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Updated: Sep 11, 2025

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Extraction of Extracellular Vesicles from Whole Tissue
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瘤细胞外囊泡加重心肌缺血/再输液损伤中的线粒体损伤
Zhongting Mei1, Qian Liu1, Guoxin Liu1
1State Key Laboratory of Frigid Zone Cardiovascular Diseases (SKLFZCD), Department of Pharmacology (State Key Laboratoray-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|August 11, 2025
概括
癌症会加剧心血管疾病 (CVD) 的风险,特别是在皮肤穿冠状动脉干预 (PCI) 后. 来自癌症的细胞外囊泡 (EVs) 通过释放miR-485-3p恶化心脏损伤,从而损害线粒体功能.
科学领域:
- 心脏病学 心脏病学
- 在瘤学瘤学.
- 分子生物学分子生物学
- 生物化学 生物化学
背景情况:
- 癌症患者面临心血管疾病 (CVD) 的风险增加.
- 癌症和心血管疾病之间的机制联系,特别是皮肤穿刺后冠状动脉干预 (PCI),尚未完全理解.
- 心脏病学家观察到越来越多的患有心血管疾病的癌症患者和接受PCI的癌症患者.
研究的目的:
- 研究癌症对接受PCI的患者心血管结果的影响.
- 阐明癌症影响心肌损伤和线粒体功能的机制.
- 确定潜在的治疗点,以减轻与癌症相关的心脏并发症.
主要方法:
- 对癌症患者与接受PCI的非癌症患者的死亡率数据的元分析.
- 试验小鼠肺癌模型,以评估心脏线粒体功能障碍和缺血/再输 (I/R) 损伤.
- 在体内和体外使用来自癌症小鼠的血细胞外囊泡 (EV) 的研究.
- 使用脂涂纳米颗粒来抑制瘤EV分泌的干预 (GW4869).
- 在小鼠模型中,阿诺相关病毒6介导的肺特异性miR-485-3p海绵的输送.
主要成果:
- 分析显示,在接受PCI的癌症患者中,全因和心血管死亡率更高.
- 在小鼠模型中,癌症加剧了心肌I/R损伤和线粒体功能障碍.
- 来自癌症小鼠的血EV恶化了心脏I/R损伤.
- 抑制瘤EV分泌改善了心脏损伤.
- 向miR-485-3p抑制了心脏损伤和线粒体功能障碍后I / R.
- miR-485-3p在转录后抑制PPARGC1A/PGC-1α,抑制线粒体复合体I和ATP的合成.
结论:
- 在接受PCI的患者中,癌症显著增加死亡风险.
- 与癌症相关的细胞外囊泡,特别是那些富含miR-485-3p的细胞外囊泡,是心脏损伤和线粒体功能障碍的关键媒介.
- 针对癌症衍生的EV和miR-485-3p,为癌症患者的心脏毒性管理提供了潜在的治疗策略.
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