文献类型：期刊文献

中文题名：猪瘟病毒结构蛋白E0抗体间接ELISA检测方法的建立及优化

英文题名：Establishment and Optimization of Indirect ELISA for Detection of Structural Protein E0 Antibody of Classical Swine Fever Virus

作者：郭东光[1];陈明艳[1];朱艳平[1];李鹏[1];岳锋[1];崔芳微[1,2];李文明[1,2];王金海[1];王选年[1]

机构：[1]新乡学院生命科学技术学院,河南新乡453003;[2]郑州大学生命科学技术学院,河南郑州450000

第一机构：新乡学院生命科学技术学院

年份：2019

卷号：48

期号：11

起止页码：151-156

中文期刊名：河南农业科学

外文期刊名：Journal of Henan Agricultural Sciences

收录：CSTPCD;;北大核心:【北大核心2017】；

基金：河南省科技攻关项目(192102110066);河南省高等学校重点科研项目(19A230009);新乡学院博士科研启动经费项目(1366020120)

语种：中文

中文关键词：猪瘟病毒;结构蛋白E0;抗体检测;间接ELISA

外文关键词：CSFV;Structural protein E0;Antibody detection;Indirect ELISA

摘要：为建立一种经济、可靠的猪瘟病毒(CSFV)血清抗体检测方法,采用间接ELISA(E0-ELISA)方法,以在大肠杆菌(Escherichia coli)中表达的重组蛋白E0为包被原,优化反应条件。结果显示,优化后的E0-ELISA在包被原1.0μg/mL质量浓度下37℃包被1 h效果最佳,最佳封闭条件为5%脱脂奶粉溶液37℃作用2 h,待检血清以1∶100稀释后37℃作用60 min效果最佳,二抗以1∶5000稀释后37℃孵育45 min效果最佳。当OD 450<0.370时,判断为猪血清CSFV抗体阴性;批内和批间重复试验变异系数分别为1.99%~7.69%和2.16%~9.23%,表明该方法具有良好的稳定性;E0-ELISA检测猪繁殖与呼吸综合征病毒(PRRSV)、猪伪狂犬病毒(PRV)、猪圆环病毒(PCV)、猪细小病毒(PPV)阳性血清时结果均为阴性;当CSFV阳性血清稀释至1∶640时结果仍为阳性,表明该检测方法具有良好的敏感性;与IDEXX CSFV抗体检测试剂盒相比,E0-ELISA检测符合率为92.00%,敏感性为97.86%,特异性为78.33%。综上,成功建立一种经济、稳定、特异性好和敏感性高的CSFV血清抗体间接ELISA检测方法。
In order to establish an economical and reliable method for the detection of serum antibody against classical swine fever virus(CSFV),the recombinant protein E0 expressed in Escherichia coli was used as the coating agent,an indirect ELISA(E0-ELISA) was developed for the detection of serum antibody against CSFV.The results showed that the optimized E0-ELISA best effect was gained when the E0 protein was coated at 37 ℃ for 1 h and the protein mass concentration at 1.0 μg/mL.The best blocking condition was 5% skimmed milk powder solution at 37 ℃for 2 h.The best effect was obtained when the serum to be tested was diluted at 1∶100 and incubated at 37 ℃ for 60 min,and when the second antibody was diluted at 1∶5 000 and incubated at 37 ℃ for 45 min.When OD450<0.370,it was negative for CSFV antibody.The variation coefficients of intra-batch and inter-batch repeated tests were 1.99%-7.69% and 2.16%-9.23%,respectively,which showed a good stability for the indirect ELISA.The positive serum of PRRSV,PRV,PCV and PPV tested by E0-ELISA showed the negative results.It was still positive when the positive serum CSFV was diluted to 1∶640,showing that E0-ELISA had a good sensitivity.Compared with IDEXX CSFV antibody detection kit,the E0-ELISA coincidence rate,sensitivity and specificity were 92.00%,97.86% and 78.33%,respectively.All the results indicated that an economical,stable,specific and sensitive indirect ELISA for detection of CSFV antibodies was successfully established.