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Yu Y, Tang X, Duan C, Suo J, Crouch C, Zhang S, Liu X, Liu J, Bruton B, Tarpey I, Suo X. Microneme-located VP2 in Eimeria acervulina elicits effective protective immunity against infectious bursal disease virus. Infect Immun 2024; 92:e0045623. [PMID: 38179959 PMCID: PMC10863409 DOI: 10.1128/iai.00456-23] [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: 11/03/2023] [Accepted: 12/01/2023] [Indexed: 01/06/2024] Open
Abstract
Using transgenic Eimeria spp. to deliver exogenous antigens is a viable option for developing multivalent live vaccines. Previous research revealed that the location of antigen expression in recombinant Eimeria dictates the magnitude and type of immune responses. In this study, we constructed genetically modified Eimeria acervulina that expressed VP2 protein, a protective antigen from infectious bursal disease virus (IBDV), on the surface or in the microneme of sporozoites. After vaccination, VP2-specific antibody was readily detected in specific pathogen-free chickens receiving transgenic E. acervulina parasites expressing VP2 in microneme, but animals vaccinated with which expressing VP2 on surface failed to produce detectable antibody after two times immunizations. Moreover, the bursal lesion of microneme-located VP2 transgenic E. acervulina immunized chickens was less severe compared with un-immunized animals after IBDV challenge infection. Therefore, genetically modified E. acervulina that express IBDV-derived VP2 in micronemes are effective in inducing specific antibody responses against VP2, while parasites that have VP2 expression on cell surface are not suitable. Thus, the use of Eimeria parasites as vaccine vectors needs to consider the proper targeting of exogenous immunogens. Our results have implications for the design of other vector vaccines.
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Affiliation(s)
- Ying Yu
- National Key Laboratory of Veterinary Public Health and Safety, Beijing, China
- Key Laboratory of Animal Epidemiology and Zoonosis of Ministry of Agriculture, Beijing, China
- National Animal Protozoa Laboratory & College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Xinming Tang
- Key Laboratory of Animal Biosafety Risk Prevention and Control (North) of MARA, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Bejing, China
| | - Chunhui Duan
- National Key Laboratory of Veterinary Public Health and Safety, Beijing, China
- Key Laboratory of Animal Epidemiology and Zoonosis of Ministry of Agriculture, Beijing, China
- National Animal Protozoa Laboratory & College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Jingxia Suo
- National Key Laboratory of Veterinary Public Health and Safety, Beijing, China
- Key Laboratory of Animal Epidemiology and Zoonosis of Ministry of Agriculture, Beijing, China
- National Animal Protozoa Laboratory & College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Colin Crouch
- MSD Animal Health, Walton Manor, Milton Keynes, United Kingdom
| | - Sixin Zhang
- National Key Laboratory of Veterinary Public Health and Safety, Beijing, China
- Key Laboratory of Animal Epidemiology and Zoonosis of Ministry of Agriculture, Beijing, China
- National Animal Protozoa Laboratory & College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Xianyong Liu
- National Key Laboratory of Veterinary Public Health and Safety, Beijing, China
- Key Laboratory of Animal Epidemiology and Zoonosis of Ministry of Agriculture, Beijing, China
- National Animal Protozoa Laboratory & College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Jie Liu
- National Key Laboratory of Veterinary Public Health and Safety, Beijing, China
- Key Laboratory of Animal Epidemiology and Zoonosis of Ministry of Agriculture, Beijing, China
- National Animal Protozoa Laboratory & College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Beth Bruton
- MSD Animal Health, Walton Manor, Milton Keynes, United Kingdom
| | - Ian Tarpey
- MSD Animal Health, Walton Manor, Milton Keynes, United Kingdom
| | - Xun Suo
- National Key Laboratory of Veterinary Public Health and Safety, Beijing, China
- Key Laboratory of Animal Epidemiology and Zoonosis of Ministry of Agriculture, Beijing, China
- National Animal Protozoa Laboratory & College of Veterinary Medicine, China Agricultural University, Beijing, China
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Escalante-Sansores AR, Absalón AE, Cortés-Espinosa DV. Improving immunogenicity of poultry vaccines by use of molecular adjuvants. WORLD POULTRY SCI J 2022. [DOI: 10.1080/00439339.2022.2091502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
| | - Angel E. Absalón
- Vaxbiotek SC Departamento de Investigación y Desarrollo, Cuautlancingo, Puebla, Mexico
| | - Diana V. Cortés-Espinosa
- Instituto Politécnico Nacional, Centro de Investigación en Biotecnología Aplicadla, Tlaxcala, Mexico
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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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