Author: Alexander, Marina R.; Rootes, Christina L.; van Vuren, Petrus Jansen; Stewart, Cameron R.
Title: Concentration of infectious SARS-CoV-2 by polyethylene glycol precipitation Cord-id: dfrvnsk4 Document date: 2020_9_23
ID: dfrvnsk4
Snippet: The development of medical countermeasures against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) requires robust viral assays. Here we have adapted a protocol for polyethylene glycol (PEG)-mediated precipitation of SARS-CoV-2 stocks without the need for ultracentrifugation. Virus precipitation resulted in a ∼1.5 log(10) increase in SARS-CoV-2 titres of virus prepared in VeroE6 cells and enabled the infection of several immortalized human cell lines (Caco-2 and Calu-3) at a high
Document: The development of medical countermeasures against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) requires robust viral assays. Here we have adapted a protocol for polyethylene glycol (PEG)-mediated precipitation of SARS-CoV-2 stocks without the need for ultracentrifugation. Virus precipitation resulted in a ∼1.5 log(10) increase in SARS-CoV-2 titres of virus prepared in VeroE6 cells and enabled the infection of several immortalized human cell lines (Caco-2 and Calu-3) at a high multiplicity of infection not practically achievable without virus concentration. This protocol underscores the utility of PEG-mediated precipitation for SARS-CoV-2 and provides a resource for a range of coronavirus research areas.
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