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Cell lineage and cell migration in the neural crest
1Developmental Biology Center, University of California, Irvine 92717.
Annals of the New York Academy of Sciences
|January 1, 1991
Summary
Neural crest cells are crucial for development, forming diverse cell types. Extracellular matrix molecules like fibronectin and laminin support their migration, but no single molecule fully regulates this complex process.
Area of Science:
- Developmental Biology
- Cell Biology
- Neuroscience
Background:
- The neural crest is a transient embryonic structure.
- Neural crest cells extensively migrate and differentiate into various cell types.
- Both intrinsic and extrinsic factors influence neural crest cell fate.
Purpose of the Study:
- To investigate the role of extracellular matrix (ECM) molecules in neural crest cell migration.
- To understand the factors determining neural crest cell differentiation.
- To explore the complex regulation of neural crest cell migration patterns.
Main Methods:
- Cell lineage tracing using vital dye injection in premigratory trunk neural crest cells.
- In vitro and in vivo studies assessing the effects of ECM molecules on neural crest cell migration.
- Analysis of different neural crest cell populations based on axial level of origin.
Main Results:
- Single premigratory trunk neural crest cells can differentiate into multiple cell types.
- Large glycoproteins (fibronectin, laminin) generally support neural crest cell migration.
- Proteoglycans appear to modulate neural crest cell migration on other ECM molecules.
Conclusions:
- Neural crest cell migration is a complex process influenced by multiple ECM molecules.
- No single ECM molecule has been identified as the sole regulator of neural crest cell migration.
- Understanding these migratory cues is essential for comprehending neural crest development.