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Updated: Nov 7, 2025

Analysis of mRNA Nuclear Export Kinetics in Mammalian Cells by Microinjection
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Analysis of mRNA Nuclear Export Kinetics in Mammalian Cells by Microinjection

Published on: December 4, 2010

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Choosing the right exit: How functional plasticity of the nuclear pore drives selective and efficient mRNA export

Pierre Bensidoun1,2, Daniel Zenklusen2, Marlene Oeffinger1,2,3

  • 1Systems Biology, Institut de Recherches Cliniques de Montréal, Montréal, Canada.

Wiley Interdisciplinary Reviews. RNA
|May 3, 2021
PubMed

Insights

Nuclear pore complexes (NPCs) regulate mRNA export. This review explores how mRNA processing and NPC heterogeneity, including the nuclear basket, influence export competence and nuclear-cytoplasmic transport.

Area of Science:

  • Molecular Biology
  • Cell Biology
  • Biochemistry

Background:

  • The nuclear pore complex (NPC) is the primary gateway for mRNA export from the nucleus to the cytoplasm.
  • mRNA export competence is intrinsically linked to upstream nuclear processes like co-transcriptional RNP assembly and processing.

Purpose of the Study:

  • To review the interconnected processes of nuclear mRNA metabolism that mediate export competence.
  • To examine the heterogeneity of the NPC and its role in selective mRNA transport.

Main Methods:

  • Literature review of current research on mRNA metabolism and NPC structure.
  • Analysis of studies investigating NPC composition and functional plasticity.
  • Examination of the nuclear basket's role in mRNA export regulation.

Main Results:

  • Evidence suggests NPCs are more heterogeneous than previously thought, impacting mRNA export.
  • The nuclear basket and associated complexes play a crucial role in regulating selective binding and transport through the NPC.
  • Functional plasticity in mRNA export is conferred by NPC heterogeneity.

Conclusions:

  • Nuclear mRNA metabolism and NPC heterogeneity are critical for regulating mRNA export competence.
  • Understanding NPC heterogeneity offers insights into the selective and efficient transport of mRNA.
  • Further research into NPC structure and function can elucidate mechanisms of nuclear export.
Keywords:
Mlp1NPC heterogeneityTPRTREX-2export competencyexport efficiencyexport selectivitygene gatingkinetic proofreadingmRNA exportnuclear basketnuclear organizationnuclear pore complexnuclear retention

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