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在类风湿性关节炎中,MIF通过ATF6信号通路促进Th17细胞分化
Guozhi Yan1, Rongrong Song2, Jieyu Zhang2
1Department of Laboratory Medicine, The Sixth Affiliated Hospital, School of Medicine, South China University of Technology, Foshan, Guangdong, 528200, China.
Molecular medicine (Cambridge, Mass.)
|November 29, 2024
概括
巨细胞迁移抑制因子 (MIF) 和内网膜 (ER) 压力通过激活ATF6通路促进类风湿性关节炎 (RA),增强Th17细胞分化. 这一发现为RA治疗提供了一个新的治疗点.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 类风湿病学 类风湿病学
背景情况:
- 类风湿性关节炎 (RA) 是一种常见的自身免疫性疾病,会导致关节损伤,但其确切的发病原因尚不清楚.
- 了解驱动RA的分子机制对于开发有效的治疗方法至关重要.
研究的目的:
- 为了研究巨细胞迁移抑制因子 (MIF),内质网膜 (ER) 应激和Th17细胞在RA病变发生中的作用.
- 在RA的背景下阐明MIF,ER压力和Th17细胞分化之间的分子相互作用.
主要方法:
- 在活跃的RA患者中分析MIF表达和Th17细胞比例.
- 在体外刺激和共同免疫沉以确认MIF-ATF6相互作用.
- 染色体免疫沉试验评估ATF6与Th17分化基因促进体结合.
- 使用Ceapin-A7抑制ATF6通路,以评估其对Th17分化的影响.
主要成果:
- 在活跃的RA患者中观察到CD4+T细胞MIF表达升高和Th17细胞比例增加.
- 细胞内膜网膜应激被激活,启动ATF6途径在未折叠蛋白反应 (UPR) 中.
- 证实MIF与ATF6相互作用,增强ATF6通路信号传递,并通过STAT3和RORC促进Th17细胞分化.
结论:
- MIF增强ATF6通路的信号传递,从而促进Th17细胞的分化,这代表了RA发病的潜在机制.
- 已确定的MIF-ATF6-Th17轴为治疗类风湿性关节炎提供了一个新的治疗点.
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