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Heterogeneity among early quail neural crest cells
Brain Research
|June 1, 1984
Summary
Quail neural crest cells are a diverse group. Different cell types, like melanocytes and neurons, arise from distinct progenitor subpopulations, not a single pluripotent type.
Area of Science:
- Developmental Biology
- Cell Biology
- Neuroscience
Background:
- Early migratory quail neural crest cells differentiate into various cell types, including melanocytes and adrenergic neurons.
- The heterogeneity of these progenitor cells and their differentiation potential has been a subject of ongoing research.
Purpose of the Study:
- To investigate whether distinct clonal progeny types arise from separate progenitor subpopulations or a single pluripotent population.
- To differentiate between the two models of neural crest cell differentiation.
Main Methods:
- In vitro analysis of early migratory quail neural crest cells from the trunk region.
- Utilized merocyanine 540 fluorescent dye to probe plasma membranes in sparse secondary cultures.
- Assessed differential sensitivity to merocyanine 540-mediated photosensitization among progenitor cells.
Main Results:
- Identified three types of clonal progeny: melanocyte-only, mixed melanocyte-neuron, and neuron-only.
- Progenitors of melanocytes showed lower sensitivity to photosensitization compared to adrenergic neuron or mixed progeny progenitors.
- Minor differences were observed between adrenergic neuron and mixed progeny progenitor responses.
Conclusions:
- Early migratory quail neural crest cells represent a heterogeneous population.
- The diverse clonal progeny are derived from distinct subpopulations of progenitor cells.
- This heterogeneity dictates the differentiation pathways of neural crest cells.