Prostaglandin E(2) promotes intestinal inflammation via inhibiting microbiota-dependent regulatory T cells.

Prostaglandin E(2) promotes intestinal inflammation via inhibiting microbiota-dependent regulatory T cells.
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前列腺素E(2)通过抑制微生物群依赖性调节性T细胞促进肠道炎症。

DOI:
10.1126/sciadv.abd7954
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发表时间:
2021-03
期刊:
影响因子:
13.6
通讯作者:
Yao C
Yao C
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Crittenden S;Goepp M;Pollock J;Robb CT;Smyth DJ;Zhou Y;Andrews R;Tyrrell V;Gkikas K;Adima A;O'Connor RA;Davies L;Li XF;Yao HX;Ho GT;Zheng X;Mair A;Vermeren S;Qian BZ;Mole DJ;Gerasimidis K;Schwarze JKJ;Breyer RM;Arends MJ;O'Donnell VB;Iredale JP;Anderton SM;Narumiya S;Maizels RM;Rossi AG;Howie SE;Yao C

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PGE 2通过对单核吞噬细胞和肠道微生物群的作用抑制THP并促进肠道炎症。肠道微生物群从根本上调节肠道内稳态和疾病,部分是通过涉及调节T细胞(Treg)的机制,但如何在生理上控制微生物群-Treg串扰是不完全确定的。在这里,我们报告了前列腺素E2(PGE 2),一种众所周知的炎症介质,以依赖于肠道微生物群的方式抑制粘膜TdR。PGE 2通过其受体EP 4减少Treg有利的肠道微生物群。通过PGE 2-EP 4信号转导修饰的肠道微生物群的转移调节粘膜Treg应答并加剧肠道炎症。从机制上讲,PGE 2修饰的微生物群调节肠道单核吞噬细胞和I型干扰素信号。单核吞噬细胞的消耗或I型干扰素受体的缺乏减少了PGE 2依赖性Treg抑制。总之,我们的研究结果提供了新的证据,表明PGE 2介导的微生物-Treg通讯中断会促进肠道炎症。
PGE2 inhibits Tregs and promotes intestinal inflammation through actions on mononuclear phagocytes and the gut microbiota. The gut microbiota fundamentally regulates intestinal homeostasis and disease partially through mechanisms that involve modulation of regulatory T cells (Tregs), yet how the microbiota-Treg cross-talk is physiologically controlled is incompletely defined. Here, we report that prostaglandin E2 (PGE2), a well-known mediator of inflammation, inhibits mucosal Tregs in a manner depending on the gut microbiota. PGE2 through its receptor EP4 diminishes Treg-favorable commensal microbiota. Transfer of the gut microbiota that was modified by PGE2-EP4 signaling modulates mucosal Treg responses and exacerbates intestinal inflammation. Mechanistically, PGE2-modified microbiota regulates intestinal mononuclear phagocytes and type I interferon signaling. Depletion of mononuclear phagocytes or deficiency of type I interferon receptor diminishes PGE2-dependent Treg inhibition. Together, our findings provide emergent evidence that PGE2-mediated disruption of microbiota-Treg communication fosters intestinal inflammation.
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