通过抑制透性过渡孔,CKB促进了线粒体ATP的产生
Le He1, Jianghua Lin1, Shaojuan Lu1
1Tongji University Cancer Center, Shanghai Tenth People's Hospital of Tongji University, School of Medicine, Tongji University, Shanghai, 200092, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|June 19, 2024
概括
肌酸激酶B (CKB) 通过抑制AKT信号和线粒体来增强线粒体ATP的产生. 这条通路对细胞能量至关重要,在衰老和癌症中受到失调.
科学领域:
- 生物化学 生物化学
- 细胞生物学 细胞生物学
- 代谢过程中的代谢.
背景情况:
- 肌酸激酶 (CKs) 对于细胞能量平衡至关重要.
- 在线粒体ATP生产中CKs的具体作用在很大程度上是未知的.
- 线粒体ATP生产对于细胞生存至关重要,特别是在高能耗细胞中.
研究的目的:
- 为了研究肌体ATP生产中肌酸激酶的作用.
- 阐明CKs调节细胞能量平衡的分子机制.
- 探索CK在衰老和癌症中的潜在参与.
主要方法:
- 基因沉默肌酸激酶 (CKMT1A,CKMT1B,CKB) 的基因沉默.
- 评估细胞ATP产生的情况 (线粒体和糖分).
- 测量线粒体水平和AKT信号活动.
- 在体内瘤模型研究和老年人体细胞的分析.
主要成果:
- 在依赖于线粒体ATP合成酶的细胞中,CKB,CKMT1A和CKMT1B的高度表达.
- 沉默CKB,但不是CKMT1A或CKMT1B,赋予了对F1F0ATP合成酶抑制的抵抗力.
- CKB抑制线粒体,抑制AKT,并促进线粒体ATP生成,同时减少糖性ATP.
- CKB-AKT轴增强癌细胞中的线粒体ATP生产,并且在衰老中发生变化.
结论:
- 在调节线粒体ATP生产方面,CKB发挥着直接和关键的作用.
- CKB-AKT信号通路是细胞能量代谢的新型调节器.
- 对CKB和AKT信号的调节失调可能会导致衰老和癌症病理生理学.
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