Wnt/Axin1/β-Catenin Signaling and Brain Asymmetries in Zebrafish
Author Information
Author(s): Carl Matthias, Bianco Isaac H., Bajoghli Baubak, Aghaallaei Narges, Czerny Thomas, Wilson Stephen W.
Primary Institution: Department of Anatomy and Developmental Biology, UCL, London, UK
Hypothesis
The Wnt/Axin1/β-catenin signaling pathway regulates asymmetric Nodal pathway gene expression and the development of brain asymmetries.
Conclusion
The study demonstrates that Wnt/Axin1/β-catenin signaling plays critical roles in establishing and elaborating asymmetries in the developing central nervous system.
Supporting Evidence
- Overactivation of Wnt signaling leads to bilateral expression of Nodal pathway genes in the epithalamus.
- Axin1 is required for the elaboration of neuroanatomical asymmetries.
- Disruption of Wnt signaling during mid-somitogenesis affects Nodal pathway gene expression in both the LPM and brain.
- Enhanced Wnt signaling can activate Nodal pathway genes independently of Spw activity.
Takeaway
This study shows that certain signals in fish help decide which side of the brain is different from the other, and if those signals are messed up, the brain can end up looking the same on both sides.
Methodology
The study used various experimental approaches including genetic manipulation and treatment with lithium chloride to assess the roles of Wnt signaling in zebrafish development.
Limitations
The study primarily focuses on zebrafish, which may limit the generalizability of the findings to other species.
Participant Demographics
Zebrafish embryos were used in the study.
Statistical Information
P-Value
p<0.001
Statistical Significance
p<0.001
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website