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The Genetic Characterization of a Novel Natural Recombinant Pseudorabies Virus in China

We sequenced the complete genome of the pseudorabies virus (PRV) FJ epidemic strain, and we studied the characteristics and the differences compared with the classical Chinese strain and that of other countries. Third-generation sequencing and second-generation sequencing technology were used to con...

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Autores principales: Huang, Jianbo, Tang, Wenjie, Wang, Xvetao, Zhao, Jun, Peng, Kenan, Sun, Xiangang, Li, Shuwei, Kuang, Shengyao, Zhu, Ling, Zhou, Yuancheng, Xu, Zhiwen
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9146711/
https://www.ncbi.nlm.nih.gov/pubmed/35632721
http://dx.doi.org/10.3390/v14050978
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author Huang, Jianbo
Tang, Wenjie
Wang, Xvetao
Zhao, Jun
Peng, Kenan
Sun, Xiangang
Li, Shuwei
Kuang, Shengyao
Zhu, Ling
Zhou, Yuancheng
Xu, Zhiwen
author_facet Huang, Jianbo
Tang, Wenjie
Wang, Xvetao
Zhao, Jun
Peng, Kenan
Sun, Xiangang
Li, Shuwei
Kuang, Shengyao
Zhu, Ling
Zhou, Yuancheng
Xu, Zhiwen
author_sort Huang, Jianbo
collection PubMed
description We sequenced the complete genome of the pseudorabies virus (PRV) FJ epidemic strain, and we studied the characteristics and the differences compared with the classical Chinese strain and that of other countries. Third-generation sequencing and second-generation sequencing technology were used to construct, sequence, and annotate an efficient, accurate PRV library. The complete FJ genome was 143,703 bp, the G+C content was 73.67%, and it encoded a total of 70 genes. The genetic evolution of the complete genome and some key gene sequences of the FJ strain and PRV reference strains were analyzed by the maximum likelihood (ML) method of MEGA 7.0 software. According to the ML tree based on the full-length genome sequences, PRV FJ strain was assigned to the branch of genotype II, and it showed a close evolutionary relationship with PRV epidemic variants isolated in China after 2011. The gB, gC, gD, gH, gL, gM, gN, TK, gI, and PK genes of the FJ strain were assigned to the same branch with other Chinese epidemic mutants; its gG gene was assigned to the same branch with the classic Chinese Fa and Ea strains; and its gE gene was assigned to a relatively independent branch. Potential recombination events were predicted by the RDP4 software, which showed that the predicted recombination sites were between 1694 and 1936 bp, 101,113 and 102,660 bp, and 107,964 and 111,481 bp in the non-coding region. This result broke the previously reported general rule that pseudorabies virus recombination events occur in the gene coding region. The major backbone strain of the recombination event was HLJ8 and the minor backbone strain was Ea. Our results allowed us to track and to grasp the recent molecular epidemiological changes of PRV. They also provide background materials for the development of new PRV vaccines, and they lay a foundation for further study of PRV.
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spelling pubmed-91467112022-05-29 The Genetic Characterization of a Novel Natural Recombinant Pseudorabies Virus in China Huang, Jianbo Tang, Wenjie Wang, Xvetao Zhao, Jun Peng, Kenan Sun, Xiangang Li, Shuwei Kuang, Shengyao Zhu, Ling Zhou, Yuancheng Xu, Zhiwen Viruses Article We sequenced the complete genome of the pseudorabies virus (PRV) FJ epidemic strain, and we studied the characteristics and the differences compared with the classical Chinese strain and that of other countries. Third-generation sequencing and second-generation sequencing technology were used to construct, sequence, and annotate an efficient, accurate PRV library. The complete FJ genome was 143,703 bp, the G+C content was 73.67%, and it encoded a total of 70 genes. The genetic evolution of the complete genome and some key gene sequences of the FJ strain and PRV reference strains were analyzed by the maximum likelihood (ML) method of MEGA 7.0 software. According to the ML tree based on the full-length genome sequences, PRV FJ strain was assigned to the branch of genotype II, and it showed a close evolutionary relationship with PRV epidemic variants isolated in China after 2011. The gB, gC, gD, gH, gL, gM, gN, TK, gI, and PK genes of the FJ strain were assigned to the same branch with other Chinese epidemic mutants; its gG gene was assigned to the same branch with the classic Chinese Fa and Ea strains; and its gE gene was assigned to a relatively independent branch. Potential recombination events were predicted by the RDP4 software, which showed that the predicted recombination sites were between 1694 and 1936 bp, 101,113 and 102,660 bp, and 107,964 and 111,481 bp in the non-coding region. This result broke the previously reported general rule that pseudorabies virus recombination events occur in the gene coding region. The major backbone strain of the recombination event was HLJ8 and the minor backbone strain was Ea. Our results allowed us to track and to grasp the recent molecular epidemiological changes of PRV. They also provide background materials for the development of new PRV vaccines, and they lay a foundation for further study of PRV. MDPI 2022-05-06 /pmc/articles/PMC9146711/ /pubmed/35632721 http://dx.doi.org/10.3390/v14050978 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Huang, Jianbo
Tang, Wenjie
Wang, Xvetao
Zhao, Jun
Peng, Kenan
Sun, Xiangang
Li, Shuwei
Kuang, Shengyao
Zhu, Ling
Zhou, Yuancheng
Xu, Zhiwen
The Genetic Characterization of a Novel Natural Recombinant Pseudorabies Virus in China
title The Genetic Characterization of a Novel Natural Recombinant Pseudorabies Virus in China
title_full The Genetic Characterization of a Novel Natural Recombinant Pseudorabies Virus in China
title_fullStr The Genetic Characterization of a Novel Natural Recombinant Pseudorabies Virus in China
title_full_unstemmed The Genetic Characterization of a Novel Natural Recombinant Pseudorabies Virus in China
title_short The Genetic Characterization of a Novel Natural Recombinant Pseudorabies Virus in China
title_sort genetic characterization of a novel natural recombinant pseudorabies virus in china
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9146711/
https://www.ncbi.nlm.nih.gov/pubmed/35632721
http://dx.doi.org/10.3390/v14050978
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