Glycosaminoglycanomics: where we are.

Area of Science:

• Biochemistry
• Molecular Biology
• Glycobiology

Background:

• Glycosaminoglycans (GAGs) are vital polysaccharides involved in numerous physiological and pathological processes, including development, angiogenesis, immunity, cancer, and neurodegeneration.
• Cell surface GAGs mediate crucial interactions, cell adhesion, signaling, and host-pathogen interactions, while also contributing to extracellular matrix assembly.
• Heparan sulfate chains within the ECM sequester growth factors, highlighting the regulatory role of GAGs in biological activities through protein interactions.

Purpose of the Study:

• To provide an overview of experimental approaches in glycosaminoglycomics.
• To summarize major characterized GAG-protein interactomes.
• To present available computational tools and databases for analyzing GAG structures and interactions.

Main Methods:

• Review of experimental techniques for GAG profiling in various biological contexts.
• Analysis of existing literature on characterized GAG-protein interactomes.
• Survey of computational tools and databases for GAG structure and interaction data management.

Main Results:

• The structural heterogeneity of GAGs poses significant challenges for analytical and computational approaches.
• Several experimental methods are employed in glycosaminoglycomics for GAG profiling.
• Major GAG-protein interactomes have been identified, and relevant computational resources are available.

Conclusions:

• Understanding GAG structure and interactions is critical for deciphering their roles in health and disease.
• Advancements in glycosaminoglycomics and computational tools are essential for overcoming analytical challenges.
• This review consolidates current knowledge and resources for GAG research.