Mammalian Staufen1 recruits Upf1 to specific mRNA 3′UTRs so as to elicit mRNA decay

Yoon Ki Kim, Luc Furic, Luc DesGroseillers, Lynne E. Maquat

Research output: Contribution to journalArticle

318 Citations (Scopus)

Abstract

Mammalian Staufen (Stau)1 is an RNA binding protein that is thought to function in mRNA transport and translational control. Nonsense-mediated mRNA decay (NMD) degrades abnormal and natural mRNAs that terminate translation sufficiently upstream of a splicing-generated exon-exon junction. Here we describe an mRNA decay mechanism that involves Stau1, the NMD factor Upf1, and a termination codon. Unlike NMD, this mechanism does not involve pre-mRNA splicing and occurs when Upf2 or Upf3X is downregulated. Stau1 binds directly to Upf1 and elicits mRNA decay when tethered downstream of a termination codon. Stau1 also interacts with the 3′-untranslated region of ADP-ribosylation factor (Arf)1 mRNA. Accordingly, downregulating either Stau1 or Upf1 increases Arf1 mRNA stability. These findings suggest that Arf1 mRNA is a natural target for Stau1-mediated decay, and data indicate that other mRNAs are also natural targets. We discuss this pathway as a means for cells to downregulate the expression of Stau1 binding transcripts.

Original languageEnglish
Pages (from-to)195-208
Number of pages14
JournalCell
Volume120
Issue number2
DOIs
Publication statusPublished - 2005 Jan 28
Externally publishedYes

Fingerprint

Nonsense Mediated mRNA Decay
RNA Stability
Messenger RNA
Down-Regulation
Terminator Codon
Exons
ADP-Ribosylation Factor 1
RNA-Binding Proteins
RNA Precursors
Protein Biosynthesis
3' Untranslated Regions

ASJC Scopus subject areas

  • Cell Biology
  • Molecular Biology

Cite this

Mammalian Staufen1 recruits Upf1 to specific mRNA 3′UTRs so as to elicit mRNA decay. / Kim, Yoon Ki; Furic, Luc; DesGroseillers, Luc; Maquat, Lynne E.

In: Cell, Vol. 120, No. 2, 28.01.2005, p. 195-208.

Research output: Contribution to journalArticle

Kim, Yoon Ki ; Furic, Luc ; DesGroseillers, Luc ; Maquat, Lynne E. / Mammalian Staufen1 recruits Upf1 to specific mRNA 3′UTRs so as to elicit mRNA decay. In: Cell. 2005 ; Vol. 120, No. 2. pp. 195-208.
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