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Glycosaminoglycans in early chick embryo
Spyros S Skandalis1, Achilleas D Theocharis, Nikoletta Papageorgakopoulou
1Organic Chemistry, Biochemistry and Natural Products Division, Department of Chemistry, University of Patras, Greece.
The International Journal of Developmental Biology
|May 21, 2003
Summary
Glycosaminoglycans (GAGs) profiles changed significantly during early chick development. Dermatan sulfate and chondroitin sulfate were predominant, with specific sulfation patterns emerging as development progressed.
Area of Science:
- Developmental Biology
- Biochemistry
Background:
- Glycosaminoglycans (GAGs) are crucial for embryonic development.
- Understanding GAGs' dynamic changes is key to deciphering early developmental processes.
Purpose of the Study:
- To analyze the developmental profile of GAGs in early chick embryos.
- To investigate stage-specific changes in GAG abundance and sulfation patterns.
Main Methods:
- Cellulose acetate electrophoresis and high-performance liquid chromatography were employed.
- Analysis covered developmental stages from late blastula (stage XIII+) to early somite (stage HH7-9).
Main Results:
- Sulphated GAGs were abundant and showed stage-related variations.
- Dermatan sulfate and chondroitin sulfate dominated, with shifting ratios during development.
- Significant increases in 4- and 6-sulfation of chondroitin sulfate were observed, indicating active sulfotransferases.
Conclusions:
- GAG composition and sulfation are tightly regulated during early chick embryogenesis.
- These changes likely support critical developmental events like gastrulation and tissue interactions.
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