首页> 中文期刊> 《畜牧兽医学报》 >猪瘟病毒野毒株和兔化弱毒疫苗株RT-PCR-RFLP鉴别检测方法的建立

猪瘟病毒野毒株和兔化弱毒疫苗株RT-PCR-RFLP鉴别检测方法的建立

         

摘要

本研究旨在建立猪瘟病毒野毒株和兔化弱毒疫苗株RT-PCR-RFLP鉴别检测方法.根据Shimen株设计1对特异性引物,建立猪瘟病毒RT-PCR-RFLP检测方法;对20份疑似猪瘟临床样品进行检测,并对检出的山东8株流行野毒株和2株疫苗株PCR产物进行克隆与序列分析,验证上述方法.结果RT-PCR扩增片段为825 bp,产物经RFLP分析,野毒株的PCR产物能被ApaⅠ酶切为322 bp和503 bp 2个片段,兔化弱毒疫苗株则不能被酶切,检测出RNA的最低浓度为0.028 6 μg,mL-1;8株流行野毒株都含GGGCCC序列(ApaⅠ酶切位点),2株疫苗株相应序列为GAGCCC,不能被Apa Ⅰ酶切;8株流行野毒株属于基因2群,2株疫苗株与HCLV遗传关系近,为基因1群.建立了可鉴别猪瘟病毒野毒株和兔化弱毒疫苗株RT-PCR-RFLP检测方法,为猪瘟的防控提供有效手段.%A RT-PCR-RFLP assay was developed for the detection and differentiation between wild-type and rabbit attenuated vaccine viruses of classical swine fever virus (CSFV). A pair of specific primers was designed based on the Shimen strain, and used to verify the assay. Eight epidemic wild-type strains isolated from 20 clinical pathological samples of suspected swine fever and 2 vaccine strains were amplified by RT-PCR, cloned and sequenced. The results showed that a fragment of 825 bp was amplified from genomic RNA of CSFV wild-type which could be digested with Apa I into two fragments of 322 bp and 503 bp when analyzed with RFLP, while the vaccine strain could not be digested with Apa I. The lowest concentration of RNA could be detected in the present assay is 0. 028 6 μg · mL-1. Eight epidemic wild-type strains contained the Apa I recognition sequence GGGCCC while the two vaccine strains contained the sequence GAGCCC. Eight epidemic wild-type strains belonged to Genomic Group 2. On the contrary, two vaccine strains with close genetic relationship to HCLV belonged to Genomic Group 1. The developed RT-PCR-RFLP could be used to detect and differentiate wild-type CSFV from pig vaccinated with the vaccine viruses.

著录项

  • 来源
    《畜牧兽医学报》 |2012年第6期|943-949|共7页
  • 作者单位

    青岛农业大学山东省预防兽医学重点实验室,青岛266109;

    青岛农业大学山东省预防兽医学重点实验室,青岛266109;

    青岛农业大学山东省预防兽医学重点实验室,青岛266109;

    青岛农业大学山东省预防兽医学重点实验室,青岛266109;

    青岛农业大学山东省预防兽医学重点实验室,青岛266109;

    青岛农业大学山东省预防兽医学重点实验室,青岛266109;

    莱阳市畜牧局,莱阳265200;

    青岛农业大学山东省预防兽医学重点实验室,青岛266109;

    青岛农业大学山东省预防兽医学重点实验室,青岛266109;

    青岛农业大学山东省预防兽医学重点实验室,青岛266109;

  • 原文格式 PDF
  • 正文语种 chi
  • 中图分类 S852.651;
  • 关键词

    猪瘟病毒; 野毒株; 兔化弱毒疫苗株; RT-PCR-RFLP;

相似文献

  • 中文文献
  • 外文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号