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Updated: Jun 1, 2026
07:12
Microarray Polymer Profiling (MAPP) for High-Throughput Glycan Analysis
Published on: September 29, 2023
Elucidating glycosaminoglycan-protein-protein interactions using carbohydrate microarray and computational approaches
Claude J Rogers1, Peter M Clark, Sarah E Tully
1Division of Chemistry and Chemical Engineering, California Institute of Technology and Howard Hughes Medical Institute, 1200 East California Boulevard, Pasadena, CA 91125, USA.
Summary
This study introduces a novel method combining carbohydrate microarrays and computational modeling to map glycosaminoglycan-protein interactions. It reveals chondroitin sulfate
Area of Science:
- Biochemistry
- Molecular Biology
- Glycobiology
Background:
- Glycosaminoglycans (GAGs) are crucial in cellular processes like viral invasion and angiogenesis.
- GAGs regulate numerous proteins, but methods for studying GAG-protein interactions and complex assembly are limited.
Purpose of the Study:
- To develop and validate a multidisciplinary approach for identifying GAG-protein interactions.
- To investigate the role of GAGs in assembling multimeric protein complexes.
- To explore previously undescribed GAG-protein interactions, particularly involving chondroitin sulfate (CS).
Main Methods:
- Development of new carbohydrate microarray technology.
- Application of computational modeling for interaction analysis.
- Validation using known GAG-protein interactions (e.g., FGF2, VAR2CSA, TNF-α).
Main Results:
- The approach successfully identified known GAG-protein interactions.
- New interactions between chondroitin sulfate CS-E and neurotrophins were discovered.
- Demonstrated that CS can assemble multimeric signaling complexes and modulate neurotrophin pathways.
- Identified a CS-E binding site suggesting a mechanism for neurotrophin-receptor complex formation.
Conclusions:
- The combined microarray and computational modeling approach provides a versatile tool for GAG-protein interaction discovery.
- This method offers molecular-level insights into GAG-mediated protein complex formation and signaling.
- Highlights the role of CS-E in neurotrophin signaling and complex assembly.
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