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Notch signaling

S Artavanis-Tsakonas1, K Matsuno, M E Fortini

  • 1Howard Hughes Medical Institute, Boyer Center for Molecular Medicine, Yale University, New Haven, CT 06536, USA.

Science (New York, N.Y.)
|April 14, 1995
PubMed
Summary

The Notch/Lin-12/Glp-1 receptor family is crucial for cell fate specification in development. This signaling pathway involves cell-surface interactions and may transmit signals directly to the nucleus, impacting development and disease.

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Area of Science:

  • Developmental Biology
  • Cell Signaling
  • Genetics

Background:

  • The Notch/Lin-12/Glp-1 receptor family plays a key role in cell fate determination during development.
  • These receptors mediate local cell signaling through interactions between equivalent and different cell types.

Purpose of the Study:

  • To investigate the molecular mechanisms of Notch signaling in cell fate specification.
  • To identify components of the Notch signaling pathway and their functions.

Main Methods:

  • Genetic approaches in Drosophila and Caenorhabditis elegans.
  • Analysis of receptor expression, mutant phenotypes, and consequences of unregulated receptor activation.

Main Results:

  • Identified conserved extracellular ligands and intracellular factors associated with the Notch pathway.
  • The Drosophila Suppressor of Hairless protein, a DNA-binding protein, suggests nuclear involvement in Notch signaling.

Conclusions:

  • Notch signaling is a fundamental mechanism for cell fate specification across species.
  • The pathway involves cell-surface interactions and potentially direct signal transmission to the nucleus.
  • Vertebrate Notch receptors are implicated in development and tumorigenesis.

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