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Miranda TG, Ciribelli NN, Bihain MFR, Santos Pereira AKD, Cavallini GS, Pereira DH. Interactions between DNA and the acridine intercalator: A computational study. Comput Biol Chem 2024; 109:108029. [PMID: 38387123 DOI: 10.1016/j.compbiolchem.2024.108029] [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: 12/15/2023] [Revised: 02/08/2024] [Accepted: 02/08/2024] [Indexed: 02/24/2024]
Abstract
Cancer is a global public health problem characterized by deviations in the mechanisms that control cell proliferation, resulting in mutations and variations in the structure of DNA. The mechanisms of action of chemotherapeutic drugs are related to their interactions and binding with DNA; consequently, the development of antineoplastic agents that target DNA has extensively focused on use of acridine, a heterocyclic molecule that binds to deoxyribonucleic acid via intercalation, a process that modifies DNA and makes replication impossible. In this context, this study aimed to computationally investigate how acridine intercalators interact with DNA by evaluating the mechanism of interactions, binding, and interaction energies using quantum mechanics calculations. Molecular electrostatic potential (MEP) analysis revealed that acridine has well- distributed negative charges in the center of the molecule, indicative of a dominant electron-rich region. Acridine exhibits well-defined π orbitals (HOMO and LUMO) on the aromatic rings, suggesting that charge transfer occurs within the molecule and may be responsible for the pharmacological activity of the compound. Structural analysis revealed that acridine interacts with DNA mainly through hydrogen bonds between HAcridine… ODNA with bond lengths ranging from 2.370 Å to 3.472 Å. The Binding energy (ΔEBind) showed that acridine interacts with DNA effectively for all complexes and the electronic energy results (E+ZPE) for complexes revealed that the complexes are more stable when the DNA-centered acridine molecule. The Laplacian-analysis topological QTAIM parameter (∇2ρ(r)) and total energy (H(r)) categorized the interactions as being non-covalent in nature. The RGD peak distribution in the NCI analysis reveals the presence of van der Waals interactions, predominantly between the intercalator and DNA. Accordingly, we confirm that acridine/DNA interactions are relevant for understanding how the intercalator acts within nucleic acids.
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Affiliation(s)
- Thaynara Guimarães Miranda
- Programa de Pós Graduação em Biotecnologia, Universidade Federal do Tocantins (UFT), Gurupi, Tocantins CEP 77.402-970, Brazil
| | - Nicolas Nascimento Ciribelli
- Programa de Pós Graduação em Biotecnologia, Universidade Federal do Tocantins (UFT), Gurupi, Tocantins CEP 77.402-970, Brazil
| | | | - Anna Karla Dos Santos Pereira
- Programa de Pós Graduação em Química, Universidade Federal do Tocantins (UFT), Gurupi, Tocantins CEP 77.402-970, Brazil
| | - Grasiele Soares Cavallini
- Programa de Pós Graduação em Química, Universidade Federal do Tocantins (UFT), Gurupi, Tocantins CEP 77.402-970, Brazil
| | - Douglas Henrique Pereira
- Programa de Pós Graduação em Biotecnologia, Universidade Federal do Tocantins (UFT), Gurupi, Tocantins CEP 77.402-970, Brazil; Departamento de Química, Instituto Tecnológico de Aeronáutica (ITA), Praça Marechal Eduardo Gomes, 50, Vila das Acácias, São José dos Campos SP CEP 12228-900, Brazil.
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2
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Prieto Otoya TD, McQuaid KT, Hennessy J, Menounou G, Gibney A, Paterson NG, Cardin DJ, Kellett A, Cardin CJ. Probing a Major DNA Weakness: Resolving the Groove and Sequence Selectivity of the Diimine Complex Λ-[Ru(phen) 2 phi] 2. Angew Chem Int Ed Engl 2024; 63:e202318863. [PMID: 38271265 DOI: 10.1002/anie.202318863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 01/19/2024] [Accepted: 01/22/2024] [Indexed: 01/27/2024]
Abstract
The grooves of DNA provide recognition sites for many nucleic acid binding proteins and anticancer drugs such as the covalently binding cisplatin. Here we report a crystal structure showing, for the first time, groove selectivity by an intercalating ruthenium complex. The complex Λ-[Ru(phen)2 phi]2+ , where phi=9,10-phenanthrenediimine, is bound to the DNA decamer duplex d(CCGGTACCGG)2 . The structure shows that the metal complex is symmetrically bound in the major groove at the central TA/TA step, and asymmetrically bound in the minor groove at the adjacent GG/CC steps. A third type of binding links the strands, in which each terminal cytosine base stacks with one phen ligand. The overall binding stoichiometry is four Ru complexes per duplex. Complementary biophysical measurements confirm the binding preference for the Λ-enantiomer and show a high affinity for TA/TA steps and, more generally, TA-rich sequences. A striking enantiospecific elevation of melting temperatures is found for oligonucleotides which include the TATA box sequence.
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Affiliation(s)
| | - Kane T McQuaid
- Department of Chemistry, University of Reading, Whiteknights, Reading, RG6 6AD, UK
| | - Joseph Hennessy
- SSPC, the Science Foundation Ireland Research Centre for Pharmaceuticals, School of Chemical Sciences, Dublin City University, Glasnevin, Dublin, 9, Ireland Email
| | - Georgia Menounou
- SSPC, the Science Foundation Ireland Research Centre for Pharmaceuticals, School of Chemical Sciences, Dublin City University, Glasnevin, Dublin, 9, Ireland Email
| | - Alex Gibney
- SSPC, the Science Foundation Ireland Research Centre for Pharmaceuticals, School of Chemical Sciences, Dublin City University, Glasnevin, Dublin, 9, Ireland Email
| | - Neil G Paterson
- Diamond Light Source Ltd., Harwell Science and Innovation Campus, Didcot, Oxfordshire, OX11 0DE, UK
| | - David J Cardin
- Department of Chemistry, University of Reading, Whiteknights, Reading, RG6 6AD, UK
| | - Andrew Kellett
- SSPC, the Science Foundation Ireland Research Centre for Pharmaceuticals, School of Chemical Sciences, Dublin City University, Glasnevin, Dublin, 9, Ireland Email
| | - Christine J Cardin
- Department of Chemistry, University of Reading, Whiteknights, Reading, RG6 6AD, UK
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Wang Y, Chen Y, Zhang J, Yang Y, Fleishman JS, Wang Y, Wang J, Chen J, Li Y, Wang H. Cuproptosis: A novel therapeutic target for overcoming cancer drug resistance. Drug Resist Updat 2024; 72:101018. [PMID: 37979442 DOI: 10.1016/j.drup.2023.101018] [Citation(s) in RCA: 20] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 11/06/2023] [Accepted: 11/08/2023] [Indexed: 11/20/2023]
Abstract
Cuproptosis is a newly identified form of cell death driven by copper. Recently, the role of copper and copper triggered cell death in the pathogenesis of cancers have attracted attentions. Cuproptosis has garnered enormous interest in cancer research communities because of its great potential for cancer therapy. Copper-based treatment exerts an inhibiting role in tumor growth and may open the door for the treatment of chemotherapy-insensitive tumors. In this review, we provide a critical analysis on copper homeostasis and the role of copper dysregulation in the development and progression of cancers. Then the core molecular mechanisms of cuproptosis and its role in cancer is discussed, followed by summarizing the current understanding of copper-based agents (copper chelators, copper ionophores, and copper complexes-based dynamic therapy) for cancer treatment. Additionally, we summarize the emerging data on copper complexes-based agents and copper ionophores to subdue tumor chemotherapy resistance in different types of cancers. We also review the small-molecule compounds and nanoparticles (NPs) that may kill cancer cells by inducing cuproptosis, which will shed new light on the development of anticancer drugs through inducing cuproptosis in the future. Finally, the important concepts and pressing questions of cuproptosis in future research that should be focused on were discussed. This review article suggests that targeting cuproptosis could be a novel antitumor therapy and treatment strategy to overcome cancer drug resistance.
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Affiliation(s)
- Yumin Wang
- Department of Respiratory and Critical Care Medicine, Aerospace Center Hospital, Peking University Aerospace School of Clinical Medicine, Beijing 100049, PR China.
| | - Yongming Chen
- State Key Laboratory of Oncology in South China, Sun Yat-Sen University Cancer Center, Guangzhou, PR China
| | - Junjing Zhang
- Department of Hepato-Biliary Surgery, Department of Surgery, Huhhot First Hospital, Huhhot 010030, PR China
| | - Yihui Yang
- Beijing Key Laboratory of Drug Target and Screening Research, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, PR China
| | - Joshua S Fleishman
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, NY 11439, USA
| | - Yan Wang
- Hunan Provincial Key Laboratory of Hepatobiliary Disease Research & Division of Hepato-Biliary-Pancreatic Surgery, Department of Surgery, The Second Xiangya Hospital of Central South University, Changsha 410011, PR China
| | - Jinhua Wang
- Beijing Key Laboratory of Drug Target and Screening Research, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, PR China
| | - Jichao Chen
- Department of Respiratory and Critical Care Medicine, Aerospace Center Hospital, Peking University Aerospace School of Clinical Medicine, Beijing 100049, PR China
| | - Yuanfang Li
- State Key Laboratory of Oncology in South China, Sun Yat-Sen University Cancer Center, Guangzhou, PR China.
| | - Hongquan Wang
- Department of Neurology, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, PR China.
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Alcalde-Ordóñez A, Barreiro-Piñeiro N, McGorman B, Gómez-González J, Bouzada D, Rivadulla F, Vázquez ME, Kellett A, Martínez-Costas J, López MV. A copper(ii) peptide helicate selectively cleaves DNA replication foci in mammalian cells. Chem Sci 2023; 14:14082-14091. [PMID: 38098723 PMCID: PMC10718067 DOI: 10.1039/d3sc03303a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Accepted: 10/25/2023] [Indexed: 12/17/2023] Open
Abstract
The use of copper-based artificial nucleases as potential anticancer agents has been hampered by their poor selectivity in the oxidative DNA cleavage process. An alternative strategy to solve this problem is to design systems capable of selectively damaging noncanonical DNA structures that play crucial roles in the cell cycle. We designed an oligocationic CuII peptide helicate that selectively binds and cleaves DNA three-way junctions (3WJs) and induces oxidative DNA damage via a ROS-mediated pathway both in vitro and in cellulo, specifically at DNA replication foci of the cell nucleus, where this DNA structure is transiently generated. To our knowledge, this is the first example of a targeted chemical nuclease that can discriminate with high selectivity 3WJs from other forms of DNA both in vitro and in mammalian cells. Since the DNA replication process is deregulated in cancer cells, this approach may pave the way for the development of a new class of anticancer agents based on copper-based artificial nucleases.
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Affiliation(s)
- Ana Alcalde-Ordóñez
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela 15782 Santiago de Compostela Spain
| | - Natalia Barreiro-Piñeiro
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS), Departamento de Bioquímica e Bioloxía Molecular, Universidade de Santiago de Compostela 15782 Santiago de Compostela Spain
| | - Bríonna McGorman
- SSPC, The SFI Research Centre for Pharmaceuticals, School of Chemical Sciences, Dublin City University Glasnevin Dublin 9 Ireland
| | - Jacobo Gómez-González
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela 15782 Santiago de Compostela Spain
| | - David Bouzada
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela 15782 Santiago de Compostela Spain
| | - Francisco Rivadulla
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS), Departamento de Química Física, Universidade de Santiago de Compostela 15782 Santiago de Compostela Spain
| | - M Eugenio Vázquez
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela 15782 Santiago de Compostela Spain
| | - Andrew Kellett
- SSPC, The SFI Research Centre for Pharmaceuticals, School of Chemical Sciences, Dublin City University Glasnevin Dublin 9 Ireland
| | - José Martínez-Costas
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS), Departamento de Bioquímica e Bioloxía Molecular, Universidade de Santiago de Compostela 15782 Santiago de Compostela Spain
| | - Miguel Vázquez López
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS), Departamento de Química Inorgánica, Universidade de Santiago de Compostela 15782 Santiago de Compostela Spain
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Gibney A, de Paiva REF, Singh V, Fox R, Thompson D, Hennessy J, Slator C, McKenzie CJ, Johansson P, McKee V, Westerlund F, Kellett A. A Click Chemistry-Based Artificial Metallo-Nuclease. Angew Chem Int Ed Engl 2023; 62:e202305759. [PMID: 37338105 DOI: 10.1002/anie.202305759] [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: 04/25/2023] [Revised: 06/14/2023] [Accepted: 06/19/2023] [Indexed: 06/21/2023]
Abstract
Artificial metallo-nucleases (AMNs) are promising DNA damaging drug candidates. Here, we demonstrate how the 1,2,3-triazole linker produced by the Cu-catalysed azide-alkyne cycloaddition (CuAAC) reaction can be directed to build Cu-binding AMN scaffolds. We selected biologically inert reaction partners tris(azidomethyl)mesitylene and ethynyl-thiophene to develop TC-Thio, a bioactive C3 -symmetric ligand in which three thiophene-triazole moieties are positioned around a central mesitylene core. The ligand was characterised by X-ray crystallography and forms multinuclear CuII and CuI complexes identified by mass spectrometry and rationalised by density functional theory (DFT). Upon Cu coordination, CuII -TC-Thio becomes a potent DNA binding and cleaving agent. Mechanistic studies reveal DNA recognition occurs exclusively at the minor groove with subsequent oxidative damage promoted through a superoxide- and peroxide-dependent pathway. Single molecule imaging of DNA isolated from peripheral blood mononuclear cells shows that the complex has comparable activity to the clinical drug temozolomide, causing DNA damage that is recognised by a combination of base excision repair (BER) enzymes.
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Affiliation(s)
- Alex Gibney
- SSPC, the, Science Foundation Ireland Research Centre for Pharmaceuticals, School of Chemical Sciences, Dublin City University, Glasnevin, Dublin 9, Dublin, Ireland
| | - Raphael E F de Paiva
- SSPC, the, Science Foundation Ireland Research Centre for Pharmaceuticals, School of Chemical Sciences, Dublin City University, Glasnevin, Dublin 9, Dublin, Ireland
| | - Vandana Singh
- Department of Life Sciences, Chalmers University of Technology, Gothenburg, Sweden
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Robert Fox
- SSPC, the, Science Foundation Ireland Research Centre for Pharmaceuticals, School of Chemical Sciences, Dublin City University, Glasnevin, Dublin 9, Dublin, Ireland
| | - Damien Thompson
- SSPC, the, Science Foundation Ireland Research Centre for Pharmaceuticals, Department of Physics, University of Limerick, Ireland
| | - Joseph Hennessy
- SSPC, the, Science Foundation Ireland Research Centre for Pharmaceuticals, School of Chemical Sciences, Dublin City University, Glasnevin, Dublin 9, Dublin, Ireland
| | - Creina Slator
- SSPC, the, Science Foundation Ireland Research Centre for Pharmaceuticals, School of Chemical Sciences, Dublin City University, Glasnevin, Dublin 9, Dublin, Ireland
| | - Christine J McKenzie
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230, Odense M, Denmark
| | - Pegah Johansson
- Laboratory of Clinical Chemistry, Sahlgrenska University Hospital Gothenburg, Sweden
- Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy at University of Gothenburg, Sweden
| | - Vickie McKee
- SSPC, the, Science Foundation Ireland Research Centre for Pharmaceuticals, School of Chemical Sciences, Dublin City University, Glasnevin, Dublin 9, Dublin, Ireland
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230, Odense M, Denmark
| | - Fredrik Westerlund
- Department of Life Sciences, Chalmers University of Technology, Gothenburg, Sweden
| | - Andrew Kellett
- SSPC, the, Science Foundation Ireland Research Centre for Pharmaceuticals, School of Chemical Sciences, Dublin City University, Glasnevin, Dublin 9, Dublin, Ireland
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6
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de Souza ÍP, de Melo ACC, Rodrigues BL, Bortoluzzi A, Poole S, Molphy Z, McKee V, Kellett A, Fazzi RB, da Costa Ferreira AM, Pereira-Maia EC. Antitumor copper(II) complexes with hydroxyanthraquinones and N,N-heterocyclic ligands. J Inorg Biochem 2023; 241:112121. [PMID: 36696836 DOI: 10.1016/j.jinorgbio.2023.112121] [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: 09/02/2022] [Revised: 12/28/2022] [Accepted: 01/02/2023] [Indexed: 01/06/2023]
Abstract
Five ternary copper(II) complexes, [Cu2(phen)2(L1)(ClO4)2] (1), [Cu2(phen)2(L1)(DMSO)2](PF6)2 (2), [Cu2(bpy)2(L1)(ClO4)2(H2O)2] (3), [Cu2(dmp)2(L1)(ClO4)2(H2O)2] (4), and [Cu(phen)(L2)]2(ClO4)2 (5), in which phen = 1,10-phenanthroline, bpy = 2,2'-bipyridine, dmp = 2,9-dimethyl-1,10-phenanthroline, H2L1 = 1,4-dihydroxyanthracene-9,10-dione and HL2 = 1-hydroxyanthracene-9,10-dione, DMSO = dimethylsulfoxide, were synthesized and fully characterized. Complex 2 was obtained through the substitution of perchlorate for DMSO. When two hydroxyquinone groups are present, L1 makes a bridge between two Cu(II) ions, which also bind two nitrogens of the respective diimine ligand. The compounds bind to calf thymus DNA and oxidatively cleave pUC19 DNA according to the following order of activity 1 > 4-5 > 3. Furthermore, complexes 1, 3, 4 and 5 inhibit topoisomerase-I activity and the growth of myelogenous leukemia cells with the IC50 values of 1.13, 10.60, 0.078, and 1.84 μmol L-1, respectively. Complexes 1 and 4 are the most active in cancer cells and in DNA cleavage.
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Affiliation(s)
- Ívina P de Souza
- Departamento de Química, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, 31270-901 Belo Horizonte, MG, Brazil; Departamento de Química, Centro Federal de Educação Tecnológica de Minas Gerais, Avenida Amazonas, 5253, 30421-169 Belo Horizonte, MG, Brazil
| | - Ariane C C de Melo
- Departamento de Química, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, 31270-901 Belo Horizonte, MG, Brazil
| | - Bernardo L Rodrigues
- Departamento de Química, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, 31270-901 Belo Horizonte, MG, Brazil
| | - Adailton Bortoluzzi
- Laboratório de Bioinorgânica e Cristalografia, Universidade Federal de Santa Catarina, Florianópolis, SC 88040-900, Brazil
| | - Simon Poole
- SSPC, the SFI Research Centre for Pharmaceuticals, School of Chemical Science, Dublin City University, Dublin 9, Ireland
| | - Zara Molphy
- SSPC, the SFI Research Centre for Pharmaceuticals, School of Chemical Science, Dublin City University, Dublin 9, Ireland
| | - Vickie McKee
- SSPC, the SFI Research Centre for Pharmaceuticals, School of Chemical Science, Dublin City University, Dublin 9, Ireland; Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark
| | - Andrew Kellett
- SSPC, the SFI Research Centre for Pharmaceuticals, School of Chemical Science, Dublin City University, Dublin 9, Ireland
| | - Rodrigo B Fazzi
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, Avenida Prof. Lineu Prestes, 748, 05508-000 São Paulo, SP, Brazil
| | - Ana M da Costa Ferreira
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, Avenida Prof. Lineu Prestes, 748, 05508-000 São Paulo, SP, Brazil
| | - Elene C Pereira-Maia
- Departamento de Química, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, 31270-901 Belo Horizonte, MG, Brazil.
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7
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Laskowski T, Kosno M, Andrałojć W, Frackowiak JE, Borzyszkowska-Bukowska J, Szczeblewski P, Radoń N, Świerżewska M, Woźny A, Paluszkiewicz E, Mazerska Z. The interactions of monomeric acridines and unsymmetrical bisacridines (UAs) with DNA duplexes: an insight provided by NMR and MD studies. Sci Rep 2023; 13:3431. [PMID: 36859494 PMCID: PMC9977845 DOI: 10.1038/s41598-023-30587-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 02/27/2023] [Indexed: 03/03/2023] Open
Abstract
Members of a novel class of anticancer compounds, exhibiting high antitumor activity, i.e. the unsymmetrical bisacridines (UAs), consist of two heteroaromatic ring systems. One of the ring systems is an imidazoacridinone moiety, with the skeleton identical to the structural base of Symadex. The second one is a 1-nitroacridine moiety, hence it may be regarded as Nitracrine's structural basis. These monoacridine units are connected by an aminoalkyl linker, which vary in structure. In theory, these unsymmetrical dimers should act as double-stranded DNA (dsDNA) bis-intercalators, since the monomeric units constituting the UAs were previously reported to exhibit an intercalating mode of binding into dsDNA. On the contrary, our earlier, preliminary studies have suggested that specific and/or structurally well-defined binding of UAs into DNA duplexes might not be the case. In this contribution, we have revisited and carefully examined the dsDNA-binding properties of monoacridines C-1305, C-1311 (Symadex), C-283 (Ledakrin/Nitracrine) and C-1748, as well as bisacridines C-2028, C-2041, C-2045 and C-2053 using advanced NMR techniques, aided by molecular modelling calculations and the analysis of UV-VIS spectra, decomposed by chemometric techniques. These studies allowed us to explain, why the properties of UAs are not a simple sum of the features exhibited by the acridine monomers.
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Affiliation(s)
- Tomasz Laskowski
- Department of Pharmaceutical Technology and Biochemistry and BioTechMed Centre, Faculty of Chemistry, Gdańsk University of Technology, Gabriela Narutowicza Str. 11/12, 80-233, Gdańsk, Poland.
| | - Michał Kosno
- grid.6868.00000 0001 2187 838XDepartment of Pharmaceutical Technology and Biochemistry and BioTechMed Centre, Faculty of Chemistry, Gdańsk University of Technology, Gabriela Narutowicza Str. 11/12, 80-233 Gdańsk, Poland
| | - Witold Andrałojć
- grid.413454.30000 0001 1958 0162Institute of Bioorganic Chemistry, Polish Academy of Sciences, Zygmunta Noskowskiego Str. 12/14, 61-704 Poznań, Poland
| | - Joanna E. Frackowiak
- grid.6868.00000 0001 2187 838XDepartment of Pharmaceutical Technology and Biochemistry and BioTechMed Centre, Faculty of Chemistry, Gdańsk University of Technology, Gabriela Narutowicza Str. 11/12, 80-233 Gdańsk, Poland
| | - Julia Borzyszkowska-Bukowska
- grid.6868.00000 0001 2187 838XDepartment of Pharmaceutical Technology and Biochemistry and BioTechMed Centre, Faculty of Chemistry, Gdańsk University of Technology, Gabriela Narutowicza Str. 11/12, 80-233 Gdańsk, Poland
| | - Paweł Szczeblewski
- grid.6868.00000 0001 2187 838XDepartment of Pharmaceutical Technology and Biochemistry and BioTechMed Centre, Faculty of Chemistry, Gdańsk University of Technology, Gabriela Narutowicza Str. 11/12, 80-233 Gdańsk, Poland
| | - Nikola Radoń
- grid.6868.00000 0001 2187 838XDepartment of Pharmaceutical Technology and Biochemistry and BioTechMed Centre, Faculty of Chemistry, Gdańsk University of Technology, Gabriela Narutowicza Str. 11/12, 80-233 Gdańsk, Poland
| | - Maria Świerżewska
- grid.6868.00000 0001 2187 838XDepartment of Pharmaceutical Technology and Biochemistry and BioTechMed Centre, Faculty of Chemistry, Gdańsk University of Technology, Gabriela Narutowicza Str. 11/12, 80-233 Gdańsk, Poland
| | - Anna Woźny
- grid.6868.00000 0001 2187 838XFaculty of Applied Physics and Mathematics, Gdańsk University of Technology, Gabriela Narutowicza Str. 11/12, 80-233 Gdańsk, Poland
| | - Ewa Paluszkiewicz
- grid.6868.00000 0001 2187 838XDepartment of Pharmaceutical Technology and Biochemistry and BioTechMed Centre, Faculty of Chemistry, Gdańsk University of Technology, Gabriela Narutowicza Str. 11/12, 80-233 Gdańsk, Poland
| | - Zofia Mazerska
- grid.6868.00000 0001 2187 838XDepartment of Pharmaceutical Technology and Biochemistry and BioTechMed Centre, Faculty of Chemistry, Gdańsk University of Technology, Gabriela Narutowicza Str. 11/12, 80-233 Gdańsk, Poland
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8
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Bekkouche I, Shishonin AY, Vetcher AA. Recent Development in Biomedical Applications of Oligonucleotides with Triplex-Forming Ability. Polymers (Basel) 2023; 15:polym15040858. [PMID: 36850142 PMCID: PMC9964087 DOI: 10.3390/polym15040858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 01/31/2023] [Accepted: 02/02/2023] [Indexed: 02/12/2023] Open
Abstract
A DNA structure, known as triple-stranded DNA, is made up of three oligonucleotide chains that wind around one another to form a triple helix (TFO). Hoogsteen base pairing describes how triple-stranded DNA may be built at certain conditions by the attachment of the third strand to an RNA, PNA, or DNA, which might all be employed as oligonucleotide chains. In each of these situations, the oligonucleotides can be employed as an anchor, in conjunction with a specific bioactive chemical, or as a messenger that enables switching between transcription and replication through the triplex-forming zone. These data are also considered since various illnesses have been linked to the expansion of triplex-prone sequences. In light of metabolic acidosis and associated symptoms, some consideration is given to the impact of several low-molecular-weight compounds, including pH on triplex production in vivo. The review is focused on the development of biomedical oligonucleotides with triplexes.
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Affiliation(s)
- Incherah Bekkouche
- Nanotechnology Scientific and Educational Center, Institute of Biochemical Technology and Nanotechnology, Peoples’ Friendship University of Russia (RUDN), Miklukho-Maklaya Str. 6, Moscow 117198, Russia
| | - Alexander Y. Shishonin
- Complementary and Integrative Health Clinic of Dr. Shishonin, 5, Yasnogorskaya Str., Moscow 117588, Russia
| | - Alexandre A. Vetcher
- Nanotechnology Scientific and Educational Center, Institute of Biochemical Technology and Nanotechnology, Peoples’ Friendship University of Russia (RUDN), Miklukho-Maklaya Str. 6, Moscow 117198, Russia
- Complementary and Integrative Health Clinic of Dr. Shishonin, 5, Yasnogorskaya Str., Moscow 117588, Russia
- Correspondence:
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9
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Kim JH, Ofori S, Tagmount A, Vulpe CD, Awuah SG. Genome-wide CRISPR Screen Reveal Targets of Chiral Gold(I) Anticancer Compound in Mammalian Cells. ACS OMEGA 2022; 7:39197-39205. [PMID: 36340096 PMCID: PMC9631916 DOI: 10.1021/acsomega.2c05166] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 10/06/2022] [Indexed: 06/09/2023]
Abstract
Metal-based drugs, such as cisplatin and auranofin, are used for the treatment of cancer and rheumatoid arthritis, respectively. Auranofin and other gold-derived compounds have been shown to possess anticancer, anti-inflammatory, antimicrobial, and antiparasitic activity in preclinical and clinical trials. Unlike platinum agents which are known to target DNA, the target of gold is not well elucidated. To better understand the targets and effects of gold agents in mammalian cells, we used a targeted CRISPR (ToxCRISPR) screen in K562 cancer cells to identify genes that modulate cellular sensitivity to gold. We synthesized a novel chiral gold(I) compound, JHK-21, with potent anticancer activity. Among the most sensitizing hits were proteins involved in mitochondrial carriers, mitochondrial metabolism, and oxidative phosphorylation. Further analysis revealed that JHK-21 induced inner mitochondria membrane dysfunction and modulated ATP-binding cassette subfamily member C (ABCC1) function in a manner distinct from auranofin. Characterizing the therapeutic effects and toxicities of metallodrugs in mammalian cells is of growing interest to guide future drug discovery, and cellular and preclinical/clinical studies.
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Affiliation(s)
- Jong Hyun Kim
- Department
of Chemistry, University of Kentucky, Lexington, Kentucky 40506, United States
| | - Samuel Ofori
- Department
of Chemistry, University of Kentucky, Lexington, Kentucky 40506, United States
| | - Abderrahmane Tagmount
- Department
of Physiological Sciences, College of Veterinary Medicine, University of Florida, Gainesville, Florida 32611, United States
| | - Chris D. Vulpe
- Department
of Physiological Sciences, College of Veterinary Medicine, University of Florida, Gainesville, Florida 32611, United States
| | - Samuel G. Awuah
- Department
of Chemistry, University of Kentucky, Lexington, Kentucky 40506, United States
- Department
of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
- Markey
Cancer Center, University of Kentucky, Lexington, Kentucky 40536, United States
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10
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Olar R, Maxim C, Badea M, Bacalum M, Raileanu M, Avram S, Korošin NČ, Burlanescu T, Rostas AM. Antiproliferative Copper(II) Complexes Bearing Mixed Chelating Ligands: Structural Characterization, ROS Scavenging, In Silico Studies, and Anti-Melanoma Activity. Pharmaceutics 2022; 14:pharmaceutics14081692. [PMID: 36015318 PMCID: PMC9416163 DOI: 10.3390/pharmaceutics14081692] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 07/29/2022] [Accepted: 08/12/2022] [Indexed: 11/17/2022] Open
Abstract
Melanoma is a skin cancer characterized by rapid growth and spread for which current therapies produce both resistance and increased risk of infection. To develop new anti-melanoma biocompatible species, the series of complexes Cu(N-N)(bzac)(X)⋅nH2O (N-N: 1,10-phenanthroline/2,2′-bipyridine, Hbzac: 1-phenyl-1,3-butanedione, X: NO3/ClO4, and n = 0, 1) was studied. Single-crystal X-ray diffraction revealed a mononuclear structure for all complexes. The ability of the complexes to scavenge or trap reactive oxygen species such as O2⋅− and HO⋅ was proved by EPR spectroscopy experiments. All complexes inhibited B16 murine melanoma cells in a dose-dependent and nanomolar range, but the complexes with 1,10-phenanthroline were more active. Moreover, comparative activity on B16 and healthy BJ cells revealed a therapeutic index of 1.27–2.24. Bioinformatic methods were used to calculate the drug-likeness, pharmacokinetic, pharmacogenomic, and pharmacodynamic profiles of the compounds. The results showed that all compounds exhibit drug-likeness features, as well as promising absorption, distribution, metabolism, and excretion (ADME) properties, and no toxicity. The pharmacodynamics results showed that the neutral species appear to be good candidates for antitumor molecular targets (Tyrosyl-DNA phosphodiesterase 1, DNA-(apurinic or apyrimidinic site) lyase or Kruppel-like factor 5). Furthermore, the pharmacogenomic results showed a good affinity of the copper(II) complexes for the human cytochrome. These results recommend complexes bearing 1,10-phenanthroline as good candidates for developing drugs to melanoma alternative treatment.
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Affiliation(s)
- Rodica Olar
- Faculty of Chemistry, Department of Inorganic Chemistry, University of Bucharest, 90-92 Panduri Str., 050663 Bucharest, Romania
- Correspondence: (R.O.); (S.A.)
| | - Catalin Maxim
- Faculty of Chemistry, Department of Inorganic Chemistry, University of Bucharest, 90-92 Panduri Str., 050663 Bucharest, Romania
| | - Mihaela Badea
- Faculty of Chemistry, Department of Inorganic Chemistry, University of Bucharest, 90-92 Panduri Str., 050663 Bucharest, Romania
| | - Mihaela Bacalum
- Horia Hulubei National Institute for Physics and Nuclear Engineering, Department of Life and Environmental Physics, 30 Reactorului Str., 077125 Magurele-Ilfov, Romania
| | - Mina Raileanu
- Horia Hulubei National Institute for Physics and Nuclear Engineering, Department of Life and Environmental Physics, 30 Reactorului Str., 077125 Magurele-Ilfov, Romania
- Faculty of Physics, Department of Electricity, Solid State and Biophysics, University of Bucharest, 405A Atomiștilor Str., 077125 Magurele-Ilfov, Romania
| | - Speranta Avram
- Faculty of Biology, Department of Anatomy, Animal Physiology and Biophysics, University of Bucharest, 91-95, Splaiul Independenței, 050095 Bucharest, Romania
- Correspondence: (R.O.); (S.A.)
| | - Nataša Čelan Korošin
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, 1000 Ljubljana, Slovenia
| | - Teodora Burlanescu
- Laboratory of Optical Processes in Nanostructure Materials, National Institute of Materials Physics, 405A Atomiștilor Str., 077125 Magurele-Ilfov, Romania
| | - Arpad Mihai Rostas
- Laboratory of Atomic Structures and Defects in Advanced Materials, LASDAM, National Institute of Materials Physics, 405A Atomiștilor Str., 077125 Magurele-Ilfov, Romania
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11
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12
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Copper(II) and silver(I)-1,10-phenanthroline-5,6-dione complexes interact with double-stranded DNA: further evidence of their apparent multi-modal activity towards Pseudomonas aeruginosa. J Biol Inorg Chem 2022; 27:201-213. [PMID: 35006347 PMCID: PMC8840922 DOI: 10.1007/s00775-021-01922-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Accepted: 12/13/2021] [Indexed: 01/04/2023]
Abstract
Tackling microbial resistance requires continuous efforts for the development of new molecules with novel mechanisms of action and potent antimicrobial activity. Our group has previously identified metal-based compounds, [Ag(1,10-phenanthroline-5,6-dione)2]ClO4 (Ag-phendione) and [Cu(1,10-phenanthroline-5,6-dione)3](ClO4)2.4H2O (Cu-phendione), with efficient antimicrobial action against multidrug-resistant species. Herein, we investigated the ability of Ag-phendione and Cu-phendione to bind with double-stranded DNA using a combination of in silico and in vitro approaches. Molecular docking revealed that both phendione derivatives can interact with the DNA by hydrogen bonding, hydrophobic and electrostatic interactions. Cu-phendione exhibited the highest binding affinity to either major (− 7.9 kcal/mol) or minor (− 7.2 kcal/mol) DNA grooves. In vitro competitive quenching assays involving duplex DNA with Hoechst 33258 or ethidium bromide demonstrated that Ag-phendione and Cu-phendione preferentially bind DNA in the minor grooves. The competitive ethidium bromide displacement technique revealed Cu-phendione has a higher binding affinity to DNA (Kapp = 2.55 × 106 M−1) than Ag-phendione (Kapp = 2.79 × 105 M−1) and phendione (Kapp = 1.33 × 105 M−1). Cu-phendione induced topoisomerase I-mediated DNA relaxation of supercoiled plasmid DNA. Moreover, Cu-phendione was able to induce oxidative DNA injuries with the addition of free radical scavengers inhibiting DNA damage. Ag-phendione and Cu-phendione avidly displaced propidium iodide bound to DNA in permeabilized Pseudomonas aeruginosa cells in a dose-dependent manner as judged by flow cytometry. The treatment of P. aeruginosa with bactericidal concentrations of Cu-phendione (15 µM) induced DNA fragmentation as visualized by either agarose gel or TUNEL assays. Altogether, these results highlight a possible novel DNA-targeted mechanism by which phendione-containing complexes, in part, elicit toxicity toward the multidrug-resistant pathogen P. aeruginosa.
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13
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Tzani MA, Gioftsidou DK, Kallitsakis MG, Pliatsios NV, Kalogiouri NP, Angaridis PA, Lykakis IN, Terzidis MA. Direct and Indirect Chemiluminescence: Reactions, Mechanisms and Challenges. Molecules 2021; 26:7664. [PMID: 34946744 PMCID: PMC8705051 DOI: 10.3390/molecules26247664] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 12/12/2021] [Accepted: 12/14/2021] [Indexed: 11/29/2022] Open
Abstract
Emission of light by matter can occur through a variety of mechanisms. When it results from an electronically excited state of a species produced by a chemical reaction, it is called chemiluminescence (CL). The phenomenon can take place both in natural and artificial chemical systems and it has been utilized in a variety of applications. In this review, we aim to revisit some of the latest CL applications based on direct and indirect production modes. The characteristics of the chemical reactions and the underpinning CL mechanisms are thoroughly discussed in view of studies from the very recent bibliography. Different methodologies aiming at higher CL efficiencies are summarized and presented in detail, including CL type and scaffolds used in each study. The CL role in the development of efficient therapeutic platforms is also discussed in relation to the Reactive Oxygen Species (ROS) and singlet oxygen (1O2) produced, as final products. Moreover, recent research results from our team are included regarding the behavior of commonly used photosensitizers upon chemical activation under CL conditions. The CL prospects in imaging, biomimetic organic and radical chemistry, and therapeutics are critically presented in respect to the persisting challenges and limitations of the existing strategies to date.
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Affiliation(s)
- Marina A. Tzani
- Department of Chemistry, Aristotle University of Thessaloniki, University Campus, 54124 Thessaloniki, Greece; (M.A.Tz.); (D.K.G.); (M.G.K.); (N.V.P.); (N.P.K.); (P.A.A.)
| | - Dimitra K. Gioftsidou
- Department of Chemistry, Aristotle University of Thessaloniki, University Campus, 54124 Thessaloniki, Greece; (M.A.Tz.); (D.K.G.); (M.G.K.); (N.V.P.); (N.P.K.); (P.A.A.)
| | - Michael G. Kallitsakis
- Department of Chemistry, Aristotle University of Thessaloniki, University Campus, 54124 Thessaloniki, Greece; (M.A.Tz.); (D.K.G.); (M.G.K.); (N.V.P.); (N.P.K.); (P.A.A.)
| | - Nikolaos V. Pliatsios
- Department of Chemistry, Aristotle University of Thessaloniki, University Campus, 54124 Thessaloniki, Greece; (M.A.Tz.); (D.K.G.); (M.G.K.); (N.V.P.); (N.P.K.); (P.A.A.)
| | - Natasa P. Kalogiouri
- Department of Chemistry, Aristotle University of Thessaloniki, University Campus, 54124 Thessaloniki, Greece; (M.A.Tz.); (D.K.G.); (M.G.K.); (N.V.P.); (N.P.K.); (P.A.A.)
| | - Panagiotis A. Angaridis
- Department of Chemistry, Aristotle University of Thessaloniki, University Campus, 54124 Thessaloniki, Greece; (M.A.Tz.); (D.K.G.); (M.G.K.); (N.V.P.); (N.P.K.); (P.A.A.)
| | - Ioannis N. Lykakis
- Department of Chemistry, Aristotle University of Thessaloniki, University Campus, 54124 Thessaloniki, Greece; (M.A.Tz.); (D.K.G.); (M.G.K.); (N.V.P.); (N.P.K.); (P.A.A.)
| | - Michael A. Terzidis
- Department of Nutritional Sciences and Dietetics, International Hellenic University, Sindos Campus, 57400 Thessaloniki, Greece
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14
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Levín P, Balsa LM, Silva CP, Herzog AE, Vega A, Pavez J, León IE, Lemus L. Artificial Chemical Nuclease and Cytotoxic Activity of a Mononuclear Copper(I) Complex and a Related Binuclear Double‐Stranded Helicate. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Pedro Levín
- Departamento Química de los Materiales Facultad de Química y Biología Universidad de Santiago de Chile Av. Libertador B. O'Higgins, 3363 Santiago Chile
| | - Lucía M. Balsa
- Centro de Química Inorgánica (CEQUINOR-CONICET-UNLP) Facultad de Ciencias Exactas Universidad Nacional de La Plata Bv 120 1465 La Plata Argentina
| | - Carlos P. Silva
- Departamento Química de los Materiales Facultad de Química y Biología Universidad de Santiago de Chile Av. Libertador B. O'Higgins, 3363 Santiago Chile
- Soft Matter Research and Technology Center, SMAT-C Santiago Chile
| | - Austin E. Herzog
- Chemistry Department Johns Hopkins University Baltimore MD 21218 USA
| | - Andrés Vega
- Departamento de Ciencias Químicas Facultad de Ciencias Exactas Universidad Andrés Bello Viña del Mar Chile
- Centro para el Desarrollo de Nanociencias y Nanotecnología, CEDENNA Santiago Chile
| | - Jorge Pavez
- Departamento Química de los Materiales Facultad de Química y Biología Universidad de Santiago de Chile Av. Libertador B. O'Higgins, 3363 Santiago Chile
- Soft Matter Research and Technology Center, SMAT-C Santiago Chile
| | - Ignacio E. León
- Centro de Química Inorgánica (CEQUINOR-CONICET-UNLP) Facultad de Ciencias Exactas Universidad Nacional de La Plata Bv 120 1465 La Plata Argentina
| | - Luis Lemus
- Departamento Química de los Materiales Facultad de Química y Biología Universidad de Santiago de Chile Av. Libertador B. O'Higgins, 3363 Santiago Chile
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15
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McStay N, Slator C, Singh V, Gibney A, Westerlund F, Kellett A. Click and Cut: a click chemistry approach to developing oxidative DNA damaging agents. Nucleic Acids Res 2021; 49:10289-10308. [PMID: 34570227 PMCID: PMC8501983 DOI: 10.1093/nar/gkab817] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Revised: 09/01/2021] [Accepted: 09/07/2021] [Indexed: 01/04/2023] Open
Abstract
Metallodrugs provide important first-line treatment against various forms of human cancer. To overcome chemotherapeutic resistance and widen treatment possibilities, new agents with improved or alternative modes of action are highly sought after. Here, we present a click chemistry strategy for developing DNA damaging metallodrugs. The approach involves the development of a series of polyamine ligands where three primary, secondary or tertiary alkyne-amines were selected and ‘clicked’ using the copper-catalysed azide-alkyne cycloaddition reaction to a 1,3,5-azide mesitylene core to produce a family of compounds we call the ‘Tri-Click’ (TC) series. From the isolated library, one dominant ligand (TC1) emerged as a high-affinity copper(II) binding agent with potent DNA recognition and damaging properties. Using a range of in vitro biophysical and molecular techniques—including free radical scavengers, spin trapping antioxidants and base excision repair (BER) enzymes—the oxidative DNA damaging mechanism of copper-bound TC1 was elucidated. This activity was then compared to intracellular results obtained from peripheral blood mononuclear cells exposed to Cu(II)–TC1 where use of BER enzymes and fluorescently modified dNTPs enabled the characterisation and quantification of genomic DNA lesions produced by the complex. The approach can serve as a new avenue for the design of DNA damaging agents with unique activity profiles.
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Affiliation(s)
- Natasha McStay
- School of Chemical Sciences and National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland.,Synthesis and Solid-State Pharmaceutical Centre, School of Chemical Sciences, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Creina Slator
- School of Chemical Sciences and National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Vandana Singh
- Department of Biology and Biological Engineering, Chalmers University of Technology, Gothenburg, Sweden
| | - Alex Gibney
- School of Chemical Sciences and National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland.,Synthesis and Solid-State Pharmaceutical Centre, School of Chemical Sciences, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Fredrik Westerlund
- Department of Biology and Biological Engineering, Chalmers University of Technology, Gothenburg, Sweden
| | - Andrew Kellett
- School of Chemical Sciences and National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland.,Synthesis and Solid-State Pharmaceutical Centre, School of Chemical Sciences, Dublin City University, Glasnevin, Dublin 9, Ireland
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16
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Fantoni NZ, Brown T, Kellett A. DNA-Targeted Metallodrugs: An Untapped Source of Artificial Gene Editing Technology. Chembiochem 2021; 22:2184-2205. [PMID: 33570813 DOI: 10.1002/cbic.202000838] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Revised: 02/09/2021] [Indexed: 12/20/2022]
Abstract
DNA binding metal complexes are synonymous with anticancer drug discovery. Given the array of structural and chemical reactivity properties available through careful design, metal complexes have been directed to bind nucleic acid structures through covalent or noncovalent binding modes. Several recognition modes - including crosslinking, intercalation, and oxidation - are central to the clinical success of broad-spectrum anticancer metallodrugs. However, recent progress in nucleic acid click chemistry coupled with advancement in our understanding of metal complex-nucleic acid interactions has opened up new avenues in genetic engineering and targeted therapies. Several of these applications are enabled by the hybridisation of oligonucleotide or polyamine probes to discrete metal complexes, which facilitate site-specific reactivity at the nucleic acid interface under the guidance of the probe. This Review focuses on recent advancements in hybrid design and, by way of an introduction to this topic, we provide a detailed overview of nucleic acid structures and metal complex-nucleic acid interactions. Our aim is to provide readers with an insight on the rational design of metal complexes with DNA recognition properties and an understanding of how the sequence-specific targeting of these interactions can be achieved for gene engineering applications.
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Affiliation(s)
- Nicolò Zuin Fantoni
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, United Kingdom
| | - Tom Brown
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, United Kingdom
| | - Andrew Kellett
- School of Chemical Sciences and National Institute for, Cellular Biotechnology and Nano Research Facility, Dublin City University, Glasnevin, Dublin, 9, Ireland
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17
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Synthesis and crystal structures of cytotoxic mixed-ligand copper(II) complexes with alkyl tetrazole and polypyridine derivatives. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2020.120169] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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18
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Fernandes LDP, Silva JMB, Martins DOS, Santiago MB, Martins CHG, Jardim ACG, Oliveira GS, Pivatto M, Souza RAC, Franca EDF, Deflon VM, Machado AEH, Oliveira CG. Fragmentation Study, Dual Anti-Bactericidal and Anti-Viral Effects and Molecular Docking of Cobalt(III) Complexes. Int J Mol Sci 2020; 21:ijms21218355. [PMID: 33171773 PMCID: PMC7664407 DOI: 10.3390/ijms21218355] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 11/02/2020] [Accepted: 11/03/2020] [Indexed: 01/22/2023] Open
Abstract
Considering our previous findings on the remarkable activity exhibited by cobalt(III) with 2-acetylpyridine-N(4)-R-thiosemicarbazone (Hatc-R) compounds against Mycobacterium tuberculosis, the present study aimed to explored new structure features of the complexes of the type [Co(atc--R)2]Cl, where R = methyl (Me, 1) or phenyl (Ph, 2) (13C NMR, high-resolution mass spectrometry, LC-MS/MS, fragmentation study) together with its antibacterial and antiviral biological activities. The minimal inhibitory and minimal bactericidal concentrations (MIC and MBC) were determined, as well as the antiviral potential of the complexes on chikungunya virus (CHIKV) infection in vitro and cell viability. [Co(atc-Ph)2]Cl revealed promising MIC and MBC values which ranged from 0.39 to 0.78 µg/mL in two strains tested and presented high potential against CHIKV by reducing viral replication by up to 80%. The results showed that the biological activity is strongly influenced by the peripheral substituent groups at the N(4) position of the atc-R1- ligands. In addition, molecular docking analysis was performed. The relative binding energy of the docked compound with five bacteria strains was found in the range of -3.45 and -9.55 kcal/mol. Thus, this work highlights the good potential of cobalt(III) complexes and provide support for future studies on this molecule aiming at its antibacterial and antiviral therapeutic application.
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Affiliation(s)
- Laísa de P. Fernandes
- Instituto de Química, Universidade Federal de Uberlândia, Uberlândia 38400-902, MG, Brazil; (L.d.P.F.); (G.S.O.); (M.P.); (R.A.C.S.)
| | - Júlia M. B. Silva
- Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia, Uberlândia 38408-100, MG, Brazil; (J.M.B.S.); (D.O.S.M.); (M.B.S.); (C.H.G.M.); (A.C.G.J.)
| | - Daniel O. S. Martins
- Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia, Uberlândia 38408-100, MG, Brazil; (J.M.B.S.); (D.O.S.M.); (M.B.S.); (C.H.G.M.); (A.C.G.J.)
| | - Mariana B. Santiago
- Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia, Uberlândia 38408-100, MG, Brazil; (J.M.B.S.); (D.O.S.M.); (M.B.S.); (C.H.G.M.); (A.C.G.J.)
| | - Carlos H. G. Martins
- Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia, Uberlândia 38408-100, MG, Brazil; (J.M.B.S.); (D.O.S.M.); (M.B.S.); (C.H.G.M.); (A.C.G.J.)
| | - Ana C. G. Jardim
- Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia, Uberlândia 38408-100, MG, Brazil; (J.M.B.S.); (D.O.S.M.); (M.B.S.); (C.H.G.M.); (A.C.G.J.)
| | - Guedmiller S. Oliveira
- Instituto de Química, Universidade Federal de Uberlândia, Uberlândia 38400-902, MG, Brazil; (L.d.P.F.); (G.S.O.); (M.P.); (R.A.C.S.)
| | - Marcos Pivatto
- Instituto de Química, Universidade Federal de Uberlândia, Uberlândia 38400-902, MG, Brazil; (L.d.P.F.); (G.S.O.); (M.P.); (R.A.C.S.)
| | - Rafael A. C. Souza
- Instituto de Química, Universidade Federal de Uberlândia, Uberlândia 38400-902, MG, Brazil; (L.d.P.F.); (G.S.O.); (M.P.); (R.A.C.S.)
| | - Eduardo de F. Franca
- Laboratório de Cristalografia e Química Computacional, Instituto de Química, Universidade Federal de Uberlândia, UFU, Uberlândia 38408-100, MG, Brazil;
| | - Victor M. Deflon
- Instituto de Química de São Carlos, Universidade de São Paulo, São Carlos 13566-590, SP, Brazil;
| | - Antonio E. H. Machado
- Laboratório de Fotoquímica e Ciências dos Materiais, Instituto de Química, Universidade Federal de Uberlândia, Uberlândia 38400-902, MG, Brazil;
- Unidade Acadêmica Especial de Física, Programa de Pós-Graduação em Ciências Exatas e Tecnol., Universidade Federal de Catalão, Catalão 75705-220, GO, Brasil
| | - Carolina G. Oliveira
- Instituto de Química, Universidade Federal de Uberlândia, Uberlândia 38400-902, MG, Brazil; (L.d.P.F.); (G.S.O.); (M.P.); (R.A.C.S.)
- Correspondence: ; Tel.: +55-34-9997-9271
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19
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Lauria T, Slator C, McKee V, Müller M, Stazzoni S, Crisp AL, Carell T, Kellett A. A Click Chemistry Approach to Developing Molecularly Targeted DNA Scissors. Chemistry 2020; 26:16782-16792. [PMID: 32706904 DOI: 10.1002/chem.202002860] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Revised: 07/23/2020] [Indexed: 12/21/2022]
Abstract
Nucleic acid click chemistry was used to prepare a family of chemically modified triplex forming oligonucleotides (TFOs) for application as a new gene-targeted technology. Azide-bearing phenanthrene ligands-designed to promote triplex stability and copper binding-were 'clicked' to alkyne-modified parallel TFOs. Using this approach, a library of TFO hybrids was prepared and shown to effectively target purine-rich genetic elements in vitro. Several of the hybrids provide significant stabilisation toward melting in parallel triplexes (>20 °C) and DNA damage can be triggered upon copper binding in the presence of added reductant. Therefore, the TFO and 'clicked' ligands work synergistically to provide sequence-selectivity to the copper cutting unit which, in turn, confers high stabilisation to the DNA triplex. To extend the boundaries of this hybrid system further, a click chemistry-based di-copper binding ligand was developed to accommodate designer ancillary ligands such as DPQ and DPPZ. When this ligand was inserted into a TFO, a dramatic improvement in targeted oxidative cleavage is afforded.
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Affiliation(s)
- Teresa Lauria
- School of Chemical Sciences and National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin, 9, Ireland
| | - Creina Slator
- School of Chemical Sciences and National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin, 9, Ireland
| | - Vickie McKee
- School of Chemical Sciences and National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin, 9, Ireland.,Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230, Odense M, Denmark
| | - Markus Müller
- Department of Chemistry, Ludwig-Maximilians-Universität, Butenandtstrasse 5-13, 81377, Munich, Germany
| | - Samuele Stazzoni
- Department of Chemistry, Ludwig-Maximilians-Universität, Butenandtstrasse 5-13, 81377, Munich, Germany
| | - Antony L Crisp
- Department of Chemistry, Ludwig-Maximilians-Universität, Butenandtstrasse 5-13, 81377, Munich, Germany
| | - Thomas Carell
- Department of Chemistry, Ludwig-Maximilians-Universität, Butenandtstrasse 5-13, 81377, Munich, Germany
| | - Andrew Kellett
- School of Chemical Sciences and National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin, 9, Ireland.,CÚRAM, Centre for Research in Medical Devices, Dublin City University, Glasnevin, Dublin, 9, Ireland
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20
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Fantoni NZ, Molphy Z, O'Carroll S, Menounou G, Mitrikas G, Krokidis MG, Chatgilialoglu C, Colleran J, Banasiak A, Clynes M, Roche S, Kelly S, McKee V, Kellett A. Polypyridyl-Based Copper Phenanthrene Complexes: Combining Stability with Enhanced DNA Recognition. Chemistry 2020; 27:971-983. [PMID: 32519773 DOI: 10.1002/chem.202001996] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 06/09/2020] [Indexed: 02/06/2023]
Abstract
We report a series of copper(II) artificial metallo-nucleases (AMNs) and demonstrate their DNA damaging properties and in-vitro cytotoxicity against human-derived pancreatic cancer cells. The compounds combine a tris-chelating polypyridyl ligand, di-(2-pycolyl)amine (DPA), and a DNA intercalating phenanthrene unit. Their general formula is Cu-DPA-N,N' (where N,N'=1,10-phenanthroline (Phen), dipyridoquinoxaline (DPQ) or dipyridophenazine (DPPZ)). Characterisation was achieved by X-ray crystallography and continuous-wave EPR (cw-EPR), hyperfine sublevel correlation (HYSCORE) and Davies electron-nuclear double resonance (ENDOR) spectroscopies. The presence of the DPA ligand enhances solution stability and facilitates enhanced DNA recognition with apparent binding constants (Kapp ) rising from 105 to 107 m-1 with increasing extent of planar phenanthrene. Cu-DPA-DPPZ, the complex with greatest DNA binding and intercalation effects, recognises the minor groove of guanine-cytosine (G-C) rich sequences. Oxidative DNA damage also occurs in the minor groove and can be inhibited by superoxide and hydroxyl radical trapping agents. The complexes, particularly Cu-DPA-DPPZ, display promising anticancer activity against human pancreatic tumour cells with in-vitro results surpassing the clinical platinum(II) drug oxaliplatin.
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Affiliation(s)
- Nicoló Zuin Fantoni
- School of Chemical Sciences and National Institute for Cellular, Biotechnology, Dublin City University, Glasnevin, Dublin, 9, Ireland.,Nicolò Zuin Fantoni-Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK
| | - Zara Molphy
- School of Chemical Sciences and National Institute for Cellular, Biotechnology, Dublin City University, Glasnevin, Dublin, 9, Ireland.,SSPC, the SFI Research Centre for Pharmaceuticals, School of Chemical Sciences, Dublin City University, Dublin, 9, Ireland
| | - Sinéad O'Carroll
- School of Chemical Sciences and National Institute for Cellular, Biotechnology, Dublin City University, Glasnevin, Dublin, 9, Ireland
| | - Georgia Menounou
- Consiglio Nazionale delle Ricerche, ISOF, Via P. Gobetti 101, 40129, Bologna, Italy
| | - George Mitrikas
- Institute of Nanoscience and Nanotechnology Demokritos, NCSR "Demokritos", Agia Paraskevi Attikis, 153, 10, Athens, Greece
| | - Marios G Krokidis
- Institute of Nanoscience and Nanotechnology Demokritos, NCSR "Demokritos", Agia Paraskevi Attikis, 153, 10, Athens, Greece
| | | | - John Colleran
- School of Chemical and Pharmaceutical Sciences, TU Dublin, Kevin Street, Dublin 8, Ireland.,Applied Electrochemistry Group, Focas Research Institute, TU Dublin, Camden Row, Dublin 8, Ireland
| | - Anna Banasiak
- Applied Electrochemistry Group, Focas Research Institute, TU Dublin, Camden Row, Dublin 8, Ireland
| | - Martin Clynes
- National Institute for Cellular Biotechnology, Dublin City University, Dublin, 9, Ireland
| | - Sandra Roche
- National Institute for Cellular Biotechnology, Dublin City University, Dublin, 9, Ireland
| | - Suainibhe Kelly
- National Institute for Cellular Biotechnology, Dublin City University, Dublin, 9, Ireland
| | - Vickie McKee
- School of Chemical Sciences and National Institute for Cellular, Biotechnology, Dublin City University, Glasnevin, Dublin, 9, Ireland.,Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230, Odense M, Denmark
| | - Andrew Kellett
- School of Chemical Sciences and National Institute for Cellular, Biotechnology, Dublin City University, Glasnevin, Dublin, 9, Ireland.,SSPC, the SFI Research Centre for Pharmaceuticals, School of Chemical Sciences, Dublin City University, Dublin, 9, Ireland
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21
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Zuin Fantoni N, McGorman B, Molphy Z, Singleton D, Walsh S, El-Sagheer AH, McKee V, Brown T, Kellett A. Development of Gene-Targeted Polypyridyl Triplex-Forming Oligonucleotide Hybrids. Chembiochem 2020; 21:3563-3574. [PMID: 32755000 DOI: 10.1002/cbic.202000408] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 07/30/2020] [Indexed: 02/02/2023]
Abstract
In the field of nucleic acid therapy there is major interest in the development of libraries of DNA-reactive small molecules which are tethered to vectors that recognize and bind specific genes. This approach mimics enzymatic gene editors, such as ZFNs, TALENs and CRISPR-Cas, but overcomes the limitations imposed by the delivery of a large protein endonuclease which is required for DNA cleavage. Here, we introduce a chemistry-based DNA-cleavage system comprising an artificial metallo-nuclease (AMN) that oxidatively cuts DNA, and a triplex-forming oligonucleotide (TFO) that sequence-specifically recognises duplex DNA. The AMN-TFO hybrids coordinate CuII ions to form chimeric catalytic complexes that are programmable - based on the TFO sequence employed - to bind and cut specific DNA sequences. Use of the alkyne-azide cycloaddition click reaction allows scalable and high-throughput generation of hybrid libraries that can be tuned for specific reactivity and gene-of-interest knockout. As a first approach, we demonstrate targeted cleavage of purine-rich sequences, optimisation of the hybrid system to enhance stability, and discrimination between target and off-target sequences. Our results highlight the potential of this approach where the cutting unit, which mimics the endonuclease cleavage machinery, is directly bound to a TFO guide by click chemistry.
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Affiliation(s)
- Nicolò Zuin Fantoni
- School of Chemical Sciences and National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland.,Present address: Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK
| | - Bríonna McGorman
- School of Chemical Sciences and National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Zara Molphy
- School of Chemical Sciences and National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland.,Synthesis and Solid-State Pharmaceutical Centre, School of Chemical Sciences, Dublin City University, Dublin 9, Ireland
| | - Daniel Singleton
- ATDBio Ltd., School of Chemistry, University of Southampton, Southampton, SO17 1BJ, UK
| | - Sarah Walsh
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK.,ATDBio Ltd., Magdalen Centre, Oxford Science Park, Oxford, OX4 4GA, UK
| | - Afaf H El-Sagheer
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK.,Chemistry Branch, Department of Science and Mathematics, Faculty of Petroleum and Mining Engineering, Suez University, Suez, 43721, Egypt
| | - Vickie McKee
- School of Chemical Sciences and National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland.,Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230, Odense M, Denmark
| | - Tom Brown
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK
| | - Andrew Kellett
- School of Chemical Sciences and National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland.,Synthesis and Solid-State Pharmaceutical Centre, School of Chemical Sciences, Dublin City University, Dublin 9, Ireland
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22
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Laskowski T, Andrałojć W, Grynda J, Gwarda P, Mazerski J, Gdaniec Z. A strong preference for the TA/TA dinucleotide step discovered for an acridine-based, potent antitumor dsDNA intercalator, C-1305: NMR-driven structural and sequence-specificity studies. Sci Rep 2020; 10:11697. [PMID: 32678133 PMCID: PMC7366671 DOI: 10.1038/s41598-020-68609-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 06/29/2020] [Indexed: 11/09/2022] Open
Abstract
Triazoloacridinone C-1305, a potent antitumor agent recommended for Phase I clinical trials, exhibits high activity towards a wide range of experimental colon carcinomas, in many cases associated with complete tumor regression. C-1305 is a well-established dsDNA intercalator, yet no information on its mode of binding into DNA is available to date. Herein, we present the NMR-driven and MD-refined reconstruction of the 3D structures of the d(CGATATCG)2:C-1305 and d(CCCTAGGG)2:C-1305 non-covalent adducts. In both cases, the ligand intercalates at the TA/TA site, forming well-defined dsDNA:drug 1:1 mol/mol complexes. Orientation of the ligand within the binding site was unambiguously established by the DNA/ligand proton-proton NOE contacts. A subsequent, NMR-driven study of the sequence-specificity of C-1305 using a series of DNA duplexes, allowed us to confirm a strong preference towards TA/TA dinucleotide steps, followed by the TG/CA steps. Interestingly, no interaction at all was observed with duplexes containing exclusively the AT/AT, GG/CC and GA/TC steps.
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Affiliation(s)
- Tomasz Laskowski
- Department of Pharmaceutical Technology and Biochemistry, Faculty of Chemistry, Gdańsk University of Technology, Gabriela Narutowicza Str. 11/12, 80-233, Gdańsk, Poland.
| | - Witold Andrałojć
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Zygmunta Noskowskiego Str. 12/14, 61-704, Poznań, Poland.
| | - Jakub Grynda
- Department of Pharmaceutical Technology and Biochemistry, Faculty of Chemistry, Gdańsk University of Technology, Gabriela Narutowicza Str. 11/12, 80-233, Gdańsk, Poland
| | - Paulina Gwarda
- Department of Pharmaceutical Technology and Biochemistry, Faculty of Chemistry, Gdańsk University of Technology, Gabriela Narutowicza Str. 11/12, 80-233, Gdańsk, Poland
| | - Jan Mazerski
- Department of Pharmaceutical Technology and Biochemistry, Faculty of Chemistry, Gdańsk University of Technology, Gabriela Narutowicza Str. 11/12, 80-233, Gdańsk, Poland
| | - Zofia Gdaniec
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Zygmunta Noskowskiego Str. 12/14, 61-704, Poznań, Poland
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23
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Ceron Jayme C, Ferreira Pires A, Tedesco AC. Development of DNA polymer films as a drug delivery system for the treatment of oral cancer. Drug Deliv Transl Res 2020; 10:1612-1625. [DOI: 10.1007/s13346-020-00801-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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24
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Andres SA, Bajaj K, Vishnosky NS, Peterson MA, Mashuta MS, Buchanan RM, Bates PJ, Grapperhaus CA. Synthesis, Characterization, and Biological Activity of Hybrid Thiosemicarbazone–Alkylthiocarbamate Metal Complexes. Inorg Chem 2020; 59:4924-4935. [DOI: 10.1021/acs.inorgchem.0c00182] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Sarah A. Andres
- Department of Medicine and James Graham Brown Cancer Center, University of Louisville, Louisville, Kentucky 40202, United States
| | - Kritika Bajaj
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292, United States
| | - Nicholas S. Vishnosky
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292, United States
| | - Megan A. Peterson
- Department of Medicine and James Graham Brown Cancer Center, University of Louisville, Louisville, Kentucky 40202, United States
| | - Mark S. Mashuta
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292, United States
| | - Robert M. Buchanan
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292, United States
| | - Paula J. Bates
- Department of Medicine and James Graham Brown Cancer Center, University of Louisville, Louisville, Kentucky 40202, United States
| | - Craig A. Grapperhaus
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292, United States
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25
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Panattoni A, El-Sagheer AH, Brown T, Kellett A, Hocek M. Oxidative DNA Cleavage with Clip-Phenanthroline Triplex-Forming Oligonucleotide Hybrids. Chembiochem 2019; 21:991-1000. [PMID: 31680391 DOI: 10.1002/cbic.201900670] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Indexed: 12/13/2022]
Abstract
A systematic study of several new types of hybrids of Cu-chelated clamped phenanthroline artificial metallonuclease (AMN) with triplex-forming oligonucleotides (TFO) for sequence-specific cleavage of double-stranded DNA (dsDNA) is reported. The synthesis of these AMN-TFO hybrids is based on application of the alkyne-azide cycloaddition click reaction as the key step. The AMN was attached through different linkers at either the 5'- or 3'-ends or in the middle of the TFO stretch. The diverse hybrids efficiently formed triplexes with the target purine-rich sequence and their copper complexes were studied for their ability to cleave dsDNA in the presence of ascorbate as a reductant. In all cases, the influence of the nature and length of the AMN-TFO, time, conditions and amounts of ascorbate were studied, and optimum conjugates and a procedure that gave reasonably efficient (up to 34 %) cleavage of the target sequence, while rendering an off-target dsDNA intact, were found. The footprint of cleavage on PAGE was identified only in one case, with low conversion; this means that cleavage does not proceed with single nucleotide precision. On the other hand, these AMN-TFO hybrids are useful for the selective degradation of target dsDNA sequences. Future improvements to this design may provide higher resolution and selectivity.
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Affiliation(s)
- Alessandro Panattoni
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Gilead & IOCB Research Centre, Flemingovo namesti 2, 16610, Prague 6, Czech Republic.,Department of Organic Chemistry, Faculty of Science, Charles University in Prague, Hlavova 8, Prague-2, 12843, Czech Republic
| | - Afaf H El-Sagheer
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, United Kingdom
| | - Tom Brown
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, United Kingdom
| | - Andrew Kellett
- School of Chemical Sciences, National Institute for Cellular Biotechnology and Nano Research Facility, Dublin City University, Glasnevin, Dublin, 9, Ireland.,Synthesis and Solid-State Pharmaceutical Centre, School of Chemical Sciences, Dublin City University, Glasnevin, Dublin, 9, Ireland
| | - Michal Hocek
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Gilead & IOCB Research Centre, Flemingovo namesti 2, 16610, Prague 6, Czech Republic.,Department of Organic Chemistry, Faculty of Science, Charles University in Prague, Hlavova 8, Prague-2, 12843, Czech Republic
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26
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Copper bis-Dipyridoquinoxaline Is a Potent DNA Intercalator that Induces Superoxide-Mediated Cleavage via the Minor Groove. Molecules 2019; 24:molecules24234301. [PMID: 31779066 PMCID: PMC6930674 DOI: 10.3390/molecules24234301] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 11/19/2019] [Accepted: 11/20/2019] [Indexed: 01/25/2023] Open
Abstract
Herein, we report the synthesis, characterisation, X-ray crystallography, and oxidative DNA binding interactions of the copper artificial metallo-nuclease [Cu(DPQ)2(NO3)](NO3), where DPQ = dipyrido[3,2-f:2',3'-h]quinoxaline. The cation [Cu(DPQ)2]2+ (Cu-DPQ), is a high-affinity binder of duplex DNA and presents an intercalative profile in topoisomerase unwinding and viscosity experiments. Artificial metallo-nuclease activity occurs in the absence of exogenous reductant but is greatly enhanced by the presence of the reductant Na-L-ascorbate. Mechanistically, oxidative DNA damage occurs in the minor groove, is mediated aerobically by the Cu(I) complex and is dependent on both superoxide and hydroxyl radical generation. To corroborate cleavage at the minor groove, DNA oxidation of a cytosine-guanine (5'-CCGG-3')-rich oligomer was examined in tandem with a 5-methylcytosine (5'-C5mCGG-3') derivative where 5mC served to sterically block the major groove and direct damage to the minor groove. Overall, both the DNA binding affinity and cleavage mechanism of Cu-DPQ depart from Sigman's reagent [Cu(1,10-phenanthroline)2]2+; however, both complexes are potent oxidants of the minor groove.
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27
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Barrett S, De Franco M, Kellett A, Dempsey E, Marzano C, Erxleben A, Gandin V, Montagner D. Anticancer activity, DNA binding and cell mechanistic studies of estrogen-functionalised Cu(II) complexes. J Biol Inorg Chem 2019; 25:49-60. [DOI: 10.1007/s00775-019-01732-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Accepted: 10/08/2019] [Indexed: 12/20/2022]
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28
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Assessment of DNA Topoisomerase I Unwinding Activity, Radical Scavenging Capacity, and Inhibition of Breast Cancer Cell Viability of N-alkyl-acridones and N, N'-dialkyl-9,9'-biacridylidenes. Biomolecules 2019; 9:biom9050177. [PMID: 31072044 PMCID: PMC6572364 DOI: 10.3390/biom9050177] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2019] [Revised: 05/06/2019] [Accepted: 05/07/2019] [Indexed: 11/26/2022] Open
Abstract
The anticancer activity of acridone derivatives has attracted increasing interest, therefore, a variety of substituted analogs belonging to this family have been developed and evaluated for their anti-cancer properties. A series of N-alkyl-acridones 1–6 and N,N′-dialkyl-9,9′-biacridylidenes 7–12 with variable alkyl chains were examined for their topoisomerase I activity at neutral and acidic conditions as well as for their binding capacity to calf thymus and possible radical trapping antioxidant activity. It was found that at a neutral pH, topoisomerase I activity of both classes of compounds was similar, while under acidic conditions, enhanced intercalation was observed. N-alkyl-acridone derivatives 1–6 exhibited stronger, dose-dependent, cytotoxic activity against MCF-7 human breast epithelial cancer cells than N,N′-dialkyl-9,9′-biacridylidenes 7–12, revealing that conjugation of the heteroaromatic system plays a significant role on the effective distribution of the compound in the intracellular environment. Cellular investigation of long alkyl derivatives against cell migration exhibited 40–50% wound healing effects and cytoplasm diffusion, while compounds with shorter alkyl chains were accumulated both in the nucleus and cytoplasm. All N,N′-dialkyl-9,9′-biacridylidenes showed unexpected high scavenging activity towards DPPH or ABTS radicals which may be explained by higher stabilization of radical cations by the extended conjugation of heteroaromatic ring system.
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29
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Kellett A, Molphy Z, Slator C, McKee V, Farrell NP. Molecular methods for assessment of non-covalent metallodrug-DNA interactions. Chem Soc Rev 2019; 48:971-988. [PMID: 30714595 PMCID: PMC6657641 DOI: 10.1039/c8cs00157j] [Citation(s) in RCA: 169] [Impact Index Per Article: 33.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Herein we provide an accessible account of molecular methods to probe inorganic–nucleic acid interactions. Techniques are described using copper(ii) and platinum(ii) complexes prepared in our laboratories.
The binding of small molecule metallodrugs to discrete regions of nucleic acids is an important branch of medicinal chemistry and the nature of these interactions, allied with sequence selectivity, forms part of the backbone of modern medicinal inorganic chemistry research. In this tutorial review we describe a range of molecular methods currently employed within our laboratories to explore novel metallodrug–DNA interactions. At the outset, an introduction to DNA from a structural perspective is provided along with descriptions of non-covalent DNA recognition focusing on intercalation, insertion, and phosphate binding. Molecular methods, described from a non-expert perspective, to identify non-covalent and pre-associative nucleic acid recognition are then demonstrated using a variety of techniques including direct (non-optical) and indirect (optical) methods. Direct methods include: X-ray crystallography; NMR spectroscopy; mass spectrometry; and viscosity while indirect approaches detail: competitive inhibition experiments; fluorescence and absorbance spectroscopy; circular dichroism; and electrophoresis-based techniques. For each method described we provide an overview of the technique, a detailed examination of results obtained and relevant follow-on of advanced biophysical/analytical techniques. To achieve this, a selection of relevant copper(ii) and platinum(ii) complexes developed within our laboratories are discussed and are compared, where possible, to classical DNA binding agents. Applying these molecular methods enables us to determine structure–activity factors important to rational metallodrug design. In many cases, combinations of molecular methods are required to comprehensively elucidate new metallodrug–DNA interactions and, from a drug discovery perspective, coupling this data with cellular responses helps to inform understanding of how metallodrug–DNA binding interactions manifest cytotoxic action.
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Affiliation(s)
- Andrew Kellett
- School of Chemical Sciences and the National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland.
| | - Zara Molphy
- School of Chemical Sciences and the National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland.
| | - Creina Slator
- School of Chemical Sciences and the National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland.
| | - Vickie McKee
- School of Chemical Sciences and the National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland. and Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark
| | - Nicholas P Farrell
- Department of Chemistry, Virginia Commonwealth University, Richmond, VA 23284-2006, USA.
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30
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Oxidative Assets Toward Biomolecules and Cytotoxicity of New Oxindolimine-Copper(II) and Zinc(II) Complexes. INORGANICS 2019. [DOI: 10.3390/inorganics7020012] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
A new oxindolimine ligand derived from isatin (1H-indole-2,3-dione) and 2-aminomethylbenzimidazole was synthesized, leading to two novel complexes after metalation with copper(II) perchlorate or zinc(II) chloride, [Cu(isambz)2](ClO4)2 (complex 1) and [Zn(isambz)Cl2] (complex 2). This new ligand was designed as a more lipophilic compound, in a series of oxindolimine–metal complexes with antitumor properties, having DNA, mitochondria, and some proteins, such as CDK1 kinase and topoisomerase IB, as key targets. The new complexes had their reactivity to human serum albumin (HSA) and DNA, and their cytotoxicity toward tumor cells investigated. The binding to CT-DNA was monitored by circular dichroism (CD) spectroscopy and fluorescence measurements using ethidium bromide in a competitive assay. Consequent DNA cleavage was verified by gel electrophoresis with complex 1, in nmolar concentrations, with formation of linear DNA (form III) after 60 min incubation at 37 °C, in the presence of hydrogen peroxide, which acts as a reducing agent. Formation of reactive oxygen species (ROS) was observed, monitored by spin trapping EPR. Interaction with HSA lead to α-helix structure disturbance, and formation of a stable radical species (HSA–Tyr·) and carbonyl groups in the protein. Despite showing oxidative ability to damage vital biomolecules such as HSA and DNA, these new complexes showed moderate cytotoxicity against hepatocellular carcinoma (HepG2) and neuroblastoma (SHSY5Y) cells, similarly to previous compounds in this series. These results confirm DNA as an important target for these compounds, and additionally indicate that oxidative damage is not the leading mechanism responsible for their cytotoxicity. Additionally, this work emphasizes the importance of ligand characteristics and of speciation in activity of metal complexes.
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31
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Ude Z, Kavanagh K, Twamley B, Pour M, Gathergood N, Kellett A, Marmion CJ. A new class of prophylactic metallo-antibiotic possessing potent anti-cancer and anti-microbial properties. Dalton Trans 2019; 48:8578-8593. [DOI: 10.1039/c9dt00250b] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A family of metallo-antibiotics of general formula [Cu(N,N)(CipA)Cl] where N,N is a phenanthrene ligand and CipA is a derivative of the clinically used fluoroquinolone antibiotic ciprofloxacin – targeting immunocompromised cancer patients undergoing chemotherapy.
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Affiliation(s)
- Ziga Ude
- Centre for Synthesis and Chemical Biology
- Department of Chemistry
- Royal College of Surgeons in Ireland
- Dublin 2
- Ireland
| | | | - Brendan Twamley
- School of Chemistry
- Trinity College Dublin
- University of Dublin College Green
- Dublin 2
- Ireland
| | - Milan Pour
- Department of Organic and Bioorganic Chemistry
- Faculty of Pharmacy
- Charles University
- 500 05 Hradec Kralove
- Czech Republic
| | - Nicholas Gathergood
- ERA Chair of Green Chemistry
- Division of Chemistry
- Department of Chemistry and Biotechnology
- School of Science
- Tallinn University of Technology
| | - Andrew Kellett
- School of Chemical Sciences and the National Institute for Cellular Biotechnology
- Dublin City University
- Dublin 9
- Ireland
| | - Celine J. Marmion
- Centre for Synthesis and Chemical Biology
- Department of Chemistry
- Royal College of Surgeons in Ireland
- Dublin 2
- Ireland
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32
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Massoud SS, Louka FR, Tusa AF, Bordelon NE, Fischer RC, Mautner FA, Vančo J, Hošek J, Dvořák Z, Trávníček Z. Copper(ii) complexes based on tripodal pyridyl amine derivatives as efficient anticancer agents. NEW J CHEM 2019. [DOI: 10.1039/c9nj00061e] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The in vitro cytotoxicity of a series of chlorido-Cu(ii) complexes based on tripod pyridyl N4-donor derivatives revealed significant-to-moderate cytotoxicity against human cancer cell lines with the best results obtained for [Cu(BQPA)Cl]ClO4/PF6 (5-ClO4/PF6) with IC50 values of 4.7–10.8 μM.
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Affiliation(s)
- Salah S. Massoud
- Department of Chemistry
- University of Louisiana at Lafayette
- Lafayette
- USA
| | - Febee R. Louka
- Department of Chemistry
- University of Louisiana at Lafayette
- Lafayette
- USA
| | - Ada F. Tusa
- Department of Chemistry
- University of Louisiana at Lafayette
- Lafayette
- USA
| | | | - Roland C. Fischer
- Institut für Anorganische Chemische
- Technische Universität Graz
- A-8010 Graz
- Austria
| | - Franz A. Mautner
- Institut für Physikalische and Theoretische Chemie
- Technische Universität Graz
- Graz
- Austria
| | - Ján Vančo
- Division of Biologically Active Complexes and Molecular Magnets
- Regional Centre of Advanced Technologies and Materials
- Faculty of Science
- Palacký University
- CZ-783 71 Olomouc
| | - Jan Hošek
- Division of Biologically Active Complexes and Molecular Magnets
- Regional Centre of Advanced Technologies and Materials
- Faculty of Science
- Palacký University
- CZ-783 71 Olomouc
| | - Zdeněk Dvořák
- Division of Biologically Active Complexes and Molecular Magnets
- Regional Centre of Advanced Technologies and Materials
- Faculty of Science
- Palacký University
- CZ-783 71 Olomouc
| | - Zdeněk Trávníček
- Division of Biologically Active Complexes and Molecular Magnets
- Regional Centre of Advanced Technologies and Materials
- Faculty of Science
- Palacký University
- CZ-783 71 Olomouc
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Toniolo G, Louka M, Menounou G, Fantoni NZ, Mitrikas G, Efthimiadou EK, Masi A, Bortolotti M, Polito L, Bolognesi A, Kellett A, Ferreri C, Chatgilialoglu C. [Cu(TPMA)(Phen)](ClO 4) 2: Metallodrug Nanocontainer Delivery and Membrane Lipidomics of a Neuroblastoma Cell Line Coupled with a Liposome Biomimetic Model Focusing on Fatty Acid Reactivity. ACS OMEGA 2018; 3:15952-15965. [PMID: 30556020 PMCID: PMC6288809 DOI: 10.1021/acsomega.8b02526] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Accepted: 11/09/2018] [Indexed: 06/09/2023]
Abstract
The use of copper complexes for redox and oxidative-based mechanisms in therapeutic strategies is an important field of multidisciplinary research. Here, a novel Cu(II) complex [Cu(TPMA)(Phen)](ClO4)2 (Cu-TPMA-Phen, where TPMA = tris-(2-pyridylmethyl)amine and Phen = 1,10-phenanthroline) was studied using both the free and encapsulated forms. A hollow pH-sensitive drug-delivery system was synthesized, characterized, and used to encapsulate and release the copper complex, thus allowing for the comparison with the free drug. The human neuroblastoma-derived cell line NB100 was treated with 5 μM Cu-PMA-Phen for 24 h, pointing to the consequences on mono- and polyunsaturated fatty acids (MUFA and PUFA) present in the membrane lipidome, coupled with cell viability and death pathways (3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium viability assay, flow cytometry, microscopy, caspase activation). In parallel, the Cu-TPMA-Phen reactivity with the fatty acid moieties of phospholipids was studied using the liposome model to work in a biomimetic environment. The main results concerned: (i) the membrane lipidome in treated cells, involving remodeling with a specific increase of saturated fatty acids (SFAs) and a decrease of MUFA, but not PUFA; (ii) cytotoxic events and lipidome changes did not occur for the encapsulated Cu-TPMA-Phen, showing the influence of such nanocarriers on drug activity; and (iii) the liposome behavior confirmed that MUFA and PUFA fatty acid moieties in membranes are not affected by oxidative and isomerization reactions, proving the different reactivities of thiyl radicals generated from amphiphilic and hydrophilic thiols and Cu-TPMA-Phen. This study gives preliminary but important elements of copper(II) complex reactivity in cellular and biomimetic models, pointing mainly to the effects on membrane reactivity and remodeling based on the balance between SFA and MUFA in cell membranes that are subjects of strong interest for chemotherapeutic activities as well as connected to nutritional strategies.
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Affiliation(s)
- Gianluca Toniolo
- ISOF,
Consiglio Nazionale delle Ricerche, Via Piero Gobetti 101, 40129 Bologna, Italy
- Institute
of Nanoscience and Nanotechnology, N.C.S.R. “Demokritos”, 15310 Agia Paraskevi
Attikis, Greece
| | - Maria Louka
- ISOF,
Consiglio Nazionale delle Ricerche, Via Piero Gobetti 101, 40129 Bologna, Italy
- Laboratory
of Lipidomics, Lipinutragen Srl, Via Piero Gobetti 101, 40129 Bologna, Italy
- Department
of Experimental, Diagnostic and Specialty Medicine-DIMES, Alma Mater
Studiorum, University of Bologna, Via San Giacomo 14, 40126 Bologna, Italy
| | - Georgia Menounou
- ISOF,
Consiglio Nazionale delle Ricerche, Via Piero Gobetti 101, 40129 Bologna, Italy
| | - Nicolò Zuin Fantoni
- School
of Chemical Sciences and National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - George Mitrikas
- Institute
of Nanoscience and Nanotechnology, N.C.S.R. “Demokritos”, 15310 Agia Paraskevi
Attikis, Greece
| | - Eleni K. Efthimiadou
- Institute
of Nanoscience and Nanotechnology, N.C.S.R. “Demokritos”, 15310 Agia Paraskevi
Attikis, Greece
| | - Annalisa Masi
- ISOF,
Consiglio Nazionale delle Ricerche, Via Piero Gobetti 101, 40129 Bologna, Italy
| | - Massimo Bortolotti
- Department
of Experimental, Diagnostic and Specialty Medicine-DIMES, Alma Mater
Studiorum, University of Bologna, Via San Giacomo 14, 40126 Bologna, Italy
| | - Letizia Polito
- Department
of Experimental, Diagnostic and Specialty Medicine-DIMES, Alma Mater
Studiorum, University of Bologna, Via San Giacomo 14, 40126 Bologna, Italy
| | - Andrea Bolognesi
- Department
of Experimental, Diagnostic and Specialty Medicine-DIMES, Alma Mater
Studiorum, University of Bologna, Via San Giacomo 14, 40126 Bologna, Italy
| | - Andrew Kellett
- School
of Chemical Sciences and National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Carla Ferreri
- ISOF,
Consiglio Nazionale delle Ricerche, Via Piero Gobetti 101, 40129 Bologna, Italy
- Laboratory
of Lipidomics, Lipinutragen Srl, Via Piero Gobetti 101, 40129 Bologna, Italy
| | - Chryssostomos Chatgilialoglu
- ISOF,
Consiglio Nazionale delle Ricerche, Via Piero Gobetti 101, 40129 Bologna, Italy
- Institute
of Nanoscience and Nanotechnology, N.C.S.R. “Demokritos”, 15310 Agia Paraskevi
Attikis, Greece
- Laboratory
of Lipidomics, Lipinutragen Srl, Via Piero Gobetti 101, 40129 Bologna, Italy
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Zuin Fantoni N, Molphy Z, Slator C, Menounou G, Toniolo G, Mitrikas G, McKee V, Chatgilialoglu C, Kellett A. Polypyridyl‐Based Copper Phenanthrene Complexes: A New Type of Stabilized Artificial Chemical Nuclease. Chemistry 2018; 25:221-237. [DOI: 10.1002/chem.201804084] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Indexed: 11/09/2022]
Affiliation(s)
- Nicoló Zuin Fantoni
- School of Chemical Sciences and National Institute for Cellular, BiotechnologyDublin City University 9 Glasnevin, Dublin Ireland
| | - Zara Molphy
- School of Chemical Sciences and National Institute for Cellular, BiotechnologyDublin City University 9 Glasnevin, Dublin Ireland
| | - Creina Slator
- School of Chemical Sciences and National Institute for Cellular, BiotechnologyDublin City University 9 Glasnevin, Dublin Ireland
| | - Georgia Menounou
- ISOF-CNR Area della Ricerca di Bologna Via P. Gobetti 101 40129 Bologna Italy
| | - Gianluca Toniolo
- Institute of Nanoscience and Nanotechnology, N.C.S.R. Demokritos Agia Paraskevi Attikis P.O. Box 60037, 15341 Athens Greece
| | - George Mitrikas
- Institute of Nanoscience and Nanotechnology, N.C.S.R. Demokritos Agia Paraskevi Attikis P.O. Box 60037, 15341 Athens Greece
| | - Vickie McKee
- School of Chemical Sciences and National Institute for Cellular, BiotechnologyDublin City University 9 Glasnevin, Dublin Ireland
- Department of Physics, Chemistry and PharmacyUniversity of Southern Denmark Campusvej 55 5230 Odense M Denmark
| | - Chryssostomos Chatgilialoglu
- ISOF-CNR Area della Ricerca di Bologna Via P. Gobetti 101 40129 Bologna Italy
- Institute of Nanoscience and Nanotechnology, N.C.S.R. Demokritos Agia Paraskevi Attikis P.O. Box 60037, 15341 Athens Greece
| | - Andrew Kellett
- School of Chemical Sciences and National Institute for Cellular, BiotechnologyDublin City University 9 Glasnevin, Dublin Ireland
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Synthesis, crystal structures and in vitro anticancer activities of two copper(II) coordination compounds. TRANSIT METAL CHEM 2018. [DOI: 10.1007/s11243-018-0288-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Molphy Z, Montagner D, Bhat SS, Slator C, Long C, Erxleben A, Kellett A. A phosphate-targeted dinuclear Cu(II) complex combining major groove binding and oxidative DNA cleavage. Nucleic Acids Res 2018; 46:9918-9931. [PMID: 30239938 PMCID: PMC6212767 DOI: 10.1093/nar/gky806] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Revised: 08/05/2018] [Accepted: 09/05/2018] [Indexed: 12/18/2022] Open
Abstract
Free radical generation is an inevitable consequence of aerobic existence and is implicated in a wide variety of pathological conditions including cancer, cardiovascular disease, ageing and neurodegenerative disorder. Free radicals can, however, be used to our advantage since their production is catalysed by synthetic inorganic molecules-termed artificial metallonucleases-that cut DNA strands by oxidative cleavage reactions. Here, we report the rational design and DNA binding interactions of a novel di-Cu2+ artificial metallonuclease [Cu2(tetra-(2-pyridyl)-NMe-naphthalene)Cl4] (Cu2TPNap). Cu2TPNap is a high-affinity binder of duplex DNA with an apparent binding constant (Kapp) of 107 M(bp)-1. The agent binds non-intercalatively in the major groove causing condensation and G-C specific destabilization. Artificial metallonuclease activity occurs in the absence of exogenous reductant, is dependent on superoxide and hydrogen peroxide, and gives rise to single strand DNA breaks. Pre-associative molecular docking studies with the 8-mer d(GGGGCCCC)2, a model for poly[d(G-C)2], identified selective major groove incorporation of the complex with ancillary Cu2+-phosphate backbone binding. Molecular mechanics methods then showed the d(GGGGCCCC)2 adduct to relax about the complex and this interaction is supported by UV melting experiments where poly[d(G-C)2] is selectively destabilized.
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Affiliation(s)
- Zara Molphy
- School of Chemical Sciences and National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Diego Montagner
- Department of Chemistry, Maynooth University, Maynooth, Kildare, Ireland
| | - Satish S Bhat
- School of Chemistry, National University of Ireland Galway, Galway, Ireland
| | - Creina Slator
- School of Chemical Sciences and National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Conor Long
- School of Chemical Sciences and National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Andrea Erxleben
- School of Chemistry, National University of Ireland Galway, Galway, Ireland
- Synthesis and Solid-State Pharmaceutical Centre, School of Chemistry, National University of Ireland Galway, Galway, Ireland
| | - Andrew Kellett
- School of Chemical Sciences and National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland
- Synthesis and Solid-State Pharmaceutical Centre, School of Chemical Sciences, Dublin City University, Glasnevin, Dublin 9, Ireland
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McGivern TJP, Slator C, Kellett A, Marmion CJ. Innovative DNA-Targeted Metallo-prodrug Strategy Combining Histone Deacetylase Inhibition with Oxidative Stress. Mol Pharm 2018; 15:5058-5071. [PMID: 30192548 DOI: 10.1021/acs.molpharmaceut.8b00652] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Cancer remains a global health challenge. There is an urgent need to develop innovative therapeutics that can overcome the shortcomings of existing cancer therapies. DNA enzymes involved in nucleic acid compaction and organization are an attractive cancer drug target for therapeutic exploitation. In this work, a family of Cu(II) prodrugs containing suberoylanilide hydroxamic acid (SAHA), a well-established histone deacetylase inhibitor (HDACi) and clinically approved cancer drug, and phenanthrene ligands as DNA intercalative components have been rationally developed. The complexes, of general formula [Cu(SAHA-1H)( N, N'-phenanthrene)]+, exhibit excellent DNA recognition with binding affinity of lead agents in the order of ∼107 M(bp)-1. Biophysical studies involving nucleic acid polymers indicate intercalative binding at both adenine-thymine (A-T) and guanine-cytosine (G-C) rich sequences but thermodynamically stable interactions are favored in G-C tracts. The complexes mediate DNA damage by producing reactive oxygen species (ROS) with spin trapping experiments showing that superoxide, the hydroxyl radical, and hydrogen peroxide play critical roles in strand scission. The agents were found to have promising antiproliferative effects against a panel of epithelial cancers, and in two representative cell lines possessing mutated p53 (SK-OV-3 and DU145), enhanced cytotoxicity was observed. Significantly, mechanistic experiments with the most promising candidates revealed HDAC inhibition activity was achieved over a shorter time frame as compared to clinical standards with DNA damage-response markers identifying upregulation of both DNA synthesis and nucleotide excision repair (NER) pathways. Finally, confocal imaging and gene expression analysis show this metallodrug class exerts cytotoxic activity predominantly through an apoptotic pathway.
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Affiliation(s)
- Tadhg J P McGivern
- Centre for Synthesis and Chemical Biology, Department of Chemistry , Royal College of Surgeons in Ireland , 123 St. Stephen's Green , Dublin 2 , Ireland.,School of Chemical Sciences and National Institute for Cellular Biotechnology , Dublin City University , Glasnevin, Dublin 9 , Ireland
| | - Creina Slator
- School of Chemical Sciences and National Institute for Cellular Biotechnology , Dublin City University , Glasnevin, Dublin 9 , Ireland
| | - Andrew Kellett
- School of Chemical Sciences and National Institute for Cellular Biotechnology , Dublin City University , Glasnevin, Dublin 9 , Ireland
| | - Celine J Marmion
- Centre for Synthesis and Chemical Biology, Department of Chemistry , Royal College of Surgeons in Ireland , 123 St. Stephen's Green , Dublin 2 , Ireland
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