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Guo J, Li C, Lu H, Wang B, Zhang L, Ding J, Jiao X, Li Q, Zhu S, Wang A, Li Y. Reverse genetics construction and pathogenicity of a novel recombinant NADC30-like PRRSV isolated in China. Front Vet Sci 2024; 11:1434539. [PMID: 38993278 PMCID: PMC11237873 DOI: 10.3389/fvets.2024.1434539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2024] [Accepted: 06/12/2024] [Indexed: 07/13/2024] Open
Abstract
China has the largest pig herd in the world which accounts for more than 50% of the global pig population. Over the past three decades, the porcine reproductive and respiratory syndrome virus (PRRSV) has caused significant economic loss to the Chinese swine industry. Currently, the prevalent PRRSV strains in the field are extremely complicated, and the NADC30-like strains, NADC34-like strains, and novel recombinant viruses have become a great concern to PRRS control in China. In this study, a novel NADC30-like PRRSV, named GS2022, was isolated from the lung of a dead pig collected from a farm that experienced a PRRS outbreak. The complete genome of GS2022 shares the highest identity with the NADC30 strain and contains a discontinuous deletion of 131 aa in nsp2. Novel deletion and insertion have been identified in ORF7 and 3'UTR. Recombination analysis revealed that the GS2022 is a potential recombinant of NADC30-like and JXA1-like strains. Both inter-lineage and intra-lineage recombination events were predicted to be involved in the generation of the GS2022. An infectious cDNA clone of GS2022 was assembled to generate the isogenic GS2022 (rGS2022). The growth kinetics of rGS2022 were almost identical to those of GS2022. The pathogenicity of the GS2022 and rGS2022 was evaluated using a nursery piglet model. In the infection groups, the piglets exhibited mild clinical symptoms, including short periods of fever and respiratory diseases. Both gross lesions and histopathological lesions were observed in the lungs and lymph nodes of the infected piglets. Therefore, we reported a novel recombinant NADC30-like PRRSV strain with moderate pathogenicity in piglets. These results provide new information on the genomic characteristics and pathogenicity of the NADC30-like PRRSV in China.
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Affiliation(s)
- Jinyao Guo
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
| | - Chenxi Li
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Comparative Medicine Research Institute, Yangzhou University, Yangzhou, Jiangsu, China
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, China
| | - Huipeng Lu
- Jiangsu Agri-animal Husbandry Vocational College, Jiangsu Key Laboratory for High-Tech Research and Development of Veterinary Biopharmaceuticals, Taizhou, China
| | - Bin Wang
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
| | - Linjie Zhang
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
| | - Jingjing Ding
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
| | - Xue Jiao
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
| | - Qingyu Li
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
| | - Shanyuan Zhu
- Jiangsu Agri-animal Husbandry Vocational College, Jiangsu Key Laboratory for High-Tech Research and Development of Veterinary Biopharmaceuticals, Taizhou, China
| | - Anping Wang
- Jiangsu Agri-animal Husbandry Vocational College, Jiangsu Key Laboratory for High-Tech Research and Development of Veterinary Biopharmaceuticals, Taizhou, China
| | - Yanhua Li
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Comparative Medicine Research Institute, Yangzhou University, Yangzhou, Jiangsu, China
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, China
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Liu X, Meng Y, He J, Jiang X, Zhang S, Wang D, Zhu Y, Zheng Z, Fan Y, Yin Y, Xiao S. Natural compound Sanggenon C inhibits porcine reproductive and respiratory syndrome virus replication in piglets. Vet Microbiol 2024; 290:109991. [PMID: 38228078 DOI: 10.1016/j.vetmic.2024.109991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 01/08/2024] [Accepted: 01/10/2024] [Indexed: 01/18/2024]
Abstract
Porcine reproductive and respiratory syndrome virus is one of the main pathogens threatening the global pig industry, and there is still a lack of effective therapeutic drugs. Sanggenon C is a flavanone Diels-Alder adduct compound extracted from the root bark of the mulberry genus, which has blood pressure-reducing, anti-atherosclerotic, anti-oxidative, and anti-inflammatory effects. In our previous study, Sanggenon C was confirmed to significantly inhibit PRRSV replication in vitro. However, its antiviral potential to inhibit PRRSV infection in vivo has not been evaluated in piglets. Here, the antiviral effect of Sanggenon C was evaluated in PRRSV-challenged piglets based on assessments of rectal temperature, viral load, pathological changes of lung tissue and secretion of inflammatory cytokines. The results showed that Sanggenon C treatment relieved the clinical symptoms, reduced the viral loads in the lungs and bloods, alleviated the pathological damage of lung tissue, decreased the secretion of inflammatory cytokines, and shorten the excretion time of virus from the oral and nasal secretions and feces of piglets after PRRSV infection. The results indicated that Sanggenon C is a promising anti-PRRSV drug, which provides a new strategy for the prevention and control of PRRS in clinical practice.
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Affiliation(s)
- Xiao Liu
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China; State Key Laboratory for Animal Disease Control and Prevention, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, College of Veterinary Medicine, Lanzhou University, Lanzhou 730046, Gansu, China
| | - Yinan Meng
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Jianyu He
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Xuelian Jiang
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Shuangquan Zhang
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Dan Wang
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Yanan Zhu
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Zifang Zheng
- State Key Laboratory for Animal Disease Control and Prevention, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, College of Veterinary Medicine, Lanzhou University, Lanzhou 730046, Gansu, China
| | - Yunpeng Fan
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Yupeng Yin
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, China.
| | - Shuqi Xiao
- State Key Laboratory for Animal Disease Control and Prevention, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, College of Veterinary Medicine, Lanzhou University, Lanzhou 730046, Gansu, China.
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Li H, Luo Q, Jing H, Song Y, Kong W, Zhao M, Zhu Q. Research Progress on Porcine Reproductive and Respiratory Syndrome Virus NSP7 Protein. Animals (Basel) 2023; 13:2269. [PMID: 37508047 PMCID: PMC10376100 DOI: 10.3390/ani13142269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 07/03/2023] [Accepted: 07/07/2023] [Indexed: 07/30/2023] Open
Abstract
Porcine reproductive and respiratory syndrome (PRRS) is a highly contagious and severe infectious disease caused by the PRRS virus (PRRSV). PRRS is characterized by reproductive disorders in sows and respiratory dysfunction in pigs. Non-structural protein 7 (NSP7) is one of the most conserved functional proteins in PRRSV, and it plays an important role in viral replication and humoral immune responses in infected hosts. This review discusses the biological characteristics of NSP7 to provide theoretical support for its application in PRRS diagnosis, novel vaccine design, and therapeutic drug development.
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Affiliation(s)
- Huawei Li
- College of Food and Bioengineering, Henan University of Animal Husbandry and Economy, Zhengzhou 450047, China
| | - Qin Luo
- Department of Veterinary Medicine, School of Life Science and Engineering, Foshan University, Foshan 528000, China
| | - Huiyuan Jing
- College of Veterinary Medicine, Henan University of Animal Husbandry and Economy, Zhengzhou 450047, China
| | - Yuzhen Song
- College of Veterinary Medicine, Henan University of Animal Husbandry and Economy, Zhengzhou 450047, China
| | - Weili Kong
- Gladstone Institutes of Virology and Immunology, University of California, San Francisco, CA 94158, USA
| | - Mengmeng Zhao
- Department of Veterinary Medicine, School of Life Science and Engineering, Foshan University, Foshan 528000, China
| | - Qingge Zhu
- Department of Veterinary Medicine, School of Life Science and Engineering, Foshan University, Foshan 528000, China
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Li W, Li C, Guo Z, Xu H, Gong B, Sun Q, Zhao J, Xiang L, Leng C, Peng J, Zhou G, Tang Y, Liu H, An T, Cai XH, Tian ZJ, Wang Q, Zhang H. Genomic characteristics of a novel emerging PRRSV branch in sublineage 8.7 in China. Front Microbiol 2023; 14:1186322. [PMID: 37323894 PMCID: PMC10264644 DOI: 10.3389/fmicb.2023.1186322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 05/15/2023] [Indexed: 06/17/2023] Open
Abstract
Porcine reproductive and respiratory syndrome virus (PRRSV) has caused serious economic losses to the pig industry worldwide. During the continuous monitoring of PRRSV, a new PRRSV strain type with novel characteristics was first identified in three different regions of Shandong Province. These strains presented a novel deletion pattern (1 + 8 + 1) in the NSP2 region and belonged to a new branch in sublineage 8.7 based on the ORF5 gene phylogenetic tree. To further study the genomic characteristics of the new-branch PRRSV, we selected a sample from each of the three farms for whole-genome sequencing and sequence analysis. Based on the phylogenetic analysis of the whole genome, these strains formed a new independent branch in sublineage 8.7, which showed a close relationship with HP-PRRSV and intermediate PRRSV according to nucleotide and amino acid homology but displayed a completely different deletion pattern in NSP2. Recombinant analysis showed that these strains presented similar recombination patterns, all of which involved recombination with QYYZ in the ORF3 region. Furthermore, we found that the new-branch PRRSV retained highly consistent nucleotides at positions 117-120 (AGTA) of a quite conserved motif in the 3'-UTR; showed similar deletion patterns in the 5'-UTR, 3'-UTR and NSP2; retained characteristics consistent with intermediate PRRSV and exhibited a gradual evolution trend. The above results showed that the new-branch PRRSV strains may have the same origin and be similar to HP-PPRSV also evolved from intermediate PRRSV, but are distinct strains that evolved simultaneously with HP-PRRSV. They persist in some parts of China through rapid evolution, recombine with other strains and have the potential to become epidemic strains. The monitoring and biological characteristics of these strains should be further studied.
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Affiliation(s)
- Wansheng Li
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Chao Li
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Zhenyang Guo
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Hu Xu
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Bangjun Gong
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Qi Sun
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Jing Zhao
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Lirun Xiang
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Chaoliang Leng
- Henan Key Laboratory of Insect Biology in Funiu Mountain, Henan Provincial Engineering Laboratory of Insects Bio-Reactor, China-UK-NYNU-RRes Joint Laboratory of Insect Biology, Nanyang Normal University, Nanyang, China
| | - Jinmei Peng
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Guohui Zhou
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Yandong Tang
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Huairan Liu
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Tongqing An
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Xue-Hui Cai
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Zhi-Jun Tian
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Qian Wang
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Hongliang Zhang
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
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Special Issue "State-of-the-Art Porcine Virus Research in China". Viruses 2023; 15:v15020412. [PMID: 36851626 PMCID: PMC9964372 DOI: 10.3390/v15020412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 01/23/2023] [Accepted: 01/29/2023] [Indexed: 02/04/2023] Open
Abstract
China is one of the major countries involved in pig production and pork consumption [...].
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Jiang C, Xu Z, Li J, Zhang J, Xue X, Jiang J, Jiang G, Wang X, Peng Y, Chen T, Liu Z, Xie L, Gao H, Liu Y, Yang Y. Case report: Clinical and virological characteristics of aseptic meningitis caused by a recombinant echovirus 18 in an immunocompetent adult. Front Med (Lausanne) 2023; 9:1094347. [PMID: 36714132 PMCID: PMC9878155 DOI: 10.3389/fmed.2022.1094347] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Accepted: 12/14/2022] [Indexed: 01/13/2023] Open
Abstract
Echovirus 18 has been recognized as an important causative pathogen of aseptic meningitis in young children worldwide, and echovirus 18-induced meningitis is rarely found in adults with immunocompetence. In this case study, we report the clinical and virological characteristics of aseptic meningitis caused by recombinant echovirus 18 in an adult with immunocompetence. A 31-year-old woman with immunocompetence was admitted to our hospital with fever, dizziness, severe headache, nausea, and vomiting for the past 1 day and was diagnosed with viral meningitis based on the clinical manifestations and laboratory results from cerebrospinal fluid (CSF). The patient received antiviral treatment with ribavirin and interferon as soon as the enterovirus infection was identified using qRT-PCR and was cured after 4 days. From the oropharyngeal swab and CSF samples, two echovirus 18 strains were isolated with a single nucleotide difference located at the 5' UTR. Phylogenetic analyses based on the VP1 gene showed that the two strains belonged to the subgenotype C2 and were clustered with sequences obtained from China after 2015, while the results from the 3D polymerase region showed that the two strains were closely related to the E30 strains. Bootscanning results using the 5' UTR to 2A region and the 2B to 3' UTR region showed that potential intertypic recombination had occurred in the 2B gene. Recombination analyses further confirmed that the two strains (echovirus 18) presented genome recombination with echovirus 30 in the nucleotide regions of the 2B gene. To the best of our knowledge, this is the first report of echovirus 18-induced meningitis in an adult with immunocompetence from mainland China, highlighting the need for close surveillance of echovirus 18 both in children and adults in the future.
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Affiliation(s)
- Chunmei Jiang
- Department of Infectious Disease, The People’s Hospital of Longhua, Shenzhen, China
| | - Zhixiang Xu
- Shenzhen Key Laboratory of Pathogen and Immunity, State Key Discipline of Infectious Disease, Shenzhen Third People’s Hospital, Second Hospital Affiliated to Southern University of Science and Technology, Shenzhen, China
| | - Jin Li
- Shenzhen Polytechnic, Shenzhen, China
| | - Jiaqi Zhang
- Shenzhen Key Laboratory of Pathogen and Immunity, State Key Discipline of Infectious Disease, Shenzhen Third People’s Hospital, Second Hospital Affiliated to Southern University of Science and Technology, Shenzhen, China
| | - Xingkui Xue
- Department of Infectious Disease, The People’s Hospital of Longhua, Shenzhen, China
| | - Jingxia Jiang
- Department of Infectious Disease, The People’s Hospital of Longhua, Shenzhen, China
| | - Guihua Jiang
- Department of Infectious Disease, The People’s Hospital of Longhua, Shenzhen, China
| | - Xisheng Wang
- Department of Infectious Disease, The People’s Hospital of Longhua, Shenzhen, China
| | - Yun Peng
- Shenzhen Key Laboratory of Pathogen and Immunity, State Key Discipline of Infectious Disease, Shenzhen Third People’s Hospital, Second Hospital Affiliated to Southern University of Science and Technology, Shenzhen, China
| | - Tian Chen
- Department of Infectious Disease, The People’s Hospital of Longhua, Shenzhen, China
| | - Zhenzhen Liu
- Department of Infectious Disease, The People’s Hospital of Longhua, Shenzhen, China
| | - Liu Xie
- Department of Infectious Disease, The People’s Hospital of Longhua, Shenzhen, China
| | - Haibin Gao
- Department of Infectious Disease, The People’s Hospital of Longhua, Shenzhen, China,Haibin Gao,
| | - Yingxia Liu
- Shenzhen Key Laboratory of Pathogen and Immunity, State Key Discipline of Infectious Disease, Shenzhen Third People’s Hospital, Second Hospital Affiliated to Southern University of Science and Technology, Shenzhen, China,Yingxia Liu,
| | - Yang Yang
- Shenzhen Key Laboratory of Pathogen and Immunity, State Key Discipline of Infectious Disease, Shenzhen Third People’s Hospital, Second Hospital Affiliated to Southern University of Science and Technology, Shenzhen, China,*Correspondence: Yang Yang,
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