Related Experiment Video
Updated: Jun 20, 2026
10:59
Analysis of Translation Initiation During Stress Conditions by Polysome Profiling
Published on: May 19, 2014
EJCs at the heart of translational control
Hervé Le Hir1, Bertrand Séraphin
1Equipe Labelisée La Ligue, Centre de Génétique Moléculaire, CNRS UPR 2167, 91198 Gif-sur-Yvette, France.
Cell
|April 22, 2008
Summary
The exon junction complex (EJC) in mammalian cells influences mRNA translation. One study shows EJC activates translation via mTOR signaling, while another reveals EJC partners repress translation through nonsense-mediated decay (NMD).
Area of Science:
- Molecular Biology
- Cell Biology
- Genetics
Background:
- The exon junction complex (EJC) is deposited on mRNA during splicing in mammalian cells.
- The EJC plays a role in various post-transcriptional RNA processes.
Discussion:
- Two independent studies reveal the EJC's dual role in translational control.
- One study links EJC to translation activation downstream of the mTOR pathway.
- The other study implicates EJC partners in translation repression via nonsense-mediated decay (NMD).
Key Insights:
- The EJC is a key regulator of mRNA translation.
- EJC's influence on translation is context-dependent, involving both activation and repression.
- Links between splicing, translation, and mRNA decay pathways are further elucidated.
Outlook:
- Further investigation into EJC-mediated translational control mechanisms is warranted.
- Understanding these pathways could offer new therapeutic targets for diseases related to gene expression.
- Exploring the interplay between EJC, mTOR, and NMD pathways will deepen our knowledge of post-transcriptional regulation.
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