›› 2009, Vol. 36 ›› Issue (6): 162-164.

• 流行病防治 • 上一篇    下一篇

猪圆环病毒2型间接ELISA抗体检测方法的建立与初步应用

史利军,张锦秀,任林柱,李刚   

  1. (中国农业科学院北京畜牧兽医研究所, 北京 100193)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2009-06-20 发布日期:2009-06-20
  • 通讯作者: 李刚

Establishment of Antibody Indirect ELISA and its Initial Application

SHI Li-jun, ZHANG Jin-xiu, REN Lin-zhu, LI Gang   

  1. (Institute of Animal and Veterinary Medicine, Chinese Academy of Agriculture Sciences, Beijing 100193, China)
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-06-20 Published:2009-06-20
  • Contact: LI Gang

摘要: 本研究利用原核表达的猪圆环病毒2型(PCV2)Cap蛋白作为标准抗原蛋白建立PCV2抗体检测方法,同时对建立的检测方法的相关条件进行了优化。通过优化确定抗原的最佳包被浓度为10 μg/mL,血清的最佳稀释度为1∶160,最佳封闭试剂为10%牛血清,二抗的使用浓度为1∶1000,血清及二抗的最佳反应条件为37 ℃孵育60 min,底物的最佳反应条件为37 ℃反应10 min,cutoff值为0.25。通过批内及批间重复性的评价,变异系数均小于0.1,表明本检测方法具有较高的可重复性。与标准的检测试剂盒相比,检测临床样本时,本检测方法与对照试剂盒检测结果符合率为91.7%。结果表明,建立的检测方法可用于临床PCV2抗体的检测。

关键词: 猪圆环病毒2型; 核衣壳蛋白; 间接酶联免疫吸附试验

Abstract: This study established an indirect antibody enzyme-linked assay system based on the expressed Cap protein. We optimized some factors such as antigen coating concentration (10 μg/mL), the dilution of serum samples (1∶160), blocking reagent (10% bovine serum), the work concentration of HRP-labeled anti-porcine IgG (1∶1000), reacted conditions of samples and HRP-labeled anti-porcine IgG (37 ℃, 60 min). The value of cutoff is 0.25. The CV is not beyond 0.1. In the detection of 60 clinical samples, the established ELISA showed excellent agreement with the compared kit (91.7%). The developed ELISA is suitable for PCV2 monitoring and detection, especially for screening large number of samples in farms.

Key words: porcine circovirus 2; capsid protein; indirect ELISA

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