Distinct Roles of GSK3α and GSK3β in Zebrafish Heart Development
Author Information
Author(s): Lee Huang-Chieh, Tsai Jen-Ning, Liao Pei-Yin, Tsai Wei-Yuan, Lin Kai-Yen, Chuang Chung-Cheng, Sun Chi-Kuang, Chang Wen-Chang, Tsai Huai-Jen
Primary Institution: National Taiwan University
Hypothesis
This study aims to uncover the isoform-specific roles of GSK3α and GSK3β during cardiogenesis in zebrafish.
Conclusion
GSK3α is essential for cardiomyocyte survival, while GSK3β is crucial for heart positioning and valve development.
Supporting Evidence
- GSK3α morphants showed reduced cardiomyocyte numbers due to apoptosis.
- GSK3β morphants displayed normal cardiomyocyte development but had disrupted heart positioning.
- Both GSK3 isoforms were necessary for heart development but were not functionally redundant.
- Heart defects in gsk3α morphants were more severe than in gsk3β morphants.
- GSK3β is involved in the regulation of left-right asymmetry in heart development.
Takeaway
This study shows that two similar proteins, GSK3α and GSK3β, help zebrafish hearts grow, but they do different jobs: one keeps heart cells alive, and the other helps the heart find its right place.
Methodology
Morpholino antisense oligonucleotides were injected to block gsk3α and gsk3β translations in zebrafish embryos, followed by observation of heart development.
Limitations
The study primarily focuses on zebrafish, which may not fully represent the roles of GSK3 isoforms in other species.
Participant Demographics
Zebrafish embryos were used in the study.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website