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表没食子儿茶素没食子酸酯对人成淋巴细胞株hmlh1和hmsh2mrna表达的影响

Keywords: 表没食子儿茶素没食子酸酯,人成淋巴细胞株,错配修复基因,基因表达

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Abstract:

?目的:探讨表没食子儿茶素没食子酸酯[(-)epigallocatechingallate,egcg]对人成淋巴细胞株错配修复基因hmlh1和hmsh2mrna表达水平的影响。方法:将正常人成淋巴细胞株gm12593和乳腺癌患者成淋巴细胞株gm13705分别置于含有0、5、10、20μmol/legcg的rpmi-1640中进行6d干预培养后,采用实时荧光定量pcr(fq-pcr)技术检测干预前后错配修复基因hmlh1和hmsh2mrna表达水平的变化。结果:经20μmol/legcg干预培养6d后,gm12593细胞hmlh1与hmsh2mrna表达水平均显著高于其他浓度组(p均<0.05),且显著高于同等浓度时gm13705细胞中上述2个基因的表达水平(p<0.05);egcg对gm13705目标基因的表达无显著影响(p>0.05)。结论:egcg具有上调正常人成淋巴细胞株hmlh1与hmsh2mrna表达水平的潜力,可能通过增加错配修复起始复合物的数量,来帮助错配修复机制的启动,维护基因组的稳定性。

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