Serveur d'exploration MERS

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Computational modeling of the bat HKU4 coronavirus 3CLpro inhibitors as a tool for the development of antivirals against the emerging Middle East respiratory syndrome (MERS) coronavirus.

Identifieur interne : 000E50 ( Main/Exploration ); précédent : 000E49; suivant : 000E51

Computational modeling of the bat HKU4 coronavirus 3CLpro inhibitors as a tool for the development of antivirals against the emerging Middle East respiratory syndrome (MERS) coronavirus.

Auteurs : Areej Abuhammad [Jordanie] ; Rua'A A. Al-Aqtash [Jordanie] ; Brandon J. Anson [États-Unis] ; Andrew D. Mesecar [États-Unis] ; Mutasem O. Taha [Jordanie]

Source :

RBID : pubmed:28608547

Descripteurs français

English descriptors

Abstract

The Middle East respiratory syndrome coronavirus (MERS-CoV) is an emerging virus that poses a major challenge to clinical management. The 3C-like protease (3CLpro ) is essential for viral replication and thus represents a potential target for antiviral drug development. Presently, very few data are available on MERS-CoV 3CLpro inhibition by small molecules. We conducted extensive exploration of the pharmacophoric space of a recently identified set of peptidomimetic inhibitors of the bat HKU4-CoV 3CLpro . HKU4-CoV 3CLpro shares high sequence identity (81%) with the MERS-CoV enzyme and thus represents a potential surrogate model for anti-MERS drug discovery. We used 2 well-established methods: Quantitative structure-activity relationship (QSAR)-guided modeling and docking-based comparative intermolecular contacts analysis. The established pharmacophore models highlight structural features needed for ligand recognition and revealed important binding-pocket regions involved in 3CLpro -ligand interactions. The best models were used as 3D queries to screen the National Cancer Institute database for novel nonpeptidomimetic 3CLpro inhibitors. The identified hits were tested for HKU4-CoV and MERS-CoV 3CLpro inhibition. Two hits, which share the phenylsulfonamide fragment, showed moderate inhibitory activity against the MERS-CoV 3CLpro and represent a potential starting point for the development of novel anti-MERS agents. To the best of our knowledge, this is the first pharmacophore modeling study supported by in vitro validation on the MERS-CoV 3CLpro .

DOI: 10.1002/jmr.2644
PubMed: 28608547


Affiliations:


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Le document en format XML

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<sup>pro</sup>
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<term>Amino Acid Sequence</term>
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<term>Antiviral Agents (pharmacology)</term>
<term>Betacoronavirus (drug effects)</term>
<term>Betacoronavirus (enzymology)</term>
<term>Binding Sites</term>
<term>Chiroptera (virology)</term>
<term>Computer Simulation</term>
<term>Ligands</term>
<term>Middle East Respiratory Syndrome Coronavirus (drug effects)</term>
<term>Models, Molecular</term>
<term>Protease Inhibitors (chemistry)</term>
<term>Protease Inhibitors (pharmacology)</term>
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<term>Quantitative Structure-Activity Relationship</term>
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<term>Reproducibility of Results</term>
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<term>Inhibiteurs de protéases</term>
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<div type="abstract" xml:lang="en">The Middle East respiratory syndrome coronavirus (MERS-CoV) is an emerging virus that poses a major challenge to clinical management. The 3C-like protease (3CL
<sup>pro</sup>
) is essential for viral replication and thus represents a potential target for antiviral drug development. Presently, very few data are available on MERS-CoV 3CL
<sup>pro</sup>
inhibition by small molecules. We conducted extensive exploration of the pharmacophoric space of a recently identified set of peptidomimetic inhibitors of the bat HKU4-CoV 3CL
<sup>pro</sup>
. HKU4-CoV 3CL
<sup>pro</sup>
shares high sequence identity (81%) with the MERS-CoV enzyme and thus represents a potential surrogate model for anti-MERS drug discovery. We used 2 well-established methods: Quantitative structure-activity relationship (QSAR)-guided modeling and docking-based comparative intermolecular contacts analysis. The established pharmacophore models highlight structural features needed for ligand recognition and revealed important binding-pocket regions involved in 3CL
<sup>pro</sup>
-ligand interactions. The best models were used as 3D queries to screen the National Cancer Institute database for novel nonpeptidomimetic 3CL
<sup>pro</sup>
inhibitors. The identified hits were tested for HKU4-CoV and MERS-CoV 3CL
<sup>pro</sup>
inhibition. Two hits, which share the phenylsulfonamide fragment, showed moderate inhibitory activity against the MERS-CoV 3CL
<sup>pro</sup>
and represent a potential starting point for the development of novel anti-MERS agents. To the best of our knowledge, this is the first pharmacophore modeling study supported by in vitro validation on the MERS-CoV 3CL
<sup>pro</sup>
.</div>
</front>
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