塞沃弗兰通过乌比基特异性蛋白酶7/酸酶和素同位素调制缓解心肌细胞铁亡
Jiashun Xu1, Zongyue Wang1, Huifang Wei1
1Department of Anesthesiology, No. 905 Hospital of People's Liberation Army Navy, Shanghai, 200050, People's Republic of China.
Drug design, development and therapy
|July 28, 2025
概括
塞沃弗兰通过抑制USP7,铁死的一个关键因素,保护心脏免受缺血-再输液损伤. 这种麻醉剂稳定心肌细胞,为心脏病发作恢复提供了潜在的治疗策略.
科学领域:
- 心脏病学 心脏病学
- 麻醉学 麻醉学
- 细胞生物学 细胞生物学
背景情况:
- 心肌缺血-反 (I/R) 损伤是急性心肌梗塞的一个关键并发症.
- 迫切需要有效的心脏保护策略来缓解I / R损伤.
- 一种常见的麻醉剂Sevoflurane (Sev) 在心脏保护方面表现有前途.
研究的目的:
- 为了调查Sevoflurane是否减轻心肌细胞中的铁亡.
- 为了确定Sevoflurane是否抑制USP7介导的PTEN/PI3K/AKT通路.
- 为了阐明Sevoflurane的心脏保护作用背后的分子机制.
主要方法:
- 已建立的老鼠心肌I/R和H9c2细胞低氧/低氧化 (H/R) 损伤模型.
- 使用cTnT,血液动力学参数和组织学评估心肌损伤.
- 通过Co-IP和CHX测试评估了细胞活力,铁灭标记物 (GSH,MDA,Fe2+,ROS) 和USP7对PTEN稳定性的调节.
主要成果:
- 在I/R模型中,塞沃兰显著降低了心脏损伤标志物,改善了心脏功能,并减少了心脏病发作的大小.
- 塞沃兰增强了H9c2细胞活力,并抑制了亡和铁亡.
- 塞沃兰逆转了H/R诱导的USP7过度表达和铁,USP7过度表达减少了Sev的保护作用.
结论:
- 塞沃弗兰通过抑制USP7,破坏PTEN稳定,并激活PI3K/AKT通路来保护心肌I/R损伤,从而抑制铁亡.
- 抑制USP7是一种潜在的治疗点,可以保护心肌.
- 这项研究阐明了Sevoflurane对铁亡的心脏保护作用的机制.
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