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Related Experiment Videos

Cell lineage analysis in neural crest ontogeny

N M Le Douarin1, E Dupin

  • 1Institute of Cellular and Molecular Embryology, CNRS, Nogent-sur-Marne, France.

Journal of Neurobiology
|February 1, 1993
PubMed
Summary

Neural crest cells in avian embryos are pluripotent and migrate extensively. Their fate is influenced by the environment, with some cells differentiating early while others remain totipotent, progressively restricting potential during migration.

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Area of Science:

  • Developmental biology
  • Embryology
  • Cell biology

Background:

  • The neural crest is a transient, pluripotent embryonic structure in vertebrates.
  • Neural crest cells exhibit regulated migratory properties crucial for development.

Purpose of the Study:

  • To review in vivo and in vitro studies on avian neural crest ontogeny.
  • To elucidate the migratory pathways and fate determination of neural crest cells.

Main Methods:

  • In vivo fate mapping along the neuraxis.
  • Quail-chick marker system for tracing migration pathways.
  • Monoclonal antibody (HNK1/NC1) for cell tracking.
  • Clonal cultures of isolated neural crest cells.

Main Results:

  • Established neural crest fate map prior to migration.
  • Demonstrated the environment's critical role in determining cell fate.
  • Identified pluripotent, committed, and rare totipotent neural crest progenitors.
  • Observed progressive restriction of cell potential during migration.

Conclusions:

  • Propose a model of stochastic potential restriction in migrating neural crest cells.
  • Environmental cues and selective forces at gangliogenesis sites dictate cell differentiation.
  • Neural crest cell differentiation is a dynamic process influenced by intrinsic and extrinsic factors.

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