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Arbovirus Infections As Screening Tools for the Identification of Viral Immunomodulators and Host Antiviral Factors
Published on: September 13, 2018
Functional and transcriptome analyses identify CMPK2 as a potential antiviral factor against NNV in Siniperca chuatsi
Chanxia Qin1, Jinlong Huang2, Linmiao Li3
1College of Animal Science and Technology, Guangxi University, Nanning, 530004, China; Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou, 510260, China.
Mandarin fish antiviral defenses against Nervous necrosis virus (NNV) were explored. The study found that CMPK2 restricts NNV replication, highlighting a conserved antiviral response in fish.
Area of Science:
- Aquaculture
- Fish immunology
- Virology
Background:
- Nervous necrosis virus (NNV) severely impacts global aquaculture by causing significant fish mortality.
- The antiviral mechanisms in mandarin fish (Siniperca chuatsi) against NNV are not well understood.
Purpose of the Study:
- To investigate the host antiviral responses of mandarin fish to NNV infection.
- To identify key antiviral genes involved in the host defense against NNV.
Main Methods:
- Transcriptome sequencing of NNV-infected Chinese perch brain (CPB) cells.
- Comparative transcriptomic analysis across teleost species.
- Functional assays to evaluate the antiviral role of CMPK2 in CPB cells and mandarin fish.
Main Results:
- NNV infection induced significant upregulation of interferon-stimulated genes (ISGs) in CPB cells.
- A conserved set of ISGs, including CMPK2, were identified across teleost species during NNV infection.
- Overexpression of CMPK2 inhibited NNV replication and increased interferon-related gene expression in CPB cells.
Conclusions:
- CMPK2 plays a crucial role in restricting NNV infection in Siniperca chuatsi.
- A conserved interferon-responsive antiviral module is present in teleost fish.
- CMPK2 is identified as a potential antiviral effector against NNV in mandarin fish.
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