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1、復(fù)里孝報(bào)‘醫(yī)學(xué)版FudanUUnniivvJMedSci2。u14斗~I(xiàn)VIar.·,’4斗1(2二)161靶向干擾CXCR7基因表達(dá)對(duì)肝癌(HCC)細(xì)胞增殖及凋亡的影響林靈韓梅梅王芳申華莉余紅秀。楊芄原1,2(’復(fù)旦大學(xué)生物醫(yī)學(xué)研究院上海200032;。復(fù)旦大學(xué)化學(xué)系,生命科學(xué)學(xué)院上海200433)【摘要】目的探討CXCR7基因在不同肝癌細(xì)胞系及肝癌組織中的表達(dá)情況,并研究靶向抑制CXCR7基因表達(dá)對(duì)肝癌細(xì)胞增殖及凋亡的影響方法應(yīng)用Westernblot檢測(cè)不同肝癌細(xì)胞系及1O例肝癌組織中CXCR7蛋白的表達(dá)水平。采用短發(fā)夾狀RNA(shorthai
2、rpinRNA,shRNA)干擾技術(shù)沉默HCCLM3與MHCC97L細(xì)胞中CXCR7基因的表達(dá),分別采用WesternBlot和qRT—PCR檢測(cè)shRNA的靶向沉默效果。通過(guò)CCK一8增殖實(shí)驗(yàn)與AnnexinV-FITC/PI細(xì)胞雙染色研究CXCR7抑制對(duì)HCCLM3與MHCC97L增殖及凋亡的影響。結(jié)果CXCR7表達(dá)水平與肝癌細(xì)胞的惡性程度呈正相關(guān),肝癌組織中CXCR7表達(dá)水平較癌旁顯著升高。實(shí)驗(yàn)成功構(gòu)建了9個(gè)慢病毒表達(dá)載體,其中CXCR7shRNA-566序列干擾效率最高。增殖實(shí)驗(yàn)顯示干擾表達(dá)組細(xì)胞生長(zhǎng)速度受到明顯抑制(P<0.05);流式細(xì)胞儀
3、分析顯示干擾CXCR7表達(dá)可誘導(dǎo)細(xì)胞凋亡的發(fā)生。結(jié)論CXCR7表達(dá)水平與肝癌惡性程度呈正相關(guān),靶向干擾CXCR7表達(dá)可抑制細(xì)胞的增殖能力,誘導(dǎo)細(xì)胞發(fā)生凋亡?!娟P(guān)鍵詞】肝細(xì)胞肝癌(HCC);CXCR7基因;短發(fā)夾狀RNA(shRNA);增殖能力;細(xì)胞凋亡【中圖分類(lèi)號(hào)】R735.7【文獻(xiàn)標(biāo)志碼】Adoi:10.3969/j.issn.1672—8467.2014.02.004EffectsofinhibitingCXCR7geneexpressiononbiologicalcharacteristicsofhumanhepatocellularcarcin
4、oma(HCC)celllinesLINLing,HANMei~mei’,WANGFang,SHENHua—li,YUHong—xium△,YANGPeng—yuan,(InstitutesofBiomedicalSciences,F(xiàn)udanUniversity,Shanghai200032,China;DepartmentsofChemistry,SchoolofLifeSciences,F(xiàn)udanUniversity,Shanghai200433,China)[Abstract]ObjectiveToexploretheexpressionofch
5、emokinereceptorCXCR7onhumanhepatocellularcarcinoma(HCC)celIlinesandtumorsamples,andtheeffectsofCXC:R7oncellproliferationandapoptosisofHCCcelllines.MethodsWesternblotanalysiswasappliedtodetectCXCR7proteinexpressioninHCCcelllinesand10pairsofHCCspecimenswithadjacenttissues.RNAinter
6、ferencemethodofshorthairpinRNA(shRNA)wasusedtosilenceCXCR7expressioninHCCLM3andMHCC97Lcells.TheexpressionsofCXCR7mRNAandproteinweredeterminedbyqRT—PCRandWesternblot,respectively.TheeffectsofCXCR7down-regulationoncellproliferationandapoptosisweremeasuredbyCCK一8assayandAnnexinv_FI
7、TC/PIapoptosisdetection.ResultsTheCXCR7expressionwasgraduallyenhancedwithincreasingmetastaticpotentialofHCCcelllines,衛(wèi)生部“艾滋病和病毒性肝炎等重大傳染病防治”重大專項(xiàng)(2012ZX]0002012-006);上海市衛(wèi)生局基金(2009002)△CorrespondingauthorE—mail:hongxiuyu@fudan.edu.cn162復(fù)旦學(xué)報(bào)(醫(yī)學(xué)版)2014年3月,41(2)andcomparedtoadjacenttis
8、suesofclinicalspecimens,CCR7expressionwashugely