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Updated: Jun 26, 2026
11:34
High-throughput Screening for Broad-spectrum Chemical Inhibitors of RNA Viruses
Published on: May 5, 2014
13.9K
New Chemicals Suppressing SARS-CoV-2 Replication in Cell Culture
Alexey Sulimov1,2, Ivan Ilin1,2, Danil Kutov1,2
1Dimonta Ltd., 15 Nagornaya Str., Bldg 8, 117186 Moscow, Russia.
Molecules (Basel, Switzerland)
|September 9, 2022
Summary
Researchers identified novel inhibitors of the SARS-CoV-2 main protease (Mpro) using molecular modeling and experimental validation. These compounds effectively suppressed viral replication in cell cultures, offering potential for new antiviral drug development.
Area of Science:
- Medicinal Chemistry
- Computational Chemistry
- Virology
Background:
- SARS-CoV-2 main protease (Mpro) is a critical target for antiviral drug development.
- Existing non-covalent inhibitors show promise but require further optimization.
- A large compound database necessitates efficient screening methods.
Purpose of the Study:
- To identify novel SARS-CoV-2 Mpro inhibitors using computational screening.
- To validate the antiviral activity of selected compounds in cell culture.
- To explore chemical analogs for improved efficacy and low cytotoxicity.
Main Methods:
- Molecular docking using the SOL program on a database of ~19,000 compounds.
- Quantum-chemical calculations (PM7/COSMO) for protein-ligand binding enthalpy.
- In vitro antiviral assays in Vero E6 cell culture to determine EC50 values.
Main Results:
- Eighteen compounds were selected based on SOL scores and binding enthalpies for experimental testing.
- Seven compounds demonstrated SARS-CoV-2 replication inhibition with EC50 values at the micromolar level.
- 4,4-dimethyldithioquinoline derivatives showed efficacy comparable to established non-covalent inhibitors with low cytotoxicity.
Conclusions:
- Computational screening effectively identified potential SARS-CoV-2 inhibitors.
- Novel inhibitors from three chemical classes were discovered, including promising dithioquinoline derivatives.
- These findings support the development of new antiviral therapeutics against SARS-CoV-2.
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