畜牧兽医学报 ›› 2025, Vol. 56 ›› Issue (8): 4112-4119.doi: 10.11843/j.issn.0366-6964.2025.08.048

• 研究简报 • 上一篇    下一篇

不同基因型猫嵌杯状病毒的分离鉴定与致病性比较

李博文1(), 王淑娟2, 胡煜锋3, 王益冰3, 甘雪强1, 陈岩岩3, 王东方2, 马震原2, 赵雪丽2, 闫若潜2,*()   

  1. 1. 河南科技大学动物科技学院, 洛阳 471023
    2. 河南省动物疫病预防控制中心/河南省重大动物疫病监测预警及防控重点实验室, 郑州 450000
    3. 河南农业大学动物医学院, 郑州 450002
  • 收稿日期:2024-09-30 出版日期:2025-08-23 发布日期:2025-08-28
  • 通讯作者: 闫若潜 E-mail:993315508@qq.com;yrq1688@126.com
  • 作者简介:李博文(1996-),男,河南汤阴人,硕士生,主要从事预防兽医研究,E-mail: 993315508@qq.com
  • 基金资助:
    河南省重大科技专项(221100110600)

Isolation and Identification of Feline Calicivirus and Analysis of Important Nucleotide Sequences

LI Bowen1(), WANG Shujuan2, HU Yufeng3, WANG Yibing3, GAN Xueqiang1, CHEN Yanyan3, WANG Dongfang2, MA Zhenyuan2, ZHAO Xueli2, YAN Ruoqian2,*()   

  1. 1. College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471023, China
    2. Henan Centrefor Animal Diseases Control and Prevention/Henan Provincial Key Laboratory of Monitoring, Early Warning and Prevention and Control of Major Animal Diseases, Zhengzhou 450000, China
    3. College of Veterinary Medicine, Henan Agricultural University, Zhengzhou 450002, China
  • Received:2024-09-30 Online:2025-08-23 Published:2025-08-28
  • Contact: YAN Ruoqian E-mail:993315508@qq.com;yrq1688@126.com

摘要:

本研究针对猫嵌杯状病毒(FCV)的遗传变异与致病特征展开分析,成功分离鉴定5株FCV流行毒株。通过检测127份临床样本获得31份核酸阳性样本(阳性率24.4%),经细胞培养分离获得5株病毒。结果显示:其中4株为FCVⅠ型(HN78等),1株为FCVⅡ型(HN77)。病毒粒子电镜观察显示典型球形无囊膜结构,VP1基因测序显示毒株间相似性为75.4%~75.65%。动物回归试验证实,Ⅰ型HN78与Ⅱ型HN77均能引发典型临床症状,但不同基因型致病特征存在差异。该研究首次系统比较我国FCV基因Ⅰ/Ⅱ型的生物学特性,为疫苗研发和临床防控提供了重要毒株资源与理论依据。

关键词: 猫嵌杯状病毒(FCV), 分离株, 遗传特征, 变异, 基因测序

Abstract:

This study aimed to analyze the genetic variation and pathogenic characteristics of feline calicivirus (FCV) and successfully isolated and identified five prevalent FCV strains. A total of 127 clinical samples were tested, yielding 31 nucleic acid-positive samples (positivity rate: 24.4%). Five viral strains were isolated via cell culture. Results were as follows: Among them, four strains (e.g., HN78) were classified as FCV genotype Ⅰ, and one strain (HN77) as genotype Ⅱ. Electron microscopy revealed typical spherical, non-enveloped viral particles, and VP1 gene sequencing indicated 75.4%-75.65% homology among the strains. Animal challenge experiments confirmed that both genotype Ⅰ (HN78) and genotype Ⅱ (HN77) induced typical clinical symptoms, though pathogenic features differed between genotypes. This study provides the first systematic comparison of the biological characteristics of FCV genotypes Ⅰ and Ⅱ in China, offering critical viral strain resources and a theoretical foundation for vaccine development and clinical prevention strategies.

Key words: feline calicivirus (FCV), genetic characteristics, variations, isolated strains, gene sequencing

中图分类号: