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Common precursors for neural and mesectodermal derivatives in the cephalic neural crest
A Baroffio1, E Dupin, N M Le Douarin
1Institut d'Embryologie cellulaire et moléculaire, CNRS, Nogent-sur-Marne, France.
Development (Cambridge, England)
|May 1, 1991
Summary
Neural crest (NC) cells in vertebrate embryos can develop into various cell types. Some NC cells are highly multipotent stem cells, capable of forming neurons, glia, cartilage, and pigment cells.
Area of Science:
- Developmental Biology
- Stem Cell Research
- Neuroscience
Background:
- Vertebrate cephalic neural crest (NC) cells differentiate into diverse lineages, including neuronal, glial, melanocytic, and mesectodermal cells.
- Understanding the multipotency and differentiation potential of NC cells is crucial for developmental biology.
Purpose of the Study:
- To investigate the multipotency of migrating cephalic neural crest cells.
- To identify potential stem cell populations within the cephalic NC.
- To explore the developmental fate choices of individual NC precursors.
Main Methods:
- Clonal cultures of quail migrating cephalic neural crest (NC) cells were utilized.
- Analysis of cell types generated from individual NC progenitors under identical culture conditions.
Main Results:
- Evidence suggests that neurons and glial cells can originate from the same progenitors as cartilage (a mesectodermal derivative).
- A subpopulation of highly multipotent NC precursors, resembling stem cells, can generate neurons, glia, cartilage, and pigment cells.
- Other NC cells exhibited restricted potential, forming clones of only one or a few cell types.
Conclusions:
- Migrating cephalic NC contains multipotent stem cells with broad differentiation potential.
- Progressive commitment to specific developmental fates occurs as NC cells proliferate and migrate.
- This suggests a model where NC cell proliferation generates subpopulations with increasingly restricted developmental trajectories.