IN SILICO MOLECULAR DOCKING STUDY OF CONSTITUENTS FROM APPLE AND PASSION FRUIT FOR THE TREATMENT OF INFLAMMATORY BOWEL DISORDER TARGETING INFLAMMATORY PATHWAY

INDIAN DRUGS ◽  
2021 ◽  
Vol 58 (01) ◽  
pp. 47-63
Author(s):  
V. S. Arya ◽  
◽  
S. K. Kanthlal

Inflammatory bowel disorder is a group of inflammatory conditions of the colon and small intestine with greater prevalence among the Indian population. Our focus is to explore and compare the therapeutic potential of phytoconstituents from apple and passion fruit by assessing the affinity with the target sites such as JAK/STAT, MPO and iNOS by molecular docking studies. ADMET prediction and drug-likeness were also conducted to screen out the best-fit ligands, whic are expected to be biologically effective. Few selected constituents displayed considerable binding affinity with the selected targets in our docking study. Interestingly, ligands of phenolic nature displayed the highest inhibitory activity by forming strong hydrogen bonding and van der Waals force with the amino acid residues of the target protein. Comparative study proves that constituents of apple showed better effect than passion fruit. It helps to give the existing information to identify precise targets for the selected drugs. However, the results are preliminary and experimental evaluation needs to be done for obtaining the confirmatory results.

2021 ◽  
Vol 14 (7) ◽  
pp. 685
Author(s):  
Sandra Amanda Kozieł ◽  
Monika Katarzyna Lesiów ◽  
Daria Wojtala ◽  
Edyta Dyguda-Kazimierowicz ◽  
Dariusz Bieńko ◽  
...  

A group of cytotoxic half-sandwich iridium(III) complexes with aminomethyl(diphenyl)phosphine derived from fluoroquinolone antibiotics exhibit the ability to (i) accumulate in the nucleus, (ii) induce apoptosis, (iii) activate caspase-3/7 activity, (iv) induce the changes in cell cycle leading to G2/M phase arrest, and (v) radicals generation. Herein, to elucidate the cytotoxic effects, we investigated the interaction of these complexes with DNA and serum proteins by gel electrophoresis, fluorescence spectroscopy, circular dichroism, and molecular docking studies. DNA binding experiments established that the complexes interact with DNA by moderate intercalation and predominance of minor groove binding without the capability to cause a double-strand cleavage. The molecular docking study confirmed two binding modes: minor groove binding and threading intercalation with the fluoroquinolone part of the molecule involved in pi stacking interactions and the Ir(III)-containing region positioned within the major or minor groove. Fluorescence spectroscopic data (HSA and apo-Tf titration), together with molecular docking, provided evidence that Ir(III) complexes can bind to the proteins in order to be transferred. All the compounds considered herein were found to bind to the tryptophan residues of HSA within site I (subdomain II A). Furthermore, Ir(III) complexes were found to dock within the apo-Tf binding site, including nearby tyrosine residues.


2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Joshua Oluwasegun Bamidele ◽  
George Oche Ambrose ◽  
Oluwaseun Suleiman Alakanse

AbstractHSP90 is observed as one of the copious molecular chaperones that play a key role in mediating appropriate folding, maturation, and firmness of many client proteins in cells. The expression rate of HSP90 in cancer cells is at a level of 2- to 10-fold higher than the 1- to 2-fold of its unstressed and healthy ones. To combat this, several inhibitors to HSP90 protein have been studied (such as geldanamycin and its derivative 17-AAG and 17-DMAG) and have shown some primary side effects including plague, nausea, vomiting, and liver toxicity, hence the search for the best-in-class inhibitor for this protein through in silico. This study is aimed at analyzing the inhibitory potency of oxypeucedanin-a furocoumarin derivations, which have been reported to have antipoliferative activity in human prostrate carcinoma DN145 cells, and three other drug candidates retrieved from the literature via computational docking studies. The results showed oxypeucedanin as the compound with the highest binding energy of −9.2 kcal/mol. The molecular docking study was carried out using PyRx, Auto Dock Vina option, and the target was validated to confirm the proper target and the docking procedure employed for this study.


Plants ◽  
2022 ◽  
Vol 11 (2) ◽  
pp. 208
Author(s):  
Ahlam Elwekeel ◽  
Dalia El Amir ◽  
Enas I. A. Mohamed ◽  
Elham Amin ◽  
Marwa H. A. Hassan ◽  
...  

The current study accentuates the significance of performing the multiplex approach of LC-HRESIMS, biological activity, and docking studies in drug discovery, taking into consideration a review of the literature. In this regard, the investigation of antioxidant and cytotoxic activities of Trigonella stellata collected from the Egyptian desert revealed a significant antioxidant capacity using DPPH with IC50 = 656.9 µg/mL and a moderate cytotoxicity against HepG2, MCF7, and CACO2, with IC50 values of 53.3, 48.3, and 55.8 µg/mL, respectively. The evaluation of total phenolic and flavonoid contents resulted in 32.8 mg GAE/g calculated as gallic acid equivalent and 5.6 mg RE/g calculated as rutin equivalent, respectively. Chemical profiling of T. stellata extract, using LC-HRESIMS analysis, revealed the presence of 15 metabolites, among which eleven compounds were detected for the first time in this species. Interestingly, in vitro testing of the antidiabetic activity of the alcoholic extract noted an α-glucosidase enzyme inhibitory activity (IC50 = 559.4 µg/mL) better than that of the standard Acarbose (IC50 = 799.9 µg/mL), in addition to a moderate inhibition of the α-amylase enzyme (IC50 = 0.77 µg/mL) compared to Acarbose (IC50 = 0.21 µg/mL). α-Glucosidase inhibition was also virtualized by binding interactions through the molecular docking study, presenting a high binding activity of six flavonoid glycosides, as well as the diterpenoid compound graecumoside A and the alkaloid fenugreekine. Taken together, the conglomeration of LC-HRESIMS, antidiabetic activity, and molecular docking studies shed light on T. stellata as a promising antidiabetic herb.


2020 ◽  
Vol 32 (6) ◽  
pp. 1482-1490
Author(s):  
Manju Mathew ◽  
Raja Chinnamanayakar ◽  
Ezhilarasi Muthuvel Ramanathan

A series of 1-(5-(5-(4-chlorophenyl)furan-2-yl)-4,5-dihyropyrazol-1-yl ethanone (5a-h) was synthesized through E-(3-(5-(4-chloro-phenyl)furan-2-yl)-1-phenylprop-2-en-1-one (3a-h) with hydrazine monohydrate and sodium acetate. Totally, eight compounds were synthesized and their structures were elucidated by infrared, 1H & 13C NMR, elemental analysis, antimicrobial studies, in silico molecular docking studies and also in silico ADME prediction. Antimicrobial studies of the synthesized compounds showed good to moderate activity against the all the stains compared with standard drugs. in silico Molecular docking study was carried out using bacterial protein and BC protein. Synthesized compounds (5a-h) showed good docking score compared with ciprofloxacin. Antimicrobial study was carried out for 4-chlorophenyl furfuran pyrazole derivatives (5a-h). The results of assessment of toxicities, drug likeness and drug score profiles of compounds (5a-j) are promising


2019 ◽  
Vol 31 (11) ◽  
pp. 2453-2456
Author(s):  
J. Brindha ◽  
T.F. Abbs Fen Reji

A series of 2-alkylamino-4-(3-coumarinyl)thiazoles were synthesized, characterized and evaluated their anticancer activity through molecular docking studies. Cell division protein kinase 2 (PDB code: 1KE9) is selected as a target and the compounds which obeys Lipinski rule of five is selected as a ligand. Molecular docking study is carried out using AutoDock Vina in PyRx virtual screening tool. This study revealed that all the compounds are active against the molecular target and compounds 5a and 5c have the highest docking score.


Molecules ◽  
2019 ◽  
Vol 24 (6) ◽  
pp. 1002 ◽  
Author(s):  
Noor Almandil ◽  
Muhammad Taha ◽  
Rai Farooq ◽  
Amani Alhibshi ◽  
Mohamed Ibrahim ◽  
...  

We have synthesized quinoxaline analogs (1–25), characterized by 1H-NMR and HREI-MS and evaluated for thymidine phosphorylase inhibition. Among the series, nineteen analogs showed better inhibition when compared with the standard inhibitor 7-Deazaxanthine (IC50 = 38.68 ± 4.42 µM). The most potent compound among the series is analog 25 with IC50 value 3.20 ± 0.10 µM. Sixteen analogs 1, 2, 3, 4, 5, 6, 7, 12, 13, 14, 15, 16, 17, 18, 21 and 24 showed outstanding inhibition which is many folds better than the standard 7-Deazaxanthine. Two analogs 8 and 9 showed moderate inhibition. A structure-activity relationship has been established mainly based upon the substitution pattern on the phenyl ring. The binding interactions of the active compounds were confirmed through molecular docking studies.


2021 ◽  
Vol 12 (2) ◽  
pp. 1385-1396

Currently, the entire globe is under the deadliest pandemic of Covid-19 caused by Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2). At present, no specific treatment is available to combat COVID-19 infection. Euphorbia hirta (Euphorbiaceae) have been reported for a variety of biological activities, including antiviral. The present investigation aimed to identify potential phytoconstituents of the plant E. hirta from the category flavonoids and coumarins against the SARS-CoV-2 using in silico approach. The molecular docking studies were performed using two different targets of SARS-CoV-2, namely Main protease (Mpro; PDB ID: 6M2N) and RNA-dependent RNA polymerase (RdRp; PDB ID: 7BW4). Based on the molecular docking study in comparison with standard drug, four compounds, namely Euphrobianin, Quercetin, 3-o-alpha-rhamnoside, Isoquercitrin, and rutin, were screened against the target Mpro. Three phytoconstituents, euphorbianin, myricetin, and rutin, were screened against the target RdRp. In the in silico toxicity studies of screened phytoconstituents, except myrectin all were predicted safe. Results of euphorbianin and rutin were found more interesting as both compounds had high binding affinity against both targets. Finally, we want to conclude that euphrobianin, quercetin 3-o-alpha-rhamnoside, isoquercitrin, and rutin could be further explored rapidly as they may have the potential to fight against COVID-19.


2021 ◽  
Vol 59 (4) ◽  
pp. 441
Author(s):  
Hoàng Thị Kim Dung ◽  
Hoang-Phuc Nguyen ◽  
Thi-Kim-Chi Huynh

Discovering and developing drugs to treat Alzheimer's disease (AD) have been a crucial target for many decades. According to a large number of later studies, acetylcholinesterase (AChE) plays an important role in AD treatment. On the other hand, flavonoids are natural compounds that possessed a wide variety of bioactivities, including the inhibitory activity on AChE. In this study, we reported the structure and activity relationship of flavone and flavanone derivatives that semi-synthesized and synthesized from flower buds of Styphnolobium japonicum (Leguminosae) and citrus peels against AChE. The results showed that the introducing of the new functional groups that leads to increasing 3-folds better AChE inhibition of compound Q2 and Q4 than that of the original. The molecular docking study was investigated in order to illuminate the experimental results and find their binding modes.


Author(s):  
Touhami Lanez ◽  
Elhafnaoui Lanez

In the present study, the interaction of the protein structure of Escherichia coli DNA Gyrase-A (EcGyr-A) extracted from protein data bank (PDB Code: 1AB4) with ligands N-ferrocenylmethyl-2-nitroaniline (2FMNA), N-ferrocenylmethyl-3-nitroaniline (3FMNA) and N-ferrocenylmethyl-4-nitroaniline (4FMNA) were investigated by performing docking studies using the Molegro Virtual Docker (MVD) software. The results obtained showed that the best poses which is derived from MolDock score for Escherichia coli DNA Gyrase-A were respectively equal to-92.0111, -96.0866 and-95.6808 with reranking score equal to-40.9575, -73.4476 and-73.6423. Calculations revealed that 3FMNA react strongly with EcGyr-A followed by 4-FMNA and 2-FMNA.


2021 ◽  
Vol 21 (2) ◽  
pp. 452
Author(s):  
Endang Astuti ◽  
Tri Joko Raharjo ◽  
Putra Boang Manalu ◽  
Ilham Satria Putra ◽  
Stephanus Satria Waskitha ◽  
...  

This research involves the synthesis, antimalarial evaluation, and molecular docking of several curcumin analogs. A total of six curcumin analog compounds were synthesized using aldol condensation using hydrochloric acid and sodium hydroxide catalysts. The synthesized compounds were elucidated using FTIR, 1H-NMR, 13C-NMR, and LC-MS/MS. Subsequently, all curcumin analogs were tested as an antimalarial agent against Plasmodium falciparum 3D7 strain, and their mechanism of action was evaluated through a molecular docking study. Six curcumin analogs, i.e. 2,6-bis(2-hydroxybenzylidene)cyclohexanone; 2,6-bis(2-hydroxybenzylidene)cyclopentanone; 1.5-bis(2-hydroxyphenyl)penta-1,4-diene-3-one; 2,6-bis(3-hydroxybenzylidene)cyclo-hexanone; 2,6-bis(3-hydroxybenzylidene)cyclopentanone; and 1,5-bis(3-hydroxy-phenyl)penta-1,4-diene-3-one have been successfully synthesized. In addition, 2,6-bis(2-hydroxybenzylidene) cyclopentanone demonstrated the lowest IC50 value and binding affinity of 0.04 µM and -7.6 kcal/mol, respectively. Based on molecular docking studies, this compound also showed the most potent antimalarial activity targeted at PfATP6.


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