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Cutting Edge |
Department of Microbiology-Immunology and Interdepartmental Immunobiology Center, Northwestern University Medical School, Chicago, IL 60611
| Abstract |
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| Introduction |
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CD4+ T-regulatory
(TR)3
cells display a mixed phenotype of naive and activated cell surface
markers, e.g.,
CD4+CD25+CD62Lhigh
(2). Importantly, the TR cell
population does not contain previously activated
CD4+ T cells (3) and inhibits T cell
proliferation in a TCR-dependent manner, possibly via direct T-T cell
interactions. Although the exact mechanism by which
TR cells exert their inhibitory influence is
still unknown, IL-10 production, surface CTLA-4 expression, IL-2
binding, costimulatory molecule blockade, and surface TGF-
expression are all proposed mechanisms by which
TR cells may down-regulate
CD4+ T cell responses (2).
Consistent with their proposed role as active regulators of autoimmune responses, the depletion of TR cells in neonatal animals results in the spontaneous induction of autoimmune gastritis in both the thymectomy and nu/nu model systems (4, 5). Importantly, TR cells also block the gastritis resulting from the transfer of H/K ATPase-specific effector T cells (4, 5). Similarly, the transfer of CD4+CD25+ TR cells in an adoptive model of diabetes conferred significant protection against the onset of spontaneous diabetes (6), and transfer of either CD4+CD25- or CD4+CD25+ TR cells has been reported to suppress spontaneous experimental autoimmune encephalomyelitis (EAE) mediated by naive myelin basic protein (MOG)-specific T cells in recombination-activating gene-1-deficient TCR-transgenic mice (7, 8). Collectively, these findings suggest that TR cells may block both the initiation of autoimmune responses and inhibit the function of established autoreactive effector cells.
In this study, we investigate the role of TR
cells in regulating the progression of active EAE in conventional
C57BL/6 mice. MOG3555-specific EAE
(9), a mouse model of multiple sclerosis, is a
CD4+ Th1-mediated autoimmune disease
(10) in which autoreactive T cells specific for myelin
components enter the CNS, initiating a cascade of inflammation and
demyelination. We report here that
CD4+CD25+
TR cells inhibit both the proliferation of and
IFN-
production by a MOG3555-specific T cell
line in vitro. In addition, supplementation of TR
cell numbers by adoptive transfer before active and adoptive EAE
induction significantly reduced the severity of clinical disease
potentially by promoting a disease-protective Th2 immune response and
preventing CNS inflammation via a mechanism that may involve
up-regulated expression of ICAM-1 and P-selectin. Together, these
findings support a role for TR cells in
protection from the onset/progression of autoimmune demyelination in
wild-type mice induced by active MOG3555/CFA
immunization or adoptive transfer of differentiated autoreactive Th1
cells.
| Materials and Methods |
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Female C57BL/6 mice, 56 wk old, were purchased from The Jackson Laboratory (Bar Harbor, ME). Mice were maintained on standard laboratory food and water ad libitum. Paralyzed animals were afforded easier access to food and water.
TR cells
Peripheral lymph nodes (LNs) were harvested from 6- to 7-wk-old
mice, mechanically disassociated, and depleted of APC populations
before positive selection of CD25+
TR cells using anti-CD25 Ab (7D4),
anti-rat
microbeads (Miltenyi Biotec, Auburn, CA), and an
AutoMACs (Miltenyi Biotec). The resulting population consisted of
between 85 and 95%
CD4+CD25+CD62Lhigh
T cells.
In vitro proliferation and ELISPOT assay
Draining LN cells or MOG3555-specific T cells (AG1) (11) were cultured with medium alone or different concentrations of MOG3555 (MEVGWYRSPFSRVVHLYRNGK; Genemed Synthesis, San Francisco, CA) for 72 h and then pulsed with 1 µCi/well [3H]TdR for the final 24 h of culture. [3H]TdR uptake was detected using a Topcount Microplate Scintillation Counter, and results are expressed as the mean of triplicate cultures ± SEM. ELISPOT assays were performed as previously described (11).
Induction and clinical evaluation of MOG3555-induced EAE
Female mice 67 wk old were immunized s.c. with 200 µl of an emulsion containing 800 µg of Mycobacterium tuberculosis H37Ra (Difco, Detroit, MI) and 200 µg of MOG3555 distributed over three spots on the flank. Each mouse additionally received 200 ng of pertussis toxin (List Biological Laboratories, Campbell, CA) in 200 µl of PBS i.p. on days 0 and 2 postimmunization. For adoptive transfer, 5 x 106 MOG3555 blasts were coinjected i.v. with either 2.5 x 106 TR (CD25+) or non-TR (CD25-) cells into naive C56BL/6 mice (11). Individual animals were observed daily, and clinical scores were assessed in a blinded manner on a scale of 05 as follows: 0 = no abnormality; 1 = limp tail; 2 = limp tail and hind limb weakness; 3 = hind limb paralysis; 4 = hind limb paralysis and forelimb weakness; and 5 = moribund. Data are reported as the mean daily clinical score. Mice were age and sex matched for all experiments.
Immunohistochemistry and immunofluorescence
CNS immunohistochemistry was performed as previously described (11). For immunofluorescence, single-cell suspensions were washed and incubated with fluorescently tagged Abs directed against a panel of cell surface markers (BD PharMingen, San Diego, CA). Fluorescent staining was analyzed using a FACSCalibur and CellQuest Pro (BD Biosciences, San Jose, CA).
Statistical analysis
Comparisons of clinical scores and ELISPOT frequencies between the various treatment groups were analyzed by unpaired Students t test. Values of p < 0.01 were considered significant.
| Results |
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secreted by the
MOG3555-specific Th1 cell line (Fig. 1
production was directly proportional to the E:T ratio (data not shown).
Thus, TR cells appear to be competent in
suppressing MOG3555-specific T cell
proliferation and IFN-
production in vitro.
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and TNF-
(12), were similar in the LNs (Fig. 2
50% in comparison with mice receiving
non-TR cells (Fig. 2
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| Discussion |
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production. TR cells
appear not to prevent the initial activation of target
CD4+ T cells but subsequently induce cell cycle
arrest (3). In light of these findings, it is not clear
whether the measured reduction in IFN-
production is the result of
direct effects on cytokine production or whether it results from
inhibition of Ag-specific cell expansion. Previous studies indicate
that TR cells must be activated via TCR ligation
before exerting their immunosuppressive phenotype (14);
however, the limiting frequency of
MOG3555-specific TR cells
undoubtedly present in our in vitro culture system suggests that
TR cells are more efficient inhibitors of
Ag-specific than mitogen-induced T cell responses and/or that these
cells become activated as a result of the isolation process.
To investigate the role of TR cells in regulating
the progression of autoimmune diseases, we used a model system in which
the TR cell population in naive C57BL/6 mice was
supplemented before both active and passive induction of EAE.
Augmentation of TR cell numbers by
5075%
(2 x 106 TR cells
transferred to naive recipients normally containing an estimated
2.53 x 106 TR
cells) conferred significant protection against EAE
induction/progression as measured by both disease score and the
promotion of protective Th2 cytokines. In addition, we observed
markedly less CD4+ T cell infiltration into the
CNS at the peak of disease in TR cell recipients
which corresponded with decreased levels of APC infiltration/activation
within the CNS (Fig. 3
). One explanation of these findings is that
TR cells inhibit the expansion of MOG-specific T
cells in peripheral lymphoid organs. This possibility is supported by
the decreased frequency of MOG3555-specific
IL-2-producing cells in TR cell recipients, but
not by the normal numbers of Ag-specific IFN-
ELISPOTs
(Fig. 2
). Alternatively, we detected an increased frequency of cells
producing Th2-like cytokines in the LNs and spleens of
TR cell recipients after disease initiation.
Therefore, it is possible that TR cells
differentially influence either the differentiation or effector
function of Th1 and Th2 cells, with the normal frequency of Th1 cells
better supporting the latter possibility. In addition, the elevated
number of MOG3555-specific Th2 cells in
TR recipients may result from inhibition of
the pathogenic Th1-like responses, subsequently allowing the
progression of bystander Th2 responses. This possibility is further
supported by our findings that mitogenic (anti-CD3 Ab) simulation
of LN and spleen cells isolated from TR
recipients induced a significant increase in the number of cells
producing Th2-like cytokines in comparison with cells stimulated with
the specific MOG3555 peptide (Fig. 2
). However,
further study is necessary to gain a better understanding of the exact
effector mechanisms of TR cells during EAE
disease progression.
Little is currently known about the homing patterns and site(s) of
TR cell function in vivo. During EAE,
TR cells may traffic to the CNS to inhibit the
local activation of myelin-specific autoreactive T cells, a
prerequisite for development of inflammatory demyelination
(11). However, we failed to detect donor
TR within the CNS at a time corresponding with
the peak of disease in non-TR cell recipients
(Fig. 4
A), whereas TR cell populations
were detectable in recipient spleen and LNs. This finding supports the
hypothesis that TR cells may influence the
activation of autoreactive T cells within peripheral lymphoid organs
and/or the homing of activated lymphocytes to the CNS. This latter
hypothesis gains further support from current findings (Fig. 2
F) and those of others (4, 5) showing that
TR cells inhibit the in vivo function of
previously activated T cells. It is possible that the numbers of
regulatory cells within the CNS were below our detection limits or that
the kinetics of TR cell homing was such that
these cells may be detected within the CNS either earlier or later than
currently measured.
Chemokine gradients are an obvious mechanism that may regulate
TR cell trafficking in vivo (8, 15).
In addition, TR homing may be influenced by
differential expression of adhesion molecules. Our findings support
this possibility, because TR cells expressed
elevated levels of both ICAM-1 and P-selectin in comparison with
non-TR cells (Fig. 4
B). The detection
of P-selectin expression on TR cells was
surprising, because previous reports have indicated that expression is
limited to activated platelets and endothelium (16).
However, because P-selectin facilitates endothelium-T cell interactions
(17), P-selectin expression may prove to be one mechanism
promoting the direct interaction of TR cells with
target CD4+ T cells in vivo. This is an
attractive hypothesis in light of previous findings suggesting that
TR cells must directly interact with target T
cells to exert their suppressive phenotype and that P-selectin
glycoprotein ligand-1 is expressed preferentially on Th1 cells
(18). This is supported by our recent studies showing that
TR from P-selectin-deficient mice are
functionally defective in vitro (data not shown). We are currently
exploring the dependence of P-selectin/P-selectin glycoprotein ligand-1
interactions, as well as other adhesion molecules, in governing
TR function both in vitro and in vivo.
| Footnotes |
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2 Address correspondence and reprint requests to Dr. Stephen D. Miller, Department of Microbiology-Immunology, Northwestern University Medical School, 303 East Chicago Avenue, Chicago, IL 60611. E-mail address: s-d-miller{at}northwestern.edu ![]()
3 Abbreviations used in this paper: TR cell, CD4+CD25+ T-regulatory cell; EAE, experimental autoimmune encephalomyelitis; MOG, myelin oligodendrocyte glycoprotein; LN, lymph node. ![]()
Received for publication August 12, 2002. Accepted for publication September 11, 2002.
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E. Gonzalez-Rey, A. Fernandez-Martin, A. Chorny, J. Martin, D. Pozo, D. Ganea, and M. Delgado Therapeutic Effect of Vasoactive Intestinal Peptide on Experimental Autoimmune Encephalomyelitis: Down-Regulation of Inflammatory and Autoimmune Responses Am. J. Pathol., April 1, 2006; 168(4): 1179 - 1188. [Abstract] [Full Text] [PDF] |
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A. P. Kohm, J. S. McMahon, J. R. Podojil, W. S. Begolka, M. DeGutes, D. J. Kasprowicz, S. F. Ziegler, and S. D. Miller Cutting Edge: Anti-CD25 Monoclonal Antibody Injection Results in the Functional Inactivation, Not Depletion, of CD4+CD25+ T Regulatory Cells J. Immunol., March 15, 2006; 176(6): 3301 - 3305. [Abstract] [Full Text] [PDF] |
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T. Koya, T. Kodama, K. Takeda, N. Miyahara, E.-S. Yang, C. Taube, A. Joetham, J.-W. Park, A. Dakhama, and E. W. Gelfand Importance of Myeloid Dendritic Cells in Persistent Airway Disease after Repeated Allergen Exposure Am. J. Respir. Crit. Care Med., January 1, 2006; 173(1): 42 - 55. [Abstract] [Full Text] [PDF] |
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R. Liu, A. La Cava, X.-F. Bai, Y. Jee, M. Price, D. I. Campagnolo, P. Christadoss, T. L. Vollmer, L. Van Kaer, and F.-D. Shi Cooperation of Invariant NKT Cells and CD4+CD25+ T Regulatory Cells in the Prevention of Autoimmune Myasthenia J. Immunol., December 15, 2005; 175(12): 7898 - 7904. [Abstract] [Full Text] [PDF] |
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R. J. DiPaolo, D. D. Glass, K. E. Bijwaard, and E. M. Shevach CD4+CD25+ T Cells Prevent the Development of Organ-Specific Autoimmune Disease by Inhibiting the Differentiation of Autoreactive Effector T Cells J. Immunol., December 1, 2005; 175(11): 7135 - 7142. [Abstract] [Full Text] [PDF] |
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M. S. Wilson, M. D. Taylor, A. Balic, C. A.M. Finney, J. R. Lamb, and R. M. Maizels Suppression of allergic airway inflammation by helminth-induced regulatory T cells J. Exp. Med., November 7, 2005; 202(9): 1199 - 1212. [Abstract] [Full Text] [PDF] |
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A. Chorny, E. Gonzalez-Rey, A. Fernandez-Martin, D. Pozo, D. Ganea, and M. Delgado Vasoactive intestinal peptide induces regulatory dendritic cells with therapeutic effects on autoimmune disorders PNAS, September 20, 2005; 102(38): 13562 - 13567. [Abstract] [Full Text] [PDF] |
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M. J. McGeachy, L. A. Stephens, and S. M. Anderton Natural Recovery and Protection from Autoimmune Encephalomyelitis: Contribution of CD4+CD25+ Regulatory Cells within the Central Nervous System J. Immunol., September 1, 2005; 175(5): 3025 - 3032. [Abstract] [Full Text] [PDF] |
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D. J. Mekala, R. S. Alli, and T. L. Geiger IL-10-dependent infectious tolerance after the treatment of experimental allergic encephalomyelitis with redirected CD4+CD25+ T lymphocytes PNAS, August 16, 2005; 102(33): 11817 - 11822. [Abstract] [Full Text] [PDF] |
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N. Beyersdorf, S. Gaupp, K. Balbach, J. Schmidt, K. V. Toyka, C.-H. Lin, T. Hanke, T. Hunig, T. Kerkau, and R. Gold Selective targeting of regulatory T cells with CD28 superagonists allows effective therapy of experimental autoimmune encephalomyelitis J. Exp. Med., August 1, 2005; 202(3): 445 - 455. [Abstract] [Full Text] [PDF] |
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T. L. Denning, G. Kim, and M. Kronenberg Cutting Edge: CD4+CD25+ Regulatory T Cells Impaired for Intestinal Homing Can Prevent Colitis J. Immunol., June 15, 2005; 174(12): 7487 - 7491. [Abstract] [Full Text] [PDF] |
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Y. Chen, C. Cuda, and L. Morel Genetic Determination of T Cell Help in Loss of Tolerance to Nuclear Antigens J. Immunol., June 15, 2005; 174(12): 7692 - 7702. [Abstract] [Full Text] [PDF] |
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J. G. Heuer, T. Zhang, J. Zhao, C. Ding, M. Cramer, K. L. Justen, S. L. Vonderfecht, and S. Na Adoptive Transfer of In Vitro-Stimulated CD4+CD25+ Regulatory T Cells Increases Bacterial Clearance and Improves Survival in Polymicrobial Sepsis J. Immunol., June 1, 2005; 174(11): 7141 - 7146. [Abstract] [Full Text] [PDF] |
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A. P. Kohm, J. S. Williams, A. L. Bickford, J. S. McMahon, L. Chatenoud, J.-F. Bach, J. A. Bluestone, and S. D. Miller Treatment with Nonmitogenic Anti-CD3 Monoclonal Antibody Induces CD4+ T Cell Unresponsiveness and Functional Reversal of Established Experimental Autoimmune Encephalomyelitis J. Immunol., April 15, 2005; 174(8): 4525 - 4534. [Abstract] [Full Text] [PDF] |
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S. P. Zehntner, C. Brickman, L. Bourbonniere, L. Remington, M. Caruso, and T. Owens Neutrophils That Infiltrate the Central Nervous System Regulate T Cell Responses J. Immunol., April 15, 2005; 174(8): 5124 - 5131. [Abstract] [Full Text] [PDF] |
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G. Matarese, P. B. Carrieri, A. La Cava, F. Perna, V. Sanna, V. De Rosa, D. Aufiero, S. Fontana, and S. Zappacosta Leptin increase in multiple sclerosis associates with reduced number of CD4+CD25+ regulatory T cells PNAS, April 5, 2005; 102(14): 5150 - 5155. [Abstract] [Full Text] [PDF] |
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D. Lundsgaard, T. L. Holm, L. Hornum, and H. Markholst In Vivo Control of Diabetogenic T-Cells by Regulatory CD4+CD25+ T-Cells Expressing Foxp3 Diabetes, April 1, 2005; 54(4): 1040 - 1047. [Abstract] [Full Text] [PDF] |
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S. Schif-Zuck, J. Westermann, N. Netzer, Y. Zohar, M. Meiron, G. Wildbaum, and N. Karin Targeted Overexpression of IL-18 Binding Protein at the Central Nervous System Overrides Flexibility in Functional Polarization of Antigen-Specific Th2 Cells J. Immunol., April 1, 2005; 174(7): 4307 - 4315. [Abstract] [Full Text] [PDF] |
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M. R. Walker, B. D. Carson, G. T. Nepom, S. F. Ziegler, and J. H. Buckner De novo generation of antigen-specific CD4+CD25+ regulatory T cells from human CD4+CD25- cells PNAS, March 15, 2005; 102(11): 4103 - 4108. [Abstract] [Full Text] [PDF] |
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A. Loughry, S. Fairchild, N. Athanasou, J. Edwards, and F. C. Hall Inflammatory arthritis and dermatitis in thymectomized, CD25+ cell-depleted adult mice Rheumatology, March 1, 2005; 44(3): 299 - 308. [Abstract] [Full Text] [PDF] |
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D. J. Mekala and T. L. Geiger Immunotherapy of autoimmune encephalomyelitis with redirected CD4+CD25+ T lymphocytes Blood, March 1, 2005; 105(5): 2090 - 2092. [Abstract] [Full Text] [PDF] |
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A. Matejuk, C. Hopke, A. A. Vandenbark, P. D. Hurn, and H. Offner Middle-Age Male Mice Have Increased Severity of Experimental Autoimmune Encephalomyelitis and Are Unresponsive to Testosterone Therapy J. Immunol., February 15, 2005; 174(4): 2387 - 2395. [Abstract] [Full Text] [PDF] |
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P. E. Rao, A. L. Petrone, and P. D. Ponath Differentiation and Expansion of T Cells with Regulatory Function from Human Peripheral Lymphocytes by Stimulation in the Presence of TGF-{beta} J. Immunol., February 1, 2005; 174(3): 1446 - 1455. [Abstract] [Full Text] [PDF] |
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N. Taylor, K. McConnachie, C. Calder, R. Dawson, A. Dick, J. D. Sedgwick, and J. Liversidge Enhanced Tolerance to Autoimmune Uveitis in CD200-Deficient Mice Correlates with a Pronounced Th2 Switch in Response to Antigen Challenge J. Immunol., January 1, 2005; 174(1): 143 - 154. [Abstract] [Full Text] [PDF] |
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T. Kubo, R. D. Hatton, J. Oliver, X. Liu, C. O. Elson, and C. T. Weaver Regulatory T Cell Suppression and Anergy Are Differentially Regulated by Proinflammatory Cytokines Produced by TLR-Activated Dendritic Cells J. Immunol., December 15, 2004; 173(12): 7249 - 7258. [Abstract] [Full Text] [PDF] |
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J. Kipnis, H. Avidan, R. R. Caspi, and M. Schwartz Dual effect of CD4+CD25+ regulatory T cells in neurodegeneration: A dialogue with microglia PNAS, October 5, 2004; 101(suppl_2): 14663 - 14669. [Abstract] [Full Text] [PDF] |
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N. Sarween, A. Chodos, C. Raykundalia, M. Khan, A. K. Abbas, and L. S. K. Walker CD4+CD25+ Cells Controlling a Pathogenic CD4 Response Inhibit Cytokine Differentiation, CXCR-3 Expression, and Tissue Invasion J. Immunol., September 1, 2004; 173(5): 2942 - 2951. [Abstract] [Full Text] [PDF] |
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M. J. Polanczyk, B. D. Carson, S. Subramanian, M. Afentoulis, A. A. Vandenbark, S. F. Ziegler, and H. Offner Cutting Edge: Estrogen Drives Expansion of the CD4+CD25+ Regulatory T Cell Compartment J. Immunol., August 15, 2004; 173(4): 2227 - 2230. [Abstract] [Full Text] [PDF] |
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M. R. Ehrenstein, J. G. Evans, A. Singh, S. Moore, G. Warnes, D. A. Isenberg, and C. Mauri Compromised Function of Regulatory T Cells in Rheumatoid Arthritis and Reversal by Anti-TNF{alpha} Therapy J. Exp. Med., August 2, 2004; 200(3): 277 - 285. [Abstract] [Full Text] [PDF] |
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Y. E. Latchman, S. C. Liang, Y. Wu, T. Chernova, R. A. Sobel, M. Klemm, V. K. Kuchroo, G. J. Freeman, and A. H. Sharpe PD-L1-deficient mice show that PD-L1 on T cells, antigen-presenting cells, and host tissues negatively regulates T cells PNAS, July 20, 2004; 101(29): 10691 - 10696. [Abstract] [Full Text] [PDF] |
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A. C. Anderson, J. Reddy, R. Nazareno, R. A. Sobel, L. B. Nicholson, and V. K. Kuchroo IL-10 Plays an Important Role in the Homeostatic Regulation of the Autoreactive Repertoire in Naive Mice J. Immunol., July 15, 2004; 173(2): 828 - 834. [Abstract] [Full Text] [PDF] |
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J. Kipnis, M. Cardon, H. Avidan, G. M. Lewitus, S. Mordechay, A. Rolls, Y. Shani, and M. Schwartz Dopamine, through the Extracellular Signal-Regulated Kinase Pathway, Downregulates CD4+CD25+ Regulatory T-Cell Activity: Implications for Neurodegeneration J. Neurosci., July 7, 2004; 24(27): 6133 - 6143. [Abstract] [Full Text] [PDF] |
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S. Vigouroux, E. Yvon, E. Biagi, and M. K. Brenner Antigen-induced regulatory T cells Blood, July 1, 2004; 104(1): 26 - 33. [Abstract] [Full Text] [PDF] |
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B. K. Choi, J. S. Bae, E. M. Choi, W. J. Kang, S. Sakaguchi, D. S. Vinay, and B. S. Kwon 4-1BB-dependent inhibition of immunosuppression by activated CD4+CD25+ T cells J. Leukoc. Biol., May 1, 2004; 75(5): 785 - 791. [Abstract] [Full Text] [PDF] |
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A. P. Kohm, J. S. Williams, and S. D. Miller Cutting Edge: Ligation of the Glucocorticoid-Induced TNF Receptor Enhances Autoreactive CD4+ T Cell Activation and Experimental Autoimmune Encephalomyelitis J. Immunol., April 15, 2004; 172(8): 4686 - 4690. [Abstract] [Full Text] [PDF] |
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V. Viglietta, C. Baecher-Allan, H. L. Weiner, and D. A. Hafler Loss of Functional Suppression by CD4+CD25+ Regulatory T Cells in Patients with Multiple Sclerosis J. Exp. Med., April 5, 2004; 199(7): 971 - 979. [Abstract] [Full Text] [PDF] |
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S. Suvas, A. K. Azkur, B. S. Kim, U. Kumaraguru, and B. T. Rouse CD4+CD25+ Regulatory T Cells Control the Severity of Viral Immunoinflammatory Lesions J. Immunol., April 1, 2004; 172(7): 4123 - 4132. [Abstract] [Full Text] [PDF] |
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X. Zhang, D. N. Koldzic, L. Izikson, J. Reddy, R. F. Nazareno, S. Sakaguchi, V. K. Kuchroo, and H. L. Weiner IL-10 is involved in the suppression of experimental autoimmune encephalomyelitis by CD25+CD4+ regulatory T cells Int. Immunol., February 1, 2004; 16(2): 249 - 256. [Abstract] [Full Text] [PDF] |
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Y. Wang, M. Lobigs, E. Lee, and A. Mullbacher CD8+ T Cells Mediate Recovery and Immunopathology in West Nile Virus Encephalitis J. Virol., December 15, 2003; 77(24): 13323 - 13334. [Abstract] [Full Text] [PDF] |
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B. E. Theien, C. L. Vanderlugt, C. Nickerson-Nutter, M. Cornebise, D. M. Scott, S. J. Perper, E. T. Whalley, and S. D. Miller Differential effects of treatment with a small-molecule VLA-4 antagonist before and after onset of relapsing EAE Blood, December 15, 2003; 102(13): 4464 - 4471. [Abstract] [Full Text] [PDF] |
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D. Avichezer, R. S. Grajewski, C.-C. Chan, M. J. Mattapallil, P. B. Silver, J. A. Raber, G. I. Liou, B. Wiggert, G. M. Lewis, L. A. Donoso, et al. An Immunologically Privileged Retinal Antigen Elicits Tolerance: Major Role for Central Selection Mechanisms J. Exp. Med., December 1, 2003; 198(11): 1665 - 1676. [Abstract] [Full Text] [PDF] |
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S. Vigouroux, E. Yvon, H.-J. Wagner, E. Biagi, G. Dotti, U. Sili, C. Lira, C. M. Rooney, and M. K. Brenner Induction of Antigen-Specific Regulatory T Cells following Overexpression of a Notch Ligand by Human B Lymphocytes J. Virol., October 15, 2003; 77(20): 10872 - 10880. [Abstract] [Full Text] [PDF] |
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S. Gregori, N. Giarratana, S. Smiroldo, and L. Adorini Dynamics of Pathogenic and Suppressor T Cells in Autoimmune Diabetes Development J. Immunol., October 15, 2003; 171(8): 4040 - 4047. [Abstract] [Full Text] [PDF] |
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D. L. Sewell, E. K. Reinke, D. O. Co, L. H. Hogan, R. B. Fritz, M. Sandor, and Z. Fabry Infection with Mycobacterium bovis BCG Diverts Traffic of Myelin Oligodendroglial Glycoprotein Autoantigen-Specific T Cells Away from the Central Nervous System and Ameliorates Experimental Autoimmune Encephalomyelitis Clin. Vaccine Immunol., July 1, 2003; 10(4): 564 - 572. [Abstract] [Full Text] [PDF] |
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K. C. Dowdell, D. J. Cua, E. Kirkman, and S. A. Stohlman NK Cells Regulate CD4 Responses Prior to Antigen Encounter J. Immunol., July 1, 2003; 171(1): 234 - 239. [Abstract] [Full Text] [PDF] |
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