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Updated: Aug 2, 2026
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Tracking Morphogenetic Tissue Deformations in the Early Chick Embryo
Published on: October 17, 2011
Teashirt 3 expression in the chick embryo reveals a remarkable association with tendon development
Isabelle Manfroid1, Xavier Caubit, Christophe Marcelle
1Institut de Biologie du Développement de Marseille-Luminy, UMR CNRS 6216, Centre National de la Recherche Scientifique-Université de la Méditerranée, Campus de Luminy, F-13288 Marseille cedex 09, France.
Gene Expression Patterns : GEP
|April 25, 2006
Summary
The chick TSHZ3 gene is crucial for embryonic development, particularly in forming tendons. Its expression in somites is regulated by FGF8, highlighting conserved functions of teashirt genes across species.
Area of Science:
- Developmental biology
- Genetics
- Evolutionary biology
Background:
- The teashirt (tsh) gene in Drosophila is vital for trunk patterning and interacts with Wingless and Hedgehog pathways.
- Three Tshz genes exist in mammals and birds, with mouse Tshz1 and Tshz2 expression patterns documented during embryogenesis.
- Previous research demonstrated that mouse Tshz genes can rescue Drosophila tsh loss-of-function, indicating conserved functions.
Purpose of the Study:
- To investigate the expression pattern of chick TSHZ3 during embryonic development.
- To understand the role of chick TSHZ3 in specific embryonic tissues and developmental processes.
- To elucidate the regulatory mechanisms controlling TSHZ3 expression in avian embryos.
Main Methods:
- Whole-mount in situ hybridization was used to analyze chick TSHZ3 expression patterns.
- Chick embryos at various developmental stages were examined.
- Experimental manipulation involving FGF8 was performed to assess its effect on TSHZ3 expression.
Main Results:
- Chick TSHZ3 exhibits dynamic expression in mesodermal derivatives, central nervous system, and peripheral nervous system.
- Specific emphasis was placed on the dynamic expression in somites and limb regions where tendons develop.
- TSHZ3 activation in somites was shown to be induced by FGF8, a known inducer of the tendon marker SCX.
Conclusions:
- Chick TSHZ3 plays a significant role in avian embryogenesis, particularly in tendon development.
- The findings support the conserved function of teashirt genes across different species.
- FGF8 signaling is identified as a key regulator of TSHZ3 expression in the developing somites, linking it to tendon formation.
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