7,8-二氧黄通过p53/Nrf2通路减弱了西斯普拉丁诱导的心肌细胞亡和线粒体功能障碍
Zhen Tian1, Ting-Ting Tan1, Yu-Wei Hu1
1Department of Pharmacy, Northern Jiangsu People's Hospital, Yangzhou 225001, China; Yangzhou Key Laboratory of Clinical Pharmacy and Drug Research, Northern Jiangsu People's Hospital Affiliated to Yangzhou University, Yangzhou 225001, China; College of Pharmacy, Dalian Medical University, Dalian 116044, China.
Toxicology and applied pharmacology
|September 24, 2025
概括
7,8-二基黄 (7,8-DHF) 通过减少细胞死亡和炎症,保护心脏细胞免受化疗药物西斯普拉丁 (CDDP) 的影响. 这种化合物保持了线粒体的功能,并激活了抗氧化路径,为减轻心脏损伤提供了潜在的潜力.
科学领域:
- 心血管药理学心血管药理学
- 分子心脏病学分子心脏病学
- 化疗引起的心脏毒性
背景情况:
- 西斯丁 (CDDP) 是一种重要的化疗剂,但引起显著的心脏毒性,限制了其使用.
- 了解CDDP引起的心脏损伤的分子机制对于开发保护策略至关重要.
研究的目的:
- 调查7,8-二氧黄素 (7,8-DHF) 对CDDP诱导心脏毒性的心脏保护作用.
- 阐明潜在的分子机制,重点关注线粒体功能,亡和氧化还原信号通路.
主要方法:
- 心肌细胞暴露于具有或没有7,8-DHF的CDDP.
- 评估了细胞活力,乳酸脱酶 (LDH) 释放,线粒体膜潜力 (MMP) 和细胞亡标志物 (TUNEL,Bcl-2/Bax比).
- 分析了线粒体活性氧物种 (ROS) 水平,Nrf2/HO-1信号传递和p53蛋白表达.
- 使用药理学调节剂 (Nutlin-3a,Brusatol) 来确认途径的参与.
主要成果:
- 在心肌细胞中,CDDP诱导了剂量依赖的细胞毒性,细胞亡和线粒体功能障碍.
- 7,8-DHF显著减轻了CDDP诱导的损伤,保持了细胞活力,MMP,并减少了LDH释放和亡.
- 7,8-DHF抑制了ROS积累,对Nrf2/HO-1抗氧化途径进行了上调,并降低了p53表达和53BP1焦点.
- 药理上抑制/激活p53和Nrf2通路证实了它们在7,8-DHF心脏保护作用中的关键作用.
结论:
- 7,8-DHF在心肌细胞中显示出显著的心脏保护作用,防止CDDP诱导的心脏毒性.
- 保护通过维护线粒体功能,抑制亡,激活Nrf2驱动的抗氧化反应和调节p53通路来调节.
- 7,8-DHF显示出作为缓解化疗相关心脏损伤的治疗剂的潜力.
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