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Chan, Katherine; Farias, Adrian Granda; Lee, Hunsang; Guvenc, Furkan; Mero, Patricia; Brown, Kevin R.; Ward, Henry; Billmann, Maximilian; Aulakh, Kamaldeep; Astori, Audrey; Haider, Shahan; Marcon, Edyta; Braunschweig, Ulrich; Pu, Shuye; Habsid, Andrea; Yan Tong, Amy Hin; Christie-Holmes, Natasha; Budylowski, Patrick; Ghalami, Ayoob; Mubareka, Samira; Maguire, Finlay; Banerjee, Arinjay; Mossman, Karen L.; Greenblatt, Jack; Gray-Owen, Scott D.; Raught, Brian; Blencowe, Benjamin J.; Taipale, Mikko; Myers, Chad; Moffat, Jason
Heliyon, January 2023, 2023-Jan, 2023-01-00, 20230101, 2023-01-01, Volume: 9, Issue: 1Journal Article
SARS-CoV-2 depends on host cell components for infection and replication. Identification of virus-host dependencies offers an effective way to elucidate mechanisms involved in viral infection and replication. If druggable, host factor dependencies may present an attractive strategy for anti-viral therapy. In this study, we performed genome wide CRISPR knockout screens in Vero E6 cells and four human cell lines including Calu-3, UM-UC-4, HEK-293 and HuH-7 to identify genetic regulators of SARS-CoV-2 infection. Our findings identified only ACE2, the cognate SARS-CoV-2 entry receptor, as a common host dependency factor across all cell lines, while other host genes identified were largely cell line specific, including known factors TMPRSS2 and CTSL. Several of the discovered host-dependency factors converged on pathways involved in cell signalling, immune-related pathways, and chromatin modification. Notably, the chromatin modifier gene KMT2C in Calu-3 cells had the strongest impact in preventing SARS-CoV-2 infection when perturbed.
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