PUBLICATION
Zebrafish MARCH8 downregulates fish IFN response by targeting MITA and TBK1 for protein degradation
- Authors
- Zhao, X., Dan, C., Gong, X.Y., Li, Y.L., Qu, Z.L., Sun, H.Y., An, L.L., Guo, W.H., Gui, J.F., Zhang, Y.B.
- ID
- ZDB-PUB-220629-10
- Date
- 2022
- Source
- Developmental and comparative immunology 135: 104485 (Journal)
- Registered Authors
- Gui, Jian-Fang, Zhang, Yi-Bing
- Keywords
- IFN antiviral Response, MARCH8, Negative regulation, Protein degradation, Zebrafish
- MeSH Terms
-
- Animals
- Antiviral Agents
- Immunity, Innate
- Interferons*/metabolism
- Proteolysis
- Virus Replication
- Zebrafish*
- PubMed
- 35764162 Full text @ Dev. Comp. Immunol.
Citation
Zhao, X., Dan, C., Gong, X.Y., Li, Y.L., Qu, Z.L., Sun, H.Y., An, L.L., Guo, W.H., Gui, J.F., Zhang, Y.B. (2022) Zebrafish MARCH8 downregulates fish IFN response by targeting MITA and TBK1 for protein degradation. Developmental and comparative immunology. 135:104485.
Abstract
Recent studies have related the membrane-associated RING-CH-type finger (MARCH) family proteins to host innate immune response. Zebrafish (Danio rerio) MARCH8 is reported to target SVCV glycoprotein for degradation; however, little is known about whether fish MARCH8 is involved in innate interferon (IFN) response. In this study, zebrafish march8 was significantly induced by SVCV infection. Overexpression of MARCH8 diminished fish IFN-mediated antiviral response, thus promoting the replication of SVCV and GCRV in fish cells. Mechanistically, MARCH8 interacts with and degrades MITA and TBK1 proteins to inhibit IFN response. Moreover, MARCH8 has an E3 ligase activity and enhances MITA and TBK1 polyubiquitination. Our findings reveal a mechanism whereby zebrafish MARCH8 downregulates fish IFN response and facilitates viral replication by targeting MITA and TBK1 for protein degradation.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping