SARS-CoV-2 infection activates the live-cell
reporter. (A) Schematic
of SARS-CoV-2 cell infection activating the reporter signal. Representative
immunofluorescence staining for SARS-CoV-2 spike and GLuc in infected
cells 24 hpi. Scale bar—20 μm. (B) Reporter cells were
infected with SARS-CoV-2 using different MOI, and 24 hpi cells were
immunostained for SARS-CoV-2 spike and GLuc. (C) The staining intensity
of GLuc was compared between SARS-CoV-2 positive and negative cells
in four random fields. Data was plotted as mean ± SD. Analysis
was performed using a two-tailed Student’s t-test, N = 4, ** = p ≤ 0.01.
(D) Relative GLuc expression levels in SARS-CoV-2 infected cells normalized
to 18s ribosomal RNA (18s rRNA), 24 hpi. Data was plotted as mean
± SD. Statistical analysis was performed using a two-tailed Student’s t-test, N = 3, *** = p ≤ 0.005.