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维生素K3诱导人肝癌细胞SMMC-7721损伤中 Bcl-2和Bax表达的变化及意义

杨 闯1,张宏宇2,孔晓霞2,孙连坤2,郑 宇3,王广义1   

  1. 1.吉林大学第一医院普通外科,吉林 长春 130021;2.吉林大学基础医学院病理生理学教研室,吉林 长春 130021;3. 黑龙江省哈尔滨市第一医院普通外科,黑龙江 哈尔滨 150010
  • 收稿日期:2008-05-22 修回日期:1900-01-01 出版日期:2009-01-28 发布日期:2009-01-28
  • 通讯作者: 王广义

Changes of Bcl-2 and Bax on vitamin K3 induced injury in human hepatocarcinoma SMMC-7721 cells

YANG Chuang1,ZHANG Hong-yu2,KONG Xiao-xia2,SUN Lian-kun2,ZHENG Yu3,WANG Guang-yi1   

  1. 1.Department of General Surgery,First Hospital,Jilin University,Changchun 130021,China; 2.Department of Pathophysiology,School of Basic Medical Sciences,Jilin University, Changchun 130021,China;3.Department of General Surgery,First Hospital of Haerbin City,Haerbin 150010,China
  • Received:2008-05-22 Revised:1900-01-01 Online:2009-01-28 Published:2009-01-28
  • Contact: WANG Guang-yi

摘要: 目的:探讨Bcl-2、Bax在维生素K3 (VK3)诱导人肝癌细胞SMMC-7721损伤过程中的变化,为研究VK3诱导肝癌细胞损伤的机制提供参考。方法:体外培养SMMC-7721细胞,取对数生长期细胞分为对照组和不同浓度VK3处理的实验组(20、40和60 μmol•L-1),MTT法检测各组SMMC-7721细胞生存率;紫外分光光度法检测乳酸脱氢酶(LDH)释放率;RT-PCR检测Bcl-2及Bax mRNA表达水平;Western blotting检测Bcl-2及Bax蛋白表达水平。结果:与对照组比较,20 μmol•L-1 VK3组细胞存活率、LDH释放率、Bcl-2和Bax mRNA表达量及其蛋白表达量未见明显变化;与对照组比较,40和60 μmol•L-1 VK3组细胞存活率降低(P<0.05或P<0.01);LDH释放率增加(P<0.05或P<0.01);Bcl-2 mRNA表达率降低(P<0.05);Bax mRNA表达量率升高(P<0.05);Bcl-2蛋白表达水平下降(P<0.05);Bax 蛋白表达水平升高(P<0.05)。结论:40 μmol•L-1剂量的VK3能够诱导SMMC-7721细胞损伤,其机制可能与下调Bcl-2和上调Bax蛋白表达有关。

关键词: Bcl-2, Bax, SMMC-7721细胞, 细胞损伤

Abstract: Abstract:Objective To investigate the changes of Bcl-2 and Bax expressions on human hepatocarcinoma SMMC-7721 cells injuried with vitamin K3(VK3) treatment and provide information for further research of its mechanism.Methods SMMC-7721 cells were cultivated in vitro,then were divided into control group and experimental groups treated with different concentrations of VK3(20,40 and 60 μmol•L-1).The viability of SMMC-7721 cells treated with VK3 was measured by MTT assay,LDH release rate was detected by ultraviolet spectrophotometry,the expressions of Bcl-2 and Bax mRNA were determined using RT-PCR,the expressions of Bcl-2 and Bax protein were assayed by using Western Blotting.Results Compared with control group,20 μmol•L-1 VK3 did not induce significant changes of cell viability,LDH release rate,the expressions of Bcl-2 and Bax mRNA,the expressions of Bcl-2 and Bax protein. In 40 and 60 μmol•L-1VK3 groups the cell viabilities decreased (P<0.05 or P<0.01),the LDH release rates increased (P<0.05 or P<0.01),the expressions of Bcl-2 mRNA decresed (P<0.05),the expressions of Bax mRNA increased(P<0.05),the expressions of Bcl-2 protein decresed,the expression of Bax protein increased compared with control group.Conclusion 40 μmol•L-1VK3 can induce SMMC-7721 cell injury,its mechanism may be related to down-regulation of Bcl-2 protein expression and up-regulation of Bax protein expression.

Key words: Bcl-2 , Bax , SMMC-7721 cells , cell injury

中图分类号: 

  • R735.7