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3,4,5-三羟基苯甲酸通过线粒体途径诱导人肝癌细胞SMMC-7721的凋亡

赵文静, 牛凤兰   

  1. 吉林大学公共卫生学院, 长春 130021
  • 收稿日期:2008-05-05 修回日期:1900-01-01 出版日期:2009-02-10 发布日期:2009-02-10
  • 通讯作者: 牛凤兰

Trihydroxybenzoic Acid on Induction of the Apoptosis of Human Hepatocarcinoma SMMC-7721 Cells by Mitochondrial-dependent Pathway

ZHAO Wen-Jing, NIU Feng-Lan*   

  1. School of Public Health, Jilin University, Changchun 130021, China
  • Received:2008-05-05 Revised:1900-01-01 Online:2009-02-10 Published:2009-02-10
  • Contact: NIU Feng-Lan

摘要: 采用四甲基偶氮唑盐(MTT)观察3,4,5-三羟基苯甲酸(TBA)对人肝癌SMMC-7721细胞的增殖抑制作用; 通过流式细胞仪检测细胞凋亡、细胞内活性氧(ROS)及线粒体膜电位的变化, 用比色法测定Caspase-9和Caspase-3蛋白活性, 探讨TBA 诱导SMMC-7721细胞凋亡的分子机制. 研究结果表明, TBA对SMMC-7721细胞生长具有显著的抑制作用并诱导其凋亡, 诱导SMMC-7721细胞凋亡作用可能通过线粒体信号传导通路实现.

关键词: 3,4,5-三羟基苯甲酸, 人肝癌SMMC-7721细胞, 凋亡, 线粒体膜电位

Abstract: Trihydroxybenzoic acid show the anti-tumor potency from many previous investigations, but the research for the inhibitory effect and mechanism on SMMC-7721 cells has not been regarded so far. MTT assay was used to evaluate the anti-proliferation effect of trihydroxybenzoic acid on SMMC-7721 cells and human PBMC. ROS production, apoptotic cells and the mitochondrial membrane potential were detected by flow cytometry. The activities of Caspase-3,9 were measured by colorimetric method. The results show that trihydroxybenzoic acid significantly inhibit the proliferation of SMMC-7721 cells in dose and time-dependent pathways. Compared with control group, trihydroxybenzoic acid caused the increase of ROS levels and a concomitant dissipation of the mitochondrial membrane potential, activities caspase-9 and caspase-3, triggering apoptosis of SMMC-7721 cells. Mitochondrial-dependent pathways could involved in trihydroxybenzoic acid induced SMM-7721 cells apoptosis.

Key words: Trihydroxybenzoic acid, Human hepatocarcinoma SMMC-7721 cells, Apoptosis, Mitochondrial membrane potential

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