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Antiviral Drug Screen Identifies DNA-Damage Response Inhibitor as Potent Blocker of SARS-CoV-2 Replication

Mary Wilson

Well-known member
Publication History: Accepted: March 12, 2021

Published:March 17, 2021
DOI: https://doi.org/10.1016/j.celrep.2021.108940
Highlights
  • Kinase inhibitor screen identified 34 compounds with anti-SARS-CoV-2 activity
  • Inhibitors targeted mTOR-PI3K-AKT and DNA-damage response (DDR) signaling pathways
  • ATR kinase inhibitor berzosertib blocked SARS-CoV-1, SARS-CoV-2, and MERS-CoV infection
  • Treatment with berzosertib blocks SARS-CoV-2 at post entry level in epithelial cells
https://www.cell.com/cell-reports/fulltext/S2211-1247(21)00254-0#secsectitle0010
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PDF Format:

SUMMARY

SARS-CoV-2 has currently precipitated the COVID-19 global health crisis. We developed a medium-throughput drug screening system and identified a small molecule library of 34 of 4307 protein kinase inhibitors that were capable of inhibiting SARS-CoV-2 cytopathic effect in humanepithelial cells. These drug inhibitors are in various stages of clinical trials. We detected key proteins involved in cellular signaling pathways mTOR-PI3K-AKT, ABL-BCR/MAPK, and DNA-Damage Response that are critical for SARS-CoV-2 infection. A drug-protein interaction based secondary screen confirmed compounds such as the ATR kinase inhibitor berzosertib and torin2 with anti SARS-CoV-2 activity. Berzosertib exhibited potent antiviral activity against SARS-CoV-2 in multiple cell types and blocked replication at post-entry step. Berzosertib inhibited replication of SARS-CoV-1 and MERS-CoV as well. Our study highlights key promising kinase inhibitors to constrain coronavirus replication as a host-directed therapy in the treatment of COVID-19 and beyond as well as provides an important mechanism of host-pathogeninteractions.

https://www.cell.com/action/showPdf?pii=S2211-1247(21)00254-0
 
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