Molecular Docking Reveals Ivermectin and Remdesivir as Potential Repurposed Drugs Against SARS-CoV-2

Eweas et al., Frontiers in Microbiology, doi:10.3389/fmicb.2020.592908, Jan 2021
Ivermectin for COVID-19
4th treatment shown to reduce risk in August 2020, now with p < 0.00000000001 from 106 studies, recognized in 24 countries.
Lower risk for mortality, ventilation, ICU, hospitalization, recovery, cases, and viral clearance.
No treatment is 100% effective. Protocols combine treatments.
6,300+ studies for 210+ treatments. c19early.org
Meta Analysis
Molecular docking analysis showing that ivermectin efficiently binds to the viral S protein as well as the human cell surface receptors ACE-2 and TMPRSS2; therefore, it might be involved in inhibiting the entry of the virus into the host cell. It also binds to Mpro and PLpro of SARS-CoV-2; therefore, it might play a role in preventing the post-translational processing of viral polyproteins. The highly efficient binding of ivermectin to the viral N phosphoprotein and nsp14 is suggestive of its role in inhibiting viral replication and assembly.
74 preclinical studies support the efficacy of ivermectin for COVID-19:
34 in silico studies1-34
26 in vitro studies2,35-59
14 in vivo animal studies46,52,59-70
Ivermectin, better known for antiparasitic activity, is a broad spectrum antiviral with activity against many viruses including H7N771, Dengue37,72,73, HIV-173, Simian virus 4074, Zika37,75,76, West Nile76, Yellow Fever77,78, Japanese encephalitis77, Chikungunya78, Semliki Forest virus78, Human papillomavirus57, Epstein-Barr57, BK Polyomavirus79, and Sindbis virus78.
Ivermectin inhibits importin-α/β-dependent nuclear import of viral proteins71,73,74,80, shows spike-ACE2 disruption at 1nM with microfluidic diffusional sizing38, binds to glycan sites on the SARS-CoV-2 spike protein preventing interaction with blood and epithelial cells and inhibiting hemagglutination41,81, shows dose-dependent inhibition of wildtype and omicron variants36, exhibits dose-dependent inhibition of lung injury61,66, may inhibit SARS-CoV-2 via IMPase inhibition37, may inhibit SARS-CoV-2 induced formation of fibrin clots resistant to degradation9, inhibits SARS-CoV-2 3CLpro54, may inhibit SARS-CoV-2 RdRp activity28, may minimize viral myocarditis by inhibiting NF-κB/p65-mediated inflammation in macrophages60, may be beneficial for COVID-19 ARDS by blocking GSDMD and NET formation82, may interfere with SARS-CoV-2's immune evasion via ORF8 binding4, may inhibit SARS-CoV-2 by disrupting CD147 interaction83-86, shows protection against inflammation, cytokine storm, and mortality in an LPS mouse model sharing key pathological features of severe COVID-1959,87, may be beneficial in severe COVID-19 by binding IGF1 to inhibit the promotion of inflammation, fibrosis, and cell proliferation that leads to lung damage8, may minimize SARS-CoV-2 induced cardiac damage40,48, may counter immune evasion by inhibiting NSP15-TBK1/KPNA1 interaction and restoring IRF3 activation88, may disrupt SARS-CoV-2 N and ORF6 protein nuclear transport and their suppression of host interferon responses1, reduces TAZ/YAP nuclear import, relieving SARS-CoV-2-driven suppression of IRF3 and NF-κB antiviral pathways35, increases Bifidobacteria which play a key role in the immune system89, has immunomodulatory51 and anti-inflammatory70,90 properties, and has an extensive and very positive safety profile91.
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Eweas et al., 25 Jan 2021, peer-reviewed, 3 authors.
In silico studies are an important part of preclinical research, however results may be very different in vivo.
Molecular Docking Reveals Ivermectin and Remdesivir as Potential Repurposed Drugs Against SARS-CoV-2
Ahmad F Eweas, Amr A Alhossary, Ahmed S Abdel-Moneim
Frontiers in Microbiology, doi:10.3389/fmicb.2020.592908
SARS-CoV-2 is a newly emerged coronavirus that causes a respiratory disease with variable severity and fatal consequences. It was first reported in Wuhan and subsequently caused a global pandemic. The viral spike protein binds with the ACE-2 cell surface receptor for entry, while TMPRSS2 triggers its membrane fusion. In addition, RNA dependent RNA polymerase (RdRp), 3 -5 exoribonuclease (nsp14), viral proteases, N, and M proteins are important in different stages of viral replication. Accordingly, they are attractive targets for different antiviral therapeutic agents. Although many antiviral agents have been used in different clinical trials and included in different treatment protocols, the mode of action against SARS-CoV-2 is still not fully understood. Different potential repurposed drugs, including, chloroquine, hydroxychloroquine, ivermectin, remdesivir, and favipiravir, were screened in the present study. Molecular docking of these drugs with different SARS-CoV-2 target proteins, including spike and membrane proteins, RdRp, nucleoproteins, viral proteases, and nsp14, was performed. Moreover, the binding affinities of the human ACE-2 receptor and TMPRSS2 to the different drugs were evaluated. Molecular dynamics simulation and MM-PBSA calculation were also conducted. Ivermectin and remdesivir were found to be the most promising drugs. Our results suggest that both these drugs utilize different mechanisms at the entry and post-entry stages and could be considered potential inhibitors of SARS-CoV-2 replication.
AUTHOR CONTRIBUTIONS ASA-M contributed conception of the study and critically revised the manuscript. AFE conducted the molecular docking and wrote the first draft of the manuscript. AAA performed the molecular dynamics simulation. ASA-M, AFE, and AAA shared analyzing and discussing the results. All authors contributed to manuscript revision, read, and approved the submitted version. SUPPLEMENTARY MATERIAL The Supplementary Material for this article can be found online at: https://www.frontiersin.org/articles/10.3389/fmicb.2020. 592908/full#supplementary-material Supplementary Figure 3 | RMSD and number of Hydrogen bonds. For every receptor, the RMSD and Hydrogen bonds number for each ligand were demonstrated. Conflict of Interest: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
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DOI record: { "DOI": "10.3389/fmicb.2020.592908", "ISSN": [ "1664-302X" ], "URL": "http://dx.doi.org/10.3389/fmicb.2020.592908", "abstract": "<jats:p>SARS-CoV-2 is a newly emerged coronavirus that causes a respiratory disease with variable severity and fatal consequences. It was first reported in Wuhan and subsequently caused a global pandemic. The viral spike protein binds with the ACE-2 cell surface receptor for entry, while TMPRSS2 triggers its membrane fusion. In addition, RNA dependent RNA polymerase (RdRp), 3′–5′ exoribonuclease (nsp14), viral proteases, N, and M proteins are important in different stages of viral replication. Accordingly, they are attractive targets for different antiviral therapeutic agents. Although many antiviral agents have been used in different clinical trials and included in different treatment protocols, the mode of action against SARS-CoV-2 is still not fully understood. Different potential repurposed drugs, including, chloroquine, hydroxychloroquine, ivermectin, remdesivir, and favipiravir, were screened in the present study. Molecular docking of these drugs with different SARS-CoV-2 target proteins, including spike and membrane proteins, RdRp, nucleoproteins, viral proteases, and nsp14, was performed. Moreover, the binding affinities of the human ACE-2 receptor and TMPRSS2 to the different drugs were evaluated. Molecular dynamics simulation and MM-PBSA calculation were also conducted. Ivermectin and remdesivir were found to be the most promising drugs. 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Please send us corrections, updates, or comments. c19early involves the extraction of 200,000+ datapoints from thousands of papers. Community updates help ensure high accuracy. Treatments and other interventions are complementary. All practical, effective, and safe means should be used based on risk/benefit analysis. No treatment or intervention is 100% available and effective for all current and future variants. We do not provide medical advice. Before taking any medication, consult a qualified physician who can provide personalized advice and details of risks and benefits based on your medical history and situation. IMA and WCH provide treatment protocols.
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