TRIM41-Mediated Ubiquitination of Nucleoprotein Limits Vesicular Stomatitis Virus Infection

Vesicular stomatitis virus (VSV) is a zoonotic, negative-stranded RNA virus of the family Rhabdoviridae. The nucleoprotein (N) of VSV protects the viral genomic RNA and plays an essential role in viral transcription and replication, which makes the nucleoprotein an ideal target of host defense. Howe...

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Bibliographic Details
Published in:Viruses 2020-01, Vol.12 (2), p.131
Main Authors: Patil, Girish, Xu, Lingling, Wu, Yakun, Song, Kun, Hao, Wenzhuo, Hua, Fang, Wang, Lingyan, Li, Shitao
Format: Article
Language:English
Subjects:
Cell Line
HEK293 Cells
host defense
Humans
Immunity, Innate
intrinsic immunity
Nucleocapsid Proteins - chemistry
Nucleocapsid Proteins - genetics
proteasomal degradation
Proteasome Endopeptidase Complex - metabolism
Proteolysis
trim
Ubiquitin-Protein Ligases - genetics
Ubiquitin-Protein Ligases - metabolism
Ubiquitination
Vesicular stomatitis Indiana virus - genetics
Vesicular stomatitis Indiana virus - pathogenicity
Virus Replication
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Summary:Vesicular stomatitis virus (VSV) is a zoonotic, negative-stranded RNA virus of the family Rhabdoviridae. The nucleoprotein (N) of VSV protects the viral genomic RNA and plays an essential role in viral transcription and replication, which makes the nucleoprotein an ideal target of host defense. However, whether and how host innate/intrinsic immunity limits VSV infection by targeting the N protein are unknown. In this study, we found that the N protein of VSV (VSV-N) interacted with a ubiquitin E3 ligase, tripartite motif protein 41 (TRIM41). Overexpression of TRIM41 inhibited VSV infection. Conversely, the depletion of TRIM41 increased host susceptibility to VSV. Furthermore, the E3 ligase defective mutant of TRIM41 failed to limit VSV infection, suggesting the requirement of the E3 ligase activity of TRIM41 in viral restriction. Indeed, TRIM41 ubiquitinated VSV-N in cells and in vitro. TRIM41-mediated ubiquitination leads to the degradation of VSV-N through proteasome, thereby limiting VSV infection. Taken together, our study identifies TRIM41 as a new intrinsic immune factor against VSV by targeting the viral nucleoprotein for ubiquitination and subsequent protein degradation.
ISSN:1999-4915
1999-4915
DOI:10.3390/v12020131