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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Identification of an IL-27/osteopontin axis in dendritic cells and its modulation by IFN-γ limits IL-17-mediated autoimmune inflammation
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Identification of an IL-27/osteopontin axis in dendritic cells and its modulation by IFN-γ limits IL-17-mediated autoimmune inflammation

机译:树突状细胞中IL-27 /骨桥蛋白轴的鉴定及其对IFN-γ的调节限制了IL-17介导的自身免疫炎症

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摘要

Dendritic cells (DCs) play a central role in determining the induction of T cell responses. IL-27 production by DCs favors induction of IL-10-producing regulatory T cells, whereas osteopontin (OPN) promotes pathogenic IL-17 T cell responses. The regulatory mechanisms in DCs that control these two cells types are not understood well. Here, we show that IFN-γ induces IL-27 while inhibiting OPN expression in DCs both in vitro and in vivo and that engagement of IFN-γR expressed by DCs leads to suppression of IL-17 production while inducing IL-10 from T cells. DCs modified by IFN-γ acquire IL-27-dependent regulatory function, promote IL-10-mediated T cell tolerance, and suppress autoimmune inflammation. Thus, our results identify a previously unknown pathway by which IFN-γ limits IL-17-mediated autoimmune inflammation through differential regulation of OPN and IL-27 expression in DCs.
机译:树突状细胞(DC)在确定T细胞反应的诱导中起着核心作用。 DC产生IL-27有助于诱导产生IL-10的调节性T细胞,而骨桥蛋白(OPN)促进致病性IL-17 T细胞的应答。 DC中控制这两种细胞类型的调节机制尚不清楚。在这里,我们显示IFN-γ诱导IL-27,同时在体外和体内抑制DC中的OPN表达,而DC表达的IFN-γR的参与导致IL-17产生的抑制,同时诱导T细胞中的IL-10。 。被IFN-γ修饰的DC获得IL-27依赖性调节功能,促进IL-10-介导的T细胞耐受性,并抑制自身免疫炎症。因此,我们的结果确定了以前未知的途径,IFN-γ通过差异调节DC中的OPN和IL-27表达来限制IL-17介导的自身免疫炎症。

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    Center for Neurologic Diseases, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115;

    rnCenter for Neurologic Diseases, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115;

    rnCenter for Neurologic Diseases, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115;

  • 收录信息 美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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  • 正文语种 eng
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