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Vk3对宫颈癌Hela细胞mTOR信号转导蛋白基因表达的影响

刘玉和1,2,于春艳1,2, 王 皓*,孙连坤1   

  1. (1.吉林大学基础医学院病理生理学教研室,吉林 长春 130021;2.北华大学基础医学院病
  • 收稿日期:2008-10-16 修回日期:1900-01-01 出版日期:2009-03-28 发布日期:2009-08-14
  • 通讯作者: 孙连坤

Effect of Vk3 on gene expression of mTOR signaling pathway in cervical carcinoma Hela cells

LIU Yu-he1,2,YU Chun-yan1,2,WANG Hao*,SUN Lian-kun1   

  1. (1.Department of Pathphysiology,School of Basic Medical Sciences,Jilin University,Changchun 130021,China; 2.Department of Pathology,School of Basic Medical Sciences,Beihua University,Jinlin 132013,China)
  • Received:2008-10-16 Revised:1900-01-01 Online:2009-03-28 Published:2009-08-14
  • Contact: SUN Lian-kun

摘要: 目的:观察维生素K3(Vk3)对Hela细胞雷帕霉素靶蛋白(mTOR)及其底物p70S6激酶(p70S6K)α1、α2、β1、β2和细胞周期素D1(cyclin D1)mRNA表达的变化及N-乙酰半胱氨酸 (NAC)对mTOR及其底物的影响,探讨mTOR信号转导蛋白在人宫颈癌的发生、发展过程中的作用。方法:实验分为对照组(Con)、Vk3处理组(Vk3)、Vk3与NAC联合作用(Vk3+NAC)组及NAC单独应用组(NAC),MTT法检测各组Hela细胞存活率,逆转录聚合酶链反应(RT-PCR)方法检测各组Hela细胞中mTOR、p70S6K-α1、p70S6K-α2、p70S6K-β1、 p70S6K-β2及cyclin D1 mRNA表达。结果:与Con组比较,Vk3组Hela细胞存活率显著降低(P<0.01),mTOR、p70S6K-α1、p70S6K-α2、p70S6K-β1、p70S6K-β2及cyclin D1 mRNA表达量均明显下降(P<0.05);而与Vk3组比较,Vk3+NAC组Hela细胞存活率显著增加(P<0.01),上述指标mRNA表达量均明显增加(P<0.05)。结论:Vk3通过其氧化应激作用抑制Hela细胞的增殖,其机制与降低mTOR信号转导蛋白及cyclin D1的基因表达有关。

关键词: 核糖体蛋白质激酶类, 70-kDa, Hela细胞, 细胞周期蛋白D1

Abstract: Abstract:Objective To explore the role of mammalian target of rapamycin(mTOR) in the Hela cells injury induced by vitamin K(Vk3)through observation of mTOR,p70S6K-α1,p70S6K-α2,p70S6K-β1,p70S6K-β2 as well as cyclin D1 mRNA expression and the effects of N-acetyl cysteine(NAC) on mTOR,p70S6K-α1,p70S6K-α2,p70S6K-β1,p70S6K-β2 as well as cyclin D1 mRNA.Methods Hela cells were randomly divided into control group,Vk3 group,Vk3+NAC group and NAC group, respectively.The survival rate of Hela cells was determined by MTT.The mTOR,p70S6K-α1,p70S6K-α2,p70S6K-β1,p70S6K-β2 and cyclin D1 mRNA expressions in Hela cells were assayed by using RT-PCR.Results Compared with control group,the survival rate of Hela cells in Vk3 group was decreased(P<0.01),the expressions of mTOR,p70S6K-α1,p70S6K-α2,p70S6K-β1,p70S6K-β2 and cyclin D1 mRNA were decreased (P<0.05).Compared with Vk3 group,the survival rate in Vk3+NAC group was increased(P<0.01),and the mRNA expressions of those genes mentioned above were also increased(P<0.05).Conclusion Vk3 can inhibit Hela cell proliferation through oxidative stress,which might be correlated with down-regulation of the genes expressions of mTOR signal pathway and cyclin D1.

Key words: ribosomal protein S6 kinases, 70-kDa, Hela cells, cyclin D1

中图分类号: 

  • R363.2