The aryl hydrocarbon receptor regulates gut immunity through modulation of innate lymphoid cells.

The aryl hydrocarbon receptor regulates gut immunity through modulation of innate lymphoid cells.
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DOI:
10.1016/j.immuni.2011.11.011
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发表时间:
2012-01-27
期刊:
影响因子:
32.4
通讯作者:
Zhou L
Zhou L
中科院分区:
医学1区
文献类型:
--
作者:
Qiu J;Heller JJ;Guo X;Chen ZM;Fish K;Fu YX;Zhou L

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Innate lymphoid cells (ILCs) expressing the nuclear receptor RORγt are essential for gut immunity presumably through production of interleukin (IL)-22. The molecular mechanism underlying the development of RORγt+ ILCs is poorly understood. Here, we have shown that the aryl hydrocarbon receptor (Ahr) plays an essential role in RORγt+ ILC maintenance and function. Expression of Ahr in the hematopoietic compartment was important for accumulation of adult but not fetal intestinal RORγt+ ILCs. Without Ahr, RORγt+ ILCs had increased apoptosis and less production of IL-22. RORγt interacted with Ahr and promoted Ahr binding at the Il22 locus. Upon IL-23 stimulation, Ahr-deficient RORγt+ ILCs had reduced IL-22 expression, consistent with downregulation of IL-23R in those cells. Ahr-deficient mice succumbed to Citrobacter rodentium infection, while ectopic expression of IL-22 protected animals from early mortality. Our data uncover a previously unrecognized physiological role for Ahr in promoting innate gut immunity by regulating RORγt+ ILCs.
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