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1
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0026778697
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Immunosuppression in vivo by a soluble form of the CTLA-4 T cell activation molecule
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Linsley P.S., Wallace P.M., Johnson J., Gibson M.G., Greene J.L., Ledbetter J.A., Singh C., Tepper M.A. Immunosuppression in vivo by a soluble form of the CTLA-4 T cell activation molecule. Science. 257:1992;792-795.
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Linsley, P.S.1
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Ledbetter, J.A.6
Singh, C.7
Tepper, M.A.8
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2
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0033135564
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CTLA4Ig-mediated blockade of T-cell costimulation in patients with psoriasis vulgaris
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This study reports on the first use of CTLA-4Ig in humans, against the T-cell-mediated autoimmune disease psoriasis vulgaris. Even after CTLA-4Ig treatment has stopped and it is no longer detectable in serum, clinical benefits are seen; however, global T cell responses appear to be unaffected. The results are promising for the use of CTLA-4Ig in MS and other T-cell-mediated autoimmune disorders
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Abrams J.R., Lebwohl M.G., Guzzo C.A., Jegasothy B.V., Goldfarb M.T., Goffe B.S., Menter A., Lowe N.J., Krueger G., Brown M.J.et al. CTLA4Ig-mediated blockade of T-cell costimulation in patients with psoriasis vulgaris. J Clin Invest. 103:1999;1243-1252. This study reports on the first use of CTLA-4Ig in humans, against the T-cell-mediated autoimmune disease psoriasis vulgaris. Even after CTLA-4Ig treatment has stopped and it is no longer detectable in serum, clinical benefits are seen; however, global T cell responses appear to be unaffected. The results are promising for the use of CTLA-4Ig in MS and other T-cell-mediated autoimmune disorders.
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Abrams, J.R.1
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0033519661
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Transplantation of anergic histoincompatible bone marrow allografts
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Guinan E.C., Boussiotis V.A., Neuberg D., Brennan L.L., Hirano N., Nadler L.M., Gribben J.G. Transplantation of anergic histoincompatible bone marrow allografts. N Engl J Med. 340:1999;1704-1714.
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Guinan, E.C.1
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5
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0032145434
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Kinetics of expression of costimulatory molecules and their ligands in murine relapsing experimental autoimmune encephalomyelitis in vivo
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The in vivo expression of various costimulatory molecules during the course of EAE disease, remission and relapse is examined in MBP-induced EAE in (PLJ x SJL)F1 mice. B7-2 expression was seen during acute disease and during relapse whereas B7-1 was expressed by relatively few cells and only during remission. Analysis using a fluorescence-activated cell sorter confirmed that astrocytes and infiltrating cells stained positive for B7-2 during relapse whereas both astrocytes and neurons stained positive for B7-1 only during remission. In this model of EAE, B7-2 appears to be the dominant costimulatory molecule associated with disease activity
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Issazadeh S., Navikas V., Schaub M., Sayegh M., Khoury S. Kinetics of expression of costimulatory molecules and their ligands in murine relapsing experimental autoimmune encephalomyelitis in vivo. J Immunol. 161:1998;1104-1112. The in vivo expression of various costimulatory molecules during the course of EAE disease, remission and relapse is examined in MBP-induced EAE in (PLJ x SJL)F1 mice. B7-2 expression was seen during acute disease and during relapse whereas B7-1 was expressed by relatively few cells and only during remission. Analysis using a fluorescence-activated cell sorter confirmed that astrocytes and infiltrating cells stained positive for B7-2 during relapse whereas both astrocytes and neurons stained positive for B7-1 only during remission. In this model of EAE, B7-2 appears to be the dominant costimulatory molecule associated with disease activity.
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J Immunol
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Issazadeh, S.1
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6
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0031802828
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Tissue-specific up-regulation of B7-1 expression and function during the course of murine relapsing experimental autoimmune encephalomyelitis
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In EAE induced in SJL mice using PLP 139-151, immunohistochemical studies found that B7-1 expression correlated with disease activity. When APCs isolated from the CNS of diseased mice were used as APCs in vitro, mAb against B7-1 but not B7-2 abrogated APC function - further correlating selective B7-1 expression with costimulation of T cells. The data indicate that B7-1 and B7-2 can be selectively associated with the activation of autoreactive T cells
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Karandikar N.J., Vanderlugt C.L., Eagar T., Tan L., Bluestone J.A., Miller S.D. Tissue-specific up-regulation of B7-1 expression and function during the course of murine relapsing experimental autoimmune encephalomyelitis. J Immunol. 161:1998;192-199. In EAE induced in SJL mice using PLP 139-151, immunohistochemical studies found that B7-1 expression correlated with disease activity. When APCs isolated from the CNS of diseased mice were used as APCs in vitro, mAb against B7-1 but not B7-2 abrogated APC function - further correlating selective B7-1 expression with costimulation of T cells. The data indicate that B7-1 and B7-2 can be selectively associated with the activation of autoreactive T cells.
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Karandikar, N.J.1
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7
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0028814279
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Role of B7:CD28/CTLA-4 in the induction of chronic relapsing experimental allergic encephalomyelitis
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Perrin P.J., Scott D., Quigley L., Albert P.S., Feder O., Gray G.S., Abe R., June C.H., Racke M.K. Role of B7:CD28/CTLA-4 in the induction of chronic relapsing experimental allergic encephalomyelitis. J Immunol. 154:1995;1481-1490.
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8
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0028785417
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Distinct roles for B7-1 (CD-80) and B7-2 (CD-86) in the initiation of experimental allergic encephalomyelitis
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Racke M.K., Scott D.E., Quigley L., Gray G.S., Abe R., June C.H., Perrin P.J. Distinct roles for B7-1 (CD-80) and B7-2 (CD-86) in the initiation of experimental allergic encephalomyelitis. J Clin Invest. 96:1995;2195-2203.
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9
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0032843342
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Studies in B7-deficient mice reveal a critical role for B7 costimulation in both initiation and effector phases of EAE
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-/-mice and into wild-type mice. Clinical and histologic EAE were markedly reduced in the B7-deficient animals, demonstrating conclusively that B7 costimulation has a critical role in the effector phase of T cell activation within the CNS
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-/-mice and into wild-type mice. Clinical and histologic EAE were markedly reduced in the B7-deficient animals, demonstrating conclusively that B7 costimulation has a critical role in the effector phase of T cell activation within the CNS.
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0033179230
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Blockade of CD28 during in vitro activation of encephalitogenic T cells or after disease onset ameliorates experimental autoimmune encephalomyelitis
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Treatment of mice after disease onset with blocking anti-CD28 Fab fragments in vivo ameliorated disease severity and prevented clinical disease relapses. These results emphasize that B7 costimulation through CD28 plays a role in the effector stage of autoimmune disease in the CNS
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Perrin P.J., June C.H., Maldonado J.H., Ratts R.B., Racke M.K. Blockade of CD28 during in vitro activation of encephalitogenic T cells or after disease onset ameliorates experimental autoimmune encephalomyelitis. J Immunol. 163:1999;1704-1710. Treatment of mice after disease onset with blocking anti-CD28 Fab fragments in vivo ameliorated disease severity and prevented clinical disease relapses. These results emphasize that B7 costimulation through CD28 plays a role in the effector stage of autoimmune disease in the CNS.
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Perrin, P.J.1
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11
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0033561661
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CD28 costimulation is crucial for the development of spontaneous autoimmune encephalomyelitis
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Breeding of Rag-1-deficient mice with mice transgenic for a TCR specific for MBP results in offspring that develop spontaneous EAE. When these mice were crossed with CD28-deficient mice, the TCR-transgenic mice deficient in Rag-1 and CD28 no longer developed spontaneous disease. Nonetheless, depending on the concentration of MBP peptide used, T cells obtained from these mice could proliferate and produce IL-2 when stimulated in vitro. The data suggest that CD28 signaling regulates the threshold for autoreactive T cell activation in vivo
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Oliveira-dos-Santos A.J., Ho A., Tada Y., Lafaille J.J., Tonegawa S., Mak T.W., Penninger J.M. CD28 costimulation is crucial for the development of spontaneous autoimmune encephalomyelitis. J Immunol. 162:1999;4490-4495. Breeding of Rag-1-deficient mice with mice transgenic for a TCR specific for MBP results in offspring that develop spontaneous EAE. When these mice were crossed with CD28-deficient mice, the TCR-transgenic mice deficient in Rag-1 and CD28 no longer developed spontaneous disease. Nonetheless, depending on the concentration of MBP peptide used, T cells obtained from these mice could proliferate and produce IL-2 when stimulated in vitro. The data suggest that CD28 signaling regulates the threshold for autoreactive T cell activation in vivo.
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Oliveira-Dos-Santos, A.J.1
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Croxford J.L., O'Neill J.K., Ali R.R., Browne K., Byrnes A.P., Dallman M.J., Wood M.J., Fedlmann M., Baker D. Local gene therapy with CTLA4-immunoglobulin fusion protein in experimental allergic encephalomyelitis. Eur J Immunol. 28:1998;3904-3916.
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0031892792
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Expansion of autoreactive T cells in multiple sclerosis is independent of exogenous B7 costimulation
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+ MS patients and normal individuals. Clonal expansion of MBP-reactive T cells from normal individuals required B7 costimulation whereas MBP-reactive T cells obtained from MS patients readily proliferated in response to stimulation in the absence of B7 costimulation. The results indicate that T cells believed to be involved in MS pathogenesis are relatively independent of B7 costimulation
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+ MS patients and normal individuals. Clonal expansion of MBP-reactive T cells from normal individuals required B7 costimulation whereas MBP-reactive T cells obtained from MS patients readily proliferated in response to stimulation in the absence of B7 costimulation. The results indicate that T cells believed to be involved in MS pathogenesis are relatively independent of B7 costimulation.
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Scholz, C.1
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14
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0032519421
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The authors found that the addition of anti-CD28 mAb or CTLA-4Ig could prevent the clonal expansion of MBP-reactive T cells when using PBMCs from normal individuals but not from MS patients
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Lovett-Racke A.E., Trotter J.L., Lauber J., Perrin P.J., June C.H., Racke M.K. Decreased dependence of myelin basic protein-reactive T cells on CD28-mediated costimulation in multiple sclerosis patients. A marker of activated/memory T cells. J Clin Invest. 101:1998;725-730. The authors found that the addition of anti-CD28 mAb or CTLA-4Ig could prevent the clonal expansion of MBP-reactive T cells when using PBMCs from normal individuals but not from MS patients.
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Studies using antigen-presenting cells lacking expression of both B7-1 (CD80) and B7-2 (CD86) show distinct requirements for B7 molecules during priming versus restimulation of Th2 but not Th1 cytokine production
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Schweitzer A.N., Sharpe A.H. Studies using antigen-presenting cells lacking expression of both B7-1 (CD80) and B7-2 (CD86) show distinct requirements for B7 molecules during priming versus restimulation of Th2 but not Th1 cytokine production. J Immunol. 161:1998;2762-2771.
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Lymphoproliferative disorder in CTLA-4 knockout mice is characterized by CD28-regulated activation of Th2 responses
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Khattri R., Auger J.A., Griffin M.D., Sharpe A.H., Bluestone J.A. Lymphoproliferative disorder in CTLA-4 knockout mice is characterized by CD28-regulated activation of Th2 responses. J Immunol. 162:1999;5784-5791.
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(1999)
J Immunol
, vol.162
, pp. 5784-5791
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Khattri, R.1
Auger, J.A.2
Griffin, M.D.3
Sharpe, A.H.4
Bluestone, J.A.5
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36
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0033198045
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The role of CTLA-4 in regulating Th2 differentiation
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-/- mice were crossed with CTLA-4-deficient mice to examine the role of CTLA-4 in Th cell differentiation. In vitro stimulation of purified, naïve, CTLA-4-deficient DO11 T cells led to Th2 differentiation whereas wild-type DO11 T cells developed into Th1 cells. In addition the T cells from the mice deficient in B7-1, B7-2 and CTLA-4 also differentiated into Th2 cells when stimulated with wild-type APCs in vitro. Administration of anti-CD28 mAb in vivo to mice deficient in B7-1, B7-2 and CTLA-4 induced IL-4 secretion but this was not seen when anti-CD28 mAb was given to wild-type mice. These data demonstrate that B7 costimulation through CD28 promotes Th2 differentiation whereas B7 engagement of CTLA-4 attenuates Th2 differentiation
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-/- mice were crossed with CTLA-4-deficient mice to examine the role of CTLA-4 in Th cell differentiation. In vitro stimulation of purified, naïve, CTLA-4-deficient DO11 T cells led to Th2 differentiation whereas wild-type DO11 T cells developed into Th1 cells. In addition the T cells from the mice deficient in B7-1, B7-2 and CTLA-4 also differentiated into Th2 cells when stimulated with wild-type APCs in vitro. Administration of anti-CD28 mAb in vivo to mice deficient in B7-1, B7-2 and CTLA-4 induced IL-4 secretion but this was not seen when anti-CD28 mAb was given to wild-type mice. These data demonstrate that B7 costimulation through CD28 promotes Th2 differentiation whereas B7 engagement of CTLA-4 attenuates Th2 differentiation.
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(1999)
J Immunol
, vol.163
, pp. 2634-2639
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Oosterwegel, M.A.1
Mandelbrot, D.A.2
Boyd, S.D.3
Lorsbach, R.B.4
Jarrett, D.Y.5
Abbas, A.K.6
Sharpe, A.H.7
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