F-ATP合成酶抑制因子1调节代谢重编程,涉及其与c-Myc和PGC1αα的相互作用
Lishu Guo1,2, Zhenglong Gu1
1Center for Mitochondrial Genetics and Health, Greater Bay Area Institute of Precision Medicine (Guangzhou), Fudan University, Guangzhou, China.
Frontiers in oncology
|July 20, 2023
概括
该研究显示,IF1与c-Myc和PGC1α相互作用,影响糖解,氧化呼吸和细胞命运. 这种相互作用对于代谢重编程和在压力下细胞生存至关重要.
科学领域:
- 线粒体生物学 线粒体生物学
- 细胞代谢的细胞代谢.
- 分子机制的分子机制
背景情况:
- F-ATP合成酶抑制因子1 (IF1) 是F-ATP合成酶的一种内源性抑制剂.
- IF1因其在代谢表型和细胞命运中介导的作用而得到认可.
- 基础IF1的生理功能精确的分子机制仍然不完全阐明.
研究的目的:
- 研究IF1调节细胞代谢和命运的分子机制.
- 确定涉及IF1在代谢重编程中的关键蛋白质-蛋白质相互作用.
- 探索IF1在细胞对线粒体压力和缺氧的反应中的作用.
主要方法:
- 同免疫沉测试以确定蛋白质相互作用.
- 西方涂抹测试用于评估蛋白质酸化和表达.
- 在压力条件下的线粒体局部化研究.
- 细胞活力测试用于评估缺氧的保护作用.
主要成果:
- 发现IF1与Thr-58酸化c-Myc相互作用,可能调节c-Myc活性并促进糖解.
- IF1和PGC1α之间的相互作用被证明可以抑制氧化呼吸.
- 在线粒体应激期间,IF1调解了c-Myc和PGC1α的线粒体定位.
- IF1对于低氧对由c-Myc和PGC1α诱导的细胞死亡的保护作用至关重要.
结论:
- IF1与转录因子c-Myc和PGC1α的相互作用与IF1调节的代谢重编程有关.
- 这些相互作用在代谢压力条件下在确定细胞命运方面发挥着重要作用.
- IF1作为关键调节器,将线粒体功能,代谢途径和细胞存活联系起来.
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