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Development of the nervus terminalis: origin and migration
1Department of Molecular Biology and Genetics, 445 Biotechnology Building, Cornell University, Ithaca, NY 14850, USA. kew12@cornell.edu
Microscopy Research and Technique
|December 1, 2004
Summary
The origin of the nervus terminalis, a cranial nerve, is clarified. Recent studies in zebrafish show that cranial neural crest cells contribute to its development, resolving a long-standing question in vertebrate neurodevelopment.
Area of Science:
- Developmental Biology
- Neuroscience
- Genetics
Background:
- The origin of the nervus terminalis, a cranial nerve, remains poorly understood in vertebrate development.
- It forms at a complex interface involving cranial neural crest cells, neural tube, and placodes.
Purpose of the Study:
- To elucidate the cellular origins of the nervus terminalis.
- To review recent advances in understanding its developmental sources.
Main Methods:
- Utilizing the zebrafish embryo as a model system.
- Employing lineage tracing, gene expression visualization, and genetic cell ablation techniques.
Main Results:
- Evidence suggests that cranial neural crest cells contribute to the origin of at least a subset of nervus terminalis cells.
- Zebrafish models have provided new insights into this century-old developmental problem.
Conclusions:
- Cranial neural crest is identified as a source for some nervus terminalis cells.
- Recent technical advancements have significantly improved our understanding of nervus terminalis development.