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Nat Commun ; 13(1): 1891, 2022 04 07.
Artigo em Inglês | MEDLINE | ID: mdl-35393402

RESUMO

The SARS-CoV-2 3CL protease is a critical drug target for small molecule COVID-19 therapy, given its likely druggability and essentiality in the viral maturation and replication cycle. Based on the conservation of 3CL protease substrate binding pockets across coronaviruses and using screening, we identified four structurally distinct lead compounds that inhibit SARS-CoV-2 3CL protease. After evaluation of their binding specificity, cellular antiviral potency, metabolic stability, and water solubility, we prioritized the GC376 scaffold as being optimal for optimization. We identified multiple drug-like compounds with <10 nM potency for inhibiting SARS-CoV-2 3CL and the ability to block SARS-CoV-2 replication in human cells, obtained co-crystal structures of the 3CL protease in complex with these compounds, and determined that they have pan-coronavirus activity. We selected one compound, termed coronastat, as an optimized lead and characterized it in pharmacokinetic and safety studies in vivo. Coronastat represents a new candidate for a small molecule protease inhibitor for the treatment of SARS-CoV-2 infection for eliminating pandemics involving coronaviruses.


Assuntos
Antivirais , Tratamento Farmacológico da COVID-19 , Proteases 3C de Coronavírus , Inibidores de Proteases , Antivirais/química , Antivirais/uso terapêutico , Proteases 3C de Coronavírus/antagonistas & inibidores , Humanos , Simulação de Acoplamento Molecular , Pandemias , Inibidores de Proteases/química , Inibidores de Proteases/farmacologia , Inibidores de Proteases/uso terapêutico , SARS-CoV-2
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