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1、ChinJClinPharmacoI791Vo1.30No,9September2014(SedalNo.179)丙戊酸鈉誘導(dǎo)白血病細(xì)胞周期阻滯的機(jī)制研究Studyonvalproicacidinducedtumorcellcyclearrest王麗紅h,張志華,朱松巖,摘要:目的檢測丙戊酸鈉(VPA)在動物體內(nèi)對白血病細(xì)胞周期蛋白(cyclins)趙蕾,郝長來及細(xì)胞周期蛋白依賴性激酶(CDKs)表達(dá)的影響。方法建立急性髓系白血病Kasumi一1細(xì)胞裸鼠移植瘤模型,分為對照組及VPA治療組(腹腔注射VPA500mg·kg~,
2、2周),用RT—PCR法檢測cyclinD1、cyclinE1和CDK4、CDK6、CDK2的mRNA的表達(dá)水平,用Westernblot法檢測cyclinD1蛋白的表達(dá)水平。結(jié)果(1.承德醫(yī)學(xué)院附屬醫(yī)院,a內(nèi)分泌科;b.血與對照組相比,VPA治療組cyclinD1、cyclinE1和CDK4、CDK6、CDK2mRNA的表液病科,河北承德067000;2.承德市中醫(yī)院超聲科,河北承德067000)達(dá)明顯下調(diào)(P<0.05);cyclinD1蛋白的表達(dá)明顯下降(P<0.01)。結(jié)論VPA下調(diào)cyclinD1、cyclinE1
3、、CDK4、CDK6和CDK2的表達(dá),是VPA誘導(dǎo)腫瘤細(xì)胞周期阻滯的機(jī)制之一。WANGLi—hongh,關(guān)鍵詞:丙戊酸鈉;細(xì)胞周期;細(xì)胞周期蛋白;細(xì)胞周期蛋白依賴性激酶ZHANGZhi—hua,DOI:10.13699/j.cnki.1001—6821.2014.09.012中圖分類號:R963;R971.4文獻(xiàn)標(biāo)志碼:AZHUSong—yah,ZHAOLei,文章編號:1001—6821(2014)09—0791—03HAOChang—laiAbstract:ObjectiveToexplorethemolecularme
4、chanismofvalproicacid(VPA)inducingtumorcellcyclearrest,bydeterminingtheexpres—(.EndocrinologyDepartment;sionofcyclinsandcyclin—dependentkinases(CDKs).MethodsNude6.HaematologyDepartment,AffiliatedmicemodelwithxenografKasumi——1tumorwasestablishedbysubcuta·HospitalofC
5、hengdeMedicalCollege,neousinoculationofKasumi一1cells.a(chǎn)nddevidedtwogroups:controlChengde067000,HebeiProvince,Chi—groupandVPAtreatmentgroup(intraperitonealinjectionofVPA500i'ta:2.ChineseMedicineHospitalofmg。kgfor2weeks).TheexpressionlevelsofcyclinD1,cyclinE1,Chengde0
6、67000,HebeiProvince,CDK4,CDK6,CDK2mRNAweredeterminedbysemi—quantitativeChina)RT—PCR.TheexpressionlevelofcyclinD1proteinwasdeterminedbyWesternblot.ResultsComparedwiththecontrolgroup,VPAsignifi-eantlyreduetedtheexpressionofcyclinD1,cyclinE1,CDK4,CDK6,CDK2mRNA(P<0.05)
7、;andreducedtheexpressionofcyclinD1protein(P<0.01).ConclusionThemechanismthatVPAinductescellcyclearrestispossiblyduetodownregulationofcyclinD1,CDK4/6,cyclinEandCDK2expression.Keywords:valproicacid;cellcycle;cyclin;cyclin—dependentkinase腫瘤的發(fā)生與細(xì)胞周期的失調(diào)密切相關(guān),細(xì)胞周期的失控,使細(xì)收稿
8、日期:2014一Ol一03修回日期:2014—02—17胞增殖過多而凋亡過少,導(dǎo)致腫瘤的形成。細(xì)胞周期蛋白依賴性激基金項(xiàng)目:河北省自然科學(xué)基金資助項(xiàng)目酶(cyclin—dependentkinases,CDKs)在細(xì)胞增殖和基因表達(dá)中起重(C2008000660)要的作用,但其發(fā)揮作用需要