The SARS-COV-2 Spike Protein Binds Sialic Acids and Enables Rapid Detection in a Lateral Flow Point of Care Diagnostic Device
Alexander N. Baker, Sarah‐Jane Richards, Collette S. Guy, Thomas R. Congdon, Muhammad Hasan, Alexander J. Zwetsloot, Angelo Gallo, Józef R. Lewandowski, Phillip J. Stansfeld, Anne Straube, Marc Walker, Simona Chessa, Giulia Pergolizzi, Simone Dedola, Robert A. Field, Matthew I. Gibson
Abstract
-acetyl neuraminic acid has affinity toward the SARS-COV-2 spike glycoprotein, demonstrating its glycan-binding function. Optimization of the particle size and coating enabled detection of the spike glycoprotein in lateral flow and showed selectivity over the SARS-COV-1 spike protein. Using a virus-like particle and a pseudotyped lentivirus model, paper-based lateral flow detection was demonstrated in under 30 min, showing the potential of this system as a low-cost detection platform.