期刊
IMMUNOLOGICAL REVIEWS
卷 231, 期 -, 页码 225-240出版社
WILEY
DOI: 10.1111/j.1600-065X.2009.00817.x
关键词
T cells; anergy; signal transduction; transcription factors; NFAT
类别
资金
- National Institutes of Health [AI059738, GM007288]
Cells that escape negative selection in the thymus must be inactivated or eliminated in the periphery through a series of mechanisms that include the induction of anergy, dominant suppression by regulatory T cells, and peripheral deletion of self-reactive T cells. Calcium signaling plays a central role in the induction of anergy in T cells, which become functionally inactivated and incapable of proliferating and expressing cytokines following antigen re-encounter. Suboptimal stimulation of T cells results in the activation of a calcium/calcineurin/nuclear factor of activated T cells-dependent cell-intrinsic program of self-inactivation. The proteins encoded by those genes are required to impose a state of functional unresponsiveness through different mechanisms that include downregulation of T-cell receptor signaling and inhibition of cytokine transcription.
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