Essential role for retinoic acid in the promotion of CD4(+) T cell effector responses via retinoic acid receptor alpha.

Essential role for retinoic acid in the promotion of CD4(+) T cell effector responses via retinoic acid receptor alpha.
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DOI:
10.1016/j.immuni.2011.03.003
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发表时间:
2011-03-25
期刊:
影响因子:
32.4
通讯作者:
Belkaid Y
Belkaid Y
中科院分区:
医学1区
文献类型:
--
作者:
Hall JA;Cannons JL;Grainger JR;Dos Santos LM;Hand TW;Naik S;Wohlfert EA;Chou DB;Oldenhove G;Robinson M;Grigg ME;Kastenmayer R;Schwartzberg PL;Belkaid Y

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维生素A及其代谢产物视黄酸(RA)最近被认为通过外周诱导调节性T细胞参与免疫稳态的调节。在这里,我们表明,RA也需要引起促炎性CD 4+辅助性T细胞对感染和粘膜接种的反应。视黄酸受体α(RARα)是这些作用的关键介质。引人注目的是,RAR信号传导的拮抗和RARα(Rara−/−)的缺陷导致细胞自主性CD 4 + T细胞活化缺陷。总之,这些发现揭示了RA/RARα轴在适应性免疫的调节和炎症臂的发展中的基本作用,并确立了营养状态作为适应性T细胞应答的广泛调节因子。
Vitamin A and its metabolite, retinoic acid (RA), have recently been implicated in the regulation of immune homeostasis via the peripheral induction of regulatory T cells. Here we show that RA is also required to elicit proinflammatory CD4+ helper T cell responses to infection and mucosal vaccination. Retinoic acid receptor alpha (RARα) is the critical mediator of these effects. Strikingly, antagonism of RAR signaling and deficiency in RARα(Rara−/−) results in a cell autonomous CD4+ T cell activation defect. Altogether, these findings reveal a fundamental role for the RA/RARα axis in the development of both regulatory and inflammatory arms of adaptive immunity and establish nutritional status as a broad regulator of adaptive T cell responses.
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