Commensal-dependent expression of IL-25 regulates the IL-23-IL-17 axis in the intestine.

Commensal-dependent expression of IL-25 regulates the IL-23-IL-17 axis in the intestine.
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DOI:
10.1084/jem.20080720
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发表时间:
2008-09-29
影响因子:
15.3
通讯作者:
Artis, David
Artis, David
中科院分区:
医学1区
文献类型:
--
作者:
Zaph, Colby;Du, Yurong;Saenz, Steven A.;Nair, Meera G.;Perrigoue, Jacqueline G.;Taylor, Betsy C.;Troy, Amy E.;Kobuley, Dmytro E.;Kastelein, Robert A.;Cua, Daniel J.;Yu, Yimin;Artis, David

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Alterations in the composition of intestinal commensal bacteria are associated with enhanced susceptibility to multiple inflammatory diseases, including those conditions associated with interleukin (IL)-17–producing CD4+ T helper (Th17) cells. However, the relationship between commensal bacteria and the expression of proinflammatory cytokines remains unclear. Using germ-free mice, we show that the frequency of Th17 cells in the large intestine is significantly elevated in the absence of commensal bacteria. Commensal-dependent expression of the IL-17 family member IL-25 (IL-17E) by intestinal epithelial cells limits the expansion of Th17 cells in the intestine by inhibiting expression of macrophage-derived IL-23. We propose that acquisition of, or alterations in, commensal bacteria influences intestinal immune homeostasis via direct regulation of the IL-25–IL-23–IL-17 axis.
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