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ID:32232182
大小:1.83 MB
页数:38页
时间:2019-02-01
《pd98059对胃癌细胞sgc7901增殖、凋亡和mmp2、mmp9表达的影响》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、PD98059对胃癌细胞SGC.7901增殖凋亡的影响和MMP2/9表达的影响中文摘要目的:研究PD98059对人胃癌细胞SGC.7901细胞系增殖凋亡的影响和MMP2/9表达的影响,并进一步探讨其作用的可能机制。方法:应用细胞培养技术培养人胃癌细胞SGC.7901,以MTT法检测PD98059对细胞的杀伤抑制作用;免疫组化法检测胃癌细胞内p-ERK蛋白的表达情况;流式细胞仪检测胃癌细胞凋亡的变化情况;RT-PCR法检测胃癌细胞内MMP.2、MMP.9表达变化情况。结果:PD98059可抑制SGC.7901细胞的生长增殖,呈剂量.时间双效应关系;免疫组化显示,经PD98059
2、处理过的SGC.7901细胞中的p-ERK蛋白表达下降;流式细胞仪显示,SGC.7901细胞的凋亡率随着药物浓度增加而增高(AnrrixinV法);经PD98059处理后胃癌细胞内MMP2/9的表达量下降。结论:PD98059可抑制人胃癌SGC.7901细胞的生长增殖,诱导其凋亡;MAPK.ERK信号通路参与调控SGC.7901细胞中MMP2/9的表达,通过抑制该信号通路的活化,能够明显抑制MMP9的表达,而对MMP2表达抑制不明显。关键词:PD98059胃癌细胞细胞增殖M御2/9AbstractObjective:ToinvestigatetherolesoftheMAPK
3、—ERKsiganalinproliferationandMMP一2、lVIMP一9expressonofgastriccarcinomacellSGC一7901,thespecificMEKinhibitorPD98059wastakentothecells,inhibitingtheactivationof‘theMAPK—ERKsignal.Methods:TheSGC.7901cellswereincubatedwithdifferentconcentrations(0,5,10,20,40umseparately)ofPD98059fordifferenttimes
4、(12,24,48,72hoursseparatedly);MTTwastakentotesttheproliferatin;Immunocytochemistorywastakentotesttheexpressionofp-ERK;Semi—quantityRT-PCRwastakentotesttheexpressionsofmRNAoflVIMP一2andMMP一9.Thecellapoptosiswasmeasuredbyflowc夕metoryusinganexinV/PI.Results:whenSGC一7901cellsweretreatedwithPD980
5、59:1.Thecellproliferationwasinhibited(P<0.05),andwithintheexperimentspan,theeffectofproliferationinhibitionwasincreasdwiththeconcentrations(P<0.05)ofPD98059andinterferingtimes(P<0.05):2.p—ERKexpressionwassuppressed:3.Thecellapoptosispercentagewasincreasedobviously.44.TheexpressionofmRNAofMM
6、P一9wasdecreased(p=O.000),andmeanwhiletheexpressionofmRNAofMMP——2wasnotobviouslyinterfered(p=O.118):Conclusions:1.TheactivationofMAPK—ERKsignalisinhibitedaftertheSGC一790lcellsaretreatedwithPD98059:2.PD98059caninhibittheproliferationandpromoteapoptosiS.3.MAPK—ERKsignaltakespartinmodulatingthe
7、MMP一9expressionofSGC一7901cells,andtheexpressioncanbeinhibitedbysuppressiontheactivationofthesignal.Keywords:StomachNeoplasms:CellPr01iferation:MatrixMetalloteinase2:MatrixMetalloteinase9:PD980595缩略词表ERKextracellularsignalregulatedproteinkinase细胞外信号调节激酶bp
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