following the fate of one insulin-reactive CD4 T cell: conversion into Teffs and Tregs in the periphery controls diabetes in NOD mice.
8071 22403296 Insulin B chain 9-23 (B:9-23) autoreactive CD4 T cells are key for initiating autoimmune diabetes in NOD mice; however, little is known regarding their origin and function.
8072 22403296 Following the fate of one insulin-reactive CD4 T cell: conversion into Teffs and Tregs in the periphery controls diabetes in NOD mice.
8073 22403296 Insulin B chain 9-23 (B:9-23) autoreactive CD4 T cells are key for initiating autoimmune diabetes in NOD mice; however, little is known regarding their origin and function.
8074 22427377 Nonobese diabetic RIP-IL35 transgenic mice exhibited decreased islet infiltration with substantial reductions in the number of CD4(+) and CD8(+) T cells, and frequency of glucose-6-phosphatase catalytic subunit-related protein-specific CD8(+) T cells.
8075 22428018 The gluten-containing STD diet led to a significantly decreased proportion of γδ T cells in all lymphoid compartments studied, although an increase was detected in some γδ T cell subsets (CD8(+), CD103(+)).
8076 22428018 Further, it decreased the proportion of CD4(+)CD62L(+) T cells in Peyer's patches.
8077 22428018 Interestingly, no diet-induced changes were found among CD4(+)Foxp3(+) T cells or CD3(+)CD49b(+)cells (NKT cells) and CD3(-)CD49b(+) (NK) cells.
8078 22428018 Mice fed the STD diet showed increased proportions of CD4(+)CD45RB(high+) and CD103(+) T cells and a lower proportion of CD4(+)CD45RB(low+) T cells in both mucosal and non-mucosal compartments.
8079 22428018 The gluten-containing STD diet led to a significantly decreased proportion of γδ T cells in all lymphoid compartments studied, although an increase was detected in some γδ T cell subsets (CD8(+), CD103(+)).
8080 22428018 Further, it decreased the proportion of CD4(+)CD62L(+) T cells in Peyer's patches.
8081 22428018 Interestingly, no diet-induced changes were found among CD4(+)Foxp3(+) T cells or CD3(+)CD49b(+)cells (NKT cells) and CD3(-)CD49b(+) (NK) cells.
8082 22428018 Mice fed the STD diet showed increased proportions of CD4(+)CD45RB(high+) and CD103(+) T cells and a lower proportion of CD4(+)CD45RB(low+) T cells in both mucosal and non-mucosal compartments.
8083 22428018 The gluten-containing STD diet led to a significantly decreased proportion of γδ T cells in all lymphoid compartments studied, although an increase was detected in some γδ T cell subsets (CD8(+), CD103(+)).
8084 22428018 Further, it decreased the proportion of CD4(+)CD62L(+) T cells in Peyer's patches.
8085 22428018 Interestingly, no diet-induced changes were found among CD4(+)Foxp3(+) T cells or CD3(+)CD49b(+)cells (NKT cells) and CD3(-)CD49b(+) (NK) cells.
8086 22428018 Mice fed the STD diet showed increased proportions of CD4(+)CD45RB(high+) and CD103(+) T cells and a lower proportion of CD4(+)CD45RB(low+) T cells in both mucosal and non-mucosal compartments.
8087 22461703 Type 1 diabetes-associated IL2RA variation lowers IL-2 signaling and contributes to diminished CD4+CD25+ regulatory T cell function.
8088 22461703 Numerous reports have demonstrated that CD4(+)CD25(+) regulatory T cells (Tregs) from individuals with a range of human autoimmune diseases, including type 1 diabetes, are deficient in their ability to control autologous proinflammatory responses when compared with nondiseased, control individuals.
8089 22461703 We demonstrated that the presence of an autoimmune disease-associated IL2RA haplotype correlates with diminished IL-2 responsiveness in Ag-experienced CD4(+) T cells, as measured by phosphorylation of STAT5a, and is associated with lower levels of FOXP3 expression by Tregs and a reduction in their ability to suppress proliferation of autologous effector T cells.
8090 22461703 Type 1 diabetes-associated IL2RA variation lowers IL-2 signaling and contributes to diminished CD4+CD25+ regulatory T cell function.
8091 22461703 Numerous reports have demonstrated that CD4(+)CD25(+) regulatory T cells (Tregs) from individuals with a range of human autoimmune diseases, including type 1 diabetes, are deficient in their ability to control autologous proinflammatory responses when compared with nondiseased, control individuals.
8092 22461703 We demonstrated that the presence of an autoimmune disease-associated IL2RA haplotype correlates with diminished IL-2 responsiveness in Ag-experienced CD4(+) T cells, as measured by phosphorylation of STAT5a, and is associated with lower levels of FOXP3 expression by Tregs and a reduction in their ability to suppress proliferation of autologous effector T cells.
8093 22461703 Type 1 diabetes-associated IL2RA variation lowers IL-2 signaling and contributes to diminished CD4+CD25+ regulatory T cell function.
8094 22461703 Numerous reports have demonstrated that CD4(+)CD25(+) regulatory T cells (Tregs) from individuals with a range of human autoimmune diseases, including type 1 diabetes, are deficient in their ability to control autologous proinflammatory responses when compared with nondiseased, control individuals.
8095 22461703 We demonstrated that the presence of an autoimmune disease-associated IL2RA haplotype correlates with diminished IL-2 responsiveness in Ag-experienced CD4(+) T cells, as measured by phosphorylation of STAT5a, and is associated with lower levels of FOXP3 expression by Tregs and a reduction in their ability to suppress proliferation of autologous effector T cells.
8096 22488364 We have investigated the role of CD40 signaling in islet-reactive, diabetogenic CD4(+) Th1 T-cell clones.
8097 22488364 Using multispectral flow cytometry, we showed that CD40 and CD154 are co-expressed and form complexes on the surface of activated T cells.
8098 22488364 We also demonstrate that activated Tcells can transactivate CD4(+) CD40(+) T cells through the CD40-CD154 pathway.
8099 22488364 These data indicate that CD40 is an important signaling molecule on autoreactive CD4(+) T cells and contributes to their pathogenic effector function.
8100 22488364 We have investigated the role of CD40 signaling in islet-reactive, diabetogenic CD4(+) Th1 T-cell clones.
8101 22488364 Using multispectral flow cytometry, we showed that CD40 and CD154 are co-expressed and form complexes on the surface of activated T cells.
8102 22488364 We also demonstrate that activated Tcells can transactivate CD4(+) CD40(+) T cells through the CD40-CD154 pathway.
8103 22488364 These data indicate that CD40 is an important signaling molecule on autoreactive CD4(+) T cells and contributes to their pathogenic effector function.
8104 22488364 We have investigated the role of CD40 signaling in islet-reactive, diabetogenic CD4(+) Th1 T-cell clones.
8105 22488364 Using multispectral flow cytometry, we showed that CD40 and CD154 are co-expressed and form complexes on the surface of activated T cells.
8106 22488364 We also demonstrate that activated Tcells can transactivate CD4(+) CD40(+) T cells through the CD40-CD154 pathway.
8107 22488364 These data indicate that CD40 is an important signaling molecule on autoreactive CD4(+) T cells and contributes to their pathogenic effector function.
8108 22547652 We found that Dll4 pharmacological blockade induces accumulation of tDCs and CD4(+)CD25(+)FoxP3(+) regulatory T cells (T(reg) cells) in the thymic cortex.
8109 22547652 Anti-Dll4 treatment converts CD4(-)CD8(-)c-kit(+)CD44(+)CD25(-) (DN1) T cell progenitors to immature DCs that induce ex vivo differentiation of naive CD4(+) T cells into T(reg) cells.
8110 22547652 Induction of these tolerogenic DN1-derived tDCs and the ensuing expansion of T(reg) cells are Fms-like tyrosine kinase 3 (Flt3) independent, occur in the context of transcriptional up-regulation of PU.1, Irf-4, Irf-8, and CSF-1, genes critical for DC differentiation, and are abrogated in thymectomized mice.
8111 22547652 We found that Dll4 pharmacological blockade induces accumulation of tDCs and CD4(+)CD25(+)FoxP3(+) regulatory T cells (T(reg) cells) in the thymic cortex.
8112 22547652 Anti-Dll4 treatment converts CD4(-)CD8(-)c-kit(+)CD44(+)CD25(-) (DN1) T cell progenitors to immature DCs that induce ex vivo differentiation of naive CD4(+) T cells into T(reg) cells.
8113 22547652 Induction of these tolerogenic DN1-derived tDCs and the ensuing expansion of T(reg) cells are Fms-like tyrosine kinase 3 (Flt3) independent, occur in the context of transcriptional up-regulation of PU.1, Irf-4, Irf-8, and CSF-1, genes critical for DC differentiation, and are abrogated in thymectomized mice.
8114 22560862 Significantly higher Dectin-1 expression was also detected in CD4(+) T, CD8(+) T, B cells and NK cells from T2D patients compared to controls.
8115 22560862 In contrast, monocytes from T2D patients with poor glycemic control (HbA1c>8%) showed a diminished percentage of Dectin-1(+)/TLR2(+) cells.
8116 22560862 Negative correlations between the percent of Dectin-1(+)/TLR2(+) cells and fasting plasma glucose levels (FPG) and HbA1c levels were found.
8117 22579473 Interleukin-21 receptor-mediated signals control autoreactive T cell infiltration in pancreatic islets.
8118 22579473 It remains unclear how interleukin-21 receptor (IL-21R) contributes to type 1 diabetes.
8119 22579473 Here we have shown that dendritic cells (DCs) in the pancreas required IL-21R not for antigen uptake, but to acquire the chemokine receptor CCR7 and migrate into the draining lymph node.
8120 22579473 Consequently, less antigen, major histocompatibility complex (MHC) class II, and CD86 was provided to autoreactive effector cells in Il21r(-/-) mice, impairing CD4(+) T cell activation, CD40:CD40L interactions, and pancreatic infiltration by autoreactive T cells.
8121 22579473 CD40 crosslinking restored defective CD4(+) cell expansion and CD4 independently expanded autoreactive CD8(+) cells, but CD8(+) cells still required CD4(+) cells to reach the pancreas and induce diabetes.
8122 22579473 We conclude that IL-21R controls both antigen transport by DCs and the crucial beacon function of CD4(+) cells for autoreactive CD8(+) cells to reach the islets.
8123 22579473 Interleukin-21 receptor-mediated signals control autoreactive T cell infiltration in pancreatic islets.
8124 22579473 It remains unclear how interleukin-21 receptor (IL-21R) contributes to type 1 diabetes.
8125 22579473 Here we have shown that dendritic cells (DCs) in the pancreas required IL-21R not for antigen uptake, but to acquire the chemokine receptor CCR7 and migrate into the draining lymph node.
8126 22579473 Consequently, less antigen, major histocompatibility complex (MHC) class II, and CD86 was provided to autoreactive effector cells in Il21r(-/-) mice, impairing CD4(+) T cell activation, CD40:CD40L interactions, and pancreatic infiltration by autoreactive T cells.
8127 22579473 CD40 crosslinking restored defective CD4(+) cell expansion and CD4 independently expanded autoreactive CD8(+) cells, but CD8(+) cells still required CD4(+) cells to reach the pancreas and induce diabetes.
8128 22579473 We conclude that IL-21R controls both antigen transport by DCs and the crucial beacon function of CD4(+) cells for autoreactive CD8(+) cells to reach the islets.
8129 22579473 Interleukin-21 receptor-mediated signals control autoreactive T cell infiltration in pancreatic islets.
8130 22579473 It remains unclear how interleukin-21 receptor (IL-21R) contributes to type 1 diabetes.
8131 22579473 Here we have shown that dendritic cells (DCs) in the pancreas required IL-21R not for antigen uptake, but to acquire the chemokine receptor CCR7 and migrate into the draining lymph node.
8132 22579473 Consequently, less antigen, major histocompatibility complex (MHC) class II, and CD86 was provided to autoreactive effector cells in Il21r(-/-) mice, impairing CD4(+) T cell activation, CD40:CD40L interactions, and pancreatic infiltration by autoreactive T cells.
8133 22579473 CD40 crosslinking restored defective CD4(+) cell expansion and CD4 independently expanded autoreactive CD8(+) cells, but CD8(+) cells still required CD4(+) cells to reach the pancreas and induce diabetes.
8134 22579473 We conclude that IL-21R controls both antigen transport by DCs and the crucial beacon function of CD4(+) cells for autoreactive CD8(+) cells to reach the islets.
8135 22596049 Adoptive transfer of naive CD4(+) T cells in Rag1(-/-) mice led to a predominant Th1 response in adipose tissue.
8136 22596049 In contrast, during obesity DCs (human CD11c(+)CD1c(+) and mouse CD11c(high)F4/80(low)) accumulated in adipose tissue.
8137 22596049 In patients, the presence of CD11c(+)CD1c(+) DCs correlated with the BMI and with an elevation in Th17 cells.
8138 22596049 CD1c gene expression further correlated with homeostatic model assessment-insulin resistance in the subcutaneous adipose tissue of obese patients.
8139 22649557 Interestingly, the latter delay or protection from T1D is associated with the enhanced secretion of IL-10 rather than IFN-g by C24:0-treated CD4(+) T cells and the deviation of the islet-reactive diabetogenic T cell response.
8140 22661285 From an immunological standpoint, AG490 induced the expression of Foxp3 in CD4(+)CD25(-) T-cells and down-regulated expression of co-stimulatory molecules in dendritic cells (DC) both in vitro and in vivo.
8141 22661285 AG490 treated CD4+CD25- T-cells and DC in vitro, acquired regulatory functions; namely, the ability to suppress proliferation of a responding cell population in vitro.
8142 22661285 From an immunological standpoint, AG490 induced the expression of Foxp3 in CD4(+)CD25(-) T-cells and down-regulated expression of co-stimulatory molecules in dendritic cells (DC) both in vitro and in vivo.
8143 22661285 AG490 treated CD4+CD25- T-cells and DC in vitro, acquired regulatory functions; namely, the ability to suppress proliferation of a responding cell population in vitro.
8144 22684085 Flow cytometric analysis of Tregs was performed using the following markers: CD4, CD25, CD127, FoxP3, IL-10, and TGF-β.
8145 22684085 There was lower frequency of CD4(+)CD25(high)CD127(low)FoxP3(+) Tregs in T1D children <5 years than ≥5 years of age (0.87 vs. 1.56 %, respectively, p = 0.017).
8146 22684085 Diabetic children <5 years had lower CD4(+)CD25(high)CD127(low)FoxP3(+), CD4(+)CD25(high)IL-10, and CD4(+)CD25(high)TGF-β Tregs compared to age-matched controls.
8147 22684085 Flow cytometric analysis of Tregs was performed using the following markers: CD4, CD25, CD127, FoxP3, IL-10, and TGF-β.
8148 22684085 There was lower frequency of CD4(+)CD25(high)CD127(low)FoxP3(+) Tregs in T1D children <5 years than ≥5 years of age (0.87 vs. 1.56 %, respectively, p = 0.017).
8149 22684085 Diabetic children <5 years had lower CD4(+)CD25(high)CD127(low)FoxP3(+), CD4(+)CD25(high)IL-10, and CD4(+)CD25(high)TGF-β Tregs compared to age-matched controls.
8150 22684085 Flow cytometric analysis of Tregs was performed using the following markers: CD4, CD25, CD127, FoxP3, IL-10, and TGF-β.
8151 22684085 There was lower frequency of CD4(+)CD25(high)CD127(low)FoxP3(+) Tregs in T1D children <5 years than ≥5 years of age (0.87 vs. 1.56 %, respectively, p = 0.017).
8152 22684085 Diabetic children <5 years had lower CD4(+)CD25(high)CD127(low)FoxP3(+), CD4(+)CD25(high)IL-10, and CD4(+)CD25(high)TGF-β Tregs compared to age-matched controls.
8153 22688334 ADMSC treatment reversed the hyperglycemia of early-onset diabetes in 78% of diabetic NOD mice, and this effect was associated with higher serum insulin, amylin, and glucagon-like peptide 1 levels compared with untreated controls.
8154 22688334 This improved outcome was associated with downregulation of the CD4(+) Th1-biased immune response and expansion of regulatory T cells (Tregs) in the pancreatic lymph nodes.
8155 22688334 Within the pancreas, inflammatory cell infiltration and interferon-γ levels were reduced, while insulin, pancreatic duodenal homeobox-1, and active transforming growth factor-β1 expression were increased.
8156 22693523 In type 1 diabetes (T1D), CD8+ cytotoxic T lymphocytes, in conjunction with CD4+ T helper cells, destroy the insulin-producing β cells within the pancreatic islets of Langerhans.
8157 22723880 We also observed sensitization of the Th1 differentiation machinery through co-localization of IL-2Rα, IL-4Rα, and IL-12Rβ2 subunits with GM1 positive lipid rafts, and increased STAT-4 and STAT-5 phosphorylation following membrane cholesterol enrichment.
8158 22723880 Antigen stimulation or CD3/CD28 polyclonal stimulation of membrane cholesterol-enriched, resting CD4 T-cells followed a path of Th1 differentiation, which was more vigorous in the presence of increased IL-12 secretion by APCs enriched in membrane cholesterol.
8159 22723880 However, membrane cholesterol enrichment in CD4(+)Foxp3(+) T-reg cells did not alter their suppressogenic function.
8160 22723880 We also observed sensitization of the Th1 differentiation machinery through co-localization of IL-2Rα, IL-4Rα, and IL-12Rβ2 subunits with GM1 positive lipid rafts, and increased STAT-4 and STAT-5 phosphorylation following membrane cholesterol enrichment.
8161 22723880 Antigen stimulation or CD3/CD28 polyclonal stimulation of membrane cholesterol-enriched, resting CD4 T-cells followed a path of Th1 differentiation, which was more vigorous in the presence of increased IL-12 secretion by APCs enriched in membrane cholesterol.
8162 22723880 However, membrane cholesterol enrichment in CD4(+)Foxp3(+) T-reg cells did not alter their suppressogenic function.
8163 22728763 Targeting Janus tyrosine kinase 3 (JAK3) with an inhibitor induces secretion of TGF-β by CD4+ T cells.
8164 22728763 Here, we show that the JAK3 inhibitor 4-(4'-hydroxyphenyl)-amino-6,7-dimethoxyquinazoline (WHI-P131) suppresses proliferation of short-term cultured NOD CD4(+) T cells through induction of apoptosis, while promoting survival of a particular population of long-term cultured cells.
8165 22728763 It was found that the surviving cells were not of the CD4(+)CD25(+)FoxP3(+) phenotype.
8166 22728763 They secreted decreased amounts of IL-10, IL-4 and interferon (IFN)-γ compared to the cells not exposed to the optimal concentrations of JAK3 inhibitor.
8167 22728763 In vivo treatment of prediabetic NOD mice with WHI-P131 did not affect the frequency and number of splenic and pancreatic lymph node CD4(+)FoxP3(+) Tregs, while generating an elevated numbers of CD4(+)FoxP3(-) TGF-β-secreting T cells.
8168 22728763 In conclusion, our data suggest an induction of TGF-β-secreting CD4(+) T cells as the underlying mechanism for antidiabetogenic effects obtained by the treatment with a JAK3 inhibitor.
8169 22728763 Targeting Janus tyrosine kinase 3 (JAK3) with an inhibitor induces secretion of TGF-β by CD4+ T cells.
8170 22728763 Here, we show that the JAK3 inhibitor 4-(4'-hydroxyphenyl)-amino-6,7-dimethoxyquinazoline (WHI-P131) suppresses proliferation of short-term cultured NOD CD4(+) T cells through induction of apoptosis, while promoting survival of a particular population of long-term cultured cells.
8171 22728763 It was found that the surviving cells were not of the CD4(+)CD25(+)FoxP3(+) phenotype.
8172 22728763 They secreted decreased amounts of IL-10, IL-4 and interferon (IFN)-γ compared to the cells not exposed to the optimal concentrations of JAK3 inhibitor.
8173 22728763 In vivo treatment of prediabetic NOD mice with WHI-P131 did not affect the frequency and number of splenic and pancreatic lymph node CD4(+)FoxP3(+) Tregs, while generating an elevated numbers of CD4(+)FoxP3(-) TGF-β-secreting T cells.
8174 22728763 In conclusion, our data suggest an induction of TGF-β-secreting CD4(+) T cells as the underlying mechanism for antidiabetogenic effects obtained by the treatment with a JAK3 inhibitor.
8175 22728763 Targeting Janus tyrosine kinase 3 (JAK3) with an inhibitor induces secretion of TGF-β by CD4+ T cells.
8176 22728763 Here, we show that the JAK3 inhibitor 4-(4'-hydroxyphenyl)-amino-6,7-dimethoxyquinazoline (WHI-P131) suppresses proliferation of short-term cultured NOD CD4(+) T cells through induction of apoptosis, while promoting survival of a particular population of long-term cultured cells.
8177 22728763 It was found that the surviving cells were not of the CD4(+)CD25(+)FoxP3(+) phenotype.
8178 22728763 They secreted decreased amounts of IL-10, IL-4 and interferon (IFN)-γ compared to the cells not exposed to the optimal concentrations of JAK3 inhibitor.
8179 22728763 In vivo treatment of prediabetic NOD mice with WHI-P131 did not affect the frequency and number of splenic and pancreatic lymph node CD4(+)FoxP3(+) Tregs, while generating an elevated numbers of CD4(+)FoxP3(-) TGF-β-secreting T cells.
8180 22728763 In conclusion, our data suggest an induction of TGF-β-secreting CD4(+) T cells as the underlying mechanism for antidiabetogenic effects obtained by the treatment with a JAK3 inhibitor.
8181 22728763 Targeting Janus tyrosine kinase 3 (JAK3) with an inhibitor induces secretion of TGF-β by CD4+ T cells.
8182 22728763 Here, we show that the JAK3 inhibitor 4-(4'-hydroxyphenyl)-amino-6,7-dimethoxyquinazoline (WHI-P131) suppresses proliferation of short-term cultured NOD CD4(+) T cells through induction of apoptosis, while promoting survival of a particular population of long-term cultured cells.
8183 22728763 It was found that the surviving cells were not of the CD4(+)CD25(+)FoxP3(+) phenotype.
8184 22728763 They secreted decreased amounts of IL-10, IL-4 and interferon (IFN)-γ compared to the cells not exposed to the optimal concentrations of JAK3 inhibitor.
8185 22728763 In vivo treatment of prediabetic NOD mice with WHI-P131 did not affect the frequency and number of splenic and pancreatic lymph node CD4(+)FoxP3(+) Tregs, while generating an elevated numbers of CD4(+)FoxP3(-) TGF-β-secreting T cells.
8186 22728763 In conclusion, our data suggest an induction of TGF-β-secreting CD4(+) T cells as the underlying mechanism for antidiabetogenic effects obtained by the treatment with a JAK3 inhibitor.
8187 22728763 Targeting Janus tyrosine kinase 3 (JAK3) with an inhibitor induces secretion of TGF-β by CD4+ T cells.
8188 22728763 Here, we show that the JAK3 inhibitor 4-(4'-hydroxyphenyl)-amino-6,7-dimethoxyquinazoline (WHI-P131) suppresses proliferation of short-term cultured NOD CD4(+) T cells through induction of apoptosis, while promoting survival of a particular population of long-term cultured cells.
8189 22728763 It was found that the surviving cells were not of the CD4(+)CD25(+)FoxP3(+) phenotype.
8190 22728763 They secreted decreased amounts of IL-10, IL-4 and interferon (IFN)-γ compared to the cells not exposed to the optimal concentrations of JAK3 inhibitor.
8191 22728763 In vivo treatment of prediabetic NOD mice with WHI-P131 did not affect the frequency and number of splenic and pancreatic lymph node CD4(+)FoxP3(+) Tregs, while generating an elevated numbers of CD4(+)FoxP3(-) TGF-β-secreting T cells.
8192 22728763 In conclusion, our data suggest an induction of TGF-β-secreting CD4(+) T cells as the underlying mechanism for antidiabetogenic effects obtained by the treatment with a JAK3 inhibitor.
8193 22730534 This is accompanied by an increased IFN-γ production of autoreactive splenic cells and a decreased presence of regulatory CD4(+)CD25(+)Foxp3(+) T cells.
8194 22730534 In contrast, transfer of CD4(+)CD25(+)Foxp3(+) T cells could correct the defect after denileukin diftitox treatment.
8195 22730534 This is accompanied by an increased IFN-γ production of autoreactive splenic cells and a decreased presence of regulatory CD4(+)CD25(+)Foxp3(+) T cells.
8196 22730534 In contrast, transfer of CD4(+)CD25(+)Foxp3(+) T cells could correct the defect after denileukin diftitox treatment.
8197 22733483 On the other hand, a differential role for CD4(+) Th1 and CD4(+) Th2 cells has been suggested.
8198 22733769 IL-7 increases, whereas IL-7Rα antibody therapy reduces, the IFN-γ-producing CD4(+) (T(H)1) and IFN-γ-producing CD8(+) T cells.
8199 22733769 Conversely, IL-7 decreases and IL-7Rα antibody enhances the inhibitory receptor Programmed Death 1 (PD-1) expression in the effector T cells.
8200 22789848 Over-expression of Stat5b confers protection against diabetes in the non-obese diabetic (NOD) mice via up-regulation of CD4(+)CD25(+) regulatory T cells.
8201 22789848 The total cell numbers of CD4(+) T cells and especially CD8(+) T cells in the spleen and pancreatic lymph node were increased in the Stat5b transgenic NOD mice.
8202 22789848 Consistent with these findings, CD4(+) and CD8(+) T cells from the Stat5b transgenic NOD mice showed a higher proliferation capacity and up-regulation of multiple cytokines including IL-2, IFN-γ, TNF-α and IL-10 as well as anti-apoptotic gene Bcl-xl.
8203 22789848 Furthermore, the number and proportion of CD4(+)CD25(+) regulatory T cells were significantly increased in transgenic mice although in vitro suppression ability of the regulatory T-cells was not affected by the transgene.
8204 22789848 Our results suggest that Stat5b confers protection against diabetes in the NOD mice by regulating the numbers and function of multiple immune cell types, especially by up-regulating CD4(+)CD25(+) regulatory T cells.
8205 22789848 Over-expression of Stat5b confers protection against diabetes in the non-obese diabetic (NOD) mice via up-regulation of CD4(+)CD25(+) regulatory T cells.
8206 22789848 The total cell numbers of CD4(+) T cells and especially CD8(+) T cells in the spleen and pancreatic lymph node were increased in the Stat5b transgenic NOD mice.
8207 22789848 Consistent with these findings, CD4(+) and CD8(+) T cells from the Stat5b transgenic NOD mice showed a higher proliferation capacity and up-regulation of multiple cytokines including IL-2, IFN-γ, TNF-α and IL-10 as well as anti-apoptotic gene Bcl-xl.
8208 22789848 Furthermore, the number and proportion of CD4(+)CD25(+) regulatory T cells were significantly increased in transgenic mice although in vitro suppression ability of the regulatory T-cells was not affected by the transgene.
8209 22789848 Our results suggest that Stat5b confers protection against diabetes in the NOD mice by regulating the numbers and function of multiple immune cell types, especially by up-regulating CD4(+)CD25(+) regulatory T cells.
8210 22789848 Over-expression of Stat5b confers protection against diabetes in the non-obese diabetic (NOD) mice via up-regulation of CD4(+)CD25(+) regulatory T cells.
8211 22789848 The total cell numbers of CD4(+) T cells and especially CD8(+) T cells in the spleen and pancreatic lymph node were increased in the Stat5b transgenic NOD mice.
8212 22789848 Consistent with these findings, CD4(+) and CD8(+) T cells from the Stat5b transgenic NOD mice showed a higher proliferation capacity and up-regulation of multiple cytokines including IL-2, IFN-γ, TNF-α and IL-10 as well as anti-apoptotic gene Bcl-xl.
8213 22789848 Furthermore, the number and proportion of CD4(+)CD25(+) regulatory T cells were significantly increased in transgenic mice although in vitro suppression ability of the regulatory T-cells was not affected by the transgene.
8214 22789848 Our results suggest that Stat5b confers protection against diabetes in the NOD mice by regulating the numbers and function of multiple immune cell types, especially by up-regulating CD4(+)CD25(+) regulatory T cells.
8215 22789848 Over-expression of Stat5b confers protection against diabetes in the non-obese diabetic (NOD) mice via up-regulation of CD4(+)CD25(+) regulatory T cells.
8216 22789848 The total cell numbers of CD4(+) T cells and especially CD8(+) T cells in the spleen and pancreatic lymph node were increased in the Stat5b transgenic NOD mice.
8217 22789848 Consistent with these findings, CD4(+) and CD8(+) T cells from the Stat5b transgenic NOD mice showed a higher proliferation capacity and up-regulation of multiple cytokines including IL-2, IFN-γ, TNF-α and IL-10 as well as anti-apoptotic gene Bcl-xl.
8218 22789848 Furthermore, the number and proportion of CD4(+)CD25(+) regulatory T cells were significantly increased in transgenic mice although in vitro suppression ability of the regulatory T-cells was not affected by the transgene.
8219 22789848 Our results suggest that Stat5b confers protection against diabetes in the NOD mice by regulating the numbers and function of multiple immune cell types, especially by up-regulating CD4(+)CD25(+) regulatory T cells.
8220 22789848 Over-expression of Stat5b confers protection against diabetes in the non-obese diabetic (NOD) mice via up-regulation of CD4(+)CD25(+) regulatory T cells.
8221 22789848 The total cell numbers of CD4(+) T cells and especially CD8(+) T cells in the spleen and pancreatic lymph node were increased in the Stat5b transgenic NOD mice.
8222 22789848 Consistent with these findings, CD4(+) and CD8(+) T cells from the Stat5b transgenic NOD mice showed a higher proliferation capacity and up-regulation of multiple cytokines including IL-2, IFN-γ, TNF-α and IL-10 as well as anti-apoptotic gene Bcl-xl.
8223 22789848 Furthermore, the number and proportion of CD4(+)CD25(+) regulatory T cells were significantly increased in transgenic mice although in vitro suppression ability of the regulatory T-cells was not affected by the transgene.
8224 22789848 Our results suggest that Stat5b confers protection against diabetes in the NOD mice by regulating the numbers and function of multiple immune cell types, especially by up-regulating CD4(+)CD25(+) regulatory T cells.
8225 22794701 Type IV has four major categories: type IVa is CD4(+)Th1 lymphocyte mediated with activation of macrophages (granuloma formation and type I diabetes mellitus); type IVb is CD4(+)Th2 lymphocyte mediated with eosinophilic involvement (persistent asthma and allergic rhinitis); type IVc is cytotoxic CD8(+) T lymphocyte with involvement of perforin-granzme B in apoptosis (Stevens-Johnson syndrome and toxic epidermal necrolysis); type IVd is T-lymphocyte-driven neutrophilic inflammation (pustular psoriasis and acute generalized exanthematous pustulosis).
8226 22851544 Cytokine therapy with interleukin-2/anti-interleukin-2 monoclonal antibody complexes expands CD4+CD25+Foxp3+ regulatory T cells and attenuates development and progression of atherosclerosis.
8227 22864396 Combination therapy with Rosiglitazone and Gemcitabine modulated T cell populations by enhancing circulating CD8(+) T cells and intra-tumoral CD4(+) and CD8(+) T cells while limiting T regulatory cells.
8228 22865049 IFN-γ receptor deficiency prevents diabetes induction by diabetogenic CD4+, but not CD8+, T cells.
8229 22865049 In the current study, an adoptive transfer model was employed to define the contribution of IFN-γ in CD4(+) versus CD8(+) T cell-mediated β-cell autoimmunity.
8230 22865049 On the other hand, CD4(+) T cells indirectly promoted β-cell destruction by providing help to CD8(+) T cells in NOD.scid.IFNγRB(null) recipients.
8231 22865049 IFN-γ receptor deficiency prevents diabetes induction by diabetogenic CD4+, but not CD8+, T cells.
8232 22865049 In the current study, an adoptive transfer model was employed to define the contribution of IFN-γ in CD4(+) versus CD8(+) T cell-mediated β-cell autoimmunity.
8233 22865049 On the other hand, CD4(+) T cells indirectly promoted β-cell destruction by providing help to CD8(+) T cells in NOD.scid.IFNγRB(null) recipients.
8234 22865049 IFN-γ receptor deficiency prevents diabetes induction by diabetogenic CD4+, but not CD8+, T cells.
8235 22865049 In the current study, an adoptive transfer model was employed to define the contribution of IFN-γ in CD4(+) versus CD8(+) T cell-mediated β-cell autoimmunity.
8236 22865049 On the other hand, CD4(+) T cells indirectly promoted β-cell destruction by providing help to CD8(+) T cells in NOD.scid.IFNγRB(null) recipients.
8237 22903683 Twenty-five consecutive middle-aged (<55 years) out-patients with CHD (acute myocardial infarction in the previous 3 months) and stable clinical conditions (>1 month) underwent venous blood sampling in order to determinate CD3+ (T-lymphocytes), CD19+ (B-lymphocytes), CD4+ (helper/inducer lymphocytes) and CD8+ (suppressor/cytotoxic lymphocytes) populations.
8238 22903683 CHD patients showed lower CD3+ levels (70.96 ± 4.72 vs. 74.12 ± 4.93 %, p < 0.05) and CD8+ (37.80 ± 7.15 vs. 46.36 ± 5.22 %, p < 0.001) but higher CD4+ (37.32 ± 7.99 vs. 31.64 ± 4.72 %, p < 0.01) and CD4+/CD8+ ratio (1.06 ± 0.43 vs. 0.69 ± 0.13, p < 0.001).
8239 22903683 Subjects with an impaired (≤55 %) left ventricular ejection fraction were characterized by lower levels of CD8+ (33.23 ± 7.04 vs. 43.76 ± 7.40 %, p < 0.05) and higher levels of CD4+ (38.31 ± 8.23 vs. 32.73 ± 6.08 %, p < 0.05) and CD4+/CD8+ ratio (1.06 ± 0.38 vs. 0.79 ± 0.34, p < 0.05).
8240 22903683 In conclusion, subjects with early clinical presentation of CHD are characterized by an altered CD4+/CD8+ ratio and lower CD3+ levels.
8241 22903683 Twenty-five consecutive middle-aged (<55 years) out-patients with CHD (acute myocardial infarction in the previous 3 months) and stable clinical conditions (>1 month) underwent venous blood sampling in order to determinate CD3+ (T-lymphocytes), CD19+ (B-lymphocytes), CD4+ (helper/inducer lymphocytes) and CD8+ (suppressor/cytotoxic lymphocytes) populations.
8242 22903683 CHD patients showed lower CD3+ levels (70.96 ± 4.72 vs. 74.12 ± 4.93 %, p < 0.05) and CD8+ (37.80 ± 7.15 vs. 46.36 ± 5.22 %, p < 0.001) but higher CD4+ (37.32 ± 7.99 vs. 31.64 ± 4.72 %, p < 0.01) and CD4+/CD8+ ratio (1.06 ± 0.43 vs. 0.69 ± 0.13, p < 0.001).
8243 22903683 Subjects with an impaired (≤55 %) left ventricular ejection fraction were characterized by lower levels of CD8+ (33.23 ± 7.04 vs. 43.76 ± 7.40 %, p < 0.05) and higher levels of CD4+ (38.31 ± 8.23 vs. 32.73 ± 6.08 %, p < 0.05) and CD4+/CD8+ ratio (1.06 ± 0.38 vs. 0.79 ± 0.34, p < 0.05).
8244 22903683 In conclusion, subjects with early clinical presentation of CHD are characterized by an altered CD4+/CD8+ ratio and lower CD3+ levels.
8245 22903683 Twenty-five consecutive middle-aged (<55 years) out-patients with CHD (acute myocardial infarction in the previous 3 months) and stable clinical conditions (>1 month) underwent venous blood sampling in order to determinate CD3+ (T-lymphocytes), CD19+ (B-lymphocytes), CD4+ (helper/inducer lymphocytes) and CD8+ (suppressor/cytotoxic lymphocytes) populations.
8246 22903683 CHD patients showed lower CD3+ levels (70.96 ± 4.72 vs. 74.12 ± 4.93 %, p < 0.05) and CD8+ (37.80 ± 7.15 vs. 46.36 ± 5.22 %, p < 0.001) but higher CD4+ (37.32 ± 7.99 vs. 31.64 ± 4.72 %, p < 0.01) and CD4+/CD8+ ratio (1.06 ± 0.43 vs. 0.69 ± 0.13, p < 0.001).
8247 22903683 Subjects with an impaired (≤55 %) left ventricular ejection fraction were characterized by lower levels of CD8+ (33.23 ± 7.04 vs. 43.76 ± 7.40 %, p < 0.05) and higher levels of CD4+ (38.31 ± 8.23 vs. 32.73 ± 6.08 %, p < 0.05) and CD4+/CD8+ ratio (1.06 ± 0.38 vs. 0.79 ± 0.34, p < 0.05).
8248 22903683 In conclusion, subjects with early clinical presentation of CHD are characterized by an altered CD4+/CD8+ ratio and lower CD3+ levels.
8249 22903683 Twenty-five consecutive middle-aged (<55 years) out-patients with CHD (acute myocardial infarction in the previous 3 months) and stable clinical conditions (>1 month) underwent venous blood sampling in order to determinate CD3+ (T-lymphocytes), CD19+ (B-lymphocytes), CD4+ (helper/inducer lymphocytes) and CD8+ (suppressor/cytotoxic lymphocytes) populations.
8250 22903683 CHD patients showed lower CD3+ levels (70.96 ± 4.72 vs. 74.12 ± 4.93 %, p < 0.05) and CD8+ (37.80 ± 7.15 vs. 46.36 ± 5.22 %, p < 0.001) but higher CD4+ (37.32 ± 7.99 vs. 31.64 ± 4.72 %, p < 0.01) and CD4+/CD8+ ratio (1.06 ± 0.43 vs. 0.69 ± 0.13, p < 0.001).
8251 22903683 Subjects with an impaired (≤55 %) left ventricular ejection fraction were characterized by lower levels of CD8+ (33.23 ± 7.04 vs. 43.76 ± 7.40 %, p < 0.05) and higher levels of CD4+ (38.31 ± 8.23 vs. 32.73 ± 6.08 %, p < 0.05) and CD4+/CD8+ ratio (1.06 ± 0.38 vs. 0.79 ± 0.34, p < 0.05).
8252 22903683 In conclusion, subjects with early clinical presentation of CHD are characterized by an altered CD4+/CD8+ ratio and lower CD3+ levels.
8253 22912420 Chromogranin A (ChgA) has been identified as the antigen target for three NOD-derived, diabetogenic CD4 T-cell clones, including the well-known BDC-2.5.
8254 22912420 The WE14 responses of three NOD-derived CD4 T-cell clones, each with different T-cell receptors (TCRs), and of T cells from BDC-2.5 TCR transgenic mice are increased after TGase conversion of the peptide.
8255 22912420 Primary CD4 T cells isolated from NOD mice also respond to high concentrations of WE14 and significantly lower concentrations of TGase-treated WE14.
8256 22912420 Chromogranin A (ChgA) has been identified as the antigen target for three NOD-derived, diabetogenic CD4 T-cell clones, including the well-known BDC-2.5.
8257 22912420 The WE14 responses of three NOD-derived CD4 T-cell clones, each with different T-cell receptors (TCRs), and of T cells from BDC-2.5 TCR transgenic mice are increased after TGase conversion of the peptide.
8258 22912420 Primary CD4 T cells isolated from NOD mice also respond to high concentrations of WE14 and significantly lower concentrations of TGase-treated WE14.
8259 22912420 Chromogranin A (ChgA) has been identified as the antigen target for three NOD-derived, diabetogenic CD4 T-cell clones, including the well-known BDC-2.5.
8260 22912420 The WE14 responses of three NOD-derived CD4 T-cell clones, each with different T-cell receptors (TCRs), and of T cells from BDC-2.5 TCR transgenic mice are increased after TGase conversion of the peptide.
8261 22912420 Primary CD4 T cells isolated from NOD mice also respond to high concentrations of WE14 and significantly lower concentrations of TGase-treated WE14.
8262 22966003 Foxp3(+) CD4(+) T helper cells called regulatory T (T reg) cells play a key role in controlling reactivity to self-antigens and onset of autoimmunity.
8263 22983906 G6PC2, also known as islet-specific glucose 6-phosphatase catalytic subunit-related protein (IGRP), is a major target of autoreactive CD8(+) T cells in both diabetic human subjects and the non-obese diabetic (NOD) mouse.
8264 22983906 However, in contrast to the abundant literature regarding the CD8(+) response to this antigen, much less is known about the potential involvement of IGRP-reactive CD4(+) T cells in diabetogenesis.
8265 22983906 To address this issue, we immunized NOD mice with membranes from insect cells overexpressing full-length recombinant mouse IGRP and measured recall responses of purified CD4(+) T cells using a library of overlapping peptides encompassing the entire 355-aa primary sequence.
8266 22983906 G6PC2, also known as islet-specific glucose 6-phosphatase catalytic subunit-related protein (IGRP), is a major target of autoreactive CD8(+) T cells in both diabetic human subjects and the non-obese diabetic (NOD) mouse.
8267 22983906 However, in contrast to the abundant literature regarding the CD8(+) response to this antigen, much less is known about the potential involvement of IGRP-reactive CD4(+) T cells in diabetogenesis.
8268 22983906 To address this issue, we immunized NOD mice with membranes from insect cells overexpressing full-length recombinant mouse IGRP and measured recall responses of purified CD4(+) T cells using a library of overlapping peptides encompassing the entire 355-aa primary sequence.
8269 22984077 We used ONX 0914-treated wild-type CD4(+) T cells and also LMP7(-/-) CD4(+) T cells under different Th cell-polarizing conditions, focusing on the effector cytokines and transcription factors involved, and compared them with wild-type CD4(+) T cells.
8270 23027613 While ODNR01 shows no effect on diabetes in lymphocyte-free Rag1-deficient DIO mice, it enhances glucose tolerance and insulin sensitivity in CD4(+) T-cell-reconstituted Rag1-deficient DIO mice, suggesting its beneficial effect on insulin resistance is T-cell-dependent.
8271 23065740 This protection is peptide-restricted, independent of IL-10 secretion by DCs and of CD4(+) T cells.
8272 23142275 Cyclophosphamide (CY) in the dose of 175 mg/kg b.w. eliminated CD4+Foxp3+ regulatory T cells (Tregs) and enhanced disease severity in C57/BL6 mice, but it did not overcome resistance to diabetes in BALB/c mice and did not affect diabetes progression in ST2 knock-out (ST2KO) mice.
8273 23142275 This treatment eliminated Tregs in pancreatic lymph nodes in ST2KO mice, while markedly increasing the influx of CD8+, CD4+TNF-α+, and CD4+IFN-γ+ effector T cells (Teffs) in pancreata.
8274 23142275 Taken together, our data suggest that the prevailing Th2 immune response in BALB/c mice may be responsible for the resistance to MLD-STZ diabetes and that ST2 gene deletion reveals the role of highly cyclophosphamide sensitive CD4+Foxp3+ regulatory T cells in the pancreatic lymph nodes in diabetes modulation.
8275 23142275 Cyclophosphamide (CY) in the dose of 175 mg/kg b.w. eliminated CD4+Foxp3+ regulatory T cells (Tregs) and enhanced disease severity in C57/BL6 mice, but it did not overcome resistance to diabetes in BALB/c mice and did not affect diabetes progression in ST2 knock-out (ST2KO) mice.
8276 23142275 This treatment eliminated Tregs in pancreatic lymph nodes in ST2KO mice, while markedly increasing the influx of CD8+, CD4+TNF-α+, and CD4+IFN-γ+ effector T cells (Teffs) in pancreata.
8277 23142275 Taken together, our data suggest that the prevailing Th2 immune response in BALB/c mice may be responsible for the resistance to MLD-STZ diabetes and that ST2 gene deletion reveals the role of highly cyclophosphamide sensitive CD4+Foxp3+ regulatory T cells in the pancreatic lymph nodes in diabetes modulation.
8278 23142275 Cyclophosphamide (CY) in the dose of 175 mg/kg b.w. eliminated CD4+Foxp3+ regulatory T cells (Tregs) and enhanced disease severity in C57/BL6 mice, but it did not overcome resistance to diabetes in BALB/c mice and did not affect diabetes progression in ST2 knock-out (ST2KO) mice.
8279 23142275 This treatment eliminated Tregs in pancreatic lymph nodes in ST2KO mice, while markedly increasing the influx of CD8+, CD4+TNF-α+, and CD4+IFN-γ+ effector T cells (Teffs) in pancreata.
8280 23142275 Taken together, our data suggest that the prevailing Th2 immune response in BALB/c mice may be responsible for the resistance to MLD-STZ diabetes and that ST2 gene deletion reveals the role of highly cyclophosphamide sensitive CD4+Foxp3+ regulatory T cells in the pancreatic lymph nodes in diabetes modulation.
8281 23180662 IL-2 promotes the function of memory-like autoregulatory CD8+ T cells but suppresses their development via FoxP3+ Treg cells.
8282 23180662 IL-2 plays a critical role in both effector T-cell development and FoxP3(+) CD4(+) Treg-cell homeostasis.
8283 23180662 A reduction in Il2 transcription results in impaired FoxP3(+) CD4(+) Treg-cell recruitment and function, and accounts for the association between murine Il2 and type 1 diabetes (T1D).
8284 23180662 The progression of T1D elicits a disease-countering negative feedback regulatory loop that involves the differentiation of low-avidity autoreactive CD8(+) T cells into memory-like autoregulatory T cells in a CD4(+) Th-dependent manner.
8285 23180662 We show that decreased IL-2 production impairs the regulatory capacity of memory-like autoregulatory CD8(+) CD122(+) T cells.
8286 23180662 Surprisingly, we also find that a reduction in IL-2 production capacity increases memory autoregulatory CD8(+) T-cell formation indirectly, by decreasing the development and function of FoxP3(+) Treg cells in nonobese diabetic mice.
8287 23180662 These results illustrate a complex homeostatic interplay between IL-2, CD4(+) Th cells, FoxP3(+) CD4(+) Treg cells and autoregulatory CD8(+) T-cell memory whereby IL-2 controls the function of both Treg-cell subsets, but IL-2-potentiation of FoxP3(+) CD4(+) Treg-cell function results in the suppression of CD4(+) Th-cell activation and autoregulatory memory CD8(+) T-cell formation.
8288 23180662 IL-2 promotes the function of memory-like autoregulatory CD8+ T cells but suppresses their development via FoxP3+ Treg cells.
8289 23180662 IL-2 plays a critical role in both effector T-cell development and FoxP3(+) CD4(+) Treg-cell homeostasis.
8290 23180662 A reduction in Il2 transcription results in impaired FoxP3(+) CD4(+) Treg-cell recruitment and function, and accounts for the association between murine Il2 and type 1 diabetes (T1D).
8291 23180662 The progression of T1D elicits a disease-countering negative feedback regulatory loop that involves the differentiation of low-avidity autoreactive CD8(+) T cells into memory-like autoregulatory T cells in a CD4(+) Th-dependent manner.
8292 23180662 We show that decreased IL-2 production impairs the regulatory capacity of memory-like autoregulatory CD8(+) CD122(+) T cells.
8293 23180662 Surprisingly, we also find that a reduction in IL-2 production capacity increases memory autoregulatory CD8(+) T-cell formation indirectly, by decreasing the development and function of FoxP3(+) Treg cells in nonobese diabetic mice.
8294 23180662 These results illustrate a complex homeostatic interplay between IL-2, CD4(+) Th cells, FoxP3(+) CD4(+) Treg cells and autoregulatory CD8(+) T-cell memory whereby IL-2 controls the function of both Treg-cell subsets, but IL-2-potentiation of FoxP3(+) CD4(+) Treg-cell function results in the suppression of CD4(+) Th-cell activation and autoregulatory memory CD8(+) T-cell formation.
8295 23180662 IL-2 promotes the function of memory-like autoregulatory CD8+ T cells but suppresses their development via FoxP3+ Treg cells.
8296 23180662 IL-2 plays a critical role in both effector T-cell development and FoxP3(+) CD4(+) Treg-cell homeostasis.
8297 23180662 A reduction in Il2 transcription results in impaired FoxP3(+) CD4(+) Treg-cell recruitment and function, and accounts for the association between murine Il2 and type 1 diabetes (T1D).
8298 23180662 The progression of T1D elicits a disease-countering negative feedback regulatory loop that involves the differentiation of low-avidity autoreactive CD8(+) T cells into memory-like autoregulatory T cells in a CD4(+) Th-dependent manner.
8299 23180662 We show that decreased IL-2 production impairs the regulatory capacity of memory-like autoregulatory CD8(+) CD122(+) T cells.
8300 23180662 Surprisingly, we also find that a reduction in IL-2 production capacity increases memory autoregulatory CD8(+) T-cell formation indirectly, by decreasing the development and function of FoxP3(+) Treg cells in nonobese diabetic mice.
8301 23180662 These results illustrate a complex homeostatic interplay between IL-2, CD4(+) Th cells, FoxP3(+) CD4(+) Treg cells and autoregulatory CD8(+) T-cell memory whereby IL-2 controls the function of both Treg-cell subsets, but IL-2-potentiation of FoxP3(+) CD4(+) Treg-cell function results in the suppression of CD4(+) Th-cell activation and autoregulatory memory CD8(+) T-cell formation.
8302 23180662 IL-2 promotes the function of memory-like autoregulatory CD8+ T cells but suppresses their development via FoxP3+ Treg cells.
8303 23180662 IL-2 plays a critical role in both effector T-cell development and FoxP3(+) CD4(+) Treg-cell homeostasis.
8304 23180662 A reduction in Il2 transcription results in impaired FoxP3(+) CD4(+) Treg-cell recruitment and function, and accounts for the association between murine Il2 and type 1 diabetes (T1D).
8305 23180662 The progression of T1D elicits a disease-countering negative feedback regulatory loop that involves the differentiation of low-avidity autoreactive CD8(+) T cells into memory-like autoregulatory T cells in a CD4(+) Th-dependent manner.
8306 23180662 We show that decreased IL-2 production impairs the regulatory capacity of memory-like autoregulatory CD8(+) CD122(+) T cells.
8307 23180662 Surprisingly, we also find that a reduction in IL-2 production capacity increases memory autoregulatory CD8(+) T-cell formation indirectly, by decreasing the development and function of FoxP3(+) Treg cells in nonobese diabetic mice.
8308 23180662 These results illustrate a complex homeostatic interplay between IL-2, CD4(+) Th cells, FoxP3(+) CD4(+) Treg cells and autoregulatory CD8(+) T-cell memory whereby IL-2 controls the function of both Treg-cell subsets, but IL-2-potentiation of FoxP3(+) CD4(+) Treg-cell function results in the suppression of CD4(+) Th-cell activation and autoregulatory memory CD8(+) T-cell formation.
8309 23195956 Consistent with the hypothesis that anti-clade B serpin activity blocks the serpin from binding, exposure to exogenous anti-serpin B13 mAb or endogenous anti-serpin B13 autoantibodies resulted in cleavage of the surface molecules CD4 and CD19 in lymphocytes that accumulated in the pancreatic islets and pancreatic lymph nodes but not in the inguinal lymph nodes.
8310 23200226 One set, called type A, reacted like conventional CD4 T cells, recognizing both processed insulin protein and soluble B:9-23 peptide presented by APC.
8311 23200226 The second set, called type B, did not recognize processed insulin protein presented by APC, but reacted strongly to the presentation of soluble B:9-23 peptide.
8312 23200226 In the islets of Langerhans, beta cells constitutively generated proteolyzed peptides from insulin, which were taken up by intra-islet APC and presented to peptide-specific type B T cells.
8313 23246831 T1D is an autoimmune disorder, which involves the CD4(+) as well as CD8(+) T-cell-mediated destruction of β cells.
8314 23246831 In addition, the altered function of APCs and a subset of monocytes which spontaneously secrete IL-1β and IL-6 in T1D determine the abnormal expansion of Th17 as well.
8315 23251685 Autoreactive effector/memory CD4+ and CD8+ T cells infiltrating grafted and endogenous islets in diabetic NOD mice exhibit similar T cell receptor usage.
8316 23251685 Islet transplantation provides a "cure" for type 1 diabetes but is limited in part by recurrent autoimmunity mediated by β cell-specific CD4(+) and CD8(+) T cells.
8317 23251685 Naïve CD4(+) and CD8(+) T cells exhibited a diverse TCR repertoire, which was similar in all tissues examined in NOD recipients including the pancreas and islet grafts.
8318 23251685 Similarly, islet graft- infiltrating effector/memory CD4(+) T cells expressed a limited number of prevalent TCR Vβ chains, although generally TCR repertoire diversity was increased compared to effector/memory CD8(+) T cells.
8319 23251685 Importantly, TCR Vβ usage by effector/memory CD4(+) and CD8(+) T cells infiltrating the islet graft exhibited greater similarity to the repertoire found in the pancreas as opposed to the draining renal lymph node, pancreatic lymph node, or spleen.
8320 23251685 Together these results demonstrate that effector/memory CD4(+) and CD8(+) T cells mediating autoimmune rejection of islet grafts are characterized by restricted TCR Vβ chain usage, and are similar to T cells that drive destruction of the endogenous islets.
8321 23251685 Autoreactive effector/memory CD4+ and CD8+ T cells infiltrating grafted and endogenous islets in diabetic NOD mice exhibit similar T cell receptor usage.
8322 23251685 Islet transplantation provides a "cure" for type 1 diabetes but is limited in part by recurrent autoimmunity mediated by β cell-specific CD4(+) and CD8(+) T cells.
8323 23251685 Naïve CD4(+) and CD8(+) T cells exhibited a diverse TCR repertoire, which was similar in all tissues examined in NOD recipients including the pancreas and islet grafts.
8324 23251685 Similarly, islet graft- infiltrating effector/memory CD4(+) T cells expressed a limited number of prevalent TCR Vβ chains, although generally TCR repertoire diversity was increased compared to effector/memory CD8(+) T cells.
8325 23251685 Importantly, TCR Vβ usage by effector/memory CD4(+) and CD8(+) T cells infiltrating the islet graft exhibited greater similarity to the repertoire found in the pancreas as opposed to the draining renal lymph node, pancreatic lymph node, or spleen.
8326 23251685 Together these results demonstrate that effector/memory CD4(+) and CD8(+) T cells mediating autoimmune rejection of islet grafts are characterized by restricted TCR Vβ chain usage, and are similar to T cells that drive destruction of the endogenous islets.
8327 23251685 Autoreactive effector/memory CD4+ and CD8+ T cells infiltrating grafted and endogenous islets in diabetic NOD mice exhibit similar T cell receptor usage.
8328 23251685 Islet transplantation provides a "cure" for type 1 diabetes but is limited in part by recurrent autoimmunity mediated by β cell-specific CD4(+) and CD8(+) T cells.
8329 23251685 Naïve CD4(+) and CD8(+) T cells exhibited a diverse TCR repertoire, which was similar in all tissues examined in NOD recipients including the pancreas and islet grafts.
8330 23251685 Similarly, islet graft- infiltrating effector/memory CD4(+) T cells expressed a limited number of prevalent TCR Vβ chains, although generally TCR repertoire diversity was increased compared to effector/memory CD8(+) T cells.
8331 23251685 Importantly, TCR Vβ usage by effector/memory CD4(+) and CD8(+) T cells infiltrating the islet graft exhibited greater similarity to the repertoire found in the pancreas as opposed to the draining renal lymph node, pancreatic lymph node, or spleen.
8332 23251685 Together these results demonstrate that effector/memory CD4(+) and CD8(+) T cells mediating autoimmune rejection of islet grafts are characterized by restricted TCR Vβ chain usage, and are similar to T cells that drive destruction of the endogenous islets.
8333 23251685 Autoreactive effector/memory CD4+ and CD8+ T cells infiltrating grafted and endogenous islets in diabetic NOD mice exhibit similar T cell receptor usage.
8334 23251685 Islet transplantation provides a "cure" for type 1 diabetes but is limited in part by recurrent autoimmunity mediated by β cell-specific CD4(+) and CD8(+) T cells.
8335 23251685 Naïve CD4(+) and CD8(+) T cells exhibited a diverse TCR repertoire, which was similar in all tissues examined in NOD recipients including the pancreas and islet grafts.
8336 23251685 Similarly, islet graft- infiltrating effector/memory CD4(+) T cells expressed a limited number of prevalent TCR Vβ chains, although generally TCR repertoire diversity was increased compared to effector/memory CD8(+) T cells.
8337 23251685 Importantly, TCR Vβ usage by effector/memory CD4(+) and CD8(+) T cells infiltrating the islet graft exhibited greater similarity to the repertoire found in the pancreas as opposed to the draining renal lymph node, pancreatic lymph node, or spleen.
8338 23251685 Together these results demonstrate that effector/memory CD4(+) and CD8(+) T cells mediating autoimmune rejection of islet grafts are characterized by restricted TCR Vβ chain usage, and are similar to T cells that drive destruction of the endogenous islets.
8339 23251685 Autoreactive effector/memory CD4+ and CD8+ T cells infiltrating grafted and endogenous islets in diabetic NOD mice exhibit similar T cell receptor usage.
8340 23251685 Islet transplantation provides a "cure" for type 1 diabetes but is limited in part by recurrent autoimmunity mediated by β cell-specific CD4(+) and CD8(+) T cells.
8341 23251685 Naïve CD4(+) and CD8(+) T cells exhibited a diverse TCR repertoire, which was similar in all tissues examined in NOD recipients including the pancreas and islet grafts.
8342 23251685 Similarly, islet graft- infiltrating effector/memory CD4(+) T cells expressed a limited number of prevalent TCR Vβ chains, although generally TCR repertoire diversity was increased compared to effector/memory CD8(+) T cells.
8343 23251685 Importantly, TCR Vβ usage by effector/memory CD4(+) and CD8(+) T cells infiltrating the islet graft exhibited greater similarity to the repertoire found in the pancreas as opposed to the draining renal lymph node, pancreatic lymph node, or spleen.
8344 23251685 Together these results demonstrate that effector/memory CD4(+) and CD8(+) T cells mediating autoimmune rejection of islet grafts are characterized by restricted TCR Vβ chain usage, and are similar to T cells that drive destruction of the endogenous islets.
8345 23251685 Autoreactive effector/memory CD4+ and CD8+ T cells infiltrating grafted and endogenous islets in diabetic NOD mice exhibit similar T cell receptor usage.
8346 23251685 Islet transplantation provides a "cure" for type 1 diabetes but is limited in part by recurrent autoimmunity mediated by β cell-specific CD4(+) and CD8(+) T cells.
8347 23251685 Naïve CD4(+) and CD8(+) T cells exhibited a diverse TCR repertoire, which was similar in all tissues examined in NOD recipients including the pancreas and islet grafts.
8348 23251685 Similarly, islet graft- infiltrating effector/memory CD4(+) T cells expressed a limited number of prevalent TCR Vβ chains, although generally TCR repertoire diversity was increased compared to effector/memory CD8(+) T cells.
8349 23251685 Importantly, TCR Vβ usage by effector/memory CD4(+) and CD8(+) T cells infiltrating the islet graft exhibited greater similarity to the repertoire found in the pancreas as opposed to the draining renal lymph node, pancreatic lymph node, or spleen.
8350 23251685 Together these results demonstrate that effector/memory CD4(+) and CD8(+) T cells mediating autoimmune rejection of islet grafts are characterized by restricted TCR Vβ chain usage, and are similar to T cells that drive destruction of the endogenous islets.
8351 23261674 Low-dose alcohol administration reversed the immune response, decreasing inflammatory responses and the increment of adaptive immunity mainly related to CD4(+) T cells, but not CD8(+) T cells, to normal background levels.
8352 23291488 IPEX (immune dysregulation, polyendocrinopathy, enteropathy, and X-linked) syndrome is a rare immune disorder characterized by endocrinopathy such as insulin-dependent diabetes and hypothyroidism, intractable diarrhea, and recurrent infections.
8353 23291488 Having suffered from insulin-dependent diabetes since age two with hypothyroidism developing one year later, her clinical symptoms were quite reminiscent of IPEX syndrome.
8354 23291488 Although flow cytometry analysis revealed low expression of Foxp3 in CD4(+)CD25(+) T cells compared with healthy controls, no genetic mutation was found in the FOXP3 gene.
8355 23293979 Transient depletion of CD4+ CD25+ regulatory T cells results in multiple autoimmune diseases in wild-type and B-cell-deficient NOD mice.
8356 23293979 Under normal conditions, activation of self-reactive T cells in the periphery is limited by CD4(+) CD25(+) natural regulatory T (Treg) cells.
8357 23293979 To test the hypothesis that increased Treg cell activity in B(-/-) mice contributes to their resistance to other autoimmune diseases, WT and B(-/-) NOD mice were given anti-CD25 to transiently deplete CD4(+) CD25(+) Treg cells.
8358 23293979 Transient depletion of CD4+ CD25+ regulatory T cells results in multiple autoimmune diseases in wild-type and B-cell-deficient NOD mice.
8359 23293979 Under normal conditions, activation of self-reactive T cells in the periphery is limited by CD4(+) CD25(+) natural regulatory T (Treg) cells.
8360 23293979 To test the hypothesis that increased Treg cell activity in B(-/-) mice contributes to their resistance to other autoimmune diseases, WT and B(-/-) NOD mice were given anti-CD25 to transiently deplete CD4(+) CD25(+) Treg cells.
8361 23293979 Transient depletion of CD4+ CD25+ regulatory T cells results in multiple autoimmune diseases in wild-type and B-cell-deficient NOD mice.
8362 23293979 Under normal conditions, activation of self-reactive T cells in the periphery is limited by CD4(+) CD25(+) natural regulatory T (Treg) cells.
8363 23293979 To test the hypothesis that increased Treg cell activity in B(-/-) mice contributes to their resistance to other autoimmune diseases, WT and B(-/-) NOD mice were given anti-CD25 to transiently deplete CD4(+) CD25(+) Treg cells.
8364 23306367 Advax™ provided antigen-sparing, significantly enhanced both anti-HBs antibody titers, and anti-HBs CD4 and CD8 T-cells, with increases in Th1, Th2 and Th17 cytokine responses.
8365 23349493 We show that ablation of galectin-3 (Gal-3), a galactoside-binding lectin, accelerates high-fat diet-induced obesity and diabetes.
8366 23349493 Obese LGALS3(-/-) mice have increased body weight, amount of total visceral adipose tissue (VAT), fasting blood glucose and insulin levels, homeostasis model assessment of insulin resistance, and markers of systemic inflammation compared with diet-matched wild-type (WT) animals.
8367 23349493 VAT of obese LGALS3(-/-) mice exhibited increased incidence of type 1 T and NKT lymphocytes and proinflammatory CD11c(+)CD11b(+) macrophages and decreased CD4(+)CD25(+)FoxP3(+) regulatory T cells and M2 macrophages.
8368 23349493 Pronounced mononuclear cell infiltrate, increased expression of NLRP3 inflammasome and interleukin-1β (IL-1β) in macrophages, and increased accumulation of advanced glycation end products (AGEs) and receptor for AGE (RAGE) expression were present in pancreatic islets of obese LGALS3(-/-) animals accompanied with elevated phosphorylated nuclear factor-κB (NF-κB) p65 and mature caspase-1 protein expression in pancreatic tissue and VAT.
8369 23349493 In vitro stimulation of LGALS3(-/-) peritoneal macrophages with lipopolysaccharide (LPS) and saturated fatty acid palmitate caused increased caspase-1-dependent IL-1β production and increased phosphorylation of NF-κB p65 compared with WT cells.
8370 23349493 Transfection of LGALS3(-/-) macrophages with NLRP3 small interfering RNA attenuated IL-1β production in response to palmitate and LPS plus palmitate.
8371 23395729 Loss of the balance between CD4(+)Foxp3(+) regulatory T cells and CD4(+)IL17A(+) Th17 cells in patients with type 1 diabetes.
8372 23396943 The data show that 1) insulin is captured and rapidly internalized by 125Tg BCRs, 2) these Ag-exposed B cells are competent to activate both experienced and naive CD4(+) T cells, 3) anergic 125Tg B cells are more efficient than naive B cells at activating T cells when Ag is limiting, and 4) 125Tg B cells are competent to generate low-affinity insulin B chain epitopes necessary for activation of diabetogenic anti-insulin BDC12-4.1 T cells, indicating the pathological relevance of anergic B cells in type 1 diabetes.
8373 23401506 Here, we show that the antidiabetogenic MHC class II molecule I-A(b) affords diabetes resistance by promoting the differentiation of MHC-promiscuous autoreactive CD4(+) T cells into disease-suppressing natural regulatory T cells, in a β56-67-regulated manner.
8374 23405091 In the prevention studies, anti-CD20 plus proinsulin resulted in modest increases in Tregs in pancreatic lymph nodes and elevated levels of proinsulin-specific CD4+ T-cells that produced IL-4.
8375 23405091 Thus, combination therapy with anti-CD20 and either oral insulin or proinsulin does not protect hyperglycemic NOD mice, but the combination with proinsulin offers limited efficacy in T1D prevention, potentially by augmentation of proinsulin-specific IL-4 production.
8376 23415873 Stimulation of human T cells with PHA or CD3/CD28 induced IL-2 mRNA expression and activated the endoplasmic reticulum (ER) stress response.
8377 23415873 The treatment of T cells with curcumin induced the unfolded protein response (UPR) signaling pathway, initiated by the phosphorylation of PERK and IRE1.
8378 23415873 Furthermore, curcumin increased the expression of the ER stress associated transcriptional factors XBP-1, cleaved p50ATF6α and C/EBP homologous protein (CHOP) in human CD4+ and Jurkat T cells.
8379 23415873 In PHA-activated T cells, curcumin further enhanced PHA-induced CHOP expression and reduced the expression of the anti-apoptotic protein Bcl-2.
8380 23418596 Interestingly the mutation results in increased proportional representation of CD4(+)Foxp3(+) regulatory T cells and the absence of pathogenic CD4(+) T effectors.
8381 23418630 Postthymic expansion in human CD4 naive T cells defined by expression of functional high-affinity IL-2 receptors.
8382 23418630 In this study we present evidence that the frequency of naive CD4 T cells that express CD25 (IL-2 receptor α-chain) increases with age on subsets of both CD31(+) and CD31(-) naive CD4 T cells.
8383 23418630 Analyses of TCR excision circles from sorted subsets indicate that CD25(+) naive CD4 T cells have undergone more rounds of homeostatic proliferation than their CD25(-) counterparts in both the CD31(+) and CD31(-) subsets, indicating that CD25 is a marker of naive CD4 T cells that have preferentially responded to survival signals from self-Ags or cytokines.
8384 23418630 CD25 expression on CD25(-) naive CD4 T cells can be induced by IL-7 in vitro in the absence of TCR activation.
8385 23418630 Although CD25(+) naive T cells respond to lower concentrations of IL-2 as compared with their CD25(-) counterparts, IL-2 responsiveness is further increased in CD31(-) naive T cells by their expression of the signaling IL-2 receptor β-chain CD122, forming with common γ-chain functional high-affinity IL-2 receptors.
8386 23418630 CD25 plays a role during activation: CD25(+) naive T cells stimulated in an APC-dependent manner were shown to produce increased levels of IL-2 as compared with their CD25(-) counterparts.
8387 23418630 This study establishes CD25(+) naive CD4 T cells, which are further delineated by CD31 expression, as a major functionally distinct immune cell subset in humans that warrants further characterization in health and disease.
8388 23418630 Postthymic expansion in human CD4 naive T cells defined by expression of functional high-affinity IL-2 receptors.
8389 23418630 In this study we present evidence that the frequency of naive CD4 T cells that express CD25 (IL-2 receptor α-chain) increases with age on subsets of both CD31(+) and CD31(-) naive CD4 T cells.
8390 23418630 Analyses of TCR excision circles from sorted subsets indicate that CD25(+) naive CD4 T cells have undergone more rounds of homeostatic proliferation than their CD25(-) counterparts in both the CD31(+) and CD31(-) subsets, indicating that CD25 is a marker of naive CD4 T cells that have preferentially responded to survival signals from self-Ags or cytokines.
8391 23418630 CD25 expression on CD25(-) naive CD4 T cells can be induced by IL-7 in vitro in the absence of TCR activation.
8392 23418630 Although CD25(+) naive T cells respond to lower concentrations of IL-2 as compared with their CD25(-) counterparts, IL-2 responsiveness is further increased in CD31(-) naive T cells by their expression of the signaling IL-2 receptor β-chain CD122, forming with common γ-chain functional high-affinity IL-2 receptors.
8393 23418630 CD25 plays a role during activation: CD25(+) naive T cells stimulated in an APC-dependent manner were shown to produce increased levels of IL-2 as compared with their CD25(-) counterparts.
8394 23418630 This study establishes CD25(+) naive CD4 T cells, which are further delineated by CD31 expression, as a major functionally distinct immune cell subset in humans that warrants further characterization in health and disease.
8395 23418630 Postthymic expansion in human CD4 naive T cells defined by expression of functional high-affinity IL-2 receptors.
8396 23418630 In this study we present evidence that the frequency of naive CD4 T cells that express CD25 (IL-2 receptor α-chain) increases with age on subsets of both CD31(+) and CD31(-) naive CD4 T cells.
8397 23418630 Analyses of TCR excision circles from sorted subsets indicate that CD25(+) naive CD4 T cells have undergone more rounds of homeostatic proliferation than their CD25(-) counterparts in both the CD31(+) and CD31(-) subsets, indicating that CD25 is a marker of naive CD4 T cells that have preferentially responded to survival signals from self-Ags or cytokines.
8398 23418630 CD25 expression on CD25(-) naive CD4 T cells can be induced by IL-7 in vitro in the absence of TCR activation.
8399 23418630 Although CD25(+) naive T cells respond to lower concentrations of IL-2 as compared with their CD25(-) counterparts, IL-2 responsiveness is further increased in CD31(-) naive T cells by their expression of the signaling IL-2 receptor β-chain CD122, forming with common γ-chain functional high-affinity IL-2 receptors.
8400 23418630 CD25 plays a role during activation: CD25(+) naive T cells stimulated in an APC-dependent manner were shown to produce increased levels of IL-2 as compared with their CD25(-) counterparts.
8401 23418630 This study establishes CD25(+) naive CD4 T cells, which are further delineated by CD31 expression, as a major functionally distinct immune cell subset in humans that warrants further characterization in health and disease.
8402 23418630 Postthymic expansion in human CD4 naive T cells defined by expression of functional high-affinity IL-2 receptors.
8403 23418630 In this study we present evidence that the frequency of naive CD4 T cells that express CD25 (IL-2 receptor α-chain) increases with age on subsets of both CD31(+) and CD31(-) naive CD4 T cells.
8404 23418630 Analyses of TCR excision circles from sorted subsets indicate that CD25(+) naive CD4 T cells have undergone more rounds of homeostatic proliferation than their CD25(-) counterparts in both the CD31(+) and CD31(-) subsets, indicating that CD25 is a marker of naive CD4 T cells that have preferentially responded to survival signals from self-Ags or cytokines.
8405 23418630 CD25 expression on CD25(-) naive CD4 T cells can be induced by IL-7 in vitro in the absence of TCR activation.
8406 23418630 Although CD25(+) naive T cells respond to lower concentrations of IL-2 as compared with their CD25(-) counterparts, IL-2 responsiveness is further increased in CD31(-) naive T cells by their expression of the signaling IL-2 receptor β-chain CD122, forming with common γ-chain functional high-affinity IL-2 receptors.
8407 23418630 CD25 plays a role during activation: CD25(+) naive T cells stimulated in an APC-dependent manner were shown to produce increased levels of IL-2 as compared with their CD25(-) counterparts.
8408 23418630 This study establishes CD25(+) naive CD4 T cells, which are further delineated by CD31 expression, as a major functionally distinct immune cell subset in humans that warrants further characterization in health and disease.
8409 23418630 Postthymic expansion in human CD4 naive T cells defined by expression of functional high-affinity IL-2 receptors.
8410 23418630 In this study we present evidence that the frequency of naive CD4 T cells that express CD25 (IL-2 receptor α-chain) increases with age on subsets of both CD31(+) and CD31(-) naive CD4 T cells.
8411 23418630 Analyses of TCR excision circles from sorted subsets indicate that CD25(+) naive CD4 T cells have undergone more rounds of homeostatic proliferation than their CD25(-) counterparts in both the CD31(+) and CD31(-) subsets, indicating that CD25 is a marker of naive CD4 T cells that have preferentially responded to survival signals from self-Ags or cytokines.
8412 23418630 CD25 expression on CD25(-) naive CD4 T cells can be induced by IL-7 in vitro in the absence of TCR activation.
8413 23418630 Although CD25(+) naive T cells respond to lower concentrations of IL-2 as compared with their CD25(-) counterparts, IL-2 responsiveness is further increased in CD31(-) naive T cells by their expression of the signaling IL-2 receptor β-chain CD122, forming with common γ-chain functional high-affinity IL-2 receptors.
8414 23418630 CD25 plays a role during activation: CD25(+) naive T cells stimulated in an APC-dependent manner were shown to produce increased levels of IL-2 as compared with their CD25(-) counterparts.
8415 23418630 This study establishes CD25(+) naive CD4 T cells, which are further delineated by CD31 expression, as a major functionally distinct immune cell subset in humans that warrants further characterization in health and disease.
8416 23447122 Of note, the oral anti-CD3 treatment induced a fraction of interleukin (IL)-10-producing CD4 T cells in the small intestine through IL-10- and IL-27-producing dendritic cells.
8417 23461175 The following of cells subsets: CD19+, CD3+, CD3+CD4+, CD3+CD8+, CD3-CD16+CD56+, CD3+CD16+CD56+, CD3+CD25+, CD3+HLA-DR+, CD45+CD95+ were investigated.
8418 23461175 In this research was establish the rise of immunoregulatory index (CD3+CD4+/CD3+CD8+) in consequence of decrease the percentages of cytotoxic T-lymphocytes in patients with DM2 and obesity in comparison with the healthy persons.
8419 23461175 The direct correlation was found between the increased quantity of NKT-cells (CD3+CD16+CD56+) and contain of triglicerides in the peripheral blood of patients with DM2.
8420 23461175 The following of cells subsets: CD19+, CD3+, CD3+CD4+, CD3+CD8+, CD3-CD16+CD56+, CD3+CD16+CD56+, CD3+CD25+, CD3+HLA-DR+, CD45+CD95+ were investigated.
8421 23461175 In this research was establish the rise of immunoregulatory index (CD3+CD4+/CD3+CD8+) in consequence of decrease the percentages of cytotoxic T-lymphocytes in patients with DM2 and obesity in comparison with the healthy persons.
8422 23461175 The direct correlation was found between the increased quantity of NKT-cells (CD3+CD16+CD56+) and contain of triglicerides in the peripheral blood of patients with DM2.
8423 23466550 Impact of culture medium on CD4(+) CD25(high)CD127(lo/neg) Treg expansion for the purpose of clinical application.
8424 23466550 We compared Treg fold of expansion and their phenotypical characteristics including expression of FoxP3, CD25, CD127, CD62L and CD45RA in three commercially available culture media (RPMI 1640 (Cellgro; Manassas VA, USA), SCGM (Cellgenix; Freiburg, Germany), and X-VIVO 20 (Lonza; Walkersville, MD, USA)) with addition of human serum (HS, 10%) or fetal bovine serum (FBS, 10%).
8425 23466550 Among the tested media, X-VIVO 20 supplemented with HS produced the highest yield after 17days of in vitro expansion (a median of 86-fold expansion, range 30-1365) and highest level of FoxP3 expression (a median of 66.8% of positive cells, range 56-84.8%) in CD4(+) CD25(hi)CD127(lo/neg) FACS sorted polyclonal Tregs.
8426 23466550 Impact of culture medium on CD4(+) CD25(high)CD127(lo/neg) Treg expansion for the purpose of clinical application.
8427 23466550 We compared Treg fold of expansion and their phenotypical characteristics including expression of FoxP3, CD25, CD127, CD62L and CD45RA in three commercially available culture media (RPMI 1640 (Cellgro; Manassas VA, USA), SCGM (Cellgenix; Freiburg, Germany), and X-VIVO 20 (Lonza; Walkersville, MD, USA)) with addition of human serum (HS, 10%) or fetal bovine serum (FBS, 10%).
8428 23466550 Among the tested media, X-VIVO 20 supplemented with HS produced the highest yield after 17days of in vitro expansion (a median of 86-fold expansion, range 30-1365) and highest level of FoxP3 expression (a median of 66.8% of positive cells, range 56-84.8%) in CD4(+) CD25(hi)CD127(lo/neg) FACS sorted polyclonal Tregs.
8429 23469279 Glucagon-like peptide-1(9-36) inhibits chemokine-induced migration of human CD4-positive lymphocytes.
8430 23534927 Obesity, a chronic, low-grade inflammatory disease, is associated with alterations of multiple immune-cell components in the visceral adipose tissue (VAT), in which CD4(+) Foxp3(+) regulatory T cells (Tregs) have been suggested to be a critical regulator.
8431 23537861 The interaction between the components of the trimolecular complex (CD4(+) T cell receptors, self-peptide, and MHC class II molecules) plays a pivotal role in autoimmune disease pathogenesis.
8432 23537861 This review focuses on the components of the anti-insulin trimolecular complex, registers of insulin peptide binding to 'diabetogenic' MHC class II molecules, and therapies targeting each component of the trimolecular complex.
8433 23545706 PD-1, but not PD-L1, expressed by islet-reactive CD4+ T cells suppresses infiltration of the pancreas during type 1 diabetes.
8434 23545706 However, how PD-1 influences diabetogenic CD4(+) T cells during natural diabetes is not fully understood.
8435 23545706 Transferred BDC2.5 T cells became activated, differentiated into T-bet(+) IFN-γ-producing cells, and infiltrated the pancreas.
8436 23545706 In this model, loss of PD-1, but not programmed death ligand-1 (PD-L1), on the antigen-specific CD4(+) T cell resulted in increased cell numbers in the spleen, pancreas-draining lymph node, and pancreas.
8437 23545706 PD-1 deficiency also increased expression of the chemokine receptor CXCR3.
8438 23545706 These data support a model by which PD-1 regulates islet-reactive CD4(+) T cells in a cell intrinsic manner by suppressing proliferation, inhibiting infiltration of the pancreas, and limiting diabetes.
8439 23545706 PD-1, but not PD-L1, expressed by islet-reactive CD4+ T cells suppresses infiltration of the pancreas during type 1 diabetes.
8440 23545706 However, how PD-1 influences diabetogenic CD4(+) T cells during natural diabetes is not fully understood.
8441 23545706 Transferred BDC2.5 T cells became activated, differentiated into T-bet(+) IFN-γ-producing cells, and infiltrated the pancreas.
8442 23545706 In this model, loss of PD-1, but not programmed death ligand-1 (PD-L1), on the antigen-specific CD4(+) T cell resulted in increased cell numbers in the spleen, pancreas-draining lymph node, and pancreas.
8443 23545706 PD-1 deficiency also increased expression of the chemokine receptor CXCR3.
8444 23545706 These data support a model by which PD-1 regulates islet-reactive CD4(+) T cells in a cell intrinsic manner by suppressing proliferation, inhibiting infiltration of the pancreas, and limiting diabetes.
8445 23545706 PD-1, but not PD-L1, expressed by islet-reactive CD4+ T cells suppresses infiltration of the pancreas during type 1 diabetes.
8446 23545706 However, how PD-1 influences diabetogenic CD4(+) T cells during natural diabetes is not fully understood.
8447 23545706 Transferred BDC2.5 T cells became activated, differentiated into T-bet(+) IFN-γ-producing cells, and infiltrated the pancreas.
8448 23545706 In this model, loss of PD-1, but not programmed death ligand-1 (PD-L1), on the antigen-specific CD4(+) T cell resulted in increased cell numbers in the spleen, pancreas-draining lymph node, and pancreas.
8449 23545706 PD-1 deficiency also increased expression of the chemokine receptor CXCR3.
8450 23545706 These data support a model by which PD-1 regulates islet-reactive CD4(+) T cells in a cell intrinsic manner by suppressing proliferation, inhibiting infiltration of the pancreas, and limiting diabetes.
8451 23545706 PD-1, but not PD-L1, expressed by islet-reactive CD4+ T cells suppresses infiltration of the pancreas during type 1 diabetes.
8452 23545706 However, how PD-1 influences diabetogenic CD4(+) T cells during natural diabetes is not fully understood.
8453 23545706 Transferred BDC2.5 T cells became activated, differentiated into T-bet(+) IFN-γ-producing cells, and infiltrated the pancreas.
8454 23545706 In this model, loss of PD-1, but not programmed death ligand-1 (PD-L1), on the antigen-specific CD4(+) T cell resulted in increased cell numbers in the spleen, pancreas-draining lymph node, and pancreas.
8455 23545706 PD-1 deficiency also increased expression of the chemokine receptor CXCR3.
8456 23545706 These data support a model by which PD-1 regulates islet-reactive CD4(+) T cells in a cell intrinsic manner by suppressing proliferation, inhibiting infiltration of the pancreas, and limiting diabetes.
8457 23562076 Improved insulin sensitivity despite increased visceral adiposity in mice deficient for the immune cell transcription factor T-bet.
8458 23562076 We report that mice deficient in the immune cell transcription factor T-bet have lower energy expenditure and increased visceral fat compared with wild-type mice, yet paradoxically are more insulin sensitive.
8459 23562076 Indeed, adoptive transfer of T-bet-deficient, but not wild-type, CD4(+) T cells to Rag2(-/-) mice improved insulin sensitivity.
8460 23562076 Our results reveal a role for T-bet in metabolic physiology and obesity-associated insulin resistance.
8461 23589231 MicroRNA expressions in PMBCs, CD4+, and CD8+ T-cells from patients suffering from autoimmune Addison's disease.
8462 23589231 In CD4+ T-cells miRNA 181a*_1 (18.02 in AD vs. 11.99 in CG, p=0.0047) is significantly increased whereas miRNA 200a_1 (12.48 in AD vs. 19.40 in CG, p=0.0003) and miRNA 200a_2* (8.59 in AD vs. 17.94 in CG, p=0.0160) are significantly decreased. miRNA 200a_1 (12.37 in AD group vs. 18.12 in control group, p=0.001) and miRNA 200a_2* (10.72 in AD group vs. 17.84 in control group, p=0.022) are also significantly decreased in CD8+ T-cells.
8463 23589231 This study could show for the first time a significant change of three defined miRNAs in PBMCs, CD4+, and CD8+ T-cells of autoimmune AD patients in vivo.
8464 23589231 MicroRNA expressions in PMBCs, CD4+, and CD8+ T-cells from patients suffering from autoimmune Addison's disease.
8465 23589231 In CD4+ T-cells miRNA 181a*_1 (18.02 in AD vs. 11.99 in CG, p=0.0047) is significantly increased whereas miRNA 200a_1 (12.48 in AD vs. 19.40 in CG, p=0.0003) and miRNA 200a_2* (8.59 in AD vs. 17.94 in CG, p=0.0160) are significantly decreased. miRNA 200a_1 (12.37 in AD group vs. 18.12 in control group, p=0.001) and miRNA 200a_2* (10.72 in AD group vs. 17.84 in control group, p=0.022) are also significantly decreased in CD8+ T-cells.
8466 23589231 This study could show for the first time a significant change of three defined miRNAs in PBMCs, CD4+, and CD8+ T-cells of autoimmune AD patients in vivo.
8467 23589231 MicroRNA expressions in PMBCs, CD4+, and CD8+ T-cells from patients suffering from autoimmune Addison's disease.
8468 23589231 In CD4+ T-cells miRNA 181a*_1 (18.02 in AD vs. 11.99 in CG, p=0.0047) is significantly increased whereas miRNA 200a_1 (12.48 in AD vs. 19.40 in CG, p=0.0003) and miRNA 200a_2* (8.59 in AD vs. 17.94 in CG, p=0.0160) are significantly decreased. miRNA 200a_1 (12.37 in AD group vs. 18.12 in control group, p=0.001) and miRNA 200a_2* (10.72 in AD group vs. 17.84 in control group, p=0.022) are also significantly decreased in CD8+ T-cells.
8469 23589231 This study could show for the first time a significant change of three defined miRNAs in PBMCs, CD4+, and CD8+ T-cells of autoimmune AD patients in vivo.
8470 23593036 Functional IL6R 358Ala allele impairs classical IL-6 receptor signaling and influences risk of diverse inflammatory diseases.
8471 23593036 Although a common, non-synonymous variant in the IL-6 receptor gene (IL6R Asp358Ala; rs2228145 A>C) is associated with the risk of several common diseases, with the 358Ala allele conferring protection from coronary heart disease (CHD), rheumatoid arthritis (RA), atrial fibrillation (AF), abdominal aortic aneurysm (AAA), and increased susceptibility to asthma, the variant's effect on IL-6 signaling is not known.
8472 23593036 We demonstrate that, although 358Ala increases transcription of the soluble IL6R isoform (P = 8.3×10⁻²²) and not the membrane-bound isoform, 358Ala reduces surface expression of IL-6R on CD4+ T cells and monocytes (up to 28% reduction per allele; P≤5.6×10⁻²²).
8473 23593036 Importantly, reduced expression of membrane-bound IL-6R resulted in impaired IL-6 responsiveness, as measured by decreased phosphorylation of the transcription factors STAT3 and STAT1 following stimulation with IL-6 (P≤5.2×10⁻⁷).
8474 23593036 Our findings elucidate the regulation of IL-6 signaling by IL-6R, which is causally relevant to several complex diseases, identify mechanisms for new approaches to target the IL-6/IL-6R axis, and anticipate differences in treatment response to IL-6 therapies based on this common IL6R variant.
8475 23600827 Glutamic acid decarboxylase (GAD)(65) formulated with aluminium hydroxide (GAD-alum) was effective in preserving insulin secretion in a Phase II clinical trial in children and adolescents with recent-onset type 1 diabetes.
8476 23600827 In addition, GAD-alum treated patients increased CD4(+) CD25(hi) forkhead box protein 3(+) (FoxP3(+)) cell numbers in response to in-vitro GAD(65) stimulation.
8477 23600827 Regulatory T cells (CD4(+) CD25(hi) CD127(lo)) and effector T cells (CD4(+) CD25(-) CD127(+)) were further sorted, expanded and used in suppression assays to assess regulatory T cell function after GAD-alum treatment.
8478 23600827 GAD-alum-treated patients displayed higher frequencies of in-vitro GAD(65) -induced CD4(+) CD25(+) CD127(+) as well as CD4(+) CD25(hi) CD127(lo) and CD4(+) FoxP3(+) cells compared to placebo.
8479 23600827 Moreover, GAD(65) stimulation induced a population of CD4(hi) cells consisting mainly of CD25(+) CD127(+) , which was specific of GAD-alum-treated patients (16 of 25 versus one of 25 in placebo).
8480 23600827 In conclusion, GAD-alum treatment induced both GAD(65) -reactive CD25(+) CD127(+) and CD25(hi) CD127(lo) cells, but no difference in regulatory T cell function 4 years after GAD-alum treatment.
8481 23600827 Glutamic acid decarboxylase (GAD)(65) formulated with aluminium hydroxide (GAD-alum) was effective in preserving insulin secretion in a Phase II clinical trial in children and adolescents with recent-onset type 1 diabetes.
8482 23600827 In addition, GAD-alum treated patients increased CD4(+) CD25(hi) forkhead box protein 3(+) (FoxP3(+)) cell numbers in response to in-vitro GAD(65) stimulation.
8483 23600827 Regulatory T cells (CD4(+) CD25(hi) CD127(lo)) and effector T cells (CD4(+) CD25(-) CD127(+)) were further sorted, expanded and used in suppression assays to assess regulatory T cell function after GAD-alum treatment.
8484 23600827 GAD-alum-treated patients displayed higher frequencies of in-vitro GAD(65) -induced CD4(+) CD25(+) CD127(+) as well as CD4(+) CD25(hi) CD127(lo) and CD4(+) FoxP3(+) cells compared to placebo.
8485 23600827 Moreover, GAD(65) stimulation induced a population of CD4(hi) cells consisting mainly of CD25(+) CD127(+) , which was specific of GAD-alum-treated patients (16 of 25 versus one of 25 in placebo).
8486 23600827 In conclusion, GAD-alum treatment induced both GAD(65) -reactive CD25(+) CD127(+) and CD25(hi) CD127(lo) cells, but no difference in regulatory T cell function 4 years after GAD-alum treatment.
8487 23600827 Glutamic acid decarboxylase (GAD)(65) formulated with aluminium hydroxide (GAD-alum) was effective in preserving insulin secretion in a Phase II clinical trial in children and adolescents with recent-onset type 1 diabetes.
8488 23600827 In addition, GAD-alum treated patients increased CD4(+) CD25(hi) forkhead box protein 3(+) (FoxP3(+)) cell numbers in response to in-vitro GAD(65) stimulation.
8489 23600827 Regulatory T cells (CD4(+) CD25(hi) CD127(lo)) and effector T cells (CD4(+) CD25(-) CD127(+)) were further sorted, expanded and used in suppression assays to assess regulatory T cell function after GAD-alum treatment.
8490 23600827 GAD-alum-treated patients displayed higher frequencies of in-vitro GAD(65) -induced CD4(+) CD25(+) CD127(+) as well as CD4(+) CD25(hi) CD127(lo) and CD4(+) FoxP3(+) cells compared to placebo.
8491 23600827 Moreover, GAD(65) stimulation induced a population of CD4(hi) cells consisting mainly of CD25(+) CD127(+) , which was specific of GAD-alum-treated patients (16 of 25 versus one of 25 in placebo).
8492 23600827 In conclusion, GAD-alum treatment induced both GAD(65) -reactive CD25(+) CD127(+) and CD25(hi) CD127(lo) cells, but no difference in regulatory T cell function 4 years after GAD-alum treatment.
8493 23600827 Glutamic acid decarboxylase (GAD)(65) formulated with aluminium hydroxide (GAD-alum) was effective in preserving insulin secretion in a Phase II clinical trial in children and adolescents with recent-onset type 1 diabetes.
8494 23600827 In addition, GAD-alum treated patients increased CD4(+) CD25(hi) forkhead box protein 3(+) (FoxP3(+)) cell numbers in response to in-vitro GAD(65) stimulation.
8495 23600827 Regulatory T cells (CD4(+) CD25(hi) CD127(lo)) and effector T cells (CD4(+) CD25(-) CD127(+)) were further sorted, expanded and used in suppression assays to assess regulatory T cell function after GAD-alum treatment.
8496 23600827 GAD-alum-treated patients displayed higher frequencies of in-vitro GAD(65) -induced CD4(+) CD25(+) CD127(+) as well as CD4(+) CD25(hi) CD127(lo) and CD4(+) FoxP3(+) cells compared to placebo.
8497 23600827 Moreover, GAD(65) stimulation induced a population of CD4(hi) cells consisting mainly of CD25(+) CD127(+) , which was specific of GAD-alum-treated patients (16 of 25 versus one of 25 in placebo).
8498 23600827 In conclusion, GAD-alum treatment induced both GAD(65) -reactive CD25(+) CD127(+) and CD25(hi) CD127(lo) cells, but no difference in regulatory T cell function 4 years after GAD-alum treatment.
8499 23607886 CD4(+) forkhead box protein 3 (FoxP3)(+) T cells are composed of three phenotypically and functionally distinct subpopulations; CD45RA(+) FoxP3(low) resting T(regs) (r-T(regs)), CD45RA(-) FoxP3(high) activated T(regs) (a-T(regs)) and CD45RA(-) FoxP3(low) non-suppressive T cells (non-T(regs)).
8500 23607886 We aimed to clarify the frequency of these three subpopulations in CD4(+) FoxP3(+) T cells and the function of a-T(regs) with reference to subtypes of type 1 diabetes.
8501 23607886 Further, the proportion of a-T(regs) among CD4(+) FoxP3(+) T cells was significantly higher in patients with type 1A diabetes with detectable C-peptide but not in patients with type 1A diabetes without it and with fulminant type 1 diabetes.
8502 23607886 CD4(+) forkhead box protein 3 (FoxP3)(+) T cells are composed of three phenotypically and functionally distinct subpopulations; CD45RA(+) FoxP3(low) resting T(regs) (r-T(regs)), CD45RA(-) FoxP3(high) activated T(regs) (a-T(regs)) and CD45RA(-) FoxP3(low) non-suppressive T cells (non-T(regs)).
8503 23607886 We aimed to clarify the frequency of these three subpopulations in CD4(+) FoxP3(+) T cells and the function of a-T(regs) with reference to subtypes of type 1 diabetes.
8504 23607886 Further, the proportion of a-T(regs) among CD4(+) FoxP3(+) T cells was significantly higher in patients with type 1A diabetes with detectable C-peptide but not in patients with type 1A diabetes without it and with fulminant type 1 diabetes.
8505 23607886 CD4(+) forkhead box protein 3 (FoxP3)(+) T cells are composed of three phenotypically and functionally distinct subpopulations; CD45RA(+) FoxP3(low) resting T(regs) (r-T(regs)), CD45RA(-) FoxP3(high) activated T(regs) (a-T(regs)) and CD45RA(-) FoxP3(low) non-suppressive T cells (non-T(regs)).
8506 23607886 We aimed to clarify the frequency of these three subpopulations in CD4(+) FoxP3(+) T cells and the function of a-T(regs) with reference to subtypes of type 1 diabetes.
8507 23607886 Further, the proportion of a-T(regs) among CD4(+) FoxP3(+) T cells was significantly higher in patients with type 1A diabetes with detectable C-peptide but not in patients with type 1A diabetes without it and with fulminant type 1 diabetes.
8508 23611977 CD4/CD8 ratio remained stable in treated subjects but declined in control subjects (P = .03).
8509 23638232 Immunohistochemically, the lymphoid cells were positive for vimentin, CD3, CD4, CD5, CD8, CD10, CD15, CD20, CD23, CD30, CD43, CD38, CD138, CD45RO, CD79α, bcl-2, bcl-6, κ-chain, λ-chain, and Ki-67 (labeling index=7%).
8510 23638232 The lymphoblastic cells were positively labeled for CD15 and CD30.
8511 23638232 They were negative for cytokeratin (CK) CAM5.2, CKAE1/3, CK34BE12, CK5/6, CK7, CK8, CK18, CK19, CK20, EMA, CEA, CD56, CD57, p53, KIT, PDGFRA, and cyclin D1.
8512 23638232 The low Ki-67 labeling and negative p53 also suggested the diagnosis.
8513 23650440 Results from gene signature analyses, quantification of STAT5 phosphorylation levels, cytokine neutralization experiments, cytokine supplementation studies, and evaluations of intracellular cytokine levels collectively argue for a scenario in which T reg cells regulate NK cell functions by controlling the bioavailability of limiting amounts of IL-2 in the islets, generated mainly by infiltrating CD4(+) T cells.
8514 23657001 Treg cells endowed with enhanced killing activity through decoration with Fas-ligand (FasL) protein (killer Treg) have been effective in delay of hyperglycemia in prediabetic non-obese diabetic (NOD) mice.
8515 23657001 A second mechanism of action consisted of increased fractions of CD4(+)CD25(-)FoxP3(+) T cells in the pancreas and all lymphoid organs.
8516 23657001 Immunomodulation with FasL rather than Treg cells enhanced the expression of CD25 and FoxP3 in the thymus, suggesting a possible contribution of thymic output to prolonged stabilization of the glucose levels.
8517 23663075 Expression of GzmA and Fas was enhanced in the islets from pre-diabetic NOD.GzmB(-/-) mice.
8518 23663075 Cyclophosphamide treatment led to a significantly lower percentage of apoptotic CD4(+) , CD8(+) and CD4(+) CD25(+) T cells in SPCs from NOD.GzmB(-/-) mice than those from wt-NOD mice.
8519 23685786 T cell regulation mediated by interaction of soluble CD52 with the inhibitory receptor Siglec-10.
8520 23685786 CD52(hi)CD4(+) T cells were distinct from CD4(+)CD25(+)Foxp3(+) regulatory T cells.
8521 23685786 Their suppression was mediated by soluble CD52 released by phospholipase C.
8522 23685786 Soluble CD52 bound to the inhibitory receptor Siglec-10 and impaired phosphorylation of the T cell receptor-associated kinases Lck and Zap70 and T cell activation.
8523 23685786 Humans with type 1 diabetes had a lower frequency and diminished function of CD52(hi)CD4(+) T cells responsive to the autoantigen GAD65.
8524 23685786 T cell regulation mediated by interaction of soluble CD52 with the inhibitory receptor Siglec-10.
8525 23685786 CD52(hi)CD4(+) T cells were distinct from CD4(+)CD25(+)Foxp3(+) regulatory T cells.
8526 23685786 Their suppression was mediated by soluble CD52 released by phospholipase C.
8527 23685786 Soluble CD52 bound to the inhibitory receptor Siglec-10 and impaired phosphorylation of the T cell receptor-associated kinases Lck and Zap70 and T cell activation.
8528 23685786 Humans with type 1 diabetes had a lower frequency and diminished function of CD52(hi)CD4(+) T cells responsive to the autoantigen GAD65.
8529 23691523 In recent years, increasing evidence has implicated CD4(+)CD25(+) regulatory T (Treg) cells expressing the transcription factor Foxp3 in both the breakdown of self-tolerance and the restoration of immune homeostasis in T1D.
8530 23707515 Other pro-inflammatory cells found in AT include neutrophils, Th1 CD4 T cells, CD8 T cells, B cells, DCs, and mast cells.
8531 23709681 Thymic damage, impaired negative selection, and development of chronic graft-versus-host disease caused by donor CD4+ and CD8+ T cells.
8532 23709681 Donor CD8(+) T cells were more potent than CD4(+) T cells for inducing cGVHD.
8533 23709681 The recipient thymus and de novo-generated, donor-derived CD4(+) T cells were required for induction of cGVHD by donor CD8(+) T cells but not by donor CD4(+) T cells.
8534 23709681 Donor CD8(+) T cells preferentially damaged recipient medullary thymic epithelial cells and impaired negative selection, resulting in production of autoreactive CD4(+) T cells that perpetuated damage to the thymus and augmented the development of cGVHD.
8535 23709681 These results demonstrate that donor CD8(+) T cells cause cGVHD solely through thymic-dependent mechanisms, whereas CD4(+) T cells can cause cGVHD through either thymic-dependent or independent mechanisms.
8536 23709681 Thymic damage, impaired negative selection, and development of chronic graft-versus-host disease caused by donor CD4+ and CD8+ T cells.
8537 23709681 Donor CD8(+) T cells were more potent than CD4(+) T cells for inducing cGVHD.
8538 23709681 The recipient thymus and de novo-generated, donor-derived CD4(+) T cells were required for induction of cGVHD by donor CD8(+) T cells but not by donor CD4(+) T cells.
8539 23709681 Donor CD8(+) T cells preferentially damaged recipient medullary thymic epithelial cells and impaired negative selection, resulting in production of autoreactive CD4(+) T cells that perpetuated damage to the thymus and augmented the development of cGVHD.
8540 23709681 These results demonstrate that donor CD8(+) T cells cause cGVHD solely through thymic-dependent mechanisms, whereas CD4(+) T cells can cause cGVHD through either thymic-dependent or independent mechanisms.
8541 23709681 Thymic damage, impaired negative selection, and development of chronic graft-versus-host disease caused by donor CD4+ and CD8+ T cells.
8542 23709681 Donor CD8(+) T cells were more potent than CD4(+) T cells for inducing cGVHD.
8543 23709681 The recipient thymus and de novo-generated, donor-derived CD4(+) T cells were required for induction of cGVHD by donor CD8(+) T cells but not by donor CD4(+) T cells.
8544 23709681 Donor CD8(+) T cells preferentially damaged recipient medullary thymic epithelial cells and impaired negative selection, resulting in production of autoreactive CD4(+) T cells that perpetuated damage to the thymus and augmented the development of cGVHD.
8545 23709681 These results demonstrate that donor CD8(+) T cells cause cGVHD solely through thymic-dependent mechanisms, whereas CD4(+) T cells can cause cGVHD through either thymic-dependent or independent mechanisms.
8546 23709681 Thymic damage, impaired negative selection, and development of chronic graft-versus-host disease caused by donor CD4+ and CD8+ T cells.
8547 23709681 Donor CD8(+) T cells were more potent than CD4(+) T cells for inducing cGVHD.
8548 23709681 The recipient thymus and de novo-generated, donor-derived CD4(+) T cells were required for induction of cGVHD by donor CD8(+) T cells but not by donor CD4(+) T cells.
8549 23709681 Donor CD8(+) T cells preferentially damaged recipient medullary thymic epithelial cells and impaired negative selection, resulting in production of autoreactive CD4(+) T cells that perpetuated damage to the thymus and augmented the development of cGVHD.
8550 23709681 These results demonstrate that donor CD8(+) T cells cause cGVHD solely through thymic-dependent mechanisms, whereas CD4(+) T cells can cause cGVHD through either thymic-dependent or independent mechanisms.
8551 23709681 Thymic damage, impaired negative selection, and development of chronic graft-versus-host disease caused by donor CD4+ and CD8+ T cells.
8552 23709681 Donor CD8(+) T cells were more potent than CD4(+) T cells for inducing cGVHD.
8553 23709681 The recipient thymus and de novo-generated, donor-derived CD4(+) T cells were required for induction of cGVHD by donor CD8(+) T cells but not by donor CD4(+) T cells.
8554 23709681 Donor CD8(+) T cells preferentially damaged recipient medullary thymic epithelial cells and impaired negative selection, resulting in production of autoreactive CD4(+) T cells that perpetuated damage to the thymus and augmented the development of cGVHD.
8555 23709681 These results demonstrate that donor CD8(+) T cells cause cGVHD solely through thymic-dependent mechanisms, whereas CD4(+) T cells can cause cGVHD through either thymic-dependent or independent mechanisms.
8556 23715623 In vitro exposure of bone marrow-derived DCs to TGF-β reduced expression of costimulatory molecules CD80 and CD86, as well as production of proinflammatory cytokines such as interleukin-12 p70 in DCs, but did not alter levels of major histocompatibility complex classes I and II.
8557 23715623 Furthermore, the capacity of TGF-β-treated bone marrow-derived DCs to activate both CD4(+) and CD8(+) T cells was reduced.
8558 23724162 Type 1 diabetes mellitus (T1DM) is characterized by recognition of beta cell proteins as self-antigens, called autoantigens (AAgs), by patients' own CD4+ and CD8+ T cells and/or the products of self-reactive B cells, called autoantibodies.
8559 23724162 Since many excellent reviews have covered the previously identified T1DM-associated AAgs exhaustedly, here we only focus on several recently discovered T1DM-AAgs (PDX1, ZnT8, CHGA, and IAAP).
8560 23728300 Here, by studying mice in which the Bach2 gene is disrupted, we define BACH2 as a broad regulator of immune activation that stabilizes immunoregulatory capacity while repressing the differentiation programs of multiple effector lineages in CD4(+) T cells.
8561 23728300 These findings identify BACH2 as a key regulator of CD4(+) T-cell differentiation that prevents inflammatory disease by controlling the balance between tolerance and immunity.
8562 23728300 Here, by studying mice in which the Bach2 gene is disrupted, we define BACH2 as a broad regulator of immune activation that stabilizes immunoregulatory capacity while repressing the differentiation programs of multiple effector lineages in CD4(+) T cells.
8563 23728300 These findings identify BACH2 as a key regulator of CD4(+) T-cell differentiation that prevents inflammatory disease by controlling the balance between tolerance and immunity.
8564 23730508 The hepatic sinusoidal lymphoid cells were strongly positive for CD2, CD3 and CD5 whereas CD4, CD8 stained only minor subsets of the T cells.
8565 23730508 Subsequent flow cytometric immunophenotypying of peripheral blood identified T-cell receptor alpha/beta positive cells that lacked CD4 and CD8 (double negative alpha/beta T cells).
8566 23730508 The hepatic sinusoidal lymphoid cells were strongly positive for CD2, CD3 and CD5 whereas CD4, CD8 stained only minor subsets of the T cells.
8567 23730508 Subsequent flow cytometric immunophenotypying of peripheral blood identified T-cell receptor alpha/beta positive cells that lacked CD4 and CD8 (double negative alpha/beta T cells).
8568 23733197 However, weight cycling did increase the number of CD4(+) and CD8(+) T cells in AT.
8569 23735590 Five patients showed CD4-/CD8+/bF-1+ phenotype with TIA-1 expression.
8570 23740949 In this study, we show that expression of I-E on dendritic cells (DCs) of NOD mice promotes the differentiation of MHC promiscuous autoreactive CD4(+) clonotypes into antidiabetogenic autoregulatory T cells.
8571 23740949 We expressed an I-Eα(kloxP) transgene in NOD mice and used cell type-specific I-E ablation to show that I-E-expressing DCs, but not B cells, promote the generation of autoreactive CD4(+)Foxp3(+) regulatory T cells (Tregs) and their accumulation in the pancreas-draining lymph nodes.
8572 23740949 There, these Tregs suppress the presentation of β cell Ags to naive autoreactive CD4(+) and CD8(+) T cells restricted by diabetogenic MHC molecules in an I-E-independent manner.
8573 23740949 In this study, we show that expression of I-E on dendritic cells (DCs) of NOD mice promotes the differentiation of MHC promiscuous autoreactive CD4(+) clonotypes into antidiabetogenic autoregulatory T cells.
8574 23740949 We expressed an I-Eα(kloxP) transgene in NOD mice and used cell type-specific I-E ablation to show that I-E-expressing DCs, but not B cells, promote the generation of autoreactive CD4(+)Foxp3(+) regulatory T cells (Tregs) and their accumulation in the pancreas-draining lymph nodes.
8575 23740949 There, these Tregs suppress the presentation of β cell Ags to naive autoreactive CD4(+) and CD8(+) T cells restricted by diabetogenic MHC molecules in an I-E-independent manner.
8576 23740949 In this study, we show that expression of I-E on dendritic cells (DCs) of NOD mice promotes the differentiation of MHC promiscuous autoreactive CD4(+) clonotypes into antidiabetogenic autoregulatory T cells.
8577 23740949 We expressed an I-Eα(kloxP) transgene in NOD mice and used cell type-specific I-E ablation to show that I-E-expressing DCs, but not B cells, promote the generation of autoreactive CD4(+)Foxp3(+) regulatory T cells (Tregs) and their accumulation in the pancreas-draining lymph nodes.
8578 23740949 There, these Tregs suppress the presentation of β cell Ags to naive autoreactive CD4(+) and CD8(+) T cells restricted by diabetogenic MHC molecules in an I-E-independent manner.
8579 23741311 We also found that there was a higher percentage of Sema4D(high) CD3(+) (P<0.01), CD4(+) (P<0.001), and CD8(+) (P<0.01) T-cells in samples from HF patients, but no changes in Sema4D expression levels in B cells and platelets.
8580 23750800 Delayed anti-CD3 therapy results in depletion of alloreactive T cells and the dominance of Foxp3+ CD4+ graft infiltrating cells.
8581 23752610 The transgenic mice had a significantly lower incidence of spontaneous autoimmune diabetes, which was accompanied by fewer IFN-γ-producing T cells, and an increased ratio of CD4(+)Foxp3(+) T(regs)to CD4(+)IFN-γ(+) or to CD8(+)IFN-γ(+) T cells, respectively, in pancreatic islets.
8582 23752610 To examine further the pathogenic features of transgenic T cells, we generated Ptpn22/BDC2.5 doubly transgenic mice and found reduced proliferation and Th1 differentiation in CD4(+) T lymphocytes with additional Pep in pancreatic lymph nodes but not in inguinal lymph nodes of NOD/SCID recipients.
8583 23752610 The transgenic mice had a significantly lower incidence of spontaneous autoimmune diabetes, which was accompanied by fewer IFN-γ-producing T cells, and an increased ratio of CD4(+)Foxp3(+) T(regs)to CD4(+)IFN-γ(+) or to CD8(+)IFN-γ(+) T cells, respectively, in pancreatic islets.
8584 23752610 To examine further the pathogenic features of transgenic T cells, we generated Ptpn22/BDC2.5 doubly transgenic mice and found reduced proliferation and Th1 differentiation in CD4(+) T lymphocytes with additional Pep in pancreatic lymph nodes but not in inguinal lymph nodes of NOD/SCID recipients.
8585 23776180 Although defining pathogenic effector T cells in autoimmunity has been inconsistent, CD4(+) cells expressing the CD40 receptor (Th40 cells) are highly diabetogenic in NOD mice, and NOD.BDC2.5.TCR.Tg mice possess large numbers of these cells.
8586 23776180 Regulatory T cells, CD4(+)CD25(hi)Foxp3(+), develop normally, but pathogenic effector cells are severely reduced in number.
8587 23776180 Mechanistically, Foxp3(+) cells produce IL-17 but do not produce IFN-γ, whereas Foxp3(-) Th40 cells produce IFN-γ and IL-2.
8588 23776180 Although defining pathogenic effector T cells in autoimmunity has been inconsistent, CD4(+) cells expressing the CD40 receptor (Th40 cells) are highly diabetogenic in NOD mice, and NOD.BDC2.5.TCR.Tg mice possess large numbers of these cells.
8589 23776180 Regulatory T cells, CD4(+)CD25(hi)Foxp3(+), develop normally, but pathogenic effector cells are severely reduced in number.
8590 23776180 Mechanistically, Foxp3(+) cells produce IL-17 but do not produce IFN-γ, whereas Foxp3(-) Th40 cells produce IFN-γ and IL-2.
8591 23795893 These host-derived CD4(+) T cells were enriched for conventional regulatory T cells (Tregs ) (CD25(+) forkhead box protein 3 (FoxP3)(+)] and also for host- derived CD4(+)CD25(-)FoxP3(-) T cells that express markers of suppressive function, CD73, FR4 and CD39.
8592 23803704 No significant changes were noted in interferon-γ, interleukin-4 (IL-4), or IL-10 production in CD4 T cells.
8593 23834659 Whereas CD4(+) CD25(-) T cells, which contain Tr1 cells, act from the spleen and are key to the maintenance of long-term tolerance.
8594 23878307 CD28-inducible transcription factor DEC1 is required for efficient autoreactive CD4+ T cell response.
8595 23878307 We show that the transcription factor DEC1 is highly induced in a CD28-dependent manner upon T cell activation, is involved in essential CD4(+) effector T cell functions, and participates in the transcriptional regulation of several T cell activation pathways, including a large group of CD28-regulated genes.
8596 23878307 Antigen-specific, DEC1-deficient CD4(+) T cells have cell-intrinsic defects in survival and proliferation.
8597 23878307 Furthermore, we found that DEC1 is required for the development of experimental autoimmune encephalomyelitis because of its critical role in the production of the proinflammatory cytokines GM-CSF, IFN-γ, and IL-2.
8598 23878307 Thus, we identify DEC1 as a critical transcriptional mediator in the activation of naive CD4(+) T cells that is required for the development of a T cell-mediated autoimmune disease.
8599 23878307 CD28-inducible transcription factor DEC1 is required for efficient autoreactive CD4+ T cell response.
8600 23878307 We show that the transcription factor DEC1 is highly induced in a CD28-dependent manner upon T cell activation, is involved in essential CD4(+) effector T cell functions, and participates in the transcriptional regulation of several T cell activation pathways, including a large group of CD28-regulated genes.
8601 23878307 Antigen-specific, DEC1-deficient CD4(+) T cells have cell-intrinsic defects in survival and proliferation.
8602 23878307 Furthermore, we found that DEC1 is required for the development of experimental autoimmune encephalomyelitis because of its critical role in the production of the proinflammatory cytokines GM-CSF, IFN-γ, and IL-2.
8603 23878307 Thus, we identify DEC1 as a critical transcriptional mediator in the activation of naive CD4(+) T cells that is required for the development of a T cell-mediated autoimmune disease.
8604 23878307 CD28-inducible transcription factor DEC1 is required for efficient autoreactive CD4+ T cell response.
8605 23878307 We show that the transcription factor DEC1 is highly induced in a CD28-dependent manner upon T cell activation, is involved in essential CD4(+) effector T cell functions, and participates in the transcriptional regulation of several T cell activation pathways, including a large group of CD28-regulated genes.
8606 23878307 Antigen-specific, DEC1-deficient CD4(+) T cells have cell-intrinsic defects in survival and proliferation.
8607 23878307 Furthermore, we found that DEC1 is required for the development of experimental autoimmune encephalomyelitis because of its critical role in the production of the proinflammatory cytokines GM-CSF, IFN-γ, and IL-2.
8608 23878307 Thus, we identify DEC1 as a critical transcriptional mediator in the activation of naive CD4(+) T cells that is required for the development of a T cell-mediated autoimmune disease.
8609 23878307 CD28-inducible transcription factor DEC1 is required for efficient autoreactive CD4+ T cell response.
8610 23878307 We show that the transcription factor DEC1 is highly induced in a CD28-dependent manner upon T cell activation, is involved in essential CD4(+) effector T cell functions, and participates in the transcriptional regulation of several T cell activation pathways, including a large group of CD28-regulated genes.
8611 23878307 Antigen-specific, DEC1-deficient CD4(+) T cells have cell-intrinsic defects in survival and proliferation.
8612 23878307 Furthermore, we found that DEC1 is required for the development of experimental autoimmune encephalomyelitis because of its critical role in the production of the proinflammatory cytokines GM-CSF, IFN-γ, and IL-2.
8613 23878307 Thus, we identify DEC1 as a critical transcriptional mediator in the activation of naive CD4(+) T cells that is required for the development of a T cell-mediated autoimmune disease.
8614 23878314 CCL22-producing CD8α- myeloid dendritic cells mediate regulatory T cell recruitment in response to G-CSF treatment.
8615 23878314 We demonstrate in this study that the adoptive transfer of CD11c(high)CD8α(-) DCs isolated from pegylated G-CSF (pegG-CSF) recipients, but not that of other DC subtypes, enhanced the pancreatic recruitment of CD4(+)CD25(+)Foxp3(+) Tregs, which generated increased amounts of TGF-β.
8616 23878314 PegG-CSF was more efficient at enhancing the synthesis of CCL22 by CD11c(high)CD8α(-) DCs from the pancreatic lymph nodes compared with those from the spleen.
8617 23878314 These data assign a key role to CD8α(-) DCs and CCL22 in Treg recruitment in the protection of NOD mice against type 1 diabetes following the treatment with G-CSF.
8618 23890479 Sitagliptin is a dipeptidyl peptidase IV (DPP-IV) inhibitor that exerts an anti-hyperglycaemic effect by preventing degradation of glucagon-like peptide 1 with subsequent β-cell stimulation and potential regeneration.
8619 23890479 While compared to diabetic controls sitagliptin prevented increase of the CD8+/CD4+ ratio in pancreatic nodes after four weeks (0.443 ± 0.067 vs. 0.544 ± 0.131; P < 0.05), the population of Tregs in lymph nodes increased from day 0 to 28 in both treated and non-treated diabetic groups (8 ± 1.76 vs. 13.45 ± 5.07 % and 8 ± 1.76 vs. 13.19 ± 5.58 %, respectively).
8620 23899994 Pam3CSK(4) enhanced beta cell loss and diabetogenesis: the roles of IFN-gamma and IL-17.
8621 23899994 FACS analysis of isolated pancreatic lymph node cells revealed significant increased number of macrophages, dendritic cells, CD4(+) TNF-α(+), CD4(+) IFN-γ(+) and most significantly, CD4(+) IL-17(+) and reduced number of CD25(+)Fox p3(+) T cells after Pam3CSK4 treatment.
8622 23925934 Here, using tetramer analysis, we investigated how oral delivery of CTB fused to two CD4(+) T-cell epitopes, the BDC-2.5 T-cell 2.5 mi mimotope and glutamic acid decarboxylase (GAD) 286-300, affected diabetogenic CD4(+) T cells in nonobese diabetic (NOD) mice.
8623 23927943 Impaired CD4+ and T-helper 17 cell memory response to Streptococcus pneumoniae is associated with elevated glucose and percent glycated hemoglobin A1c in Mexican Americans with type 2 diabetes mellitus.
8624 23927943 Measurement of specific subsets indicated that those with diabetes had, low intracellular levels of interleukin (IL)-17, and lower pathogen-specific memory CD4+ and IL-17+ cell numbers.
8625 23927943 Impaired CD4+ and T-helper 17 cell memory response to Streptococcus pneumoniae is associated with elevated glucose and percent glycated hemoglobin A1c in Mexican Americans with type 2 diabetes mellitus.
8626 23927943 Measurement of specific subsets indicated that those with diabetes had, low intracellular levels of interleukin (IL)-17, and lower pathogen-specific memory CD4+ and IL-17+ cell numbers.
8627 23928796 Circulating primary CD4(+) or CD8(+) T cells were quantified with 5-color flow cytometry.
8628 23928796 Serum IL-22 and IL-17 levels were examined by ELISA.
8629 23928796 Serum autoantibodies were measured by radio-binding assays, using (35)S-labeled glutamic acid decarboxylase-65 (GAD65), protein tyrosine phosphatase-2 (IA-2), and zinc transporter 8 (ZnT8).
8630 23928796 However, we did not find any correlation between IL-17 and IL-22 in sera.
8631 23929911 A fine cytometric analysis was designed for their characterization, using a panel of markers including FOXP3, CTLA4, glucocorticoid-induced TNFR family related (GITR) and CD127.
8632 23929911 The frequency of peripheral CD4(+)CD25(hi) T(reg) cells was similar between samples.
8633 23939393 STAT4 deficiency reduces obesity-induced insulin resistance and adipose tissue inflammation.
8634 23939393 STAT4 has a prominent role in mediating interleukin-12-induced T-helper cell type 1 lineage differentiation.
8635 23939393 We sought to determine the role of STAT4 in AT inflammation in obesity-induced insulin resistance.
8636 23939393 We have found that STAT4(-/-)C57Bl6/J mice develop high-fat diet-induced obesity (DIO) similar to wild-type controls, but that they have significantly improved insulin sensitivity and better glucose tolerance.
8637 23939393 Using flow cytometry and real-time PCR, we show that STAT4(-/-) mice with DIO produce significantly reduced numbers of inflammatory cytokines and chemokines in adipocytes, have reduced numbers of CD8(+) cells, and display increased alternative (M2) macrophage polarization.
8638 23939393 CD8(+) cells, but not CD4(+) cells, from STAT4(-/-) mice displayed reduced in vitro migration.
8639 23939393 Also, we found that adipocyte inflammation is reduced and insulin signaling is improved in STAT4(-/-) mice with DIO.
8640 23939393 We have identified STAT4 as a key contributor to insulin resistance and AT inflammation in DIO.
8641 23939393 Targeting STAT4 activation could be a novel approach to reducing AT inflammation and insulin resistance in obesity.
8642 23974926 In vitro assays suggested that CD137 deficiency had a limited effect on the suppressive function of CD4(+)CD25(+) regulatory T-cells (Tregs).
8643 23981600 In a cohort of patients aged 60 years or older with excellent antiretroviral therapy adherence, correlates to cognitive impairment were apolipoprotein (Apo) E4 genotype and a novel measure of the effectiveness of antiretroviral drugs in monocytes, the monocyte efficacy (ME) score, with trend associations for diabetes and nadir CD4+ cell count.
8644 23987037 After CCT there are noted the inhibition of predominantly cellular link of immunity, accompanied by reduction of the CD3+ lymphocytes quantity, as well as lymphocytes of the main subpopulations CD4+ and CD8+, CD16+, reduction of the neutrophils phagocytic activity, a complement titer enhancement.
8645 24016298 Fluorescent-labelled antibodies to CD3, CD4 and CD8 cell marker proteins were utilized to determine proliferative responses of CD3, CD4 and CD8 T cells.
8646 24016298 PEP treatment had no significant effect on CD8 T cell reactivity to the peptic-trytic digest of wheat gluten.