Lectin arrays are advanced analytical tools composed of multiple immobilized lectins—carbohydrate-binding proteins with specific affinities for distinct glycan structures. These arrays enable rapid, high-throughput profiling of glycosylation patterns on proteins, cells, or other biological samples by detecting specific sugar moieties.

Applications

They are widely used for:

• Glycosylation Analysis: Determining glycan structures and variations in glycoproteins, which is critical for understanding protein function and disease states.
• Biomarker Discovery: Identifying glycan-based biomarkers in complex biological samples, aiding diagnostics and therapeutic monitoring.
• Drug Development: Screening glycan-lectin interactions to design targeted therapeutics and delivery systems.
• Pathogen-Host Interaction Studies: Investigating how microbes interact with host cells via glycan recognition.

Lectin arrays offer advantages such as minimal sample preparation, preservation of native glycoprotein conformation, and the ability to analyze crude samples without glycan release. However, they provide qualitative or semi-quantitative data and do not fully resolve glycan structures like mass spectrometry.

Recent developments include human lectin arrays used to screen sugar-based ligands for targeted delivery of therapeutics and to characterize glycan-mediated interactions in immune responses. These platforms facilitate rapid in vitro screening to identify candidate ligands and understand cell-specific targeting mechanisms.