# |
PMID |
Sentence |
1 |
3487504
|
B10.A(5R) mice bearing nonresponder MHC class I antigen in the D and K regions show no anti-NP Tc responses, however they do show a strong A-virus cross-reactive anti-influenza cytotoxicity.
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2 |
8717384
|
While this process can lead to the development of neutralizing antibody responses recognizing authentic protein conformations, in vivo antigen production also results in epitope presentation via the MHC class I antigen processing pathway, leading to the elicitation of cytotoxic cellular immune responses.
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3 |
9300034
|
These results illustrate that Pr55gag VLPs provide a safe and effective means of enhancing neutralizing humoral responses to particle-entrapped gp120 proteins and are also capable of delivering these proteins to the MHC class I antigen processing and presentation pathway.
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4 |
9371814
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Mice immunized with heat shock proteins (hsps) isolated from mouse tumor cells (donor cells) produce CD8 cytotoxic T lymphocytes (CTL) that recognize donor cell peptides in association with the major histocompatibility complex (MHC) class I proteins of the responding mouse.
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5 |
9371814
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The CTL are induced apparently because peptides noncovalently associated with the isolated hsp molecules can enter the MHC class I antigen processing pathway of professional antigen-presenting cells.
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6 |
9371814
|
Because large protein fragments or whole proteins serving as fusion partners can be cleaved into short peptides in the MHC class I processing pathway, hsp fusion proteins of the type described here are promising candidates for vaccines aimed at eliciting CD8 CTL in populations of MHC-disparate individuals.
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7 |
9807734
|
Anchor residues in cytotoxic T-lymphocyte (CTL) epitope-bearing peptides are buried deep in the major histocompatibility complex (MHC) class I antigen-presenting groove and are essential for binding to MHC class I molecules.
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8 |
9816214
|
Specific CD8(+) CTL recognition of melanoma requires expression of MHC class I molecules as well as melanoma-associated peptide epitopes.
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9 |
9816214
|
Stable MHC class I cell surface expression requires delivery of cytosolic peptides into the endoplasmic reticulum by the peptide transporter molecules TAP1 and TAP2, with peptides subsequently transported to the cell surface in complexes containing MHC class I heavy chain and beta2-microglobulin.
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10 |
9816214
|
We have evaluated a series of mechanisms resulting in MHC class I down-regulation in a human melanoma cell line, Mz18, typed as HLA-A2(+), A3(+), B7(+), B57(+), Cw1(+), and Cw6(+) by genomic PCR analysis.
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11 |
9816214
|
The melanoma cell line Mz18 exhibits a global down-regulation of MHC class I heavy chain transcripts; beta2-microglobulin; the proteasome subunits LMP2/7, involved in generating cytosolic peptide fragments; and the peptide transporter molecules TAP1 and TAP2, involved in peptide transport from the cytosol into the endoplasmic reticulum.
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12 |
9816214
|
IFN-gamma treatment of Mz18 melanoma cells leads to up-regulation of LMP2/7 and TAP1/2, as well as to up-regulation of HLA-B and HLA-C MHC loci alleles, but not HLA-A2 or HLA-A3.
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13 |
9816214
|
Melanoma peptides could only be presented and recognized by CTLs if the HLA-A2-transfected Mz18 cell line was first treated with IFN-gamma, thereby restoring LMP2/7 and TAP1/2 expression and function.
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14 |
9816214
|
Because several melanoma antigens recognized by T cells have been reported to be presented by HLA-A2 (MART-1/Melan-A, tyrosinase, gp100, and MAGE-3), the loss of HLA-A2 molecules may represent an important mechanism by which many melanomas evade immune recognition.
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15 |
9816214
|
These findings suggest that patients entering clinical trials for immunotherapy with melanoma vaccines should be carefully examined for tumor cell allelic MHC class I loss and whether such MHC class I antigen down-regulation can be restored by cytokines.
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16 |
9848223
|
Major histocompatibility complex (MHC) class I antigen is a potent stimulus for alloimmune responses and is the principal immunologic target mediating acute cellular rejection of allografts.
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17 |
9848223
|
Specifically, coimmunization with IL-10 cDNA abrogated immunity to allo-MHC class I, while coimmunization with GM-CSF cDNA enhanced it.
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18 |
9930305
|
In this study we describe the generation and characterization of replication incompetent herpes simplex virus type 1 (HSV-1) vectors (HX86Z or HX86G) carrying distinct and independently regulated expression cassettes for five transgenes (hIL-2, hGM-CSF, hB7.1, HSV-tk and lacZ or hIFN gamma).
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19 |
9930305
|
Deletion of the immediate--early genes ICP4, ICP22 and ICP27 substantially reduced vector cytotoxicity, prevented early and late viral gene expression and left intact MHC class I antigen expression.
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20 |
10065631
|
These microbes primarily stimulate CD4 T-cells via antigen presentation through MHC class II molecules.
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21 |
10065631
|
This 'cytoplasmic' pathogen is controlled by CD8 T-cells through MHC class I antigen presentation.
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22 |
10065631
|
Some bacterial pathogens such as Mycobacterium tuberculosis presumably remain in the phagosome but apparently 'perforate' the phagosomal membrane and thus stimulate both CD4 and CD8 T-cells.
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23 |
10065631
|
Such constructs are capable of introducing antigens into the MHC class II and MHC class I pathway, resulting in stimulation of both CD4 and CD8 T-cells.
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24 |
10611973
|
Mechanisms of viral interference with MHC class I antigen processing and presentation.
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25 |
10779556
|
We demonstrated that peripheral T cell tolerance toward murine melanoma self-antigens gp100 and TRP-2 can be broken by an autologous oral DNA vaccine containing the murine ubiquitin gene fused to minigenes encoding peptide epitopes gp100(25-33) and TRP-2(181-188).
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26 |
10779556
|
These epitopes contain dominant anchor residues for MHC class I antigen alleles H-2D(b) and H-2K(b), respectively.
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27 |
10779556
|
Tumor-protective immunity was mediated by MHC class I antigen-restricted CD8(+) T cells that secreted T(H)1 cytokine IFN-gamma and induced tumor rejection and growth suppression after a lethal challenge with B16G3. 26 murine melanoma cells.
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28 |
10779556
|
We demonstrated that peripheral T cell tolerance toward murine melanoma self-antigens gp100 and TRP-2 can be broken by an autologous oral DNA vaccine containing the murine ubiquitin gene fused to minigenes encoding peptide epitopes gp100(25-33) and TRP-2(181-188).
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29 |
10779556
|
These epitopes contain dominant anchor residues for MHC class I antigen alleles H-2D(b) and H-2K(b), respectively.
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30 |
10779556
|
Tumor-protective immunity was mediated by MHC class I antigen-restricted CD8(+) T cells that secreted T(H)1 cytokine IFN-gamma and induced tumor rejection and growth suppression after a lethal challenge with B16G3. 26 murine melanoma cells.
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31 |
10856797
|
Because of the resistance of cancer patients to immunization, ex vivo immunization of macrophage/dendritic cells was examined using oxidized mannan MUC1 to target the mannose receptor and the MHC Class I antigen presentation pathway.
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32 |
11163665
|
The success of this approach depends on the ability to direct the CTL epitopes to the MHC class I antigen presentation pathway.
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33 |
11222495
|
Treatment of human cancers with an inherent antigen-processing defect due to a loss of peptide transporters (TAP-1 and TAP-2) and/or MHC class I antigen expression remains a considerable challenge.
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34 |
11222495
|
There is now an increasing realization that tumor cells with down-regulated expression of TAP and/or MHC class I antigens display strong resistance to cytotoxic T lymphocyte (CTL)-mediated immune control, and often fail to respond to the conventional immunotherapeutic protocols based on active immunization with tumor-associated epitopes (TAE) or adoptive transfer of tumor-specific T cells.
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35 |
11222495
|
In the present study, we describe a novel approach based on immunization with either genetically modified tumor cells or naked DNA vectors encoding TAE fused to an endoplasmic reticulum (ER) signal sequence (ER-TAE) which affords protection against challenge by melanoma cells with down-regulated expression of TAP-1/2 and MHC class I antigens.
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36 |
11222495
|
These observations provide a new strategy in anti-cancer vaccine design that allows activation of a highly effective and well-defined CTL response against tumors with down-regulated expression of TAP and MHC class I antigens.
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37 |
11507070
|
We demonstrate that a mouse-human chimeric anti-ganglioside GD2-interleukin (IL)-2 fusion protein (ch14.18-IL2) substantially amplifies tumor-protective immunity against murine melanoma induced by an autologous oral DNA vaccine containing the murine ubiquitin gene fused to murine melanoma peptide epitopes gp100(25-35) and TRP-2(181-188).
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38 |
11507070
|
The tumor-protective immunity was mediated by MHC class I antigen- restricted CD8(+) T cells together with CD4(+) T cell help, which was required only for tumor cell killing in the effector phase of the immune response.
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39 |
11507070
|
The immunological mechanisms involved in this antitumor effect were suggested by a decisively increased secretion of tumor necrosis factor alpha TNFTnTNa and IFN-gamma from CD4(+) and CD8(+) T cells and a markedly up-regulated expression on CD8(+) T cells of high-affinity IL-2 receptor alpha chain (CD25), costimulatory molecule CD28, and adhesion molecule lymphocyte function-associated antigen-2 (LFA-2/CD2).
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40 |
11672905
|
This vaccine, delivered by oral gavage with an attenuated strain of Salmonella typhimurium (SL7207), and boosted with an antibody-IL2 fusion protein, induced tumor-protective immunity mediated by MHC class I antigen-restricted CD8(+) T cells, resulting in eradication of subcutaneous tumors in 100% of mice and prevention of experimental pulmonary metastases in 75% of experimental animals.
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41 |
11672905
|
Both CTL and antigen-presenting dendritic cells were activated as indicated by a decisive increase in their respective activation markers CD2, CD25, CD28 as well as CD48 and CD80.
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42 |
11899255
|
The role of the ubiquitin-proteasome pathway in MHC class I antigen processing: implications for vaccine design.
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43 |
11899255
|
By selective protein degradation, proteasomes regulate many cellular processes including MHC class I antigen processing.
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44 |
11899255
|
In this review, we will introduce the ubiquitin-proteasome system and summarize recent findings regarding the role of the IFNgamma-inducible proteasome subunits and proteasome regulators in antigen processing.
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45 |
11899255
|
The availability of such programs as well as a general insight into the proteasome mediated steps in MHC class I antigen processing provides us with a rational basis for the design of new antiviral and anticancer T cell vaccines.
|
46 |
11899255
|
The role of the ubiquitin-proteasome pathway in MHC class I antigen processing: implications for vaccine design.
|
47 |
11899255
|
By selective protein degradation, proteasomes regulate many cellular processes including MHC class I antigen processing.
|
48 |
11899255
|
In this review, we will introduce the ubiquitin-proteasome system and summarize recent findings regarding the role of the IFNgamma-inducible proteasome subunits and proteasome regulators in antigen processing.
|
49 |
11899255
|
The availability of such programs as well as a general insight into the proteasome mediated steps in MHC class I antigen processing provides us with a rational basis for the design of new antiviral and anticancer T cell vaccines.
|
50 |
11899255
|
The role of the ubiquitin-proteasome pathway in MHC class I antigen processing: implications for vaccine design.
|
51 |
11899255
|
By selective protein degradation, proteasomes regulate many cellular processes including MHC class I antigen processing.
|
52 |
11899255
|
In this review, we will introduce the ubiquitin-proteasome system and summarize recent findings regarding the role of the IFNgamma-inducible proteasome subunits and proteasome regulators in antigen processing.
|
53 |
11899255
|
The availability of such programs as well as a general insight into the proteasome mediated steps in MHC class I antigen processing provides us with a rational basis for the design of new antiviral and anticancer T cell vaccines.
|
54 |
12072267
|
Candidate vaccine antigens for cellular immune responses should therefore be analysed in the context of MHC class I antigen presentation.
|
55 |
12461082
|
HLA-E-dependent presentation of Mtb-derived antigen to human CD8+ T cells.
|
56 |
12461082
|
Recently, we have described human, Mtb-specific CD8+ cells that are neither HLA-A, B, or C nor group 1 CD1 restricted, and have found that these cells comprise the dominant CD8+ T cell response in latently infected individuals.
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57 |
12477426
|
Unfortunately, administration of soluble proteins alone generally does not induce CD8+ T cells presumably because antigen derived peptides are not introduced into the major histocompatibility complex (MHC) class I antigen presentation pathway.
|
58 |
12750257
|
The linkage of gamma-tubulin to E7-targeted antigen to centrosomal compartments, resulted in enhanced MHC class I presentation of E7, and led to a marked increase in the number of E7-specific CD8(+) T-cell precursors as well as a potent CD4-independent antitumor effect against an E7-expressing tumor cell line, TC-1.
|
59 |
12750257
|
Our data suggest that the centrosome may be an important locus for MHC class I antigen processing and that targeting antigen to the centrosome can improve DNA vaccine potency.
|
60 |
12782590
|
Immune-splenic lymphocytes when stimulated in vitro with 3H1 or CEA, showed increased proliferative CD4(+) Th1 type T-cell response and secreted significantly high levels of Th1 cytokines [IFN-gamma, interleukin (IL)-2] and low levels of Th2 cytokines (IL-4, IL-10).
|
61 |
12782590
|
This vaccine also induced MHC class I antigen-restricted CD8(+) T-cell responses.
|
62 |
12782590
|
The up-regulation of activation markers CD69 and CD25 on CD8(+) CTLs correlated with antigen-specific strong CTL responses in vitro.
|
63 |
12874227
|
Analysis of HLA-E peptide-binding specificity and contact residues in bound peptide required for recognition by CD94/NKG2.
|
64 |
12874227
|
The MHC class Ib molecule HLA-E is the primary ligand for CD94/NKG2A-inhibitory receptors expressed on NK cells, and there is also evidence for TCR-mediated recognition of this molecule.
|
65 |
12874227
|
Experiments with HLA-E tetramers bearing peptides substituted at nonanchor positions demonstrated that P5 and P8 are primary contact residues for interaction with CD94/NKG2 receptors.
|
66 |
12874227
|
A conservative replacement of Arg for Lys at P5 completely abrogated binding to CD94/NKG2.
|
67 |
12874227
|
Despite conservation of peptide-binding specificity in HLA-E and Qa-1, cross-species tetramer-staining experiments demonstrated that the interaction surfaces on CD94/NKG2 and the class Ib ligands have diverged between primates and rodents.
|
68 |
12874227
|
Analysis of HLA-E peptide-binding specificity and contact residues in bound peptide required for recognition by CD94/NKG2.
|
69 |
12874227
|
The MHC class Ib molecule HLA-E is the primary ligand for CD94/NKG2A-inhibitory receptors expressed on NK cells, and there is also evidence for TCR-mediated recognition of this molecule.
|
70 |
12874227
|
Experiments with HLA-E tetramers bearing peptides substituted at nonanchor positions demonstrated that P5 and P8 are primary contact residues for interaction with CD94/NKG2 receptors.
|
71 |
12874227
|
A conservative replacement of Arg for Lys at P5 completely abrogated binding to CD94/NKG2.
|
72 |
12874227
|
Despite conservation of peptide-binding specificity in HLA-E and Qa-1, cross-species tetramer-staining experiments demonstrated that the interaction surfaces on CD94/NKG2 and the class Ib ligands have diverged between primates and rodents.
|
73 |
12874227
|
Analysis of HLA-E peptide-binding specificity and contact residues in bound peptide required for recognition by CD94/NKG2.
|
74 |
12874227
|
The MHC class Ib molecule HLA-E is the primary ligand for CD94/NKG2A-inhibitory receptors expressed on NK cells, and there is also evidence for TCR-mediated recognition of this molecule.
|
75 |
12874227
|
Experiments with HLA-E tetramers bearing peptides substituted at nonanchor positions demonstrated that P5 and P8 are primary contact residues for interaction with CD94/NKG2 receptors.
|
76 |
12874227
|
A conservative replacement of Arg for Lys at P5 completely abrogated binding to CD94/NKG2.
|
77 |
12874227
|
Despite conservation of peptide-binding specificity in HLA-E and Qa-1, cross-species tetramer-staining experiments demonstrated that the interaction surfaces on CD94/NKG2 and the class Ib ligands have diverged between primates and rodents.
|
78 |
12874227
|
Analysis of HLA-E peptide-binding specificity and contact residues in bound peptide required for recognition by CD94/NKG2.
|
79 |
12874227
|
The MHC class Ib molecule HLA-E is the primary ligand for CD94/NKG2A-inhibitory receptors expressed on NK cells, and there is also evidence for TCR-mediated recognition of this molecule.
|
80 |
12874227
|
Experiments with HLA-E tetramers bearing peptides substituted at nonanchor positions demonstrated that P5 and P8 are primary contact residues for interaction with CD94/NKG2 receptors.
|
81 |
12874227
|
A conservative replacement of Arg for Lys at P5 completely abrogated binding to CD94/NKG2.
|
82 |
12874227
|
Despite conservation of peptide-binding specificity in HLA-E and Qa-1, cross-species tetramer-staining experiments demonstrated that the interaction surfaces on CD94/NKG2 and the class Ib ligands have diverged between primates and rodents.
|
83 |
12951870
|
The illustrated clinical and experimental results demonstrate the strong relationship between the MHC class I antigen HLA-B27 and synovial CD8+ T cells with specificity for bacterial and possible self-antigen in SpA.
|
84 |
12963273
|
CD4+, CD8+, and gammadelta T cells were analyzed before and after immunization for BRSV-specific in vitro recall responses, as evaluated by CD25 upregulation measured by flow cytometry.
|
85 |
12963273
|
Inactivated vaccine also primed each T cell population for significant antigen-driven CD25 upregulation, including responses by CD4+ and gammadelta T cells that were stronger and longer-lasting than those primed by MLV.
|
86 |
12963273
|
In summary, the data indicate that balanced BRSV-specific T cell responses can be induced by inactivated, as well as modified-live, conventional vaccines, which may implicate an alternative pathway of MHC class I antigen presentation.
|
87 |
14534734
|
Altered MHC class I antigen expression involves total loss, loss of haplotype, locus downregulation, allelic loss or downregulation, and combinations.
|
88 |
14534734
|
Despite the MHC class I molecule deficiency and the resulting absence of the CD8+ T cell-mediated immunity, the tumour hosts were found to be capable of being immunized against MHC class I- tumours.
|
89 |
14695218
|
MICA/NKG2D-mediated immunogene therapy of experimental gliomas.
|
90 |
14695218
|
Tumor cells expressing ligands of the activating immunoreceptor NKG2D stimulate tumor immunity mediated by natural killer (NK), gammadelta T, and CD8(+) T cells.
|
91 |
14695218
|
We report that human glioma cells express the NKG2D ligands MICA, MICB, and members of the UL16-binding protein family constitutively.
|
92 |
14695218
|
However, glioma cells resist NK cell cytolysis because of high MHC class I antigen expression.
|
93 |
15122754
|
HCs upregulate surface expression of major histocompatibility complex (MHC) class I molecules and CD1d but not MHC class II molecules Qa-1, CD80, CD86, CD54, or CD95; in addition, they expressed/secreted interleukin (IL)-10 and IL-4 but not IL-1, IL-6, IL-13, interferon (IFN)-gamma, tumor necrosis factor (TNF), IL-4, or IL-27 (i.e., they acquire the HC* phenotype).
|
94 |
15122754
|
HCs* (but not HCs) induced specific activation, proliferation, and IFN-gamma, TNF, and IL-13 release of cocultured naïve CD8(+) T cells.
|
95 |
15122754
|
Only recently activated CD8(+) T blasts (but not recently activated CD4(+) T blasts or activated cells of the innate immune system, including natural killer T [NKT] cells) induced the HC* phenotype that is prominent from day 10 to day 20 postvaccination (i.e., time points at which peak numbers of recently primed CD8(+) T blasts are found in the liver).
|
96 |
15494539
|
Identification of a human HLA-E-restricted CD8+ T cell subset in volunteers immunized with Salmonella enterica serovar Typhi strain Ty21a typhoid vaccine.
|
97 |
15494539
|
Typhi-infected targets regardless of whether they share classical HLA class I molecules with them, by a FAS-independent, granule-dependent mechanism, as evidenced by induction of granzyme B release and the blocking effects of concanamycin and strontium ions.
|
98 |
15494539
|
The expression of HLA-E Ags, but not CD1-a, -b, or -c, on the membrane of S.
|
99 |
15494539
|
Typhi Ags via HLA-E could stimulate IFN-gamma production.
|
100 |
15494539
|
Typhi GroEL HLA-E binding motifs.
|
101 |
15494539
|
These results demonstrate that HLA-E binds nonamer peptides derived from bacterial proteins and trigger CD8+-mediated lysis and IFN-gamma production when exposed to infected targets, raising the possibility that this novel effector mechanism might contribute to host defense against intracellular bacterial infections.
|
102 |
15494539
|
Identification of a human HLA-E-restricted CD8+ T cell subset in volunteers immunized with Salmonella enterica serovar Typhi strain Ty21a typhoid vaccine.
|
103 |
15494539
|
Typhi-infected targets regardless of whether they share classical HLA class I molecules with them, by a FAS-independent, granule-dependent mechanism, as evidenced by induction of granzyme B release and the blocking effects of concanamycin and strontium ions.
|
104 |
15494539
|
The expression of HLA-E Ags, but not CD1-a, -b, or -c, on the membrane of S.
|
105 |
15494539
|
Typhi Ags via HLA-E could stimulate IFN-gamma production.
|
106 |
15494539
|
Typhi GroEL HLA-E binding motifs.
|
107 |
15494539
|
These results demonstrate that HLA-E binds nonamer peptides derived from bacterial proteins and trigger CD8+-mediated lysis and IFN-gamma production when exposed to infected targets, raising the possibility that this novel effector mechanism might contribute to host defense against intracellular bacterial infections.
|
108 |
15494539
|
Identification of a human HLA-E-restricted CD8+ T cell subset in volunteers immunized with Salmonella enterica serovar Typhi strain Ty21a typhoid vaccine.
|
109 |
15494539
|
Typhi-infected targets regardless of whether they share classical HLA class I molecules with them, by a FAS-independent, granule-dependent mechanism, as evidenced by induction of granzyme B release and the blocking effects of concanamycin and strontium ions.
|
110 |
15494539
|
The expression of HLA-E Ags, but not CD1-a, -b, or -c, on the membrane of S.
|
111 |
15494539
|
Typhi Ags via HLA-E could stimulate IFN-gamma production.
|
112 |
15494539
|
Typhi GroEL HLA-E binding motifs.
|
113 |
15494539
|
These results demonstrate that HLA-E binds nonamer peptides derived from bacterial proteins and trigger CD8+-mediated lysis and IFN-gamma production when exposed to infected targets, raising the possibility that this novel effector mechanism might contribute to host defense against intracellular bacterial infections.
|
114 |
15494539
|
Identification of a human HLA-E-restricted CD8+ T cell subset in volunteers immunized with Salmonella enterica serovar Typhi strain Ty21a typhoid vaccine.
|
115 |
15494539
|
Typhi-infected targets regardless of whether they share classical HLA class I molecules with them, by a FAS-independent, granule-dependent mechanism, as evidenced by induction of granzyme B release and the blocking effects of concanamycin and strontium ions.
|
116 |
15494539
|
The expression of HLA-E Ags, but not CD1-a, -b, or -c, on the membrane of S.
|
117 |
15494539
|
Typhi Ags via HLA-E could stimulate IFN-gamma production.
|
118 |
15494539
|
Typhi GroEL HLA-E binding motifs.
|
119 |
15494539
|
These results demonstrate that HLA-E binds nonamer peptides derived from bacterial proteins and trigger CD8+-mediated lysis and IFN-gamma production when exposed to infected targets, raising the possibility that this novel effector mechanism might contribute to host defense against intracellular bacterial infections.
|
120 |
15494539
|
Identification of a human HLA-E-restricted CD8+ T cell subset in volunteers immunized with Salmonella enterica serovar Typhi strain Ty21a typhoid vaccine.
|
121 |
15494539
|
Typhi-infected targets regardless of whether they share classical HLA class I molecules with them, by a FAS-independent, granule-dependent mechanism, as evidenced by induction of granzyme B release and the blocking effects of concanamycin and strontium ions.
|
122 |
15494539
|
The expression of HLA-E Ags, but not CD1-a, -b, or -c, on the membrane of S.
|
123 |
15494539
|
Typhi Ags via HLA-E could stimulate IFN-gamma production.
|
124 |
15494539
|
Typhi GroEL HLA-E binding motifs.
|
125 |
15494539
|
These results demonstrate that HLA-E binds nonamer peptides derived from bacterial proteins and trigger CD8+-mediated lysis and IFN-gamma production when exposed to infected targets, raising the possibility that this novel effector mechanism might contribute to host defense against intracellular bacterial infections.
|
126 |
15542368
|
Antigen recognition by cytotoxic CD8 T cells is dependent upon a number of critical steps in MHC class I antigen processing including proteosomal cleavage, TAP transport into the endoplasmic reticulum, and MHC class I binding.
|
127 |
15710457
|
Corticosterone impairs MHC class I antigen presentation by dendritic cells via reduction of peptide generation.
|
128 |
15843436
|
We improved an existing vaccine platform based on immunopotentiating reconstituted influenza virosomes (IRIVs) for efficient delivery of peptide epitopes to the MHC class I antigen presentation pathway.
|
129 |
16044253
|
Splenocytes obtained from 3H1-CpG-immunized mice showed an increased proliferative CD4(+) Th1-type T-cell response when stimulated in vitro with 3H1 or CEA and secreted elevated levels of Th1 cytokines (IL-2, IFN-gamma).
|
130 |
16044253
|
This vaccine also induced MHC class I antigen-restricted CD8(+) T-cell responses.
|
131 |
16389301
|
We hypothesize that over-expression of transporters associated with antigen processing (TAP1 and TAP2), components of the major histocompatibility complex (MHC) class I antigen-processing pathway, enhances antigen-specific cytotoxic activity in response to viral infection.
|
132 |
16389301
|
An expression system using recombinant vaccinia virus (VV) was used to over-express human TAP1 and TAP2 (VV-hTAP1,2) in normal mice.
|
133 |
16389301
|
Mechanistically, the total MHC class I antigen surface expression and the cross-presentation mechanism in spleen-derived dendritic cells was augmented by over-expression of TAP.
|
134 |
16389301
|
We hypothesize that over-expression of transporters associated with antigen processing (TAP1 and TAP2), components of the major histocompatibility complex (MHC) class I antigen-processing pathway, enhances antigen-specific cytotoxic activity in response to viral infection.
|
135 |
16389301
|
An expression system using recombinant vaccinia virus (VV) was used to over-express human TAP1 and TAP2 (VV-hTAP1,2) in normal mice.
|
136 |
16389301
|
Mechanistically, the total MHC class I antigen surface expression and the cross-presentation mechanism in spleen-derived dendritic cells was augmented by over-expression of TAP.
|
137 |
17582562
|
Typhi oral vaccines include lymphoproliferation; production of type 1 cytokines (e.g., interferon- gamma and tumor necrosis factor- alpha ); and classical major histocompatibility complex (MHC) class Ia-restricted and novel, nonclassical MHC class Ib (human leukocyte antigen [HLA]-E)-restricted CD8(+) cytotoxic T cell responses.
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138 |
17786443
|
Here, we tested our hypothesis that suppression of TAMs can be achieved in syngeneic BALB/c mice with oral minigene vaccines against murine MHC class I antigen epitopes of Legumain, an asparaginyl endopeptidase and a member of the C13 family of cystine proteases which is overexpressed on TAMs in the tumor stroma.
|
139 |
17786443
|
We demonstrated that the Legumain minigene vaccine provided effective protection against tumor cell challenge by inducing a specific CD8+ T-cell response against Legumain+ TAMs in our breast tumor model.
|
140 |
17875682
|
A large proportion of human cancers show deficiencies in the MHC class I antigen-processing machinery.
|
141 |
18406420
|
To study the MHC class I antigen-processing pathway, the protein antigen of interest has to be expressed inside the cells.
|
142 |
18406420
|
Mouse fibroblast and RMA cells were able to properly process OVA protein, and OVA-derived peptide OVA(258-265) (or SIINFEKL) was successfully presented via the MHC class I molecule (K(b)) to SIINFEKL-K(b)-specific T cell hybridoma B3Z.
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143 |
18406420
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As expected, delivery of OVA protein into RMA-S, a cell line with a deficiency in MHC class I antigen processing due to a TAP defect, failed to present the SIINFEKL epitope to B3Z.
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144 |
18406420
|
To study the MHC class I antigen-processing pathway, the protein antigen of interest has to be expressed inside the cells.
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145 |
18406420
|
Mouse fibroblast and RMA cells were able to properly process OVA protein, and OVA-derived peptide OVA(258-265) (or SIINFEKL) was successfully presented via the MHC class I molecule (K(b)) to SIINFEKL-K(b)-specific T cell hybridoma B3Z.
|
146 |
18406420
|
As expected, delivery of OVA protein into RMA-S, a cell line with a deficiency in MHC class I antigen processing due to a TAP defect, failed to present the SIINFEKL epitope to B3Z.
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147 |
18585419
|
The aim of this research was to identify subunit immunogens that can generate enhanced CD8 T cell and TH1 responses against Mycobacterium tuberculosis.
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148 |
18585419
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To further enhance the CD8 T cell and TH1 responses, a hybrid protein, H32, was constructed by combining the nucleotide sequences encoding the MHC class I antigen-rich segment of Rv1986c and the entire Rv3875 sequence.
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149 |
18645033
|
We identified three novel mouse TH (mTH3) derived peptides with high predicted binding affinity to MHC class I antigen H2-K(k) according to the prediction program SYFPEITHI and computer modeling of epitopes into the MHC class I antigen binding groove.
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150 |
18645033
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This effect was clearly dependent on ubiquitin and high affinity of the mTH epitopes to MHC class I antigens.
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151 |
18820911
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HER-2/neu mediated down-regulation of MHC class I antigen processing prevents CTL-mediated tumor recognition upon DNA vaccination in HLA-A2 transgenic mice.
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152 |
18820911
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Subsequently we discovered that HER-2 transfected tumor cells down-regulated MHC class I antigen expression and exhibited a series of defects in the antigen processing pathway which impaired the capacity to produce and display MHC class I peptide-ligands to specific CTLs.
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153 |
18820911
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Our data demonstrate that HER-2 transfection is associated with defects in the MHC class I presentation pathway, which may be the underlying mechanism behind the inability of CTLs to recognize tumors in this HLA-A2 transgenic model.
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154 |
18820911
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As defective MHC class I presentation may be a common characteristic of HER-2 expressing tumors, vaccines targeting HER-2 should aim at inducing an integrated immune response where also CD4(+) T cells and antibodies are important components.
|
155 |
18820911
|
HER-2/neu mediated down-regulation of MHC class I antigen processing prevents CTL-mediated tumor recognition upon DNA vaccination in HLA-A2 transgenic mice.
|
156 |
18820911
|
Subsequently we discovered that HER-2 transfected tumor cells down-regulated MHC class I antigen expression and exhibited a series of defects in the antigen processing pathway which impaired the capacity to produce and display MHC class I peptide-ligands to specific CTLs.
|
157 |
18820911
|
Our data demonstrate that HER-2 transfection is associated with defects in the MHC class I presentation pathway, which may be the underlying mechanism behind the inability of CTLs to recognize tumors in this HLA-A2 transgenic model.
|
158 |
18820911
|
As defective MHC class I presentation may be a common characteristic of HER-2 expressing tumors, vaccines targeting HER-2 should aim at inducing an integrated immune response where also CD4(+) T cells and antibodies are important components.
|
159 |
19178136
|
Molecular mechanisms of MHC class I-antigen processing: redox considerations.
|
160 |
19178136
|
Major histocompatibility complex (MHC) class I molecules present antigenic peptides to the cell surface for screening by CD8(+) T cells.
|
161 |
19178136
|
Early folding of the MHC class I heavy chain is followed by its association with beta(2)-microglobulin (beta(2)m).
|
162 |
19576942
|
Although incubation of DCs with these EtxB-peptide conjugates as such did not induce DC maturation in vitro MHC class I antigen presentation was much more efficient as compared to peptide alone.
|
163 |
20158470
|
The cytoplasmic location of L. monocytogenes is significant as this potentiates entry of antigens into the MHC Class I antigen processing pathway leading to priming of specific CD8(+) T cell responses.
|
164 |
20195504
|
Mycobacterium tuberculosis peptides presented by HLA-E molecules are targets for human CD8 T-cells with cytotoxic as well as regulatory activity.
|
165 |
20195504
|
CD8(+) T-cells were cytotoxic against target-cells transfected with HLA-E only in the presence of specific peptide.
|
166 |
20195504
|
Our results significantly increase our understanding of the human immune response to Mtb by identification of CD8(+) T-cell responses to novel HLA-E binding peptides of Mtb, which have cytotoxic as well as immunoregulatory activity.
|
167 |
20195504
|
Mycobacterium tuberculosis peptides presented by HLA-E molecules are targets for human CD8 T-cells with cytotoxic as well as regulatory activity.
|
168 |
20195504
|
CD8(+) T-cells were cytotoxic against target-cells transfected with HLA-E only in the presence of specific peptide.
|
169 |
20195504
|
Our results significantly increase our understanding of the human immune response to Mtb by identification of CD8(+) T-cell responses to novel HLA-E binding peptides of Mtb, which have cytotoxic as well as immunoregulatory activity.
|
170 |
20195504
|
Mycobacterium tuberculosis peptides presented by HLA-E molecules are targets for human CD8 T-cells with cytotoxic as well as regulatory activity.
|
171 |
20195504
|
CD8(+) T-cells were cytotoxic against target-cells transfected with HLA-E only in the presence of specific peptide.
|
172 |
20195504
|
Our results significantly increase our understanding of the human immune response to Mtb by identification of CD8(+) T-cell responses to novel HLA-E binding peptides of Mtb, which have cytotoxic as well as immunoregulatory activity.
|
173 |
20442757
|
The immune system is engaged in a constant antigenic surveillance through the Major Histocompatibility Complex (MHC) class I antigen presentation pathway.
|
174 |
20660136
|
Because of the potential importance of HLA-E-restricted CD8(+) responses in resistance to Salmonella infection, we characterized these responses and investigated their kinetics of appearance and persistence in volunteers immunized orally with the licensed attenuated Ty21a strain typhoid vaccine.
|
175 |
20660136
|
An ex vivo multicolor staining panel including antibodies to CD107a and -b, interleukin-2, gamma interferon (IFN-gamma), and tumor necrosis factor alpha (TNF-alpha) was used to functionally assess memory T-cell subsets by flow cytometry.
|
176 |
20660136
|
The majority of HLA-E-restricted CD8(+) cells 28 to 56 days after immunization coexpressed CD107, IFN-gamma, and TNF-alpha, showing characteristic features of multifunctional T cells.
|
177 |
20660136
|
In summary, the multifunctionality and longevity of the HLA-E-restricted CD8 responses observed in this study highlight their significance in adaptive immunity to S.
|
178 |
20660136
|
Finally, this is the first demonstration, in either animals or humans, of the presence of long-term multifunctional HLA-E-restricted CD8(+) cells after immunization.
|
179 |
20660136
|
Because of the potential importance of HLA-E-restricted CD8(+) responses in resistance to Salmonella infection, we characterized these responses and investigated their kinetics of appearance and persistence in volunteers immunized orally with the licensed attenuated Ty21a strain typhoid vaccine.
|
180 |
20660136
|
An ex vivo multicolor staining panel including antibodies to CD107a and -b, interleukin-2, gamma interferon (IFN-gamma), and tumor necrosis factor alpha (TNF-alpha) was used to functionally assess memory T-cell subsets by flow cytometry.
|
181 |
20660136
|
The majority of HLA-E-restricted CD8(+) cells 28 to 56 days after immunization coexpressed CD107, IFN-gamma, and TNF-alpha, showing characteristic features of multifunctional T cells.
|
182 |
20660136
|
In summary, the multifunctionality and longevity of the HLA-E-restricted CD8 responses observed in this study highlight their significance in adaptive immunity to S.
|
183 |
20660136
|
Finally, this is the first demonstration, in either animals or humans, of the presence of long-term multifunctional HLA-E-restricted CD8(+) cells after immunization.
|
184 |
20660136
|
Because of the potential importance of HLA-E-restricted CD8(+) responses in resistance to Salmonella infection, we characterized these responses and investigated their kinetics of appearance and persistence in volunteers immunized orally with the licensed attenuated Ty21a strain typhoid vaccine.
|
185 |
20660136
|
An ex vivo multicolor staining panel including antibodies to CD107a and -b, interleukin-2, gamma interferon (IFN-gamma), and tumor necrosis factor alpha (TNF-alpha) was used to functionally assess memory T-cell subsets by flow cytometry.
|
186 |
20660136
|
The majority of HLA-E-restricted CD8(+) cells 28 to 56 days after immunization coexpressed CD107, IFN-gamma, and TNF-alpha, showing characteristic features of multifunctional T cells.
|
187 |
20660136
|
In summary, the multifunctionality and longevity of the HLA-E-restricted CD8 responses observed in this study highlight their significance in adaptive immunity to S.
|
188 |
20660136
|
Finally, this is the first demonstration, in either animals or humans, of the presence of long-term multifunctional HLA-E-restricted CD8(+) cells after immunization.
|
189 |
20660136
|
Because of the potential importance of HLA-E-restricted CD8(+) responses in resistance to Salmonella infection, we characterized these responses and investigated their kinetics of appearance and persistence in volunteers immunized orally with the licensed attenuated Ty21a strain typhoid vaccine.
|
190 |
20660136
|
An ex vivo multicolor staining panel including antibodies to CD107a and -b, interleukin-2, gamma interferon (IFN-gamma), and tumor necrosis factor alpha (TNF-alpha) was used to functionally assess memory T-cell subsets by flow cytometry.
|
191 |
20660136
|
The majority of HLA-E-restricted CD8(+) cells 28 to 56 days after immunization coexpressed CD107, IFN-gamma, and TNF-alpha, showing characteristic features of multifunctional T cells.
|
192 |
20660136
|
In summary, the multifunctionality and longevity of the HLA-E-restricted CD8 responses observed in this study highlight their significance in adaptive immunity to S.
|
193 |
20660136
|
Finally, this is the first demonstration, in either animals or humans, of the presence of long-term multifunctional HLA-E-restricted CD8(+) cells after immunization.
|
194 |
20975916
|
Development of such inhibitor/vaccines would have to take into consideration the variation in amino acid sequence analyzed in this study as this could determine epitope presentation on MHC class I antigen for afferent immune response.
|
195 |
21378750
|
Hydrophobicity as a driver of MHC class I antigen processing.
|
196 |
21482733
|
The PTAP sequence within the p6 domain of human immunodeficiency virus type 1 Gag regulates its ubiquitination and MHC class I antigen presentation.
|
197 |
21482733
|
Endogenous peptides presented by MHC class I (MHC-I) molecules are mostly derived from de novo synthesized, erroneous proteins, so-called defective ribosomal products (DRiPs), which are rapidly degraded via the ubiquitin-proteasome pathway.
|
198 |
21723900
|
To address this issue, successive steps (attachment, transgene expression, MHC class I antigen presentation and activation of antigen-specific T lymphocytes) involved in induction of immune responses by Ad5-based vectors have been examined in CD8α(+) and CD8α(-) murine DC subsets.
|
199 |
21723900
|
Thus, superior antigen expression and MHC class I display in CD8α(+) DC may contribute to preferred priming of antigen-specific CD8(+) lymphocytes by Ad5-transduced CD8α(+) DC.
|
200 |
22116674
|
Herpes simplex virus protein ICP47, encoded by US12 gene, strongly downregulates major histocompatibility complex (MHC) class-I antigen restricted presentation by blocking transporter associated with antigen processing (TAP) protein.
|
201 |
22116674
|
To decrease viral vector antigenic immunodominance and MHC class-I driven clearance, we engineered recombinant vaccinia viruses (rVV) expressing ICP47 alone (rVV-US12) or together with endoplasmic reticulum (ER)-targeted Melan-A/MART-1(27-35) model tumor epitope (rVV-MUS12).
|
202 |
22116674
|
In this study, we show that antigen presenting cells (APC), infected with rVV-US12, display a decreased ability to present TAP dependent MHC class-I restricted viral antigens to CD8+ T-cells.
|
203 |
22116674
|
While HLA class-I cell surface expression is strongly downregulated, other important immune related molecules such as CD80, CD44 and, most importantly, MHC class-II are unaffected.
|
204 |
22396020
|
Significantly elevated levels of CD3⁺ and CD8⁺ T cells as well as cells expressing interleukin (IL)-7, perforin and granulysin were found in TB lung lesions and spleen from rBCG/rAd35-vaccinated animals compared with BCG/rAd35-vaccinated or unvaccinated animals.
|
205 |
22396020
|
Our observations suggest that a protective immune response in rBCG/rAd35-vaccinated nonhuman primates was associated with enhanced MHC class I antigen presentation and activation of CD8⁺ effector T-cell responses at the local site of infection in Mtb-challenged animals.
|
206 |
24415578
|
Therefore, we analyzed a cohort of patients with a primary (n = 43) and subsequent recurrent uVIN lesion (n = 20), vaccine-treated uVIN patients (n = 12), patients with human papillomavirus (HPV)-induced vulvar carcinoma (n = 21) and healthy controls (n = 26) for the expression of classical HLA-class I/II and nonclassical HLA-E/-G and MHC class I chain-related molecule A (MICA).
|
207 |
24415578
|
Of the nonclassical molecules, MICA was downregulated in 80% of uVIN whereas HLA-E and -G were expressed in a minority of cases.
|
208 |
24415578
|
Therefore, we analyzed a cohort of patients with a primary (n = 43) and subsequent recurrent uVIN lesion (n = 20), vaccine-treated uVIN patients (n = 12), patients with human papillomavirus (HPV)-induced vulvar carcinoma (n = 21) and healthy controls (n = 26) for the expression of classical HLA-class I/II and nonclassical HLA-E/-G and MHC class I chain-related molecule A (MICA).
|
209 |
24415578
|
Of the nonclassical molecules, MICA was downregulated in 80% of uVIN whereas HLA-E and -G were expressed in a minority of cases.
|
210 |
24515851
|
These results bring a new perspective on the crosstalk between the MHC class II and MHC class I antigen-processing pathways, and may inspire new ideas for the design of vaccines against viruses and tumors.
|
211 |
24784026
|
When conditioned on HLA and nongenetic factors previously associated with HIV-1 viral load (VL) in the study cohort, penalized approaches (HyperLasso models) identified an intergenic SNP (rs3094626 between RPP21 and HLA-E) and an intronic SNP (rs3134931 in NOTCH4) as novel correlates of early set-point VL in SCs.
|
212 |
24790732
|
MHC class I antigen presentation and implications for developing a new generation of therapeutic vaccines.
|
213 |
24795724
|
Research in mouse models has highly enhanced our understanding of the mechanisms underlying cross-presentation and the dendritic cells (DC) subsets involved, however, these results cannot be readily translated toward the role of human DC in MHC class I-antigen presentation of human viruses.
|
214 |
25009541
|
Using proteins specific for different Mtb infection phases, many new antigens of the latency-associated Mtb DosR-regulon as well as resuscitation promoting factor proteins, associated with resuscitating TB, were discovered that were recognized by CD4(+) and CD8(+) T-cells.
|
215 |
25009541
|
Comparable methods, led to the identification of HLA-E-restricted Mtb epitopes recognized by CD8(+) T-cells.
|
216 |
25482339
|
For protein-based vaccines, the main biological barrier to overcome is the default MHC class-II-pathway, with activation of CD4 T cells rather than CD8 T cells.
|
217 |
25482339
|
The latter requires antigens to access the cytosol and MHC class I antigen presentation.
|
218 |
25482339
|
This "photochemical internalisation" resulted in activation, proliferation, and IFN-γ production of cytotoxic CD8 T cells, which suppressed tumour growth by infiltrating CD8 T cells and caspase-3-dependent apoptosis.
|
219 |
25482339
|
The process was independent of MHC class II, MyD88, and TLR4 signalling, but dependent on trypsin- and caspase-like proteasome activity and partly also on chloroquine.
|
220 |
25833403
|
Spheroplasts (bacterial cell devoid of cell wall) are likely to undergo membrane-membrane fusion, leading to the delivery of their content to the cytosol of antigen-presenting cells, thus facilitating MHC class I antigen processing and presentation.
|
221 |
26453750
|
Human cells expressing HLA class I ligands for inhibitory receptors KIR2DL1, KIR2DL2/3, or CD94-NKG2A were transfected with IL-15Rα.
|
222 |
26453750
|
Proliferation of primary NK cells in response to transpresented IL-15 was reduced by engagement of either KIR2DL1 or KIR2DL2/3 by cognate HLA-C ligands.
|
223 |
26453750
|
Inhibitory KIR-HLA-C interactions did not reduce the proliferation induced by soluble IL-15.
|
224 |
26453750
|
Therefore, transpresentation of IL-15 is subject to downregulation by MHC class I-specific inhibitory receptors.
|
225 |
26453750
|
Similarly, proliferation of the NKG2A(+) cell line NKL induced by IL-15 transpresentation was inhibited by HLA-E.
|
226 |
26453750
|
Coengagement of inhibitory receptors, either KIR2DL1 or CD94-NKG2A, did not inhibit phosphorylation of Stat5 but inhibited selectively phosphorylation of Akt and S6 ribosomal protein.
|
227 |
26457200
|
Aiming to study the influence of YFV17D immunization on the transcriptional profiles of immunomodulatory genes in thymus, we evaluated the gene expression of AIRE, FOXP3, H2-Q7 (Qa-2/HLA-G), H2-T23 (Qa-1/HLA-E), H2-Q10, and H2-K1 following immunization with 10,000 LD50 of YFV17D in C57BL/6 and BALB/c mice.
|
228 |
26457200
|
The YFV17D virus replicated in thymus and induced the expression of H2-Q7 (Qa-2/HLA-G) and H2-T23 (Qa-1/HLA-E) transcripts and repressed the expression of AIRE and FOXP3.
|
229 |
26457200
|
Expression of H2-T23 (Qa-1/HLA-E) and FOXP3 was induced in thymus and liver of C57BL/6 mice, which exhibited defective control of viral load, suggesting a higher susceptibility to YFV17D infection.
|
230 |
26457200
|
Aiming to study the influence of YFV17D immunization on the transcriptional profiles of immunomodulatory genes in thymus, we evaluated the gene expression of AIRE, FOXP3, H2-Q7 (Qa-2/HLA-G), H2-T23 (Qa-1/HLA-E), H2-Q10, and H2-K1 following immunization with 10,000 LD50 of YFV17D in C57BL/6 and BALB/c mice.
|
231 |
26457200
|
The YFV17D virus replicated in thymus and induced the expression of H2-Q7 (Qa-2/HLA-G) and H2-T23 (Qa-1/HLA-E) transcripts and repressed the expression of AIRE and FOXP3.
|
232 |
26457200
|
Expression of H2-T23 (Qa-1/HLA-E) and FOXP3 was induced in thymus and liver of C57BL/6 mice, which exhibited defective control of viral load, suggesting a higher susceptibility to YFV17D infection.
|
233 |
26457200
|
Aiming to study the influence of YFV17D immunization on the transcriptional profiles of immunomodulatory genes in thymus, we evaluated the gene expression of AIRE, FOXP3, H2-Q7 (Qa-2/HLA-G), H2-T23 (Qa-1/HLA-E), H2-Q10, and H2-K1 following immunization with 10,000 LD50 of YFV17D in C57BL/6 and BALB/c mice.
|
234 |
26457200
|
The YFV17D virus replicated in thymus and induced the expression of H2-Q7 (Qa-2/HLA-G) and H2-T23 (Qa-1/HLA-E) transcripts and repressed the expression of AIRE and FOXP3.
|
235 |
26457200
|
Expression of H2-T23 (Qa-1/HLA-E) and FOXP3 was induced in thymus and liver of C57BL/6 mice, which exhibited defective control of viral load, suggesting a higher susceptibility to YFV17D infection.
|