資源描述:
《erβ1影響乳腺癌上皮間質(zhì)轉(zhuǎn)化和侵襲遷移的初步實(shí)驗(yàn)研究》由會(huì)員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫。
1、第36卷第4期第三軍醫(yī)大學(xué)學(xué)報(bào)Vo1.36,No.42014年2月28日J(rèn)ThirdMi1MedUnivJan.282014317文章編號(hào):1000.5404(2014)04—0317.04ER阻影響乳腺癌上皮間質(zhì)轉(zhuǎn)化和侵襲遷移的初步實(shí)驗(yàn)研究宗貝歌,周艷,楊新華,張毅,范林軍,張帆,陳莉,齊曉偉,杜俊澤,陳慶秋,姜軍(400038重慶,第三軍醫(yī)大學(xué)西南醫(yī)院乳腺疾病中心)[摘要]目的探討雌激素受體p1(estrogenreceptor131,ERIM)能否通過調(diào)控E.鈣粘蛋白(E.cadherin,E—cad)的表達(dá)影nl~$L腺癌細(xì)胞上皮間質(zhì)轉(zhuǎn)化(epithelial-mesenchymalt
2、ransition,EMT)的發(fā)生,ERB1在乳腺癌細(xì)胞侵襲遷移中的作用。方法通過脂質(zhì)體法將ER[31真核表達(dá)質(zhì)粒和特異性siRNA-ERIM轉(zhuǎn)染至人乳腺癌MDA—MB-231細(xì)胞中,干預(yù)細(xì)胞中ERp1的表達(dá),采用RT—PCR、Westernblot法分別在mRNA和蛋白水平觀察干預(yù)ERBl后對(duì)E.cad表達(dá)的影響,進(jìn)行體外侵襲遷移實(shí)驗(yàn),觀察干預(yù)細(xì)胞中ERB1的表達(dá)對(duì)乳腺癌細(xì)胞惡性生物學(xué)行為的改變。結(jié)果過表達(dá)ERI31后,ERI31及E.cad在mRNA[(0.823±0.028)(0.554±0.044),P=0.025;(0.944±0.04)(0.724±0.28),P=0.026]和蛋
3、白[(1.331±0.019)vs(0.463±0.019),P=0.001;(1.428±0.005)s(0.500±0.010),P<0.01]水平均表達(dá)升高,侵襲[(45.8±7.4)伽(70.4±13.3),P=0.039]遷移[(75.6±8.8)vs(111.8±15.1),P=0.021]力顯著下降,干擾ERI31表達(dá)后,ERI31及E—cad在mRNA[(0.314±0.029)vs(0.554±0.044),P=0.030;(0.444±0.042)(0.724±0.28),P=0.001]和蛋白[(0.353±0.017)s(0.463±0.019),P=0.032;(0.
4、397±0.034)(0.500±0.010),P=0.024]水平均表達(dá)降低,侵襲[(193±22.6)vs(70.4±13.3),P<0.05]遷移[(264.2±53.7)vs(111.8±15.1),P=0.002]力顯著增強(qiáng)。結(jié)論ER[31可能參與乳腺癌的EMT過程,進(jìn)而影響乳腺癌細(xì)胞的侵襲轉(zhuǎn)移能力。[關(guān)鍵詞]乳腺腫瘤;雌激素受體131;E.鈣粘蛋白;上皮間質(zhì)轉(zhuǎn)化;細(xì)胞遷移[中圖法分類號(hào)]R394.2;R730.23;R737.9[文獻(xiàn)標(biāo)志碼]AER阻inhibitsepithelial—mesenchymaltransition,invasionandmigrationofbrea
5、stcancercellsZongBeige,ZhouYan,YangXinhua,ZhangYi,F(xiàn)anLinjun,ZhangFan,ChenLi,QiXiaowei,DuJunze,ChenQingqiu,JiangJun(CenterofBreastDisease,SouthwestHospital,ThirdMilitaryMedicalUniversity,Chongqing,400038,China)[Abstract]ObjectiveToinvestigatetheroleofestrogenreceptor131(ERI31)inepithelial—mesenehymal
6、transition(EMT)ofbreastcancercellsbyregulatingtheexpressionofE-cadherin(E-cad),andtoexploretheeffectsofERB1ontheinvasionandmigrationofbreastcancercells.MethodsTherecombinanteukaryoticvectorcontainingER[McDNAorspecificsiRNAtargetingER[31wastransfectedtohumanbreastcancerceilsMDA—MB_231tointerferetheex
7、pressionofERB1.RT.PCRandWesternblottingwereusedtodetecttheexpressionofER[31andE.cadonmRNAandproteinlevels.Moreover.invasionandmigrationassaysvitrowereappliedtoassesstheinfluenceofERB1expressioninterfe