通过调节NRF2介导的FSP1表达,破坏线粒体动力学减弱铁和化学毒性
Shuang Ma1, Jianhua Qin1, Yao Zhang1
1The HIT Center for Life Sciences, School of Life Science and Technology, Harbin Institute of Technology, Harbin 150080, China.
Cell reports
|September 4, 2025
概括
线粒体动力学,特别是裂变,在铁灭过程中被诱导. 通过向关键蛋白质来干扰这一过程, 抑制铁亡并提供一种潜在的策略来对抗化疗毒性.
科学领域:
- 细胞生物学
- 生物化学
- 病理学
背景情况:
- 铁死是一种受控的细胞死亡形式,由依赖铁的脂质过氧化驱动.
- 线粒体对于铁绝育至关重要,它们的动态对于细胞健康至关重要.
- 线粒体动力学在调节铁亡中的确切作用尚不清楚.
研究的目的:
- 研究线粒体动力学在铁死中的作用.
- 阐明线粒体动力学影响铁亡的分子机制.
- 在化疗中探索调节线粒体动态的治疗潜力.
主要方法:
- 研究抑制关键线粒体动态蛋白 (DRP1,Mitofusins,OPA1) 对铁亡的作用.
- 分析线粒体动力学缺陷对细胞能量状态 (ATP/ADP比率) 和信号通路 (AMPK,NRF2) 的影响.
- 评估与铁死相关的基因表达 (FSP1) 和线粒体融合促进剂 (M1) 对多克索鲁比诱导的化学毒性的疗效.
主要成果:
- 在铁灭过程中诱导了线粒体分裂.
- 通过改变DRP1,Mitofusins或OPA1的表达来破坏线粒体动力学可以抑制铁死.
- 损坏的线粒体动力学激活AMPK,导致NRF2酸化和核转移,从而调节FSP1并赋予耐铁.
- 线粒体融合促进剂M1降低了多克索鲁的化学毒性,但没有影响其抗癌作用.
结论:
- 线粒体动力学在调节铁中起着至关重要的作用.
- 调节线粒体动力学是一种潜在的治疗方法来缓解化疗引起的毒性.
- 针对线粒体动态为癌症治疗和支持性护理提供了一种新的策略.
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