eIF4E is a central node of an RNA regulon that governs cellular proliferation Academic Article uri icon


MeSH Major

  • Cell Cycle Proteins
  • Cell Proliferation
  • Eukaryotic Initiation Factor-4E
  • RNA Transport
  • RNA, Messenger
  • Regulon


  • This study demonstrates that the eukaryotic translation initiation factor eIF4E is a critical node in an RNA regulon that impacts nearly every stage of cell cycle progression. Specifically, eIF4E coordinately promotes the messenger RNA (mRNA) export of several genes involved in the cell cycle. A common feature of these mRNAs is a structurally conserved, approximately 50-nucleotide element in the 3' untranslated region denoted as an eIF4E sensitivity element. This element is sufficient for localization of capped mRNAs to eIF4E nuclear bodies, formation of eIF4E-specific ribonucleoproteins in the nucleus, and eIF4E-dependent mRNA export. The roles of eIF4E in translation and mRNA export are distinct, as they rely on different mRNA elements. Furthermore, eIF4E-dependent mRNA export is independent of ongoing RNA or protein synthesis. Unlike the NXF1-mediated export of bulk mRNAs, eIF4E-dependent mRNA export is CRM1 dependent. Finally, the growth-suppressive promyelocytic leukemia protein (PML) inhibits this RNA regulon. These data provide novel perspectives into the proliferative and oncogenic properties of eIF4E.

publication date

  • November 6, 2006



  • Academic Article



  • eng

PubMed Central ID

  • PMC2064519

Digital Object Identifier (DOI)

  • 10.1083/jcb.200607020

PubMed ID

  • 17074885

Additional Document Info

start page

  • 415

end page

  • 26


  • 175


  • 3