乙酸可改善肝细胞铁和肝缺血-再输损伤,通过向PCBP2进行治疗
Kexin Jia1, Yinhao Zhang1, Fanghong Li2
1School of Life Sciences, Beijing University of Chinese Medicine, Beijing 100029, China.
Acta pharmaceutica Sinica. B
|June 9, 2025
概括
乙酸 (ACT) 通过防止肝细胞铁灭,保护肝脏免受损伤. 它增强了多C结合蛋白2 (PCBP2) 的功能,稳定了系统Xc-并减少了肝脏缺血-再输液损伤 (HIRI) 的炎症.
科学领域:
- 肝病学 肝病学是一种肝病学.
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
背景情况:
- 肝脏缺血-再输损伤 (HIRI) 是肝移植的一个重要并发症.
- 肝细胞铁亡是HIRI的一个关键机制,但其调节和治疗点仍然不清楚.
研究的目的:
- 为了研究在HIRI期间肝细胞铁亡中的多C结合蛋白2 (PCBP2) 的作用.
- 通过向PCBP2和铁亡,探索actoside (ACT) 在缓解HIRI方面的治疗潜力.
主要方法:
- 对PCBP2下调和肝细胞铁亡之间的相关性分析.
- 研究PCBP2对系统Xc-稳定性和HIF1α/p300/HMGB1信号传输的影响.
- 在实验室和HIRI小鼠模型中评估ACT对PCBP2,Xc系统和炎症反应的影响.
- 评估ACT在PCBP2-Knockdown HIRI小鼠中的疗效.
主要成果:
- 降低PCBP2的调节与肝细胞铁和损害系统Xc-稳定性相关.
- 抑制PCBP2通过p300增强HIF1α转录活性,增加HMGB1分泌和M1巨细胞招募.
- ACT稳定了Slc3a2和Slc7a11mRNA,增强了PCBP2系统的Xc相互作用,并限制了HMGB1诱导的炎症.
- 抑制PCBP2降低了ACT在HIRI小鼠中的治疗效果.
结论:
- 通过促进PCBP2稳定系统Xc-并抑制HIF1α/p300-HMGB1通路,ACT减轻了HIRI.
- 这些发现确立了ACT作为HIRI的有希望的治疗剂,并为ferroptosis调节提供了新的见解.
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