Act1介导的IL-17信号通路与自身免疫性脑脊髓炎关系的研究进展
刘振山,季 哲,康自珍*
(上海交通大学医学院上海市免疫学研究所,上海 200025)

摘 要:摘 要:多发性硬化(multiple sclerosis, MS) 是以中枢神经系统(central nervous system, CNS) 慢性炎症性脱髓鞘为主要特征的自身免疫性疾病。实验性自身免疫性脑脊髓炎(experimental autoimmune encephalomyelitis,EAE) 在发病特点和病理学特征上与人类的MS 表现非常相似,是研究MS 发病机制及治疗的理想的动物模型。辅助性T 细胞17 (T helper cell 17, Th17) 细胞是CD4+ T 细胞的一个重要亚群,主要分泌IL-17(interleukin-17) 细胞因子,在EAE 的发病过程中具有重要作用。NF-κB 激活剂1 (NF-κB activator 1, Act1)是SEFIR (similar expression to fibroblast growth factor genes/IL-17R) 蛋白家族的一员,是IL-17 信号通路的连接蛋白。在IL-17 的刺激下,Act1 通过SEFIR-SEFIR 相互作用招募到IL-17 受体(IL-17 receptor, IL-17R) 上,以调节下游信号通路。对Act1 介导的IL-17 信号与自身免疫性疾病的关系做一综述,以期为EAE 的发病机制研究和治疗提供重要的理论基础和分子靶标。

The role of IL-17-Act1 signaling axis in the pathogenesis of EAE
LIU Zhen-Shan, JI Zhe, KANG Zi-Zhen*
(Shanghai Institute of Immunology, School of Medicine, Shanghai Jiaotong University, Shanghai 200025, China)

Abstract: Abstract: Multiple sclerosis (MS) is a complex immune-mediated disease of the central nervous system (CNS). Experimental autoimmune encephalomyelitis (EAE) is an animal model widely used for mechanistic and translational study of MS. T helper 17 (Th17), a distinct subset of CD4+ T cells with signature production of IL-17 (interleukin-17), plays a crucial role in the pathogenesis of EAE. NF-κB activator 1 (Act1), a member of the SEFIR protein family, is a key component in IL-17 signaling pathway. After IL-17 stimulation, Act1 is recruited to IL-17 receptor (IL-17R) through the SEFIR domain. Here, we review the molecular and cellular mechanisms by which IL-17-induced Act1-mediated signaling contribute to EAE.

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