scholarly journals Molecular Docking, Pharmacokinetic Properties and  Toxicity  Studies of  Novel Folate Conjugated To α-Tocopherol via Peptide Bond

Author(s):  
Shams H. Abdel-Hafez ◽  
Adil A. Gobouri ◽  
Anber. F. Mohammed ◽  
Mostafa A. Hussein

Abstract A novel folate conjugated to α-tocopherol (VAF) via peptide bond was Successfully synthesized by using three components vitamin e (α-tocopherol), chloro acetamide and folic acid under mild and simple conditions. The new synthesized compound was characterized by proton nuclear magnetic resonance 1H NMR, 13H NMR and Fourier transform infrared (FT-IR) analysis. A molecular docking study for targeted compound (VAF ) was performed and showed growth-inhibitory activity towards the human folate receptor alpha (FRα) that may affectively the folate uptake by cancer cells. Further, The predicted pharmacokinetic properties and toxicity of the compound (VAF) and folic acid (F) were determined using a statistical analysis (ADMET). It was suggested that pharmacokinetic properties of compound (VAF) represents a promising drug and used as anticancer agents.

Author(s):  
Jeremiah I. Ogah ◽  
Olatunji M. Kolawole ◽  
Steven O. Oguntoye ◽  
Muhammed Mustapha Suleiman

The rise in the incidence of cervical cancer globally has accentuate attention to the potential role of polyphenols as anticancer agents. Different studies have demonstrated the role of some polyphenols in altering Human Papillomavirus (HPV) carcinogenesis. Thus, this study was aimed at establishing the potentials of Schiff-based polyphenols from imesatin and satin as anticancer agents through in silico analysis. The polyphenols were synthesized and characterized using elemental analyses, spectroscopic analyses, UV-visible, Infrared, and Nuclear Magnetic Resonance (1H NMR and 13C, NMR). Molecular docking study of the polyphenols was carried out using Auto Dock Vina. The oncogenic E6 protein structure of HPV 16 was obtained from the protein bank (ID: 4XR8). The E6 proteins were prepared using AutoDock tools. Water molecules were removed from the protein molecules while hydrogen atoms were added. Also, the structures of Curcumin and Isomericitrin were obtained from PubChem. Results showed that three different Schiff based polyphenols were obtained from the synthesis; 3-(2’,4’-dimethoxy benzylidene hydrazono) indoline-2-one (DMBH), 3-(2’-hydroxy-4’-methoxy benzylidene hydrazono) indoline-2-one (HMBD), and 3-((4-4’-((2’’, 4’’-dimethoxy benzylidene amino) benzyl)phenyl)imino) indoline-2-one (DMBP). Higher ability of the docked polyphenols to bind to the E6/E6AP/p53 complex when compared to Curcumin was revealed. Also, results showed that the binding energy of Curcumin and Isomericitrin were -7.1kcal/mol and -8.4kcal/mol respectively while that of the polyphenols ranged from -7.4kcal/mol to -7.9kcal/mol. The molecular docking results of the polyphenols used in this study further confirm their potentials as strong anti-cancer agents.


2019 ◽  
Vol 87 ◽  
pp. 613-628 ◽  
Author(s):  
Elwira Chrobak ◽  
Monika Kadela-Tomanek ◽  
Ewa Bębenek ◽  
Krzysztof Marciniec ◽  
Joanna Wietrzyk ◽  
...  

Molecules ◽  
2019 ◽  
Vol 24 (6) ◽  
pp. 1066 ◽  
Author(s):  
Mohamed El-Naggar ◽  
Hanan A. Sallam ◽  
Safaa S. Shaban ◽  
Salwa S. Abdel-Wahab ◽  
Abd El-Galil E. Amr ◽  
...  

A new series of 5-(3,5-dinitrophenyl)-1,3,4-thiadiazole derivatives were prepared and evaluated for their in vitro antimicrobial, antitumor, and DHFR inhibition activity. Compounds 9, 10, 13, and 16 showed strong and broad-spectrum antimicrobial activity comparable to Amoxicillin and Fluconazole as positive antibiotic and antifungal controls, respectively. Compounds 6, 14, and 15 exhibited antitumor activity against four human cancer cell lines, CCRF-CEM leukemia, HCT-15 colon, PC-3 prostate, and UACC-257 melanoma cell lines using Doxorubicin as a reference drug. Compounds 10, 13, 14, and 15 proved to be the most active DHFR inhibitors with an IC50 range of 0.04 ± 0.82–1.00 ± 0.85 µM, in comparison with Methotrexate (IC50 = 0.14 ± 1.38 µM). The highly potent DHFR inhibitors shared a similar molecular docking mode and made a critical hydrogen bond and arene‒arene interactions via Ser59 and Phe31 amino acid residues, respectively.


2020 ◽  
Vol 17 (5) ◽  
pp. 367-381
Author(s):  
Pintu Pathare ◽  
Sunil Tekale ◽  
Rafique Shaikh ◽  
Manoj Damale ◽  
Jaiprakash Sangshetti ◽  
...  

Background: The search for new antimicrobial drugs is a never ending task due to microbial resistance to the existing drugs. Antioxidants are essential to prevent free radical reactions which lead to chronic diseases to human kind. Objective: The present studies were aimed to synthesis, characterization, antimicrobial and antioxidant activities of pyridine and benzoisothiazole decorated chalcones. Materials and Methods: FTIR spectra were recorded using KBr pellets on Shimadzu FT-IR spectrophotometer. 1H and 13C NMR spectra were recorded on Bruker 400 MHz spectrometer. Antimicrobial activity of the synthesized chalcones was found to be good against diffenet bacterial and fungal strains. Antioxidant activity was studied in terms of 2,2-diphenyl-1-picrylhydrazyl, hydroxyI and superoxide radical scavenging activities. Molecular docking was studied using Discovery Studio Visualizer Software, version 16 whereas Autodock Vina program was used to predict toxicity profile of the compounds using FAFDrugs2 predictor. Results: The compounds 5c, 5d & 6c showed good antioxidant activities. The insilico molecular docking study supports the experimental results and demonstrated that the chalcones 5d, 6a and 7a are the most active among the synthesized derivatives. Conclusion: Prediction of pharmacokinetic parameters and molecular docking studies suggest that the synthesized chalcones have good pharmacokinetic properties to act as lead molecules in the drug discovery process.


2020 ◽  
Vol 8 (1) ◽  
pp. 63-69
Author(s):  
S. Sathiyanarayanan ◽  
◽  
C.S. Venkatesan ◽  
S. Kabilan ◽  
◽  
...  

Regadenoson and Fosphenytoin are USFDA approved drugs which is used for coronary vasodilator and convulsive status epileptics respectively. It is quite natural that low levels of reagents or side products are present in the final active pharmaceutical ingredient (API) or drug product as impurities. Such impurities may have unwanted toxicities, including genotoxicity and carcinogenicity. Hence, it is important to study on impurities present in both the drugs. There are 9 impurities were identified from both drugs and studied pharmacokinetic properties using Qikprop module from Schrödinger software. From the 9 compounds of both the drug’s impurities, 5 compounds obey the Lipinski rule of five and the remaining compounds are having 1 to 3 penalties. All the compounds were subjected to molecular docking study with thermo stabilised HUMAN A2A Receptor with adenosine bound protein (PDB ID: 2YDO) for regadenoson impurities and fosphenytoin impurities were docked with Human GABA-A receptor alpha1-beta2-gamma2 subtype in complex with GABA and flumazenil, conformation A protein (PDB id: 6D6U). All the compounds are showed very good interaction with docked proteins. Further selected compound subjected to in vitro Antibacterial (Gram positive, Gram negative), Antifungal and Antioxidant (DPPH and FRAP) studies.


2018 ◽  
Vol 5 (6) ◽  
pp. 172407 ◽  
Author(s):  
Hany M. Hassanin ◽  
Rabah A. T. Serya ◽  
Wafaa R. Abd Elmoneam ◽  
Mai A. Mostafa

A series of novel pyranoquinolinone-based Schiff's bases were designed and synthesized. They were evaluated for topoisomerase IIβ (TOP2B) inhibitory activity, and cytotoxicity against breast cancer cell line (MCF-7) for the development of novel anticancer agents. A molecular docking study was employed to investigate their binding and functional properties as TOP2B inhibitors, using the D iscovery S tudio 2.5 software, where they showed very interesting ability to intercalate the DNA–topoisomerase complex. Compounds 2a , 2c and 2f showed high docking score values (82.36% −29.98 kcal mol −1 for compound 2a , 78.18% −26.98 kcal mol −1 for compound 2c and 78.65, −28.11 kcal mol −1 for compound 2f ) and revealed the highest enzyme inhibition activity. The best hit compounds exhibited highly potent TOP2B inhibitors with submicromolar IC50 at 5 µM compared to the reference doxorubicin.


2018 ◽  
Vol 5 (1) ◽  
pp. 28-32
Author(s):  
Amuthavalli A ◽  
Prakash B ◽  
Velmurugan R

New hetero annulated indoles were synthesized and structurally characterized by spectral means. In order to understand the nature of interactions of these molecules, we carried out molecular docking studies using the protein kinase CK2 inhibitors. The docking results provided some useful information for the futuredesign of more potent inhibitors. The in vitro cytotoxicity was evaluated for all the new compounds by MTT assay against HeLa and compared with the standard drug ellipticine. All the compounds showed moderate to potent activity against the cell lines. The preliminary structure–activity relationships were carried out.


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