通过调节铁和亡来减轻乙醇诱导的肝细胞损伤
Feng Chen1, Qianhui Li1, Xiaomin Xu1
1Division of Gastroenterology, Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen, China.
概括
保护肝细胞免受酒精损伤,通过调节特定细胞死亡途径铁灭亡. 这项研究表明,补充剂可以通过减少氧化应激和细胞死亡标志物来改善酒精性肝病.
科学领域:
- 细胞生物学 细胞生物学
- 生物化学 生物化学
- 毒理学 毒理学 毒理学
背景情况:
- 铁亡是一种新型的受调细胞死亡形式,与各种疾病有关.
- 对通过铁死引起的乙醇诱导的肝细胞损伤的保护作用尚不清楚.
研究的目的:
- 为了研究对乙醇诱导的肝细胞损伤的影响.
- 阐明铁灭菌途径在酒精性肝病 (ALD) 和干预中的作用.
主要方法:
- 建立了体外 (NCTC克隆1469细胞) 和体内 (老鼠ALD模型) 系统.
- 评估了细胞活力,脂质过氧化,细胞亡和铁亡标志物 (GPX4,SLC7A11,ACSL4).
- 使用血清肝功能测试,组织染色和免疫组织化学用于体内分析.
主要成果:
- (甲,乙) 预处理改善了肝细胞活力,GSH和SOD活性,同时降低了MDA和铁含量.
- 在暴露于乙醇的肝细胞中,调节的亡和铁亡标志物 (GPX4,SLC7A11,ACSL4).
- 在体内,和ferrostatin-1减轻了肝损伤,降低了ALT/AST水平,并在ALD小鼠中改变了ferroptosis蛋白表达.
结论:
- 乙醇诱导的肝细胞损伤是由铁亡途径调节的.
- 通过对抗氧化应激和调节亡和铁亡,显示出对酒精性肝损伤的保护作用.
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