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PLCE1增强了线粒体功能障碍,以促进GSDME介导的皮रोप托斯在多克索鲁比诱导的心脏毒性

Maierhaba Tuersuntuoheti¹, Fei Peng², Juexing Li¹

¹Department of Cardiology, Jinshan Hospital, Fudan University, Shanghai, China; Department of Internal Medicine, Shanghai Medical College, Fudan University, Shanghai, China.

Biochemical pharmacology

|March 18, 2024

概括

抑制脂酶Cepsilon 1 (PLCE1) 保护心脏细胞免受多克索鲁比诱导的热,并改善心脏功能. 这一发现为缓解化疗相关心脏毒性提供了一个新的治疗策略.

科学领域:

心脏病学心脏病学
分子生物学分子生物学
细胞死亡研究细胞死亡研究

背景情况:

多克索鲁比 (DOX) 化疗导致严重的心脏毒性,限制了其使用.
脂酶C epsilon 1 (PLCE1) 是一种新型脂酶C (PLC) 家族成员,参与酸信号传递.
新出现的证据将化疗药物与炎症性细胞死亡的一种形式 - - 热致死联系起来,并涉及类化物信号在细胞死亡执行过程中.

研究的目的:

调查PLCE1在多克索鲁比 (DOX) 诱导的心脏毒性的作用.
在DOX诱导的心脏损伤的背景下阐明热的机制.
探索PLCE1作为潜在的心脏毒性治疗点.

主要方法:

在人心肌细胞AC16细胞系的体外实验中使用.
使用体内C57BL/6小鼠模型研究DOX诱导的心脏损伤.
评估了热,线粒体功能,活性氧物种 (ROS) 积累和细胞活力.

主要成果:

多克索鲁比治疗导致心肌细胞中PLCE1表达增加和热性细胞死亡,与心脏功能负相关.
由DOX诱导的烧是由Gasdermin E (GSDME) 介导的,并涉及线粒体损伤.
抑制PLCE1改善了线粒体功能障碍,减少了ROS,恢复了线粒体膜潜力,并增强了细胞活力.
在体内研究证实,抑制PLCE1可减少热性细胞死亡,改善心脏功能.

结论:

抑制PLCE1显示出对心肌细胞中多克索鲁比诱导的热性损伤的保护作用.
这项研究为开发针对PLCE1的新疗法提供了理论基础,以改善化疗期间的心脏功能.

关键词:

德克索鲁比辛是一种多克索鲁比辛.线粒体中的线粒体.PLCE 1 PLCE 1 是一个小组.脂酶 C epsilon 1 1 的使用方法热灭菌的发生.

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