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Durigon DC, Glitz VA, Pimenta BF, Guedes AMV, Silva JVO, Bella Cruz CC, Andrade LM, Pereira-Maia EC, Mikcha JMG, Bella Cruz A, Xavier FR, Terenzi HF, Poneti G, Ribeiro RR, Nordlander E, Caramori GF, Bortoluzzi AJ, Peralta RA. The influence of thioether-substituted ligands in dicopper(II) complexes: Enhancing oxidation and biological activities. J Inorg Biochem 2024; 256:112573. [PMID: 38678913 DOI: 10.1016/j.jinorgbio.2024.112573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 04/15/2024] [Accepted: 04/22/2024] [Indexed: 05/01/2024]
Abstract
This paper describes the synthesis, structural analysis, as well as the magnetic and spectroscopic characterizations of three new dicopper(II) complexes with dinucleating phenol-based ligands containing different thioether donor substituents: aromatic (1), aliphatic (2) or thiophene (3). Temperature-dependent magnetometry reveals the presence of antiferromagnetic coupling for 1 and 3 (J = -2.27 cm-1 and -5.01 cm-1, respectively, H = -2JS1S2) and ferromagnetic coupling for 2 (J = 5.72 cm-1). Broken symmetry DFT calculations attribute this behavior to a major contribution from the dz2 orbitals for 1 and 3, and from the dx2-y2 orbitals for 2, along with the p orbitals of the oxygens. The bioinspired catalytic activities of these complexes related to catechol oxidase were studied using 3,5-di-tert-butylcatechol as substrate. The order of catalytic rates for the substrate oxidation follows the trend 1 > 2 > 3 with kcat of (90.79 ± 2.90) × 10-3 for 1, (64.21 ± 0.99) × 10-3 for 2 and (14.20 ± 0.32) × 10-3 s-1 for 3. The complexes also cleave DNA through an oxidative mechanism with minor-groove preference, as indicated by experimental and molecular docking assays. Antimicrobial potential of these highly active complexes has shown that 3 inhibits both Staphylococcus aureus bacterium and Epidermophyton floccosum fungus. Notably, the complexes were found to be nontoxic to normal cells but exhibited cytotoxicity against epidermoid carcinoma cells, surpassing the activity of the metallodrug cisplatin. This research shows the multifaceted properties of these complexes, making them promising candidates for various applications in catalysis, nucleic acids research, and antimicrobial activities.
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Affiliation(s)
- Daniele C Durigon
- Departamento de Química, Universidade Federal de Santa Catarina, UFSC, CEP 88040-900 Florianópolis, SC, Brazil
| | - Vinícius A Glitz
- Departamento de Química, Universidade Federal de Santa Catarina, UFSC, CEP 88040-900 Florianópolis, SC, Brazil
| | - Beatriz F Pimenta
- Laboratório de Biologia Molecular Estrutural, Departamento de Bioquímica, Universidade Federal de Santa Catarina, UFSC, CEP 88040-900 Florianópolis, SC, Brazil
| | - Anderson M V Guedes
- Departamento de Química, Universidade Federal do Rio de Janeiro, UFRJ, CEP 21941-901 Rio de Janeiro, RJ, Brazil
| | - João V O Silva
- Departamento de Análises Clínicas e Biomedicina, Universidade Estadual de Maringá, UEM, CEP 87020-900 Maringá, PR, Brazil
| | - Catarina C Bella Cruz
- Centro de Ensino em Ciências da Saúde, Universidade do Vale do Itajaí, Univali, CEP 88302-901 Itajaí, SC, Brazil
| | - Lídia M Andrade
- Departamento de Genética, Ecologia e Evolução and Departamento de Física, Universidade Federal de Minas Gerais, UFMG, CEP 31270-901 Belo Horizonte, MG, Brazil
| | - Elene C Pereira-Maia
- Departamento de Química, Universidade Federal de Minas Gerais, UFMG, CEP 31270-901, Belo Horizonte, MG, Brazil
| | - Jane M G Mikcha
- Departamento de Análises Clínicas e Biomedicina, Universidade Estadual de Maringá, UEM, CEP 87020-900 Maringá, PR, Brazil
| | - Alexandre Bella Cruz
- Centro de Ensino em Ciências da Saúde, Universidade do Vale do Itajaí, Univali, CEP 88302-901 Itajaí, SC, Brazil
| | - Fernando R Xavier
- Departamento de Química, Universidade do Estado de Santa Catarina, UDESC, CEP 89219-710 Joinville, SC, Brazil
| | - Hernán F Terenzi
- Laboratório de Biologia Molecular Estrutural, Departamento de Bioquímica, Universidade Federal de Santa Catarina, UFSC, CEP 88040-900 Florianópolis, SC, Brazil
| | - Giordano Poneti
- Departamento de Química, Universidade Federal do Rio de Janeiro, UFRJ, CEP 21941-901 Rio de Janeiro, RJ, Brazil; Dipartimento di Scienze Ecologiche e Biologiche, Università degli Studi della Tuscia, Largo dell'Università, 01100 Viterbo, Italy
| | - Ronny R Ribeiro
- Departamento de Química, Universidade Federal do Paraná, UFPR, CEP 81531-980 Curitiba, PR, Brazil
| | - Ebbe Nordlander
- Chemical Physics, Department of Chemistry, Lund University, Box 124, SE-221 00 Lund, Sweden
| | - Giovanni F Caramori
- Departamento de Química, Universidade Federal de Santa Catarina, UFSC, CEP 88040-900 Florianópolis, SC, Brazil
| | - Adailton J Bortoluzzi
- Departamento de Química, Universidade Federal de Santa Catarina, UFSC, CEP 88040-900 Florianópolis, SC, Brazil
| | - Rosely A Peralta
- Departamento de Química, Universidade Federal de Santa Catarina, UFSC, CEP 88040-900 Florianópolis, SC, Brazil.
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Mendieta A, Álvarez-Idaboy JR, Ugalde-Saldívar VM, Flores-Álamo M, Armenta A, Ferrer-Sueta G, Gasque L. Role of Imidazole and Chelate Ring Size in Copper Oxidation Catalysts: An Experimental and Theoretical Study. Inorg Chem 2023; 62:16677-16690. [PMID: 37792328 DOI: 10.1021/acs.inorgchem.3c01236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Abstract
In this work, the structural, solution, electrochemical, and catalytic properties of the complexes with ligands derived from imidazole and pyridines were studied. A comparative study of five bioinspired copper catalysts with or without coordinated imidazole and with different chelate ring sizes is presented. Catalytic efficiency on the oxidation of 3,5-di-tert-butylcatechol (DTBC) and ortho-aminophenol (OAP) in a MeOH/H2O medium was assessed by means of the Michaelis-Menten model. Catalysts comprising imidazole-containing ligands and/or a six-membered chelate ring proved to be more efficient in both oxidation reactions. Determination of stability constants and electrochemical parameters of the copper complexes supported the explanation of the catalytic behavior. A catalytic cycle similar for both reactions has been proposed. The results of density functional theory (DFT) free energy calculations for all five complexes and both catalytic reactions agree with the experimental results.
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Affiliation(s)
- Alan Mendieta
- Facultad de Química, Universidad Nacional Autónoma de México, Avenida Universidad 3000, CDMX 04510, México
| | - Juan Raúl Álvarez-Idaboy
- Facultad de Química, Universidad Nacional Autónoma de México, Avenida Universidad 3000, CDMX 04510, México
| | - Víctor M Ugalde-Saldívar
- Facultad de Química, Universidad Nacional Autónoma de México, Avenida Universidad 3000, CDMX 04510, México
| | - Marcos Flores-Álamo
- Facultad de Química, Universidad Nacional Autónoma de México, Avenida Universidad 3000, CDMX 04510, México
| | - Alfonso Armenta
- Facultad de Química, Universidad Nacional Autónoma de México, Avenida Universidad 3000, CDMX 04510, México
| | - Gerardo Ferrer-Sueta
- Laboratorio de Fisicoquímica Biológica, Instituto de Química Biológica, Facultad de Ciencias, Universidad de la República, Iguá 4225, Montevideo, UY 11400, Uruguay
| | - Laura Gasque
- Facultad de Química, Universidad Nacional Autónoma de México, Avenida Universidad 3000, CDMX 04510, México
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Wilson LA, Pedroso MM, Peralta RA, Gahan LR, Schenk G. Biomimetics for purple acid phosphatases: A historical perspective. J Inorg Biochem 2023; 238:112061. [PMID: 36371912 DOI: 10.1016/j.jinorgbio.2022.112061] [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: 09/27/2022] [Revised: 10/23/2022] [Accepted: 10/29/2022] [Indexed: 11/06/2022]
Abstract
Biomimetics hold potential for varied applications in biotechnology and medicine but have also attracted particular interest as benchmarks for the functional study of their more complex biological counterparts, e.g. metalloenzymes. While many of the synthetic systems adequately mimic some structural and functional aspects of their biological counterparts the catalytic efficiencies displayed are mostly far inferior due to the smaller size and the associated lower complexity. Nonetheless they play an important role in bioinorganic chemistry. Numerous examples of biologically inspired and informed artificial catalysts have been reported, designed to mimic a plethora of chemical transformations, and relevant examples are highlighted in reviews and scientific reports. Herein, we discuss biomimetics of the metallohydrolase purple acid phosphatase (PAP), examples of which have been used to showcase synergistic research advances for both the biological and synthetic systems. In particular, we focus on the seminal contribution of our colleague Prof. Ademir Neves, and his group, pioneers in the design and optimization of suitable ligands that mimic the active site of PAP.
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Affiliation(s)
- Liam A Wilson
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Marcelo M Pedroso
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Rosely A Peralta
- Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, SC 88040-900, Brazil
| | - Lawrence R Gahan
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Gerhard Schenk
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Queensland 4072, Australia; Sustainable Minerals Institute, The University of Queensland, Brisbane, Queensland 4072, Australia; Australian Institute of Bioengineering and Nanotechnology, The University of Queensland, Brisbane, Queensland 4072, Australia.
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Anjomshoa M, Amirheidari B. Nuclease-like metalloscissors: Biomimetic candidates for cancer and bacterial and viral infections therapy. Coord Chem Rev 2022; 458:214417. [PMID: 35153301 PMCID: PMC8816526 DOI: 10.1016/j.ccr.2022.214417] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Accepted: 01/09/2022] [Indexed: 12/25/2022]
Abstract
Despite the extensive and rapid discovery of modern drugs for treatment of cancer, microbial infections, and viral illnesses; these diseases are still among major global health concerns. To take inspiration from natural nucleases and also the therapeutic potential of metallopeptide antibiotics such as the bleomycin family, artificial metallonucleases with the ability of promoting DNA/RNA cleavage and eventually affecting cellular biological processes can be introduced as a new class of therapeutic candidates. Metal complexes can be considered as one of the main categories of artificial metalloscissors, which can prompt nucleic acid strand scission. Accordingly, biologists, inorganic chemists, and medicinal inorganic chemists worldwide have been designing, synthesizing and evaluating the biological properties of metal complexes as artificial metalloscissors. In this review, we try to highlight the recent studies conducted on the nuclease-like metalloscissors and their potential therapeutic applications. Under the light of the concurrent Covid-19 pandemic, the human need for new therapeutics was highlighted much more than ever before. The nuclease-like metalloscissors with the potential of RNA cleavage of invading viral pathogens hence deserve prime attention.
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Heinrich J, Bossak-Ahmad K, Riisom M, Haeri HH, Steel TR, Hergl V, Langhans A, Schattschneider C, Barrera J, Jamieson SMF, Stein M, Hinderberger D, Hartinger CG, Bal W, Kulak N. Incorporation of β-Alanine in Cu(II) ATCUN Peptide Complexes Increases ROS Levels, DNA Cleavage and Antiproliferative Activity*. Chemistry 2021; 27:18093-18102. [PMID: 34658072 PMCID: PMC9299640 DOI: 10.1002/chem.202102601] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2021] [Indexed: 12/30/2022]
Abstract
Redox‐active Cu(II) complexes are able to form reactive oxygen species (ROS) in the presence of oxygen and reducing agents. Recently, Faller et al. reported that ROS generation by Cu(II) ATCUN complexes is not as high as assumed for decades. High complex stability results in silencing of the Cu(II)/Cu(I) redox cycle and therefore leads to low ROS generation. In this work, we demonstrate that an exchange of the α‐amino acid Gly with the β‐amino acid β‐Ala at position 2 (Gly2→β‐Ala2) of the ATCUN motif reinstates ROS production (•OH and H2O2). Potentiometry, cyclic voltammetry, EPR spectroscopy and DFT simulations were utilized to explain the increased ROS generation of these β‐Ala2‐containing ATCUN complexes. We also observed enhanced oxidative cleavage activity towards plasmid DNA for β‐Ala2 compared to the Gly2 complexes. Modifications with positively charged Lys residues increased the DNA affinity through electrostatic interactions as determined by UV/VIS, fluorescence, and CD spectroscopy, and consequently led to a further increase in nuclease activity. A similar trend was observed regarding the cytotoxic activity of the complexes against several human cancer cell lines where β‐Ala2 peptide complexes had lower IC50 values compared to Gly2. The higher cytotoxicity could be attributed to an increased cellular uptake as determined by ICP‐MS measurements.
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Affiliation(s)
- Julian Heinrich
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Fabeckstr. 34/36, 14195, Berlin, Germany.,Institute of Chemistry, Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, 39106, Magdeburg, Germany
| | - Karolina Bossak-Ahmad
- Institute of Biochemistry and Biophysics, Polish Academy of Science, Pawińskiego 5a, 02-106, Warsaw, Poland
| | - Mie Riisom
- School of Chemical Sciences, University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand
| | - Haleh H Haeri
- Institute of Chemistry, Martin-Luther-Universität Halle-Wittenberg, Von-Danckelmann-Platz 4, 06120, Halle, Germany
| | - Tasha R Steel
- School of Chemical Sciences, University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand
| | - Vinja Hergl
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Fabeckstr. 34/36, 14195, Berlin, Germany
| | - Alexander Langhans
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Fabeckstr. 34/36, 14195, Berlin, Germany
| | - Corinna Schattschneider
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Fabeckstr. 34/36, 14195, Berlin, Germany
| | - Jannis Barrera
- Institute of Chemistry, Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, 39106, Magdeburg, Germany.,Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Strasse 2, 12489, Berlin, Germany
| | - Stephen M F Jamieson
- Auckland Cancer Society Research Centre, University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand
| | - Matthias Stein
- Max Planck Institute for Dynamics of Complex Technical Systems, Sandtorstrasse 1, 39106, Magdeburg, Germany
| | - Dariush Hinderberger
- Institute of Chemistry, Martin-Luther-Universität Halle-Wittenberg, Von-Danckelmann-Platz 4, 06120, Halle, Germany
| | - Christian G Hartinger
- School of Chemical Sciences, University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand
| | - Wojciech Bal
- Institute of Biochemistry and Biophysics, Polish Academy of Science, Pawińskiego 5a, 02-106, Warsaw, Poland
| | - Nora Kulak
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Fabeckstr. 34/36, 14195, Berlin, Germany.,Institute of Chemistry, Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, 39106, Magdeburg, Germany
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