过氧化素II沉默加剧FA诱导的骨髓毒性,通过触发由PTEN介导的PI3K通路而加剧
Guangyan Yu1, Xiangfu Song1, Ran An1
1Department of Preventive Medicine, School of Public Health, Jilin University, Changchun, P.R.China.
Toxicology and industrial health
|December 13, 2025
概括
甲暴露会在骨髓细胞中引起氧化应激. 通过激活PI3K/Akt通路,PrxII基因沉默会加剧这种损伤,这表明PrxII是甲诱导白血病发生的关键调节者.
科学领域:
- 毒理学 毒理学 毒理学
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
背景情况:
- 甲 (FA) 通过氧化应激与白血病有关.
- PrxII,PTEN,PI3K和Akt的异常表达发生在FA暴露的骨髓细胞中.
- 假设在FA引起的损伤中,PrxII和PI3K通路之间存在潜在的功能联系.
研究的目的:
- 研究PI3K途径与FA诱导的氧化损伤中的PrxII之间的相互作用.
- 阐明PrxII在调节PI3K/Akt信号级联中的作用.
- 评估PI3K抑制和PrxII沉默对BMC的影响.
主要方法:
- 定量实时PCR (qRT-PCR) 和西部斑点分析用于基因和蛋白质表达.
- 细胞计数工具-8 (CCK-8) 测试细胞活力.
- 使用DCFH-DA.检测活性氧物种 (ROS).
- 通过Annexin V/PI染色进行亡分析.
- 通过siRNA介导的PrxII基因沉默.
主要成果:
- 用LY294002抑制PI3K通路减少了FA诱导的氧化损伤,改善了BMC活力,降低了ROS和亡.
- PrxII基因沉默导致PTEN下调和PI3K/Akt信号通路的激活.
- 这些发现表明,PrxII沉默会通过PTEN激活PI3K通路,加剧FA引起的氧化损伤.
结论:
- PI3K通路在BMC中起着保护性作用,防止甲诱导的氧化应激.
- PrxII基因沉默激活PI3K/Akt通路,可能由PTEN调解,恶化FA诱导的氧化损伤.
- 在甲诱导的白血病发生和氧化损伤的背景下,PrxII成为关键调节者.
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