ZFIN ID: ZDB-PUB-200110-4
Zebrafish prmt7 negatively regulates antiviral responses by suppressing the retinoic acid-inducible gene-I-like receptor signaling
Zhu, J., Liu, X., Cai, X., Ouyang, G., Fan, S., Wang, J., Xiao, W.
Date: 2020
Source: FASEB journal : official publication of the Federation of American Societies for Experimental Biology   34: 988-1000 (Journal)
Registered Authors: Ouyang, Gang, Xiao, Wuhan
Keywords: Prmt7, irf3, GCRV, SVCV, zebrafish
MeSH Terms:
  • Animals
  • Gene Expression Regulation
  • Histones/metabolism
  • Immunity, Innate*
  • Interferons/immunology
  • Liver/metabolism
  • Liver/virology
  • Protein Processing, Post-Translational
  • Protein-Arginine N-Methyltransferases/genetics
  • Protein-Arginine N-Methyltransferases/metabolism*
  • Rhabdoviridae
  • Rhabdoviridae Infections/immunology
  • Rhabdoviridae Infections/veterinary*
  • Signal Transduction
  • Zebrafish
  • Zebrafish Proteins/genetics
  • Zebrafish Proteins/metabolism*
PubMed: 31914680 Full text @ FASEB J.
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ABSTRACT
Arginine methylation is a post-translational modification in histone and nonhistone proteins that can affect numerous cellular activities. Protein arginine methyltransferase 7 (Prmt7), a type III arginine methyltransferase, catalyzes the formation of stable monomethylarginines of histones. The role of PRMT7 in virus-induced innate immunity signaling, however, remains largely unknown. We demonstrate that zebrafish prmt7 could be inhibited by spring viremia of carp virus (SVCV) and grass carp reovirus (GCRV) infection. The overexpression of prmt7 suppresses cellular antiviral responses that are partially dependent on the arginine methyltransferase activity of prmt7. Consistently, prmt7-null zebrafish were more resistant to SVCV or GCRV infection, exhibiting enhanced expression of key antiviral genes and fewer necrotic cells in the liver and kidney upon viral infection. Furthermore, we established a zebrafish model to investigate grass carp hemorrhagic disease. Our findings suggest that by suppressing the RIG-I-like receptors signaling, zebrafish prmt7 negatively regulates antiviral responses, indicating the vital role of prmt7 and its arginine methyltransferase activity in innate immunity.
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