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Updated: May 15, 2026
08:01
Stimulation of Notch Signaling in Mouse Osteoclast Precursors
Published on: February 28, 2017
Notch cooperates with Lozenge/Runx to lock haemocytes into a differentiation programme
Ana Terriente-Felix1, Jinghua Li, Stephanie Collins
1Department of Physiology Development and Neuroscience, University of Cambridge, Downing Street, Cambridge CB2 3DY, UK. sjb32@cam.ac.uk
Development (Cambridge, England)
|January 18, 2013
Summary
Notch signaling directs cell differentiation by regulating specific genes. The Runx protein Lozenge (Lz) is crucial for Notch to activate target genes, ensuring proper cell fate and development.
Area of Science:
- Developmental Biology
- Genetics
- Molecular Biology
Background:
- Notch signaling is essential for diverse cellular functions, requiring context-specific gene expression programs.
- Understanding how Notch signaling drives cell differentiation is critical for developmental processes.
Purpose of the Study:
- To identify direct Notch targets in Drosophila haemocytes to understand Notch-driven differentiation.
- To investigate the role of the Runx protein Lozenge (Lz) in Notch-mediated gene regulation.
Main Methods:
- Genome-wide analysis to identify direct Notch targets in Drosophila haemocytes.
- Functional studies of target genes like klumpfuss and pebbled/hindsight.
- Analysis of Runx and GATA motifs in Notch-regulated enhancers.
Main Results:
- Identified direct Notch targets in Drosophila haemocytes, many containing Runx and GATA motifs.
- Demonstrated that Lozenge (Lz) binding is required for Notch-responsive enhancers.
- Showed that Notch targets, such as klumpfuss, regulate cell fate and differentiation characteristics.
Conclusions:
- Lozenge (Lz) acts as a master regulator, directing Notch to activate specific target genes for cell differentiation.
- Notch signaling, mediated by Lz, prevents alternative cell fates and promotes crystal cell differentiation.
- Aberrant Klumpfuss activity disrupts differentiation, leading to tumor formation, highlighting the precision of this regulatory network.
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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...
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...
03:14Notch Signaling Pathway
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...
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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