p66Shc信号传递和自对老化过程中的C2C12髓细胞分化产生影响
Yaiza Potes1,2,3, Juan C Bermejo-Millo4,5,6, Catarina Mendes7,8
1Department of Morphology and Cell Biology, Faculty of Medicine, University of Oviedo, Oviedo, Spain. potesyaiza@uniovi.es.
Cell death & disease
|March 8, 2024
概括
在衰老过程中,p66Shc信号通路和自对于肌肉细胞 (髓细胞) 的分化和再生至关重要. 损坏的p66Shc或自会降低肌原性能力,影响肌肉健康.
科学领域:
- 细胞生物学 细胞生物学
- 衰老研究研究 衰老研究
- 肌肉生理学 肌肉生理学
背景情况:
- 肌肉再生因卫星细胞衰老而随着年龄的增长而下降.
- 肌体衰老和分化背后的机制尚不清楚.
研究的目的:
- 研究p66Shc信号传递和自在C2C12髓细胞分化和衰老中的作用.
- 阐明这些途径对细胞代谢和肌肉发育过程中的氧化应激的影响.
主要方法:
- 早期传递 (年轻) 和晚期传递 (衰老) 的C2C12细胞核细胞的比较.
- 分析p66Shc信号传递,自标志物 (例如SQSTM1/p62,Atg7) 和代谢概况 (OXPHOS,糖解).
- 在基因操纵 (如Atg7沉默) 后评估肌原性能力,增殖和分化.
主要成果:
- 年轻的神经细胞表现出活跃的p66Shc,抗氧化防御和OXPHOS主导的新陈代谢.
- 衰老的神经细胞表现出改变的新陈代谢 (OXPHOS和糖解) 和受损的p66Shc信号传递和自.
- 缺乏p66Shc会阻碍肌细胞的增殖和分化; Atg7沉默会影响肌管活力.
结论:
- p66Shc通路对于肌体承诺,分化和细胞代谢调节至关重要.
- 自对于肌细胞分化过程中的代谢开关至关重要,影响细胞命运.
- p66Shc和自是与年龄相关的虚弱和残疾的潜在生物标志物.
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