期刊
IMMUNITY
卷 39, 期 4, 页码 687-696出版社
CELL PRESS
DOI: 10.1016/j.immuni.2013.08.019
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资金
- NIAID NIH HHS [R01 AI019335] Funding Source: Medline
Tissue-resident memory T (Trm) cells represent a population of memory CD8(+) T cells that can act as first responders to local infection. The mechanisms regulating the formation and maintenance of intestinal Trm cells remain elusive. Here we showed that transforming growth factor-beta (TGF-beta) controlled both stages of gut Trm cell differentiation through different mechanisms. During the formation phase of Trm cells, TGF-beta signaling inhibited the migration of effector CD8(+) T cells from the spleen to the gut by dampening the expression of integrin alpha 4 beta 7. During the maintenance phase, TGF-beta was required for the retention of intestinal Trm cells at least in part through the induction of integrins alpha E beta 7 and alpha 1, as well as CD69. Thus, the cytokine acts to control cytotoxic T cell differentiation in lymphoid and peripheral organs.
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