A metal nanoparticle composite, namely TPNT1, which contains Au-NP (1 ppm), Ag-NP (5 ppm), ZnO-NP (60 ppm) and ClO 2 (42.5 ppm) in aqueous solution was prepared and characterized by spectroscopy, transmission electron microscopy, dynamic light scattering analysis and potentiometric titration. Based on the in vitro cell-based assay, TPNT1 inhibited six major clades of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) with effective concentration within the range to be used as food additives. TPNT1 was shown to block viral entry by inhibiting the binding of SARS-CoV-2 spike proteins to the angiotensin-converting enzyme 2 (ACE2) receptor and to interfere with the syncytium formation. In addition, TPNT1 also effectively reduced the cytopathic effects induced by human (H1N1) and avian (H5N1) influenza viruses, including the wild-type and oseltamivir-resistant virus isolates. Together with previously demonstrated efficacy as antimicrobials, TPNT1 can block viral entry and inhibit or prevent viral infection to provide prophylactic effects against both SARS-CoV-2 and opportunistic infections.
【저자키워드】 Nanoparticles, Antiviral agents, 【초록키워드】 SARS-CoV-2, viral infection, Efficacy, ACE2, coronavirus, in vitro, Prophylactic, virus, angiotensin-converting enzyme 2, SARS-CoV-2 spike protein, clade, influenza viruses, Antimicrobials, H1N1, receptor, transmission electron microscopy, binding, opportunistic Infections, Cytopathic effect, Concentration, Analysis, isolates, acute respiratory syndrome, wild-type, H5N1, syncytium formation, block viral entry, Effect, Prevent, effective, shown, addition, inhibit, inhibited, reduced, characterized, demonstrated, interfere, inhibiting, scattering, 【제목키워드】 SARS-CoV-2, Influenza virus, nanoparticle, effective,