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BCL6 and BCoR gang up on Notch to regulate left-right patterning
1Ecole Polytechnique Fédérale de Lausanne, Swiss Institute for Experimental Cancer Research, Station 19, 1015 Lausanne, Switzerland.
Developmental Cell
|March 17, 2010
Summary
A novel mechanism reveals how a lymphocyte transcription factor interacts with Notch signaling during embryonic development. This interaction selectively inhibits Notch-activated genes, ensuring correct left-right body patterning.
Area of Science:
- Developmental biology
- Molecular signaling
- Immunology
Background:
- Notch signaling is crucial for embryonic development and cell fate determination.
- Lymphocyte transcription factors play key roles in immune cell development and function.
- Precise regulation of gene expression is essential for establishing left-right asymmetry.
Discussion:
- Sakano et al. elucidate a previously unknown crosstalk between a lymphocyte transcription factor and Notch signaling.
- This interaction demonstrates a mechanism for selective inhibition of Notch-activated target genes.
- The findings highlight the intricate regulatory networks governing embryonic patterning.
Key Insights:
- A specific lymphocyte transcription factor directly modulates Notch pathway activity.
- Selective gene inhibition by this factor is critical for establishing left-right asymmetry.
- This study reveals a novel molecular link between immune system development and body plan formation.
Outlook:
- Further research can explore the broader implications of this crosstalk in other developmental contexts.
- Investigating potential therapeutic targets based on this regulatory mechanism is warranted.
- Understanding this pathway could offer insights into developmental disorders related to asymmetry.
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The Notch signaling pathway is a major intracellular signaling pathway that is highly conserved over a broad spectrum of metazoan species. It stands unique from other intracellular signaling mechanisms in animals because notch protein itself acts as the receptor as well as the primary signaling molecule.
The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not until 1985...
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The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not until 1985...
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