南方医科大学学报 ›› 2025, Vol. 45 ›› Issue (11): 2427-2436.doi: 10.12122/j.issn.1673-4254.2025.11.15

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黄芪甲苷通过抑制PINK1/Parkin通路调控细胞线粒体自噬减轻D-半乳糖诱导的内皮细胞衰老

易明1(), 罗烨2, 吴露1, 吴泽衡3, 蒋翠平1, 陈史钰3, 柯晓3()   

  1. 1.浏阳市中医医院(湖南中医药大学附属第二中西医结合医院)心内科,湖南 浏阳 410300
    2.北京大学深圳医院心内科,广东 深圳 518057
    3.中国医学科学院阜外医院深圳医院心内科,广东 深圳 518057
  • 收稿日期:2025-05-09 出版日期:2025-11-20 发布日期:2025-11-28
  • 通讯作者: 柯晓 E-mail:mingming8909@163.com;xiaokehospital@126.com
  • 作者简介:易 明,硕士,主治医师,E-mail: mingming8909@163.com
  • 基金资助:
    湖南省自然科学基金(2024JJ9572);深圳市科技计划项目(JCYJ20220531091611026);深圳市科技计划项目(JCYJ20230807150803007)

Astragaloside IV alleviates D-GAL-induced endothelial cell senescence by promoting mitochondrial autophagy via inhibiting the PINK1/Parkin pathway

Ming YI1(), Ye LUO2, Lu WU1, Zeheng WU3, Cuiping JIANG1, Shiyu CHEN3, Xiao KE3()   

  1. 1.Department of Cardiology, Liuyang Hospital of Traditional Chinese Medicine (Second Hospital of Integrated Traditional Chinese and Western Medicine Affiliated to Hunan University of Chinese Medicine), Liuyang 410300, China
    2.Department of Cardiology, Peking University Shenzhen Hospital, Shenzhen 518057, China
    3.Department of Cardiology, Shenzhen Hospital of Fuwai Hospital, Chinese Academy of Medical Sciences, Shenzhen 518057, China
  • Received:2025-05-09 Online:2025-11-20 Published:2025-11-28
  • Contact: Xiao KE E-mail:mingming8909@163.com;xiaokehospital@126.com

摘要:

目的 探究黄芪甲苷Ⅳ(AS-IV)通过PINK1/Parkin信号通路,调控细胞线粒体自噬水平减轻D-半乳糖(D-GAL)内皮细胞(HUVEC)衰老的作用机制。 方法 将体外培养的人脐静脉内皮细胞随机分为5组:空白对照组(NC组)、D-GAL(40 g/L D-GAL)组、AS-IV(200 μmol/L)组、D-GAL+AS-IV(40 g/L D-GAL+200 μmol/L)组,D-GAL+AS-IV+MTK458(40 g/L D-GAL+200 μmol/L+25 μmol/L)组,干预48 h。评估细胞增殖、迁移和血管生成能力;检测细胞凋亡、活性氧水平、线粒体膜电位,以及检测自噬相关蛋白(LC3-II/LC3-I)和PINK1/Parkin通路蛋白的表达。 结果 经AS-IV干预后,D-GAL对HUVEC细胞活力的抑制作用显著降低(P<0.05),AS-IV有效缓解D-GAL诱导的HUVEC管状结构形成障碍,促进血管生成(P<0.05)、恢复细胞的迁移能力(P<0.05),D-GAL诱导的HUVEC细胞中衰老相关β-半乳糖苷酶(SA-β-Gal)染色阳性率也显著降低(P<0.05),并抑制衰老相关基因P21和P53的表达。AS-IV恢复D-GAL诱导的线粒体膜电位,降低细胞内活性氧水平(P<0.05);并抑制D-GAL诱导的HUVEC细胞中自噬体与溶酶体的融合,阻止自噬流的完成。当加入线粒体自噬激动剂MTK458(25μmol/L)后,与D-GAL+AS-IV组相比,D-GAL+AS-IV+MTK458组中细胞黄色斑点明显增加(P<0.05),P21、P53、PINK1、Parkin、LC3、Beclin等蛋白表达上升(P<0.05)。 结论 AS-IV通过抑制PINK1/Parkin通路调控线粒体自噬,从而减轻D-GAL诱导的内皮细胞衰老。

关键词: 黄芪甲苷, PINK1/Parkin信号通路, 线粒体自噬, D-半乳糖, 内皮细胞, 细胞衰老

Abstract:

Objective To explore the mechanism by which astragaloside IV (AS-IV) alleviates D-galactose (D-GAL)-induced senescence in human umbilical vein endothelial cells (HUVECs). Methods Cultured HUVECs were treated with D-GAL (40 g/L), AS-IV (200 μmol/L), D-GAL+AS-IV, or D-GAL+AS-IV+MTK458 (a mitochondrial autophagy agonist, 25 μmol/L) for 48 h, and the changes in cell proliferation, migration, and angiogenesis capacity were evaluated. Cell apoptosis, reactive oxygen species (ROS) levels, mitochondrial membrane potential, and expressions of autophagy-related proteins (LC3-II/LC3-I) and PINK1/Parkin pathway proteins in the treated cells were detected. Results AS-IV treatment significantly reduced the inhibitory effect of D-GAL on HUVEC viability, effectively alleviated D-GAL-induced impairment of tube-forming ability, and promoted angiogenesis and migration ability of the cells. AS-IV also significantly reduced the rate of D-GAL-induced HUVECs positive for senescence-associated β-galactosidase (SA-β-Gal) staining and inhibited the expression of senescence-related genes P21 and P53. AS-IV restored mitochondrial membrane potential and reduced intracellular ROS levels in D-GAL-induced HUVECs, and inhibited the fusion of autophagosomes and lysosomes to prevent the completion of autophagic flux. In HUVECs treated with both D-GAL and AS-IV, the application MTK458 significantly increased the number of yellow spots and enhanced the expressions of P21, P53, PINK1, Parkin, LC3, and Beclin proteins. Conclusion AS-IV alleviates D-GAL-induced endothelial cell senescence by inhibiting the PINK1/Parkin pathway to regulate mitochondrial autophagy.

Key words: astragaloside, PINK1/Parkin signaling pathway, mitochondrial autophagy, D-galactose, endothelial cells, cellular senescence