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Related Experiment Videos

Hes6 regulates myogenic differentiation.

Judy Cossins1, Ann E Vernon, Yun Zhang

  • 1Cancer Research UK, Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, Oxford, UK.

Development (Cambridge, England)
|April 18, 2002
PubMed
Summary
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Hes6, a transcription factor, plays a novel role in muscle formation. It is involved in both early muscle development and the regulation of cell cycle progression during differentiation.

Area of Science:

  • Molecular Biology
  • Developmental Biology
  • Genetics

Background:

  • Hes6 is a transcription factor homologous to Drosophila Enhancer of Split (EoS) proteins.
  • Hes6 interacts with Hes1, a component of the Notch signaling pathway, influencing gene transcription.
  • The precise role of Hes6 in muscle development was not fully understood.

Purpose of the Study:

  • To investigate the role of Hes6 in muscle differentiation and development.
  • To determine the molecular mechanisms by which Hes6 affects myogenesis.
  • To explore the function of Hes6 in both murine and Xenopus models.

Main Methods:

  • Hes6 expression analysis in murine myotomes and C2C12 myoblasts.
  • DNA binding assays to identify Hes6 binding motifs (Enhancer of Split E box - ESE).

Related Experiment Videos

  • Overexpression studies in C2C12 cells to assess differentiation effects.
  • In vivo studies using Xenopus embryos with Hes6 RNA microinjection and mutant analysis.

    • Main Results:

    • Hes6 is expressed in the embryonic myotome and induced during myoblast differentiation.
    • Hes6 binds to the ESE motif and represses transcription.
    • Overexpression of Hes6 in C2C12 cells inhibits differentiation, reduces p21(Cip1) induction, and increases cell cycle re-entry.
    • In Xenopus, Hes6 expands the myotome but suppresses terminal differentiation and disrupts somite formation.
    • Hes6's myogenic phenotype depends on protein-protein interactions, not DNA binding.

    Conclusions:

    • Hes6 plays a significant and novel role in multiple stages of muscle formation.
    • Hes6 acts as a repressor of muscle differentiation and influences cell cycle dynamics.
    • Protein-protein interactions are crucial for Hes6's function in myogenesis.