特里普托利德通过通过Nrf2降解促进铁化,诱导肝毒性
Lin Guo1, Yan Yang1,2, Jiating Ma1
1Department of Pharmacy, the Second Xiangya Hospital, Central South University, Changsha, 410011, China.
托利德 (TP) 通过抑制Nrf2通路而导致肝损伤,从而导致铁亡. 恢复Nrf2水平可以防止TP诱导的肝毒性和铁.
科学领域:
- 肝病学 肝病学是一种肝病学.
- 毒理学 毒理学 毒理学
- 细胞生物学 细胞生物学
背景情况:
- 三化物 (TP) 是Tripterygium wilfordii中的一个关键化合物,具有多种药理学活性.
- 肝毒性是限制TP临床使用的一个主要问题.
研究的目的:
- 为了研究铁死在三胺诱导的肝损伤中的作用.
- 阐明潜在的分子机制,重点关注Nrf2通路.
主要方法:
- 在体外和体外模型被用于评估肝细胞损伤和铁亡标志物.
- 用铁素-1 (抑制剂) 和GPX4 (过度表达) 来证实铁亡的参与.
- 使用Nrf2淘汰和过度表达系统来研究它的作用.
- 进行了脂管学和分子分析 (CETSA,IP) 来分析脂质代谢和TP-Nrf2相互作用.
主要成果:
- 在肝细胞中,ptolide 诱导了铁,以铁的积累和脂质过氧化为证.
- 发酵酶被确定为TP诱导的肝损伤的关键媒介.
- 特里普托利德抑制了Nrf2信号通路,加剧了肝损伤和铁亡.
- TP直接与Nrf2结合,通过无素-蛋白酶体通路促进其降解.
结论:
- 由Triptolide抑制Nrf2促进铁亡和随后的肝损伤.
- 准Nrf2通路可能提供一种治疗策略,可以预防Triptolide的肝毒性.
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