Expression regulation and function of NLRC5

Expression regulation and function of NLRC5
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NLRC5的表达调控和功能

DOI:
10.1007/s13238-012-2109-3
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发表时间:
2013-03
期刊:
Protein & Cell
影响因子:
--
通讯作者:
Qian, Youcun
Qian, Youcun
中科院分区:
其他
文献类型:
--
作者:
Yao, Yikun;Yao, Yikun;Qian, Youcun;Qian, Youcun

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NOD样受体(NLR)是一类对病原体攻击或细胞应激反应的细胞内受体,已受到越来越多的关注。NLRC 5是NLR蛋白家族中最大的成员,最近被鉴定为免疫应答的关键调节因子。虽然NLRC 5是组成型和广泛表达的,但它可以在病原体感染期间被干扰素显著诱导。体外和体内研究均表明NLRC 5是主要错配复合物(MHC)I类基因以及参与MHC I类抗原呈递的相关基因的特异性和主调节因子。MHC I类基因的表达受NLRC 5的调控,与RFX组分通过增强子依赖的方式协调。NLRC 5参与MHC I类分子介导的CD8+ T细胞活化、增殖和细胞毒作用,是宿主抵抗细胞内细菌感染的关键。然而,NLRC 5在先天免疫中的作用仍有待进一步研究。本文就NLRC 5的结构、表达调控及功能的研究进展作一综述。
The NOD like receptors (NLRs), a class of intracellular receptors that respond to pathogen attack or cellular stress, have gained increasing attention. NLRC5, the largest member of the NLR protein family, has recently been identified as a critical regulator of immune responses. While NLRC5 is constitutively and widely expressed, it can be dramatically induced by interferons during pathogen infections. Bothin vitroandin vivostudies have demonstrated that NLRC5 is a specific and master regulator of major mistocompatibility complex (MHC) class I genes as well as related genes involved in MHC class I antigen presentation. The expression of MHC class I genes is regulated by NLRC5 in coordination with the RFX components through an enhanceosome-dependent manner. And the involvement of NLRC5 in MHC class I mediated CD8+ T cell activation, proliferation and cytotoxicity is proved to be critical for host defense against intracellular bacterial infections. Nevertheless, the role of NLRC5 in innate immunity remains to be further explored. Here, we review the research advances on the structure, expression regulation and function of NLRC5.
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