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Related Experiment Videos

SF2/ASF TORCs up translation.

Martin Bushell1, Mark Stoneley, Keith A Spriggs

  • 1School of Pharmacy, Centre for Biomolecular Sciences, University of Nottingham, University Park, NG7 2RD Nottingham, UK.

Molecular Cell
|May 13, 2008
PubMed
Summary
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SF2/ASF, a splicing factor, enhances protein production by linking the mammalian target of rapamycin (mTOR) pathway to specific messenger RNAs (mRNAs). This discovery reveals a new mechanism controlling gene expression at the translation level.

Area of Science:

  • Molecular Biology
  • Gene Expression Regulation
  • RNA Splicing and Translation

Background:

  • Splicing factors play crucial roles in post-transcriptional gene regulation.
  • Translation initiation is a key step in protein synthesis.
  • The mammalian target of rapamycin (mTOR) pathway is a central regulator of cell growth and metabolism.

Purpose of the Study:

  • To investigate the role of the splicing factor SF2/ASF in translation initiation.
  • To identify the molecular mechanism by which SF2/ASF influences translation.
  • To determine if SF2/ASF interacts with key regulators of translation, such as mTOR.

Main Methods:

  • Western blotting to detect protein levels.
  • Immunoprecipitation to study protein-protein interactions.

Related Experiment Videos

  • Reporter assays to measure mRNA translation efficiency.
  • Analysis of SF2/ASF and mTOR co-localization in cells.

    • Main Results:

    • SF2/ASF directly binds to and recruits mTOR to specific messenger RNAs (mRNAs).
    • This recruitment enhances the translation initiation of a subset of mRNAs.
    • SF2/ASF-mediated recruitment of mTOR is crucial for efficient translation of these target mRNAs.

    Conclusions:

    • SF2/ASF acts as a direct link between RNA splicing machinery and the mTOR pathway.
    • This interaction provides a novel mechanism for regulating translation initiation.
    • The findings highlight a coordinated regulation of gene expression involving splicing and translation control.