A viral microRNA down-regulates multiple cell cycle genes through mRNA 59′UTRs

Finn Grey, Rebecca Tirabassi, Heather Meyers, Guanming Wu, Shannon McWeeney, Lauren Hook, Jay A. Nelson

Research output: Contribution to journalArticle

145 Scopus citations

Abstract

Global gene expression data combined with bioinformatic analysis provides strong evidence that mammalian miRNAs mediate repression of gene expression primarily through binding sites within the 39 untranslated region (UTR). Using RNA induced silencing complex immunoprecipitation (RISC-IP) techniques we have identified multiple cellular targets for a human cytomegalovirus (HCMV) miRNA, miR-US25-1. Strikingly, this miRNA binds target sites primarily within 59′UTRs, mediating significant reduction in gene expression. Intriguingly, many of the genes targeted by miR-US25-1 are associated with cell cycle control, including cyclin E2, BRCC3, EID1, MAPRE2, and CD147, suggesting that miR-US25-1 is targeting genes within a related pathway. Deletion of miR-US25-1 from HCMV results in over expression of cyclin E2 in the context of viral infection. Our studies demonstrate that a viral miRNA mediates translational repression of multiple cellular genes by targeting mRNA 59′UTRs.

Original languageEnglish (US)
JournalPLoS pathogens
Volume6
Issue number6
DOIs
StatePublished - Jun 2010

ASJC Scopus subject areas

  • Parasitology
  • Microbiology
  • Immunology
  • Molecular Biology
  • Genetics
  • Virology

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