A crucial role for HVEM and BTLA in preventing intestinal inflammation.

A crucial role for HVEM and BTLA in preventing intestinal inflammation.
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DOI:
10.1084/jem.20071160
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发表时间:
2008-06-09
期刊:
The Journal of experimental medicine
影响因子:
--
通讯作者:
Kronenberg M
Kronenberg M
中科院分区:
其他
文献类型:
--
作者:
Steinberg MW;Turovskaya O;Shaikh RB;Kim G;McCole DF;Pfeffer K;Murphy KM;Ware CF;Kronenberg M

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肿瘤坏死因子(TNF)家族成员LIGHT和TNF家族受体疱疹病毒进入介体(HVEM)之间的相互作用共同刺激T细胞并促进炎症。然而,HVEM也通过作为与B和T淋巴细胞衰减剂(BTLA)(免疫球蛋白超家族成员)结合的配体而触发抑制信号。HVEM在炎症过程中与这两种结合伴侣相互作用的贡献仍然未知。在这项研究中,我们研究了HVEM在由CD 4 + CD 45 RBhigh T细胞转移到重组激活基因(Rag)−/−小鼠诱导的结肠炎发展中的作用。尽管供体T细胞上HVEM的缺失导致发病率略有下降,但令人惊讶的是,Rag−/−受体中HVEM的缺失导致了相反的效果,肠道炎症的急剧加速。此外,HVEM在预防结肠炎加速中的关键作用主要涉及与BTLA相互作用的Rag−/−受体中放射抗性细胞的HVEM表达。我们的实验强调了HVEM的预防作用以及先天免疫细胞表达HVEM在预防肠道失控炎症中的重要性。
The interaction between the tumor necrosis factor (TNF) family member LIGHT and the TNF family receptor herpes virus entry mediator (HVEM) co-stimulates T cells and promotes inflammation. However, HVEM also triggers inhibitory signals by acting as a ligand that binds to B and T lymphocyte attenuator (BTLA), an immunoglobulin super family member. The contribution of HVEM interacting with these two binding partners in inflammatory processes remains unknown. In this study, we investigated the role of HVEM in the development of colitis induced by the transfer of CD4+CD45RBhigh T cells into recombination activating gene (Rag)−/− mice. Although the absence of HVEM on the donor T cells led to a slight decrease in pathogenesis, surprisingly, the absence of HVEM in the Rag−/− recipients led to the opposite effect, a dramatic acceleration of intestinal inflammation. Furthermore, the critical role of HVEM in preventing colitis acceleration mainly involved HVEM expression by radioresistant cells in the Rag−/− recipients interacting with BTLA. Our experiments emphasize the antiinflammatory role of HVEM and the importance of HVEM expression by innate immune cells in preventing runaway inflammation in the intestine.
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