硫福拉治疗模仿了肌肉髓管中收缩活动诱导的线粒体适应
Sabrina Champsi1, David A Hood1
1Muscle Health Research Centre, School of Kinesiology and Health Science, York University, Toronto, Ontario, Canada.
American journal of physiology. Cell physiology
|December 13, 2024
概括
硫福拉 (SFN) 激活Nrf-2通路,模仿炼诱导的骨肌肉中的线粒体适应. 这种天然化合物增强了线粒体呼吸,生物发生和抗氧化能力,为肌肉健康提供了潜在的治疗策略.
科学领域:
- 线粒体生物学和骨肌肉生理学.
- 营养生物化学和分子信号通路.
背景情况:
- 线粒体对骨肌肉健康至关重要,运动通过质量控制来增强其功能.
- 模仿运动诱导的线粒体适应的制药干预措施是有限的.
- 硫福拉 (SFN) 是一种十字花植物化合物,可激活Nrf-2抗氧化途径,但其对肌肉的影响尚未得到充分研究.
研究的目的:
- 调查SFN对骨肌肉线粒体的影响,特别是与慢性收缩活性 (CCA) 相结合.
- 为了确定SFN是否可以模拟运动诱导的线粒体适应.
- 探索Nrf-2通路在SFN介导对肌肉线粒体的影响中的作用.
主要方法:
- 使用C2C12神经管通过电刺激来建模慢性收缩活动 (CCA).
- 用SFN处理肌管,有或没有CCA,以评估其对线粒体功能和信号传递的影响.
- 测量了线粒体呼吸,生物发生,抗氧化能力和Nrf-2通路激活的关键标志物.
主要成果:
- SFN促进了Nrf-2核转位和高调的抗氧化蛋白 (catalase,谷氨缩小酶),减少活性氧物种 (ROS).
- SFN增强了线粒体呼吸,生物发生 (增加TFAM,PGC-1α),线粒体含量和器官分支.
- SFN诱导的适应性与CCA所观察到的适应性相似,这表明SFN模仿运动效应.
结论:
- SFN激活了类似于由骨肌肉收缩活动诱导的信号级联.
- SFN治疗增强了骨肌细胞中的线粒体呼吸,生物发生和抗氧化剂防御.
- SFN是改善骨肌肉中的线粒体健康和功能的有希望的治疗候选者.
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