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时间:2020-04-21
《NF-κB抑制物对顺铂诱导宫颈癌SiHa细胞凋亡的影响-论文.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、四川大学学‘E-~-mJSichnanUniv(MedSciEdi)20。13一;44(1):。36—4liNF—KB抑制物对顺铂诱导宫颈癌SiHa细胞凋亡的影响*谢灵遐,胡丽娜,陈恒禧,彭雪,李金科△1.四川大学华西第二医院妇产科(成都610041);2.重庆医科大学附属第二医院妇产科(重庆400010)【摘要】目的了解核转录因子一B(NF-~B)抑制物[阿司匹林、舒林酸、姜黄和二硫氨基甲酸酞吡咯烷(PDTC)]对顺铂介导的SiHa细胞凋亡的影响。方法体外培养宫颈癌SiHa细胞株,用前述4种NF_KB抑制物预处理细胞后,加入顺铂继续培养24h,Western
2、blot检测NF-~BP65的激活情况;MTT检测细胞的相对存活率;采用原位缺口末端标记法(TUNEL)比较4种药物联合顺铂和单用顺铂处理24h细胞的凋亡;采用PI染色一流式细胞术检测细胞凋亡和细胞周期的改变。结果NF-xB抑制物预处理后,再加入顺铂刺激,Westernblot结果显示可抑制顺铂诱导的P65表达(P3、.05),而NF—xB抑制物预处理细胞则能抑制S期细胞的数量。结论NF_KB抑制物能增加SiHa细胞对顺铂化疗的敏感性,其机制可能是通过抑制小剂量顺铂对SiHa细胞NF-~B的激活,同时抑制小剂量顺铂对细胞DNA合成的诱导作用,进而增加顺铂诱导的细胞凋亡而达到的。【关键词】核转因子录一B官颈癌顺铂细胞凋亡化疗EffectsofNF-KBInhibitoronCisplatin-inducedApoptosisinCervicalCancerXIELing—xia,HULi—na。CHENHeng—xi,PENGXue,LIJin—ke.1.Department4、ofGynecologyandObstetrics,WestChinaSecondHospital,SichuanUniversity,Chengdu610041,China;2.DepartmentofGynecologyandObstetrics,theSecondAffiliatedHospitalofChongqingMedicalUniversity,Chongqing400010,China△Correspondingauthor,E-mail:Leon-ljk@263.net[Abstract]ObjectiveToobservewhetherc5、isplatin-inducedapoptosiswereincreasedwhenSiHacellswerepreincubatedwithnuclearfactor-kappaB(NF-xB)inhibitors[aspirin,sulindac,curcuminorpyrrolidinedithiocarbamate(PDTC)].MethodsSiHaceilswerepreincubated2hourswithaspirin,sulindac,curcuminandPDTCrespectively,thenafurtherincubationwere6、donewithcisplatin,andWesternblotanalysiswereappliedtodetectP65levelofnuclearextraction.MTTassaywasdonetodetectrelativecellviability.TUNELwasappliedtodetectapoptosisrates.FlowcytometryieswithPIstainingwerealsousedtodetectapoptosisaswellascellcycle.ResultsWhenSiHacellswerepretreatedwi7、thaspirin,sulindac,curcuminorPDTC,WesternblotshowedthattheexpressionofP65wasinhibiteduponcisplatinstimulus(P8、umin,orPDTC,TUNELan
3、.05),而NF—xB抑制物预处理细胞则能抑制S期细胞的数量。结论NF_KB抑制物能增加SiHa细胞对顺铂化疗的敏感性,其机制可能是通过抑制小剂量顺铂对SiHa细胞NF-~B的激活,同时抑制小剂量顺铂对细胞DNA合成的诱导作用,进而增加顺铂诱导的细胞凋亡而达到的。【关键词】核转因子录一B官颈癌顺铂细胞凋亡化疗EffectsofNF-KBInhibitoronCisplatin-inducedApoptosisinCervicalCancerXIELing—xia,HULi—na。CHENHeng—xi,PENGXue,LIJin—ke.1.Department
4、ofGynecologyandObstetrics,WestChinaSecondHospital,SichuanUniversity,Chengdu610041,China;2.DepartmentofGynecologyandObstetrics,theSecondAffiliatedHospitalofChongqingMedicalUniversity,Chongqing400010,China△Correspondingauthor,E-mail:Leon-ljk@263.net[Abstract]ObjectiveToobservewhetherc
5、isplatin-inducedapoptosiswereincreasedwhenSiHacellswerepreincubatedwithnuclearfactor-kappaB(NF-xB)inhibitors[aspirin,sulindac,curcuminorpyrrolidinedithiocarbamate(PDTC)].MethodsSiHaceilswerepreincubated2hourswithaspirin,sulindac,curcuminandPDTCrespectively,thenafurtherincubationwere
6、donewithcisplatin,andWesternblotanalysiswereappliedtodetectP65levelofnuclearextraction.MTTassaywasdonetodetectrelativecellviability.TUNELwasappliedtodetectapoptosisrates.FlowcytometryieswithPIstainingwerealsousedtodetectapoptosisaswellascellcycle.ResultsWhenSiHacellswerepretreatedwi
7、thaspirin,sulindac,curcuminorPDTC,WesternblotshowedthattheexpressionofP65wasinhibiteduponcisplatinstimulus(P8、umin,orPDTC,TUNELan
8、umin,orPDTC,TUNELan
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