Influenza virus (IFV) detection in the early phase of disease is critical for effective anti-influenza therapy using neuraminidase inhibitors. Sialyloligosaccharide receptors on the surface of respiratory cells are recognized by IFV hemagglutinin (HA) in the infection. Here, we show that agglutination of IFV is detected using poly(glycidyl methacrylate) (PGMA)-coated polystyrene nanoparticles conjugated with a sialic acid-mimic peptide. The azido peptide was immobilized onto the surface of the PGMA-coated nanoparticles by click chemistry. The distribution of particle size, determined by dynamic light scattering, indicated that the peptide-conjugated nanoparticles were agglutinated in the presence of HA and IFV. Nanoparticles conjugated with the receptor-mimic peptide may be a useful alternative to red blood cells in the global surveillance and clinical diagnosis of influenza.
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This work was supported in part by AMED under Grant Number JP19hm0102056.
Conflict of interest
The authors declare that they have no conflict of interest.
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