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11:08
Chemo-enzymatic Synthesis of N-glycans for Array Development and HIV Antibody Profiling
Published on: February 5, 2018
Glyconanomaterials: synthesis, characterization, and ligand presentation.
Xin Wang1, Olof Ramström, Mingdi Yan
1Department of Chemistry, Portland State University, Oregon 97207-0751, USA.
Advanced Materials (Deerfield Beach, Fla.)
|March 20, 2010
Summary
Glyconanomaterials enhance binding affinity through multivalent carbohydrate ligand presentation. Optimal ligand display and characterization are crucial for their biomedical applications.
Area of Science:
- Biomaterials Science
- Nanotechnology
- Carbohydrate Chemistry
Background:
- Glyconanomaterials, nanomaterials with surface-tethered carbohydrate ligands, show promise in biomedical fields.
- Their efficacy relies on the precise presentation of carbohydrate ligands.
- Multivalency amplifies weak ligand-binding interactions.
Purpose of the Study:
- To review coupling chemistries for glyconanomaterial synthesis.
- To highlight the importance of characterizing glyconanomaterials, focusing on ligand density and binding affinity.
- To demonstrate methods for quantifying these properties.
Main Methods:
- Overview of carbohydrate ligand coupling chemistries.
- Synthesis of glyconanoparticles using photocoupling chemistry.
- Quantification of ligand density via colorimetry.
- Assessment of binding affinity to lectins using fluorescence competition assays.
Main Results:
- Multivalent display of carbohydrate ligands significantly enhances binding affinity (several orders of magnitude) compared to free ligands.
- This enhancement is observable even at low surface ligand densities.
- Spacer linkage type and length influence binding affinity, with longer spacers improving association.
Conclusions:
- Proper display and characterization of glyconanomaterials are essential for optimizing their performance.
- Photocoupling offers a versatile method for glyconanomaterial synthesis.
- Multivalency is a key factor in achieving high binding affinities for glyconanomaterials in biomedical applications.
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