Related Experiment Video
Updated: Jul 1, 2026
Blastomere Explants to Test for Cell Fate Commitment During Embryonic Development
Published on: January 26, 2013
Teasing out T-box targets in early mesoderm
Fiona C Wardle1, Virginia E Papaioannou
1Department of Physiology, Development and Neuroscience, Downing Street, Cambridge CB2 3DY, UK. fcw27@cam.ac.uk
Abstract:
T-box transcription factor genes are widely conserved in metazoan development and widely involved in developmental processes. With the phase of T-box gene discovery winding down, the phase of transcriptional target discovery for T-box transcription factors is finally taking off and yielding rich rewards. Mutant phenotypes in mouse and zebrafish as well as morpholino studies in zebrafish have helped to link the T-box genes to a variety of signaling pathways through diverse target genes and feedback loops. Particularly in early mesoderm development, it is emerging that a network of T-box genes interacts with Wnt/beta-catenin and Notch/Delta signaling pathways, among others, to control the important processes of mesoderm specification, somite segmentation, and left/right body axis determination.
Insights
T-box transcription factors are key regulators in animal development. Recent research reveals their complex interactions with signaling pathways, controlling crucial processes like mesoderm development and body axis formation.
Area of Science:
- Developmental Biology
- Genetics
- Molecular Biology
Background:
- T-box transcription factors are ancient gene families crucial for metazoan development.
- The discovery phase for T-box genes is concluding, shifting focus to their regulatory roles.
- Understanding T-box gene networks is vital for deciphering developmental mechanisms.
Purpose of the Study:
- To explore the transcriptional targets of T-box transcription factors.
- To elucidate the role of T-box genes in developmental signaling pathways.
- To understand the network interactions governing early mesoderm development.
Main Methods:
- Analysis of mutant phenotypes in mouse and zebrafish models.
- Utilizing morpholino studies in zebrafish to investigate gene function.
- Investigating interactions between T-box genes and signaling pathways like Wnt/beta-catenin and Notch/Delta.
Main Results:
- T-box genes are linked to diverse signaling pathways through their target genes.
- A network of T-box genes interacts with Wnt/beta-catenin and Notch/Delta pathways.
- These interactions are critical for mesoderm specification, somite segmentation, and left/right axis determination.
Conclusions:
- T-box transcription factors play a central role in orchestrating early developmental processes.
- The interplay between T-box genes and signaling pathways forms a complex regulatory network.
- Further research into T-box targets will yield significant insights into developmental biology.
