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时间:2020-06-04
《微小RNA-21在顺铂联合5-氟尿嘧啶抑制肺癌细胞株作用中的表达变化.pdf》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、实用老年医学2014年2月第28卷第2期PractGeriatr,Feb.2014,Vo1.28,No.2121微小RNA一21在顺铂联合5一氟尿嘧啶抑制肺癌细胞株作用中的表达变化肖霞李树春吴建中马蓉曹海霞冯继锋【摘要】目的探讨顺铂和5一氟尿嘧啶在体外联合用药对肺癌细胞株A549细胞存活率、细胞周期的影响以及在这过程中微小RNA一21(microRNA一21,miR一21)表达水平的变化。方法顺铂和5一氟尿嘧啶单药或联合用药处理肺癌A549细胞后,采用CCK.8法检测细胞存活率;倒置显微镜观察细胞形态变化;流式细胞仪技术检测细胞周期;实
2、时荧光定量PCR检测miR.21的表达变化。结果顺铂和5一氟尿嘧啶单药对A549细胞的抑制作用都具有浓度依赖性,两者联合用药48h后细胞的存活率明显低于单药组(P<0.05),并且细胞形态改变更加明显,悬浮、变圆的细胞也更多;顺铂处理A549细胞后,将细胞阻滞于S期和G:期,5一氟尿嘧啶阻滞A549细胞于S期,联合用药后细胞阻滞于s期和G,期;随着顺铂和5一氟尿嘧啶作用浓度的增加,miR一21的表达水平上调,联合用药后miR.21的表达亦上调,但趋势没有顺铂组明显(P3、有协同作用,同时可以上调细胞内miR一21表达水平。【关键词】顺铂;5-氟尿嘧啶;微小RNA一21;非小细胞肺癌;A549细胞[中图分类号]R734.2[文献标识码]Adoi:10.3969/j.issn.1003—9198.2014.02.009DiferentialexpressionofmiR-21inthesuppressionofA549cellswithcisplatinand5-fluorouracilX1AOXia.Jian—zhong,MARong,CAOHai—xia,FENGJi-feng.NanjingMedic4、alUniversityAffiliatedCancerHospital,Nanjiag210009,China;LIShu—chun.NanjingUniversityofTechnology,Nanjing210009,China【Abstract】ObjectiveToinvestigatetheeffectofcisplatinincombinationwith5-fluorouracilinvitroontheviabili—ty.cellcycleandmiR一21expressionlevelofA549cells.Met5、hodsTheinhibitoryeffectofcisplatin,5一fluorouracil,cis—platinincombinationwith5-fluorouracilontheviabilityofA549cellsweretestedbyCCK一8assayinvitro.Thechangeofcellmorphologywasobservedwithinve~edmicroscope,whilecellcyclewasassayedbyflowcytometry.TheexpressionofmiR一21wasmea6、suredbyreal-timequantitativePCR.ResultsThegrowthofA549cellswasinhibitedbycisplatininadose—dependentmanner,aswellas5-fluorouracil.Thesuppressionratioofthecombinedgrouptreatedwithcisplatincon—binedwith5-fluorouracilwashigherthanthatofthesingledruggroup(P<0.05);Thechangeofc7、ellmorphologyofcombi—nationgroupwasmoreapparentthanthatofthemonotherapygroup,andmoresuspensionandroundcellswereobserved.CisplatinarrestedA549cellcycleatSandG2phase.In5-fluorouracilgroup,cellswerearestedatSphase.Incombinationgroup,GlphasecellsdecreasedwhileS/G2phasecellsi8、ncreased.Withtheincreaseoftheconcentrationofcisplatinand5一flaorouracil,theexpressionlevelofmiR一21wasinc
3、有协同作用,同时可以上调细胞内miR一21表达水平。【关键词】顺铂;5-氟尿嘧啶;微小RNA一21;非小细胞肺癌;A549细胞[中图分类号]R734.2[文献标识码]Adoi:10.3969/j.issn.1003—9198.2014.02.009DiferentialexpressionofmiR-21inthesuppressionofA549cellswithcisplatinand5-fluorouracilX1AOXia.Jian—zhong,MARong,CAOHai—xia,FENGJi-feng.NanjingMedic
4、alUniversityAffiliatedCancerHospital,Nanjiag210009,China;LIShu—chun.NanjingUniversityofTechnology,Nanjing210009,China【Abstract】ObjectiveToinvestigatetheeffectofcisplatinincombinationwith5-fluorouracilinvitroontheviabili—ty.cellcycleandmiR一21expressionlevelofA549cells.Met
5、hodsTheinhibitoryeffectofcisplatin,5一fluorouracil,cis—platinincombinationwith5-fluorouracilontheviabilityofA549cellsweretestedbyCCK一8assayinvitro.Thechangeofcellmorphologywasobservedwithinve~edmicroscope,whilecellcyclewasassayedbyflowcytometry.TheexpressionofmiR一21wasmea
6、suredbyreal-timequantitativePCR.ResultsThegrowthofA549cellswasinhibitedbycisplatininadose—dependentmanner,aswellas5-fluorouracil.Thesuppressionratioofthecombinedgrouptreatedwithcisplatincon—binedwith5-fluorouracilwashigherthanthatofthesingledruggroup(P<0.05);Thechangeofc
7、ellmorphologyofcombi—nationgroupwasmoreapparentthanthatofthemonotherapygroup,andmoresuspensionandroundcellswereobserved.CisplatinarrestedA549cellcycleatSandG2phase.In5-fluorouracilgroup,cellswerearestedatSphase.Incombinationgroup,GlphasecellsdecreasedwhileS/G2phasecellsi
8、ncreased.Withtheincreaseoftheconcentrationofcisplatinand5一flaorouracil,theexpressionlevelofmiR一21wasinc
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