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ID:51725645
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时间:2020-03-15
《Genistein对人卵巢癌细胞系3AO抑制增殖作用及机制探析.doc》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、Genistein对人卵巢癌细胞系3A0抑制增殖作用及机制探析作者:田爽辛晓燕黄艳红,高旭,张潍,袁鹏【关键词】料木黄酮;卵巢肿瘤;细胞系;细胞凋亡Inhibitoryeffectsofgenisteinonproliferationinhumanovariancarcinomacellline3A0andrelatedmechanism[Abstract]AIM:Toinvestigatetheeffectsofgenisteinonproliferationinhibitionandapoptosisinductioninhum
2、anovariancarcinomacellline3A0andtoexploreitsanticancermechanism・METHODS:Afterculturedwithdifferentdosesofgenisteinfordifferenttimeperiods,thecellsweretestedbyMTTassay.Studyontheultrastruetureof3A0cellswasperformedbytransmissionelectronmicroscope(TEM)aftertheadministrat
3、ionofgenistein・ApoptosiswasdetectedbymeansofterminaldeoxynucleotidyltransferasemediateddUTPbiotinnickendlabeling(TUNEL)method・Apoptosisrateandcellcycledistributionof3A0cellsweremeasuredbyflowcytometry(FCM).TheexpressionofestrogenreceptorBproteinwasmeasuredbyimmunocytoc
4、hemicaltechnique・RESULTS:After3A0cellsweretreatedwithdifferentconcentrationsofgenistein,doseandtimedependentgrowthinhibitionwasdemonstrated・Inhibitionpercentageincellsexposedto10mg/Land20mg/Lgenisteinfor72hwere,respectively,54.24%and65.99%・Also,genisteincouldblock3A0ce
5、llsintheG2/Mphaseofcellcycle,andatypicalsubdiploidapoptosispeakwasdemonstratedbeforeG1/G2phase・Moreovertheapoptosiswastimedependent.Thecharacteristicmorphologicalchangesofapoptosisingenisteintreated3A0cellswereobservedbyTEM.TUNELstainingrevealedapoptosispositivecells・G
6、enisteincouldupregulatetheexpressionofERB・CONCLUSION:Genisteincandoseandtimedependentlyinhibitgrowthandinduceapoptosisinovariancarcinomacellline3A0thepotentialpathwayofERB・[Keywords]genistein;ovarianneoplasms;cellline;apoptosis【摘要】目的:研究植物雌激素染料木黄酮对人卵巢癌细胞系3A0细胞增殖的抑制作用和凋亡
7、的诱导作用,探讨其抗癌作用的机制.方法:应用MTT法检测不同浓度染料木黄酮对3A0细胞的生长抑制作用,电镜观察药物作用后细胞的超微结构改变,TUNEL法确定凋亡,流式细胞仪检测细胞周期、定量分析凋亡,免疫细胞化学技术检测雌激素B受体的表达.结果:3A0细胞经不同浓度染料木黄酮处理后,细胞生长明显受到抑制,且这种抑制作用随时间延长及浓度增高而增强,10mg/L和20mg/L染料木黄酮作用72h后,抑制率分别达到54.24%和65.99%.染料木黄酮阻断3A0细胞生长于G2/M期,在G0/G1前出现典型亚二倍体凋亡峰,且凋亡呈时间依赖性
8、.电镜观察到用药后凋亡细胞典型的形态学特征.TUNEL法观察到大量阳性凋亡细胞.免疫细胞化学法检测到用药后,ERB表达明显加强.结论:染料木黄酮对3A0细胞的生长有明显的呈时间及浓度依赖性的抑制作用,并诱导其发生凋亡.染料木黄酮可能通
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