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Mikhnavets L, Abashkin V, Khamitsevich H, Shcharbin D, Burko A, Krekoten N, Radziuk D. Ultrasonic Formation of Fe 3O 4-Reduced Graphene Oxide-Salicylic Acid Nanoparticles with Switchable Antioxidant Function. ACS Biomater Sci Eng 2022; 8:1181-1192. [PMID: 35226462 DOI: 10.1021/acsbiomaterials.1c01603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
We demonstrate a single-step ultrasonic in situ complexation of salicylic acid during the growth of Fe3O4-reduced graphene oxide nanoparticles (∼10 nm) to improve the antioxidant and antiproliferative effects of pristine drug molecules. These nanoparticles have a precisely defined electronic molecular structure with salicylic acid ligands specifically complexed to Fe(III)/Fe(II) sites, four orders of magnitude larger electric surface potential, and enzymatic activity modulated by ascorbic acid molecules. The diminishing efficiency of hydroxyl radicals by Fe3O4-rGO-SA nanoparticles is tenfold higher than that by pristine salicylic acid in the electro-Fenton process. The H+ production of these nanoparticles can be switched by the interaction with ascorbic acid ligands and cause the redox deactivation of iron or enhanced antioxidation, where rGO plays an important role in enhanced charge transfer catalysis. Fe3O4-rGO-SA nanoparticles are nontoxic to erythrocytes, i.e., human peripheral blood mononuclear cells, but surpassingly inhibit the growth of three cancer cell lines, HeLa, HepG2, and HT29, with respect to pristine salicylic acid molecules.
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Affiliation(s)
- Lubov Mikhnavets
- Laboratory of Integrated Micro- and Nanosystems, Belarusian State University of Informatics and Radioelectronics, P. Brovki str. 6, 220013 Minsk, Republic of Belarus
| | - Viktar Abashkin
- Institute of Biophysics and Cell Engineering of National Academy of Sciences of Belarus, Academicheskaya str. 27, 220072 Minsk, Republic of Belarus
| | - Hanna Khamitsevich
- Department of Microbiology, Belarusian State University, Kurchatava str. 10, 220030 Minsk, Republic of Belarus
| | - Dzmitry Shcharbin
- Institute of Biophysics and Cell Engineering of National Academy of Sciences of Belarus, Academicheskaya str. 27, 220072 Minsk, Republic of Belarus
| | - Aliaksandr Burko
- Laboratory of Applied Plasmonics, Belarusian State University of Informatics and Radioelectronics, P. Brovki str. 6, 220013 Minsk, Republic of Belarus
| | - Nina Krekoten
- Scientific-Technical Center "Belmicrosystems", Kazintsa str. 121 A, 220108 Minsk, Republic of Belarus
| | - Darya Radziuk
- Laboratory of Integrated Micro- and Nanosystems, Belarusian State University of Informatics and Radioelectronics, P. Brovki str. 6, 220013 Minsk, Republic of Belarus
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Castro J, Manrique E, Bravo M, Vilanova M, Benito A, Fontrodona X, Rodríguez M, Romero I. A family of manganese complexes containing heterocyclic-based ligands with cytotoxic properties. J Inorg Biochem 2018; 182:124-132. [PMID: 29459271 DOI: 10.1016/j.jinorgbio.2018.01.021] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Revised: 01/16/2018] [Accepted: 01/30/2018] [Indexed: 01/09/2023]
Abstract
We describe the synthesis of three new manganese (II) complexes containing the bidentate ligands 2-(1-methyl-3-pyrazolyl)pyridine (pypz-Me) and ethyl 2-(3-(pyridine-2-yl)-1H-pyrazol-1-yl)acetate (pypz-CH2COOEt), with formula [MnX2(pypz-Me)2] (X = Cl-1, CF3SO3-2) and [Mn(CF3SO3)2(pypz-CH2COOEt)2] 3. Complexes 1-3 have been characterized through analytical, spectroscopic and electrochemical techniques, as well as by monocrystal X-ray diffraction analysis. The complexes show a six-coordinated Mn(II) ion though different stereoisomers have been isolated for the three compounds. Complexes 1-3, together with the previously described compounds [MnCl2(pypz-H)2] 4, [Mn(CF3SO3)2(pypz-H)2] 5, [Mn(NO3)2(pypz-H)2] 6, [MnCl2(H2O)2(pypz-H)2] 7 (pypz-H = 2-(3-pyrazolyl)pyridine) and ([Mn(CF3SO3)2((-)-L)2] 8, ((-)-L = (-)-pinene[5,6]bipyridine), were tested in vitro for cytotoxic activity against NCI-H460 and OVCAR-8 cancer cell lines. The geometry of a specific compound does not seem to influence its activity in a significant extent. However, among the tested compounds those that display hydrophobic substituents on the pyrazole ring and triflate ions as labile ligands show the best antiproliferative properties. Specifically, compound 8 containing the pinene-bipyridine ligand presents an antiproliferative activity similar to that of cisplatin and higher than that of carboplatin, and displays selectivity for tumour cells. Its antiproliferative effect is due to the generation of ROS species that allow the compound to interact with DNA.
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Affiliation(s)
- Jessica Castro
- Laboratori d'Enginyeria de Proteïnes, Departament de Biologia, Facultat de Ciències, Universitat de Girona, Campus de Montilivi, C/Maria Aurèlia Capmany, 40, E-17003 Girona, Spain; Institut d'Investigació Biomèdica de Girona Dr. Josep Trueta, Girona, Spain
| | - Ester Manrique
- Departament de Química and Serveis Tècnics de Recerca, Universitat de Girona, Campus de Montilivi, C/Maria Aurèlia Capmany, 69, E-17003 Girona, Spain
| | - Marlon Bravo
- Laboratori d'Enginyeria de Proteïnes, Departament de Biologia, Facultat de Ciències, Universitat de Girona, Campus de Montilivi, C/Maria Aurèlia Capmany, 40, E-17003 Girona, Spain; Institut d'Investigació Biomèdica de Girona Dr. Josep Trueta, Girona, Spain
| | - Maria Vilanova
- Laboratori d'Enginyeria de Proteïnes, Departament de Biologia, Facultat de Ciències, Universitat de Girona, Campus de Montilivi, C/Maria Aurèlia Capmany, 40, E-17003 Girona, Spain; Institut d'Investigació Biomèdica de Girona Dr. Josep Trueta, Girona, Spain.
| | - Antoni Benito
- Laboratori d'Enginyeria de Proteïnes, Departament de Biologia, Facultat de Ciències, Universitat de Girona, Campus de Montilivi, C/Maria Aurèlia Capmany, 40, E-17003 Girona, Spain; Institut d'Investigació Biomèdica de Girona Dr. Josep Trueta, Girona, Spain
| | - Xavier Fontrodona
- Departament de Química and Serveis Tècnics de Recerca, Universitat de Girona, Campus de Montilivi, C/Maria Aurèlia Capmany, 69, E-17003 Girona, Spain
| | - Montserrat Rodríguez
- Departament de Química and Serveis Tècnics de Recerca, Universitat de Girona, Campus de Montilivi, C/Maria Aurèlia Capmany, 69, E-17003 Girona, Spain.
| | - Isabel Romero
- Departament de Química and Serveis Tècnics de Recerca, Universitat de Girona, Campus de Montilivi, C/Maria Aurèlia Capmany, 69, E-17003 Girona, Spain.
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New iminodibenzyl derivatives with anti-leishmanial activity. J Inorg Biochem 2017; 172:9-15. [PMID: 28414928 DOI: 10.1016/j.jinorgbio.2017.04.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Revised: 02/06/2017] [Accepted: 04/02/2017] [Indexed: 01/27/2023]
Abstract
Leishmaniasis is an infection caused by protozoa of the genus Leishmania and transmitted by sandflies. Current treatments are expensive and time-consuming, involving Sb(V)-based compounds, lipossomal amphotericin B and miltefosine. Recent studies suggest that inhibition of trypanothione reductase (TR) could be a specific target in the development of new drugs because it is essential and exclusive to trypanosomatids. This work presents the synthesis and characterization of new iminodibenzyl derivatives (dado) with ethylenediamine (ea), ethanolamine (en) and diethylenetriamine (dien) and their copper(II) complexes. Computational methods indicated that the complexes were highly lipophilic. Pro-oxidant activity assays by oxidation of the dihydrorhodamine (DHR) fluorimetric probe showed that [Cu(dado-ea)]2+ has the highest rate of oxidation, independent of H2O2 concentration. The toxicity to L. amazonensis promastigotes and RAW 264,7 macrophages was assessed, showing that dado-en was the most active new compound. Complexation to copper did not have an appreciable effect on the toxicity of the compounds.
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Wiśniewska J, Wrzeszcz G. A Mechanistic Study on the Oxidative Degradation of Dibenzazepine Derivatives by Manganese(III) Complexes in Acidic Sulfate Media. INT J CHEM KINET 2015. [DOI: 10.1002/kin.20935] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Joanna Wiśniewska
- Department of Chemistry; Nicolaus Copernicus University; Gagarina 7 87-100 Toruń Poland
| | - Grzegorz Wrzeszcz
- Department of Chemistry; Nicolaus Copernicus University; Gagarina 7 87-100 Toruń Poland
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Arndt A, Borella MI, Espósito BP. Toxicity of manganese metallodrugs toward Danio rerio. CHEMOSPHERE 2014; 96:46-50. [PMID: 23916747 DOI: 10.1016/j.chemosphere.2013.07.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2012] [Revised: 07/04/2013] [Accepted: 07/05/2013] [Indexed: 05/25/2023]
Abstract
Manganese is an essential metal which can be neurotoxic in some instances. As Mn-based metallodrugs are ever more prevalent in clinical practice, concern regarding the toxic effects of Mn discharges to water bodies on the biota prompted us to study the physicochemical parameters of these complexes and to assess their acute toxicity toward adult Danio rerio individuals, particularly in terms of brain tissue damage. Our results show that the Mn(III)-salen acetate complex EUK108 is toxic, which can be rationalized in terms of its lipophilicity, stability and redox activity.
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Affiliation(s)
- Anderson Arndt
- Instituto de Química, Universidade de São Paulo, Av. Lineu Prestes 748, São Paulo, Brazil
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