Serial dilutions of Anti-SARS-CoV-2 Neutralizing Antibody was detected by SARS-CoV-2 (2019-nCoV) Inhibitor Screening ELISA Kit. The IC50> (WT) is typically 0.5-5 nM. | |
The neutralization activity is measured by microneutralization assay in vitro. The virus microneutralizaiton (MN) test was performed on 293T-ACE2 cells infected with SARS-CoV-2 Spike Pseudovirus, or SARS-CoV-2 Spike Omicron (B.1.1.529) Pseudovirus, or SARS-CoV-2 Delta (B.1.617.2) variant Spike Pseudovirus, under treatment of serial dilutions of neutralizing antibody. The infection was neutralized by increasing concentrations of Anti-SARS-CoV-2 Neutralizing Antibody. Rate of inhibition was determined by comparing the Relative Light Unit (RLU) of Luciferase reporter in different antibody concentrations. IC50(WT)is 0.29 µg/mL. IC50(Delta) is 0.15 µg/mL. No neutralization activity to SARS-CoV-2 Spike Omicron (B.1.1.529) Pseudovirus | |
Flow cytometric analysis of SARS-COV-2 Spike overexpressed HEK293 Cells were stained with purified anti-SARS-COV-2 Spike Neutralizing Rabbit MAb, then a FITC-conjugated second step antibody. The fluorescence histograms were derived from gated events with the forward and side light-scatter characteristics of intact cells.\ (Validation Experiment) |