Role of T cell TGF-beta signaling in intestinal cytokine responses and helminthic immune modulation.

Role of T cell TGF-beta signaling in intestinal cytokine responses and helminthic immune modulation.
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DOI:
10.1002/eji.200838956
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发表时间:
2009-07
影响因子:
5.4
通讯作者:
Weinstock, Joel V.
Weinstock, Joel V.
中科院分区:
医学3区
文献类型:
--
作者:
Ince, M. Nedim;Elliott, David E.;Setiawan, Tommy;Metwali, Ahmed;Blum, Arthur;Chen, Hung-lin;Urban, Joseph F.;Flavell, Richard A.;Weinstock, Joel V.

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Colonization with helminthic parasites induces mucosal regulatory cytokines, like IL-10 or TGF-β that are important in suppressing colitis. Helminths induce mucosal T cell IL-10 secretion and regulate lamina propria mononuclear cell Th1 cytokine generation in an IL-10 dependent manner in wild-type mice. Helminths also stimulate mucosal TGF-β release. As TGF-β exerts major regulatory effects on T lymphocytes, we investigated the role of T lymphocyte TGF-β signaling in helminthic modulation of intestinal immunity. T cell TGF-β signaling is interrupted in TGF-βRII DN mice by T cell-specific over-expression of a dominant negative TGF-β receptor II. We studied lamina propria mononuclear cell responses in wild-type and TGF-βRII DN mice that were uninfected or colonized with the nematode, Heligmosomoides polygyrus. Our results indicate an essential role of T cell TGF-β signaling in limiting mucosal Th1 and Th2 responses. Furthermore, we demonstrate that helminthic induction of intestinal T cell IL-10 secretion requires intact T cell TGF-β signaling pathway. Helminths fail to curtail robust, dysregulated intestinal Th1 cytokine production and chronic colitis in TGF-βRII DN mice. Thus, T cell TGF-β signaling is essential for helminthic stimulation of mucosal IL-10 production, helminthic modulation of intestinal interferon-γ generation and H. polygyrus-mediated suppression of chronic colitis.
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