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在心力衰竭中通过AMPK/SIRT1/PGC-1α信号通路进行CTRP6介导的心脏保护

Tingting Fan¹, Ningjun Zhu², Mengli Li²

¹Department of Cardiology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China.

Experimental physiology

|September 26, 2024

概括

与C1q/TNF相关的蛋白6 (CTRP6) 通过激活AMPK/SIRT1/PGC-1α通路来保护心力衰竭. 这项研究表明,在心力衰竭模型中,CTRP6可以减少心脏功能障碍,亡和氧化应激.

科学领域:

心血管生物学心血管生物学
分子心脏病学分子心脏病学
生物化学生物化学

背景情况:

心力衰竭 (HF) 是一个主要的全球健康问题,治疗选择有限.
与C1q/TNF相关的蛋白6 (CTRP6) 在HF病变发生过程中的作用尚不清楚.
在结构上,CTRP6与adiponectin相似,这是一种具有已知的心血管影响的蛋白质.

研究的目的:

调查CTRP6在减轻心力衰竭和减少喷射率 (HFrEF) 的治疗潜力.
阐明CTRP6对心脏功能和细胞应激通路的影响的分子机制.

主要方法:

建立了一个因异二醇诱导的HFrEF小鼠模型.
腺病毒介导的CTRP6过度表达 (Ad-CTRP6) 通过尾静脉注射.
用心声和组织学评估心脏功能;分子通路 (AMPK/SIRT1/PGC-1α) 和细胞过程 (细胞亡,氧化应激,线粒体功能) 在体内和体外分析.

主要成果:

在人类HF患者中,发现CTRP6水平较低.
在HFrEF小鼠模型中,Ad-CTRP6的使用显著改善了心脏功能障碍,减少了心肌细胞亡,氧化应激和炎症.
CTRP6激活了AMPK/SIRT1/PGC-1α通路,恢复了线粒体平衡和功能.
实验室研究证实了CTRP6对异二醇诱导的心肌细胞损伤的保护作用,部分由AMPK抑制剂 (化合物C) 逆转.

结论:

在HFrEF中,CTRP6显示出显著的心脏保护作用.
通过激活AMPK/SIRT1/PGC-1α信号通路,CTRP6可以缓解心脏功能障碍和细胞损伤.
CTRP6代表了治疗心力衰竭的潜在治疗目标.

关键词:

这就是AMPKK.在CTRP6中使用.在PGC-1α中.一个SIRT1系统.心脏衰竭是因为心脏衰竭.这是线粒体的线粒体.

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