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1、第37卷第3期中國預(yù)防獸醫(yī)學(xué)報(bào)Vo1.37.NO.32015年3月ChineseJournalofPreventiveVeterinaryMedicineMar.2015doi:10.3969~.issn.1008-0589.2015.03.12基因C型鴨甲肝病毒競(jìng)爭(zhēng)ELISA抗體檢測(cè)方法的建立何美琳,張煥容,程方明,楊曉農(nóng)1,2,岳華,f1.西南民族大學(xué)生命科學(xué)與技術(shù)學(xué)院,四川成都610041;2.西南民族大學(xué)動(dòng)物醫(yī)學(xué)四川I省高等學(xué)校重點(diǎn)實(shí)驗(yàn)室,四川成都610041)摘要:為建立檢測(cè)基因c型鴨甲肝病毒(DHAV.c)血清抗體的方法,本研究以純
2、化的DHAV.C作為包被抗原,抗DHAV.C單克隆抗體(MAb)5E3—9與待檢血清競(jìng)爭(zhēng)結(jié)合抗原,采用方陣法確定包被抗原、MAb及待檢血清的最佳工作濃度,經(jīng)過對(duì)反應(yīng)條件的優(yōu)化,建立了DHAV.C抗體的競(jìng)爭(zhēng)ELISA檢測(cè)方法。該方法僅對(duì)DHAV—C血清檢測(cè)為陽性,與DHAV.A、鴨圓環(huán)病毒、鴨乙型肝炎病毒等相關(guān)病原的鴨陽性血清無交叉反應(yīng)。敏感性試驗(yàn)表明,標(biāo)準(zhǔn)陽性血清1:128倍稀釋時(shí),檢測(cè)結(jié)果仍為陽性,比中和試驗(yàn)靈敏性更高。批內(nèi)批間變異系數(shù)分別為4.64%~5.21%和6.02%~8.68%,具有良好的重復(fù)性。與中和試驗(yàn)比較,陽性符合率為100%
3、(15/15),陰性符合率為77.8%(14/181。本研究基于純化的DHAV.C及其特異性MAb建立的MAb競(jìng)爭(zhēng)ELISA檢測(cè)方法可以用于DHAv.C流行病學(xué)調(diào)查以及抗體的檢測(cè)。關(guān)鍵詞:基因C型鴨甲肝病毒;單克隆抗體;競(jìng)爭(zhēng)ELISA;抗體檢測(cè)中圖分類號(hào):$852.65文獻(xiàn)標(biāo)識(shí)碼:A文章編號(hào):1008—0589(2015)03—02l1-05DevelopmentofacompetitiveELISAfordetectingantibodiesagainstgenotypeCduckhepatitisAvirusbasedonthemonocl
4、onalantibodyHEMei-lin,ZHANGHuan—rong,,CHENGFang—ming,YANGXiao-nong,,YUEHua’(1.CollegeofLifeScienceandTechnology,SouthwestUniversityforNationalities,Chengdu610041,China;2.KeyLaboratoryofVeterinaryMedicineofUniversityinSichuanProvince,SouthwestUniversityforNationalities,Chengd
5、u610041,China)Abstract:TheobjectiveofthisstudyistodevelopacompetitiveELISAtodetecttheantibodyagainstduckhepatitisAvirusgenotypeC(DHAV—C).ThepurifiedDHAV-Cwasusedascoatingantigen,andDHAV—CspecificMAb5E3-9ascompetitiveantibodyagainstDHAV-Cantibody.Undertheoptimizedreactingcond
6、itions,including10mLpurifiedDHAV—Ccoatingantigen,1:800dilutionofMAb5E3—9dilutingthetestserl/mto1:2ratio,and1:5,000dilutionofHRPconjugatedgoatanti-miceIgGwiththepositivecut-ofvalueofinhibitionratio36.86%.Thespecificitytestshowedthattherewerenocrossreactionwithduckanti—seraofa
7、lltestedrelativepathogens,suchasduckhepatitisAvirusgenotypeA(DHAV—A),duckcircovirus,duckhepatitisBvirusandother6pathogens.Thesensitivitytestshowedthat1:64dilutedDHAV—CpositiveseracouldbedetectedpositivewiththisdevelopedcompetitiveELISA.The15neutralizationtestdetectedpositive
8、serawereallpositivewhentheyweredetectedbythedevelopedcompetitiveELISA,while