Molecular docking and simulation studies on SARS-CoV-2 M pro reveals Mitoxantrone, Leucovorin, Birinapant, and Dynasore as potent drugs against COVID-19
Kiran Bharat Lokhande, Sayali Doiphode, Renu Vyas, K. Venkateswara Swamy
Abstract
The outbreak of novel coronavirus (COVID-19), which began from Wuhan City, Hubei, China, and declared as a Public Health Emergency of International Concern by World Health Organization (WHO) on 30 th January 2020. The present study describes how the available drug candidates can be used as a potential SARS-CoV-2 M pro inhibitor by molecular docking and molecular dynamic simulation studies. Drug repur- posing strategy is applied by using the library of antiviral and FDA approved drugs retrieved from the Selleckchem Inc. (Houston, TX,http://www.selleckchem.com) and DrugBank database respectively. Computational methods like molecular docking and molecular dynamics simulation were used. The molecular docking calculations were performed using LeadIT FlexX software. The molecular dynamics simulations of 100ns were performed to study conformational stability for all complex systems. Mitoxantrone and Leucovorin from FDA approved drug library and Birinapant and Dynasore from anti- viral drug libraries interact with SARS-CoV-2 M pro at higher efficiency as a result of the improved steric and hydrophobic environment in the binding cavity to make stable complex. Also, the molecular dynam- ics simulations of 100ns revealed the mean RMSD value of 2.25 Å for all the complex systems. This shows that lead compounds bound tightly within the M pro cavity and thus having conformational stability. Glutamic acid (Glu166) of M pro is a key residue to hold and form a stable complex of reported lead com- pounds by forming hydrogen bonds and salt bridge. Our findings suggest that Mitoxantrone, Leucovorin, Birinapant, and Dynasore represents potential inhibitors of SARS-CoV-2 M pro .
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