论文

SYBR Green I荧光定量PCR检测类猪圆环病毒因子P1

  • 温立斌 ,
  • 何孔旺 ,
  • 杨汉春 ,
  • 郭容利 ,
  • 周俊明 ,
  • 钟书霖
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  • 1. 江苏省农业科学院, 兽医研究所, 农业部动物疫病诊断与免疫重点开放实验室, 国家兽用生物制品工程技术研究中心, 江苏南京 210014;
    2. 中国农业大学, 动物医学院, 农业部预防兽医学重点开放实验室, 北京 100094
温立斌(1967-),男,河北宣化人,博士,高级兽医师,主要从事动物分子病毒学与免疫学研究.

收稿日期: 2009-05-10

  网络出版日期: 2014-10-14

基金资助

国家"973"计划前期研究专项(2007CB116308);江苏省自然科学基金(BK2008351)

Detection of Porcine Circovirus-like Agent P1 Using SYBR Green I Fluorescent Quantitative PCR Assay

  • WEN Li-bin ,
  • HE Kong-wang ,
  • YANG Han-chun ,
  • GUO Rong-li ,
  • ZHOU Jun-ming ,
  • ZHONG Shu-lin
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  • 1. Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences Key Laboratory of Animal Diseases Diagnostic and Immunology, Ministry of Agriculture National Center for Engineering Research of Veterinary Bio-products, Nanjing 210014, China;
    2. Key Laboratory of Preventive Veterinary Medicine of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing 100094, China

Received date: 2009-05-10

  Online published: 2014-10-14

摘要

该研究旨在建立快速、敏感和特异的检测类猪圆环病毒因子 P1的 SYBR Green I 荧光定量 PCR 法,用于 P1 的早期诊断.以感染 P1 的猪血清DNA提取物为模板,采用 PCR 扩增 P1 101 bp 的基因片段,将其克隆至 pMD18-T 载体,重组质粒测序并进行同源性分析;以阳性质粒为模板,建立 SYBR Green I 荧光定量PCR检测方法,并进行敏感性和特异性检测.经测序证实扩增片段属于 P1,所建立的 SYBR Green I 荧光定量 PCR 检测 P1 的反应在 101 ~108拷贝/μL 之间具有良好的线性关系,反应的检出下限为10拷贝/μL,而对猪伪狂犬病病毒、猪细小病毒、猪繁殖与呼吸综合征病毒等的检测为阴性,表明该方法敏感、特异.成功建立了 SYBR Green I 荧光定量 PCR 检测 P1 载量的方法,为 P1 致病机制和机体免疫保护机制的研究提供了技术平台.

本文引用格式

温立斌 , 何孔旺 , 杨汉春 , 郭容利 , 周俊明 , 钟书霖 . SYBR Green I荧光定量PCR检测类猪圆环病毒因子P1[J]. 华北农学报, 2009 , 24(4) : 31 -35 . DOI: 10.7668/hbnxb.2009.04.007

Abstract

This experiment was to establish a fast, sensitive, specific SYBR Green I fluorescent quantitative PCR as2 say for early diagnosis of P1 infection. A 101 bp fragment of P1 gene was amplified by PCR based on genomic DNA of P1 obtained from the P1 infected2porcine serum, then cloned into pMD218 T vector.The recombinant plasmid was sequenced and analyzed by BLAST, and the SYBR Green I fluorescent quantitative PCR assaywas established based on positive plas2 mid template. The sensitivity and specificity of the assay were performed.The recombinant plasmid was confirmed by se2 quencing and the fragment belonged to P1. The P1 real2time PCR assay had a dynamic range of detection between 101 and 108 copies/ LL,with a sensitivity of 10 copies/ LL, while the detecting results of porcine pseudorabies virus, porcine par2 vovirus and porcine reproductive and respiratory syndrome virus were negative, which indicated this assay was sensitive and specific for P1 detection.We successfully established a SYBR Green I Fluorescent Quantitative PCR Assay for the quantification of P1 DNA, and it has potential application for investigating the pathogenesis of P1 and the protective me chanism of animal body.

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