›› 2011, Vol. 23 ›› Issue (1): 35-037.doi: 10.3969/j.issn.1004-616x.2011.01.009

• 论著 • 上一篇    下一篇

儿茶素对血管平滑肌细胞的抑制作用及其可能的机制

赵锦燕,林 薇,洪振丰,叶蕻芝*   

  1. 福建中医药大学,福建中西医结合研究院,福建
  • 收稿日期:2010-08-30 修回日期:2010-11-25 出版日期:2011-01-30 发布日期:2011-01-30
  • 通讯作者: 叶蕻芝

Inhibitory effects and possible mechanisms of catechin on vascular smooth muscle cells

  1. Fujian Academy of Integrative Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou
  • Received:2010-08-30 Revised:2010-11-25 Online:2011-01-30 Published:2011-01-30
  • Contact: YE Hong-zhi

摘要: 探讨儿茶素对血管平滑肌细胞生长的抑制作用及其可能的作用机制。 方法:采用MTT法检测不同剂量儿茶素对血管平滑肌细胞的抑制作用,分别用50、100、150、200、250、300 μg/ml的儿茶素作用血管平滑肌细胞24和48 h后,观察细胞形态学的改变, 并用RT-PCR检测儿茶素对血管平滑肌细胞基质金属蛋白酶-2(matrix metalloproteinase-2, MMP-2)和基质金属蛋白酶抑制因子(tissue inhibitor of matrix metalloproteinase-1, TIMP-1) mRNA表达的影响。 结果: 250 μg/ml儿茶素明显抑制细胞的生长,且明显下调血管平滑肌细胞中MMP-2 mRNA的表达,并同时上调TIMP-1 mRNA的表达。 结论: 儿茶素可以抑制血管平滑肌细胞的生长并且调节MMP-2和TIMP-1 mRNA的表达水平。

关键词: 儿茶素, 血管平滑肌细胞, 基质金属蛋白酶-2, 金属蛋白酶抑制剂-1

Abstract: To explore the inhibitory effects of catechin on vascular smooth muscle cells (VSMCs)and its possible mechanisms. METHODS: After VSMCs were exposed to different doses of catechin at 50, 100, 150, 200, 250, 300 μg/ml, for 24 h and 48 h cell morphology was observed. MTT assay was used to test cell viability, mRNA expressions of MMP-2 and TIMP-1 were detected by RT-PCR analysis. RESULTS: Cell growth was inhibited after exposure to 250 μg/ml, and mRNA expression MMP-2 was down-regulated. Meanwhile mRNA expression of TIMP-1 was up-regulated. CONCLUSION: Catechin could inhibit VSMCs and regulate mRNA expressions of MMP-2 and TIMP-1.

Key words: catechin, vascular smooth muscle cells, matrix metalloproteinase-2, tissue inhibitor of matrix metalloproteinase-1