J4 ›› 2011, Vol. 37 ›› Issue (2): 284-287.

• 基础研究 • 上一篇    下一篇

电压门控性氯离子通道2在血管紧张素Ⅱ促H9C2细胞肥大中的作用

牟荣1|张勇2|于春艳1|钟加滕2|孙连坤2|刘菲2|刘玉和1   

  1. 1.北华大学基础医学院病理学教研室|吉林 吉林 132016;2.吉林大学白求恩医学院病理生理学教研室|吉林 长春 130021
  • 收稿日期:2010-12-09 出版日期:2011-03-28 发布日期:2011-03-28
  • 通讯作者: 刘玉和(Tel:0432-64608556,E-mail:murong1129@163.com) E-mail:murong1129@163.com
  • 作者简介: 牟 荣(1985-),女|吉林省长春市人|医学硕士|主要从事肿瘤病理学方面的研究。

Promotion effect role of CLC-2 on promoting H9C2 cell hypertrophy by angiotensin Ⅱ

MU Rong1,ZHANG Yong2,YU Chun-yan1,ZHONG Jia-teng2,SUN Lian-kun2,LIU Fei2,LIU Yu-he1   

  1. 1.Department of Pathology,School of Basic Medical Sciences,Beihua University,Jilin 132016,China;2.Departmentof Pathophysiology,Norman Bethune College of Medicine,Jilin University,Changchun 130021,China
  • Received:2010-12-09 Online:2011-03-28 Published:2011-03-28
  • Supported by:

    吉林省科技厅科研基金资助课题(200705122);吉林省教育厅科研基金资助课题 (吉教科合字2009第156号

摘要:

目的:利用血管紧张素Ⅱ(AngⅡ)体外复制心肌细胞H9C2肥大模型,观察电压门控性氯离子通道2(CLC-2)对心肌细胞肥大过程的影响,阐明其作用机制。方法:将H9C2分为对照(control)组、AngⅡ组、坎地沙坦(candesartan)组、坎地沙坦与AngⅡ联合应用(candesartan+AngⅡ)组。流式细胞术检测各组H9C2细胞体积的变化,RT-PCR和Western blotting检测各组细胞中CLC-2 mRNA和蛋白表达的变化。结果:与对照组比较,AngⅡ组大体积细胞百分比明显增加(P<0.01),细胞中CLC-2 mRNA和蛋白表达水平均增加(P<0.01);与AngⅡ组比较,candesartan+AngⅡ组大体积细胞百分比降低(P<0.01),CLC-2 mRNA和蛋白表达也降低(P<0.01)。结论:AngⅡ可诱导心肌细胞H9C2肥大,其机制可能与CLC-2影响细胞内氯离子浓度有关。

关键词: 电压门控性氯离子通道2; 心肌细胞肥大; 血管紧张素Ⅱ

Abstract:

Abstract:Objective To set up H9C2 myocardial cell hyertrophy model with angiotensin Ⅱ(Ang Ⅱ) and  observe the effect of CLC-2 on the hypertrophy process of H9C2 myocardial cells and discuss its mechanism. Methods The H9C2 cells were divided into control group,AngⅡ group,candesartan group,and candesartan plus AngⅡ (candesartan + AngⅡ) group. The changes of H9C2 cell volume in various groups were detected by flow cytometry. The changes of CLC-2 mRNA and protein expressions were detected by RT-PCR and Western blotting methods. Results Compared with control group,the percent of the cells with large volume and the expressions of CLC-2 mRNA and protein in AngⅡ group were increased significantly(P<0.01). Compared with AngⅡ group, the percent of the  cells with large volume and the expression levels  of CLC-2 mRNA and protein in candesartan+AngⅡ group were decreased(P<0.01).
Conclusion AngⅡ can induce hypertrophy of H9C2 myocardial cells,and the mechanism may be related with that CLC-2 can affect the concentration of intracellular chloride.

Key words: voltage-gated chloride channels 2;cardiac hypertrophy;angiotensin Ⅱ

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