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Research Progress on Glycoprotein 5 of Porcine Reproductive and Respiratory Syndrome Virus. Animals (Basel) 2023; 13:ani13050813. [PMID: 36899670 PMCID: PMC10000246 DOI: 10.3390/ani13050813] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 02/14/2023] [Accepted: 02/20/2023] [Indexed: 02/26/2023] Open
Abstract
Porcine reproductive and respiratory syndrome (PRRS) is an acute, febrile, and highly contagious disease caused by the porcine reproductive and respiratory syndrome virus (PRRSV). Glycoprotein 5 (GP5) is a glycosylated envelope protein encoded by the PRRSV ORF5, which has good immunogenicity and can induce the body to produce neutralizing antibodies. Therefore, study of GP5 protein is of great significance in the diagnosis, prevention, and control of PRRSV and the development of new vaccines. We reviewed GP5 protein genetic variation, immune function, interaction with viral protein and host proteins, induction of cell apoptosis, and stimulation of neutralizing antibodies. GP5 protein's influence on virus replication and virulence, as well as its use as a target for viral detection and immunization are reviewed.
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Zhou L, Yang Y, Xia Q, Guan Z, Zhang J, Li B, Qiu Y, Liu K, Shao D, Ma Z, Wang X, Wei J. Genetic characterization of porcine reproductive and respiratory syndrome virus from Eastern China during 2017-2022. Front Microbiol 2022; 13:971817. [PMID: 36312912 PMCID: PMC9606797 DOI: 10.3389/fmicb.2022.971817] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Accepted: 09/21/2022] [Indexed: 07/30/2023] Open
Abstract
Porcine reproductive and respiratory syndrome (PRRS) is an immunosuppressive disease caused by PRSS virus (PRRSV). PRRSV mainly causes reproductive disorders in pregnant sows and respiratory diseases in piglets. Recently, it has emerged as one of the most important diseases of the pig industry across the globe. In this study, we have collected 231 samples from differently sized pig farms in Eastern China from 2017 to 2022 to investigate the epidemic characteristics of the disease. All samples were screened by RT-PCR and analyzed further using Nsp2 and ORF5 genes. The result showed that the positive rate of PRRSV was 24% (54/231). Phylogenetic analysis (13 positive samples) revealed that all isolates belonged to genotype 2, and they were mainly distributed in four lineages (i.e., lineage 1, 3, 5, and 8). Nsp2 is the most variable protein among all PRRSV NSPs, several isolates from this study had amino acid deletions within Nsp2 compared to that of strain VR-2332. The major structural protein glycoprotein (GP5) protein is encoded by ORF5. Epitope analysis of the 13 isolated strains and additional reference strains revealed that all 13 strains had some mutations on the decoy epitope, the primary neutralizing epitope, T cell epitopes, and B cell epitopes. This study showed that the prevalent PRRSV strain in Eastern China was still HP-PRRSV, while the proportion of NADC30-like and NADC34-like strains have increased. This study further enriches the epidemiological data of PRRS in Eastern China and provides a theoretical basis for vaccine development and prevention and control of the disease across the region.
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Affiliation(s)
- Lujia Zhou
- College of Animal Science and Technology and College of Veterinary Medicine of Zhejiang A&F University, Hangzhou, Zhejiang, China
- Chinese Academy of Agricultural Sciences, Shanghai Veterinary Research Institute, Shanghai, China
| | - Yang Yang
- Chinese Academy of Agricultural Sciences, Shanghai Veterinary Research Institute, Shanghai, China
| | - Qiqi Xia
- Chinese Academy of Agricultural Sciences, Shanghai Veterinary Research Institute, Shanghai, China
| | - Zhixin Guan
- Chinese Academy of Agricultural Sciences, Shanghai Veterinary Research Institute, Shanghai, China
| | - Junjie Zhang
- Chinese Academy of Agricultural Sciences, Shanghai Veterinary Research Institute, Shanghai, China
| | - Beibei Li
- Chinese Academy of Agricultural Sciences, Shanghai Veterinary Research Institute, Shanghai, China
| | - Yafeng Qiu
- Chinese Academy of Agricultural Sciences, Shanghai Veterinary Research Institute, Shanghai, China
| | - Ke Liu
- Chinese Academy of Agricultural Sciences, Shanghai Veterinary Research Institute, Shanghai, China
| | - Donghua Shao
- Chinese Academy of Agricultural Sciences, Shanghai Veterinary Research Institute, Shanghai, China
| | - Zhiyong Ma
- Chinese Academy of Agricultural Sciences, Shanghai Veterinary Research Institute, Shanghai, China
| | - Xiaodu Wang
- College of Animal Science and Technology and College of Veterinary Medicine of Zhejiang A&F University, Hangzhou, Zhejiang, China
| | - Jianchao Wei
- Chinese Academy of Agricultural Sciences, Shanghai Veterinary Research Institute, Shanghai, China
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