基础医学与临床 ›› 2012, Vol. 32 ›› Issue (3): 257-260.

• 研究论文 • 上一篇    下一篇

低氧无血清对乳鼠心肌细胞皮肤桥蛋白表达的影响

刘晓艳1,张秀芳2,魏英杰3,崔传珏4,史强5,白媛媛1   

  1. 1. 北京协和医学院 中国医学科学院 阜外心血管病医院 卫生部心血管疾病再生医学实验室
    2. 北京协和医学院 中国医学科学院 阜外心血管病医院卫生部心血管病疾病再生医学重点实验室
    3. 中国医学科学院 北京协和医学院 阜外心血管病医院
    4. 中国医学科学院北京协和医学院阜外心血管病医院
    5. 中国医学科学院 心血管病研究所 北京协和医学院 阜外心血管病医院 卫生部心血管疾病再生医学重点实验室
  • 收稿日期:2011-05-10 修回日期:2011-10-08 出版日期:2012-03-05 发布日期:2012-02-27
  • 通讯作者: 刘晓艳 E-mail:lxy-213@163.com
  • 基金资助:
    高等学校博士学科点专项科研基金资助课题;科技部“863”计划课题

Effect of hypoxia and serum deprivation on the expression of dermatopontin in cultured neonatal rat cardiomyocytes.

  • Received:2011-05-10 Revised:2011-10-08 Online:2012-03-05 Published:2012-02-27

摘要: 目的 在体外用低氧无血清条件模拟缺血心肌微环境,探讨心肌细胞皮肤桥蛋白(DPT)表达的变化。方法 以低氧无血清处理乳鼠心肌细胞0 、6 、12 和24 h,用实时反转录聚合酶链式反应检测DPT mRNA的表达变化,用Western blot检测DPT的蛋白表达变化。用酶联免疫吸附实验(ELISA)证实低氧无血清处理乳鼠心肌细胞24 h DPT蛋白的表达变化。结果 与0 h组相比,低氧无血清处理心肌细胞6 、12 、24 h DPT的mRNA和蛋白水平均显著升高(p<0.05)。ELISA的方法也检测到低氧无血清处理心肌细胞24 h DPT的表达水平高于正常对照组(p<0.05)。结论 低氧无血清可促进乳鼠心肌细胞DPT的表达,DPT可能在缺血缺氧引起的心室重构中发挥一定的作用。

关键词: 皮肤桥蛋白, 低氧无血清, 心肌细胞

Abstract: Objective To investigate the expression of dermatopontin (DPT) induced by hypoxia and serum deprivation (H/SD) which imitated the microenvironment of ischemic myocardium in cultured neonatal rat cardiomyocytes in vitro. Methods Cultured neonatal rat cardiomyocytes were disposed to H/SD for 0 , 6 , 12 and 24 h. The mRNA and protein expression of DPT was determined by real time RT-PCR and western blot , respectively. Using the method of enzyme-linked immunosorbent assay (ELISA) to determine the different expression of DPT between normal cultured cardiomyocytes and cardiomyocytes disposed to H/SD for 24 h. Results Compared with 0 h, the mRNA and protein level of DPT were significantly raised in cultured cardiomyocytes which were disposed to H/SD for 6 ,12 and 24 h (p<0.05). It was confirmed by the method of ELISA that compared with control group, the expression of DPT was higher in cardiomyocytes which were disposed to H/SD for 24 h. Conclusion The DPT expression in cultured neonatal rat cardiomyocytes was promoted by H/SD in vitro, which indicated that DPT may be invoved in the ventricular remolding process caused by hypoxia and ischemic in vivo.

Key words: dermatopontin, hypoxia and serum deprivation, cardiomyocyte

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