Cutting edge: blockade of the CD28/B7 costimulatory pathway inhibits intestinal allograft rejection mediated by CD4+ but not CD8+ T cells.

Cutting edge: blockade of the CD28/B7 costimulatory pathway inhibits intestinal allograft rejection mediated by CD4+ but not CD8+ T cells.
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最前沿:阻断 CD28/B7 共刺激通路可抑制 CD4 T 细胞介导的肠道同种异体移植排斥反应,但不能抑制 CD8 T 细胞介导的排斥反应。

DOI:
10.4049/jimmunol.163.5.2358
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发表时间:
1999
影响因子:
4.4
通讯作者:
J. Bluestone
J. Bluestone
中科院分区:
医学2区
文献类型:
--
作者:
K. Newell;G. He;Zhong Guo;O. Kim;G. Szot;I. Rulifson;Ping Zhou;J. Hart;J. Thistlethwaite;J. Bluestone

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The effect of blocking the CD28/B7 costimulatory pathway on intestinal allograft rejection was examined in mice. Murine CTLA4Ig failed to prevent the rejection of allografts transplanted into wild-type or CD4 knockout (KO) mice but did inhibit allograft rejection by CD8 KO recipients. This effect was associated with decreased intragraft mRNA for IFN-gamma and TNF-alpha and increased mRNA for IL-4 and IL-5. This altered pattern of cytokine production was not observed in allografts from murine CTLA4Ig-treated CD4 KO mice. These data demonstrate that blockade of the CD28/B7 pathway has different effects on intestinal allograft rejection mediated by CD4+ and CD8+ T cells and suggest that these T cell subsets have different costimulatory requirements in vivo. The results also suggest that the inhibition of CD4+ T cell-mediated allograft rejection by CTLA4Ig may be related to down-regulation of Th1 cytokines and/or up-regulation of Th2 cytokines.
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