id author title date pages extension mime words sentences flesch summary cache txt cord-290904-ngvhk0qy Zheng, Zhiqiang Monoclonal antibodies for the S2 subunit of spike of SARS-CoV-1 cross-react with the newly-emerged SARS-CoV-2 2020-07-16 .txt text/plain 4471 246 57 In this study, we aim to verify if the sequence of the immunogen used to generate mAb 1A9, as well as three other mAbs, is conserved in different coronaviruses and if these mAbs bind to the S protein of SARS-CoV-2 expressed in mammalian cell lines. IF analysis performed on transiently transfected COS-7 cells showed binding of the four mAbs to this S protein fragment of SARS-CoV-2 ( Figure 2B ). Utility of monoclonal antibody 1A9 for detection of S protein in a sandwich ELISA format and in SARS-CoV-2 infected cells Based on indirect ELISA data, mAb 1A9 has the strongest binding to S protein when compared with the other three mAbs. Hence, a sandwich ELISA was performed to determine if it can be paired with the human mAb CR3022 which is known to bind to the S1 subunit of SARS-CoV-2. ./cache/cord-290904-ngvhk0qy.txt ./txt/cord-290904-ngvhk0qy.txt