河南农业科学 ›› 2021, Vol. 50 ›› Issue (6): 125-133.DOI: 10.15933/j.cnki.1004-3268.2021.06.015

• 畜牧·兽医 • 上一篇    下一篇

猪A组轮状病毒HN2019-01株的分离鉴定及VP6基因序列分析

黄正阳1,陈宇婧1,黄克1,冷超粮1,2,3,刘阳坤1,2,3,姚伦广1,2,3,李娜1,2,3   

  1. 1.南阳师范学院 生命科学与农业工程学院,河南 南阳 473061;2.河南省畜禽保健品工程技术研究中心,河南 南阳 473061;3.河南省动物疫病诊断与综合防控工程技术研究中心,河南 南阳 473061)
  • 收稿日期:2020-11-26 出版日期:2021-06-15 发布日期:2021-06-15
  • 通讯作者: 李娜(1983-),女,河南南阳人,讲师,博士,主要从事基因工程疫苗与动物疾病诊断研究。E-mail:lina330077@163.com
  • 作者简介:黄正阳(1995-),男,河南南阳人,在读硕士研究生,研究方向:基因工程疫苗与动物疾病诊断。E-mail:15090135771@163.com
  • 基金资助:
    国家自然科学基金面上项目(31870917);国家自然科学基金项目(32002302);河南省高等学校重点科研项目(18A230011);河南省科技攻关项目(182102310077);河南省“疫苗工程”高校科技创新团队项目(20IRTSTHN024);南阳师范学院高层次人才启动专项(2018ZX011)

Isolation and VP6 Gene Sequence Analysis of Porcine Group A Rotavirus HN2019-01 Strain

HUANG Zhengyang1,CHEN Yujing1,HUANG Ke1,LENG Chaoliang1,2,3,LIU Yangkun1,2,3,YAO Lunguang1,2,3,LI Na1,2,3   

  1. (1.School of Life Science and Agricultural Engineering,Nanyang Normal University,Nanyang 473061,China;2.Henan Provincial Engineering and Technology Center of Health Products for Livestock and Poultry,Nanyang 473061,China;3.Henan Provincial Engineering and Technology Center of Animal Disease Diagnosis and Integrated Control,Nanyang 473061,China)
  • Received:2020-11-26 Published:2021-06-15 Online:2021-06-15

摘要: 为了解猪轮状病毒(RV)在河南省的流行情况及其分子遗传特征,利用反转录PCR方法,从河南某猪场腹泻样品中扩增得到RV特异性核酸片段,并将腹泻样品利用MA-104细胞进行RV的分离和传代,将分离得到的RV命名为RVA/Pig-wt/HN2019-01。对分离毒株VP6基因片段的序列测定及生物信息学分析结果表明,分离毒株VP6核苷酸序列与猪源毒株西南株-1C(SWU-1C)相似性最高,病毒分类上同属I5亚群。VP6蛋白全长397个氨基酸,存在4个N糖基化位点和18个潜在磷酸化位点,二级结构主要由α-螺旋组成,三级空间结构与牛轮状病毒RF株VP6蛋白高度相似,且在2个细胞毒性T淋巴细胞(CTL)抗原表位区域的氨基酸序列保守。

关键词: 轮状病毒, 组轮状病毒, 病毒分离, VP6基因, 序列分析

Abstract: To investigate the prevalence and molecular genetic characteristics of porcine rotaviruses(RV) in Henan,the positive diarrheal stool samples of RV from a pig farm were examined using reverse transcription-polymerase chain reaction (RT-PCR).A novel strain of RV,RVA/ Pig-wt/ HN2019-01,was isolated and passaged by MA-104 cells.VP6 gene amplification and bioinformatics analysis were performed to further characterize the RV isolated strain at the molecular level.As the result of VP6 gene amplification and sequence analysis,the RVA/ Pig-wt/ HN2019-01 showed the highest nucleotide identity with the previously reported porcine RV SWU-1C strain,which both were clustered to the I5 subgroup.The VP6 protein composed of 397 amino acids in length,possessing 4 N-glycosylation and 18 potential phosphorylation sites. Secondary structure of VP6 protein was found to be mainly alpha helix-based,and the spatial structure was highly similar to the VP6 of bovine rotavirus RF strain.Two cytotoxic T lymphocyte (CTL) epitopes regions of rotavirus VP6 were conserved among different strains.

Key words: Rotavirus(RV), RVA, Virus isolation, VP6 gene, Sequence analysis

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