欢迎来到天天文库
浏览记录
ID:33425746
大小:3.58 MB
页数:38页
时间:2019-02-25
《人胃癌多药耐药细胞株sgc7901adm的建立及三氧化二砷对其逆转耐药作用》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、摘要目的:体外建立人胃癌细胞多药耐药模型(SGC7901/ADM),研究多药耐药机制及三氧化二砷(arsenictrioxide,As203)对其逆转耐药作用。方法:采用阿霉素(Adriamycin,ADM)浓度梯度递增法诱导建立人胃癌多药耐药细胞株SGC7901/ADM。显微镜下观察细胞形态;MTT法检测亲本细胞株SGC7901/S及耐药细胞株SGC7901/ADM分别对ADM、长春新碱(vincristine,VCR)、紫杉醇(taxol,TAx)的敏感性,计算所获得耐药细胞株耐药倍数,并检测As203对
2、其逆转耐药倍数;免疫细胞化学法(PV法)检测细胞中P.gP、Caspase3蛋白表达情况;流式细胞仪检测细胞凋亡率。结果:胃癌细胞株SGC7901/ADM对ADM、VCR和TAX均产生耐药,耐药倍数分别是7.49、7.56及5.33倍。经O.5mmol/L浓度的As203作用48h后耐药倍数明显下降,分别为O.77、1.29、1.4(P3、,上调Caspase3的表达,并诱导SGC7901/ADM细胞凋亡(P<0.01),作用随浓度的增加而增大。结论:阿霉素诱导的SGC7901/ADM细胞具有多药耐药性,其耐药性与MDRl相关耐药蛋白P—gP有关,As203可通过调节细胞内耐药蛋白与凋亡蛋白逆转其耐药,并呈剂量依赖性。硕士研究生齐青(/140瘤学)指导老师赵园园副教授关键词:胃癌;多药耐药;三氧化二砷;Casepase3AbstractObjective:Toestablishthemultidrug—resistantcellmodelsof4、gastriccancercelllineSGC7901/ADMinvitro,detectingitsbiologicalcharacteristics,observatingitsmulti—drugresistancemechanisms,studytheMDRreversingeffecttreatedwitharsenictrioxide(As203).Methods:Multidrug—resistancehumangastriccarcinomacellline(SGC7901/ADM)wase5、stablishedinvitrobygraduallyincreasedthedensityofadriamycin(ADM).TheeffectofAs203onSGC79016、叁DMwastreated、MTTassaywasusedtodeterminethesensitivityofmultidrug—resistantcelltoanticarcinogens,Immunocytochemistry(PV—method)wasusedtodetecttheexpressionsofP—gP,Cas7、pase3,andflowcytometry(FCM)wasappliedtocheckapoptosisrateintumorcells.Results:TheresistanceofSGC7901/ADMcellstoADM、VCRandTAXwere7.49、7.56and5.33times,respectively.After48hpreconditionwith0.05mmol/LAs203,resistanceindex(RI)ofSGC7901/ADMdecreasedsignificantly8、CP<0.05).ReversingeffectofP—gPandCaspase3expressionswerefoundinSGC7901/ADMcelllinewhentreatedwithAs203,andcellapoptosiswereinduced,augmentedwiththeincreasingconcentrationofAs203(P<0.01).Conclusions:SGC7901,ADMcouldbeestablishedfromSGC7901/Scelllinesbygradua9、llyincreasedthedensityofadriamycin(ADM).Multi—drugresistancemechanismsofSGC7901/ADMisrelatedtoMDRlprotein.as203canreversedrugresistanceofSGC7901/ADMcellsbythewayofdose.dependent.Postgraduatestudent:QiQ
3、,上调Caspase3的表达,并诱导SGC7901/ADM细胞凋亡(P<0.01),作用随浓度的增加而增大。结论:阿霉素诱导的SGC7901/ADM细胞具有多药耐药性,其耐药性与MDRl相关耐药蛋白P—gP有关,As203可通过调节细胞内耐药蛋白与凋亡蛋白逆转其耐药,并呈剂量依赖性。硕士研究生齐青(/140瘤学)指导老师赵园园副教授关键词:胃癌;多药耐药;三氧化二砷;Casepase3AbstractObjective:Toestablishthemultidrug—resistantcellmodelsof
4、gastriccancercelllineSGC7901/ADMinvitro,detectingitsbiologicalcharacteristics,observatingitsmulti—drugresistancemechanisms,studytheMDRreversingeffecttreatedwitharsenictrioxide(As203).Methods:Multidrug—resistancehumangastriccarcinomacellline(SGC7901/ADM)wase
5、stablishedinvitrobygraduallyincreasedthedensityofadriamycin(ADM).TheeffectofAs203onSGC7901
6、叁DMwastreated、MTTassaywasusedtodeterminethesensitivityofmultidrug—resistantcelltoanticarcinogens,Immunocytochemistry(PV—method)wasusedtodetecttheexpressionsofP—gP,Cas
7、pase3,andflowcytometry(FCM)wasappliedtocheckapoptosisrateintumorcells.Results:TheresistanceofSGC7901/ADMcellstoADM、VCRandTAXwere7.49、7.56and5.33times,respectively.After48hpreconditionwith0.05mmol/LAs203,resistanceindex(RI)ofSGC7901/ADMdecreasedsignificantly
8、CP<0.05).ReversingeffectofP—gPandCaspase3expressionswerefoundinSGC7901/ADMcelllinewhentreatedwithAs203,andcellapoptosiswereinduced,augmentedwiththeincreasingconcentrationofAs203(P<0.01).Conclusions:SGC7901,ADMcouldbeestablishedfromSGC7901/Scelllinesbygradua
9、llyincreasedthedensityofadriamycin(ADM).Multi—drugresistancemechanismsofSGC7901/ADMisrelatedtoMDRlprotein.as203canreversedrugresistanceofSGC7901/ADMcellsbythewayofdose.dependent.Postgraduatestudent:QiQ
此文档下载收益归作者所有