EIF2α-PERK信号通路通过内质网膜应激介导暴露诱导的A1型天体细胞激活,通过内质网膜应激激活
Jing Wang1, Tingting Guo1, Yang Hu1
1Department of Occupational & Environmental Health, The Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi'an 710032, China.
Toxics
|November 27, 2025
概括
(Mn) 暴露会通过激活星球细胞和ER应激引起神经毒性. 抑制PERK通路可以减少这种损伤,减轻运动缺陷,并为毒性提供潜在的治疗策略.
科学领域:
- 神经科学是一个神经科学.
- 毒理学 毒理学 毒理学
- 细胞生物学 细胞生物学
背景情况:
- (Mn) 暴露与神经系统疾病有关,特别是运动功能障碍.
- 由激活的星球细胞驱动的神经炎症是神经退行性疾病的关键.
- 天体细胞表型 (A1和A2) 在神经炎症中起着不同的作用.
研究的目的:
- 阐明Mn诱导的神经毒性的分子机制.
- 调查内细胞网膜 (ER) 应激和天体细胞激活在Mn毒性中的作用.
- 评估针对EIF2α-PERK通路的治疗潜力.
主要方法:
- 建立了暴露的体内和体外模型.
- 分析了天体细胞激活 (A1表型) 和ER压力.
- 研究了EIF2α-PERK信号通路和线粒体功能.
- 使用PERK抑制剂 (ISRIB,GSK2606414) 来评估治疗效果.
主要成果:
- 在这两种模型中,Mn暴露诱导了A1星细胞激活和ER压力.
- 激活了EIF2α-PERK通路,导致ER压力和线粒体损伤.
- 抑制星性PERK缓解了Mn诱导的ER压力和A1激活.
- 抑制PERK可以缓解Mn引起的运动缺陷.
结论:
- Mn诱导的神经毒性涉及ER压力和通过PERK通路激活A1天体细胞.
- 抑制PERK通过抑制天体细胞激活和保持有机细胞平衡来改善Mn神经毒性.
- 准PERK通路为毒性提供了潜在的治疗策略.
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