| Literature DB >> 34140522 |
Simon G P Funnell1,2,3, Babak Afrough1, John James Baczenas4, Neil Berry5, Kevin R Bewley1, Rebecca Bradford6, Clint Florence7, Yann Le Duff5, Mark Lewis7, Ryan V Moriarty4, Shelby L O Connor4, Karen L Osman1, Steven Pullan1, Sujatha Rashid6, Kevin S Richards1,8, Kimberly J Stemple7, Ivana Knezevic9.
Abstract
An array of SARS-CoV-2 virus variants have been isolated, propagated and used in in vitro assays, in vivo animal studies and human clinical trials. Observations of working stocks of SARS-CoV-2 suggest that sequential propagation in Vero cells leads to critical changes in the region of the furin cleavage site, which significantly reduce the value of the working stock for critical research studies. Serially propagating SARS-CoV-2 in Vero E6 cells leads to rapid increases in genetic variants while propagation in other cell lines (e.g. Vero/hSLAM) appears to mitigate this risk thereby improving the overall genetic stability of working stocks. From these observations, investigators are urged to monitor genetic variants carefully when propagating SARS-CoV-2 in Vero cells.Entities:
Year: 2021 PMID: 34140522 PMCID: PMC8211640 DOI: 10.1038/s41541-021-00346-z
Source DB: PubMed Journal: NPJ Vaccines ISSN: 2059-0105 Impact factor: 7.344