TGF-β cytokine signaling promotes CD8+ T cell development and low-affinity CD4+ T cell homeostasis by regulation of interleukin-7 receptor α expression.
TGF-β cytokine signaling promotes CD8+ T cell development and low-affinity CD4+ T cell homeostasis by regulation of interleukin-7 receptor α expression.
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DOI:
10.1016/j.immuni.2013.07.016
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发表时间:
2013-08-22
期刊:
影响因子:
32.4
通讯作者:
Li MO
中科院分区:
文献类型:
--
作者:
Ouyang W;Oh SA;Ma Q;Bivona MR;Zhu J;Li MO
Interleukin 7 receptor α-chain (IL-7Rα) is induced upon T cell positive selection, and controls thymic CD8-lineage specification and peripheral naïve T cell homeostasis. How IL-7Rα expression is regulated in developing thymocytes is unclear. Here we showed that transforming growth factor-β (TGF-β) signaling promoted IL-7Rα expression and CD8+ T cell differentiation. In addition, TGF-β signaling was required for high IL-7Rα expression in CD4+ T cells bearing low-affinity T cell receptors, and the abrogation of TGF-β receptor expression led to failed maintenance of peripheral CD4+ T cells. Compromised IL-7Rα expression in TGF-β receptor-deficient T cells was associated with increased expression of the Il7ra transcriptional repressor, Gfi-1. IL-7Rα transgenesis or T cell-specific ablation of Gfi-1 restored IL-7Rα expression, and largely ameliorated the development and homeostasis defects of TGF-β receptor-deficient T cells. These findings reveal functions for TGF-β signaling in the control of IL-7Rα expression and in promoting T cell repertoire diversification.
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DOI:
10.1038/nri2416
发表时间:
2008-10
期刊:
Nature reviews. Immunology
影响因子:
--
作者:
通讯作者:
--
影响因子:
30.5
作者:
通讯作者:
--
影响因子:
32.4
作者:
Marie, Julien C.;Liggitt, Denny;Rudensky, Alexander Y.
通讯作者:
Rudensky, Alexander Y.
影响因子:
32.4
作者:
Li, Ming O.;Wan, Yisong Y.;Flavell, Richard A.
通讯作者:
Flavell, Richard A.
影响因子:
32.4
作者:
Chong, MMW;Cornish, AL;Kay, TWH
通讯作者:
Kay, TWH