来自心力衰竭患者的循环细胞外囊泡抑制人类心肌细胞活动
Ke Zhen1, Xiaojuan Wei2, Zelun Zhi3
1Beijing Anzhen Hospital, Capital Medical University, Beijing, 100011, China.
Journal of cardiovascular translational research
|October 9, 2024
概括
来自心力衰竭 (HF) 患者的循环细胞外囊泡 (CEV) 促进心脏重塑. 这些由HF衍生的CEVs诱导心脏细胞中的炎症,纤维化和内质网膜应激,促进疾病的进展.
科学领域:
- 心血管生物学 心血管生物学
- 细胞外囊泡研究研究
- 心脏衰竭病理生理学 病理生理学
背景情况:
- 细胞外囊泡 (EVs) 在心脏重塑中的作用得到了认可.
- 在心力衰竭 (HF) 中循环EVs (CEVs) 的特定功能仍然不清楚.
- 了解CEVs的分子机制对于获得HF进展见解至关重要.
研究的目的:
- 为了确定从HF患者与健康对照中的CEVs中的蛋白质差异.
- 研究HF衍生CEVs (HCEVs) 对心脏细胞的功能影响.
- 阐明HCEVs在病态心脏重塑中的作用.
主要方法:
- 使用4D无标签量化对HF患者 (HCEV) 和健康对照 (NCEV) 的CEV进行蛋白质组分析.
- 使用暴露于HCEV和NCEV的人类心肌细胞 (HCM) 和心脏纤维细胞 (HCF) 的体外实验.
- 评估细胞反应,包括炎症,TAG积累,ER压力,自,分化和细胞外基质沉积.
主要成果:
- 与NCEVs相比,HCEVs显示了6个上调和9个下调蛋白质的改变蛋白质配置.
- 在HCEV中升级调节的蛋白质与代谢过程,炎症和氧化减少有关.
- HCEV中的下调蛋白与细胞发育,分化和增殖有关.
- 在HCMs中,HCEVs诱导炎症,TAG积累,ER压力和改变的自.
- HCEVs促进了HCF分化,放大了亲炎性/亲纤维性因素,并增加了ECM沉积.
- 在HCF中,HCEV与增加的MMP9和减少的自流相关.
结论:
- 来自心力衰竭患者 (HCEVs) 的循环EV在推进HF方面发挥着重要作用.
- 通过诱导炎症,纤维化和细胞应激,HCEVs有助于病态心脏重塑.
- 这些发现强调了HCEV作为心力衰竭管理的潜在治疗点.
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