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ID:33165841
大小:1.91 MB
页数:34页
时间:2019-02-21
《pegfpn1-dnegfr对胃癌细胞的化疗增敏作用及其机制的实验研究》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、重庆医科大学硕士学位论文pEGFPN1--dnEGFR对胃癌细胞的化疗增敏作用及其机制的实验研究姓名:杨宁波申请学位级别:硕士专业:外科学指导教师:王子卫201205重庆医科大学硕士研究生学位论文pEGFPNl-dnEGFR对胃癌细胞的化疗增敏作用摘要目的:研究人EGFR显性负性突变体真核表达载体(pEGFPNl-dnEGFR)对人胃癌细胞株SGC.790l和NCI.N87化疗敏感性的影响,并探讨其可能机制。方法:MTT法测定奥沙利铂对稳定转染pEGFPNl.dIlEGFR和pEGFP-N1载体的两种胃癌细胞的量效反应。奥沙利铂作用各组
2、细胞24h后,RT-PCR检测各组细胞中Caspase.3和CyclinDl的mRNA表达情况;W-estemblot检测各组细胞中Caspase-3和CyclinDl蛋白表达情况。结果:转染pEGFPNl一dnEGFR后,两种胃癌细胞对奥沙利铂的敏感性增加,奥沙利铂对pEGFPNl.d血GFR转染组细胞的增殖抑制率与对照组相比有显著提高(P3、显示pEGFPNl.(岫GFR转染组细胞CyclinD1蛋白表达较对照组下降,而Caspase.3蛋白表达较对照组升高(火O.05)。结论:EGFR显性负性突变体能提高胃癌细胞对化疗药物奥沙利铂的敏感性,其机制可能与Caspase一3和CyclmD1有关。关键词:胃癌;pEGFPNl-d11EGFR;奥沙利铂;Caspase.3;Cycl逾D1;化疗敏感性’EFFECTSoFPEGFPNl.DNEGFRoNCHEMoSENSITⅣITYTooXALIPLA『TINoFGASTRICCARCINoMACELLSABSTRACTObject4、iVes:Tbi11VestigatemeefrectsofpEGFPNl.dr匹GFRonChemosensitiVityofhumangastriccarcinomacelllillesSGC.7901andNCI-N87tooxaliplatill,andtoelucidateⅡlepotentialmechanism.M:ethods:OxaliplatiIlindi毹rentconcen仃ationswereaddedtoeach铲oup,medose—e能ctresponsewasexamiIledbyMTTassay.,n5、le耐ⅢAexpressionofCaspase-3andCyclmD1weredetectedbyreversetranscriptionPCR(ImPCR)ineach目.oupat24haRerincubatedwithoxaliplaCill.ProteinexpressionofCaspase-3andCyclinD1weredetectedbyW.estemblot.Results:pEGFPN1-dI也GFRcouldiIlcreasethesensitivitytooxaliplatiIliIlboth船ohumanga6、s仃iccarciIlomaceUlilles.ThevalueofinhibitionfVI)ofoxaliplatiningroupsaddedwithpEGFPN1.(1nEGFRandoxaliplatinweresignificantlyhigherthanthosei11othergroups俨≮O.05).Rrr-PCRresultsshowedthatm王斟AexpressionofCyclillD1wasdecreasedi11cellstranfectedwithpEGFPNl-dnEGFR(尸7、ntrast,Caspase_3mRNAwasincreasedi11cells协cubatedwithoxaliplatillfor24h.3重庆医科大学硕士研究生学位论文W.estemblotresultsshowedthattranfectionwimpEGFPNl-dnEGFR1eadtoadecreaseofCyclinD1proteiIlexpression,andanincreaseofCaspase一3proteillexpressionaRer48hi11cubatedwithoxaliplatin(P8、onclusion:pEGFPN1-dnEGFRcanenhancethechemosensitivitytooxaliplatin证hlImangastriccarcillomacells,whichma
3、显示pEGFPNl.(岫GFR转染组细胞CyclinD1蛋白表达较对照组下降,而Caspase.3蛋白表达较对照组升高(火O.05)。结论:EGFR显性负性突变体能提高胃癌细胞对化疗药物奥沙利铂的敏感性,其机制可能与Caspase一3和CyclmD1有关。关键词:胃癌;pEGFPNl-d11EGFR;奥沙利铂;Caspase.3;Cycl逾D1;化疗敏感性’EFFECTSoFPEGFPNl.DNEGFRoNCHEMoSENSITⅣITYTooXALIPLA『TINoFGASTRICCARCINoMACELLSABSTRACTObject
4、iVes:Tbi11VestigatemeefrectsofpEGFPNl.dr匹GFRonChemosensitiVityofhumangastriccarcinomacelllillesSGC.7901andNCI-N87tooxaliplatill,andtoelucidateⅡlepotentialmechanism.M:ethods:OxaliplatiIlindi毹rentconcen仃ationswereaddedtoeach铲oup,medose—e能ctresponsewasexamiIledbyMTTassay.,n
5、le耐ⅢAexpressionofCaspase-3andCyclmD1weredetectedbyreversetranscriptionPCR(ImPCR)ineach目.oupat24haRerincubatedwithoxaliplaCill.ProteinexpressionofCaspase-3andCyclinD1weredetectedbyW.estemblot.Results:pEGFPN1-dI也GFRcouldiIlcreasethesensitivitytooxaliplatiIliIlboth船ohumanga
6、s仃iccarciIlomaceUlilles.ThevalueofinhibitionfVI)ofoxaliplatiningroupsaddedwithpEGFPN1.(1nEGFRandoxaliplatinweresignificantlyhigherthanthosei11othergroups俨≮O.05).Rrr-PCRresultsshowedthatm王斟AexpressionofCyclillD1wasdecreasedi11cellstranfectedwithpEGFPNl-dnEGFR(尸7、ntrast,Caspase_3mRNAwasincreasedi11cells协cubatedwithoxaliplatillfor24h.3重庆医科大学硕士研究生学位论文W.estemblotresultsshowedthattranfectionwimpEGFPNl-dnEGFR1eadtoadecreaseofCyclinD1proteiIlexpression,andanincreaseofCaspase一3proteillexpressionaRer48hi11cubatedwithoxaliplatin(P8、onclusion:pEGFPN1-dnEGFRcanenhancethechemosensitivitytooxaliplatin证hlImangastriccarcillomacells,whichma
7、ntrast,Caspase_3mRNAwasincreasedi11cells协cubatedwithoxaliplatillfor24h.3重庆医科大学硕士研究生学位论文W.estemblotresultsshowedthattranfectionwimpEGFPNl-dnEGFR1eadtoadecreaseofCyclinD1proteiIlexpression,andanincreaseofCaspase一3proteillexpressionaRer48hi11cubatedwithoxaliplatin(P8、onclusion:pEGFPN1-dnEGFRcanenhancethechemosensitivitytooxaliplatin证hlImangastriccarcillomacells,whichma
8、onclusion:pEGFPN1-dnEGFRcanenhancethechemosensitivitytooxaliplatin证hlImangastriccarcillomacells,whichma
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