埃弗罗利斯诱导的内皮细胞的超透性导致肺损伤
Xiaolin Chen1,2, Jianhui Chen1, Shuihong Liu1
1Department of Clinical Laboratory, Pingxiang People's Hospital, Pingxiang 337000, China.
Experimental biology and medicine (Maywood, N.J.)
|December 30, 2023
概括
埃弗罗利斯通过独立于mTOR信号的依赖机制增加肺内皮透气性,从而导致肺损伤. 这项研究阐明了导致药物诱导的肺损伤的途径.
科学领域:
- 药理学 药理学是指药理学的学科.
- 肺部医学 肺部医学
- 细胞生物学 细胞生物学
背景情况:
- 像everolimus这样的拉帕素 (mTOR) 抑制剂的哺乳动物标与肺损伤有关.
- 这种药物诱导的肺损伤背后的精确机制尚未完全理解.
- 内皮细胞屏障功能障碍是肺损伤发病的一个关键因素.
研究的目的:
- 调查埃弗罗利斯增加肺内皮透气性,导致肺损伤的假设.
- 为了阐明底层的细胞和分子机制 everolimus诱导的肺损伤.
主要方法:
- 在实验室中评估了Everolimus对人类肺微血管内皮细胞 (HPMEC) 透性的影响.
- 建立了一个小鼠模型,用腹膜内常注射来研究肺血管透性.
- 在机理学研究中使用了氨酸和PKCα/MLCK抑制剂.
主要成果:
- 埃弗罗利莫斯增加了HPMEC的透性,与MLC酸化和F-actin应激纤维形成有关.
- 在HPMEC中,Everolimus诱导了细胞内 (Ca2+) 泄漏,而诺丁使其正常化.
- 在体内,Everolimus导致肺血管屏障功能障碍,由瑞诺丁,PKCα和MLCK抑制剂减弱.
结论:
- 埃弗罗利斯通过mTOR独立的机制诱导肺内皮细胞的超透性.
- 这种超透性涉及MLC酸化介导的内皮细胞收缩,依赖于Ca2+信号传递.
- 这些发现为Everolimus诱导的肺损伤的发病过程提供了关键的见解.
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