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时间:2020-04-17
《p15基因对人肝癌HepG2顺铂耐药细胞周期和耐药性的影响研究.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、p15基因对人肝癌HepG2顺铂耐药细胞周期和耐药性的影响研究朱振双,陈伟庆,房殿亮,张杨(重庆医科大学附属第二医院消化内科,重庆400010)中图分类号R734文献标志码A文章编号1001—0408(2012)41—3888—03DOI10.6039/j.issn.1001—0408.2012.41.18摘要目的:利用p15一shRNA表达栽体干扰细胞周期相关基因p15,探讨p15基因对人肝癌HepG2顺铂耐药细胞周期和耐药性的影响。方法:用梯度浓度的顺铂诱导HepG2细胞耐药并建立动态耐药模型HepG2/J,~.8fi/2.0,以不同浓度(30、60、90nmol·L_1)的干扰质粒p15
2、.shRNAY2和阴性对照质粒(shRNA.F)转染HepG2/顺铂/2.0细胞后48h检测p15荧光阳性细胞,筛选最佳干扰浓度;以筛选结果转染H印G2/顺铂/2.0细胞,与未转染细胞和阴性对照转染细胞比较,检测细胞存活情况、周期分布和p15、Bc1.2、Bax的蛋白表达。结果:最佳干扰浓度为6Onmol·L一;与未转染细胞和阴性对照转染细胞比较,p15.shRNAY2转染细胞的存活率明显增加,G。期细胞明显减少,p15、Bax蛋白表达明显降低,Bcl-2蛋白表达明显增加(P均3、对顺铂的耐药性。关键词细胞周期;p15基因;肝癌;顺铂耐药;shRNA干扰Efectsofp15GeneonCellCycleandDrugResistanceofHumanHepatomaCellLineHepG2ResistanttoCisplatinZHUZhen—shuang,CHENWei—qing,FANGDian—liang,ZHANGYang(Dept.ofDigestiveDiseases,TheSec—ondAfiliatedHospitalofChongqingMedicalUniversity,Chongqing400010,China)ABSTRACTOBJECTIV4、E:Tointerferingincellcyclerelatedgenep15byp15一shRNAexpressionvector,andtoinvestigatetheefectofp15geneoncellcycleanddrugresistanceofhumanhepatomacelllineHepG2resistanttocisplatin.METH0DS:Drugre-sistanceofHepG2cellwasinducedbydiferentconcentrationsofcisplatinanddynamicdrug.resistancemodelHepG2/cisplat5、in/2.0wasestablished.HeDG2/cisplatin/2.0celllinewastransfectedwimdiferentconcentrations(30,60,90nnlo卜L)ofinterferenceplasmid(pl5-shRNAY2)andnegativecontro1interferenceplasmid(shRNA-F),and48hlaterthefluorescencepositivecellsweredeterminedandtheoptimalinterferenceconcentrationwasscreened.HepG2/cisplat6、in/2.0celllinewastransfectedaccordingtothere-suitsofscreeningandcomparedwithnon.transfectedcellandnegativecontroltransfectedcel1.Thecellviability.cycledistributionandtheproteinexpressionsofp15.Bc1.2andBaxweredetermined.RBSUIS:Theoptimalinterferenceconcentrationswas6Onmo1.L一1.Comparedwithnon.transfec7、tedcellandnegativecontroltransfectedcel1.theviabilityoftransfectedcelltargetingp15-shRNAY2increasedsignificantlyandthenumberofitdecreasedsignificantlyatG1phase;proteinexpressionofp15andBaxdecreasedand
3、对顺铂的耐药性。关键词细胞周期;p15基因;肝癌;顺铂耐药;shRNA干扰Efectsofp15GeneonCellCycleandDrugResistanceofHumanHepatomaCellLineHepG2ResistanttoCisplatinZHUZhen—shuang,CHENWei—qing,FANGDian—liang,ZHANGYang(Dept.ofDigestiveDiseases,TheSec—ondAfiliatedHospitalofChongqingMedicalUniversity,Chongqing400010,China)ABSTRACTOBJECTIV
4、E:Tointerferingincellcyclerelatedgenep15byp15一shRNAexpressionvector,andtoinvestigatetheefectofp15geneoncellcycleanddrugresistanceofhumanhepatomacelllineHepG2resistanttocisplatin.METH0DS:Drugre-sistanceofHepG2cellwasinducedbydiferentconcentrationsofcisplatinanddynamicdrug.resistancemodelHepG2/cisplat
5、in/2.0wasestablished.HeDG2/cisplatin/2.0celllinewastransfectedwimdiferentconcentrations(30,60,90nnlo卜L)ofinterferenceplasmid(pl5-shRNAY2)andnegativecontro1interferenceplasmid(shRNA-F),and48hlaterthefluorescencepositivecellsweredeterminedandtheoptimalinterferenceconcentrationwasscreened.HepG2/cisplat
6、in/2.0celllinewastransfectedaccordingtothere-suitsofscreeningandcomparedwithnon.transfectedcellandnegativecontroltransfectedcel1.Thecellviability.cycledistributionandtheproteinexpressionsofp15.Bc1.2andBaxweredetermined.RBSUIS:Theoptimalinterferenceconcentrationswas6Onmo1.L一1.Comparedwithnon.transfec
7、tedcellandnegativecontroltransfectedcel1.theviabilityoftransfectedcelltargetingp15-shRNAY2increasedsignificantlyandthenumberofitdecreasedsignificantlyatG1phase;proteinexpressionofp15andBaxdecreasedand
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