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Author Spotlight: Unveiling the Structural and Dynamic Aspects of Glycan Molecular Recognition
Published on: May 17, 2024
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Manipulating cell surface glycoproteins by targeting N-glycan-galectin interactions
Ani Grigorian1, Michael Demetriou
1Department of Neurology, University of California, Irvine, California, USA.
Methods in Enzymology
|September 7, 2010
Summary
Cell surface protein interactions are governed by N-glycans, which bind to galectins. Analyzing these N-glycan-galectin interactions reveals how cell surface organization is controlled, impacting cell growth and autoimmunity.
Area of Science:
- Cell Biology
- Glycobiology
- Immunology
Background:
- Cell surface receptor and transporter function relies on their concentration and distribution.
- Most cell surface proteins are modified with N-linked oligosaccharides (N-glycans).
- N-glycans influence glycoprotein concentration via interactions with lectins like galectins.
Purpose of the Study:
- To describe methods for analyzing N-glycan-galectin interactions.
- To understand how these interactions control cell surface receptor and transporter distribution and organization.
Main Methods:
- Analysis of N-glycan structures and their interactions with galectins.
- Investigating the role of N-glycosylation in cell surface protein organization.
- Studying metabolic and genetic factors influencing N-glycosylation.
Main Results:
- N-glycan number and structure regulate cell surface glycoprotein concentration through galectin binding.
- N-glycan biosynthesis is co-dependently regulated by ER/Golgi enzyme activity and hexosamine pathway metabolites.
- Dysregulation of N-glycosylation is implicated in T-cell-mediated autoimmunity in mice and humans.
Conclusions:
- N-glycan-galectin interactions are critical for controlling cell surface protein distribution and organization.
- Adaptive control of cell growth and differentiation is linked to N-glycan biosynthesis regulation.
- Understanding N-glycosylation is vital for addressing autoimmune diseases.
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