SUI-YUAN CHANGHuang, Kuo-YenKuo-YenHuangTAI-LING CHAOKao, Han-ChiehHan-ChiehKaoPang, Yu-HaoYu-HaoPangLu, LinLinLuChiu, Chun-LunChun-LunChiuHuang, Hsin-ChangHsin-ChangHuangCheng, Ting-Jen RachelTing-Jen RachelChengJIM-MIN FANGPAN-CHYR YANG2021-11-072021-11-0720212045-2322https://scholars.lib.ntu.edu.tw/handle/123456789/586528A metal nanoparticle composite, namely TPNT1, which contains Au-NP (1 ppm), Ag-NP (5 ppm), ZnO-NP (60 ppm) and ClO2 (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.en[SDGs]SDG3journal article10.1038/s41598-021-87254-3338887382-s2.0-85104769646https://scholars.lib.ntu.edu.tw/handle/123456789/561687