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Movahedi E, Razmazma H, Rezvani A, Nowroozi A, Ebrahimi A, Eigner V, Dusek M, Arjmand F. A novel Cu(II)-based DNA-intercalating agent: Structural and biological insights using biophysical and in silico techniques. Spectrochim Acta A Mol Biomol Spectrosc 2023; 293:122438. [PMID: 36758364 DOI: 10.1016/j.saa.2023.122438] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Revised: 01/14/2023] [Accepted: 02/01/2023] [Indexed: 06/18/2023]
Abstract
A new mixed-ligand Cu(II) complex formulated as [Cu(dipic)(amp)(H2O)].H2O (dipic: pyridine-2,6-dicarboxylic acid, amp: 2-amino-4-methylpyridine), was synthesized and structurally characterized by FTIR spectroscopy, CHN analysis, and the single-crystal X-ray crystallographic method. The complex crystallizes in an orthorhombic space group Pna21, and the coordination environment around the metal center was found to be a pentacoordinate CuN2O2OW distorted square-pyramidal geometry. In order to systematically explore a detailed in vitro and in silico study of the DNA binding of the title complex, various biophysical (UV-Vis absorption spectroscopy, fluorescence, competitive binding with ethidium bromide) and theoretical (DFT, molecular docking simulation, and QM/MM) methods were applied which revealed that the complex could intercalate with the insertion of the amp ligand between the DNA base pairs. The experimental thermodynamic parameters of the interaction revealed the spontaneity of the process and the domination of the hydrophobic interactions in the association and stabilization of the DNA-Cu(II) complex adduct, which was in line with the docking and QM/MM data. In vitro cytotoxic potential of the complex against the human breast adenocarcinoma (MCF-7) cells was examined using MTT assay, which indicated that cancerous cells showed inhibition in presence of the complex.
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Affiliation(s)
- Elaheh Movahedi
- Department of Chemistry, Faculty of Science, University of Sistan and Baluchestan, Zahedan, Iran
| | - Hafez Razmazma
- Laboratory of Computational Quantum Chemistry and Drug Design, Department of Chemistry, University of Sistan and Baluchestan, Zahedan, Iran
| | - Alireza Rezvani
- Department of Chemistry, Faculty of Science, University of Sistan and Baluchestan, Zahedan, Iran.
| | - Alireza Nowroozi
- Department of Chemistry, Faculty of Science, University of Sistan and Baluchestan, Zahedan, Iran.
| | - Ali Ebrahimi
- Laboratory of Computational Quantum Chemistry and Drug Design, Department of Chemistry, University of Sistan and Baluchestan, Zahedan, Iran
| | - Vaclav Eigner
- Institute of Physics of the Czech Academy of Sciences, Na Slovance 2, 18221, Prague 8, Czech Republic
| | - Michal Dusek
- Institute of Physics of the Czech Academy of Sciences, Na Slovance 2, 18221, Prague 8, Czech Republic
| | - Farukh Arjmand
- Department of Chemistry, Aligarh Muslim University, Aligarh, UP 202002, India
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Movahedi E, Razmazma H, Rezvani A, Ebrahimi A. Binding profile of a mixed-ligand silver(I) complex with DNA and Topoisomerase I. Comput Biol Chem 2023; 103:107831. [PMID: 36822076 DOI: 10.1016/j.compbiolchem.2023.107831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 02/07/2023] [Accepted: 02/13/2023] [Indexed: 02/17/2023]
Abstract
A new mixed-ligand Ag(I) complex, [Ag(daf)(phen)]NO3 (daf = 4,5-diazafluoren-9-one and dian = N-(4,5-diazafluoren-9-ylidene)aniline), was synthesized. The elemental analysis, FTIR, 1HNMR, UV-Vis spectroscopy, cyclic voltammetry, and DFT (Density Functional Theory) geometry optimization method were applied in order to predict the Ag(I) complex structure which concluded to a distorted tetrahedral N4 coordination around the Ag(I) center. A detailed in silico analysis of the bioaffinity of the complex to DNA and human DNA-Topoisomerase I was conducted using molecular docking simulations and ONIOM (Our own N-layered Integrated molecular Orbital and molecular Mechanics) techniques. In this overall scenario, the results suggest the dominance of π-π stacking interactions of the heteroaromatic ligands in the intercalating pocket of DNA and the active site of the enzyme and the rational correlation between being a good intercalator and a potent Topoisomerase I inhibitor. In vitro DNA-binding experiments by spectrophotometric, spectrofluorometric, Voltammetric, and viscometric techniques at physiological pH also confirmed the computational results. The complex inhibited MCF-7 cell growth in a dose-dependent manner while being nontoxic on HUVEC normal cells.
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Affiliation(s)
- Elaheh Movahedi
- Department of Chemistry, University of Sistan and Baluchestan, Zahedan, Iran
| | - Hafez Razmazma
- Laboratory of Computational Quantum Chemistry and Drug Design, Department of Chemistry, University of Sistan and Baluchestan, Zahedan, Iran
| | - Alireza Rezvani
- Department of Chemistry, University of Sistan and Baluchestan, Zahedan, Iran.
| | - Ali Ebrahimi
- Laboratory of Computational Quantum Chemistry and Drug Design, Department of Chemistry, University of Sistan and Baluchestan, Zahedan, Iran
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Eid J, Razmazma H, Jraij A, Ebrahimi A, Monticelli L. On Calculating the Bending Modulus of Lipid Bilayer Membranes from Buckling Simulations. J Phys Chem B 2020; 124:6299-6311. [DOI: 10.1021/acs.jpcb.0c04253] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jad Eid
- University of Lyon, CNRS, Molecular Microbiology and Structural Biochemistry (MMSB, UMR 5086), F-69007 Lyon, France
- Bioactive Molecules Research Laboratory, Doctoral School of Sciences and Technologies, Faculty of Sciences, Lebanese University, Beirut VHH9+P3, Lebanon
| | - Hafez Razmazma
- University of Lyon, CNRS, Molecular Microbiology and Structural Biochemistry (MMSB, UMR 5086), F-69007 Lyon, France
- Laboratory of Computational Quantum Chemistry and Drug Design, Department of Chemistry, University of Sistan and Baluchestan, Zahedan 98167-45845, Iran
| | - Alia Jraij
- Bioactive Molecules Research Laboratory, Doctoral School of Sciences and Technologies, Faculty of Sciences, Lebanese University, Beirut VHH9+P3, Lebanon
| | - Ali Ebrahimi
- Laboratory of Computational Quantum Chemistry and Drug Design, Department of Chemistry, University of Sistan and Baluchestan, Zahedan 98167-45845, Iran
| | - Luca Monticelli
- University of Lyon, CNRS, Molecular Microbiology and Structural Biochemistry (MMSB, UMR 5086), F-69007 Lyon, France
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Razmazma H, Ebrahimi A, Hashemi M. Structural insights for rational design of new PIM-1 kinase inhibitors based on 3,5-disubstituted indole derivatives: An integrative computational approach. Comput Biol Med 2020; 118:103641. [PMID: 32174320 DOI: 10.1016/j.compbiomed.2020.103641] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 01/24/2020] [Accepted: 01/29/2020] [Indexed: 12/13/2022]
Abstract
Proviral integration Moloney virus (PIM) 1, 2, and 3 kinases are a family of constitutively active serine/threonine kinases that are involved in a number of signaling pathways important to cancer cells. Their overexpression in a variety of human hematopoietic malignancies and solid tumors suggest that inhibition of PIM signaling could provide patients with therapeutic benefit. In this study, a series of 3,5-disubstituted indole derivatives have been systematically studied using three-dimensional quantitative structure-activity relationship (3D-QSAR) analysis, molecular docking simulation, and partial least-squares (PLS) analysis methods to explore the influence of the structural characteristics on the inhibitory activity and use them to propose novel bioactive molecules. The comparative molecular field and comparative molecular similarity indices analyses (CoMFA and CoMSIA) models exhibited a good correlation between the predicted and experimental activities with excellent predictive capability and yielded statistically reliable value (CoMFA: Q2 = 0.535, R2 = 0.987, r2pred = 0.909; CoMSIA: Q2 = 0.785, R2 = 0.989, r2pred = 0.969). Based on the CoMFA and CoMSIA models and docking results, ten novel potent PIM-1 inhibitors (N1-N10) have been designed and the molecular models have validated their inhibitory activities. These results provided strong theoretical guidance for the development of novel PIM-1 inhibitors.
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Affiliation(s)
- Hafez Razmazma
- Laboratory of Computational Quantum Chemistry and Drug Design, Department of Chemistry, University of Sistan and Baluchestan, Zahedan, Iran
| | - Ali Ebrahimi
- Laboratory of Computational Quantum Chemistry and Drug Design, Department of Chemistry, University of Sistan and Baluchestan, Zahedan, Iran.
| | - Mohammad Hashemi
- Department of Clinical Biochemistry, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
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Movahedi E, Rezvani AR, Razmazma H. Binding interaction of a heteroleptic silver(I) complex with DNA: A joint experimental and computational study. Int J Biol Macromol 2019; 126:1244-1254. [PMID: 30615962 DOI: 10.1016/j.ijbiomac.2019.01.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 01/02/2019] [Accepted: 01/03/2019] [Indexed: 12/11/2022]
Abstract
A new heteroleptic Ag(I) complex formulated as [Ag(daf)(phen)]NO3, where daf and phen stand for 4,5-diazafluoren-9-one and 1,10-phenanthroline, respectively, has been prepared and structurally characterized by elemental analysis, spectroscopic methods (IR, 1HNMR, and UV-Vis) and cyclic voltammetry. The geometry optimization around Ag(I) at the level of DFT has demonstrated that the Ag(I) center has been nested in a tetrahedral N4 coordination geometry which found to be in close agreement with the experimentally proposed structure. The bond lengths, angles, and the HOMO/LUMO energies have been calculated to substantiate the geometry of the complex. The DNA binding property of the Ag(I) complex has been explored in detail both theoretically (DFT and molecular docking) and experimentally (UV-Vis absorption spectroscopy, circular dichroism spectroscopy, luminescence quenching, competitive binding with ethidium bromide, cyclic voltammetry, and gel electrophoresis), indicating the good affinity of the Ag(I) complex for the intercalation (Kb (binding constant) = 3.45 × 105 M-1). Providing a fuller picture of Ag(I) complex-DNA interaction, the energy-minimized structure of the complex has been docked to the DNA with a d(AGACGTCT)2 sequence and the results are in close agreement with experimental achievements and make a deeper insight into the relationship between the structure and biological activity of the complex.
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Affiliation(s)
- Elaheh Movahedi
- Department of Chemistry, University of Sistan and Baluchestan, P.O. Box 98135-674, Zahedan, Iran
| | - Ali Reza Rezvani
- Department of Chemistry, University of Sistan and Baluchestan, P.O. Box 98135-674, Zahedan, Iran.
| | - Hafez Razmazma
- Department of Chemistry, Laboratory of Computational Quantum Chemistry and Drug Design, University of Sistan and Baluchestan, Zahedan, Iran
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Razmazma H, Ebrahimi A. The effects of cation–π and anion–π interactions on halogen bonds in the [N⋯X⋯N]+ complexes: A comprehensive theoretical study. J Mol Graph Model 2018; 84:134-144. [DOI: 10.1016/j.jmgm.2018.06.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2018] [Revised: 05/20/2018] [Accepted: 06/07/2018] [Indexed: 01/15/2023]
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