XRN1 stalling in the 5' UTR of Hepatitis C virus and Bovine Viral Diarrhea virus is associated with dysregulated host mRNA stability.

Published online

Journal Article

We demonstrate that both Hepatitis C virus (HCV) and Bovine Viral Diarrhea virus (BVDV) contain regions in their 5' UTRs that stall and repress the enzymatic activity of the cellular 5'-3' exoribonuclease XRN1, resulting in dramatic changes in the stability of cellular mRNAs. We used biochemical assays, virus infections, and transfection of the HCV and BVDV 5' untranslated regions in the absence of other viral gene products to directly demonstrate the existence and mechanism of this novel host-virus interaction. In the context of HCV infection, we observed globally increased stability of mRNAs resulting in significant increases in abundance of normally short-lived mRNAs encoding a variety of relevant oncogenes and angiogenesis factors. These findings suggest that non-coding regions from multiple genera of the Flaviviridae interfere with XRN1 and impact post-transcriptional processes, causing global dysregulation of cellular gene expression which may promote cell growth and pathogenesis.

Full Text

Duke Authors

Cited Authors

  • Moon, SL; Blackinton, JG; Anderson, JR; Dozier, MK; Dodd, BJT; Keene, JD; Wilusz, CJ; Bradrick, SS; Wilusz, J

Published Date

  • March 2015

Published In

Volume / Issue

  • 11 / 3

Start / End Page

  • e1004708 -

PubMed ID

  • 25747802

Pubmed Central ID

  • 25747802

Electronic International Standard Serial Number (EISSN)

  • 1553-7374

Digital Object Identifier (DOI)

  • 10.1371/journal.ppat.1004708

Language

  • eng

Conference Location

  • United States