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Natural Compounds Inhibit SARS-CoV-2 nsp13 Unwinding and ATPase Enzyme Activities

[Image: see text] SARS-CoV-2 infection is still spreading worldwide, and new antiviral therapies are an urgent need to complement the approved vaccine preparations. SARS-CoV-2 nps13 helicase is a validated drug target participating in the viral replication complex and possessing two associated activ...

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Autores principales: Corona, Angela, Wycisk, Krzysztof, Talarico, Carmine, Manelfi, Candida, Milia, Jessica, Cannalire, Rolando, Esposito, Francesca, Gribbon, Philip, Zaliani, Andrea, Iaconis, Daniela, Beccari, Andrea R., Summa, Vincenzo, Nowotny, Marcin, Tramontano, Enzo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2022
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9003574/
https://www.ncbi.nlm.nih.gov/pubmed/35434533
http://dx.doi.org/10.1021/acsptsci.1c00253
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author Corona, Angela
Wycisk, Krzysztof
Talarico, Carmine
Manelfi, Candida
Milia, Jessica
Cannalire, Rolando
Esposito, Francesca
Gribbon, Philip
Zaliani, Andrea
Iaconis, Daniela
Beccari, Andrea R.
Summa, Vincenzo
Nowotny, Marcin
Tramontano, Enzo
author_facet Corona, Angela
Wycisk, Krzysztof
Talarico, Carmine
Manelfi, Candida
Milia, Jessica
Cannalire, Rolando
Esposito, Francesca
Gribbon, Philip
Zaliani, Andrea
Iaconis, Daniela
Beccari, Andrea R.
Summa, Vincenzo
Nowotny, Marcin
Tramontano, Enzo
author_sort Corona, Angela
collection PubMed
description [Image: see text] SARS-CoV-2 infection is still spreading worldwide, and new antiviral therapies are an urgent need to complement the approved vaccine preparations. SARS-CoV-2 nps13 helicase is a validated drug target participating in the viral replication complex and possessing two associated activities: RNA unwinding and 5′-triphosphatase. In the search of SARS-CoV-2 direct antiviral agents, we established biochemical assays for both SARS-CoV-2 nps13-associated enzyme activities and screened both in silico and in vitro a small in-house library of natural compounds. Myricetin, quercetin, kaempferol, and flavanone were found to inhibit the SARS-CoV-2 nps13 unwinding activity at nanomolar concentrations, while licoflavone C was shown to block both SARS-CoV-2 nps13 activities at micromolar concentrations. Mode of action studies showed that all compounds are nsp13 noncompetitive inhibitors versus ATP, while computational studies suggested that they can bind both nucleotide and 5′-RNA nsp13 binding sites, with licoflavone C showing a unique pattern of interaction with nsp13 amino acid residues. Overall, we report for the first time natural flavonoids as selective inhibitors of SARS-CoV-2 nps13 helicase with low micromolar activity.
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spelling pubmed-90035742022-04-13 Natural Compounds Inhibit SARS-CoV-2 nsp13 Unwinding and ATPase Enzyme Activities Corona, Angela Wycisk, Krzysztof Talarico, Carmine Manelfi, Candida Milia, Jessica Cannalire, Rolando Esposito, Francesca Gribbon, Philip Zaliani, Andrea Iaconis, Daniela Beccari, Andrea R. Summa, Vincenzo Nowotny, Marcin Tramontano, Enzo ACS Pharmacol Transl Sci [Image: see text] SARS-CoV-2 infection is still spreading worldwide, and new antiviral therapies are an urgent need to complement the approved vaccine preparations. SARS-CoV-2 nps13 helicase is a validated drug target participating in the viral replication complex and possessing two associated activities: RNA unwinding and 5′-triphosphatase. In the search of SARS-CoV-2 direct antiviral agents, we established biochemical assays for both SARS-CoV-2 nps13-associated enzyme activities and screened both in silico and in vitro a small in-house library of natural compounds. Myricetin, quercetin, kaempferol, and flavanone were found to inhibit the SARS-CoV-2 nps13 unwinding activity at nanomolar concentrations, while licoflavone C was shown to block both SARS-CoV-2 nps13 activities at micromolar concentrations. Mode of action studies showed that all compounds are nsp13 noncompetitive inhibitors versus ATP, while computational studies suggested that they can bind both nucleotide and 5′-RNA nsp13 binding sites, with licoflavone C showing a unique pattern of interaction with nsp13 amino acid residues. Overall, we report for the first time natural flavonoids as selective inhibitors of SARS-CoV-2 nps13 helicase with low micromolar activity. American Chemical Society 2022-04-01 /pmc/articles/PMC9003574/ /pubmed/35434533 http://dx.doi.org/10.1021/acsptsci.1c00253 Text en © 2022 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by-nc-nd/4.0/Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Corona, Angela
Wycisk, Krzysztof
Talarico, Carmine
Manelfi, Candida
Milia, Jessica
Cannalire, Rolando
Esposito, Francesca
Gribbon, Philip
Zaliani, Andrea
Iaconis, Daniela
Beccari, Andrea R.
Summa, Vincenzo
Nowotny, Marcin
Tramontano, Enzo
Natural Compounds Inhibit SARS-CoV-2 nsp13 Unwinding and ATPase Enzyme Activities
title Natural Compounds Inhibit SARS-CoV-2 nsp13 Unwinding and ATPase Enzyme Activities
title_full Natural Compounds Inhibit SARS-CoV-2 nsp13 Unwinding and ATPase Enzyme Activities
title_fullStr Natural Compounds Inhibit SARS-CoV-2 nsp13 Unwinding and ATPase Enzyme Activities
title_full_unstemmed Natural Compounds Inhibit SARS-CoV-2 nsp13 Unwinding and ATPase Enzyme Activities
title_short Natural Compounds Inhibit SARS-CoV-2 nsp13 Unwinding and ATPase Enzyme Activities
title_sort natural compounds inhibit sars-cov-2 nsp13 unwinding and atpase enzyme activities
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9003574/
https://www.ncbi.nlm.nih.gov/pubmed/35434533
http://dx.doi.org/10.1021/acsptsci.1c00253
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