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人参-三七-川芎(GSC)提取物通过AMPK途径调节线粒体自噬改善糖尿病诱导的内皮细胞衰老。

Ginseng-Sanqi-Chuanxiong (GSC) Extracts Ameliorate Diabetes-Induced Endothelial Cell Senescence through Regulating Mitophagy via the AMPK Pathway.

作者信息

Wang Xue, Zhang Jia-Qi, Xiu Cheng-Kui, Yang Jing, Fang Jing-Yi, Lei Yan

机构信息

Beijing Key Laboratory of Research of Chinese Medicine on Preventional and Treatment for Major Diseases, Experimental Research Center, China Academy of Chinese Medical Sciences, 100700 Beijing, China.

Xiyuan Hospital, China Academy of Chinese Medical Sciences, 100700 Beijing, China.

出版信息

Oxid Med Cell Longev. 2020 Sep 7;2020:7151946. doi: 10.1155/2020/7151946. eCollection 2020.

DOI:10.1155/2020/7151946
PMID:32963699
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7495226/
Abstract

Vascular endothelial senescence induced by high glucose and palmitate (HG/PA) contributes to endothelial dysfunction, which leads to diabetic cardiovascular complications. Reduction of endothelial senescence may attenuate these pathogenic processes. This study is aimed at determining whether Ginseng-Sanqi-Chuanxiong (GSC) extracts, traditional Chinese medicine, can ameliorate human aortic endothelial cell (HAEC) senescence under HG/PA-stressed conditions and further explore the underlying mechanism. We found that GSC extracts significantly increased antisenescent activity by reducing the HG/PA-induced mitochondrial ROS (mtROS) levels in senescent HAECs. GSC extracts also induced cellular mitophagy formation, which mediated the effect of GSC extracts on mtROS reduction. Apart from this, the data showed that GSC extracts stimulated mitophagy via the AMPK pathway, and upon inhibition of AMPK by pharmacological and genetic inhibitors, GSC extract-mediated mitophagy was abolished which further led to reverse the antisenescence effect. Taken together, these data suggest that GSC extracts prevent HG/PA-induced endothelial senescence and mtROS production by mitophagy regulation via the AMPK pathway. Thus, the induction of mitophagy by GSC extracts may provide a novel therapeutic candidate for cardiovascular protection in metabolic syndrome.

摘要

高糖和棕榈酸酯(HG/PA)诱导的血管内皮细胞衰老会导致内皮功能障碍,进而引发糖尿病心血管并发症。减轻内皮细胞衰老可能会减轻这些致病过程。本研究旨在确定中药人参-三七-川芎(GSC)提取物是否能改善HG/PA应激条件下人主动脉内皮细胞(HAEC)的衰老,并进一步探究其潜在机制。我们发现,GSC提取物通过降低HG/PA诱导的衰老HAEC中线粒体活性氧(mtROS)水平,显著增强了抗衰老活性。GSC提取物还诱导了细胞线粒体自噬的形成,这介导了GSC提取物对mtROS降低的作用。除此之外,数据显示GSC提取物通过AMPK途径刺激线粒体自噬,并且在使用药理学和基因抑制剂抑制AMPK后,GSC提取物介导的线粒体自噬被消除,这进一步导致抗衰老作用的逆转。综上所述,这些数据表明GSC提取物通过AMPK途径调控线粒体自噬,从而预防HG/PA诱导的内皮细胞衰老和mtROS产生。因此,GSC提取物诱导的线粒体自噬可能为代谢综合征中的心血管保护提供一种新的治疗候选方法。

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