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Repurposing screen identifies novel candidates for broad-spectrum coronavirus antivirals and druggable host targets.

Sibylle Haid | Alina Matthaei | Melina Winkler | Svenja M Sake | Antonia P Gunesch | Vanessa Milke | Natalie M Köhler | Jessica Rückert | Gabrielle Vieyres | David Kühl | Tu-Trinh Nguyen | Matthias Göhl | Lisa Lasswitz | Francisco J Zapatero-Belinchón | Graham Brogden | Gisa Gerold | Bettina Wiegmann | Ursula Bilitewski | Richard J P Brown | Mark Brönstrup | Thomas F Schulz | Thomas Pietschmann
Antimicrobial agents and chemotherapy | 2024

Libraries composed of licensed drugs represent a vast repertoire of molecules modulating physiological processes in humans, providing unique opportunities for the discovery of host-targeting antivirals. We screened the Repurposing, Focused Rescue, and Accelerated Medchem (ReFRAME) repurposing library with approximately 12,000 molecules for broad-spectrum coronavirus antivirals and discovered 134 compounds inhibiting an alphacoronavirus and mapping to 58 molecular target categories. Dominant targets included the 5-hydroxytryptamine receptor, the dopamine receptor, and cyclin-dependent kinases. Gene knock-out of the drugs' host targets including cathepsin B and L (CTSB/L; VBY-825), the aryl hydrocarbon receptor (AHR; Phortress), the farnesyl-diphosphate farnesyltransferase 1 (FDFT1; P-3622), and the kelch-like ECH-associated protein 1 (KEAP1; Omaveloxolone), significantly modulated HCoV-229E infection, providing evidence that these compounds inhibited the virus through acting on their respective host targets. Counter-screening of all 134 primary compound candidates with SARS-CoV-2 and validation in primary cells identified Phortress, an AHR activating ligand, P-3622-targeting FDFT1, and Omaveloxolone, which activates the NFE2-like bZIP transcription factor 2 (NFE2L2) by liberating it from its endogenous inhibitor KEAP1, as antiviral candidates for both an Alpha- and a Betacoronavirus. This study provides an overview of HCoV-229E repurposing candidates and reveals novel potentially druggable viral host dependency factors hijacked by diverse coronaviruses.

Pubmed ID: 38319076

Associated grants

  • Agency: Niedersächsisches Ministerium für Wissenschaft und Kultur (MWK),
    Id: 14-76103-184 CORONA-13/20
  • Agency: Deutsche Forschungsgemeinschaft (DFG),
    Id: RESIST 390874280
  • Agency: Deutsches Zentrum für Infektionsforschung (DZIF),
  • Agency: Helmholtz-Alberta Initiative (HAI),
    Id: HAI-IDR
  • Agency: Deutsche Forschungsgemeinschaft (DFG),
    Id: CRC900 158989968
  • Agency: Deutsche Forschungsgemeinschaft (DFG),
    Id: 417852234
  • Agency: Knut och Alice Wallenbergs Stiftelse (Knut and Alice Wallenberg Foundation),
  • Agency: Bundesministerium für Bildung und Forschung (BMBF),
    Id: 01KI20143C
  • Agency: Niedersächsisches Ministerium für Wissenschaft und Kultur (MWK),
    Id: Niedersachsen Vorab
  • Agency: Niedersächsisches Ministerium für Wissenschaft und Kultur (MWK),
    Id: 76251-99

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