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有氧运动通过氧化酸化途径改善了性淘汰赛斑马鱼的骨肌肉缩

Zheng Peng¹, Tianle Yang¹, Siting Xu²

¹Hunan Key Laboratory of Physical Fitness and Sports Rehabilitation, Hunan Normal University, Changsha, 410012, Hunan, China.

Free radical biology & medicine

|July 7, 2025

概括

通过损害线粒体氧化酸化 (OXPHOS),ATIC缺乏会破坏骨肌肉. 运动训练可以通过增强线粒体生物发生和减少氧化应激来恢复肌肉功能.

科学领域:

生物化学生物化学
细胞生物学细胞生物学
遗传学是一个遗传学.

背景情况:

精氨酸代谢障碍与骨肌肉病理之间的联系尚不清楚.
ATIC是新生合成中的一个关键酶.

研究的目的:

阐明ATIC缺乏导致骨肌肉缩的机制.
研究运动在缓解ATIC缺乏引起的肌肉病理方面的治疗潜力.

主要方法:

通过CRISPR/Cas9介导的斑马鱼的淘汰模式.
通过siRNA干扰的C2C12核细胞细胞模型.
在斑马鱼模型中进行渐进性有氧运动干预.

主要成果:

除ATIC会损害线粒体的氧化酸化 (OXPHOS) 并增加活性氧物种 (ROS),从而通过ubiquitin-proteasome系统导致肌肉缩.
观察到异常的5-aminoimidazole-4-carboxamide ribonucleotide (AICAR) 积累和阻断的氨酸单酸盐 (IMP) 合成.
八周的有氧训练通过增强线粒体生物生成,上调OXPHOS复合体表达和改善ROS清理,恢复了骨肌肉功能.

结论:

通过 purin代谢失调,ATIC 缺乏会破坏线粒体功能,将 AICAR 积累与 OXPHOS 损伤联系起来.
这为早期检测氨酸向药物的肌肉毒性提供了基础.
这些发现支持对代谢性肌肉病变的运动康复策略.

关键词:

这就是ATIC ATIC.有氧运动是有氧运动.这就是CRISPR-Cas9的特征.肌肉肌肉肌肉肌肉氧化酸化路径的氧化酸化路径

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