(A) Interaction of Baculovirus pseudotyped with a SARS-CoV-2 delta
variant (B.1.617.2) spike protein and ACE2 on HEK-293T cells, measured
using fluorescence imaging. (B) Inhibition efficiency of Baculovirus
pseudotyped with the delta variant spike protein in infected HEK293T
cells in the presence of buffer (Mock), GQDs (30 μg/mL), HNP1
(4 μg/mL)-attached GQDs (30 μg/mL), LL-37 (4 μg/mL)-attached
GQDs (30 μg/mL), and LL-37 (4 μg/mL) and HNP1 (4 μg/mL)-attached
GQDs (30 μg/mL). (C) SEM image of Baculovirus pseudotyped with
a SARS-CoV-2 delta variant (B.1.617.2) spike protein when they are
treated with peptide-attached GQDs for 6 h. (D) TEM image of Baculovirus
pseudotyped with a SARS-CoV-2 delta variant (B.1.617.2) spike protein
when they are treated with peptide-attached GQDs for 12 h.