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Related Experiment Videos

Tbx6-mediated Notch signaling controls somite-specific Mesp2 expression.

Yukuto Yasuhiko1, Seiki Haraguchi, Satoshi Kitajima

  • 1Cellular and Molecular Toxicology Division, National Institute of Health Sciences, Kamiyoga 1-18-1, Setagaya-ku, Tokyo 158-8501, Japan.

Proceedings of the National Academy of Sciences of the United States of America
|March 1, 2006
PubMed
Summary

T-box transcription factor Tbx6 is crucial for Mesp2 expression during somitogenesis. Tbx6 regulates Mesp2 transcription via Notch signaling in the anterior presomitic mesoderm, uncovering a new regulatory mechanism.

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Area of Science:

  • Developmental Biology
  • Molecular Biology
  • Genetics

Background:

  • Mesp2 is a transcription factor vital for somitogenesis, with expression confined to the anterior presomitic mesoderm.
  • The segmentation clock involves transcriptional cycles regulating somitogenesis.
  • Understanding the regulation of Mesp2 is key to deciphering somitogenesis mechanisms.

Purpose of the Study:

  • To investigate the role of T-box transcription factor Tbx6 in regulating Mesp2 expression.
  • To elucidate the mechanism by which Tbx6 influences Mesp2 transcription.
  • To identify new components in the signaling network controlling somitogenesis.

Main Methods:

  • Analysis of gene expression patterns.
  • Chromatin immunoprecipitation assays to assess Tbx6 binding to the Mesp2 gene.

Related Experiment Videos

  • Investigation of Notch signaling pathway involvement.

    • Main Results:

    • Tbx6 directly binds to the upstream regulatory region of the Mesp2 gene.
    • Tbx6 mediates Notch signaling, which is essential for Mesp2 transcription.
    • Tbx6 acts upstream of Mesp2, influencing its expression in the anterior presomitic mesoderm.

    Conclusions:

    • Tbx6 is essential for Mesp2 expression, acting through direct binding and Notch signaling.
    • A Tbx6-dependent Notch signaling pathway regulates Mesp2 transcription.
    • This study reveals an additional layer of regulation in the complex network governing somitogenesis.