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Dorafshan Tabatabai AS, Dehghanian E, Mansouri-Torshizi H, Feizi-Dehnayebi M. Computational and experimental examinations of new antitumor palladium(II) complex: CT-DNA-/BSA-binding, in-silico prediction, DFT perspective, docking, molecular dynamics simulation and ONIOM. J Biomol Struct Dyn 2024; 42:5447-5469. [PMID: 37349936 DOI: 10.1080/07391102.2023.2226715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Accepted: 06/12/2023] [Indexed: 06/24/2023]
Abstract
Since the design of metal complexes with better biological activities is important, herein a new palladium(II) complex bearing en and acac (en and acac stand for ethylenediamine and acetylacetonato, respectively) as its ligands, [Pd(en)(acac)]NO3 complex, was synthesized and fully characterized. Quantum chemical computations of the palladium(II) complex were done via DFT/B3LYP method. Cytotoxicity activity of the new compound on leukemia cell line (K562) was assessed via MTT method. The findings indicated that the metal complex has remarkable cytotoxic effect than cisplatin. OSIRIS DataWarrior software was employed to calculate in-silico physicochemical and toxicity parameters of the synthesized complex which rendered significant results. To comprehend the interaction type of new metal compound with macromolecules, the in depth investigation of interaction of mentioned complex with CT-DNA and BSA was accomplished by fluorescence, UV-Visible absorption spectroscopy, viscosity measurement, gel electrophoresis, FRET analysis and circular dichroism (CD) spectroscopy. On the other hand, computational molecular docking was carried out and the obtained data demonstrated that H-bond and van der Waals forces are the dominant forces for the binding of the compound to the mentioned biomolecules. Molecular dynamics simulation was also done and confirmed the stability of best docked pose of palladium(II) complex inside DNA or BSA over the time and in presence of water solvent. Also, Our own N-layered Integrated molecular Orbital and molecular Mechanics (ONIOM) methodology based on the hybridization of quantum mechanics and molecular mechanics (QM/MM) methodology was accomplished to inquire about binding of Pd(II) complex with DNA or BSA.HIGHLIGHTSNew biologically active Pd(II) complex was synthesized and characterized.The in silico studies of the designed complex and its ligands were accomplished by OSIRIS DataWarrior softwareInteraction with CT-DNA and BSA was assessed by various spectroscopic methods.Molecular docking simulation supported the interaction with both macromolecules.Based on ONIOM analysis, the structures of the complex and biomolecules are altered after binding. Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
| | - Effat Dehghanian
- Department of Chemistry, University of Sistan and Baluchestan, Zahedan, Iran
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Jayasri B, Rajeshwari K, Vasantha P, Anantha Lakshmi PV. Ternary Cobalt (II)-Metformin-Glycine/Histidine/Proline Complexes: Multispectroscopic DNA, HSA, and BSA Interaction and Cytotoxicity Studies. Biol Trace Elem Res 2023; 201:5481-5499. [PMID: 36856949 DOI: 10.1007/s12011-023-03606-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 02/21/2023] [Indexed: 03/02/2023]
Abstract
The synthesized water-soluble ternary complexes [Co(met)(gly)(Cl)2] (1), [Co(met)(hist)(Cl)2] (2), and [Co(met)(pro)(Cl)2] (3), (met = metformin, gly = glycine, hist = histidine, and pro = proline) were evaluated using spectro-analytical techniques, and the stereochemistry of the complexes was determined to be octahedral. UV-Vis absorption, competitive DNA-binding experiments using ethidium bromide (EB) by fluorescence, fluorescence emission studies, viscosity studies, and gel electrophoresis techniques were all employed to explore the binding characteristics of the cobalt (II) complexes with CT-DNA and groove-binding mechanism established. The salt-dependent association of the complexes to CT-DNA was investigated using UV-Vis spectrophotometric analysis. The association of the cobalt (II) complexes with BSA and HSA was explored by utilizing UV-Vis absorption and fluorescence spectroscopy approaches. The findings show that the complexes exhibit adequate capacity to quench BSA and HSA fluorescence and that the binding response is mostly a static quenching mechanism. The cytotoxicity of the complexes has also been appraised with the human breast adenocarcinoma cell lines (MCF-7) and (MDA-MB-231) by utilizing the MTT assay. For each cell line, the IC50 values were computed. In both cell lines, all the complexes were active.
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Affiliation(s)
- B Jayasri
- Department of Chemistry, University College of Science, Osmania University, Hyderabad, India, 500007
| | - K Rajeshwari
- Department of Chemistry, University College of Science, Osmania University, Hyderabad, India, 500007
| | - P Vasantha
- Department of Chemistry, University College of Science, Osmania University, Hyderabad, India, 500007
| | - P V Anantha Lakshmi
- Department of Chemistry, University College of Science, Osmania University, Hyderabad, India, 500007.
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Rajeshwari K, Vasantha P, Kumar BS, Lakshmi PVA. Nickel-Metformin Ternary Complexes: Geometrical, Thermal, DNA Binding, and Molecular Docking Studies. Biol Trace Elem Res 2022; 200:5351-5364. [PMID: 34993912 DOI: 10.1007/s12011-022-03100-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Accepted: 01/02/2022] [Indexed: 11/30/2022]
Abstract
Novel three nickel(II) complexes of type [Ni(metf)(o-phen)2]Cl2 (1), [Ni(metf)(opda)2]Cl2 (2), [Ni(metf)(2-2'bipy)2]Cl2 (3), (Metf = metformin, o-phen = ortho-phenanthroline, opda = ortho-phenylenediamine, 2-2' bipy = 2-2' bipyridyl) were synthesized and characterized by various analytical and spectral techniques. Based on these studies, octahedral geometry is assigned to these complexes. The DNA binding properties of these complexes were investigated by absorption, emission, and viscosity studies. From the spectral data, it was concluded that the complexes bind to DNA through groove mode of binding. The intrinsic binding constants (Kb) from absorption spectroscopy were 1.60 × 104, 3.57 × 104, and 5.70 × 104 M-1 for 1, 2, and 3, respectively, and Stern-Volmer quenching constants (Ksv) from emission spectroscopy were 0.11, 0.87, and 0.24, respectively. Thermal degradation pattern of the compounds was studied and Coats-Redfern method is used to determine kinetic parameters for complexes 1, 2, and 3 from thermal studies. The software Discovery Studio 2.1 was used to assess the binding affinity and interaction pattern of complexes with the B-DNA receptor protein and complex 1 has the highest dock score.
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Affiliation(s)
- K Rajeshwari
- Department of Chemistry, Osmania University, Tarnaka, Hyderabad, Telangana State, 500007, India
- Department of Chemistry, University College for Women, Osmania University, Koti, Hyderabad, Telangana State, 500095, India
| | - P Vasantha
- Department of Chemistry, Osmania University, Tarnaka, Hyderabad, Telangana State, 500007, India
| | - B Sathish Kumar
- Department of Chemistry, Osmania University, Tarnaka, Hyderabad, Telangana State, 500007, India
| | - P V Anantha Lakshmi
- Department of Chemistry, Osmania University, Tarnaka, Hyderabad, Telangana State, 500007, India.
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Rusanov DA, Zou J, Babak MV. Biological Properties of Transition Metal Complexes with Metformin and Its Analogues. Pharmaceuticals (Basel) 2022; 15:ph15040453. [PMID: 35455450 PMCID: PMC9031419 DOI: 10.3390/ph15040453] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 03/29/2022] [Accepted: 04/01/2022] [Indexed: 12/12/2022] Open
Abstract
Metformin is a widely prescribed medication for the treatment and management of type 2 diabetes. It belongs to a class of biguanides, which are characterized by a wide range of diverse biological properties, including anticancer, antimicrobial, antimalarial, cardioprotective and other activities. It is known that biguanides serve as excellent N-donor bidentate ligands and readily form complexes with virtually all transition metals. Recent evidence suggests that the mechanism of action of metformin and its analogues is linked to their metal-binding properties. These findings prompted us to summarize the existing data on the synthetic strategies and biological properties of various metal complexes with metformin and its analogues. We demonstrated that coordination of biologically active biguanides to various metal centers often resulted in an improved pharmacological profile, including reduced drug resistance as well as a wider spectrum of activity. In addition, coordination to the redox-active metal centers, such as Au(III), allowed for various activatable strategies, leading to the selective activation of the prodrugs and reduced off-target toxicity.
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Affiliation(s)
- Daniil A. Rusanov
- Drug Discovery Lab, Department of Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong SAR 999077, China; (D.A.R.); (J.Z.)
- Laboratory of Medicinal Chemistry, N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Avenue 47, 119991 Moscow, Russia
| | - Jiaying Zou
- Drug Discovery Lab, Department of Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong SAR 999077, China; (D.A.R.); (J.Z.)
- Department of Biochemical Engineering, University College London, Bernard Katz Building, Gower Street, London WC1E 6BT, UK
| | - Maria V. Babak
- Drug Discovery Lab, Department of Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong SAR 999077, China; (D.A.R.); (J.Z.)
- Correspondence:
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Shekhar B, Rajeshwari K, Jayasree B, Anantha Lakshmi PV. Novel Metformin complexes: Geometry Optimization, Non‐isothermal Kinetic Parameters, DNA binding, on‐off light switching and Docking studies. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6601] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- B. Shekhar
- Department of Chemistry University College of Science, Osmania University, Tarnaka Hyderabad Telangana State India
- Department of Chemistry Malla Reddy Engineering College (Autonomous), Maisammaguda Hyderabad
| | - K. Rajeshwari
- Department of Chemistry University College of Science, Osmania University, Tarnaka Hyderabad Telangana State India
| | - B. Jayasree
- Department of Chemistry University College of Science, Osmania University, Tarnaka Hyderabad Telangana State India
| | - P. V. Anantha Lakshmi
- Department of Chemistry University College of Science, Osmania University, Tarnaka Hyderabad Telangana State India
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Rajeshwari K, Anantha Lakshmi P, Archana J, Sumakanth M. Ternary Cobalt(II), Nickel(II), and Copper(II) complexes containing metformin and ethylenediamine: Synthesis, characterization, thermal, in vitro DNA binding, in silico molecular docking, and in vivo antihyperglycemic studies. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.6100] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- K. Rajeshwari
- Department of Chemistry Osmania University Hyderabad India
- Department of Chemistry University College for Women, Osmania University Hyderabad India
| | | | - J. Archana
- Department of Pharmacy RBVRR Women's College of Pharmacy Hyderabad India
| | - M. Sumakanth
- Department of Pharmacy RBVRR Women's College of Pharmacy Hyderabad India
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