Resistin-like molecule alpha enhances myeloid cell activation and promotes colitis.
Resistin-like molecule alpha enhances myeloid cell activation and promotes colitis.
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DOI:
10.1016/j.jaci.2008.10.017
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发表时间:
2008-12
影响因子:
14.2
通讯作者:
Rothenberg, Marc E.
中科院分区:
文献类型:
--
作者:
Munitz, Ariel;Waddell, Amanda;Seidu, Luqman;Ahrens, Richard;Hogan, Simon P.;Rothenberg, Marc E.
关键词:
Resistin-like molecule (Relm) α is a secreted protein and a hallmark signature gene for alternatively activated macrophages. Relm-α is highly induced by allergic inflammatory triggers and perceived to promote tissue repair. Yet the function of Relm-α remains unknown. We sough to determine the role of Relm-α in dextran sodium sulfate (DSS)–induced colonic injury. The cellular source of Relm-α was determined after oral DSS-induced colitis. Retnla−/− mice were generated, subjected to DSS treatment, and monitored for disease progression (clinical and histopathologic features). Cytokine production in the supernatants of ex vivo colon cultures, and of LPS-stimulated macrophages incubated with Relm-α was assessed. Relm-α was administered intraperitoneally, and the cellular recruitment to the peritoneum was assessed. After innate intestinal stimulation with DSS, Relm-α was highly expressed by eosinophils and epithelial cells. Retnla gene–targeted mice were protected from DSS-induced colitis (eg, decreased diarrhea, rectal bleeding, colon shortening, disease score, and histopathologic changes). Relm-α coactivated IL-6 and TNF-α release and inhibited IL-10 release from LPS-activated bone marrow–derived macrophages. Consistent with these finding, colon cultures of DSS-treated Retnla−/− mice produced decreased IL-6 and increased IL-10 ex vivo. Furthermore, Retnla−/− mice had substantially decreased c-Jun N-terminal kinase phosphorylation in vivo. In vivo administration of Relm-α initiated cellular recruitment to the peritoneum, and Relm-α was able to induce eosinophil chemotaxis in vitro. These findings demonstrate a central proinflammatory role for Relm-α in colonic innate immune responses, identifying a novel pathway for regulation of macrophage activation.
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DOI:
10.1084/jem.155.5.1291
发表时间:
1982-05-01
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Nathan CF;Klebanoff SJ
通讯作者:
Klebanoff SJ
影响因子:
5.5
作者:
Forbes, Elizabeth;Hulett, Mark;Hogan, Simon P.
通讯作者:
Hogan, Simon P.
DOI:
10.1152/ajplung.00147.2007
发表时间:
2007-08-01
影响因子:
4.9
作者:
Mishra, Anil;Wang, Meiqin;Rothenberg, Marc E.
通讯作者:
Rothenberg, Marc E.
影响因子:
4.8
作者:
vanderVliet, A;Eiserich, JP;Cross, CE
通讯作者:
Cross, CE
影响因子:
14.2
作者:
Hogan, Simon P.;Seidu, Luqman;Rothenberg, Marc E.
通讯作者:
Rothenberg, Marc E.