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时间:2020-04-21
《PARP抑制剂对顺铂抑制肺癌细胞增殖影响的研究-论文.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、·1290·刘俊玲,等PARP抑制剂对顺铂抑制肺癌细胞增殖影响的研究《实验研究/论著lPARP抑制剂对顺铂抑制肺癌细胞增殖影响的研究刘俊玲孙蕊李万湖王宇蔡修宇姜文奇1.华南肿瘤学国家重点实验室中山大学附属肿瘤防治中心(内科:刘俊玲,王宇,蔡修宇,姜文奇;鼻咽科:孙蕊),广东广州5100602.山东省肿瘤防治研究院磁共振室,山东济南250117【摘要】目的:以顺铂(DDP)敏感和耐药肺癌细胞系为实验对象,探讨聚腺苷二磷酸核糖聚合酶[Poly(ADP—ribose)polymerase,PARP]抑制剂对DDP抑制肺癌细胞增殖作用的影响。方法
2、:MTT法检测DDP、PARP抑制剂单药及其两者联合对DDP敏感和耐药肺癌细胞系增殖的抑制作用。应用蛋白免疫印迹方法,检测肺癌细胞系中PARP-1和PARP一2的表达,以及DDP激活PARP生成聚腺苷二磷酸核糖(Poly(ADP—ribose),PAR]与PARP抑制剂对PARP的抑制作用。结果:蛋白质印迹法结果显示PARP1在PC9、PC14、SBC3亲代DDP敏感肺癌细胞系及其子代DDP耐药细胞系之间的表达差异有统计学意义,P值分别为0.028、0.013和0.008。DDP作用于肺癌细胞系激活PARP生成PAR在4Omin达到高峰,
3、但在60min即迅速降低,且DPQ可抑制PAR的生成。而MTT结果显示,DPQ联合DDP抑制肺癌敏感和耐药细胞系的抗增殖作用与DDP单药作用比较差异均无统计学意义(P>O.05,£4、EffectOfPARPinhibitorsontheproliferationinhibitionbycisplatininlungcancercelllinesLH,Jun—ling,SUNRui,LI—hu,WANGYu,CAIXiu—yu。JIANGWen—qi1.StateKeyLaboratoryofOncologyinSouthChina,CancerCenter,SunYat—senUniversity,Cnu~ngzhou510060,P.R.China2.DepartmentofMR,ShandongCancerHo55、pital,Jinan250117,P.R.China[-ABSTRACT~OBJECTIVE:Toobservetheeffectofpoly(ADP—ribose)polymerase(PARP)inhibitorsonthegrowthinhibitionbycisplatinintheCis—sensitiveandCis—resistantlungcancercelllines.METHODS:TheeffectofproliferationinhibitionofthecombinationofPARPinhibitorswi6、thcispaltinandthatofthesingledrugsweredetectedbyMTTassay.ThedifferenceofexpressionofPARP一1andPARP一2betweentheCis~sensitiveandCis—resistantcelllines.togetherwiththeformationofPoly(ADP-ribose)(PAR)followingtheexposureofcisplatinandtheinhibitionofPARbyPARPinhibi—torswereanal7、yzedbywesternblotanalysis.RESULTS:TheexpressionofPARP一1betweentheparentcisplatinsensitivecelllinesPC9,PC14,SBC3andtheirsubcisplatinresistantcelllineswassignificantlydifferent(P一0.028,0.013,0.008).Afterexposureof60minutestocisplatin。PARPwasactivatedrapidlyandtheformationof8、PARwasthehighestat40minutesandcouldbeinhibitedbyDPQinthelungcancercell1ines(P>0.05,£
4、EffectOfPARPinhibitorsontheproliferationinhibitionbycisplatininlungcancercelllinesLH,Jun—ling,SUNRui,LI—hu,WANGYu,CAIXiu—yu。JIANGWen—qi1.StateKeyLaboratoryofOncologyinSouthChina,CancerCenter,SunYat—senUniversity,Cnu~ngzhou510060,P.R.China2.DepartmentofMR,ShandongCancerHo5
5、pital,Jinan250117,P.R.China[-ABSTRACT~OBJECTIVE:Toobservetheeffectofpoly(ADP—ribose)polymerase(PARP)inhibitorsonthegrowthinhibitionbycisplatinintheCis—sensitiveandCis—resistantlungcancercelllines.METHODS:TheeffectofproliferationinhibitionofthecombinationofPARPinhibitorswi
6、thcispaltinandthatofthesingledrugsweredetectedbyMTTassay.ThedifferenceofexpressionofPARP一1andPARP一2betweentheCis~sensitiveandCis—resistantcelllines.togetherwiththeformationofPoly(ADP-ribose)(PAR)followingtheexposureofcisplatinandtheinhibitionofPARbyPARPinhibi—torswereanal
7、yzedbywesternblotanalysis.RESULTS:TheexpressionofPARP一1betweentheparentcisplatinsensitivecelllinesPC9,PC14,SBC3andtheirsubcisplatinresistantcelllineswassignificantlydifferent(P一0.028,0.013,0.008).Afterexposureof60minutestocisplatin。PARPwasactivatedrapidlyandtheformationof
8、PARwasthehighestat40minutesandcouldbeinhibitedbyDPQinthelungcancercell1ines(P>0.05,£
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