Anticancer potential of Cu(II)prolinedithiocarbamate complex: design, synthesis, spectroscopy, molecular docking, molecular dynamic, ADMET, and in-vitro studies

Synthesis, characterization, biological activity and computation-based efficacy of cobalt(II) complexes of biphenyl-2-ol against SARS-CoV-2 virus

Cobalt(II) complexes of biphenyl-2-ol of composition, CoCl2-n(OC6H4C6H5-2)n(H2O)4 (where n = 1 or 2), were prepared by reacting cobaltous(II) chloride with equi- and bimolar ratios of sodium salt of biphenyl-2-ol. The structural characterization of the synthesized complexes was accomplished by NMR, FTIR, thermogravimetry (TGA), high resolution mass spectroscopy (HRMS), electronic spectroscopic techniques coupled with density functional theory (DFT). The stability of the complexes in different pH media of solvent was studied. Chemical reactivity parameters of the newly synthesized complexes, computed using DFT, indicated greater reactivity of complex 2 over complex 1 and free ligand as indicated by its low HOMO-LUMO energy gap corresponding to 1.71 eV. Molecular docking (MD) studies were carried out in order to study the binding affinities between amino acid residues of DNA duplex (PDB ID: 1BNA) and SARS-CoV-2 (PDB ID: 7T9K) with newly synthesized complexes. Complex 2 has shown promising antivirus behaviour with an inhibition constant value of 0.0423 µmol-1 with amino acid residues of SARS-CoV-2 virus. Toxicity of the complexes was predicted using ProTox-II online server. Antibacterial studies have indicated the complexes to exhibit greater efficacy than the free ligand, while the antioxidant activities have suggested them to display enhanced antioxidant behaviour as compared to reference compounds.Communicated by Ramaswamy H. Sarma.

Design anticancer potential of Zn(II)isoleucinedithiocarbamate complex on MCF-7 cell lines: synthesis, characterization, molecular docking, molecular dynamic, ADMET, and in-vitro studies

Cisplatin is a cancer medication widely used today, but it still poses some problems due to its toxic properties in the body. To overcome this issue, a new complex has been developed as a potential anticancer drug prospect by minimizing its toxic consequences. A novel Zn(II)IleDTC complex containing isoleucine dithiocarbamate ligands has been produced and analyzed using a range of analytical and spectroscopic methods. The Zn(II) IleDTC complex were characterized using various methods, including UV-Vis spectroscopy, FT-IR, determination of melting point, conductivity, and HOMO-LUMO analysis. Furthermore, computational NMR spectrum analysis was conducted in this study. Molecular docking studies was conducted to evaluate the potential of Zn(II) isoleucine dithiocarbamate as an HIF1 inhibitor. The results showed that the Zn complex exhibited a good docking score of -6.6 and formed hydrogen bonds with ARG 17, VAL264, and GLU15, alkyl bonds with TRP27 and LEU32, and Pi-Alkyl bonds with PRO41 and ARG44. This suggests that the Zn(II) isoleucine dithiocarbamate complex could be a promising candidate for cancer treatment with potential HIF1 inhibition properties. To assess the dynamic stability and efficacy of protein-ligand interactions over time, molecular dynamics simulations was conducted for both individual proteins and protein complexes. The cytotoxicity evaluation of Zn(II) isoleucine dithiocarbamate against MCF-7 cells obtained an IC50 value of 362.70 µg/mL indicating moderate cytotoxicity and morphological changes of cancer cells causing cancer cells to undergo apoptosis. The Zn(II) isoleucine dithiocarbamate complex may have promising potential as an anticancer compound due to its significant inhibitory effect on the breast cancer cell line (MCF7). According to the ADMET study, the complex exhibits drug-like characteristics with low toxicity, further supporting its potential as a viable drug candidate.

In Silico Approach Triterpene Glycoside of H. atra Targeting Orotidine 5-Monophosphate Decarboxylase Protein (PfOMPDC) in P. falciparum Infection Mechanism

This study accessed the potential antimalarial activity of triterpene glycoside of H. atra through targeting orotidine 5-monophosphate decarboxylase protein (PfOMPDC) in P. falciparum by molecular docking. Nine triterpene glycosides from H. atra extract modeled the structure by the Corina web server and interacted with PfOMPDC protein by using Hex 8.0.0. The docking results were visualized and analyzed by Discovery Studio version 21.1.1. 17-Hydroxyfuscocineroside B showed the lowest binding energy in PfOMPDC interaction, which was -1,098.13 kJ/mol. Holothurin A3, echinoside A, and fuscocineroside C showed low binding energy. Nine triterpene glycosides of H. atra performed interaction with PfOMPDC protein at the same region. Holothurin A1 posed interaction with PfOMPDC protein by 8 hydrogen bonds, 3 hydrophobic interactions, and 8 unfavorable bonds. Several residues were detected in the same active sites of other triterpene glycosides. Residue TYR111 was identified in all triterpene glycoside complexes, except holothurin A3 and calcigeroside B. In summary, the triterpene glycoside of H. atra is potentially a drug candidate for malaria therapeutic agents. In vitro and in vivo studies were required for further investigation.

Synthesis, characterization, molecular docking studies of Mn(II)Prolinedithiocarbamate and its potential as anticancer agents

Breast cancer is a non-communicable disease but dangerous for women, and research on anti-breast cancer drug compounds is being investigated. Mn(II)Prolinedithiocarbamate (MnProDtc) complex was synthesized and characterized in cytotoxicity and in silico assay by molecular docking. Dithiocarbamate ligand plays an important role as an anticancer agent. Melting point determination, conductivity, UV-Vis spectroscopy, FT-IR spectroscopy, XRD, and HOMO-LUMO have been studied. The binding of MnProDtc to cancer cells was examined by molecular docking, showing that the active sites of the MCF-7 strain, namely the protein O(6)-methylguanine-DNA methyltransferase (MGMT), caspase-8, and the estrogen receptor, bind to the complex. The results of the cytotoxic test of MCF-7 cancer cells undergoing apoptosis at a concentration of 37.50 μg/ml with an IC50 value of 453.96 μg/ml showed moderate anticancer activity in MCF-7 cancer cells.

3D-QSAR, molecular docking, simulation dynamic and ADMET studies on new quinolines derivatives against colorectal carcinoma activity

Cancer is the uncontrolled spread of abnormal cells that results in abnormal tissue growth in the affected organ. One of the most important organs is exposed to the growth of colon cancer cells, which start in the large intestine (colon) or the rectum. Several therapeutic protocols were used to treat different kinds of cancer. Recently, several studies have targeted tubulin and microtubules due to their remarkable prefoliation. Also, recent research shows that quinoline compounds have significant efficacy against human colorectal cancer. So, the present work investigated the potential of thirty quinoline compounds as tubulin inhibitors using computational methods. A 3D-QSAR approach using two contours (CoMFA and CoMSIA), molecular docking simulation to determine the binding type of the complexes (ligand-receptor), molecular dynamics simulation and identifying pharmacokinetic characteristics were used to design molecules. For all compounds designed (T1-5), molecular docking was used to compare the stability by type of binding. The ADMET has been utilized for molecules with good stability in molecular docking (T1-3); these compounds have good medicinal characteristics. Furthermore, a molecular dynamics simulation (MD) at 100 ns was performed to confirm the stability of the T1-3 compounds; the molecules (T1-3) remained the most stable throughout the simulation. The compounds T1, T2 and T3 are the best-designed drugs for colorectal carcinoma treatments.Communicated by Ramaswamy H. Sarma.

Molecular docking, molecular dynamics, MM/PBSA approaches and bioactivity studies of nepetanudoside B isolated from endemic Nepeta aristata

Nepetanudoside B (NNB) was isolated from aerial parts of endemic Nepeta aristata crude extract (CH3OH-CHCl3) using silica gel (n-hexane, methanol, ethyl acetate, and dichlorometane, respectively) and sephadex LH-20 (65% Methanol-35% Chloroform) column chromatographies. Preparative-HPLC was used to purify NNB after activity-guided isolation of methanol sub-fractions with enzyme inhibitory and DNA protective properties. The NNB was determined using 1H,13C, COSY, HSQC, HMBC, and LC-MS/MS. The study compared the effects of NNB with conventional drugs in terms of its ability to inhibit enzymes such as urease, α-amylase, carbonic anhydrase (CA), lipase, α-glucosidase, and tyrosinase, as well as its ability to protect DNA. Enzyme kinetic and molecular docking were also used to evaluate this. NNB exhibited the best inhibitory activity on urease (1.28 ± 0.00 µg/mL), lipase (5.83 ± 0.10 µg/mL), BChE (3.73 ± 0.46 µg/mL), tyrosinase (7.39 ± 0.00 µg/mL), α-glucosidase (10.95 ± 0.00 µg/mL), α-amylase (22.11 ± 1.03 µg/mL) and AChE (25.68 ± 3.32 µg/mL), respectively. NNB has higher MolDock scores with binding energy in α-glucosidase (-233) and BChE (-8.90 kcal/mol). In enzyme kinetics studies, it was determined that urease, AChE, α-glucosidase, lipase, and CA were non-competitive , while BChE and tyrosinase were competitive inhibition mechanisms. Their Ki values were calculated as 0.09, 0.24, 0.09, 0.10, 0.08, 0.05, and 0.07 mM, respectively. Molecular dynamics simulation studies were performed for the interactions of NNB-BChE with MM/PBSA binding free energey RMSD, RMSF, Rg, SASA, and also the number of hydrogen bonds was calculated. The suitability and effectiveness of NNB have been proven in the food and pharmaceutical industries. The NNB molecule may lead to development studies as a BChE inhibitor.