通过诱导异常的线粒体展开蛋白质反应向癌症线粒体,导致瘤抑制
Baoxiao Wang1, Wenjun Chen1, Qiqi Huang1
1Department of Otolaryngology, Head and Neck Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China.
线粒体未折叠蛋白反应 (UPRmt) 保护癌细胞免受西斯. 激活UPRmt可以提高细胞存活率并减少化疗引起的损伤,这表明UPRmt是治疗点.
科学领域:
- 细胞生物学 细胞生物学
- 生物化学 生物化学
- 在瘤学瘤学.
背景情况:
- 线粒体平衡对于细胞在压力下生存至关重要.
- 线粒体展开蛋白反应 (UPRmt) 是调节线粒体功能的一个关键途径.
- 鼻癌 (NPC) 细胞在西斯普拉丁化疗期间面临压力.
研究的目的:
- 调查UPRmt在NPC细胞对西斯的反应中的作用.
- 为了确定UPRmt调制是否影响西斯普拉丁诱导的细胞毒性和亡.
- 探索UPRmt作为NPC治疗中的潜在治疗标.
主要方法:
- 使用AEB5F抑制UPRmt,并使用小菌素激活.
- 通过乳酸脱酶 (LDH) 释放的细胞活性的评估.
- 使用TUNEL试验量化亡.
- 通过免疫光学测量线粒体膜潜力,ATP生产,活性氧物种 (ROS) 和caspase-9激活.
主要成果:
- 抑制UPRmt增加了思普拉丁细胞毒性,LDH释放和亡.
- 激活UPRmt减少了西斯胺诱导的细胞死亡和亡标志物.
- UPRmt激活保留了线粒体膜潜力和ATP水平,降低了ROS,并抑制了caspase-9激活.
- 在NPC细胞中,UPRmt作为细胞保护机制,对抗NPC细胞中的思丁.
结论:
- 在西斯普拉丁压力下,UPRmt在鼻癌细胞中起着显著的细胞保护作用.
- 调节UPRmt可以减轻西斯普拉丁诱导的线粒体功能障碍和亡.
- 准UPRmt通路具有治疗潜力,可以提高西斯普拉丁化疗的疗效和减少副作用.
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