Fig. 4. Inhibition of S-20-1 against infection of divergent HCoVs and SARSr-CoV.
Inhibitory activity of S-20-1 on cell–cell fusion mediated by the S protein of SARS-CoV-2 (a) SARS-CoV (b) MERS-CoV (c) HCoV-229E (d) and HCoV-NL63 (e) Inhibitory activity of S-20-1 against infection of pseudotyped SARS-CoV (f) MERS-CoV (g), HCoV-229E (h), HCoV-NL63 (i) and SARr-CoV W1V1 (j). Inhibitory activity of S-20-1 against infection of authentic HCoV-OC43 (k) and HCoV-229E (l). RD cells and Huh-7 cells were infected with HCoV-OC43 (k) and HCoV-229E (l), respectively.