Drug Repurposing Studies Targeting SARS-nCoV2: An Ensemble Docking Approach on Drug Target 3C-like Protease (3CLpro)

2020 ◽  
Author(s):  
Shruti Koulgi ◽  
Vinod Jani ◽  
Mallikarjunachari Uppuladinne ◽  
Uddhavesh Sonavane ◽  
Asheet Kumar Nath ◽  
...  
Keyword(s):  
Drug Repurposing ◽  
Drug Binding ◽  
Ensemble Docking ◽  
Drug Molecules ◽  
Drug Binding Site ◽  
Main Protease ◽  
Docking Approach ◽  
Novel Coronavirus ◽  
Markov State Modeling ◽  
Viral Polyprotein

<p>The COVID-19 pandemic has been responsible for several deaths worldwide. The causative agent behind this disease is the Severe Acute Respiratory Syndrome – novel Coronavirus 2 (SARS-nCoV2). SARS-nCoV2 belongs to the category of RNA viruses. The main protease, responsible for the cleavage of the viral polyprotein is considered as one of the hot targets for treating COVID-19. Earlier reports suggest the use of HIV anti-viral drugs for targeting the main protease of SARS-CoV, which caused SARS in the year 2002-03. Hence, drug repurposing approach may prove to be useful in targeting the main protease of SARS-nCoV2. The high-resolution crystal structure of 3CL<sup>pro</sup> (main protease) of SARS-nCoV2 (PDB ID: 6LU7) was used as the target. The Food and Drug Administration (FDA) approved and SWEETLEAD database of drug molecules were screened. The apo form of the main protease was simulated for a cumulative of 150 ns and 10 μs open source simulation data was used, to obtain conformations for ensemble docking. The representative structures for docking were selected using RMSD-based clustering and Markov State Modeling analysis. This ensemble docking approach for main protease helped in exploring the conformational variation in the drug binding site of the main protease leading to efficient binding of more relevant drug molecules. The drugs obtained as best hits from the ensemble docking possessed anti-bacterial and anti-viral properties. Small molecules with these properties may prove to be useful to treat symptoms exhibited in COVID-19. This <i>in-silico</i> ensemble docking approach would support identification of potential candidates for repurposing against COVID-19.</p>

Drug Repurposing Studies Targeting SARS-nCoV2: An Ensemble Docking Approach on Drug Target 3C-like Protease (3CLpro)

2020 ◽  
Author(s):  
Shruti Koulgi ◽  
Vinod Jani ◽  
Mallikarjunachari Uppuladinne ◽  
Uddhavesh Sonavane ◽  
Asheet Kumar Nath ◽  
...  
Keyword(s):  
Drug Repurposing ◽  
Drug Binding ◽  
Ensemble Docking ◽  
Drug Molecules ◽  
Drug Binding Site ◽  
Main Protease ◽  
Docking Approach ◽  
Novel Coronavirus ◽  
Markov State Modeling ◽  
Viral Polyprotein

<p>The COVID-19 pandemic has been responsible for several deaths worldwide. The causative agent behind this disease is the Severe Acute Respiratory Syndrome – novel Coronavirus 2 (SARS-nCoV2). SARS-nCoV2 belongs to the category of RNA viruses. The main protease, responsible for the cleavage of the viral polyprotein is considered as one of the hot targets for treating COVID-19. Earlier reports suggest the use of HIV anti-viral drugs for targeting the main protease of SARS-CoV, which caused SARS in the year 2002-03. Hence, drug repurposing approach may prove to be useful in targeting the main protease of SARS-nCoV2. The high-resolution crystal structure of 3CL<sup>pro</sup> (main protease) of SARS-nCoV2 (PDB ID: 6LU7) was used as the target. The Food and Drug Administration (FDA) approved and SWEETLEAD database of drug molecules were screened. The apo form of the main protease was simulated for a cumulative of 150 ns and 10 μs open source simulation data was used, to obtain conformations for ensemble docking. The representative structures for docking were selected using RMSD-based clustering and Markov State Modeling analysis. This ensemble docking approach for main protease helped in exploring the conformational variation in the drug binding site of the main protease leading to efficient binding of more relevant drug molecules. The drugs obtained as best hits from the ensemble docking possessed anti-bacterial and anti-viral properties. Small molecules with these properties may prove to be useful to treat symptoms exhibited in COVID-19. This <i>in-silico</i> ensemble docking approach would support identification of potential candidates for repurposing against COVID-19.</p>

scholarly journals COVID19 Approved Drug Repurposing: Pocket Similarity Approach

2020 ◽  
Author(s):  
Mohamed Fadlalla
Keyword(s):  
Binding Site ◽  
Binding Sites ◽  
Drug Repurposing ◽  
Drug Binding ◽  
Drug Binding Site ◽  
Main Protease ◽  
Major Outbreak ◽  
Target Binding ◽  
Approved Drugs

<p>SARS CoV 2 has spread worldwide and caused a major outbreak of coronavirus disease 2019 (COVID-19). To date, no licensed drug or a vaccine is available against COVID19.</p><p>Starting from all of the resolved SARS CoV2 crystal structures, this study aims to find inhibitors for all of the SARS CoV2 proteins. To achieve this, I used PocketMatch to test the similarity of approved drugs binding sites against all of the binding sites found on SARS CoV 2 proteins. After that docking was used to confirm the results.</p><p>I found drugs that inhibit the main protease, Nsp12 and Nsp3. The discovered drugs are either in clinical trials (Sildenafil, Lopinavir, Ritonavir) or have in vitro antiviral activity (Nelfinavir, Indinavir, Amprenavir, depiqulinum , Gemcitabine, Raltitrexed, Aprepitant, montelukast, Ouabain, Raloxifene) whether against SARS CoV 2 or other viruses. In addition to this, further analysis of pockets revealed a steroidal pocket that might open the door to hypotheses on why the mortality of men is higher than women.</p><p>Many of the in silico repurposing studies test binding of the compound to the target using docking. The significance of this study adds to the similarity between the drug binding site and the target binding site. This takes into consideration the dynamic behaviour of the pocket after ligand binding.</p><div><br></div>

scholarly journals COVID19 Approved Drug Repurposing: Pocket Similarity Approach

2020 ◽  
Author(s):  
Mohamed Fadlalla
Keyword(s):  
Binding Site ◽  
Binding Sites ◽  
Drug Repurposing ◽  
Drug Binding ◽  
Drug Binding Site ◽  
Main Protease ◽  
Major Outbreak ◽  
Target Binding ◽  
Approved Drugs

<p>SARS CoV 2 has spread worldwide and caused a major outbreak of coronavirus disease 2019 (COVID-19). To date, no licensed drug or a vaccine is available against COVID19.</p><p>Starting from all of the resolved SARS CoV2 crystal structures, this study aims to find inhibitors for all of the SARS CoV2 proteins. To achieve this, I used PocketMatch to test the similarity of approved drugs binding sites against all of the binding sites found on SARS CoV 2 proteins. After that docking was used to confirm the results.</p><p>I found drugs that inhibit the main protease, Nsp12 and Nsp3. The discovered drugs are either in clinical trials (Sildenafil, Lopinavir, Ritonavir) or have in vitro antiviral activity (Nelfinavir, Indinavir, Amprenavir, depiqulinum , Gemcitabine, Raltitrexed, Aprepitant, montelukast, Ouabain, Raloxifene) whether against SARS CoV 2 or other viruses. In addition to this, further analysis of pockets revealed a steroidal pocket that might open the door to hypotheses on why the mortality of men is higher than women.</p><p>Many of the in silico repurposing studies test binding of the compound to the target using docking. The significance of this study adds to the similarity between the drug binding site and the target binding site. This takes into consideration the dynamic behaviour of the pocket after ligand binding.</p><div><br></div>

scholarly journals Drug repurposing studies targeting SARS-CoV-2: an ensemble docking approach on drug target 3C-like protease (3CLpro)

2020 ◽  
pp. 1-21 ◽  
Author(s):  
Shruti Koulgi ◽  
Vinod Jani ◽  
Mallikarjunachari Uppuladinne ◽  
Uddhavesh Sonavane ◽  
Asheet Kumar Nath ◽  
...  
Keyword(s):  
Drug Target ◽  
Drug Repurposing ◽  
Ensemble Docking ◽  
Docking Approach

scholarly journals Main Protease Inhibitors and Drug Surface Hotspot for the Treatment of COVID-19: Drug Repurposing and Molecular Docking Approach

2020 ◽  
Author(s):  
Mahmudul Hasan ◽  
Md Sorwer Alam Parvez ◽  
Kazi Faizul Azim ◽  
Abdus Shukur Imran ◽  
Topu Raihan ◽  
...  
Keyword(s):  
Molecular Docking ◽  
Drug Repurposing ◽  
Pharmacokinetic Parameters ◽  
The Novel ◽  
Drug Candidates ◽  
Target Drug ◽  
Global Pandemic ◽  
Main Protease ◽  
Docking Approach ◽  
Repurposed Drugs

<div>The world is facing an unprecedented global pandemic caused by the novel SARS-CoV-2. In the absence</div><div>of a specific therapeutic agent to treat COVID-19 patients, the present study aimed to virtually screen out</div><div>the effective drug candidates from the approved main protease protein (MPP) inhibitors and their</div><div>derivatives for the treatment of SARS-CoV-2. Here, drug repurposing and molecular docking were</div><div>employed to screen approved MPP inhibitors and their derivatives. The approved MPP inhibitors against</div><div>HIV and HCV were prioritized, whilst hydroxychloroquine, favipiravir, remdesivir, and alpha-ketoamide</div><div>were studied as control. The target drug surface hotspot was also investigated through the molecular</div><div>docking technique. ADME analysis was conducted to understand the pharmacokinetics and drug-likeness</div><div>of the screened MPP inhibitors. The result of this study revealed that Paritaprevir (-10.9 kcal/mol), and its</div><div>analog (CID 131982844)(-16.3 kcal/mol) showed better binding affinity than the approved MPP inhibitor</div><div>compared in this study including favipiravir, remdesivir, and alpha-ketoamide. A comparative study among</div><div>the screened putative MPP inhibitors revealed that amino acids T25, T26, H41, M49, L141, N142, G143,</div><div>C145, H164, M165, E166, D187, R188, and Q189 are at critical positions for becoming the surface hotspot</div><div>in the MPP of SARS-CoV-2. The study also suggested that paritaprevir and its' analog (CID 131982844),</div><div>may be effective against SARS-CoV-2 as these molecules had the common drug-surface hotspots on the</div><div>main protease protein of SARS-CoV-2. Other pharmacokinetic parameters also indicate that paritaprevir</div><div>and its top analog (CID 131982844) will be either similar or better-repurposed drugs than already approved</div><div>MPP inhibitors. </div><div><br></div>

scholarly journals Computational Drug Repurposing Studies on the ACE2-Spike (RBD) Interface of SARS-CoV-2

2020 ◽  
Author(s):  
Vinod Jani ◽  
Shruti Koulgi ◽  
Mallikarjunachari Uppuladinne V N ◽  
Uddhavesh Sonavane ◽  
Rajendra Joshi
Keyword(s):  
Transmembrane Protein ◽  
Drug Repurposing ◽  
Binding Pocket ◽  
Drug Binding ◽  
Tinospora Cordifolia ◽  
Strong Interactions ◽  
Angiotensin Converting Enzyme 2 ◽  
Ligand Free ◽  
Novel Coronavirus ◽  
Dynamics Simulations

<p>The novel coronavirus is known to enter the cell by binding to the human transmembrane protein Angiotensin-Converting Enzyme 2 (ACE2). The S(Spike)-glycoprotein of the SARS-CoV-2 forms a complex with the ACE2. Thus, the S-glycoprotein is one of the hot targets, as it forms the first line of contact between the virus and the human cell. Drug repurposing would help in identifying drugs that are safe and have no or fewer side effects. Hence, in addition to the Food and Drug Administration (FDA) approved molecules the compounds from natural sources were also considered. The current study includes docking and simulations of the FDA approved molecules and phytochemicals from Indian medicinal plants, targeting the ACE2-Spike protein complex. Rutin DAB10 and swertiapuniside were obtained as the top-ranked drugs from these two databases, respectively. The molecular dynamics simulations of ligand-free, rutin DAB10-bound, and swertiapuniside-bound ACE2-Spike complex revealed crucial ACE2-Spike interface residues forming strong interactions with the two ligands molecules. This may infer, that they may affect the ACE2 and spike binding. The conformational flexibility in the drug-binding pocket was captured using the RMSD-based clustering of the ligand-free simulations. An ensemble docking was performed wherein the two databases were docked on each of the representatives of ACE2-Spike obtained through clustering. The potential phytochemicals identified belonged to <i>Withania somnifera, Swertia chirayita, Tinospora cordifolia, Andrographis paniculata, Piper longum, and Azadirachta indica</i>. The FDA molecules identified were rutin DAB10, fulvestrant, cefoperazone acid, escin, chlorhexidine diacetate, echinacoside, capreomycin sulfate, and elbasvir.</p>

scholarly journals Evaluation of Yashtimadhu (Glycyrrhiza glabra) active Phytochemicals Against Novel Coronavirus (SARS-CoV-2)

2020 ◽  
Author(s):  
Dharmendra Kumar Maurya
Keyword(s):  
Viral Entry ◽  
Virus Disease ◽  
Scientific Basis ◽  
Docking Studies ◽  
Angiotensin Converting Enzyme 2 ◽  
Main Protease ◽  
Docking Approach ◽  
Novel Coronavirus ◽  
Approved Drugs ◽  
Fda Approved Drugs

Abstract Corona Virus Disease 2019 (COVID-19) caused by a novel coronavirus emerged from Wuhan, China in December 2019. It has spread to more than 205 countries and become pandemic now. Currently, there are no FDA approved drugs or vaccines available and hence several studies are going on in search of suitable drug that can target viral proteins or host receptor for the prevention and management of COVID-19. The search for plant-based anti-viral agents against the SARS-CoV-2 is promising because several of plants have been shown to possess anti-viral activities against different viruses. Here, we used molecular docking approach to explore the use of Indian Ayurvedic herbs, Yashtimadhu in prevention and management of COVID-19. In the present study we have evaluated the effectiveness of phytochemicals found in Yashtimadhu against Main Protease (Mpro), Spike (S) protein and RNA-dependent RNA polymerase (RdRp) of SARS-CoV-2 as well as human angiotensin converting enzyme 2 (ACE2) receptor and furin protease. Apart from this, we have also performed in-silico drug-likeness and predicted pharmacokinetics of the selected phytochemicals found in the Yashtimadhu. Our study shows that several phytochemicals found in this plant have potential to bind with important proteins of SARS-CoV-2 which are essential for viral infection and replication. Overall our study provides scientific basis in terms of binding of active ingredients present in Yashtimadhu with SARS-CoV-2 target proteins. Our docking studies reveal that Yashtimadhu may inhibit the viral severity by interfering with viral entry as well as its multiplication in the infected persons. Thus Yashtimadhu may be helpful in the prevention and management of the COVID-19.

scholarly journals Case Study of High-Throughput Drug Screening and Remote Data Collection for SARS-CoV-2 Main Protease by Using Serial Femtosecond X-ray Crystallography

Crystals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1579
Author(s):  
Omur Guven ◽  
Mehmet Gul ◽  
Esra Ayan ◽  
J Austin Johnson ◽  
Baris Cakilkaya ◽  
...  
Keyword(s):  
Data Collection ◽  
High Throughput ◽  
Drug Screening ◽  
Dynamic Range ◽  
Drug Repurposing ◽  
Low Noise ◽  
Drug Binding ◽  
Array Detector ◽  
X Ray ◽  
Main Protease

Since early 2020, COVID-19 has grown to affect the lives of billions globally. A worldwide investigation has been ongoing for characterizing the virus and also for finding an effective drug and developing vaccines. As time has been of the essence, a crucial part of this research has been drug repurposing; therefore, confirmation of in silico drug screening studies have been carried out for this purpose. Here we demonstrated the possibility of screening a variety of drugs efficiently by leveraging a high data collection rate of 120 images/second with the new low-noise, high dynamic range ePix10k2M Pixel Array Detector installed at the Macromolecular Femtosecond Crystallography (MFX) instrument at the Linac Coherent Light Source (LCLS). The X-ray Free-Electron Laser (XFEL) is used for remote high-throughput data collection for drug repurposing of the main protease (Mpro) of SARS-CoV-2 at ambient temperature with mitigated X-ray radiation damage. We obtained multiple structures soaked with nine drug candidate molecules in two crystal forms. Although our drug binding attempts failed, we successfully established a high-throughput Serial Femtosecond X-ray crystallographic (SFX) data collection protocol.

scholarly journals Peptide Derivatives of the Zonulin Inhibitor Larazotide (AT1001) as Potential Anti SARS CoV-2: Molecular Modelling, Synthesis and Bioactivity Evaluation

2021 ◽  
Vol 22 (17) ◽  
pp. 9427
Author(s):  
Simone Di Micco ◽  
Simona Musella ◽  
Marina Sala ◽  
Maria C. Scala ◽  
Graciela Andrei ◽  
...  
Keyword(s):  
Catalytic Domain ◽  
Antiviral Agents ◽  
Antiviral Drug ◽  
Drug Repurposing ◽  
Fast Response ◽  
Main Protease ◽  
Promising Target ◽  
Peptide Derivatives ◽  
Novel Coronavirus ◽  
Derivatives Of

A novel coronavirus, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has been identified as the pathogen responsible for the outbreak of a severe, rapidly developing pneumonia (Coronavirus disease 2019, COVID-19). The virus enzyme, called 3CLpro or main protease (Mpro), is essential for viral replication, making it a most promising target for antiviral drug development. Recently, we adopted the drug repurposing as appropriate strategy to give fast response to global COVID-19 epidemic, by demonstrating that the zonulin octapeptide inhibitor AT1001 (Larazotide acetate) binds Mpro catalytic domain. Thus, in the present study we tried to investigate the antiviral activity of AT1001, along with five derivatives, by cell-based assays. Our results provide with the identification of AT1001 peptide molecular framework for lead optimization step to develop new generations of antiviral agents of SARS-CoV-2 with an improved biological activity, expanding the chance for success in clinical trials.

scholarly journals In Silico Identification and Docking-Based Drug Repurposing Against the Main Protease of SARS-CoV-2, Causative Agent of COVID-19

2020 ◽  
Author(s):  
Yogesh Kumar ◽  
Harvijay Singh
Keyword(s):  
Virtual Screening ◽  
Active Site ◽  
Viral Infections ◽  
Drug Repurposing ◽  
Docking Study ◽  
Docking Studies ◽  
Main Protease ◽  
Novel Coronavirus ◽  
Approved Drugs

<div>The rapidly enlarging COVID-19 pandemic caused by novel SARS-coronavirus 2 is a global</div><div>public health emergency of unprecedented level. Therefore the need of a drug or vaccine that</div><div>counter SARS-CoV-2 is an utmost requirement at this time. Upon infection the ssRNA genome</div><div>of SARS-CoV-2 is translated into large polyprotein which further processed into different</div><div>nonstructural proteins to form viral replication complex by virtue of virus specific proteases:</div><div>main protease (3-CL protease) and papain protease. This indispensable function of main protease</div><div>in virus replication makes this enzyme a promising target for the development of inhibitors and</div><div>potential treatment therapy for novel coronavirus infection. The recently concluded α-ketoamide</div><div>ligand bound X-ray crystal structure of SARS-CoV-2 Mpro (PDB ID: 6Y2F) from Zhang et al.</div><div>has revealed the potential inhibitor binding mechanism and the determinants responsible for</div><div>involved molecular interactions. Here, we have carried out a virtual screening and molecular</div><div>docking study of FDA approved drugs primarily targeted for other viral infections, to investigate</div><div>their binding affinity in Mpro active site. Virtual screening has identified a number of antiviral</div><div>drugs, top ten of which on the basis of their bending energy score are further examined through </div><div>molecular docking with Mpro. Docking studies revealed that drug Lopinavir-Ritonavir, Tipranavir</div><div>and Raltegravir among others binds in the active site of the protease with similar or higher</div><div>affinity than the crystal bound inhibitor α-ketoamide. However, the in-vitro efficacies of the drug</div><div>molecules tested in this study, further needs to be corroborated by carrying out biochemical and</div><div>structural investigation. Moreover, this study advances the potential use of existing drugs to be</div><div>investigated and used to contain the rapidly expanding SARS-CoV-2 infection.</div>

Sign in / Sign up

Export Citation Format

Share Document