线粒细胞分裂,线粒细胞分裂和亡协调驱动线粒体清除,以调节肌源性差异化
Dandan Wang1, Mei Li1, Jun Ma1
1Science Center for Future Foods, Jiangnan University, Wuxi 214122, China; School of Biotechnology and Key Laboratory of Industrial Biotechnology of Ministry of Education, Jiangnan University, Wuxi 214122, China.
Journal of advanced research
|January 28, 2026
概括
线粒体损伤触发了连续的清除:线粒细胞分裂,然后是线粒细胞分裂,然后是亡. 这种协调对于肌肉发育至关重要,受损的途径阻碍了肌肉发育和再生.
科学领域:
- 细胞生物学 细胞生物学
- 肌肉生理学 肌肉生理学
- 线粒体动力学的动力学
背景情况:
- 骨肌肉需要线粒体平衡来进行发育和功能.
- 线粒体质量控制涉及线粒细胞分裂,线粒细胞分裂和亡.
- 这些清除途径在肌形成过程中的协调还不清楚.
研究的目的:
- 研究 mitocytosis,mitophagy 和 apoptosis 的顺序激活和协调.
- 确定这些途径对肌细胞分化和肌细胞生成的影响.
主要方法:
- 使用CCCP在肌细胞中建立了渐变线粒体损伤模型.
- 使用光成像,西式涂抹,基因干预和小分子抑制剂.
- 分析了激活序列,交叉声,以及对肌管形成和功能的影响.
主要成果:
- 序列激活:KIF5B介导的线粒细胞分裂 -> PINK1依赖的线粒细胞分裂 -> 卡斯帕酶3介导的亡.
- 损坏的线粒细胞形成导致了线粒细胞衰变的主导作用;增强的线粒细胞形成抑制了其他途径.
- 线粒细胞衰变导致补偿性线粒细胞衰变 (轻度损伤) 或亡 (严重损伤).
- 线粒细胞和线粒细胞衰竭都显著抑制了肌细胞生成.
- 低剂量的CCCP促进了肌肉发育和线粒体功能,并从KIF5B/PINK1缺乏中拯救了缺陷.
- 过度表达KIF5B增强了糖解和肌细胞增殖.
结论:
- 对线粒体清除机制协调调节网络的新见解.
- 这些发现有助于我们更好地理解肌肉生物学.
- 在生物医学和细胞农业中增强肌肉再生的潜在策略.
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