Effect of Short Time of SARS-CoV-2 Infection in Caco-2 Cells.

Viruses

Biological Science Program, Department of Biological and Environmental Science, College of Arts and Sciences, University of Qatar, Doha 2713, Qatar.

Published: March 2022

Coronavirus disease 19 (COVID-19) clinical manifestations include the involvement of the gastrointestinal tract, affecting around 10% of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)-infected children. In the present work, the consequence of a short time of viral absorption (5, 15, 30 and 60 min) was tested on the Caco-2 intestinal epithelial cell line. Our findings show that Caco-2 cells are highly permissive to SARS-CoV-2 infection, even after 5 min of viral inoculation at a multiplicity of infection of 0.1. No cytopathic effect was evident during the subsequent 7 days of monitoring; nevertheless, the immunofluorescence staining for the viral nucleocapsid confirmed the presence of intracellular SARS-CoV-2. Our findings highlight the very short time during which SARS-CoV-2 is able to infect these cells in vitro.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9031642PMC
http://dx.doi.org/10.3390/v14040704DOI Listing

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