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Adel A, Zanaty A, Mosaad Z, Selim K, Hagag NM, Badr M, Ellakany H, Shahien M, Samy A. Advancing IBDV diagnostics: a one-step multiplex real-time qRT-PCR for discriminating between vvIBDV and non-vvIBDV viruses, including the newly emerged IBDV variant. Front Vet Sci 2024; 11:1421153. [PMID: 39091391 PMCID: PMC11293503 DOI: 10.3389/fvets.2024.1421153] [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: 04/21/2024] [Accepted: 06/21/2024] [Indexed: 08/04/2024] Open
Abstract
The very virulent infectious bursal disease virus (vvIBDV) induces an acute, highly contagious and immunosuppressive disease in younger chicken causing massive economic losses globally. A major challenge in the field's clinical diagnosis is distinguishing gross lesions caused by vvIBDV from those induced by classic IBDV (cIBDV), commonly used as live attenuated vaccines. This study introduces a one-step multiplex real-time PCR assay designed to distinguish between vvIBDV and non-vvIBDV viruses. Via simultaneously targeting the VP2 sequence for vvIBDV detection and the VP1 sequence for non-vvIBDV identification, including classic, American variant and the recently emerged novel variant IBDV (nvarIBDV), the assay's specificity was validated against common avian viral diseases and nonspecific IBDV strains without any observed cross-reactions. It effectively differentiated between vvIBDV and non-vvIBDV field samples, including nvarIBDV, as confirmed by genotyping based on VP2 sequencing. The assay demonstrated a limit of detection ranging from 1.9×1010 to 103 DNA copies for vvIBDV-VP2, 9.2×1010 to 103 DNA copies for classic strains, and 1.2×1011 to 104 DNA copies for nvarIBDV in VP1 detection of non-vvIBDV. In conclusion, this study presents a specific, sensitive, and straight forward multiplex real-time PCR assay.
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Affiliation(s)
- Amany Adel
- Reference Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Agriculture Research Center (ARC), Dokki, Giza, Egypt
| | - Ali Zanaty
- Reference Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Agriculture Research Center (ARC), Dokki, Giza, Egypt
| | - Zienab Mosaad
- Reference Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Agriculture Research Center (ARC), Dokki, Giza, Egypt
| | - Karim Selim
- Reference Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Agriculture Research Center (ARC), Dokki, Giza, Egypt
| | - Naglaa M. Hagag
- Reference Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Agriculture Research Center (ARC), Dokki, Giza, Egypt
| | - Mona Badr
- Poultry and Fish Diseases Department faculty of Veterinary Medicine, Damanhour University, Damanhur, Egypt
| | - Hany Ellakany
- Poultry and Fish Diseases Department faculty of Veterinary Medicine, Damanhour University, Damanhur, Egypt
| | - Momtaz Shahien
- Reference Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Agriculture Research Center (ARC), Dokki, Giza, Egypt
| | - Ahmed Samy
- Reference Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Agriculture Research Center (ARC), Dokki, Giza, Egypt
- Infectious bursal disease virus group, the Pirbright Institute, Surrey, United Kingdom
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2
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Gao H, Zhang S, Chang H, Guo Y, Li Z, Wang Y, Gao L, Li X, Cao H, Zheng SJ. Generation of a novel attenuated IBDV vaccine strain by mutation of critical amino acids in IBDV VP5. Vaccine 2024:S0264-410X(24)00723-0. [PMID: 38944579 DOI: 10.1016/j.vaccine.2024.06.048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2024] [Revised: 05/22/2024] [Accepted: 06/17/2024] [Indexed: 07/01/2024]
Abstract
Infectious bursal disease virus (IBDV) is an acute and highly infectious RNA virus known for its immunosuppressive capabilities, chiefly inflicting rapid damage to the bursa of Fabricius (BF) of chickens. Current clinical control of IBDV infection relies on vaccination. However, the emergence of novel variant IBDV (nVarIBDV) has posed a threat to the poultry industry across the globe, underscoring the great demand for innovative and effective vaccines. Our previous studies have highlighted the critical role of IBDV VP5 as an apoptosis-inducer in host cells. In this study, we engineered IBDV mutants via a reverse genetic system to introduce amino acid mutations in VP5. We found that the mutant IBDV-VP5/3m strain caused reduced host cell mortality, and that strategic mutations in VP5 reduced IBDV replication early after infection, thereby delaying cell death. Furthermore, inoculation of chickens with IBDV-VP5/3m effectively reduced damage to BF and induced neutralizing antibody production comparable to that of parental IBDV WT strain. Importantly, vaccination with IBDV-VP5/3m protected chickens against challenges with nVarIBDV, an emerging IBDV variant strain in China, reducing nVarIBDV loads in BF while alleviating bursal atrophy and splenomegaly, suggesting that IBDV-VP5/3m might serve as a novel vaccine candidate that could be further developed as an effective vaccine for clinical control of IBD. This study provides a new clue to the development of novel and effective vaccines.
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Affiliation(s)
- Hui Gao
- National Key Laboratory of Veterinary Public Health Security, Beijing 100193, China; Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, Beijing 100193, China; College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Shujun Zhang
- National Key Laboratory of Veterinary Public Health Security, Beijing 100193, China; Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, Beijing 100193, China; College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - He Chang
- National Key Laboratory of Veterinary Public Health Security, Beijing 100193, China; Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, Beijing 100193, China; College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Yuxin Guo
- National Key Laboratory of Veterinary Public Health Security, Beijing 100193, China; Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, Beijing 100193, China; College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Zhonghua Li
- National Key Laboratory of Veterinary Public Health Security, Beijing 100193, China; Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, Beijing 100193, China; College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Yongqiang Wang
- National Key Laboratory of Veterinary Public Health Security, Beijing 100193, China; Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, Beijing 100193, China; College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Li Gao
- National Key Laboratory of Veterinary Public Health Security, Beijing 100193, China; Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, Beijing 100193, China; College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Xiaoqi Li
- National Key Laboratory of Veterinary Public Health Security, Beijing 100193, China; Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, Beijing 100193, China; College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Hong Cao
- National Key Laboratory of Veterinary Public Health Security, Beijing 100193, China; Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, Beijing 100193, China; College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Shijun J Zheng
- National Key Laboratory of Veterinary Public Health Security, Beijing 100193, China; Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, Beijing 100193, China; College of Veterinary Medicine, China Agricultural University, Beijing 100193, China.
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3
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Tomás G, Techera C, Marandino A, Olivera V, Williman J, Panzera Y, Pérez R, Vagnozzi A. Genomic characterization of infectious bursal disease virus in Argentina provides evidence of the recent transcontinental spread of Chinese genotype A2dB1b. Avian Pathol 2024:1-9. [PMID: 38742448 DOI: 10.1080/03079457.2024.2355918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2024] [Accepted: 05/10/2024] [Indexed: 05/16/2024]
Abstract
The infectious bursal disease virus (IBDV) is a significant pathogen affecting the poultry industry worldwide. Its epidemiological history has been marked by the emergence of strains with different antigenic, pathogenic, and genetic features, some of which have shown notable spread potential. The A2dB1b genotype, also known as novel variant, has become widespread and gained increased relevance in IBDV epidemiology. This genotype was described in China in the 2010s and rapidly spread in Asia and Africa. The present study describes the circulation of the A2dB1b genotype in Argentina. Applying a next-generation sequencing approach, we obtained the complete coding sequence of 18 Argentine viruses. The high level of genomic homogeneity observed amongst these viruses, their monophyletic clustering in both partial and complete segments A and B derived phylogenies, and their close relatedness to some Chinese strains suggest that a unique transcontinental spread event from China to Argentina occurred recently. The apparent success of the A2dB1b genotype spreading throughout Asia, Africa, and South America may partially be due to specific amino acid characteristics. Novel residues in the hypervariable region of VP2 may help A2dB1b IBDVs evade the protection elicited by the applied commercial vaccines. Our findings underscore the importance of continuous characterization of field samples and evaluation of the control measures currently applied to fight against this specific IBDV genotype.
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Affiliation(s)
- Gonzalo Tomás
- Sección Genética Evolutiva, Departamento de Biología Animal, Facultad de Ciencias, Instituto de Biología, Universidad de la República, Montevideo, Uruguay
| | - Claudia Techera
- Sección Genética Evolutiva, Departamento de Biología Animal, Facultad de Ciencias, Instituto de Biología, Universidad de la República, Montevideo, Uruguay
| | - Ana Marandino
- Sección Genética Evolutiva, Departamento de Biología Animal, Facultad de Ciencias, Instituto de Biología, Universidad de la República, Montevideo, Uruguay
| | - Valeria Olivera
- Laboratorio de Aves, Instituto de Virología e Innovación Tecnológica, Centro de Investigaciones en Ciencias Veterinarias y Agronómicas, Instituto Nacional de Tecnología Agropecuaria (INTA) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Joaquín Williman
- Sección Genética Evolutiva, Departamento de Biología Animal, Facultad de Ciencias, Instituto de Biología, Universidad de la República, Montevideo, Uruguay
| | - Yanina Panzera
- Sección Genética Evolutiva, Departamento de Biología Animal, Facultad de Ciencias, Instituto de Biología, Universidad de la República, Montevideo, Uruguay
| | - Ruben Pérez
- Sección Genética Evolutiva, Departamento de Biología Animal, Facultad de Ciencias, Instituto de Biología, Universidad de la República, Montevideo, Uruguay
| | - Ariel Vagnozzi
- Laboratorio de Aves, Instituto de Virología e Innovación Tecnológica, Centro de Investigaciones en Ciencias Veterinarias y Agronómicas, Instituto Nacional de Tecnología Agropecuaria (INTA) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
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4
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Wang G, Jiang N, Yu H, Niu X, Huang M, Zhang Y, Zhang W, Han J, Xu M, Liu R, Wu Z, Han J, Wang S, Gao L, Cui H, Zhang Y, Chen Y, Gao Y, Qi X. Loop P DE of viral capsid protein is involved in immune escape of the emerging novel variant infectious bursal disease virus. Vet Microbiol 2024; 293:110094. [PMID: 38636175 DOI: 10.1016/j.vetmic.2024.110094] [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: 02/27/2024] [Revised: 04/06/2024] [Accepted: 04/14/2024] [Indexed: 04/20/2024]
Abstract
Infectious bursa disease (IBD) is an acute, highly contactable, lethal, immunosuppressive infectious disease caused by the Infectious bursa disease virus (IBDV). Currently, the emerged novel variant IBDV (nVarIBDV) and the sustainedly prevalent very virulent IBDV (vvIBDV) are the two most prevalent strains of IBDV in China. The antigenic properties of the two prevalent strains differed significantly, which led to the escape of nVarIBDV from the immune protection provided by the existing vvIBDV vaccine. However, the molecular basis of the nVarIBDV immune escape remains unclear. In this study, we demonstrated, for the first time, that residues 252, 254, and 256 in the PDE of VP2 are involved in the immune escape of the emerging nVarIBDV. Firstly, the IFA-mediated antigen-antibody affinity assay showed that PBC and PDE of VP2 could affect the affinity of vvIBDV antiserum to VP2, of which PDE was more significant. The key amino acids of PDE influencing the antigen-antibody affinity were also identified, with G254N being the most significant, followed by V252I and I256V. Then the mutated virus with point or combined mutations was rescued by reverse genetics. it was further demonstrated that mutations of V252I, G254N, and I256V in PDE could individually or collaboratively reduce antigen-antibody affinity and interfere with antiserum neutralization, with G254N being the most significant. This study revealed the reasons for the widespread prevalence of nVarIBDV in immunized chicken flocks and provided innovative ideas for designing novel vaccines that match the antigen of the epidemic strain.
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Affiliation(s)
- Guodong Wang
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin 150069, PR China; World Organization for Animal Health (WOAH) Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin 150069, PR China
| | - Nan Jiang
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin 150069, PR China; World Organization for Animal Health (WOAH) Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin 150069, PR China
| | - Hangbo Yu
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin 150069, PR China; World Organization for Animal Health (WOAH) Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin 150069, PR China
| | - Xinxin Niu
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin 150069, PR China; World Organization for Animal Health (WOAH) Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin 150069, PR China
| | - Mengmeng Huang
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin 150069, PR China; World Organization for Animal Health (WOAH) Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin 150069, PR China
| | - Yulong Zhang
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin 150069, PR China; World Organization for Animal Health (WOAH) Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin 150069, PR China
| | - Wenying Zhang
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin 150069, PR China; World Organization for Animal Health (WOAH) Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin 150069, PR China
| | - Jinze Han
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin 150069, PR China; World Organization for Animal Health (WOAH) Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin 150069, PR China
| | - Mengmeng Xu
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin 150069, PR China; World Organization for Animal Health (WOAH) Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin 150069, PR China
| | - Runhang Liu
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin 150069, PR China; World Organization for Animal Health (WOAH) Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin 150069, PR China
| | - Ziwen Wu
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin 150069, PR China; World Organization for Animal Health (WOAH) Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin 150069, PR China
| | - Jingzhe Han
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin 150069, PR China; World Organization for Animal Health (WOAH) Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin 150069, PR China
| | - Suyan Wang
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin 150069, PR China; World Organization for Animal Health (WOAH) Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin 150069, PR China
| | - Li Gao
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin 150069, PR China; World Organization for Animal Health (WOAH) Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin 150069, PR China
| | - Hongyu Cui
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin 150069, PR China
| | - Yanping Zhang
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin 150069, PR China
| | - Yuntong Chen
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin 150069, PR China
| | - Yulong Gao
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin 150069, PR China; World Organization for Animal Health (WOAH) Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin 150069, PR China.
| | - Xiaole Qi
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin 150069, PR China; World Organization for Animal Health (WOAH) Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin 150069, PR China.
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5
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Shahein MA, Sultan HA, Zanaty A, Adel A, Mosaad Z, Said D, Erfan A, Samy M, Selim A, Selim K, Naguib MM, Hassan H, Shazly OE, El-Badiea ZA, Moawad MK, Samir A, Shahaby ME, Farghaly E, Eid S, Abdelaziz MN, Hamoud MM, Mehana O, Hagag NM, Samy A. Emergence of the novel infectious bursal disease virus variant in vaccinated poultry flocks in Egypt. Avian Pathol 2024:1-11. [PMID: 38784976 DOI: 10.1080/03079457.2024.2348513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2023] [Accepted: 04/21/2024] [Indexed: 05/25/2024]
Abstract
RESEARCH HIGHLIGHTS New variant IBDV which emerged in Egypt clustered with Chinese nVarIBDV.nVarIBDV spread subclinically across a wide geographic area.Mutation at 321 represents capsid's most exposed part, a defining feature.Antigenically modified vvIBDV still circulating in Egypt with typical lesions.
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Affiliation(s)
- Momtaz A Shahein
- Reference Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Agriculture Research Center (ARC), Giza, Egypt
| | - Hesham A Sultan
- Department of Birds and Rabbits Medicine, Faculty of Veterinary Medicine, University of Sadat City, Menoufiya, Egypt
| | - Ali Zanaty
- Reference Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Agriculture Research Center (ARC), Giza, Egypt
| | - Amany Adel
- Reference Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Agriculture Research Center (ARC), Giza, Egypt
| | - Zienab Mosaad
- Reference Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Agriculture Research Center (ARC), Giza, Egypt
| | - Dalia Said
- Reference Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Agriculture Research Center (ARC), Giza, Egypt
| | - Ahmed Erfan
- Reference Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Agriculture Research Center (ARC), Giza, Egypt
| | - Mohamed Samy
- Reference Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Agriculture Research Center (ARC), Giza, Egypt
| | - Abdullah Selim
- Reference Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Agriculture Research Center (ARC), Giza, Egypt
| | - Karim Selim
- Reference Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Agriculture Research Center (ARC), Giza, Egypt
| | - Mahmoud M Naguib
- Reference Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Agriculture Research Center (ARC), Giza, Egypt
- Zoonosis Science Center, Department of Medical Biochemistry and Microbiology, Uppsala University Uppsala, Sweden
| | - Heba Hassan
- Reference Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Agriculture Research Center (ARC), Giza, Egypt
| | - Osama El Shazly
- Reference Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Agriculture Research Center (ARC), Giza, Egypt
| | - Zeinab A El-Badiea
- Reference Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Agriculture Research Center (ARC), Giza, Egypt
| | - Mahmoud K Moawad
- Reference Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Agriculture Research Center (ARC), Giza, Egypt
| | - Abdelhafez Samir
- Reference Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Agriculture Research Center (ARC), Giza, Egypt
| | | | - Eman Farghaly
- Reference Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Agriculture Research Center (ARC), Giza, Egypt
| | - Samah Eid
- Reference Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Agriculture Research Center (ARC), Giza, Egypt
| | - Mohamed N Abdelaziz
- Reference Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Agriculture Research Center (ARC), Giza, Egypt
| | - Mohamed M Hamoud
- Department of Poultry Diseases, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Osama Mehana
- Reference Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Agriculture Research Center (ARC), Giza, Egypt
| | - Naglaa M Hagag
- Reference Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Agriculture Research Center (ARC), Giza, Egypt
| | - Ahmed Samy
- Reference Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Agriculture Research Center (ARC), Giza, Egypt
- Infectious Bursal Disease Virus group, The Pirbright Institute, Surrey, UK
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6
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Liang Z, Leng M, Lian J, Chen Y, Wu Q, Chen F, Wang Z, Lin W. Novel variant infectious bursal disease virus diminishes FAdV-4 vaccination and enhances pathogenicity of FAdV-4. Vet Microbiol 2024; 292:110053. [PMID: 38502979 DOI: 10.1016/j.vetmic.2024.110053] [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: 12/23/2023] [Revised: 03/07/2024] [Accepted: 03/09/2024] [Indexed: 03/21/2024]
Abstract
Infectious bursal disease virus (IBDV) caused an acute and highly contagious infectious disease characterized by severe immunosuppression, causing considerable economic losses to the poultry industry globally. Although this disease was well-controlled under the widely use of commercial vaccines in the past decades, the novel variant IBDV strains emerged recently because of the highly immunized-selection pressure in the field, posting new threats to poultry industry. Here, we reported novel variant IBDV is responsible for a disease outbreak, and assessed the epidemic and pathogenicity of IBDV in this study. Moreover, we constructed a challenge model using Fowl adenovirus serotype 4 (FAdV-4) to study on the immunosuppressive effect. Our findings underscore the importance of IBDV surveillance, and provide evidence for understanding the pathogenicity of IBDV.
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Affiliation(s)
- Zhishan Liang
- Guangdong Provincial Animal Virus Vector Vaccine Engineering Technology Research Center, College of Animal Science, South China Agricultural University, Guangzhou 510642, PR China
| | - Mei Leng
- Guangdong Provincial Animal Virus Vector Vaccine Engineering Technology Research Center, College of Animal Science, South China Agricultural University, Guangzhou 510642, PR China
| | - Jiamin Lian
- Guangdong Provincial Animal Virus Vector Vaccine Engineering Technology Research Center, College of Animal Science, South China Agricultural University, Guangzhou 510642, PR China
| | - Yazheng Chen
- Guangdong Provincial Animal Virus Vector Vaccine Engineering Technology Research Center, College of Animal Science, South China Agricultural University, Guangzhou 510642, PR China
| | - Qi Wu
- Guangdong Provincial Animal Virus Vector Vaccine Engineering Technology Research Center, College of Animal Science, South China Agricultural University, Guangzhou 510642, PR China
| | - Feng Chen
- Guangdong Provincial Animal Virus Vector Vaccine Engineering Technology Research Center, College of Animal Science, South China Agricultural University, Guangzhou 510642, PR China
| | - Zhanxin Wang
- Wen's Group Academy, Wen's Foodstuffs Group Co., Ltd., Xinxing, Guangdong 527400, PR China.
| | - Wencheng Lin
- Guangdong Provincial Animal Virus Vector Vaccine Engineering Technology Research Center, College of Animal Science, South China Agricultural University, Guangzhou 510642, PR China.
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7
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Zhang T, Wang S, Liu Y, Qi X, Gao Y. Advances on adaptive immune responses affected by infectious bursal disease virus in chicken. Front Immunol 2024; 14:1330576. [PMID: 38268928 PMCID: PMC10806451 DOI: 10.3389/fimmu.2023.1330576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Accepted: 12/19/2023] [Indexed: 01/26/2024] Open
Abstract
Infectious bursal disease (IBD) is an acute, highly infectious, and immunosuppressive disease caused by the infectious bursal disease virus (IBDV), which interferes with the immune system, causes hypoimmunity and seriously threatens the healthy development of the poultry industry. Adaptive immune response, an important defense line of host resistance to pathogen infection, is the host-specific immune response mainly mediated by T and B lymphocytes. As an important immunosuppressive pathogen in poultry, IBDV infection is closely related to the injury of the adaptive immune system. In this review, we focus on recent advances in adaptive immune response influenced by IBDV infection, especially the damage on immune organs, as well as the effect on humoral immune response and cellular immune response, hoping to provide a theoretical basis for further exploration of the molecular mechanism of immunosuppression induced by IBDV infection and the establishment of novel prevention and control measures for IBD.
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Affiliation(s)
- Tao Zhang
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin, China
| | - Suyan Wang
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin, China
| | - Yongzhen Liu
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin, China
| | - Xiaole Qi
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin, China
| | - Yulong Gao
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin, China
- World Organization for Animal Health (WOAH) Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin, China
- Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonosis, Yangzhou University, Yangzhou, China
- National Poultry Laboratory Animal Resource Center, Harbin, China
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8
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Legnardi M, Poletto F, Talaat S, Selim K, Moawad MK, Franzo G, Tucciarone CM, Cecchinato M, Sultan H. First Detection and Molecular Characterization of Novel Variant Infectious Bursal Disease Virus (Genotype A2dB1b) in Egypt. Viruses 2023; 15:2388. [PMID: 38140629 PMCID: PMC10747051 DOI: 10.3390/v15122388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 12/02/2023] [Accepted: 12/05/2023] [Indexed: 12/24/2023] Open
Abstract
Infectious bursal disease (IBD) is an immunosuppressive disease causing significant damage to the poultry industry worldwide. Its etiological agent is infectious bursal disease virus (IBDV), a highly resistant RNA virus whose genetic variability considerably affects disease manifestation, diagnosis and control, primarily pursued by vaccination. In Egypt, very virulent strains (genotype A3B2), responsible for typical IBD signs and lesions and high mortality, have historically prevailed. The present molecular survey, however, suggests that a major epidemiological shift might be occurring in the country. Out of twenty-four samples collected in twelve governorates in 2022-2023, seven tested positive for IBDV. Two of them were A3B2 strains related to other very virulent Egyptian isolates, whereas the remaining five were novel variant IBDVs (A2dB1b), reported for the first time outside of Eastern and Southern Asia. This emerging genotype spawned a large-scale epidemic in China during the 2010s, characterized by subclinical IBD with severe bursal atrophy and immunosuppression. Its spread to Egypt is even more alarming considering that, contrary to circulating IBDVs, the protection conferred by available commercial vaccines appears suboptimal. These findings are therefore crucial for guiding monitoring and control efforts and helping to track the spread of novel variant IBDVs, possibly limiting their impact.
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Affiliation(s)
- Matteo Legnardi
- Department of Animal Medicine, Production and Health (MAPS), University of Padova, 35020 Legnaro, Italy; (F.P.); (G.F.); (C.M.T.); (M.C.)
| | - Francesca Poletto
- Department of Animal Medicine, Production and Health (MAPS), University of Padova, 35020 Legnaro, Italy; (F.P.); (G.F.); (C.M.T.); (M.C.)
| | - Shaimaa Talaat
- Department of Birds and Rabbits Medicine, Faculty of Veterinary Medicine, University of Sadat City, Menoufia 32958, Egypt;
| | - Karim Selim
- Reference Laboratory for Quality Control on Poultry Production, Animal Health Research Institute, Agriculture Research Center, Giza 12618, Egypt; (K.S.); (M.K.M.)
| | - Mahmoud K. Moawad
- Reference Laboratory for Quality Control on Poultry Production, Animal Health Research Institute, Agriculture Research Center, Giza 12618, Egypt; (K.S.); (M.K.M.)
| | - Giovanni Franzo
- Department of Animal Medicine, Production and Health (MAPS), University of Padova, 35020 Legnaro, Italy; (F.P.); (G.F.); (C.M.T.); (M.C.)
| | - Claudia Maria Tucciarone
- Department of Animal Medicine, Production and Health (MAPS), University of Padova, 35020 Legnaro, Italy; (F.P.); (G.F.); (C.M.T.); (M.C.)
| | - Mattia Cecchinato
- Department of Animal Medicine, Production and Health (MAPS), University of Padova, 35020 Legnaro, Italy; (F.P.); (G.F.); (C.M.T.); (M.C.)
| | - Hesham Sultan
- Department of Birds and Rabbits Medicine, Faculty of Veterinary Medicine, University of Sadat City, Menoufia 32958, Egypt;
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9
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Li K, Niu X, Jiang N, Zhang W, Wang G, Li K, Huang M, Gao Y, Qi X, Wang X. Comparative Pathogenicity of Three Strains of Infectious Bursal Disease Virus Closely Related to Poultry Industry. Viruses 2023; 15:1257. [PMID: 37376557 DOI: 10.3390/v15061257] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 05/25/2023] [Accepted: 05/25/2023] [Indexed: 06/29/2023] Open
Abstract
Infectious bursal disease (IBD) is an acute, highly contagious, immunosuppressive, and fatal infectious disease of young chickens caused by infectious bursal disease virus (IBDV). Since 2017, a new trend has been discovered in the IBDV epidemic, with very virulent IBDV (vvIBDV) and novel variant IBDV (nVarIBDV) becoming the two current dominant strains in East Asia including China. In this study, we compared the biological characteristics of the vvIBDV (HLJ0504 strain), nVarIBDV (SHG19 strain), and attenuated IBDV (attIBDV, Gt strain) using specific-pathogen-free (SPF) chicken infection model. The results showed that vvIBDV distributed in multiple tissues, replicated the fastest in lymphoid organs such as bursa of Fabricius, induced significant viremia and virus excretion, and is the most pathogenic virus with a mortality of more than 80%. The nVarIBDV had a weaker replication capability and did not kill the chickens but caused severe damage to the central immune organ bursa of Fabricius and B lymphocytes and induced significant viremia and virus excretion. The attIBDV strain was found not to be pathogenic. Further studies preliminarily suggested that the expression level of inflammatory factors triggered by HLJ0504 was the highest, followed by the SHG19 group. This study is the first to systematically compare the pathogenic characteristics of three IBDVs closely related to poultry industry from the perspectives of clinical signs, micro-pathology, virus replication, and distribution. It is of great importance to obtain an extensive knowledge of epidemiology, pathogenicity, and comprehensive prevention, and control of various IBDV strains.
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Affiliation(s)
- Kailin Li
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China
- World Organization for Animal Health (WOAH) Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China
| | - Xinxin Niu
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China
- World Organization for Animal Health (WOAH) Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China
| | - Nan Jiang
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China
- World Organization for Animal Health (WOAH) Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China
| | - Wenying Zhang
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China
- World Organization for Animal Health (WOAH) Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China
| | - Guodong Wang
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China
- World Organization for Animal Health (WOAH) Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China
| | - Kai Li
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China
- World Organization for Animal Health (WOAH) Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China
| | - Mengmeng Huang
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China
- World Organization for Animal Health (WOAH) Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China
| | - Yulong Gao
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China
- World Organization for Animal Health (WOAH) Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China
| | - Xiaole Qi
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China
- World Organization for Animal Health (WOAH) Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China
| | - Xiaomei Wang
- Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China
- World Organization for Animal Health (WOAH) Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China
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10
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Gao H, Wang Y, Gao L, Zheng SJ. Genetic Insight into the Interaction of IBDV with Host-A Clue to the Development of Novel IBDV Vaccines. Int J Mol Sci 2023; 24:ijms24098255. [PMID: 37175960 PMCID: PMC10179583 DOI: 10.3390/ijms24098255] [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: 03/31/2023] [Revised: 04/24/2023] [Accepted: 04/27/2023] [Indexed: 05/15/2023] Open
Abstract
Infectious bursal disease virus (IBDV) is an immunosuppressive pathogen causing enormous economic losses to the poultry industry across the globe. As a double-stranded RNA virus, IBDV undergoes genetic mutation or recombination in replication during circulation among flocks, leading to the generation and spread of variant or recombinant strains. In particular, the recent emergence of variant IBDV causes severe immunosuppression in chickens, affecting the efficacy of other vaccines. It seems that the genetic mutation of IBDV during the battle against host response is an effective strategy to help itself to survive. Therefore, a comprehensive understanding of the viral genome diversity will definitely help to develop effective measures for prevention and control of infectious bursal disease (IBD). In recent years, considerable progress has been made in understanding the relation of genetic mutation and genomic recombination of IBDV to its pathogenesis using the reverse genetic technique. Therefore, this review focuses on our current genetic insight into the IBDV's genetic typing and viral genomic variation.
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Affiliation(s)
- Hui Gao
- National Key Laboratory of Veterinary Public Health Security, Beijing 100193, China
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, Beijing 100193, China
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Yongqiang Wang
- National Key Laboratory of Veterinary Public Health Security, Beijing 100193, China
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, Beijing 100193, China
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Li Gao
- National Key Laboratory of Veterinary Public Health Security, Beijing 100193, China
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, Beijing 100193, China
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Shijun J Zheng
- National Key Laboratory of Veterinary Public Health Security, Beijing 100193, China
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, Beijing 100193, China
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
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11
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Pikuła A, Lisowska A, Domańska-Blicharz K. Epidemiology of Infectious Bursal Disease Virus in Poland during 2016-2022. Viruses 2023; 15:v15020289. [PMID: 36851502 PMCID: PMC9963850 DOI: 10.3390/v15020289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 01/04/2023] [Accepted: 01/17/2023] [Indexed: 01/20/2023] Open
Abstract
Infectious bursal disease virus is an immunosuppressive ubiquitous pathogen that causes serious economic losses in poultry production. The virus is prone to genetic changes through mutations and reassortment, which drive the emergence of new variants and lead to a change in the epidemiological situation in a field. Such a situation is currently being reported due to a large wave of IBDV A3B1 reassortant infections in northwestern Europe. On the other hand, in Poland, which is the largest producer of chicken meat in the EU, the IBDVs of genotypes A3B2 and A3B4 were circulating just before the emergence of A3B1 reassortants. The purpose of the presented study was to update the IBDV epidemiological situation. The performed molecular survey based on the sequence of both genome segments showed the presence of very virulent strains (A3B2) and reassortants of genotypes A3B4 and A3B1; moreover, two of these genotypes are newly introduced IBDV lineages. In addition, a number of amino acid substitutions were demonstrated, including within antigenic epitopes and virulence determinants. In conclusion, the results obtained indicated a dynamic epidemiological situation in Poland, which highlights the need for further monitoring studies in the region and verification of protection conferred by the vaccines used against infection with detected IBDV.
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12
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Zhang W, Wang X, Gao Y, Qi X. The Over-40-Years-Epidemic of Infectious Bursal Disease Virus in China. Viruses 2022; 14:v14102253. [PMID: 36298808 PMCID: PMC9607638 DOI: 10.3390/v14102253] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 10/05/2022] [Accepted: 10/12/2022] [Indexed: 11/23/2022] Open
Abstract
Infectious bursal disease (IBD) is an acute, highly contagious, immunosuppressive disease of chickens caused by the virus (IBDV), which critically threatens the development of the global chicken industry and causes huge economic losses. As a large country in the poultry industry, the epidemic history of IBDV in China for more than 40 years has been briefly discussed and summarized for the first time in this report. The first classic strain of IBDV appeared in China in the late 1970s. In the late 1980s and early 1990s, the very virulent IBDV (vvIBDV) rapidly swept across the entirety of China, threatening the healthy development of the poultry industry for more than 30 years. Variants of IBDV, after long-term latent circulation with the accumulation of mutations since the early 1990s, suddenly reappeared as novel variant strains (nVarIBDV) in China in the mid-2010s. Currently, there is a coexistence of various IBDV genotypes; the newly emerging nVarIBDV of A2dB1 and persistently circulating vvIBDV of A3B3 are the two predominant epidemic strains endangering the poultry industry. Continuous epidemiological testing and the development of new prevention and control agents are important and require more attention. This report is of great significance to scientific cognition and the comprehensive prevention and control of the IBDV epidemic.
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Affiliation(s)
- Wenying Zhang
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China
- World Organization for Animal Health (WOAH) Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China
| | - Xiaomei Wang
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China
- World Organization for Animal Health (WOAH) Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China
| | - Yulong Gao
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China
- World Organization for Animal Health (WOAH) Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China
- Correspondence: (Y.G.); (X.Q.); Tel.: +86-451-51051694 (X.Q.); Fax: +86-451-51997166 (X.Q.)
| | - Xiaole Qi
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China
- World Organization for Animal Health (WOAH) Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China
- Correspondence: (Y.G.); (X.Q.); Tel.: +86-451-51051694 (X.Q.); Fax: +86-451-51997166 (X.Q.)
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13
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Pikuła A, Lisowska A. Genetics and Pathogenicity of Natural Reassortant of Infectious Bursal Disease Virus Emerging in Latvia. Pathogens 2022; 11:pathogens11101081. [PMID: 36297138 PMCID: PMC9612254 DOI: 10.3390/pathogens11101081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 09/19/2022] [Accepted: 09/19/2022] [Indexed: 11/16/2022] Open
Abstract
Infectious bursal disease virus is an immunosuppressive pathogen that, despite applied vaccination, is affecting the poultry industry worldwide. This report presents the genetic and pathotypic characterization of a natural reassortant emerging in Europe (Latvia). Genetic characterization showed that strain 25/11/Latvia/2011 represents genotype A3B1, whose segment A is derived from very virulent strains, while segment B is from the classic-like genogroup. Phylogenetic maximum likelihood inference of the B-segment sequence clustered the reassortant strain together with the US antigenic variant E strain. However, the obtained full-length sequence of 25/11/Latvia/2011 revealed that not only reassortment but also dozens of mutations shaped the unique genetic makeup. Phenotypic characterization showed no mortality and no clinical signs of disease but a severe bursa of Fabricius atrophy and splenomegaly in the convalescent birds at 10 days post infection. The results obtained indicate that the acquired genetic constellation contributed to a decrease in virulence; nevertheless, the infection causes severe damage to lymphoid organs, which can lead to impaired immune responses.
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14
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Fan L, Wang Y, Jiang N, Gao Y, Niu X, Zhang W, Huang M, Bao K, Liu A, Wang S, Gao L, Li K, Cui H, Pan Q, Liu C, Zhang Y, Wang X, Qi X. Residues 318 and 323 in capsid protein are involved in immune circumvention of the atypical epizootic infection of infectious bursal disease virus. Front Microbiol 2022; 13:909252. [PMID: 35966653 PMCID: PMC9372508 DOI: 10.3389/fmicb.2022.909252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 07/04/2022] [Indexed: 11/16/2022] Open
Abstract
Recently, atypical infectious bursal disease (IBD) caused by a novel variant infectious bursal disease virus (varIBDV) suddenly appeared in immunized chicken flocks in East Asia and led to serious economic losses. The epizootic varIBDV can partly circumvent the immune protection of the existing vaccines against the persistently circulating very virulent IBDV (vvIBDV), but its mechanism is still unknown. This study proved that the neutralizing titer of vvIBDV antiserum to the epizootic varIBDV reduced by 7.0 log2, and the neutralizing titer of the epizootic varIBDV antiserum to vvIBDV reduced by 3.2 log2. In addition, one monoclonal antibody (MAb) 2-5C-6F had good neutralizing activity against vvIBDV but could not well recognize the epizootic varIBDV. The epitope of the MAb 2-5C-6F was identified, and two mutations of G318D and D323Q of capsid protein VP2 occurred in the epizootic varIBDV compared to vvIBDV. Subsequently, the indirect immunofluorescence assay based on serial mutants of VP2 protein verified that residue mutations 318 and 323 influenced the recognition of the epizootic varIBDV and vvIBDV by the MAb 2-5C-6F, which was further confirmed by the serial rescued mutated virus. The following cross-neutralizing assay directed by MAb showed residue mutations 318 and 323 also affected the neutralization of the virus. Further data also showed that the mutations of residues 318 and 323 of VP2 significantly affected the neutralization of the IBDV by antiserum, which might be deeply involved in the immune circumvention of the epizootic varIBDV in the vaccinated flock. This study is significant for the comprehensive prevention and control of the emerging varIBDV.
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Affiliation(s)
- Linjin Fan
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
- OIE Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
| | - Yulong Wang
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
- OIE Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
| | - Nan Jiang
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
- OIE Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
| | - Yulong Gao
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
- OIE Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
| | - Xinxin Niu
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
- OIE Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
| | - Wenying Zhang
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
- OIE Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
| | - Mengmeng Huang
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
- OIE Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
| | - Keyan Bao
- National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Aijing Liu
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
- OIE Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
| | - Suyan Wang
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
- OIE Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
| | - Li Gao
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
- OIE Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
| | - Kai Li
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
| | - Hongyu Cui
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
| | - Qing Pan
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
| | - Changjun Liu
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
| | - Yanping Zhang
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
| | - Xiaomei Wang
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
- OIE Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
- Jiangsu Co-innovation Centre for Prevention and Control of Important Animal Infectious Disease and Zoonoses, Yangzhou University, Yangzhou, China
| | - Xiaole Qi
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
- OIE Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
- *Correspondence: Xiaole Qi
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15
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Dynamics of the Emerging Genogroup of Infectious Bursal Disease Virus Infection in Broiler Farms in South Korea: A Nationwide Study. Viruses 2022; 14:v14081604. [PMID: 35893669 PMCID: PMC9330851 DOI: 10.3390/v14081604] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 07/19/2022] [Accepted: 07/20/2022] [Indexed: 02/01/2023] Open
Abstract
Infectious bursal disease (IBD), caused by IBD virus (IBDV), threatens the health of the poultry industry. Recently, a subtype of genogroup (G) 2 IBDV named G2d has brought a new threat to the poultry industry. To determine the current status of IBDV prevalence in South Korea, active IBDV surveillance on 167 randomly selected broiler farms in South Korea from August 2020 to July 2021 was conducted. The bursas of Fabricius from five chickens from each farm were independently pooled and screened for IBDV using virus-specific RT-PCR. As a result, 86 farms were found to be infected with the G2d variant, 13 farms with G2b, and 2 farms with G3. Current prevalence estimation of IBDV infection in South Korea was determined as 17.8% at the animal level using pooled sampling methods. G2d IBDV was predominant compared to other genogroups, with a potentially high-risk G2d infection area in southwestern South Korea. The impact of IBDV infection on poultry productivity or Escherichia coli infection susceptibility was also confirmed. A comparative pathogenicity test indicated that G2d IBDV caused severe and persistent damage to infected chickens compared with G2b. This study highlights the importance of implementation of regular surveillance programs and poses challenges for the comprehensive prevention of IBDV infections.
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Wang W, He X, Zhang Y, Qiao Y, Shi J, Chen R, Chen J, Xiang Y, Wang Z, Chen G, Huang J, Huang T, Wei T, Mo M, Wei P. Analysis of the global origin, evolution and transmission dynamics of the emerging novel variant IBDV (A2dB1b): The accumulation of critical aa-residue mutations and commercial trade contributes to the emergence and transmission of novel variants. Transbound Emerg Dis 2022; 69:e2832-e2851. [PMID: 35717667 DOI: 10.1111/tbed.14634] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 06/15/2022] [Accepted: 06/15/2022] [Indexed: 12/18/2022]
Abstract
The Chinese IBDV novel variant (nvIBDV), belonging to the genotype A2dB1b, an emerging pathotype that can cause subclinical disease with severe, prolonged immunosuppression, poses a new threat to the poultry industry. The process of the global origin, evolution and transmission dynamics of nvIBDV, however, is poorly understood. In this study, phylogenetic trees, site substitutions of amino acid (aa) and highly accurate protein structure modelling, selection pressure, evolutionary and transmission dynamics of nvIBDV were analysed. Interestingly, nvIBDV was classified into the same genogroup with the early US antigenic variants (avIBDV) but in a new lineage with a markedly different and specific pattern of 17 aa-residual substitutions: 13 in VP2 (77D, 213N, 221K, 222T, 249K, 252I, 253Q, 254N, 284A, 286I, 299S, 318D and 323E) and four in VP1 (141I, 163V, 240E and 508K). Importantly, the aa-residues 299S and 163V may play a key role in cell binding and polymerase activity, respectively. The effective population size of the circulating avIBDV experienced two growth phases, respectively, in the years 1999-2007 (in North America) and 2015-2021 (in Asia), which is consistent with the observed trend of the epidemic outbreaks. The most recent common ancestor (tMRCA) of avIBDV most first originated in the USA and was dated around the 1970s. After its emergence, the ancestor virus of this group probably spread to China around the 1990s and the variants experienced a long-term latent circulation with the accumulation of several critical aa-residue mutations in VP2 until re-emerging in 2016. At present, central China has become the epicentre of nvIBDV spread to other parts of China and Asian countries. Importantly, a strong correlation seems to exist between the transmission patterns of virus and the flow of commercial trade of live poultry and products. These findings provide important insights into the origin, evolution and transmission of the nvIBDV and will assist in the development of programs for control strategies for these emerging viruses.
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Affiliation(s)
- Weiwei Wang
- Institute for Poultry Science and Health, Guangxi University, Nanning, China
| | - Xiumiao He
- Guangxi Key Laboratory for Polysaccharide Materials and Modifications, School of Marine Sciences and Biotechnology, Guangxi University for Nationalities, Nanning, China
| | - Yan Zhang
- Institute for Poultry Science and Health, Guangxi University, Nanning, China
| | - Yuanzheng Qiao
- Institute for Poultry Science and Health, Guangxi University, Nanning, China
| | - Jun Shi
- Institute for Poultry Science and Health, Guangxi University, Nanning, China
| | - Rui Chen
- Guangxi Key Laboratory for Polysaccharide Materials and Modifications, School of Marine Sciences and Biotechnology, Guangxi University for Nationalities, Nanning, China
| | - Jinnan Chen
- Guangxi Key Laboratory for Polysaccharide Materials and Modifications, School of Marine Sciences and Biotechnology, Guangxi University for Nationalities, Nanning, China
| | - Yanhua Xiang
- Guangxi Key Laboratory for Polysaccharide Materials and Modifications, School of Marine Sciences and Biotechnology, Guangxi University for Nationalities, Nanning, China
| | - Zhiyuan Wang
- Guangxi Key Laboratory for Polysaccharide Materials and Modifications, School of Marine Sciences and Biotechnology, Guangxi University for Nationalities, Nanning, China
| | - Guo Chen
- Institute for Poultry Science and Health, Guangxi University, Nanning, China
| | - Jianni Huang
- Institute for Poultry Science and Health, Guangxi University, Nanning, China
| | - Teng Huang
- Institute for Poultry Science and Health, Guangxi University, Nanning, China
| | - Tianchao Wei
- Institute for Poultry Science and Health, Guangxi University, Nanning, China
| | - Meilan Mo
- Institute for Poultry Science and Health, Guangxi University, Nanning, China
| | - Ping Wei
- Institute for Poultry Science and Health, Guangxi University, Nanning, China
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17
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Trapp J, Rautenschlein S. Infectious bursal disease virus' interferences with host immune cells: What do we know? Avian Pathol 2022; 51:303-316. [PMID: 35616498 DOI: 10.1080/03079457.2022.2080641] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
AbstractInfectious bursal disease virus (IBDV) induces one of the most important immunosuppressive diseases in chickens leading to high economic losses due increased mortality and condemnation rates, secondary infections and the need for antibiotic treatment. Over 400 publications have been listed in PubMed.gov in the last five years pointing out the research interest in this disease and the development of improved preventive measures. While B cells are the main target cells of the virus, also other immune and non-immune cell populations are affected leading a multifaceted impact on the normally well orchestrated immune system in IBDV-infected birds. Recent studies clearly revealed the contribution of innate immune cells as well as T cells to a cytokine storm and subsequent death of affected birds in the acute phase of the disease. Transcriptomics identified differential regulation of immune related genes between different chicken genotypes as well as virus strains, which may be associated with a variable disease outcome. The recent availability of primary B cell culture systems allowed a closer look into virus-host interactions during IBDV-infection. The new emerging field of research with transgenic chickens will open up new opportunities to understand the impact of IBDV on the host also under in vivo conditions, which will help to understand the complex virus-host interactions further.
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Affiliation(s)
- Johanna Trapp
- Clinic for Poultry, University of Veterinary Medicine Hannover, 30559 Hannover, Germany
| | - Silke Rautenschlein
- Clinic for Poultry, University of Veterinary Medicine Hannover, 30559 Hannover, Germany
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18
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Jiang N, Wang Y, Zhang W, Niu X, Huang M, Gao Y, Liu A, Gao L, Li K, Pan Q, Liu C, Zhang Y, Cui H, Wang X, Qi X. Genotyping and Molecular Characterization of Infectious Bursal Disease Virus Identified in Important Poultry-Raising Areas of China During 2019 and 2020. Front Vet Sci 2021; 8:759861. [PMID: 34926638 PMCID: PMC8671459 DOI: 10.3389/fvets.2021.759861] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 11/05/2021] [Indexed: 11/16/2022] Open
Abstract
Infectious bursal disease (IBD) is an acute and highly contagious immunosuppressive disease caused by the infectious bursal disease virus (IBDV), which seriously threatens the healthy development of the poultry industry. Since its spread to China in the early 1990s, the very virulent IBDV (vvIBDV) characterized by high lethality, has been the focus of prevention and control. However, the novel variant IBDV (nVarIBDV), which has been widely prevalent in China since 2017, has brought a new threat to the poultry industry. In this study, the prevalence of IBDV in the important poultry-raising areas of China from 2019 to 2020 was detected. Of these, 45.1% (101/224) of the samples and 61.9% (26/42) of the chicken flocks were shown to be positive for IBDV. For 50 IBDVs, the sequences of the hypervariable region of the VP2 gene in segment A and of the B-marker of the VP1 gene in segment B were analyzed. The results revealed the coexistence of a number of different IBDV genotypes, including A2dB1 (nVar, 26/50, 52.0%), A3B3 (HLJ0504-like, 15/50, 30.0%), A1B1 (classical, 1/50, 2.0%), and A8B1 (attenuated, 1/50, 2.0%). This indicated that the newly emerging nVarIBDV of A2dB1 and the persistently circulating HLJ0504-like vvIBDV of A3B3 are the two important epidemic strains. Furthermore, we established that segment reassortment has occurred among these circulating strains. This study is the first to reveal the novel epidemic characteristics of IBDV since the report of the emerging nVarIBDV of A2dB1 in China.
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Affiliation(s)
- Nan Jiang
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
| | - Yulong Wang
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
| | - Wenying Zhang
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
| | - Xinxin Niu
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
| | - Mengmeng Huang
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
| | - Yulong Gao
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
| | - Aijing Liu
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
| | - Li Gao
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
| | - Kai Li
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
| | - Qing Pan
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
| | - Changjun Liu
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
| | - Yanping Zhang
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
| | - Hongyu Cui
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
| | - Xiaomei Wang
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China.,Jiangsu Co-innovation Centre for Prevention and Control of Important Animal Infectious Disease and Zoonosis, Yangzhou University, Yangzhou, China
| | - Xiaole Qi
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
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19
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Lian J, Wang Z, Xu Z, Pang Y, Leng M, Tang S, Zhang X, Qin J, Chen F, Lin W. Pathogenicity and molecular characterization of infectious bursal disease virus in China. Poult Sci 2021; 101:101502. [PMID: 34871986 PMCID: PMC8649399 DOI: 10.1016/j.psj.2021.101502] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 09/13/2021] [Accepted: 09/14/2021] [Indexed: 11/24/2022] Open
Abstract
Infectious bursal disease virus (IBDV) caused an acute and highly contagious infectious disease, resulting in considerable economic losses in the world poultry industry. Although this disease was well-controlled under the widely use of commercial vaccines, the novel variant IBDV strain emerged due to the highly immunized-selection pressure in the field, posting new threats to poultry industry. Here, we reported the epidemic and pathogenicity of IBDV in Hubei Province from May to August 2020. We isolated 12 IBDV strains from the broiler flocks, including 9 novel variants, 2 very virulent strains and 1 medium virulent strain. Interestingly, we identified a series of changes of amino acid sites in the VP2. Further analysis indicated that the novel variant IBDV strains caused damage to bursa of fabricius and spleen, leading to immunosuppression. Our findings underscore the importance of IBDV surveillance, and provide evidence for understanding the evolution of IBDV.
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Affiliation(s)
- Jiamin Lian
- Guangdong Provincial Animal Virus Vector Vaccine Engineering Technology Research Center, College of Animal Science, South China Agricultural University, Guangzhou, 510642, P.R. China
| | - Zhanxin Wang
- Wen's Group Academy, Wen's Foodstuffs Group Co., Ltd., Xinxing, 527400, Guangdong, P.R. China
| | - Zhouyi Xu
- Wen's Group Academy, Wen's Foodstuffs Group Co., Ltd., Xinxing, 527400, Guangdong, P.R. China
| | - Yanling Pang
- Guangdong Provincial Animal Virus Vector Vaccine Engineering Technology Research Center, College of Animal Science, South China Agricultural University, Guangzhou, 510642, P.R. China
| | - Mei Leng
- Guangdong Provincial Animal Virus Vector Vaccine Engineering Technology Research Center, College of Animal Science, South China Agricultural University, Guangzhou, 510642, P.R. China
| | - Shuang Tang
- Guangdong Provincial Animal Virus Vector Vaccine Engineering Technology Research Center, College of Animal Science, South China Agricultural University, Guangzhou, 510642, P.R. China
| | - Xinheng Zhang
- Guangdong Provincial Animal Virus Vector Vaccine Engineering Technology Research Center, College of Animal Science, South China Agricultural University, Guangzhou, 510642, P.R. China.; Key Laboratory of Healthy Animal Husbandry and Environmental Control of Guangdong Province, Guangzhou, 510642, Guangdong, P.R. China
| | - Jianping Qin
- Wen's Group Academy, Wen's Foodstuffs Group Co., Ltd., Xinxing, 527400, Guangdong, P.R. China
| | - Feng Chen
- Guangdong Provincial Animal Virus Vector Vaccine Engineering Technology Research Center, College of Animal Science, South China Agricultural University, Guangzhou, 510642, P.R. China.; Key Laboratory of Healthy Animal Husbandry and Environmental Control of Guangdong Province, Guangzhou, 510642, Guangdong, P.R. China
| | - Wencheng Lin
- Guangdong Provincial Animal Virus Vector Vaccine Engineering Technology Research Center, College of Animal Science, South China Agricultural University, Guangzhou, 510642, P.R. China.; Key Laboratory of Healthy Animal Husbandry and Environmental Control of Guangdong Province, Guangzhou, 510642, Guangdong, P.R. China..
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20
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Yang D, Zhang L, Duan J, Huang Q, Yu Y, Zhou J, Lu H. A Single Vaccination of IBDV Subviral Particles Generated by Kluyveromyces marxianus Efficiently Protects Chickens against Novel Variant and Classical IBDV Strains. Vaccines (Basel) 2021; 9:vaccines9121443. [PMID: 34960188 PMCID: PMC8706917 DOI: 10.3390/vaccines9121443] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 12/03/2021] [Accepted: 12/04/2021] [Indexed: 01/26/2023] Open
Abstract
Infectious bursal disease (IBD), caused by the infectious bursal disease virus (IBDV), is a highly contagious and immunosuppressive disease in chickens worldwide. The novel variant IBDV (nvIBDV) has been emerging in Chinese chicken farms since 2017, but there are no available vaccines that can provide effective protection. Herein, the capsid protein VP2 from nvIBDV strain FJ-18 was expressed in Kluyveromyces marxianus with the aim to produce nvIBDV subviral particles (SVPs). Two recombinant strains constructed for expression of nvIBDV VP2 (nvVP2) and His-tagged VP2 (nvHVP2) formed two types of nvIBDV subviral particles (SVPs), namely nvVP2-SVPs and nvHVP2-SVPs. TEM scans showed that both SVPs were about 25 nm in diameter, but there was a large portion of nvVP2-SVPs showing non-spherical particles. Molecular dynamics simulations indicate that an N-terminal His tag strengthened the interaction of the nvHVP2 monomer and contributed to the assembly of SVPs. Vaccination of chicks with the nvHVP2-SVPs provided 100% protection against novel variant IBDV infection when challenged with the FJ-18 strain, as well as the classical strain BC6/85. By contrast, vaccination with the nvVP2-SVPs only provided 60% protection against their parent FJ-18 strain, suggesting that the stable conformation of subviral particles posed a great impact on their protective efficacy. Our results showed that the nvHVP2-SVPs produced by the recombinant K. marxianus strain is an ideal vaccine candidate for IBDV eradication.
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Affiliation(s)
- Deqiang Yang
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, 2005 Songhu Road, Shanghai 200438, China; (D.Y.); (Q.H.); (Y.Y.)
- Shanghai Engineering Research Center of Industrial Microorganisms, 2005 Songhu Road, Shanghai 200438, China
| | - Lixia Zhang
- Tianjin Ruipu Biotechnology Co. Ltd., Tianjin 300350, China; (L.Z.); (J.D.)
| | - Jinkun Duan
- Tianjin Ruipu Biotechnology Co. Ltd., Tianjin 300350, China; (L.Z.); (J.D.)
| | - Qiang Huang
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, 2005 Songhu Road, Shanghai 200438, China; (D.Y.); (Q.H.); (Y.Y.)
- Shanghai Engineering Research Center of Industrial Microorganisms, 2005 Songhu Road, Shanghai 200438, China
| | - Yao Yu
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, 2005 Songhu Road, Shanghai 200438, China; (D.Y.); (Q.H.); (Y.Y.)
- Shanghai Engineering Research Center of Industrial Microorganisms, 2005 Songhu Road, Shanghai 200438, China
| | - Jungang Zhou
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, 2005 Songhu Road, Shanghai 200438, China; (D.Y.); (Q.H.); (Y.Y.)
- Shanghai Engineering Research Center of Industrial Microorganisms, 2005 Songhu Road, Shanghai 200438, China
- Correspondence: (J.Z.); (H.L.); Tel.: +86-021-31246579 (H.L.)
| | - Hong Lu
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, 2005 Songhu Road, Shanghai 200438, China; (D.Y.); (Q.H.); (Y.Y.)
- Shanghai Engineering Research Center of Industrial Microorganisms, 2005 Songhu Road, Shanghai 200438, China
- Shanghai Collaborative Innovation Center for Biomanufacturing (SCICB), East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
- Correspondence: (J.Z.); (H.L.); Tel.: +86-021-31246579 (H.L.)
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21
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Aliyu HB, Hamisu TM, Hair-Bejo M, Omar AR, Aini I. Comparative Pathogenicity of Malaysian variant and very virulent infectious bursal disease viruses in chickens. Avian Pathol 2021; 51:76-86. [PMID: 34842475 DOI: 10.1080/03079457.2021.2006604] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Variant infectious bursal disease virus (vaIBDV) has been identified in various countries with significant economic losses. Recently, the first identification of variant strain in Malaysia was reported. The pathogenicity of the Malaysian variant, UPM1432/2019 and very virulent infectious bursal disease virus (vvIBDV), UPM1056/2018 strains were comparatively evaluated in specific-pathogen-free (SPF) chickens based on gross and histopathological examinations and viral load. Four-week-old SPF chickens were randomly divided into 3 groups; Group 1 served as the control, while groups 2 and 3 birds were challenged with the vaIBDV and vvIBDV, respectively. Three birds from each group were weighed, euthanised and necropsied at 2-, 3-, 4-, 5-, 7- and 21-days post-challenge (dpc). Unlike UPM1056/2018 group, birds from UPM1432/2019 group did not show clinical signs or death. UPM1056/2018 strain caused 11% mortality rate in the infected chickens. The bursal body index (BBIX) for UPM1432/2019- and UPM1056/2018 groups was < 0.7 from 2 dpc and continued to decrease to 0.49 and 0.45, respectively at 21 dpc. UPM1432/2019 strain was more persistent in the bursa than UPM1056/2018 strain. Both strains induced similar pathological lesions in SPF chicks. These results indicate that the Malaysian vaIBDV severely damaged the immune organs of chickens and was more persistent in bursal tissue than vvIBDV. The study provides insight into the pathogenicity of the variant strain as further study may be required to evaluate the efficacy of the current available IBD vaccines in Malaysia against the strain.
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Affiliation(s)
- H B Aliyu
- Department of Veterinary Clinical Studies, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor Darul Ehsan, Malaysia .,Avian Unit, Veterinary Teaching Hospital, Ahmadu Bello University, P.M.B. 1045, Zaria, Nigeria
| | - T M Hamisu
- Department of Veterinary Clinical Studies, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor Darul Ehsan, Malaysia .,Department of Veterinary Microbiology, Faculty of Veterinary Medicine, University of Maiduguri, P. M. B.1069, Maiduguri, Borno State Nigeria
| | - M Hair-Bejo
- Laboratory of Vaccines and Biomolecules, Institute of Bioscience, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor Darul Ehsan, Malaysia.,Department of Veterinary Pathology and Microbiology, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor Darul Ehsan, Malaysia
| | - A R Omar
- Laboratory of Vaccines and Biomolecules, Institute of Bioscience, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor Darul Ehsan, Malaysia.,Department of Veterinary Pathology and Microbiology, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor Darul Ehsan, Malaysia
| | - I Aini
- Department of Veterinary Clinical Studies, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor Darul Ehsan, Malaysia .,Laboratory of Vaccines and Biomolecules, Institute of Bioscience, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor Darul Ehsan, Malaysia
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22
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Wang W, Huang Y, Zhang Y, Qiao Y, Deng Q, Chen R, Chen J, Huang T, Wei T, Mo M, He X, Wei P. The emerging naturally reassortant strain of IBDV (genotype A2dB3) having segment A from Chinese novel variant strain and segment B from HLJ 0504-like very virulent strain showed enhanced pathogenicity to three-yellow chickens. Transbound Emerg Dis 2021; 69:e566-e579. [PMID: 34581009 DOI: 10.1111/tbed.14336] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 09/11/2021] [Accepted: 09/20/2021] [Indexed: 01/25/2023]
Abstract
Novel variant infectious bursal disease virus (nvIBDV) is an emerging pathotype that can cause sub-clinical disease with severe, prolonged immunosuppression in young chickens. At present, two major pathotypes, including vvIBDV and nvIBDV, are prevailing in China. In this study, we propose that the nvIBDV is a new genotype (A2dB1b) and also first isolated and characterized a nvIBDV reassortant strain YL160304 (A2dB3) with segments A and B derived, respectively, from the nvIBDV and the HLJ-0504-like vvIBDV from yellow chickens in southern China. The YL160304 causes more extensive cytotropism and can infect specific-pathogen-free chicken embryos with severe subcutaneous hemorrhage. The pathogenicity of YL160304 to 4-week-old three-yellow chickens was determined and compared with those of the nvIBDV QZ191002 and the HLJ-0504-like vvIBDV NN1172. Weight gain was significantly reduced in all the challenged birds. No clinical signs and associated mortality were observed in the birds challenged with QZ191002, while the mortalities in the birds challenged with NN1172 and YL160304 were 30% (3/10) and 10% (1/10), respectively. At 7 days postchallenge, the bursa was severely damaged and the percentage of peripheral blood B lymphocyte (PBBL) decreased significantly in all the challenged birds and the quantity of the viral RNA detected in the bursa was in accordance with the results of the histomorphometry and the depletion of PBBL. This study not only confirmed the emerging epidemic of the novel variant and its reassortant strains, but also discovered that the naturally reassortant nvIBDV strain with the segment B of HLJ 0504-like vvIBDV can significantly enhance the pathogenicity to chickens.
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Affiliation(s)
- Weiwei Wang
- Institute for Poultry Science and Health, Guangxi University, Nanning, P. R. China
| | - Yu Huang
- Institute for Poultry Science and Health, Guangxi University, Nanning, P. R. China
| | - Yan Zhang
- Institute for Poultry Science and Health, Guangxi University, Nanning, P. R. China
| | - Yuanzheng Qiao
- Institute for Poultry Science and Health, Guangxi University, Nanning, P. R. China
| | - Qiaomu Deng
- Institute for Poultry Science and Health, Guangxi University, Nanning, P. R. China
| | - Rui Chen
- School of Marine Sciences and Biotechnology, Guangxi University for Nationalities, Nanning, P. R. China.,Guangxi Key Laboratory Cultivation Base for Polysaccharide Materials and Modifications, Guangxi University for Nationalities, Nanning, P. R. China
| | - Jinnan Chen
- School of Marine Sciences and Biotechnology, Guangxi University for Nationalities, Nanning, P. R. China.,Guangxi Key Laboratory Cultivation Base for Polysaccharide Materials and Modifications, Guangxi University for Nationalities, Nanning, P. R. China
| | - Teng Huang
- Institute for Poultry Science and Health, Guangxi University, Nanning, P. R. China
| | - Tianchao Wei
- Institute for Poultry Science and Health, Guangxi University, Nanning, P. R. China
| | - Meilan Mo
- Institute for Poultry Science and Health, Guangxi University, Nanning, P. R. China
| | - Xiumiao He
- School of Marine Sciences and Biotechnology, Guangxi University for Nationalities, Nanning, P. R. China.,Guangxi Key Laboratory Cultivation Base for Polysaccharide Materials and Modifications, Guangxi University for Nationalities, Nanning, P. R. China
| | - Ping Wei
- Institute for Poultry Science and Health, Guangxi University, Nanning, P. R. China
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23
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Wang Y, Jiang N, Fan L, Niu X, Zhang W, Huang M, Gao L, Li K, Gao Y, Liu C, Cui H, Liu A, Pan Q, Zhang Y, Wang X, Qi X. Identification and Pathogenicity Evaluation of a Novel Reassortant Infectious Bursal Disease Virus (Genotype A2dB3). Viruses 2021; 13:v13091682. [PMID: 34578267 PMCID: PMC8472943 DOI: 10.3390/v13091682] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 08/17/2021] [Accepted: 08/18/2021] [Indexed: 01/26/2023] Open
Abstract
Infectious bursal disease virus (IBDV) is a non-enveloped, bi-segmented double-stranded RNA virus and the causative agent of a poultry immunosuppressive disease known as infectious bursal disease (IBD). The novel variant IBDV (nVarIBDV) recently posed a great threat to the development of the poultry industry. In this study, we identified a novel segment-reassortant IBDV strain, IBDV-JS19-14701 (Genotype A2dB3). Phylogenic analysis showed that Segments A and B of IBDV-JS19-14701 were derived from emerging nVarIBDV (Genotype A2dB1) and long-prevalent HLJ0504-like strains (Genotype A3B3) in China, respectively. The pathogenicity of IBDV-JS19-14701 was further evaluated via animal experiments. IBDV-JS19-14701 exhibited a similar virulence to chickens with the nVarIBDV. The identification of this reassortment event is beneficial for understanding the epidemiology of nVarIBDV and will contribute to the efficient prevention and control of IBD.
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Affiliation(s)
- Yulong Wang
- State Key Laboratory of Veterinary Biotechnology, Avian Immunosuppressive Diseases Division, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China; (Y.W.); (N.J.); (L.F.); (X.N.); (W.Z.); (M.H.); (L.G.); (K.L.); (Y.G.); (C.L.); (H.C.); (A.L.); (Q.P.); (Y.Z.); (X.W.)
- OIE Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China
| | - Nan Jiang
- State Key Laboratory of Veterinary Biotechnology, Avian Immunosuppressive Diseases Division, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China; (Y.W.); (N.J.); (L.F.); (X.N.); (W.Z.); (M.H.); (L.G.); (K.L.); (Y.G.); (C.L.); (H.C.); (A.L.); (Q.P.); (Y.Z.); (X.W.)
- OIE Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China
| | - Linjin Fan
- State Key Laboratory of Veterinary Biotechnology, Avian Immunosuppressive Diseases Division, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China; (Y.W.); (N.J.); (L.F.); (X.N.); (W.Z.); (M.H.); (L.G.); (K.L.); (Y.G.); (C.L.); (H.C.); (A.L.); (Q.P.); (Y.Z.); (X.W.)
- OIE Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China
| | - Xinxin Niu
- State Key Laboratory of Veterinary Biotechnology, Avian Immunosuppressive Diseases Division, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China; (Y.W.); (N.J.); (L.F.); (X.N.); (W.Z.); (M.H.); (L.G.); (K.L.); (Y.G.); (C.L.); (H.C.); (A.L.); (Q.P.); (Y.Z.); (X.W.)
- OIE Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China
| | - Wenying Zhang
- State Key Laboratory of Veterinary Biotechnology, Avian Immunosuppressive Diseases Division, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China; (Y.W.); (N.J.); (L.F.); (X.N.); (W.Z.); (M.H.); (L.G.); (K.L.); (Y.G.); (C.L.); (H.C.); (A.L.); (Q.P.); (Y.Z.); (X.W.)
- OIE Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China
| | - Mengmeng Huang
- State Key Laboratory of Veterinary Biotechnology, Avian Immunosuppressive Diseases Division, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China; (Y.W.); (N.J.); (L.F.); (X.N.); (W.Z.); (M.H.); (L.G.); (K.L.); (Y.G.); (C.L.); (H.C.); (A.L.); (Q.P.); (Y.Z.); (X.W.)
- OIE Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China
| | - Li Gao
- State Key Laboratory of Veterinary Biotechnology, Avian Immunosuppressive Diseases Division, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China; (Y.W.); (N.J.); (L.F.); (X.N.); (W.Z.); (M.H.); (L.G.); (K.L.); (Y.G.); (C.L.); (H.C.); (A.L.); (Q.P.); (Y.Z.); (X.W.)
- OIE Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China
| | - Kai Li
- State Key Laboratory of Veterinary Biotechnology, Avian Immunosuppressive Diseases Division, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China; (Y.W.); (N.J.); (L.F.); (X.N.); (W.Z.); (M.H.); (L.G.); (K.L.); (Y.G.); (C.L.); (H.C.); (A.L.); (Q.P.); (Y.Z.); (X.W.)
| | - Yulong Gao
- State Key Laboratory of Veterinary Biotechnology, Avian Immunosuppressive Diseases Division, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China; (Y.W.); (N.J.); (L.F.); (X.N.); (W.Z.); (M.H.); (L.G.); (K.L.); (Y.G.); (C.L.); (H.C.); (A.L.); (Q.P.); (Y.Z.); (X.W.)
- OIE Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China
| | - Changjun Liu
- State Key Laboratory of Veterinary Biotechnology, Avian Immunosuppressive Diseases Division, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China; (Y.W.); (N.J.); (L.F.); (X.N.); (W.Z.); (M.H.); (L.G.); (K.L.); (Y.G.); (C.L.); (H.C.); (A.L.); (Q.P.); (Y.Z.); (X.W.)
| | - Hongyu Cui
- State Key Laboratory of Veterinary Biotechnology, Avian Immunosuppressive Diseases Division, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China; (Y.W.); (N.J.); (L.F.); (X.N.); (W.Z.); (M.H.); (L.G.); (K.L.); (Y.G.); (C.L.); (H.C.); (A.L.); (Q.P.); (Y.Z.); (X.W.)
- OIE Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China
| | - Aijing Liu
- State Key Laboratory of Veterinary Biotechnology, Avian Immunosuppressive Diseases Division, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China; (Y.W.); (N.J.); (L.F.); (X.N.); (W.Z.); (M.H.); (L.G.); (K.L.); (Y.G.); (C.L.); (H.C.); (A.L.); (Q.P.); (Y.Z.); (X.W.)
- OIE Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China
| | - Qing Pan
- State Key Laboratory of Veterinary Biotechnology, Avian Immunosuppressive Diseases Division, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China; (Y.W.); (N.J.); (L.F.); (X.N.); (W.Z.); (M.H.); (L.G.); (K.L.); (Y.G.); (C.L.); (H.C.); (A.L.); (Q.P.); (Y.Z.); (X.W.)
| | - Yanping Zhang
- State Key Laboratory of Veterinary Biotechnology, Avian Immunosuppressive Diseases Division, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China; (Y.W.); (N.J.); (L.F.); (X.N.); (W.Z.); (M.H.); (L.G.); (K.L.); (Y.G.); (C.L.); (H.C.); (A.L.); (Q.P.); (Y.Z.); (X.W.)
| | - Xiaomei Wang
- State Key Laboratory of Veterinary Biotechnology, Avian Immunosuppressive Diseases Division, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China; (Y.W.); (N.J.); (L.F.); (X.N.); (W.Z.); (M.H.); (L.G.); (K.L.); (Y.G.); (C.L.); (H.C.); (A.L.); (Q.P.); (Y.Z.); (X.W.)
- OIE Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China
- Jiangsu Co-Innovation Centre for Prevention and Control of Important Animal Infectious Disease and Zoonosis, College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China
| | - Xiaole Qi
- State Key Laboratory of Veterinary Biotechnology, Avian Immunosuppressive Diseases Division, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China; (Y.W.); (N.J.); (L.F.); (X.N.); (W.Z.); (M.H.); (L.G.); (K.L.); (Y.G.); (C.L.); (H.C.); (A.L.); (Q.P.); (Y.Z.); (X.W.)
- OIE Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, China
- Correspondence: ; Tel.: +86-0451-5105-1692
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Development of a Viral-Like Particle Candidate Vaccine Against Novel Variant Infectious Bursal Disease Virus. Vaccines (Basel) 2021; 9:vaccines9020142. [PMID: 33579020 PMCID: PMC7916800 DOI: 10.3390/vaccines9020142] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 01/26/2021] [Accepted: 02/05/2021] [Indexed: 12/25/2022] Open
Abstract
Infectious bursal disease (IBD), an immunosuppressive disease of young chickens, is caused by infectious bursal disease virus (IBDV). Novel variant IBDV (nVarIBDV), a virus that can evade immune protection against very virulent IBDV (vvIBDV), is becoming a threat to the poultry industry. Therefore, nVarIBDV-specific vaccine is much needed for nVarIBDV control. In this study, the VP2 protein of SHG19 (a representative strain of nVarIBDV) was successfully expressed using an Escherichia coli expression system and further purified via ammonium sulfate precipitation and size-exclusion chromatography. The purified protein SHG19-VP2-466 could self-assemble into 25-nm virus-like particle (VLP). Subsequently, the immunogenicity and protective effect of the SHG19-VLP vaccine were evaluated using animal experiments, which indicated that the SHG19-VLP vaccine elicited neutralization antibodies and provided 100% protection against the nVarIBDV. Furthermore, the protective efficacy of the SHG19-VLP vaccine against the vvIBDV was evaluated. Although the SHG19-VLP vaccine induced a comparatively lower vvIBDV-specific neutralization antibody titer, it provided good protection against the lethal vvIBDV. In summary, the SHG19-VLP candidate vaccine could provide complete immune protection against the homologous nVarIBDV as well as the heterologous vvIBDV. This study is of significance to the comprehensive prevention and control of the recent atypical IBD epidemic.
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Wang Z, Mi J, Wang Y, Wang T, Qi X, Li K, Pan Q, Gao Y, Gao L, Liu C, Zhang Y, Wang X, Cui H. Recombinant Lactococcus Expressing a Novel Variant of Infectious Bursal Disease Virus VP2 Protein Can Induce Unique Specific Neutralizing Antibodies in Chickens and Provide Complete Protection. Viruses 2020; 12:v12121350. [PMID: 33255742 PMCID: PMC7760868 DOI: 10.3390/v12121350] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 11/20/2020] [Accepted: 11/23/2020] [Indexed: 12/25/2022] Open
Abstract
Recent reports of infectious bursal disease virus (IBDV) infections in China, Japan, and North America have indicated the presence of variant, and the current conventional IBDV vaccine cannot completely protect against variant IBDV. In this study, we constructed recombinant Lactococcus lactis (r-L. lactis) expressing a novel variant of IBDV VP2 (avVP2) protein along with the Salmonella resistance to complement killing (RCK) protein, and Western blotting analysis confirmed that r-L. lactis successfully expressed avVP2-RCK fusion protein. We immunized chickens with this vaccine and subsequently challenged them with the very virulent IBDV (vvIBDV) and a novel variant wild IBDV (avIBDV) to evaluate the immune effect of the vaccine. The results show that the r-L. lactis-avVP2-RCK-immunized group exhibited a 100% protection rate when challenged with avIBDV and 100% survival rate to vvIBDV. Furthermore, this immunization resulted in the production of unique neutralizing antibodies that cannot be detected by conventional ELISA. These results indicate that r-L. lactis-avVP2-RCK is a promising candidate vaccine against IBDV infections, which can produce unique neutralizing antibodies that cannot be produced by other vaccines and protect against IBDV infection, especially against the variant strain.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | - Xiaomei Wang
- Correspondence: (X.W.); (H.C.); Tel.: +86-0451-5105-1693 (H.C.)
| | - Hongyu Cui
- Correspondence: (X.W.); (H.C.); Tel.: +86-0451-5105-1693 (H.C.)
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26
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Fan L, Wang Y, Jiang N, Gao L, Li K, Gao Y, Cui H, Pan Q, Liu C, Zhang Y, Wang X, Qi X. A reassortment vaccine candidate of the novel variant infectious bursal disease virus. Vet Microbiol 2020; 251:108905. [PMID: 33186757 DOI: 10.1016/j.vetmic.2020.108905] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 10/18/2020] [Indexed: 01/07/2023]
Abstract
Infectious bursal disease (IBD), caused by infectious bursal disease virus (IBDV), is the most important immunosuppressive disease threatening the poultry industry worldwide. Recently, the novel variant IBDV has been emerging in large-scale in Asia including China and is becoming a new threat to the healthy development of the poultry industry, but no ideal vaccine is available. Therefore, it is necessary and urgent to develop a new vaccine against the novel variant IBDV. In this study, based on the skeleton of an attenuated vaccine strain Gt, a reassortment virus strain rGtVarVP2 was constructed for the first time, which could express the main protective antigen VP2 of the novel variant IBDV and replicate well in cell culture. Subsequently, the safety and effectiveness of rGtVarVP2 were further evaluated using animal experiments. The rGtVarVP2 is nonpathogenic to specific-pathogen-free (SPF) chicken. The immunization of rGtVarVP2 could induce the specific neutralizing antibodies against the novel variant IBDV. The challenge protection tests further confirmed the effectiveness of the IBDV reassortment virus rGtVarVP2. No atrophy and obvious lesions were observed in the immunization group while the bursae of non-immunization control group were severely destroyed after challenge, which showed that rGtVarVP2 could provide complete protection against the novel variant IBDV. These data indicate that the vaccine candidate (rGtVarVP2 strain) is safe and effective, which is of great significance for comprehensive control of IBD and healthy breeding.
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Affiliation(s)
- Linjin Fan
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, PR China; OIE Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, PR China
| | - Yulong Wang
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, PR China; OIE Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, PR China
| | - Nan Jiang
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, PR China; OIE Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, PR China
| | - Li Gao
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, PR China; OIE Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, PR China
| | - Kai Li
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, PR China
| | - Yulong Gao
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, PR China; OIE Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, PR China
| | - Hongyu Cui
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, PR China
| | - Qing Pan
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, PR China
| | - Changjun Liu
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, PR China
| | - Yanping Zhang
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, PR China
| | - Xiaomei Wang
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, PR China; OIE Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, PR China; Jiangsu Co-innovation Centre for Prevention and Control of Important Animal Infectious Disease and Zoonose, Yangzhou 225009, PR China.
| | - Xiaole Qi
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, PR China; OIE Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150069, PR China.
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