Heliyon (Jan 2023)

Survival-based CRISPR genetic screens across a panel of permissive cell lines identify common and cell-specific SARS-CoV-2 host factors

  • Katherine Chan,
  • Adrian Granda Farias,
  • Hunsang Lee,
  • Furkan Guvenc,
  • Patricia Mero,
  • Kevin R. Brown,
  • Henry Ward,
  • Maximilian Billmann,
  • Kamaldeep Aulakh,
  • Audrey Astori,
  • Shahan Haider,
  • Edyta Marcon,
  • Ulrich Braunschweig,
  • Shuye Pu,
  • Andrea Habsid,
  • Amy Hin Yan Tong,
  • Natasha Christie-Holmes,
  • Patrick Budylowski,
  • Ayoob Ghalami,
  • Samira Mubareka,
  • Finlay Maguire,
  • Arinjay Banerjee,
  • Karen L. Mossman,
  • Jack Greenblatt,
  • Scott D. Gray-Owen,
  • Brian Raught,
  • Benjamin J. Blencowe,
  • Mikko Taipale,
  • Chad Myers,
  • Jason Moffat

Journal volume & issue
Vol. 9, no. 1
p. e12744

Abstract

Read online

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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