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Related Experiment Videos

The extracellular matrix in neural crest-cell migration

R Perris1

  • 1Division for Experimental Oncology 2, Reference Center for Oncology, Aviano, Italy.

Trends in Neurosciences
|January 1, 1997
PubMed
Summary

Neural crest (NC) cell migration guides peripheral nervous system development. Extracellular matrix (ECM) signals, particularly inhibitory ones, are crucial for NC cell guidance and homing, not primary integrins.

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Area of Science:

  • Developmental Biology
  • Neuroscience
  • Cell Biology

Background:

  • Peripheral nervous system development relies on neural crest (NC) cell migration.
  • Extracellular matrix (ECM) interactions are critical for regulating NC cell migration.
  • Previous studies suggested integrin receptors play a key role in NC cell-ECM interactions.

Purpose of the Study:

  • To investigate the role of ECM molecules and integrins in neural crest cell migration.
  • To elucidate the mechanisms governing NC cell guidance and final positioning.
  • To understand the balance of stimulatory and inhibitory signals in NC cell homing.

Main Methods:

  • Analysis of transplantation experiments.
  • In vitro and in vivo studies of NC cell-ECM interactions.
  • Genetic manipulations in mice to assess the roles of ECM constituents and integrins.

Main Results:

  • Genetic studies confirm the importance of certain ECM components but negate a significant role for primary integrin receptors in NC cells.
  • Evidence suggests inhibitory ECM-associated signals are key regulators of NC cell dissemination and arrest.
  • NC cell homing appears to depend on a balance of stimulatory and inhibitory ECM signals.

Conclusions:

  • The guidance and final localization of NC cells are primarily mediated by inhibitory ECM signals.
  • Integrin receptors are surprisingly not essential for this process.
  • NC cell development involves a complex interplay of ECM components and cell responses, finely tuned for precise tissue formation.

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