微质NLRC5驱动 lysosomal 功能障碍以破坏自流并促进中风后的神经炎症
Siyi Xu1,2, Pinyi Liu1,3,4,5, Junqiu Jia1
1Department of Neurology, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu, 210008, China.
Journal of neuroinflammation
|November 1, 2025
概括
含有NOD类受体家族酶招募域的蛋白质5 (NLRC5) 通过损害 lysosomal 功能和促进神经炎症而加剧缺血性中风损伤. 针对NLRC5-ISG15途径为中风治疗提供了一个潜在的治疗策略.
科学领域:
- 神经科学是一个神经科学.
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
背景情况:
- 缺血性中风会导致过度的微质激活和神经炎症,导致二次神经元损伤.
- 自-溶解体系统的功能障碍与持续的微质炎症反应有关.
- 在中风后的神经炎症中,NOD类受体家族酶招募域含蛋白5 (NLRC5) 的特定作用尚不清楚.
研究的目的:
- 研究NLRC5在调节缺血性中风后的神经炎症和脑损伤中的作用.
- 阐明NLRC5影响微质功能和神经元存活的潜在分子机制.
- 评估针对缺血性中风中的NLRC5途径的治疗潜力.
主要方法:
- 在老鼠模型中检查了NLRC5表达的暂时中脑动脉封闭 (tMCAO) 和人体死后脑组织.
- 产生微质特异性NLRC5淘汰 (mCKO) 的小鼠,以评估NLRC5删除对中风结果的影响.
- 利用蛋白质组学,质谱学和分子生物学分析来确定作用机制.
主要成果:
- 在中风模型和患者中,NLRC5表达在缺血半中升级,并激活了微质.
- mCKO小鼠显示神经功能得到改善,心脏病发作量减少,中风后神经元亡减少.
- NLRC5通过损害 lysosomal 功能来破坏自流,稳定了 ISG15,并促进了促炎性细胞因子的释放,如果没有 ISG15,效应会被废除.
结论:
- NLRC5促进微质炎症,并通过稳定ISG15,破坏溶酶体功能和自流,加剧缺血性中风损伤.
- NLRC5-ISG15轴代表了在缺血性中风中免疫调节的有前途的治疗标.
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