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时间:2020-05-14
《抗肠道病毒71型特异性卵黄抗体的制备及鉴定.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、朱思思等抗肠道病毒71型特异性卵黄抗体的制备及鉴定第1O期·913·doi:10.3969/j.issn.1000-484X.2011.10.012抗肠道病毒71型特异性卵黄抗体的制备及鉴定①朱思思赵肃清李月明温俊林(广东工业大学轻工化工学院,广州510006)中国图书分类号R392文献标识码A文章编号1000-484x(20l1)10-0913-05[摘要]目的:制备特异性抗肠道病毒71型(Enterovirus71,EV71)的卵黄抗体并检测其生物学性能,这对Ev71感染手足口病的预防和治疗具有重大的意义。方法:用纯
2、化并灭活后EV71作为抗原免疫健康产蛋鸡。采用本实验室水提综合聚乙二醇法提取纯化鸡卵黄抗体;用Bradford法测定卵黄抗体提取液的蛋白含量;还原性SDS-PAGE凝胶电泳分析测定提取蛋白的纯度及相对分子质量;分别用ELISA、双向免疫琼脂扩散检测纯化特异性卵黄抗体抗EV71效价;Westernblot分析特异性卵黄抗体的免疫反应性。结果:卵黄中卵黄抗体含量达7.76mg/n~,卵黄抗体的纯度为94.86%。初免10天后蛋黄中可检测到特异性抗EV71卵黄抗体,初免4JD天后ELISA检测抗体效价高达1:20480,双向琼
3、脂扩散检测效价达1:16。提取的卵黄抗体具有良好的免疫反应性,能与EV71特异性结合。结论:水提综合聚乙二醇法提取纯化得到的抗Ev71卵黄抗体产量和纯度高、效价好且具有良好的免疫反应性。[关键词]肠道病毒71型;卯黄抗体;手足口病;制备;鉴定Preparationandidentificationofspecificchickeneggyolkimmunoglobulinsagainstenterovirus71ZHUsi—si,ZHAOSu—Q,LIYue一,WENJun—Lin.LightIndustryInstit
4、uteofChemical,GuangdongUniversityTechnology,Guangzhou510006,China[Abstract]Objective:Preparingspecificitychickeneggyolkantibody(IgY)againstenterovirus71(EV71)anddetectingitsbiologicalactivities,thisissignificantforpreventionandtreatmentofEV71infection.Methods:Fou
5、rhenswereimmunizedthreetimeswiththepurifiedhumanEV71virusasanantigen.TheimmunoglobulinY(IgY)antibodyWasextractedandpurifiedfromtheegyolkbywatercombinepolyethyleneglycol(water-peg)method.TheyieldandmolecularmassofIgYwereanalysedbyBradfordmethodandSDS-PAGEelectmpho
6、re-sis.ELISAandAgardoubleimmunodifnsionwereusedfordetectthetiterofIgY,whiletheimmunoreactivityofanti-EV71IgYwastestedusingWestemblot.Results:TheyieldandpurityofIgYwere7.76mg/rI1land94.86%respectively.ResultsofELISAindicatedthatthespecifican—ti-EV71IgYantibodyappe
7、aredintheegyolk10daysafterprimaryimmunizationandreachedthehighesttiter1:20480after40days,whilethetiterofAgardoubleimmunodifnsionWas1:16.WesternblotanalysisrevealedthatthepurifiedIgYantibodyownedgoodimmunoreactivityandaspecifcalycombinationcapacityofEv71virus.Conc
8、lusion:EgyolkisalargescalesourceofantidodysspecifcallyagainstEV71virus.Theanti—EV71IgyextractedandpurifiedbyWater-PEGmethodpossessgoodproduction,purity,andbiol
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