資源描述:
《APE1 siRNA增強(qiáng)卵巢癌細(xì)胞鉑類敏感性的實(shí)驗(yàn)研究-論文.pdf》由會(huì)員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在應(yīng)用文檔-天天文庫(kù)。
1、現(xiàn)代婦產(chǎn)科進(jìn)展2012年8月第21卷第8期ProgObstetGynecol,Aug.2012yoJ.2】o.·論著·APE1siRNA增強(qiáng)卵巢癌細(xì)胞鉑類敏感性的實(shí)驗(yàn)研究張穎,辛?xí)匝?,王建,楊紅,陳必良,王東(1.第四軍醫(yī)大學(xué)西京醫(yī)院婦產(chǎn)科,西安710032;2.解放軍第三二三醫(yī)院婦產(chǎn)科,西安710054;3.第三軍醫(yī)大學(xué)大坪醫(yī)院腫瘤中心,重慶400042)【摘要】目的:本研究通過(guò)觀察脫嘌脫嘧啶核酸內(nèi)切酶(APE1/Ref-1)小分子干擾核糖核酸(siRNA)對(duì)卵巢癌細(xì)胞中APE1表達(dá)水平及順鉑敏感性的影響,探討以APE1為靶點(diǎn)的基因治療在卵巢癌化療增敏中的臨床應(yīng)用前景。方法:應(yīng)
2、用RNAi技術(shù)抑制卵巢癌順鉑敏感株A2780和順鉑耐藥株A2780/CP70中APE1的表達(dá),并用M1T法及TUNEL等技術(shù)檢測(cè)APE1siRNA對(duì)卵巢癌細(xì)胞鉑類敏感性的影響。結(jié)果:MTI"藥物敏感試驗(yàn)表明,20M0I和4OMOIAPE1siRNA處理后,A2780細(xì)胞順鉑IC。值由對(duì)照組的31.62t~mol/L分別降低為13.38~mol/L和3.48I.LmoL/L,有統(tǒng)計(jì)學(xué)差異(P<0.01)。20MOI和40MOIAPE1siRNA處理后,A2780/CP70細(xì)胞的順鉑IC值分別為39.73~mol/L和12.43txmol/L,較對(duì)照組(64.201xmol/L)分別
3、下降了38.12%和80.64%,有統(tǒng)計(jì)學(xué)差異(P<0.01)。TUNEL凋亡原位檢測(cè)表明,40MOIAPE1siRNA處理后,A2780和A2780/CP70細(xì)胞的凋亡指數(shù)分別為(42.16±3.61)%和(46.11±3.81)%,分別是DDP組的3.57倍、4.94倍,有統(tǒng)計(jì)學(xué)差異(P<0.01)。結(jié)論:抑制APE1表達(dá)能顯著增加卵巢癌細(xì)胞對(duì)順鉑的敏感性,APE1可能是逆轉(zhuǎn)卵巢癌鉑類耐藥的有效靶點(diǎn)?!娟P(guān)鍵詞】順鉑;卵巢腫瘤;RNA,小分子干擾;DNA.(無(wú)嘌呤或無(wú)嘧啶位點(diǎn))裂合酶中圖分類號(hào):R737.31文獻(xiàn)標(biāo)志碼:A文章編號(hào):1004—7379(2012)08—0590—
4、06APE1siRNAenhancesplatinum-sensitivityofhumanovariancancercells.ZhangYing.XinXiaoyan,WangJian,eta1.1.DepartmentofGynecologyandObstetrics,XijingHospital,F(xiàn)ourthMilitaryMedicalUniversity,Xian710032:2.DepartmentofGynaecologyand0bstet—rics.PLA323Hospital。Xian710054【Abstract】objective:T0investigat
5、etheeffectof印urinic/apyrimidinicendonuclease(APE1/Ref.1)smallinterferingRNA(siRNA)ontheexpressionofAPE1andthesensitivitytocisplatininhumanovariancancerA2780andA2780/CP70cells.Methods:TheexpressionofhumanAPE1proteinwasdetectedbyWesternblotanalysisandindirectimmunofluorescenceafterAPE1siRNAwast
6、ransferedintoovariancancercells.A2780andA2780/CP70cellsweretreatedwithcisplatinatvariousconcentrations48hoursafterAPE1siRNAtransfectionintoO—variancancercells.Thecellularproliferationcapacitywasobservedwith3.(4.5.dimethyhhia—zol一2一y1)-2,5-diphenyhetrazoliumbromide(M1Tr)assay.Cellapoptosiswasd
7、eterminedbyTUNEL.Results:APE1siRNAcouldeffectivelysuppresstheAPE1expression.ThedataofM1TrshowedthatAPE1siRNAenhancedplatinumsensitivityofA2780andA2780/CP70celllines.Pretreatmentwith20M0Iand40M0IAPE1siRNArespectively.the50%inhibitorvcon—centra