双重向KDM1A和抗氧化剂是一种有效的抗癌策略
Shaila Mudambi1,2, Megan E Fitzgerald1,2, Deschana L Washington1
1Department of Cell Stress Biology, Roswell Park Cancer Institute, Elm and Carlton Streets, Buffalo, NY, United States 14263.
bioRxiv : the preprint server for biology
|June 25, 2024
概括
抑制氨酸特异性脱甲酶1 (KDM1A) 通过影响缺氧诱导因子1A (HIF-1A) 和谷氨水平,增加了癌细胞对氧化应激的敏感性. 这表明KDM1A抑制剂与抗氧化剂消耗疗法相结合,可以提供一种新的抗癌策略.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 在瘤学瘤学.
背景情况:
- 氨酸特异性去甲基酶1 (KDM1A/LSD1) 调节线粒体呼吸并稳定缺氧诱导因子1A (HIF-1A).
- HIF-1A通过葡萄糖代谢和抗氧化剂生产来影响活性氧物种 (ROS) 水平.
- 在细胞ROS反应中KDM1A的特定作用以前未被描述.
研究的目的:
- 研究KDM1A在调节细胞ROS反应中的作用.
- 评估KDM1A抑制剂与ROS诱导癌症疗法结合的疗效.
- 阐明KDM1A抑制影响ROS敏感性的机制.
主要方法:
- 使用KDM1A抑制剂和抗氧化剂治疗 (N-乙囊,布氨酸硫胺,奥拉诺芬) 在狂宫肌肉瘤细胞系 (Rh28,Rh30).
- 评估了细胞ROS水平,线粒体呼吸和HIF-1A诱导.
- 研究了HIF-1A过度表达和谷氨耗尽的影响.
主要成果:
- 抑制KDM1A使细胞对氧化应激敏感,从而增加了总细胞ROS.
- 在ROS暴露后,KDM1A抑制减少了基底线粒体呼吸和损害了HIF-1A诱导.
- 过度表达HIF-1A从KDM1A抑制诱导的ROS敏感性中拯救了细胞,这意味着HIF-1A和谷氨耗尽在观察到的效应中.
- KDM1A 抑制剂 bizine 与抗氧化剂消耗剂协同作用.
结论:
- 在氧化应激下,KDM1A在调节HIF-1A功能方面发挥着新的作用.
- 抑制KDM1A可以通过HIF-1A和谷氨酸耗尽来增强ROS敏感性.
- 双重向KDM1A和抗氧化剂系统是一个有前途的联合抗癌策略.
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