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1、第31卷第6期石河子大學(xué)學(xué)報(bào)(自然科學(xué)版)Vo1.31No.62013年12月JournalofShiheziUniversity(NaturalScience)Dec.2O13文章編號(hào):10077383(2013)06—0680—04BVDV一2E2基因的原核表達(dá)及重組蛋白反應(yīng)原性的研究劉昱成,孟慶玲。,喬軍,王國超,張倩,賀志吳,楊海波,陳創(chuàng)夫(1石河子大學(xué)動(dòng)物遺傳改良與疾病控制新疆自治區(qū)重點(diǎn)實(shí)驗(yàn)室,石河子832003;2中國農(nóng)業(yè)科學(xué)院蘭州獸醫(yī)研究所家畜疫病病原生物學(xué)國家重點(diǎn)實(shí)驗(yàn)室,蘭州730046)摘要:為了對(duì)BVDV進(jìn)行診斷,根據(jù)GenBank登錄的BVDV-2E2基因序列,
2、設(shè)計(jì)特異性引物,對(duì)BVDV-2新疆分離株SWE2基因進(jìn)行擴(kuò)增,克隆入T載體中測(cè)序,然后亞克隆人BI21(DE3)表達(dá)載體pET-28a中,構(gòu)建重組表達(dá)載體pET-28a-E2,并轉(zhuǎn)化人大腸埃希氏菌中。用IPTG進(jìn)行誘導(dǎo)重組菌,SDS-PAGE和Westernblot分析表達(dá)產(chǎn)物。SDS-PAGE分析證實(shí)表達(dá)的重組融合蛋白相對(duì)分子量為32ku;Westernblot分析表明該重組蛋白可與BVDV-2多克隆抗體發(fā)生特異性血清學(xué)反應(yīng),證實(shí)表達(dá)的重組E2蛋白具有良好的反應(yīng)原性,為B'vX)V-2診斷試劑研發(fā)奠定基礎(chǔ)。關(guān)鍵詞:BVDV;E2基因;載體構(gòu)建;原核表達(dá)中圖分類號(hào):$852.65文獻(xiàn)
3、標(biāo)志碼:AProkaryoticExpressionE2geneofBovineViralDiarrheaVirusGenotype2andReacti0n0genicityofRecombinantProteinLIUYucheng,MENGQingling,QIAOJun,WANGGuochao,ZHANGQian,HEZhihao,YANGHaibo,CHENChuangfu(1KeyLaboratoryofAnimalGeneticImprovementandDiseaseControlofXinjiangUygurAutonomousRegion·ShiheziUniver
4、sity,Shihezi832003,China;2KeyLaboratoryofNationalVeterinaryEtiologicalBiology,ChineseAcademyofAgriculturalSciences,LanzhouVeterinaryResearchInstitute,Lanzhou730046,China)Abstract:AccordingtoBVDV一2E2genesequencesaccessedinGenBank,apairofspecificprimerswasdesignedtoamplifyE2geneofSWisolate.Theamp
5、lifiedproductwasclonedintoTvectorandsequenced.AndthenE2genewassubclonedintoBI21(DE3)expressionvectorpET一28aforexpression.RecombinantplasmidpET一28a—E2wastransformedintoE.coli,AnalysisofSDS-PAGEandWesternblotwereconductedforexpressionproductsafterIPTGinduction.SDSPAGEconfirmedthatthere—combinantf
6、usionproteinwasexpressedwitharelativemolecularweightof32ku.Westernblotanalysisshowedthattherecombinantproteincanspecificallybereactivetoanti—BVDV一2polyclonalantibody,whichconfirmsthattherecombinantE2proteinisendowedwithgoodreactionogenicity.Thestudylaysafoundationfordevelopingdiagnosticreagents
7、forBVDV一2infection.Keywords:Bovineviraldiarrheavirus(BVDV);E2genes;vectorconstruction;prokaryoticexpression牛病毒性腹瀉/粘膜病(Bovineviraldiarrhea/主要特征的一種傳染病?。BVDV屬黃病毒科(Mucosaldisease,BVD/MD)是由牛病毒性腹瀉病Flaviviridae)瘟病毒屬(Pestivirus)成員,屬內(nèi)還毒(Bo