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PMID |
Sentence |
1 |
15735048
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CD4(+) Treg cells do not secrete interleukin (IL)-10 and transforming growth factor beta cytokines but express CD25, the glucocorticoid-induced tumor necrosis factor receptor-related protein (GITR), and Forkhead Box P3 (Foxp3), and are capable of suppressing the proliferative responses of naive CD4(+) and CD8(+) T cells to stimulation with mitogenic anti-CD3 antibody.
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2 |
15735048
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Importantly, these Treg cells suppress IL-2 secretion by CD4(+) effector T cells specific for either EBNA1 or a melanoma antigen, suggesting that these CD4(+) Treg cells induce immune suppression.
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3 |
16179369
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Such tumor-induced regulatory T cells (TMTregs) arose both from precommitted "natural" regulatory T cells and CD4(+)CD25(-)GITR(low) precursors.
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4 |
16439533
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Multimeric soluble CD40 ligand and GITR ligand as adjuvants for human immunodeficiency virus DNA vaccines.
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5 |
16439533
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CD40 ligand (CD40L), a member of the tumor necrosis factor (TNF) superfamily (TNFSF), is one candidate adjuvant, but it has been difficult to use because it is normally expressed as a trimeric membrane molecule.
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6 |
16439533
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Fusion with the body of Acrp30 was used to produce the 2-trimer form, and fusion with the body of surfactant protein D was used to produce the 4-trimer form.
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7 |
16439533
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These CD40L-augmented DNA vaccines elicited strong CD8(+) T-cell responses but did not elicit significant CD4(+) T-cell or antibody responses.
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8 |
16439533
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To test the applicability of the multimeric fusion protein approach to other TNFSFs, a 4-trimer construct for the ligand of glucocorticoid-induced TNF family-related receptor (GITR) was also prepared.
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9 |
16439533
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Multimeric soluble GITR ligand (GITRL) augmented the CD8(+) T-cell, CD4(+) T-cell, and antibody responses to DNA vaccination.
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10 |
16439533
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In summary, multimeric CD40L and GITRL are new adjuvants for DNA vaccines.
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11 |
16439533
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Multimeric soluble CD40 ligand and GITR ligand as adjuvants for human immunodeficiency virus DNA vaccines.
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12 |
16439533
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CD40 ligand (CD40L), a member of the tumor necrosis factor (TNF) superfamily (TNFSF), is one candidate adjuvant, but it has been difficult to use because it is normally expressed as a trimeric membrane molecule.
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13 |
16439533
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Fusion with the body of Acrp30 was used to produce the 2-trimer form, and fusion with the body of surfactant protein D was used to produce the 4-trimer form.
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14 |
16439533
|
These CD40L-augmented DNA vaccines elicited strong CD8(+) T-cell responses but did not elicit significant CD4(+) T-cell or antibody responses.
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15 |
16439533
|
To test the applicability of the multimeric fusion protein approach to other TNFSFs, a 4-trimer construct for the ligand of glucocorticoid-induced TNF family-related receptor (GITR) was also prepared.
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16 |
16439533
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Multimeric soluble GITR ligand (GITRL) augmented the CD8(+) T-cell, CD4(+) T-cell, and antibody responses to DNA vaccination.
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17 |
16439533
|
In summary, multimeric CD40L and GITRL are new adjuvants for DNA vaccines.
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18 |
16439533
|
Multimeric soluble CD40 ligand and GITR ligand as adjuvants for human immunodeficiency virus DNA vaccines.
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19 |
16439533
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CD40 ligand (CD40L), a member of the tumor necrosis factor (TNF) superfamily (TNFSF), is one candidate adjuvant, but it has been difficult to use because it is normally expressed as a trimeric membrane molecule.
|
20 |
16439533
|
Fusion with the body of Acrp30 was used to produce the 2-trimer form, and fusion with the body of surfactant protein D was used to produce the 4-trimer form.
|
21 |
16439533
|
These CD40L-augmented DNA vaccines elicited strong CD8(+) T-cell responses but did not elicit significant CD4(+) T-cell or antibody responses.
|
22 |
16439533
|
To test the applicability of the multimeric fusion protein approach to other TNFSFs, a 4-trimer construct for the ligand of glucocorticoid-induced TNF family-related receptor (GITR) was also prepared.
|
23 |
16439533
|
Multimeric soluble GITR ligand (GITRL) augmented the CD8(+) T-cell, CD4(+) T-cell, and antibody responses to DNA vaccination.
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24 |
16439533
|
In summary, multimeric CD40L and GITRL are new adjuvants for DNA vaccines.
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25 |
16585551
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Intranasal vaccination with proinsulin DNA induces regulatory CD4+ T cells that prevent experimental autoimmune diabetes.
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26 |
16585551
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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.
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27 |
16585551
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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.
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28 |
16585551
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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.
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29 |
16651447
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We sought to improve on this strategy by combining xenogeneic DNA vaccination with an agonist anti-glucocorticoid-induced tumor necrosis factor receptor family-related gene (GITR) monoclonal antibody (mAb), DTA-1, which has been shown previously both to costimulate activated effector CD4(+) and CD8(+) T cells and to inhibit the suppressive activity of CD4(+)CD25(+) regulatory T cells.
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30 |
16651447
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We found that ligation of GITR with DTA-1 just before the second, but not the first, of 3 weekly DNA immunizations enhanced primary CD8(+) T-cell responses against the melanoma differentiation antigens gp100 and tyrosinase-related protein 2/dopachrome tautomerase and increased protection from a lethal challenge with B16 melanoma.
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31 |
16651447
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Finally, this effect on vaccine-induced CD8(+) T-cell responses was partially independent of CD4(+) T cells (both helper and regulatory), consistent with a direct costimulatory effect on the effector CD8(+) cells themselves.
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32 |
16651447
|
We sought to improve on this strategy by combining xenogeneic DNA vaccination with an agonist anti-glucocorticoid-induced tumor necrosis factor receptor family-related gene (GITR) monoclonal antibody (mAb), DTA-1, which has been shown previously both to costimulate activated effector CD4(+) and CD8(+) T cells and to inhibit the suppressive activity of CD4(+)CD25(+) regulatory T cells.
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33 |
16651447
|
We found that ligation of GITR with DTA-1 just before the second, but not the first, of 3 weekly DNA immunizations enhanced primary CD8(+) T-cell responses against the melanoma differentiation antigens gp100 and tyrosinase-related protein 2/dopachrome tautomerase and increased protection from a lethal challenge with B16 melanoma.
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34 |
16651447
|
Finally, this effect on vaccine-induced CD8(+) T-cell responses was partially independent of CD4(+) T cells (both helper and regulatory), consistent with a direct costimulatory effect on the effector CD8(+) cells themselves.
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35 |
16988005
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Macaque multimeric soluble CD40 ligand and GITR ligand constructs are immunostimulatory molecules in vitro.
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36 |
16988005
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CD40 ligand (CD40L) and GITR ligand (glucocorticoid-induced tumor necrosis factor receptor-related protein ligand [GITRL]) are tumor necrosis factor superfamily molecules that can be used as vaccine adjuvants.
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37 |
16988005
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In a previous human immunodeficiency virus (HIV) DNA vaccine study in mice, we found that plasmids expressing multimeric soluble forms of trimeric CD40L (i.e., many trimers) were stronger activators of CD8(+) T-cell responses than were single-trimer soluble forms or the natural membrane-bound molecule.
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38 |
16988005
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With human cells, four-trimer macaque GITRL costimulated CD4(+) T-cell proliferation and abrogated the immunosuppressive effects of CD4(+) CD25(+) regulatory T cells on a mixed leukocyte reaction.
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39 |
16988005
|
Macaque multimeric soluble CD40 ligand and GITR ligand constructs are immunostimulatory molecules in vitro.
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40 |
16988005
|
CD40 ligand (CD40L) and GITR ligand (glucocorticoid-induced tumor necrosis factor receptor-related protein ligand [GITRL]) are tumor necrosis factor superfamily molecules that can be used as vaccine adjuvants.
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41 |
16988005
|
In a previous human immunodeficiency virus (HIV) DNA vaccine study in mice, we found that plasmids expressing multimeric soluble forms of trimeric CD40L (i.e., many trimers) were stronger activators of CD8(+) T-cell responses than were single-trimer soluble forms or the natural membrane-bound molecule.
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42 |
16988005
|
With human cells, four-trimer macaque GITRL costimulated CD4(+) T-cell proliferation and abrogated the immunosuppressive effects of CD4(+) CD25(+) regulatory T cells on a mixed leukocyte reaction.
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43 |
17475646
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Functional Foxp3+ CD4+ CD25(Bright+) "natural" regulatory T cells are abundant in rabbit conjunctiva and suppress virus-specific CD4+ and CD8+ effector T cells during ocular herpes infection.
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44 |
17475646
|
We studied the phenotype and distribution of "naturally" occurring CD4(+) CD25(+) T regulatory cells (CD4(+) CD25(+) nT(reg) cells) resident in rabbit conjunctiva, the main T-cell inductive site of the ocular mucosal immune system, and we investigated their suppressive capacities using herpes simplex virus type 1 (HSV-1)-specific effector T (T(eff)) cells induced during ocular infection.
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45 |
17475646
|
The expression of CD4, CD25, CTLA4, GITR, and Foxp3 was examined by reverse transcription-PCR, Western blotting, and fluorescence-activated cell sorter analysis in CD45(+) pan-leukocytes isolated from conjunctiva, spleen, and peripheral blood monocyte cells (PBMC) of HSV-1-infected and uninfected rabbits.
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46 |
17475646
|
Normal conjunctiva showed a higher frequency of CD4(+) CD25((Bright+)) T cells than did spleen and PBMC.
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47 |
17475646
|
These cells expressed high levels of Foxp3, GITR, and CTLA4 molecules.
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48 |
17475646
|
CD4(+) CD25((Bright+)) T cells were localized continuously along the upper and lower palpebral and bulbar conjunctiva, throughout the epithelium and substantia propria.
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49 |
17475646
|
Conjunctiva-derived CD4(+) CD25((Bright+)) T cells, but not CD4(+) CD25((low)) T cells, efficiently suppressed HSV-specific CD4(+) and CD8(+) T(eff) cells.
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50 |
17475646
|
The CD4(+) CD25((Bright+)) T-cell-mediated suppression was effective on both peripheral blood and conjunctiva infiltrating T(eff) cells and was cell-cell contact dependent but independent of interleukin-10 and transforming growth factor beta.
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51 |
17475646
|
Interestingly, during an ocular herpes infection, there was a selective increase in the frequency and suppressive capacity of Foxp3(+) CD4(+) CD25((Bright+)) T cells in conjunctiva but not in the spleen or in peripheral blood.
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52 |
17475646
|
Altogether, these results provide the first evidence that functional Foxp3(+) CD4(+) CD25((Bright+)) T(reg) cells accumulate in the conjunctiva.
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53 |
17475646
|
It remains to be determined whether conjunctiva CD4(+) CD25(+) nT(reg) cells affect the topical/mucosal delivery of subunit vaccines that stimulate the ocular mucosal immune system.
|
54 |
17475646
|
Functional Foxp3+ CD4+ CD25(Bright+) "natural" regulatory T cells are abundant in rabbit conjunctiva and suppress virus-specific CD4+ and CD8+ effector T cells during ocular herpes infection.
|
55 |
17475646
|
We studied the phenotype and distribution of "naturally" occurring CD4(+) CD25(+) T regulatory cells (CD4(+) CD25(+) nT(reg) cells) resident in rabbit conjunctiva, the main T-cell inductive site of the ocular mucosal immune system, and we investigated their suppressive capacities using herpes simplex virus type 1 (HSV-1)-specific effector T (T(eff)) cells induced during ocular infection.
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56 |
17475646
|
The expression of CD4, CD25, CTLA4, GITR, and Foxp3 was examined by reverse transcription-PCR, Western blotting, and fluorescence-activated cell sorter analysis in CD45(+) pan-leukocytes isolated from conjunctiva, spleen, and peripheral blood monocyte cells (PBMC) of HSV-1-infected and uninfected rabbits.
|
57 |
17475646
|
Normal conjunctiva showed a higher frequency of CD4(+) CD25((Bright+)) T cells than did spleen and PBMC.
|
58 |
17475646
|
These cells expressed high levels of Foxp3, GITR, and CTLA4 molecules.
|
59 |
17475646
|
CD4(+) CD25((Bright+)) T cells were localized continuously along the upper and lower palpebral and bulbar conjunctiva, throughout the epithelium and substantia propria.
|
60 |
17475646
|
Conjunctiva-derived CD4(+) CD25((Bright+)) T cells, but not CD4(+) CD25((low)) T cells, efficiently suppressed HSV-specific CD4(+) and CD8(+) T(eff) cells.
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61 |
17475646
|
The CD4(+) CD25((Bright+)) T-cell-mediated suppression was effective on both peripheral blood and conjunctiva infiltrating T(eff) cells and was cell-cell contact dependent but independent of interleukin-10 and transforming growth factor beta.
|
62 |
17475646
|
Interestingly, during an ocular herpes infection, there was a selective increase in the frequency and suppressive capacity of Foxp3(+) CD4(+) CD25((Bright+)) T cells in conjunctiva but not in the spleen or in peripheral blood.
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63 |
17475646
|
Altogether, these results provide the first evidence that functional Foxp3(+) CD4(+) CD25((Bright+)) T(reg) cells accumulate in the conjunctiva.
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64 |
17475646
|
It remains to be determined whether conjunctiva CD4(+) CD25(+) nT(reg) cells affect the topical/mucosal delivery of subunit vaccines that stimulate the ocular mucosal immune system.
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65 |
17671218
|
Treatment with agonistic anti-glucocorticoid-induced TNFR family-related receptor (GITR) antibody plus AdhHM immunization significantly increased self-reactive CTL responses, and alpha-galactosylceramide (alphaGalCer)-loaded dendritic cells (DC) transduced with AdhHM were shown to break self-tolerance in a tolerogenic murine tumor model.
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66 |
18632650
|
Regulatory T cell-resistant CD8+ T cells induced by glucocorticoid-induced tumor necrosis factor receptor signaling.
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67 |
18632650
|
We previously found that a Salmonella typhimurium vector engineered to secrete soluble tumor antigen induces CD4(+) T cells resistant to CD4(+)CD25(+) regulatory T cells (Treg) and that glucocorticoid-induced tumor necrosis factor receptor family-related gene (GITR) signal is involved in the development of this resistance.
|
68 |
18632650
|
In this study, we address the potential of incorporating GITR ligand (GITRL) as a way to augment the immunogenicity of cancer vaccines.
|
69 |
18632650
|
BALB/c mice were immunized by gene gun with plasmids encoding the mutated extracellular signal-regulated kinase 2 (mERK) with or without plasmids encoding mouse GITRL.
|
70 |
18632650
|
Coadministration with GITRL during primary and secondary immunization enhanced the induction of mERK-specific CD8(+) T cells.
|
71 |
18632650
|
Antibody depletion and minigene analysis suggested that GITRL directly activated CTL epitope-specific CD8(+) T cells independently of CD4(+) T cells.
|
72 |
18632650
|
Immunization with plasmids encoding a CTL epitope and GITRL resulted in strong tumor inhibition in a CD8(+) T cell-dependent manner.
|
73 |
18632650
|
Furthermore, CTL epitope-specific CD8(+) T cells induced by immunization with plasmids encoding CTL epitope coadministered with GITRL were refractory to suppression by CD4(+)CD25(+) Tregs compared with CD8(+) T cells induced without GITR signaling.
|
74 |
18632650
|
Regulatory T cell-resistant CD8+ T cells induced by glucocorticoid-induced tumor necrosis factor receptor signaling.
|
75 |
18632650
|
We previously found that a Salmonella typhimurium vector engineered to secrete soluble tumor antigen induces CD4(+) T cells resistant to CD4(+)CD25(+) regulatory T cells (Treg) and that glucocorticoid-induced tumor necrosis factor receptor family-related gene (GITR) signal is involved in the development of this resistance.
|
76 |
18632650
|
In this study, we address the potential of incorporating GITR ligand (GITRL) as a way to augment the immunogenicity of cancer vaccines.
|
77 |
18632650
|
BALB/c mice were immunized by gene gun with plasmids encoding the mutated extracellular signal-regulated kinase 2 (mERK) with or without plasmids encoding mouse GITRL.
|
78 |
18632650
|
Coadministration with GITRL during primary and secondary immunization enhanced the induction of mERK-specific CD8(+) T cells.
|
79 |
18632650
|
Antibody depletion and minigene analysis suggested that GITRL directly activated CTL epitope-specific CD8(+) T cells independently of CD4(+) T cells.
|
80 |
18632650
|
Immunization with plasmids encoding a CTL epitope and GITRL resulted in strong tumor inhibition in a CD8(+) T cell-dependent manner.
|
81 |
18632650
|
Furthermore, CTL epitope-specific CD8(+) T cells induced by immunization with plasmids encoding CTL epitope coadministered with GITRL were refractory to suppression by CD4(+)CD25(+) Tregs compared with CD8(+) T cells induced without GITR signaling.
|
82 |
18632650
|
Regulatory T cell-resistant CD8+ T cells induced by glucocorticoid-induced tumor necrosis factor receptor signaling.
|
83 |
18632650
|
We previously found that a Salmonella typhimurium vector engineered to secrete soluble tumor antigen induces CD4(+) T cells resistant to CD4(+)CD25(+) regulatory T cells (Treg) and that glucocorticoid-induced tumor necrosis factor receptor family-related gene (GITR) signal is involved in the development of this resistance.
|
84 |
18632650
|
In this study, we address the potential of incorporating GITR ligand (GITRL) as a way to augment the immunogenicity of cancer vaccines.
|
85 |
18632650
|
BALB/c mice were immunized by gene gun with plasmids encoding the mutated extracellular signal-regulated kinase 2 (mERK) with or without plasmids encoding mouse GITRL.
|
86 |
18632650
|
Coadministration with GITRL during primary and secondary immunization enhanced the induction of mERK-specific CD8(+) T cells.
|
87 |
18632650
|
Antibody depletion and minigene analysis suggested that GITRL directly activated CTL epitope-specific CD8(+) T cells independently of CD4(+) T cells.
|
88 |
18632650
|
Immunization with plasmids encoding a CTL epitope and GITRL resulted in strong tumor inhibition in a CD8(+) T cell-dependent manner.
|
89 |
18632650
|
Furthermore, CTL epitope-specific CD8(+) T cells induced by immunization with plasmids encoding CTL epitope coadministered with GITRL were refractory to suppression by CD4(+)CD25(+) Tregs compared with CD8(+) T cells induced without GITR signaling.
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90 |
18676860
|
Importantly, they recognized HLA-DRB1*04-matched fresh leukemic cells expressing the WT1 antigen.
|
91 |
18676860
|
These clones exerted a T helper 2 cytokine profile, had a CD4(+)CD25(+)Foxp3(+)GITR(+)CD127(-) T(reg) phenotype, and significantly inhibited the proliferative activity of allogeneic T cells independently of cell contact.
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92 |
18676860
|
Furthermore, priming of T cells with the WT1-126 HLA-A0201-restricted peptide in the presence of T(regs) strongly inhibited the induction of anti-WT1-126 CD8(+) CTL responses as evidenced by both very low cytotoxic activity and IFN-gamma production.
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93 |
18676860
|
Moreover, these T(reg) clones specifically produced granzyme B and selectively induced apoptosis in WT1-84-pulsed autologous antigen-presenting cells but not in apoptotic-resistant DR4-matched leukemic cells.
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94 |
18676860
|
Importantly, we have also detected anti-WT1-84 interleukin-5(+)/granzyme B(+)/Foxp3(+) CD4(+) T(regs) in five of eight HLA-DR4(+) acute myeloid leukemia patients.
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95 |
18941113
|
T-cell modulation was accomplished by targeting both effector and regulatory T-cell populations using systemic administration of monoclonal antibodies against OX40, CTLA4, GITR, and folate receptor 4 (FR4).
|
96 |
18941113
|
When combined with intratumoral CpG, it induced antitumor CD4 and CD8 T-cell immunity, cured large and systemic lymphoma tumors without chemotherapy, and provided long-lasting immunity against tumor rechallenge.
|
97 |
19240168
|
Various monoclonal antibodies (mAb) target immune system molecules to enhance immunity by costimulating T cells (i.e., CD137, OX40, CD40, GITR) or interfering in coinhibitory signals (i.e., CTLA-4, PD-1).
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98 |
19498460
|
Numerous studies have shown that treatment of mice with an agonistic mAb, clone DTA-1, targeting murine glucocorticoid-induced tumor necrosis factor receptor (GITR) results in enhanced immune responses in tumor-bearing animals.
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99 |
19498460
|
To illustrate the broad utility of this strategy, we show that DC transfected with mRNA encoding GITR-ligand/Fc fusion protein is also an effective tumor vaccine adjuvant.
|
100 |
19498460
|
Numerous studies have shown that treatment of mice with an agonistic mAb, clone DTA-1, targeting murine glucocorticoid-induced tumor necrosis factor receptor (GITR) results in enhanced immune responses in tumor-bearing animals.
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101 |
19498460
|
To illustrate the broad utility of this strategy, we show that DC transfected with mRNA encoding GITR-ligand/Fc fusion protein is also an effective tumor vaccine adjuvant.
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102 |
20198327
|
In HCC peripheral blood and tumor-infiltrating lymphocytes, we found increased numbers of Tregs, which expressed high levels of HLA-DR, GITR and CD103.
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103 |
21154120
|
Targeted immunomodulatory therapy is focused primarily on the activation of costimulatory receptors (eg, 4-1BB, OX40 and GITR [glucocorticoid-induced TNF receptor-related gene]) or the blockade of co-inhibitory receptors (eg, CTLA-4, PD-1 and PD-L1) on T-cells during activation and/or effector responses.
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104 |
22028176
|
Enhancement of anti-tumor immunity through local modulation of CTLA-4 and GITR by dendritic cells.
|
105 |
22028176
|
Systemic administration of mAbs targeting the immune modulatory receptors CTLA-4 and glucocorticoid-induced TNFR-related protein (GITR) on Treg and effector T cells augments anti-tumor immunity both experimentally and clinically, but can induce life-threatening autoimmunity.
|
106 |
22028176
|
To achieve this goal, DCs transfected with mRNA encoding the H and L chains of anti-mouse CTLA-4 and GITR mAbs were co-administered with tumor antigen mRNA-transfected DCs.
|
107 |
22028176
|
Using in vitro assays with human DCs, we demonstrated that DCs transfected with mRNA encoding a humanized anti-CTLA-4 mAb and mRNA encoding a soluble human GITR-L fusion protein enhance the induction of anti-tumor CTLs in response to DCs transfected with mRNAs encoding either melanoma or breast cancer antigens.
|
108 |
22028176
|
Enhancement of anti-tumor immunity through local modulation of CTLA-4 and GITR by dendritic cells.
|
109 |
22028176
|
Systemic administration of mAbs targeting the immune modulatory receptors CTLA-4 and glucocorticoid-induced TNFR-related protein (GITR) on Treg and effector T cells augments anti-tumor immunity both experimentally and clinically, but can induce life-threatening autoimmunity.
|
110 |
22028176
|
To achieve this goal, DCs transfected with mRNA encoding the H and L chains of anti-mouse CTLA-4 and GITR mAbs were co-administered with tumor antigen mRNA-transfected DCs.
|
111 |
22028176
|
Using in vitro assays with human DCs, we demonstrated that DCs transfected with mRNA encoding a humanized anti-CTLA-4 mAb and mRNA encoding a soluble human GITR-L fusion protein enhance the induction of anti-tumor CTLs in response to DCs transfected with mRNAs encoding either melanoma or breast cancer antigens.
|
112 |
22028176
|
Enhancement of anti-tumor immunity through local modulation of CTLA-4 and GITR by dendritic cells.
|
113 |
22028176
|
Systemic administration of mAbs targeting the immune modulatory receptors CTLA-4 and glucocorticoid-induced TNFR-related protein (GITR) on Treg and effector T cells augments anti-tumor immunity both experimentally and clinically, but can induce life-threatening autoimmunity.
|
114 |
22028176
|
To achieve this goal, DCs transfected with mRNA encoding the H and L chains of anti-mouse CTLA-4 and GITR mAbs were co-administered with tumor antigen mRNA-transfected DCs.
|
115 |
22028176
|
Using in vitro assays with human DCs, we demonstrated that DCs transfected with mRNA encoding a humanized anti-CTLA-4 mAb and mRNA encoding a soluble human GITR-L fusion protein enhance the induction of anti-tumor CTLs in response to DCs transfected with mRNAs encoding either melanoma or breast cancer antigens.
|
116 |
23947352
|
The contextual role of TNFR family members in CD8(+) T-cell control of viral infections.
|
117 |
23947352
|
The role of specific TNF receptor (TNFR) family members in antiviral immunity depends on the stage of the immune response and can vary with the virus type and its virulence.
|
118 |
23947352
|
Here, we focus on five members of the TNFR family that are prominently expressed on CD8(+) T cells during viral infections, namely, 4-1BB (CD137), CD27, OX40 (CD134), GITR, and TNFR2. 4-1BB, CD27, OX40, and GITR have primarily prosurvival roles for CD8(+) T cells during viral infection, although under some circumstances 4-1BB, GITR, or CD27 signals can limit immunity.
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119 |
23947352
|
Although TNFR2 can be costimulatory under some circumstances, its main role in CD8(+) T-cell responses during viral infection appears to be in contraction of the response.
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120 |
23947352
|
Several TNF family ligands are being explored as adjuvants for viral vaccines, and agonistic antibodies to TNFR family members are being investigated for immunotherapy of chronic viral infection alone and in combination with checkpoint blockade.
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121 |
24014877
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Therefore, much effort has been made to generate agonistic Abs targeting members of the TNFR superfamily, such as OX40, 4-1BB, and GITR, expressed on effector T cells and Tregs, to reinvigorate T cell effector function and block Treg-suppressive function.
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122 |
24014877
|
In this article, we describe the development of a panel of anti-human OX40 agonistic mouse mAbs that could promote effector CD4(+) and CD8(+) T cell proliferation, inhibit the induction of CD4(+) IL-10 -producing type 1 regulatory T cells, inhibit the expansion of ICOS(+)IL-10(+) Tregs, inhibit TGF-β-induced FOXP3 expression on naive CD4(+) T cells, and block natural Treg-suppressive function.
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123 |
24732076
|
In mouse tumor models, engagement of activating Fcγ receptor (FcγR)-expressing immune cells was recently shown to be required for the tumoricidal activity of antibodies recognizing the tumor necrosis factor superfamily receptor (TNFR) GITR (CD357) and CTLA-4 (CD152).
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124 |
24732076
|
Here, we explored the mechanism of antitumor activity mediated by an agonistic antibody (clone OX86) to the co-stimulatory TNFR OX40 (CD134).
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125 |
24795357
|
We have shown that a vaccine based on alphavirus replicon particles (VRP) activates strong cellular and humoral immunity to tyrosinase-related protein-2 (TRP2) melanoma antigen, providing prophylactic and therapeutic effects in stringent mouse models.
|
126 |
24795357
|
Here, we report that the immunogenicity and efficacy of this vaccine is increased in combination with either antagonist anti-CTL antigen-4 (CTLA-4) or agonist anti-glucocorticoid-induced TNF family-related gene (GITR) immunomodulatory monoclonal antibodies (mAb).
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127 |
24795357
|
These mAbs had similar adjuvant effects in priming an adaptive immune response against the vaccine-encoded antigen, augmenting, respectively, approximately 4- and 2-fold the TRP2-specific CD8(+) T-cell response and circulating Abs, compared with the vaccine alone.
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128 |
24795357
|
Furthermore, while both mAbs increased the frequency of tumor-infiltrating CD8(+) T cells, anti-CTLA-4 mAb also increased the quantity of intratumor CD4(+)Foxp3(-) T cells expressing the negative costimulatory molecule programmed death-1 (PD-1).
|
129 |
24795357
|
They also indicate that tumor-infiltrating CD4(+)Foxp3(-)PD-1(+) T cells may affect the outcome of immunomodulatory treatments.
|
130 |
24926293
|
In probing the possible mechanism, we observe that SLA-CpG-DCs vaccination results in the significant decrease in Foxp3(+)GITR(+)CTLA4(+)CD4(+)CD25(+) regulatory T cells (Treg) cell population in Leishmania-infected mice.
|
131 |
24926293
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Moreover, we demonstrate that a CXC chemokine, IFN-γ-inducible protein 10 (IP-10; CXCL10), has a direct role in the regulation of CD4(+)CD25(+) Treg cells in SLA-CpG-DC-vaccinated parasitized mice as Treg cells isolated from IP-10-depleted vaccinated mice showed significantly increased TGF-β production and suppressive activity.
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132 |
25772201
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It has been reported that glucocorticoid-induced tumor necrosis factor receptor-related protein (GITR) and its ligand (GITRL) are involved in modulating both innate and adaptive immune responses.
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133 |
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However, significantly higher levels of CD4(+)Th1, Th2 and CD8(+)IFN-γ(+)T cells were found in the pIRES/VP1/mGITRL group compared with control groups.
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