附件A1保护表皮干细胞免受紫外B辐射诱导的线粒体功能障碍
Lingzhi Ge1, Wenfang Chen1, Fangli Wei2
1Department of Dermatology and Venereology, The Second Affiliated Hospital of Shandong First Medical University, No. 366 Mount Tai Street, Taian, 271000, Shandong Province, China.
Archives of dermatological research
|June 14, 2024
概括
附录素A1 (ANXA1) 通过促进线粒细胞吸收,保护表皮干细胞免受UV-B损伤. 这一过程涉及激活RhoA/ROCK1通路,改善线粒体功能,减少UV-B辐射引起的细胞损伤.
科学领域:
- 细胞生物学 细胞生物学
- 皮肤病学 皮肤病学
- 分子生物学分子生物学
背景情况:
- 紫外线B (UV-B) 辐射暴露会损害表皮干细胞 (ESC) 的功能.
- 线粒体功能障碍是UV-B诱导的细胞损伤的一个关键因素.
研究的目的:
- 为了研究Annexin A1 (ANXA1) 减轻ESCsUV-B诱导的线粒体功能障碍和细胞损伤的机制.
- 确定线粒和RhoA/ROCK1通路在ANXA1的保护作用中的作用.
主要方法:
- 这些ESC被暴露在不同剂量的UV-B辐射中.
- 使用ANXA1过度表达,然后用UV-B,CCCP,CCG-1423,或3-甲基亚丁胺进行治疗.
- 评估了细胞活力,死亡,ATP和活性氧物种 (ROS) 水平,线粒体膜潜力 (MMP),线粒体DNA (mtDNA) 含量,氧耗,RhoA激活和与线粒体和炎症相关的蛋白质水平.
主要成果:
- 紫外线暴露降低了ESC活力和ANXA1表达,同时增加了细胞死亡,ROS和炎症标志物.
- 紫外线B诱导的线粒体功能障碍,由减少的ATP,MMP,mtDNA含量和受损的线粒体形态学证明.
- 过度表达ANXA1通过通过RhoA/ROCK1通路促进线粒细胞消化,恢复线粒体功能和减少炎症来抵消UV-B的影响.
结论:
- 紫外线 (UV-B) 辐射通过抑制线粒细胞衰变并导致线粒体功能障碍而损害ESC.
- ANXA1通过RhoA/ROCK1通路激活线粒细胞吸收,从而防止UV-B诱导的损伤.
- 准ANXA1和线粒细胞衰变是一种潜在的治疗策略,可以减轻UV-B诱导的皮肤损伤.
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