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
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。
References
[1] | bevilacquara,simpsonaj.methylationofthehmlh1promoterbutnohmlh1mutationsinsporadicgastriccarcinomaswithhigh-levelmicrosatelliteinstability[j].intjcancer,2000,87(2):200-203.
|
[2] | kámorye,kolacseko,ottós,etal.hmlh1andhmsh2somaticinactivationmechanismsinsporadiccolorectalcancerpatients[j].patholoncolres,2003,9(4):236-241.
|
[3] | fangm,chend,yangcs.dietarypolyphenolsmayaffectdnamethylation[j].jnutr,2007,137(1sup):223-228.
|
[4] | parkhk,handw,parkyh,etal.differentialbiologicalresponsesofgreenteapolyphenolinnormalcellsvs.cancercells[j].currentappliedphysics,2005,5(5):449-452.
|
[5] | livakkj,schmittgentd.analysisofrelativegeneexpressiondatausingreal-timequantitativepcrandthe2-△△ctmethod[j].methods,2001,25(4):402-408.
|
[6] | zhangh,zhangs,cuij,etal.expressionandpromotermethylationstatusofmismatchrepairgenehmlh1andhmsh2inepithelialovariancancer[j].austnzjobstetgynaecol,2008,48(5):505-509.
|
[7] | ahmadn,feyesdk,nieminenal,etal.greenteaconstituentepigallocatechin-3-gallateandinductionofapoptosisandcellcyclearrestinhumancarcinomacells[j].jnatlcancerinst,1997,89(24):881-1886.
|
[8] | ahmadn,guptas,mukhtarh.greenteapolyphenolepigallocatechin-3-gallatedifferentiallymodulatesnuclearfactorkappabincancercellsversusnormalcells[j].archbiochembiophy,2000,376(2):338-346.
|
[9] | guendeli,carpiol,pedatic,etal.methylationofthetumorsuppressorprotein,brca1,influencesitstranscriptionalcofactorfunction[j].plosone,2010,5(6):11379.
|
[10] | 王涛.brca1与dna损伤修复及转录调节[j].国外医学:免疫学分册,2004,27(4):202-206.
|
[11] | vagelid,daniilz,dahabrehj,etal.phenotypicmismatchrepairhmsh2andhmlh1geneexpressionprofilesinprimarynon-smallcelllungcarcinomas[j].lungcancer,2009,64(3):282-288.
|
[12] | 寸燕萍,倪娟,徐伟江,等.氧化型/还原型叶酸不足对人淋巴细胞hmsh2转录的影响[j].肿瘤防治研究杂志,2011,38(11):1320-1321.
|
Full-Text