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DCC and netrins

J G Culotti1, D C Merz

  • 1Department of Molecular and Medical Genetics, Faculty of Medicine, University of Toronto, Canada. culotti@mshri.on.ca

Current Opinion in Cell Biology
|November 18, 1998
PubMed
Summary

Netrins are versatile guidance molecules involved in axon and cell migration. Studies in worms, flies, and mice show netrins function both locally and long-range, with the DCC receptor mediating attraction and repulsion.

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Area of Science:

  • Neuroscience
  • Developmental Biology
  • Cell Biology

Background:

  • Axon and cell migration are crucial for nervous system development.
  • Netrins are conserved guidance cues essential for these processes.
  • The netrin receptor DCC plays a key role in mediating cellular responses.

Purpose of the Study:

  • To explore the multifaceted roles of netrins in axon and cell migration.
  • To investigate the local and long-range functions of netrins.
  • To understand the dual attractive and repulsive signaling capabilities of the DCC receptor.

Main Methods:

  • Analysis of netrin mutant phenotypes across different model organisms (worm, fly, mouse).
  • Comparative studies of netrin function in various developmental contexts.
  • Examination of signaling mechanisms mediated by the DCC receptor.

Main Results:

  • Netrins exhibit significant versatility and complexity in guiding cell and axon migration.
  • Evidence suggests netrins operate through both local and long-range signaling mechanisms.
  • The netrin receptor DCC demonstrates the capacity to elicit both attractive and repulsive cellular responses.

Conclusions:

  • Netrins are highly conserved and play critical roles in neural development.
  • Netrin signaling involves complex interactions and diverse functions.
  • The DCC receptor is a key mediator of bidirectional netrin responses, highlighting its importance in precise cellular navigation.

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