Related Experiment Video
Updated: May 20, 2026
09:16
Analyzing Craniofacial Morphogenesis in Zebrafish Using 4D Confocal Microscopy
Published on: January 30, 2014
fras1 shapes endodermal pouch 1 and stabilizes zebrafish pharyngeal skeletal development
Jared Coffin Talbot1, Macie B Walker, Thomas J Carney
1Institute of Neuroscience, University of Oregon, Eugene, OR 97403-1254, USA.
Development (Cambridge, England)
|July 12, 2012
Summary
Frasier syndrome (FRAS1) gene mutations disrupt zebrafish facial development by impairing pharyngeal pouch 1 formation, leading to skeletal defects. This study reveals FRAS1
Area of Science:
- Developmental biology
- Genetics
- Craniofacial development
Background:
- Fraser syndrome, caused by mutations in the FRAS1 gene, presents with variable facial deformities and hearing loss.
- The developmental origins of facial defects in Fraser syndrome remain unclear.
Purpose of the Study:
- To investigate the role of the FRAS1 gene in zebrafish facial development.
- To elucidate the developmental basis of facial defects associated with FRAS1 mutations.
Main Methods:
- Zebrafish (Danio rerio) fras1 mutant generation and phenotypic analysis.
- Transplantation experiments to determine the site of FRAS1 gene action.
- Analysis of pharyngeal pouch 1 and facial skeletal development.
Main Results:
- Zebrafish fras1 mutants display defects in facial epithelia and skeleton, including failure in late-p1 formation.
- FRAS1 acts in the endoderm to regulate both skeletal and endodermal morphology.
- Skeletal defects in fras1 mutants are temporally linked to late-p1 morphogenesis and exhibit fluctuating asymmetry.
Conclusions:
- FRAS1 is crucial for proper pharyngeal pouch 1 formation, which in turn stabilizes facial skeletal development in zebrafish.
- FRAS1-mediated developmental instability may explain the phenotypic variability observed in human Fraser syndrome patients.
