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大小:921.04 KB
页数:5页
时间:2019-05-24
《Notch1通路活化抑制EC109细胞的增殖及机制探讨》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、中国癌症杂志2o09年第19卷第8期CHINA0NC0L0GY2009Vo1.19No.8597Notch1通路活化抑制EC1O9细胞的增殖及机制探讨[摘要]背景与目的:Notch1的活化可以通过下调人类乳头状瘤病毒(humanpap订1omavirus,HPV)早期蛋白E口E7基因的表达抑制HPV阳性HeLa细胞系的增殖。人食管鳞状细胞癌细胞系EClog细胞为HPV18阳性细胞。本研究将Notch1胞内段(intrace11u1ardomainofNotch,ICN)转入EC1Og细胞,导致EC1og细胞中Notc
2、h通路的组成性活化,从而探讨Notch通路活化与Ec109细胞增殖的关系及机制。方法:用脂质体转染法将ICN转入体外培养的Ec1O9细胞,用MTT法检测细胞增殖率;用流式细胞仪检测细胞周期;用RT—PcR检测HPV18E7基因的表达;用western印迹法检测周期蛋白激酶抑制因子p53的表达。结果:IcN转染入Ec1O9细胞后,Ec109细胞增殖受抑;细胞周期阻滞在G/M期,转目的基因组G。/M期细胞所占比例[(42.57±1.57)%]与未转染组[(1.88±O.66)%]及转空质粒组[(1.99±1.O2)%]相
3、比差异均有显著性(P<0.01)。67基因表达降低;p53表达升高,转IcN组(2.15±0.23)与未转染组(O.45±O.O7)及转空质粒组(0.46±O.O2)相比差异均有显著性(P4、(2o09)O8—0597—05ActjvatedNotch1signaljnginhjbitsgrowthofEC1O9celllineanditsmechanismZJ力一1i。zHANGKe—jie.MINXiang—hui.LUQuan—yi.LIUwen—li(DepartmentofEmergencyandHematology。zhongShanHoSpita1.XiamenUniversity。FujianMedica1UniversityC1inicTeachingHoSpita1.XiamenFuj5、ian361oo4,China)C0rreSpondencet0:ZHANGKe—jieE—mail:zhangkejieo378氇sina.com[Abstract]Backgr0undandpurp0se:IthasbeenreponedthatactiVationofNotch1couldstrong1yinhibitpro1iferationofHPV(humanpapillomavirus)一positiVeHeLacel1sbydown—regulatjonofmeand7genes.Theaimofth6、isp印erwastoinvestigatetheroleoftheNOtchsignalingpathwayingr0wtharrestofEC109cel1sV移andthemolecularmechanism.Meth0ds:EC109cel11inesawel1dia'eremiatedhumanESCC(esophagea1squamousceUcarcinoma)ceUlinewithHPV18-positive,wasusedinthestudy.Exogenousimracellu1ardomaino7、fNotch1(ICN)wastransfectedimocu1turedEC1O9cellsbvlipofectaminetransfection,mepro1iferationofthetransfectedcel1swasmeasuredbyanMTTassaCellcyc1edis仃ibutionwasanalyzedbyflowcytometry.Humanpapil1omaVimstype18(HPVl8)E7mRNAexpressionwasdetectedby王uPCR,andp53proteinex8、pressionwasdetectedbywestemb1ot.Results:Activation0fNotch1signa1ingresultedininhibitionofEC109cellproliferationwiththeinductionofG2/Marrest.Therewasasigni矗cantdiflferenceint
4、(2o09)O8—0597—05ActjvatedNotch1signaljnginhjbitsgrowthofEC1O9celllineanditsmechanismZJ力一1i。zHANGKe—jie.MINXiang—hui.LUQuan—yi.LIUwen—li(DepartmentofEmergencyandHematology。zhongShanHoSpita1.XiamenUniversity。FujianMedica1UniversityC1inicTeachingHoSpita1.XiamenFuj
5、ian361oo4,China)C0rreSpondencet0:ZHANGKe—jieE—mail:zhangkejieo378氇sina.com[Abstract]Backgr0undandpurp0se:IthasbeenreponedthatactiVationofNotch1couldstrong1yinhibitpro1iferationofHPV(humanpapillomavirus)一positiVeHeLacel1sbydown—regulatjonofmeand7genes.Theaimofth
6、isp印erwastoinvestigatetheroleoftheNOtchsignalingpathwayingr0wtharrestofEC109cel1sV移andthemolecularmechanism.Meth0ds:EC109cel11inesawel1dia'eremiatedhumanESCC(esophagea1squamousceUcarcinoma)ceUlinewithHPV18-positive,wasusedinthestudy.Exogenousimracellu1ardomaino
7、fNotch1(ICN)wastransfectedimocu1turedEC1O9cellsbvlipofectaminetransfection,mepro1iferationofthetransfectedcel1swasmeasuredbyanMTTassaCellcyc1edis仃ibutionwasanalyzedbyflowcytometry.Humanpapil1omaVimstype18(HPVl8)E7mRNAexpressionwasdetectedby王uPCR,andp53proteinex
8、pressionwasdetectedbywestemb1ot.Results:Activation0fNotch1signa1ingresultedininhibitionofEC109cellproliferationwiththeinductionofG2/Marrest.Therewasasigni矗cantdiflferenceint
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