基础医学与临床 ›› 2011, Vol. 31 ›› Issue (12): 1326-1329.

• 研究论文 • 上一篇    下一篇

重组ACE2抑制人脐动脉平滑肌细胞Profilin-1表达及增殖

于茜1,钟久昌2,金海燕3,沈伟利4,叶佳颖1,郭俊明1,周细武1   

  1. 1. 宁波大学医学院
    2. 上海交通大学医学院附属瑞金医院高血压研究所
    3. 上海交通大学医学院附属瑞金医院
    4. 上海交通大学医学院
  • 收稿日期:2011-02-22 修回日期:2011-06-20 出版日期:2011-12-05 发布日期:2011-12-05
  • 通讯作者: 钟久昌 E-mail:jiuchangzhong@yahoo.com.cn
  • 基金资助:
    国家重点基础研究发展计划;国家重点基础研究发展计划;国家自然科学基金;浙江省科技计划面上科研项目

Inhibition of Profilin-1 Expression and Cell Proliferation by Recombinant ACE2 in Human Umbilical Arterial Smooth Muscle Cells

  • Received:2011-02-22 Revised:2011-06-20 Online:2011-12-05 Published:2011-12-05
  • Contact: ZHONG Jiu-Chang E-mail:jiuchangzhong@yahoo.com.cn

摘要: 摘要 目的:探讨重组血管紧张素转换酶2(ACE2)基因对血管平滑肌细胞前纤维蛋白-1(Profilin-1)表达及细胞增殖的影响。方法:培养人脐动脉平滑肌细胞(HUASMC),用重组ACE2基因(rACE2)干预,进行血管紧张素II(Ang II)刺激实验,分别用MTT法、实时定量PCR及Western blot检测HUASMC增殖与Profilin-1表达。 结果:与对照组相比,经Ang II(100 nmol /L)刺激6 h后,HUASMC中Profilin-1 表达明显增高(3.50±0.30 vs. 1.00±0.10, P<0.05)。而重组ACE2基因干预显著抑制上述增加(1.73±0.12 vs. 3.50±0.30, P<0.05)。结论:ACE2基因过表达可明显逆转HUASMC中Ang II诱导的Profilin-1表达上调。

关键词: 关键词:血管紧张素转换酶2, 前纤维蛋白-1, 高血压病, 血管紧张素II, 细胞增殖

Abstract: Abstract: Objective:To investigate the effects of the recombinant angiotensin-converting enzyme 2(rACE2)gene on Profilin-1 expression and cell proliferation in vascular smooth muscle cell. Methods: The cultured human umbilical arterial smooth muscle cells (HUASMC) were stimulated by Ang II in the presence and absence of rACE2 gene, the HUASMC proliferation and Profilin-1 expression level were determined with MTT, real-time PCR and Western blotting,respectively. Results: Compared with the control, Profilin-1 expression were significantly increased in HUASMC (3.50±0.30 vs. 1.00±0.10; n=5~6, P<0.05) by stimulating with Ang II(100 nmol /L)for 6 hours, which were inhibited by rACE2 gene intervention (1.73±0.12 vs. 3.50±0.30; n=5~6, P<0.05). Conclusion: ACE2 gene over-expression contributes to the reversion of the Ang II- induced Profilin-1 expression and proliferation in human umbilical arterial smooth muscle cells.

Key words: Key words: angiotensin-converting enzyme 2, Profilin-1, hypertension, angiotensin II, cell proliferation

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