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时间:2020-05-04
《姜黄素对人肝母细胞瘤细胞株HepG2内β-连环蛋白信号通路的影响-论文.pdf》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、中华小儿外科杂志2014年7月第35卷第7期ChinJPediatrSurg,July2014,Vo1.35,No.7535·实验研究·姜黄素对人肝母细胞瘤细胞株HepG2内』3一连环蛋白信号通路的影响李勇肖雅玲陈朝晖黎明李青玲邹欣周海燕【摘要】目的观察姜黄素对体外培养HepG2中连环蛋白q3-catenin)信号通路的影响,探讨姜黄素抑制肝母细胞瘤的分子机制。方法实时定量聚合酶链反应(RT—PCR)及免疫印迹法(WesternBlot)检测对照组及不同浓度姜黄素干预组(10、20、30、40、50/~mol
2、/L)HepG2中~-cateninmRNA及蛋白表达水平;TOPflash/FOPflash双荧光素酶报告系统检测~-catenin的转录活性;RT-PCR检测各组catenin靶基因细胞周期素D1(cyclinD1)、血管内皮细胞生长因子(VEGF)及基质金属蛋白酶9(MMPg)mRNA表达水平。结果HepG2高表达~-cateninmRNA及蛋白,各浓度姜黄素干预均能抑制HepG2细胞cateninmRNA表达(P<0.05或P%0.01),10~50tzmol/L姜黄素干预分别降低了~-catenin
3、mRNA表达水平20、4O、48、58和60;20~50/~mol/L姜黄素干预均能抑制cyclinD1、VEGF及MMP9mRNA的表达(P<0.05或P<0.()1);20~50t,mol/L姜黄素干预均能抑制HepG2细胞catenin蛋白表达(P4、enin信号通路相关下游靶基因的表达,这可能是其发挥抗肿瘤效应的分子机制之一。【关键词】肝肿瘤;姜黄素;l}连环蛋白;细胞周期素D1EffectsofcurcuminoncateninsignalingpathwaysinhumanhepatoblastomacelllineHepG2LiYong,XiaoYaling,ChenZhaohui,LiMing,LiQingling,ZouXin,ZhouHaiyan.DepartmentofGeneral,Surgery,theChildren'sHospita5、lofH“nanProvince,(angsha410007,ChinaCorrespondingauthor:ZhouHaiyan,Email:yanhaizhou78@163.com[Abstract]ObjectiveToexploretheeffectsofcurcumin(cur)oncateninsignalingpathwaysinHepG2andelucidateitsanti—tumormolecularmechanism.MethodsTheexpressionsofmRNAandprot6、einofcateninincontro1HepG2andcurcumintreatmentgroupsofdifferentconcentrations(10,2O,30,40,50~mol/L)wereevaluatedbyreversetranscription-polymerasechainreaction(RT-PCR)andWesternblot.AndthetranscriptionalactivityofeateninwasassayedbyT0Pflash/FOPflashdual_luci7、ferasereportersystem.TheexpressionsofeatenintargetedgenecyclinD1,VEGFandMMP9wereevaluatedbyRT-PCR.ResultsJ}cateninwashighlyexpressedinHepG2.Curcumin(10—50/~mol/L)couldinhibitthemRNAexpressionofcateninbyapproximately20,40,48,58and60respectively.Meanwhilecurc8、umin(20—50umol/L)significantlyinhibitedthemRNAexpressionofB_catenintargetedgeneMMP9,eyclinD1andVEGF(P<0.05orP<0.【)1).Theexpressionofcateninattheproteinleveldecreasedbyapproximately30,43,60and75aftertre
4、enin信号通路相关下游靶基因的表达,这可能是其发挥抗肿瘤效应的分子机制之一。【关键词】肝肿瘤;姜黄素;l}连环蛋白;细胞周期素D1EffectsofcurcuminoncateninsignalingpathwaysinhumanhepatoblastomacelllineHepG2LiYong,XiaoYaling,ChenZhaohui,LiMing,LiQingling,ZouXin,ZhouHaiyan.DepartmentofGeneral,Surgery,theChildren'sHospita
5、lofH“nanProvince,(angsha410007,ChinaCorrespondingauthor:ZhouHaiyan,Email:yanhaizhou78@163.com[Abstract]ObjectiveToexploretheeffectsofcurcumin(cur)oncateninsignalingpathwaysinHepG2andelucidateitsanti—tumormolecularmechanism.MethodsTheexpressionsofmRNAandprot
6、einofcateninincontro1HepG2andcurcumintreatmentgroupsofdifferentconcentrations(10,2O,30,40,50~mol/L)wereevaluatedbyreversetranscription-polymerasechainreaction(RT-PCR)andWesternblot.AndthetranscriptionalactivityofeateninwasassayedbyT0Pflash/FOPflashdual_luci
7、ferasereportersystem.TheexpressionsofeatenintargetedgenecyclinD1,VEGFandMMP9wereevaluatedbyRT-PCR.ResultsJ}cateninwashighlyexpressedinHepG2.Curcumin(10—50/~mol/L)couldinhibitthemRNAexpressionofcateninbyapproximately20,40,48,58and60respectively.Meanwhilecurc
8、umin(20—50umol/L)significantlyinhibitedthemRNAexpressionofB_catenintargetedgeneMMP9,eyclinD1andVEGF(P<0.05orP<0.【)1).Theexpressionofcateninattheproteinleveldecreasedbyapproximately30,43,60and75aftertre
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