基于瘤细胞中的ATM/ATR/p53通路,确定与炎症反应相关的分子机制
Chengye Li1, Hanbin Chen2, Xiaojian Chen3
1Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang, People's Republic of China.
Computers in biology and medicine
|August 1, 2024
概括
炎症通过放大活性氧物种 (ROS) 和激活ATM/ATR/p53通路,增加了癌细胞对DNA损伤的敏感性. 这种机制提高了诸如过氧化和紫外线辐射等治疗的有效性.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 遗传学 遗传学 是一个
背景情况:
- 炎症反应显著影响癌症预后和治疗疗效.
- 虽然已知炎症会增加DNA的脆弱性,但确切的机制尚未完全理解.
- 反应性氧物种 (ROS) 是常见的诱导癌细胞DNA损伤的代理物.
研究的目的:
- 阐明炎症使癌细胞对ROS诱导的DNA损伤敏感的潜在机制.
- 研究特定炎症途径在DNA损伤和修复中的作用.
- 探索炎症如何影响常见的DNA损伤剂的疗效.
主要方法:
- 癌细胞暴露于炎症刺激 (TNF-α,LPS) 和ROS诱导剂 (H2O2,UV).
- 来自TCGA的基因表达数据被分析以确定与炎症相关的和预后基因.
- 对预后基因进行了KEGG通路分析,以了解相关的生物过程.
- 在炎症和DNA损伤的背景下评估了ATM/ATR/p53通路的激活.
主要成果:
- 炎症显著增强了H2O2和紫外线治疗的抗增殖和亡作用.
- 炎症放大了ROS的产生和由H2O2和UV引起的DNA损伤.
- 发现ATM/ATR/p53通路被炎症激活,从而增加了DNA的脆弱性.
- 炎症似乎没有影响DNA损伤修复途径.
结论:
- 炎症通过激活ATM/ATR/p53通路,加剧了癌细胞中ROS诱导的DNA损伤.
- 由于炎症导致的这种增加的DNA脆弱性可以提高某些癌症疗法的疗效.
- 了解炎症,ROS和DNA损伤之间的相互作用对于开发新的癌症治疗策略至关重要.
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