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Wu X, Shi Y, Yan D, Li X, Yan P, Gao X, Zhang Y, Yu L, Ren C, Li G, Yan L, Teng Q, Li Z. Development of a PCR-Based Reverse Genetics System for an Attenuated Duck Tembusu Virus Strain. PLoS One 2016; 11:e0156579. [PMID: 27248497 PMCID: PMC4889061 DOI: 10.1371/journal.pone.0156579] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Accepted: 05/17/2016] [Indexed: 01/08/2023] Open
Abstract
The infectious disease caused by the duck Tembusu virus (DTMUV) has resulted in massive economic losses to the Chinese duck industry in China since 2010. Research on the molecular basis of DTMUV pathogenicity has been hampered by the lack of a reliable reverse genetics system for this virus. Here we developed a PCR-based reverse genetics system with high fidelity for the attenuated DTMUV strain FX2010-180P. The rescued virus was characterized by using both indirect immunofluorescence assays (IFA) and whole genome sequencing. The rescued virus (rFX2010-180P) grew to similar titers as compared with the wild-type virus in DF-1 cells, and had similar replication and immunogenicity properties in ducks. To determine whether exogenous proteins could be expressed from DTMUV, both an internal ribosomal entry site (IRES) and the enhanced green fluorescent protein (eGFP) gene were introduced between the NS5 gene and the 3' non-coding sequence of FX2010-180P. A recombinant DTMUV expressing eGFP was rescued, but eGFP expression was unstable after 4 passages in DF-1 cells due to a deletion of 1,294 nucleotides. The establishment of a reliable reverse genetics system for FX2010-180P provides a foundation for future studies of DTMUV.
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Affiliation(s)
- Xiaogang Wu
- Department of Avian Infectious Disease, and Innovation Team for Pathogen Ecology Research on Animal Influenza Virus, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Science, Shanghai, China
| | - Ying Shi
- Department of Avian Infectious Disease, and Innovation Team for Pathogen Ecology Research on Animal Influenza Virus, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Science, Shanghai, China
| | - Dawei Yan
- Department of Avian Infectious Disease, and Innovation Team for Pathogen Ecology Research on Animal Influenza Virus, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Science, Shanghai, China
| | - Xuesong Li
- Department of Avian Infectious Disease, and Innovation Team for Pathogen Ecology Research on Animal Influenza Virus, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Science, Shanghai, China
| | - Pixi Yan
- Department of Avian Infectious Disease, and Innovation Team for Pathogen Ecology Research on Animal Influenza Virus, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Science, Shanghai, China
| | - Xuyuan Gao
- Department of Avian Infectious Disease, and Innovation Team for Pathogen Ecology Research on Animal Influenza Virus, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Science, Shanghai, China
| | - Yuee Zhang
- Department of Avian Infectious Disease, and Innovation Team for Pathogen Ecology Research on Animal Influenza Virus, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Science, Shanghai, China
| | - Lei Yu
- Department of Avian Infectious Disease, and Innovation Team for Pathogen Ecology Research on Animal Influenza Virus, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Science, Shanghai, China
| | - Chaochao Ren
- Department of Avian Infectious Disease, and Innovation Team for Pathogen Ecology Research on Animal Influenza Virus, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Science, Shanghai, China
| | - Guoxin Li
- Department of Avian Infectious Disease, and Innovation Team for Pathogen Ecology Research on Animal Influenza Virus, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Science, Shanghai, China
| | - Liping Yan
- Department of Avian Infectious Disease, and Innovation Team for Pathogen Ecology Research on Animal Influenza Virus, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Science, Shanghai, China
| | - Qiaoyang Teng
- Department of Avian Infectious Disease, and Innovation Team for Pathogen Ecology Research on Animal Influenza Virus, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Science, Shanghai, China
| | - Zejun Li
- Department of Avian Infectious Disease, and Innovation Team for Pathogen Ecology Research on Animal Influenza Virus, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Science, Shanghai, China
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