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Quraishi S, Saha D, Kumari K, Jha AN, Roy AS. Non-covalent binding interaction of bioactive coumarin esculetin with calf thymus DNA and yeast transfer RNA: A detailed investigation to decipher the binding affinities, binding location, interacting forces and structural alterations at a molecular level. Int J Biol Macromol 2024; 257:128568. [PMID: 38061533 DOI: 10.1016/j.ijbiomac.2023.128568] [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: 11/07/2023] [Revised: 11/28/2023] [Accepted: 11/30/2023] [Indexed: 01/26/2024]
Abstract
Esculetin is a well-known coumarin derivative found abundantly in nature possessing an extensive array of pharmacological and therapeutic properties. Consequently, to comprehend its molecular recognition mechanism, our objective is to conduct a complete investigation of its interactions with the nucleic acid, specifically ct-DNA, and t-RNA, using spectroscopic and computational techniques. The intrinsic fluorescence of esculetin is quenched when it interacts with ct-DNA and t-RNA, and this occurs through a static quenching mechanism. The thermodynamic parameters demonstrated that the interaction is influenced by hydrogen bonding and weak van der Waals forces. CD and FT-IR results revealed no conformational changes in ct-DNA and t-RNA structure on binding with esculetin. Furthermore, competitive displacement assay with ethidium bromide, melting temperature, viscosity measurement, and potassium iodide quenching experiments, reflected that esculetin probably binds to the minor groove of ct-DNA. The molecular docking results provided further confirmation for the spectroscopic findings, including the binding location of esculetin and binding energies of esculetin complexes with ct-DNA and t-RNA. Molecular dynamics simulation studies demonstrated the conformational stability and flexibility of nucleic acids.
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Affiliation(s)
- Sana Quraishi
- Department of Chemistry, National Institute of Technology Meghalaya, Shillong 793003, India
| | - Debanjan Saha
- Department of Molecular Biology and Biotechnology, Tezpur University, Tezpur 784028, India
| | - Kalpana Kumari
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Anupam Nath Jha
- Department of Molecular Biology and Biotechnology, Tezpur University, Tezpur 784028, India.
| | - Atanu Singha Roy
- Department of Chemistry, National Institute of Technology Meghalaya, Shillong 793003, India.
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Shaldam M, Tawfik H, Elmansi H, Belal F, Yamaguchi K, Sugiura M, Magdy G. Synthesis, crystallographic, DNA binding, and molecular docking/dynamic studies of a privileged chalcone-sulfonamide hybrid scaffold as a promising anticancer agent. J Biomol Struct Dyn 2023; 41:8876-8890. [PMID: 36310097 DOI: 10.1080/07391102.2022.2138551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 10/15/2022] [Indexed: 10/31/2022]
Abstract
In the present study, a drug-like molecular hybrid structure between chalcone and sulfonamide moieties was synthesized and characterized. The structural peculiarities of the synthesized hybrid were further verified by means of single crystal X-ray crystallography. Furthermore, its biological activity as an anticancer agent was evaluated. The synthesized model of chalcone-sulfonamide hybrid 3 was found to have potent anticancer properties against the studied cancer cell lines. Hence, the in vitro binding interaction of hybrid 3 with Calf thymus DNA (CT-DNA) was studied at a simulated physiological pH to confirm its anticancer activity for the first time. This was investigated by applying different spectroscopic techniques, ionic strength measurements, viscosity measurements, thermodynamics, molecular dynamic simulation and molecular docking studies. The obtained results showed a clear binding interaction between hybrid 3 and CT-DNA with a moderate affinity via a minor groove binding mechanism. The binding constant (Kb) at 298 K calculated from the Benesi-Hildebrand equation was found to be 3.49 × 104 M-1. The entropy and enthalpy changes (ΔS0 and ΔH0) were 204.65 J mol-1 K-1 and 35.08 KJ mol-1, respectively, indicating that hydrophobic interactions constituted the major binding forces. The results obtained from molecular docking and dynamic simulation studies confirmed the minor groove binding interaction and the stability of the formed complex. This study can contribute to further understanding of the molecular mechanism of hybrid 3 as a potential antitumor agent and can also guide future clinical and pharmacological studies for rational drug design with enhanced or more selective activity and greater efficacy.[Figure: see text]Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Moataz Shaldam
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Kafrelsheikh University, Kafrelsheikh, Egypt
| | - Haytham Tawfik
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Tanta University, Tanta, Egypt
| | - Heba Elmansi
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - Fathalla Belal
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - Koki Yamaguchi
- Faculty of Pharmaceutical Sciences, Sojo University, Kumamoto, Japan
| | - Masaharu Sugiura
- Faculty of Pharmaceutical Sciences, Sojo University, Kumamoto, Japan
| | - Galal Magdy
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Kafrelsheikh University, Kafrelsheikh, Egypt
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3
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Ma J, Huang G, Mo C, Li J, Yan L, Zhang Q. Insights into the intercalative binding of benzo[b]fluoranthene with herring sperm DNA in vitro and its application. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
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4
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Lei Y, Zhang Z, Ma X, Cai R, Dai L, Guo Y, Tuo X. Deciphering the interaction of perampanel and calf thymus DNA: A multi-spectroscopic and computer modelling study. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Tessaro PS, do Nascimento Tomaz M, Farias G, de Paula CP, Rocha MC, Malavazi I, Cunha A, Pimenta BF, Terenzi HF, Mendes SR, Gariani RA, Xavier FR. Enhancing the biological properties of zinc complexes with bis(indolyl)methane groups: Synthesis, characterization, DNA interaction, and biocide activity. J Inorg Biochem 2022; 236:111973. [PMID: 36027843 DOI: 10.1016/j.jinorgbio.2022.111973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 08/08/2022] [Accepted: 08/15/2022] [Indexed: 12/15/2022]
Abstract
The unprecedented mononucleated ligand (6,6-di(1H-indol-3-yl)-N,N-bis(pyridin-2-ylmethyl)hexan-1-amine (LC5) with an N3-donor set and its complexes [Zn(LC5)Cl2] • 2CH3OH (1) and [Zn(LC5)2](ClO4)2 (2), were successfully prepared. All compounds were fully characterized by a suite of physicochemical methods. Fluid 1H and 13C NMR spectroscopy, as well as DFT and TD-DFT calculations, were carried out to propose a viable structural arrangement for both complexes. The interaction between these compounds and DNA was monitored in the UV region where binding constants (Kb) were estimated (2 > 1 > LC5). These data were corroborated by DNA cleavage assays using groove binders, circular dichroism, and docking studies. Both complexes confirmed their biocide activity against selected microorganisms: Gram-positive (S. aureus) and Gram-negative (E. coli) bacteria, the filamentous fungi A. fumigatus and S. cerevisiae. Finally, the cytotoxic activities of 1 and 2 were tested against the erythroleukemia K562 cell line. For all biological studies, it was probed that the presence of the indole moieties and the zinc atoms in the chemical composition of the complexes studied could increase the magnitude of the activity following the order: 2 > 1 > LC5, where a linear relationship between the biological activity upon K562 cells (IC50) and DNA binding studies (Kb) was found.
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Affiliation(s)
- Patrícia S Tessaro
- Laboratório Síntese e Catálise - SINCA, Universidade do Estado de Santa Catarina, Joinville CEP 89219-710, SC, Brazil; Departamento de Química, Universidade Federal de Minas Gerais, Belo Horizonte CEP 31270-901, MG, Brazil
| | - Michele do Nascimento Tomaz
- Laboratório Síntese e Catálise - SINCA, Universidade do Estado de Santa Catarina, Joinville CEP 89219-710, SC, Brazil; Dipartimento di Scienze Chimiche, Università Degli Studi di Padova, Padova 35131, Italy
| | - Giliandro Farias
- Laboratório de Bioinorgânica e Cristalografia - LABINC, Universidade Federal de Santa Catarina, Florianópolis CEP 88040-900, SC, Brazil
| | - Carla P de Paula
- Departamento de Genética e Evolução, Universidade Federal de São Carlos, São Carlos CEP 13565-905, SP, Brazil
| | - Marina C Rocha
- Departamento de Genética e Evolução, Universidade Federal de São Carlos, São Carlos CEP 13565-905, SP, Brazil; Koret School of Veterinary Medicine, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 76100, Israel
| | - Iran Malavazi
- Departamento de Genética e Evolução, Universidade Federal de São Carlos, São Carlos CEP 13565-905, SP, Brazil
| | - Anderson Cunha
- Departamento de Genética e Evolução, Universidade Federal de São Carlos, São Carlos CEP 13565-905, SP, Brazil
| | - Beatriz F Pimenta
- Laboratório de Biologia Molecular Estrutural, Departamento de Bioquímica, Universidade Federal de Santa Catarina, Florianópolis CEP 88040-900, SC, Brazil
| | - Hernan F Terenzi
- Laboratório de Biologia Molecular Estrutural, Departamento de Bioquímica, Universidade Federal de Santa Catarina, Florianópolis CEP 88040-900, SC, Brazil
| | - Samuel R Mendes
- Laboratório Síntese e Catálise - SINCA, Universidade do Estado de Santa Catarina, Joinville CEP 89219-710, SC, Brazil
| | - Rogério A Gariani
- Laboratório Síntese e Catálise - SINCA, Universidade do Estado de Santa Catarina, Joinville CEP 89219-710, SC, Brazil
| | - Fernando R Xavier
- Laboratório Síntese e Catálise - SINCA, Universidade do Estado de Santa Catarina, Joinville CEP 89219-710, SC, Brazil.
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Multi-spectroscopic, thermodynamic, and molecular docking/dynamic approaches for characterization of the binding interaction between calf thymus DNA and palbociclib. Sci Rep 2022; 12:14723. [PMID: 36042232 PMCID: PMC9427788 DOI: 10.1038/s41598-022-19015-9] [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: 06/21/2022] [Accepted: 08/23/2022] [Indexed: 12/02/2022] Open
Abstract
Studying the binding interaction between biological macromolecules and small molecules has formed the core of different research aspects. The interaction of palbociclib with calf thymus DNA at simulated physiological conditions (pH 7.4) was studied using different approaches, including spectrophotometry, spectrofluorimetry, FT-IR spectroscopy, viscosity measurements, ionic strength measurements, thermodynamic, molecular dynamic simulation, and docking studies. The obtained findings showed an apparent binding interaction between palbociclib and calf thymus DNA. Groove binding mode was confirmed from the findings of competitive binding studies with ethidium bromide or rhodamine B, UV–Vis spectrophotometry, and viscosity assessment. The binding constant (Kb) at 298 K calculated from the Benesi–Hildebrand equation was found to be 6.42 × 103 M−1. The enthalpy and entropy changes (∆H0 and ∆S0) were − 33.09 kJ mol−1 and 61.78 J mol−1 K−1, respectively, showing that hydrophobic and hydrogen bonds constitute the primary binding forces. As indicated by the molecular docking results, palbociclib fits into the AT-rich region of the B-DNA minor groove with four base pairs long binding site. The dynamic performance and stability of the formed complex were also evaluated using molecular dynamic simulation studies. The in vitro study of the intermolecular binding interaction of palbociclib with calf thymus DNA could guide future clinical and pharmacological studies for the rational drug scheming with enhanced or more selective activity and greater efficacy.
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