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High resolution melting curve analysis as a new tool for rapid identification of canine parvovirus type 2 strains

文献类型: 外文期刊

作者: Bingga, Gali 1 ; Liu, Zhicheng 2 ; Zhang, Jianfeng 2 ; Zhu, Yujun 3 ; Lin, Lifeng 2 ; Ding, Shuangyang 1 ; Guo, Pengju 4 ;

作者机构: 1.China Agr Univ, Coll Vet Med, Dept Vet Pharmacol & Toxicol, Beijing 100094, Peoples R China

2.Guangdong Acad Agr Sci, Inst Anim Hlth, Guangzhou, Guangdong, Peoples R China

3.Guangzhou Bortzi Biotech Ltd, Guangzhou, Guangdong, Peoples R China

4.Guangdong Lab Anim Monitoring Inst, Guangdong Key Lab Lab Anim, Guangzhou, Guangdong, Peoples R China

关键词: PCR;Canine parvovirus;VP2 gene;High resolution melting curve analysis;Heteroduplex

期刊名称:MOLECULAR AND CELLULAR PROBES ( 影响因子:2.365; 五年影响因子:2.386 )

ISSN:

年卷期:

页码:

收录情况: SCI

摘要: A high resolution melting (HRM) curve method was developed to identify canine parvovirus type 2 (CPV-2) strains by nested PCR. Two sets of primers, CPV-426F/426R and CPV-87R/87F, were designed that amplified a 52 bp and 53 bp product from the viral VP2 capsid gene. The region amplified by CPV-426F/426R included the A4062G and T4064A mutations in CPV-2a, CPV-2b and CPV-2c. The region amplified by CPV-87F/87R included the A3045T mutation in the vaccine strains of CPV-2 and CPV-2a, CPV-2b and CPV-2c. Faecal samples were obtained from 30 dogs that were CPV antigen-positive. The DNA was isolated from the faecal samples and PCR-amplified using the two sets of primers, and genotyped by HRM curve analysis. The PCR-HRM assay was able to distinguish single nucleotide polymorphisms between CPV-2a, CPV-2b and CPV-2c using CPV-426F/426R. CPV-2a was distinguished from CPV-2b and CPV-2c by differences in the melting temperature. CPV-2b and CPV-2c could be distinguished based on the shape of the melting curve after generating heteroduplexes using a CPV-2b reference sample. The vaccine strains of CPV-2 were identified using CPV-87F/87R. Conventional methods for genotyping CPV strains are labor intensive, expensive or time consuming; the present PCR-based HRM assay might be an attractive alternative. (C) 2014 Elsevier Ltd. All rights reserved.

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