RING1决定了GSDMD介导的炎症反应和宿主对病原体感染的易感性
Yuanyuan Li1, Wenqing Gao1,2, Yuxin Qiu1
1State Key Laboratory of Genetics and Development of Complex Phenotypes, Department of Neurology, Huashan Hospital and School of Life Sciences, Fudan University, Shanghai, China.
Cell death and differentiation
|May 14, 2025
概括
RING1通过Gasdermin D (GSDMD) 的无处不在,对宿主防御对细菌感染和败血症产生负面调节. 失去RING1会增加对病原体和炎症的易感性.
科学领域:
- 分子生物学分子生物学
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
背景情况:
- 聚合体抑制复合体1 (PRC1) 中的一种E3酶RING1调节染色体和细胞过程.
- 对于RING1在炎症和细胞灭亡 (一种被编程的细胞死亡途径) 中的作用尚不清楚.
研究的目的:
- 研究RING1在调节热和对抗细菌感染的宿主防御中的作用.
- 阐明RING1影响Gasdermin D (GSDMD) 活性的分子机制.
主要方法:
- 在体内研究使用细菌感染 (S. typhimurium,M. tuberculosis) 和败血症 (LPS诱导) 的小鼠模型.
- 生物化学试验以确定RING1-GSDMD相互作用和无处不在的部位 (K51,K168).
- 在Ring1淘汰赛模型中分析GSDMD水平,热和免疫反应.
主要成果:
- RING1促进了GSDMD的K48连接的泛化,将其向蛋白质体降解并抑制热灭.
- 失去RING1会增加对S. typhimurium感染的易感性,并加剧LPS诱导的败血症.
- 虽然最初可以减少M.结核病的负载,但RING1的删除会导致肺炎的增加和免疫力受损.
结论:
- RING1 作为 GSDMD 介导的热和炎症反应的关键负调节剂.
- RING1影响宿主对细菌病原体和败血症的易感性.
- RING1代表了传染病的潜在治疗点.
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