吉林大学学报(医学版) ›› 2019, Vol. 45 ›› Issue (04): 872-876.doi: 10.13481/j.1671-587x.20190422

• 基础研究 • 上一篇    

小檗碱通过ROS/JNK信号通路对AngⅡ诱导的人脐静脉血管内皮细胞凋亡的抑制作用及其机制

岳胜, 乔国华, 岳磊, 朱平   

  1. 郑州大学附属洛阳中心医院急诊科, 河南 洛阳 471000
  • 收稿日期:2018-10-29 发布日期:2019-08-02
  • 作者简介:岳胜(1980-),男,河南省洛阳市人,副主任医师,医学硕士,主要从事急危重症和心血管系统疾病方面的研究。
  • 基金资助:
    河南省卫计委科技攻关项目资助课题(182102311239)

Inhibitory effect of berberine on Ang Ⅱ-induced apoptosis of human umbilical vein endothelial cells via ROS/JNK signaling pathway and its mechanism

YUE Sheng, QIAO Guohua, YUE Lei, ZHU Ping   

  1. Department of Emergency, Affiliated Luoyang Central Hospital, Zhengzhou University, Luoyang 471000, China
  • Received:2018-10-29 Published:2019-08-02

摘要: 目的:探讨小檗碱对血管紧张素Ⅱ(AngⅡ)诱导的人脐静脉血管内皮细胞(HUVECs)凋亡的影响及其机制,阐明小檗碱抗动脉粥样硬化(AS)的机制。方法:体外培养的HUVECs分为对照组(未处理),AngⅡ组(加入1 μmol·L-1 AngⅡ处理24 h),低、中和高剂量小檗碱组(1 μmoL·L-1 AngⅡ预处理3 h后,分别加入25、50和100 μmol·L-1小檗碱处理24 h)。采用MTT法和流式细胞术分别检测各组细胞的存活率和凋亡率,活性氧(ROS)检测试剂盒检测各组细胞中ROS水平,Western blotting法检测各组细胞中磷酸化c-Jun氨基末端激酶(p-JNK)、B淋巴细胞瘤-2基因(Bcl-2)、Bcl-2相关X蛋白(Bax)和活化的含半胱氨酸的天冬氨酸蛋白水解酶3(cleaved caspase-3)蛋白表达水平。结果:与对照组比较,AngⅡ组细胞存活率和Bcl-2蛋白表达水平降低(P<0.05),细胞凋亡率、ROS水平及p-JNK、Bax和cleaved caspase-3蛋白表达水平均升高(P<0.05);与AngⅡ组比较,各剂量小檗碱组细胞存活率和Bax蛋白表达水平明显升高(P<0.05),细胞凋亡率、ROS水平及p-JNK、Bax和cleaved caspase-3蛋白表达水平均降低(P<0.05),且呈剂量依赖性。结论:小檗碱可抑制AngⅡ诱导的HUVECs凋亡,其作用机制可能与抑制ROS/JNK信号通路有关。

关键词: 血管紧张素Ⅱ, 人脐静脉血管内皮细胞, 小檗碱, 细胞凋亡

Abstract: Objective:To investigate the effect of berberine on the angiotensin Ⅱ (AngⅡ)-induced apoptosis of human umbilical vein endothelial cells (HUVECs) and its mechanism,and to clarify the anti-AS mechanism of berberine. Methods:The HUVECs cultured in vitro were divided into control group (untreated), AngⅡ group (treated with 1 μmoL·L-1 Ang Ⅱ for 24 h) and low,medium,and high doses of berberine groups (after pretreated with 1 μmoL·L-1 Ang Ⅱ for 3 h, treated with 25, 50, and 100 μmoL·L-1 berberine for 24 h, respectively).The survival rates and the apoptotic rates of cells in each group were detected by MTT method and flow cytometry,the ROS level in each group was detected by ROS kit, and the expression levels of p-JNK, Bcl-2, Bax, and cleaved caspase-3 proteins in each group were detected by Western blotting method. Results:Compared with control group, the survival rate of cells and the Bcl-2 protein expression level in AngⅡgroup were decreased(P<0.05), while the apoptotic rate of cells, the ROS level and the expression levels of p-JNK, Bax, and cleaved caspase-3 proteins were increased(P<0.05); compared with AngⅡgroup, the survival rates of cells and the expression levels of Bax protein in low,medium, and high doses of berberine groups were significantly increased(P<0.05), while the apoptotic rates of cells, the ROS levels and the expression levels of p-JNK, Bax, and cleaved caspase-3 proteins were decreased(P<0.05) in a concentration-dependent manner. Conclusion:Berberine can inhibit the apoptosis of HUVECs induced by AngⅡ, which may be related to the inhibition of ROS/JNK signaling pathway activation.

Key words: angiotensin Ⅱ, human umbilical vein endothelial cells, berberine, apoptosis

中图分类号: 

  • R285.5