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Ren S, Zhang Y, Gao X, Wang X, Tong L, Wang S, Sun Y, Yin X, Chen H. Platform establishment of the Cre-loxP recombination system for genetic manipulation of the Lumpy skin disease virus. Vet Microbiol 2024; 294:110122. [PMID: 38772074 DOI: 10.1016/j.vetmic.2024.110122] [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: 01/30/2024] [Revised: 05/13/2024] [Accepted: 05/15/2024] [Indexed: 05/23/2024]
Abstract
Lumpy skin disease virus (LSDV) is a rapidly emerging pathogen in Asia, including China. Genetic manipulation of the LSDV is essential for the elucidation of the pathogenic mechanism and biological function of the LSDV-encoded protein. In this study, we established a platform for the Cre-loxP recombination system under a modified early-late H5 promoter of the VACV for quick construction of the recombinant LSDV virus. The recombinant virus, LSDV-EGFP-ΔTK, was purified and obtained using serial limited dilution and picking the single cells methods. Using the lentiviral package system, a Cre recombinase enzyme stable expression MDBK cell line was established to supply the Cre recombinase for the reporter gene excision. A genetically stable, safe TK gene-deleted LSDV (LSDV-ΔTK) was constructed using homologous recombination and the Cre-loxP system. It was purified using limited dilution in the MDBK-Cre cell line. Establishing the Cre-loxP recombination system will enable sequential deletion of the interested genes from the LSDV genome and genetic manipulation of the LSDV genome, providing technical support and a platform for developing the attenuated LSDV vaccine.
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Affiliation(s)
- Shanhui Ren
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, PR China
| | - Yuzhe Zhang
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, PR China
| | - Xiaolong Gao
- College of Agriculture and Animal Husbandry, Qinghai University, Xining, Qinghai 810016, PR China
| | - Xiangwei Wang
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, PR China
| | - Lina Tong
- College of Agriculture and Animal Husbandry, Qinghai University, Xining, Qinghai 810016, PR China
| | - Shasha Wang
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, PR China
| | - Yuefeng Sun
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, PR China.
| | - Xiangping Yin
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, PR China.
| | - Haotai Chen
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, PR China.
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Skinner MA, Laidlaw SM, Eldaghayes I, Kaiser P, Cottingham MG. Fowlpox virus as a recombinant vaccine vector for use in mammals and poultry. Expert Rev Vaccines 2014; 4:63-76. [PMID: 15757474 DOI: 10.1586/14760584.4.1.63] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Live vaccines against fowlpox virus, which causes moderate pathology in poultry and is the type species of the Avipoxvirus genus, were developed in the 1920s. Development of recombinant fowlpox virus vector vaccines began in the 1980s, for use not only in poultry, but also in mammals including humans. In common with other avipoxviruses, such as canarypox virus, fowlpox virus enters mammalian cells and expresses proteins, but replicates abortively. The use of fowlpox virus as a safe vehicle for expression of foreign antigens and host immunomodulators, is being evaluated in numerous clinical trials of vaccines against cancer, malaria, tuberculosis and AIDS, notably in heterologous prime-boost regimens. In this article, technical approaches to, and issues surrounding, the use of fowlpox virus as a recombinant vaccine vector in poultry and mammals are reviewed.
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Affiliation(s)
- Michael A Skinner
- Institute for Animal Health, Compton, Newbury, Berkshire, RG20 7NN, UK.
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Abstract
Poxviruses identified in skin lesions of domestic, pet or wild birds are assigned largely by default to the Avipoxvirus genus within the subfamily Chordopoxvirinae of the family Poxviridae. Avipoxviruses have been identified as the causative agent of disease in at least 232 species in 23 orders of birds. Vaccines based upon attenuated avipoxvirus strains provide good disease control in production poultry, although with the large and intensive production systems there are suggestions and real risks of emergence of strains against which current vaccines might be ineffective. Sequence analysis of the whole genome has revealed overall genome structure and function resemblance to the Chordopoxvirinae; however, avipoxvirus genomes exhibit large-scale genomic rearrangements with more extensive gene families and novel host range gene in comparison with the other Chordopoxvirinae. Phylogenetic analysis places the avipoxviruses externally to the Chorodopoxvirinae to such an extent that in the future it might be appropriate to consider the Avipoxviruses as a separate subfamily within the Poxviridae. A unique relationship exists between Fowlpox virus (FWPV) and reticuloendothelosis viruses. All FWPV strains carry a remnant long terminal repeat, while field strains carry a near full-length provirus integrated at the same location in the FWPV genome. With the development of techniques to construct poxviruses expressing foreign vaccine antigens, the avipoxviruses have gone from neglected obscurity to important vaccine vectors in the past 20 years. The seminal observation of their utility for delivery of vaccine antigens to non-avian species has driven much of the interest in this group of viruses. In the veterinary area, several recombinant avipoxviruses are commercially licensed vaccines. The most successful have been those expressing glycoprotein antigens of enveloped viruses, e.g. avian influenza, Newcastle diseases and West Nile viruses. Several recombinants have undergone extensive human clinical trials as experimental vaccines against HIV/AIDS and malaria or as treatment regimens in cancer patients. The safety profile of avipoxvirus recombinants for use as veterinary and human vaccines or therapeutics is now well established.
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Affiliation(s)
- Andrew A. Mercer
- Department of Microbiology, University of Otago, 56, 700 Cumberland Street, Dunedin, New Zealand
| | - Axel Schmidt
- Faculty of Medicine, University Witten/Herdecke, Alfred-Herrhausen-Str. 50, 58448 Witten, Germany
| | - Olaf Weber
- BAYER HEALTHCARE AG, Product-related Research, 42096 Wuppertal, Germany
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Mehdy Elahi S, Bergeron J, Nagy E, Talbot BG, Harpin S, Shen SH, Elazhary Y. Induction of humoral and cellular immune responses in mice by a recombinant fowlpox virus expressing the E2 protein of bovine viral diarrhea virus. FEMS Microbiol Lett 1999; 171:107-14. [PMID: 10077834 DOI: 10.1111/j.1574-6968.1999.tb13419.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
A recombinant fowlpox virus (rFPV/E2) expressing the E2 protein of bovine viral diarrhea virus (BVDV) was constructed and characterized. Mice were immunized with recombinant virus and both humoral and cellular immune responses were studied. rFPV/E2 induced BVDV-specific antibodies which were detected by ELISA. In addition, mouse sera were shown to neutralize BVDV. A cytokine ELISA assay revealed that mice vaccinated with rFPV/E2 induced 7-fold more interferon-gamma than parental fowlpox virus.
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MESH Headings
- Animals
- Antibodies, Monoclonal
- Antibodies, Viral/blood
- B-Lymphocytes/immunology
- B-Lymphocytes/virology
- Cells, Cultured
- Chick Embryo
- Cloning, Molecular
- Diarrhea Viruses, Bovine Viral/genetics
- Diarrhea Viruses, Bovine Viral/immunology
- Enzyme-Linked Immunosorbent Assay
- Fowlpox virus/genetics
- Fowlpox virus/immunology
- Gene Expression Regulation, Viral
- Immunization
- Interferon-gamma/immunology
- Leukocytes, Mononuclear/immunology
- Leukocytes, Mononuclear/virology
- Mice
- Mice, Inbred BALB C
- Plasmids
- Recombinant Fusion Proteins/immunology
- Viral Envelope Proteins/genetics
- Viral Envelope Proteins/immunology
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Affiliation(s)
- S Mehdy Elahi
- Virology Section, Faculty of Veterinary Medicine, University of Montreal, Saint-Hyacinthe, Que., Canada
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