Taming tissue-specific T cells: CTLA-4 reins in self-reactive T cells.

Taming tissue-specific T cells: CTLA-4 reins in self-reactive T cells.
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DOI:
10.1038/ni0210-109
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发表时间:
2010-02
期刊:
影响因子:
30.5
通讯作者:
--
中科院分区:
医学1区
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--
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CTLA-4是一种有效的共抑制分子,对外周T细胞耐受性至关重要。本期的一份报告揭示了靶组织中CTLA-4缺陷型CD 4 + T细胞的自身抗原特异性。体内研究表明,自身反应性效应细胞的CTLA-4表达足以限制其向靶组织中的浸润,并且表达CTLA-4的调节性T细胞可以控制自身抗原特异性效应T细胞。因此,这些发现提供了证据表明CTLA-4通过控制常规T细胞和调节性T细胞发挥其关键的免疫调节功能。
CTLA-4 is a potent co-inhibitory molecule that is critical for peripheral T cell tolerance. A report in this issue reveals the autoantigen-specific nature of CTLA-4-deficient CD4+ T cells within target tissue. In vivo studies demonstrate that CTLA-4 expression by self-reactive effector cells is sufficient to limit their infiltration into target tissue and that regulatory T cells expressing CTLA-4 can control autoantigen-specific effector T cells. Thus, these findings provide evidence that CTLA-4 exerts its critical immunoregulatory functions by controlling conventional T cells as well as regulatory T cells.
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