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Glycosaminoglycans

Glycosaminoglycans

Glycosaminoglycans (GAGs), also known as mucopolysaccharides, are long and linear polymers comprising of specific repeating disaccharides - the amino sugar that can be N-acetylglucosamine or N-acetylgalactosamine, and a uronic acid that is usually glucuronic acid or iduronic acid.
GAGS are found in the extracellular matrix of vertebrates, invertebrates, and bacteria. Due to their polar nature they attract water, and serve as excellent lubricants or shock absorbers in an animal body.
Hyaluronic...

Hydrolysis

Hydrolysis

Overview
Hydrolysis is a chemical reaction in which the addition of water breaks down a polymer into its simpler monomer units. For example, peptides break into amino acids, carbohydrates into simple sugars, and DNA into nucleotides. Enzymes often facilitate these processes.
Hydrolysis Reverses Dehydration Synthesis
Complex carbohydrates can be broken down by breaking the bonds between individual sugar units. The reaction breaks a glycosidic bond as water is added to the compound. The...

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Detection of Glycosaminoglycans by Polyacrylamide Gel Electrophoresis and Silver Staining

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Published on: February 25, 2021

Solvolytic depolymerization of chondroitin and dermatan sulfates.

Toshihiko Toida¹, Kenji Sato, Noriko Sakamoto

¹Graduate School of Pharmaceutical Sciences, Chiba University, 263-8522 Chiba, Japan. toida@p.chiba-u.ac.jp

Carbohydrate Research

|March 11, 2009

Summary

A novel solvolytic degradation method simplifies the purification of chondroitin and dermatan sulfate oligosaccharides. This technique enables easier characterization of glycosaminoglycan structure-activity relationships (SARs).

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Area of Science:

Biochemistry
Carbohydrate Chemistry
Glycoscience

Background:

Glycosaminoglycans (GAGs) like chondroitin and dermatan sulfates are crucial for biological functions.
Investigating GAG oligosaccharide structure-activity relationships (SARs) requires pure, well-characterized samples.
Current methods for obtaining GAG oligosaccharides involve complex purification due to diverse sulfonation patterns.

Purpose of the Study:

To develop an efficient method for obtaining purified chondroitin and dermatan sulfate oligosaccharides.
To facilitate the investigation of GAG biological functions and SARs.
To establish a reliable library of GAG oligosaccharides for further research.

Main Methods:

A novel solvolytic degradation technique was employed for chondroitin and dermatan sulfates.
The method yields an oligosaccharide mixture amenable to simplified purification.
Characterization of the resulting oligosaccharides was performed using (1)H NMR and MALDI-TOFMS.

Main Results:

The solvolytic degradation method effectively produced an oligosaccharide mixture.
Purification of chondro/dermato oligosaccharides was significantly simplified.
The obtained oligosaccharides featured specific terminal residues and desulfonated internal units, preserving core structures.

Conclusions:

The developed solvolytic degradation method offers an accessible route to purified GAG oligosaccharides.
This advancement simplifies the characterization of GAGs and aids in SAR studies.
The method provides a foundation for building a comprehensive library of GAG oligosaccharides.