1
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Tilehkan A, Arvand M. Study on the electrochemical and spectroscopic characteristics of holmium ion and its interaction with DNA. Sci Rep 2024; 14:20383. [PMID: 39223199 PMCID: PMC11369137 DOI: 10.1038/s41598-024-71412-4] [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: 12/21/2023] [Accepted: 08/27/2024] [Indexed: 09/04/2024] Open
Abstract
Metal ion-DNA interactions play a crucial role in modulating the structure and function of genetic material in the natural environment. In this study, we report on the favorable electrochemical activity of holmium(III) (Ho3+) on a glassy carbon electrode (GCE) and its interaction with double-stranded DNA. The interaction between DNA and Ho3+ was investigated for the first time using cyclic voltammetry and differential pulse voltammetry. The electrochemical behavior of Ho3+ ions on a GCE exhibited a reversible electron transfer process, indicative of its redox activity. A linear correlation between the peak current and the square root of the scan rate was observed, suggesting a diffusion-controlled kinetic regime for the electrochemical process. Additionally, fluorescence and absorption spectroscopy were employed to confirm the binding of Ho3+ to DNA. Our findings demonstrate that, at pH 7.2, specific DNA bases and phosphate groups can interact with Ho3+ ions. Moreover, electrochemical measurements suggest that Ho3+ ions bind to DNA via a groove binding mode, with a calculated binding ratio of 1:1 between Ho3+ and DNA. Notably, under optimal conditions, an increase in the amount of DNA leads to a significant reduction in the current intensity of Ho3+ ions.
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Affiliation(s)
- Ali Tilehkan
- Electroanalytical Chemistry Laboratory, Faculty of Chemistry, University of Guilan, Namjoo Street, P.O. Box: 1914-41335, Rasht, Iran
| | - Majid Arvand
- Electroanalytical Chemistry Laboratory, Faculty of Chemistry, University of Guilan, Namjoo Street, P.O. Box: 1914-41335, Rasht, Iran.
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2
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Kontoghiorghes GJ. The Importance and Essentiality of Natural and Synthetic Chelators in Medicine: Increased Prospects for the Effective Treatment of Iron Overload and Iron Deficiency. Int J Mol Sci 2024; 25:4654. [PMID: 38731873 PMCID: PMC11083551 DOI: 10.3390/ijms25094654] [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: 04/02/2024] [Revised: 04/19/2024] [Accepted: 04/22/2024] [Indexed: 05/13/2024] Open
Abstract
The supply and control of iron is essential for all cells and vital for many physiological processes. All functions and activities of iron are expressed in conjunction with iron-binding molecules. For example, natural chelators such as transferrin and chelator-iron complexes such as haem play major roles in iron metabolism and human physiology. Similarly, the mainstay treatments of the most common diseases of iron metabolism, namely iron deficiency anaemia and iron overload, involve many iron-chelator complexes and the iron-chelating drugs deferiprone (L1), deferoxamine (DF) and deferasirox. Endogenous chelators such as citric acid and glutathione and exogenous chelators such as ascorbic acid also play important roles in iron metabolism and iron homeostasis. Recent advances in the treatment of iron deficiency anaemia with effective iron complexes such as the ferric iron tri-maltol complex (feraccru or accrufer) and the effective treatment of transfusional iron overload using L1 and L1/DF combinations have decreased associated mortality and morbidity and also improved the quality of life of millions of patients. Many other chelating drugs such as ciclopirox, dexrazoxane and EDTA are used daily by millions of patients in other diseases. Similarly, many other drugs or their metabolites with iron-chelation capacity such as hydroxyurea, tetracyclines, anthracyclines and aspirin, as well as dietary molecules such as gallic acid, caffeic acid, quercetin, ellagic acid, maltol and many other phytochelators, are known to interact with iron and affect iron metabolism and related diseases. Different interactions are also observed in the presence of essential, xenobiotic, diagnostic and theranostic metal ions competing with iron. Clinical trials using L1 in Parkinson's, Alzheimer's and other neurodegenerative diseases, as well as HIV and other infections, cancer, diabetic nephropathy and anaemia of inflammation, highlight the importance of chelation therapy in many other clinical conditions. The proposed use of iron chelators for modulating ferroptosis signifies a new era in the design of new therapeutic chelation strategies in many other diseases. The introduction of artificial intelligence guidance for optimal chelation therapeutic outcomes in personalised medicine is expected to increase further the impact of chelation in medicine, as well as the survival and quality of life of millions of patients with iron metabolic disorders and also other diseases.
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Affiliation(s)
- George J Kontoghiorghes
- Postgraduate Research Institute of Science, Technology, Environment and Medicine, Limassol 3021, Cyprus
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3
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Cini E, Crisponi G, Fantasia A, Cappai R, Siciliano S, Florio GD, Nurchi VM, Corsini M. Multipurpose Iron-Chelating Ligands Inspired by Bioavailable Molecules. Biomolecules 2024; 14:92. [PMID: 38254692 PMCID: PMC10813012 DOI: 10.3390/biom14010092] [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: 12/18/2023] [Revised: 01/02/2024] [Accepted: 01/04/2024] [Indexed: 01/24/2024] Open
Abstract
Because of their capacity to bind metals, metal chelators are primarily employed for therapeutic purposes, but they can also find applications as colorimetric reagents and cleaning solutions as well as in soil remediation, electroplating, waste treatment, and so on. For instance, iron-chelation therapy, which is used to treat iron-overload disorders, involves removing excess iron from the blood through the use of particular molecules, like deferoxamine, that have the ability to chelate the metal. The creation of bioinspired and biodegradable chelating agents is a crucial objective that draws inspiration from natural products. In this context, starting from bioavailable molecules such as maltol and pyrogallol, new molecules have been synthetized and characterized by potentiometry, infrared spectroscopy and cyclic voltammetry. Finally, the ability of these to bind iron has been investigated, and the stability constants of ferric complexes are measured using spectrophotometry. These compounds offer intriguing scaffolds for an innovative class of versatile, multipurpose chelating agents.
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Affiliation(s)
- Elena Cini
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via Aldo Moro 2, 53100 Siena, Italy; (E.C.); (S.S.); (G.D.F.)
| | - Guido Crisponi
- Dipartimento di Scienze della Vita e dell’Ambiente, Cittadella Universitaria, 09042 Monserrato-Cagliari, Italy; (G.C.); (A.F.)
| | - Alessandra Fantasia
- Dipartimento di Scienze della Vita e dell’Ambiente, Cittadella Universitaria, 09042 Monserrato-Cagliari, Italy; (G.C.); (A.F.)
| | - Rosita Cappai
- Dipartimento di Scienze Chimiche, Fisiche, Matematiche e Naturali, University of Sassari, Via Vienna 2, 07100 Sassari, Italy;
| | - Sofia Siciliano
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via Aldo Moro 2, 53100 Siena, Italy; (E.C.); (S.S.); (G.D.F.)
| | - Giuseppe Di Florio
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via Aldo Moro 2, 53100 Siena, Italy; (E.C.); (S.S.); (G.D.F.)
| | - Valeria M. Nurchi
- Dipartimento di Scienze della Vita e dell’Ambiente, Cittadella Universitaria, 09042 Monserrato-Cagliari, Italy; (G.C.); (A.F.)
| | - Maddalena Corsini
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via Aldo Moro 2, 53100 Siena, Italy; (E.C.); (S.S.); (G.D.F.)
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4
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Beaumet M, Lazinski LM, Maresca M, Haudecoeur R. Catechol-mimicking transition-state analogues as non-oxidizable inhibitors of tyrosinases. Eur J Med Chem 2023; 259:115672. [PMID: 37487307 DOI: 10.1016/j.ejmech.2023.115672] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 07/11/2023] [Accepted: 07/19/2023] [Indexed: 07/26/2023]
Abstract
Tyrosinases are copper-containing metalloenzymes involved in several processes in both mammals, insects, bacteria, fungi and plants. Their phenol oxidation properties are especially responsible for human melanogenesis, potentially leading to abnormal pigmentation, and for postharvest vegetable tissue browning. Thus, targeting tyrosinases attracts interest for applications both in dermocosmetic and agrofood fields. However, a large part of the literature about tyrosinase inhibitors is dedicated to the report of copper-interacting phenolic compounds, that are more likely alternative substrates leading to undesirable toxic quinones production. To circumvent this issue, the use of catechol-mimicking copper-chelating groups that are analogues of the tyrosinase oxidation transition state appears as a valuable strategy. Relying on several non-oxidizable pyridinone, pyrone or tropolone moieties, innovative inhibitors were developed, especially within the past decade, and the best reported analogues reached IC50 values in the nanomolar range. Herein, we review the design, the activity against several tyrosinases, and the proposed binding modes of reported catechol-mimicking, non-oxidizable molecules, in light of recent structural data.
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Affiliation(s)
- Morane Beaumet
- Univ. Grenoble Alpes, CNRS 5063, DPM, 38000, Grenoble, France
| | | | - Marc Maresca
- Aix Marseille Univ., CNRS, Centrale Marseille, iSm2, 13013, Marseille, France
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5
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Steparuk EV, Meshcheryakova EA, Viktorova VV, Ulitko MV, Obydennov DL, Sosnovskikh VY. Oxidative Ring-Opening Transformation of 5-Acyl-4-pyrones as an Approach for the Tunable Synthesis of Hydroxylated Pyrones and Furans. J Org Chem 2023; 88:11590-11602. [PMID: 37504952 DOI: 10.1021/acs.joc.3c00907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
A selective and tunable approach for oxidation of 4-pyrones has been developed via ring-opening transformations leading to various hydroxylated oxaheterocycles. The first step of the strategy includes the base-catalyzed epoxidation of 5-acyl-4-pyrones in the presence of hydrogen peroxide for the effective synthesis of pyrone epoxides in high yields. The epoxides bearing the CO2Et group are reactive molecules that can undergo both pyrone and oxirane ring-opening via deformylation to produce hydroxylated 2-pyrones or 4-pyrones. The acid-promoted transformation led to 3-hydroxy-4-pyrones (24-76% yields), whereas the K2CO3-catalyzed ring-opening process of 2-carbethoxy-4-pyrone epoxides proceeded as an attack of alcohol at the C-3 position bearing the CO2Et group to give functionalized 6-acyl-5-hydroxy-2-pyrones (27-87% yields). The base-catalyzed reaction of 2-aryl-4-pyrone epoxides was followed by ring contraction and the dearoylation process to produce 3-hydroxyfuran-2-carbaldehydes in 42-80% yields. The transformation of 3-aroylchromone epoxides led to flavonols and 3-hydroxybenzofuran-2-carbaldehyde in the acidic and basic conditions, respectively. The prepared hydroxylated heterocycles demonstrated high reactivity for further transformations and low cytotoxicity and are promising fluorophores or UV filters.
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Affiliation(s)
- Elena V Steparuk
- Institute of Natural Sciences and Mathematics, Ural Federal University, 51 Lenina Ave., 620000 Ekaterinburg, Russian Federation
| | - Ekaterina A Meshcheryakova
- Institute of Natural Sciences and Mathematics, Ural Federal University, 51 Lenina Ave., 620000 Ekaterinburg, Russian Federation
| | - Viktoria V Viktorova
- Institute of Natural Sciences and Mathematics, Ural Federal University, 51 Lenina Ave., 620000 Ekaterinburg, Russian Federation
| | - Maria V Ulitko
- Institute of Natural Sciences and Mathematics, Ural Federal University, 51 Lenina Ave., 620000 Ekaterinburg, Russian Federation
| | - Dmitrii L Obydennov
- Institute of Natural Sciences and Mathematics, Ural Federal University, 51 Lenina Ave., 620000 Ekaterinburg, Russian Federation
| | - Vyacheslav Y Sosnovskikh
- Institute of Natural Sciences and Mathematics, Ural Federal University, 51 Lenina Ave., 620000 Ekaterinburg, Russian Federation
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6
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Li H, Zhang Q, Xue X, Zhang J, Wang S, Zhang J, Lin L, Niu Q. Lnc001209 Participates in aluminium-induced apoptosis of PC12 cells by regulating PI3K-AKT-mTOR signalling pathway. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 259:115062. [PMID: 37229874 DOI: 10.1016/j.ecoenv.2023.115062] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 05/07/2023] [Accepted: 05/21/2023] [Indexed: 05/27/2023]
Abstract
Aluminium (Al) is a common environmental neurotoxin, but the molecular mechanism underlying its toxic effects remains unclear. Many studies have shown that aluminium exposure leads to increased neuronal apoptosis. This study aimed to investigate the mechanisms and signalling pathways involved in aluminium exposure-induced neuronal apoptosis. The results showed a decrease in the number of PC12 cells and changes in cell morphology in the aluminium maltol exposure group. The viability of PC12 cells decreased gradually with increasing of exposure doses, and the apoptosis rate increased. The expression of Lnc001209 decreased gradually with an increase in the aluminium exposure dose. After transfection of Lnc001209 siRNA in aluminium-exposed PC12 cells, the protein expression levels of p-Akt Ser473, p-Akt Thr308, p-P85 Tyr467, p-mTOR Ser2448 and CD36 were increased. RNA pull-down MS showed that Lnc001209 interacts with the CD36 protein. Expression of the CD36 protein was increased in PC12 cells exposed to aluminium. The results of the CD36 intervention experiment showed that the protein expression levels of p-Akt Ser473, p-Akt Thr308, p-P85 Tyr467, and p-mTOR Ser2448 likely increased after CD36 overexpression. In addition, the phosphorylation level of AKT had the most significant increase. The enhancement of p-Akt activity promotes neuronal apoptosis.
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Affiliation(s)
- Huan Li
- Department of Occupational Health, School of Public Health, Jining Medical University, Jining 272067, Shandong, China; Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan 030001, Shanxi, China
| | - Qinli Zhang
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan 030001, Shanxi, China; Key Lab of Environmental Hazard and Health of Shanxi Province, Shanxi Medical University, Taiyuan 030001, Shanxi, China; Key Lab of Cellular Physiology of Education Ministry, Shanxi Medical University, Taiyuan 030001, Shanxi, China
| | - Xingli Xue
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan 030001, Shanxi, China
| | - Jingsi Zhang
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan 030001, Shanxi, China
| | - Shanshan Wang
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan 030001, Shanxi, China
| | - Jing Zhang
- Department of Occupational Health, School of Public Health, Jining Medical University, Jining 272067, Shandong, China
| | - Li Lin
- Department of Occupational Health, School of Public Health, Jining Medical University, Jining 272067, Shandong, China
| | - Qiao Niu
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan 030001, Shanxi, China; Department of Occupational Health, School of Public Health, Xuzhou Medical University, Xuzhou 221000, Jiangsu, China; Key Lab of Environmental Hazard and Health of Shanxi Province, Shanxi Medical University, Taiyuan 030001, Shanxi, China; Key Lab of Cellular Physiology of Education Ministry, Shanxi Medical University, Taiyuan 030001, Shanxi, China.
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7
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Kontoghiorghes GJ. Deferiprone and Iron-Maltol: Forty Years since Their Discovery and Insights into Their Drug Design, Development, Clinical Use and Future Prospects. Int J Mol Sci 2023; 24:ijms24054970. [PMID: 36902402 PMCID: PMC10002863 DOI: 10.3390/ijms24054970] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Revised: 02/24/2023] [Accepted: 03/02/2023] [Indexed: 03/08/2023] Open
Abstract
The historical insights and background of the discovery, development and clinical use of deferiprone (L1) and the maltol-iron complex, which were discovered over 40 years ago, highlight the difficulties, complexities and efforts in general orphan drug development programs originating from academic centers. Deferiprone is widely used for the removal of excess iron in the treatment of iron overload diseases, but also in many other diseases associated with iron toxicity, as well as the modulation of iron metabolism pathways. The maltol-iron complex is a recently approved drug used for increasing iron intake in the treatment of iron deficiency anemia, a condition affecting one-third to one-quarter of the world's population. Detailed insights into different aspects of drug development associated with L1 and the maltol-iron complex are revealed, including theoretical concepts of invention; drug discovery; new chemical synthesis; in vitro, in vivo and clinical screening; toxicology; pharmacology; and the optimization of dose protocols. The prospects of the application of these two drugs in many other diseases are discussed under the light of competing drugs from other academic and commercial centers and also different regulatory authorities. The underlying scientific and other strategies, as well as the many limitations in the present global scene of pharmaceuticals, are also highlighted, with an emphasis on the priorities for orphan drug and emergency medicine development, including the roles of the academic scientific community, pharmaceutical companies and patient organizations.
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Affiliation(s)
- George J Kontoghiorghes
- Postgraduate Research Institute of Science, Technology, Environment and Medicine, Limassol 3021, Cyprus
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8
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Mitra S, Sarkar R, Chakrabarty A, Mukherjee S. Hydroxy-directed iridium-catalyzed enantioselective formal β-C(sp 2)-H allylic alkylation of α,β-unsaturated carbonyls. Chem Sci 2022; 13:12491-12497. [PMID: 36382287 PMCID: PMC9629034 DOI: 10.1039/d2sc03966d] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 10/12/2022] [Indexed: 02/12/2024] Open
Abstract
Hydroxy-directed iridium-catalyzed enantioselective formal β-C(sp2)-H allylic alkylation of kojic acid and structurally related α,β-unsaturated carbonyl compounds is developed. This reaction, catalyzed by an Ir(i)/(P,olefin) complex, utilizes the nucleophilic character of α-hydroxy α,β-unsaturated carbonyls, to introduce an allyl group at its β-position in a branched-selective manner in good to excellent yield with uniformly high enantioselectivity (up to >99.9 : 0.1 er). To the best of our knowledge, this report represents the first example of the use of kojic acid in a transition metal catalyzed highly enantioselective transformation.
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Affiliation(s)
- Sankash Mitra
- Department of Organic Chemistry, Indian Institute of Science Bangalore 560 012 India +91-80-2360-0529 +91-80-2293-2850
| | - Rahul Sarkar
- Department of Organic Chemistry, Indian Institute of Science Bangalore 560 012 India +91-80-2360-0529 +91-80-2293-2850
| | - Aditya Chakrabarty
- Department of Organic Chemistry, Indian Institute of Science Bangalore 560 012 India +91-80-2360-0529 +91-80-2293-2850
| | - Santanu Mukherjee
- Department of Organic Chemistry, Indian Institute of Science Bangalore 560 012 India +91-80-2360-0529 +91-80-2293-2850
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9
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Shah RP, Bharate SS. Analytical Methods for Furanochromone Natural Product, Khellin and Its Inspired Drug Candidates, Amiodarone and Sodium Cromoglycate. Crit Rev Anal Chem 2022; 54:691-706. [PMID: 35776740 DOI: 10.1080/10408347.2022.2094198] [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] [Indexed: 10/17/2022]
Abstract
Khellin is the key furanocoumarin of Ammi visnaga L. (Lam.) that exhibits various biological properties. This unique natural product has inspired the discovery of two first-in-class drugs, amiodarone and sodium cromoglycate. A wide range of analytical methods were generated while translating khellin scaffold into clinically used drugs; however, they have never been reviewed and critically assessed. The present review aims to review and evaluate the analytical techniques for the natural products, khellin, visnagin, and their inspired drugs, amiodarone and sodium cromoglycate. High-performance liquid chromatography (HPLC) is the extensively used technique in most analytical methods reported for these compounds; however, other techniques including the fluorimetry, luminescence spectrophotometry, potentiometry, voltammetry, FT-Raman spectroscopy, and ELISA were also employed. The review will be helpful for further basic and translational research on furanochromone and related scaffolds.
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Affiliation(s)
- Raj P Shah
- Shobhaben Pratapbhai Patel School of Pharmacy & Technology Management, SVKM's NMIMS, V.L. Mehta Road, Vile Parle (W), Mumbai 400056, India
| | - Sonali S Bharate
- Shobhaben Pratapbhai Patel School of Pharmacy & Technology Management, SVKM's NMIMS, V.L. Mehta Road, Vile Parle (W), Mumbai 400056, India
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Ashooriha M, Ahmadi R, Ahadi H, Emami S. Application of kojic acid scaffold in the design of non-tyrosinase enzyme inhibitors. Chem Biol Drug Des 2022; 100:290-303. [PMID: 35555863 DOI: 10.1111/cbdd.14065] [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: 02/18/2022] [Revised: 05/05/2022] [Accepted: 05/09/2022] [Indexed: 11/30/2022]
Abstract
Kojic acid (KA) is a hydroxypyranone natural metabolite mainly known as tyrosinase inhibitor. Currently, this compound is used as a whitening agent in cosmetics and as an anti-browning agent in food industry. Given the easy-manipulation in different positions of the KA molecule, many investigations have been carried out to find new tyrosinase inhibitors derived from KA. Beside anti-tyrosinase activity, many KA-based compounds have been designed for targeting other enzymes including human neutrophil elastase, catechol-O-methyltransferase, matrix metalloproteinases, monoamine oxidase, human lactate dehydrogenase, endonucleases, D-amino acid oxidase, and receptors such as histamine H3 and apelin (APJ) receptors. This review could help biochemists and medicinal chemists in designing diverse KA-derived enzyme inhibitors.
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Affiliation(s)
- Morteza Ashooriha
- Department of Medicinal Chemistry and Pharmaceutical Sciences Research Center, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
| | - Reza Ahmadi
- Department of Medicinal Chemistry and Pharmaceutical Sciences Research Center, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
| | - Hamideh Ahadi
- Department of Medicinal Chemistry and Pharmaceutical Sciences Research Center, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
| | - Saeed Emami
- Department of Medicinal Chemistry and Pharmaceutical Sciences Research Center, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
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11
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A family of amphiphilic dioxidovanadium(V) hydrazone complexes as potent carbonic anhydrase inhibitors along with anti-diabetic and cytotoxic activities. Biometals 2022; 35:499-517. [PMID: 35355153 DOI: 10.1007/s10534-022-00384-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 03/07/2022] [Indexed: 12/24/2022]
Abstract
A family of dioxidovanadium(V) complexes (1-4) of the type [Na(H2O)x]+[VVO2(HL1-4)]- (x = 4, 4.5 and 7) where HL2- represents the dianionic form of 2-hydroxybenzoylhydrazone of 2-hydroxyacetophenone (H2L1, complex 1), 2-hydroxy-5-methylacetophenone (H2L2, complex 2), 2-hydroxy-5-methoxyacetophenone (H2L3, complex 3) and 2-hydroxy-5-chloroacetophenone (H2L4, complex 4), have been synthesized and characterized by analytical and spectral methods. These complexes exhibited the potential abilities to suppress the erythrocytes carbonic anhydrase enzymatic activity in type 1 and type 2 diabetic patients (in vitro), promising antidiabetic activity against T2 diabetic mice (in vivo). They also exhibited significant cytotoxic activity against cervical cancer (SiHa) cells (in vitro) as the IC50 value of complexes 1, 2 and 4 is substantially lower than the value found for cisplatin while that of 3 is comparable and follow the order: 4 < 1 < 2 < 3 and can kill the cells by apoptosis via the generation of reactive oxygen species (ROS). The complexes are soluble both in water and octanol media and also non-toxic at working concentrations. The antidiabetic activity of these four complexes follows the order: 4 > 2 > 1 > 3 while both the carbonic anhydrase and cytotoxic activity follow the order: 4 > 1 > 2 > 3 suggesting that complex 4, containing electron withdrawing Cl atom is the most reactive while 3 with electron donating OCH3 group is the least reactive species. The molecular docking study on hCA-I and hCA-II demonstrates that complexes interact via hydrogen bonding as well as different types of π-stacking.
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12
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Kontoghiorghes GJ, Kolnagou A, Demetriou T, Neocleous M, Kontoghiorghe CN. New Era in the Treatment of Iron Deficiency Anaemia Using Trimaltol Iron and Other Lipophilic Iron Chelator Complexes: Historical Perspectives of Discovery and Future Applications. Int J Mol Sci 2021; 22:ijms22115546. [PMID: 34074010 PMCID: PMC8197347 DOI: 10.3390/ijms22115546] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 05/08/2021] [Accepted: 05/18/2021] [Indexed: 12/11/2022] Open
Abstract
The trimaltol iron complex (International Non-proprietary Name: ferric maltol) was originally designed, synthesised, and screened in vitro and in vivo in 1980–1981 by Kontoghiorghes G.J. following his discovery of the novel alpha-ketohydroxyheteroaromatic (KHP) class of iron chelators (1978–1981), which were intended for clinical use, including the treatment of iron deficiency anaemia (IDA). Iron deficiency anaemia is a global health problem affecting about one-third of the world’s population. Many (and different) ferrous and ferric iron complex formulations are widely available and sold worldwide over the counter for the treatment of IDA. Almost all such complexes suffer from instability in the acidic environment of the stomach and competition from other dietary molecules or drugs. Natural and synthetic lipophilic KHP chelators, including maltol, have been shown in in vitro and in vivo studies to form stable iron complexes, to transfer iron across cell membranes, and to increase iron absorption in animals. Trimaltol iron, sold as Feraccru or Accrufer, was recently approved for clinical use in IDA patients in many countries, including the USA and in EU countries, and was shown to be effective and safe, with a better therapeutic index in comparison to other iron formulations. Similar properties of increased iron absorption were also shown by lipophilic iron complexes of 8-hydroxyquinoline, tropolone, 2-hydroxy-4-methoxypyridine-1-oxide, and related analogues. The interactions of the KHP iron complexes with natural chelators, drugs, metal ions, proteins, and other molecules appear to affect the pharmacological and metabolic effects of both iron and the KHP chelators. A new era in the treatment of IDA and other possible clinical applications, such as theranostic and anticancer formulations and metal radiotracers in diagnostic medicine, are envisaged from the introduction of maltol, KHP, and similar lipophilic chelators.
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13
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He C, Zhao X, Li H, Wang F, Zhang J, Wang Y, Han Y, Yuan C, Niu Q. Regulation of mGluR1 on the Expression of PKC and NMDAR in Aluminum-Exposed PC12 Cells. Neurotox Res 2021; 39:634-644. [PMID: 33464538 DOI: 10.1007/s12640-020-00319-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 11/16/2020] [Accepted: 11/30/2020] [Indexed: 12/12/2022]
Abstract
Aluminum demonstrates clear neurotoxicity and can cause Alzheimer's disease (AD)-like symptoms, including cognitive impairment. One toxic effect of aluminum is a decrease in synaptic plasticity, but the specific mechanism remains unclear. In this study, PC12 cells were treated with Al(mal)3 to construct a toxic cell model. (S)-3,5-Dihydroxyphenylglycine (DHPG), α-methyl-4-carboxyphenylglycine (MCPG), and mGluR1-siRNA were used to interfere with the expression of metabotropic glutamate receptor subtype 1 (mGluR1). Polymerase chain reaction and western blotting were used to investigate the expression of mGluR1, protein kinase C (PKC), and N-methyl-D-aspartate receptor (NMDAR) subunits. ELISA was used to detect PKC enzyme activity. In PC12 cells, mRNA and protein expressions of PKC and NMDAR subunits were inhibited by Al(mal)3. Aluminum may further regulate the expression of NMDAR1 and NMDAR2B through mGluR1 to regulate PKC enzyme activity, thereby affecting learning and memory functions. Furthermore, the results implied that the mGluR1-PKC-NMDAR signaling pathway may predominately involve positive regulation. These findings provide new targets for studying the neurotoxic mechanism of aluminum.
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Affiliation(s)
- Chanting He
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, 030001, Shanxi, China.,Key Lab of Environmental Hazard & Health of Shanxi Province, Shanxi Medical University, Taiyuan, 030001, Shanxi, China.,Key Lab of Cellular Physiology of Education Ministry, Shanxi Medical University, Taiyuan, 030001, Shanxi, China.,Department of Anatomy, Shanxi Medical University, Taiyuan, 030001, Shanxi, China
| | - Xiaoyan Zhao
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, 030001, Shanxi, China
| | - Huan Li
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, 030001, Shanxi, China
| | - Fei Wang
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, 030001, Shanxi, China
| | - Jingsi Zhang
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, 030001, Shanxi, China
| | - Yanni Wang
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, 030001, Shanxi, China
| | - Yingchao Han
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, 030001, Shanxi, China
| | - Chunman Yuan
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, 030001, Shanxi, China
| | - Qiao Niu
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, 030001, Shanxi, China. .,Key Lab of Environmental Hazard & Health of Shanxi Province, Shanxi Medical University, Taiyuan, 030001, Shanxi, China. .,Key Lab of Cellular Physiology of Education Ministry, Shanxi Medical University, Taiyuan, 030001, Shanxi, China.
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14
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Kinetics of oxidation of antidiabetic drug metformin hydrochloride by vanadium(V) in acidic and micellar medium. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-03664-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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15
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16
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Patel A, Asik D, Snyder EM, Dilillo AE, Cullen PJ, Morrow JR. Binding and Release of FeIII Complexes from Glucan Particles for the Delivery of T 1 MRI Contrast Agents. ChemMedChem 2020; 15:1050-1057. [PMID: 32168421 DOI: 10.1002/cmdc.202000003] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Revised: 03/10/2020] [Indexed: 12/15/2022]
Abstract
Yeast-derived β-glucan particles (GPs) are a class of microcarriers under development for the delivery of drugs and imaging agents to immune-system cells for theranostic approaches. However, the encapsulation of hydrophilic imaging agents in the porous GPs is challenging. Here, we show that the unique coordination chemistry of FeIII -based macrocyclic T1 MRI contrast agents permits facile encapsulation in GPs. Remarkably, GPs labeled with the simple FeIII complexes are stable under physiologically relevant conditions, despite the absence of amphiphilic groups. In contrast to the free FeIII coordination complex, the labeled FeIII -GPs have lowered T1 relaxivity and act as a silenced form of the contrast agent. Addition of a fluorescent tag to the FeIII complex produces a bimodal agent to further enable tracking of the nanoparticles and to monitor release. Treatment of the iron-labeled GPs with a maltol chelator or with mildly acidic conditions releases the intact iron complex and restores enhanced T1 relaxation of the water protons.
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Affiliation(s)
- Akanksha Patel
- Department of Chemistry, University at Buffalo, State University of New York, Amherst, NY 14260, USA
| | - Didar Asik
- Department of Chemistry, University at Buffalo, State University of New York, Amherst, NY 14260, USA
| | - Eric M Snyder
- Department of Chemistry, University at Buffalo, State University of New York, Amherst, NY 14260, USA
| | - Alexandra E Dilillo
- Department of Chemistry, University at Buffalo, State University of New York, Amherst, NY 14260, USA
| | - Paul J Cullen
- Department of Biology, University at Buffalo, State University of New York, Amherst, NY 14260, USA
| | - Janet R Morrow
- Department of Chemistry, University at Buffalo, State University of New York, Amherst, NY 14260, USA
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Antioxidant Properties of Lapachol and Its Derivatives and Their Ability to Chelate Iron (II) Cation: DFT and QTAIM Studies. Bioinorg Chem Appl 2020; 2020:2103239. [PMID: 32318101 PMCID: PMC7150675 DOI: 10.1155/2020/2103239] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 06/09/2019] [Accepted: 08/21/2019] [Indexed: 01/06/2023] Open
Abstract
The elucidation of the complexation of lapachol and its derivatives to Fe2+ cation has been done using the density functional theory (DFT). This complexation has been limited to bidentate and tridentate to Fe2+ cation. Geometry optimizations have been implemented in gas and solution phase (water, acetonitrile, chlorobenzene, benzene, and toluene) for ligands at B3LYP/6-311++G (d,p) level of theory using B3LYP/6-31+G(d,p) optimized data as starting point. But, the geometrical optimizations in solution phase of the 22 complexes analyzed of lapachol and its derivatives to Fe2+ cation were restricted to acetonitrile and benzene. The complexation energy and the metal ion affinity (MIA) have also been calculated using the B3LYP method. The results obtained indicated a proportionality between the MIA values and the retained charge on Fe2+ cation for k2-(O1,O2) modes. But, an inverse proportionality has been yielded between these two parameters for k3-(O2, C=C) tridentate modes. For k3-(O3,C=C) tridentate mode coordination, the higher stability has been obtained. In this latter tridentate coordination in gas phase, the topological analysis of complexes exhibits the fact that the electron density is concentrated between the O3 oxygen atom of the ligand attached to Fe2+ and this metal cation. Moreover, the hydrogen bond strength calculated for isolated ligands (situated between 23.92 and 30.15 kJ/mol) is in the range of normal HBs. Collectively, all the complexation processes have shown to be highly exothermic. Our results have also shown that the electron extraction from Fe2+...Lai complexes is more difficult compared to that from free ligands.
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Notaro A, Jakubaszek M, Koch S, Rubbiani R, Dömötör O, Enyedy ÉA, Dotou M, Bedioui F, Tharaud M, Goud B, Ferrari S, Alessio E, Gasser G. A Maltol‐Containing Ruthenium Polypyridyl Complex as a Potential Anticancer Agent. Chemistry 2020; 26:4997-5009. [DOI: 10.1002/chem.201904877] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 02/14/2020] [Indexed: 12/23/2022]
Affiliation(s)
- Anna Notaro
- Chimie ParisTechPSL UniversityCNRSInstitute of Chemistry for Life and Health SciencesLaboratory for Inorganic Chemical Biology 75005 Paris France
| | - Marta Jakubaszek
- Chimie ParisTechPSL UniversityCNRSInstitute of Chemistry for Life and Health SciencesLaboratory for Inorganic Chemical Biology 75005 Paris France
- Institut CuriePSL University, CNRS UMR 144 75248 Paris France
| | - Severin Koch
- Department of ChemistryUniversity of Zurich Winterthurerstrasse 190 8057 Zurich Switzerland
| | - Riccardo Rubbiani
- Department of ChemistryUniversity of Zurich Winterthurerstrasse 190 8057 Zurich Switzerland
| | - Orsolya Dömötör
- Department of Inorganic and Analytical ChemistryInterdisciplinary Excellence CentreUniversity of Szeged Dóm tér 7. 6720 Szeged Hungary
| | - Éva A. Enyedy
- Department of Inorganic and Analytical ChemistryInterdisciplinary Excellence CentreUniversity of Szeged Dóm tér 7. 6720 Szeged Hungary
- MTA-SZTE Lendület Functional Metal Complexes Research GroupUniversity of Szeged Dóm tér 7 6720 Szeged Hungary
| | - Mazzarine Dotou
- Chimie ParisTechPSL UniversityCNRSInstitute of Chemistry for Life and Health SciencesLaboratory for Inorganic Chemical Biology 75005 Paris France
| | - Fethi Bedioui
- Chimie ParisTech, PSL University, CNRSInstitute of Chemistry for Life and Health SciencesTeam Synthèse Electrochimie, Imagerie et Systèmes, Analytiques pour le Diagnostic 75005 Paris France
| | - Mickaël Tharaud
- Université de ParisInstitut de physique du globe de Paris, CNRS 75005 Paris France
| | - Bruno Goud
- Institut CuriePSL University, CNRS UMR 144 75248 Paris France
| | - Stefano Ferrari
- Institute of Molecular Cancer ResearchUniversity of Zurich 8057 Zurich Switzerland
- Institute of Molecular GeneticsCzech Academy of Sciences Videnska 1083 14300 Prague Czech Republic
| | - Enzo Alessio
- Department of Chemical and Pharmaceutical SciencesUniversity of Trieste Via, L. Giorgieri 1 34127 Trieste Italy
| | - Gilles Gasser
- Chimie ParisTechPSL UniversityCNRSInstitute of Chemistry for Life and Health SciencesLaboratory for Inorganic Chemical Biology 75005 Paris France
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Qu Y, Ananin AV, Kraus GA. Acylation and palladium-mediated couplings of maltol, a biobased γ-pyrone. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2019.151591] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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20
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Corsini M, Fusi S. Synthesis and Characterization of 3-Hydroxy-2-(5'-Hydroxypentyl)-4H-Pyran-4-one and Study of Its Complexation with Iron(III). RUSS J INORG CHEM+ 2020. [DOI: 10.1134/s003602361914002x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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21
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Lachowicz JI, Dalla Torre G, Cappai R, Randaccio E, Nurchi VM, Bachor R, Szewczuk Z, Jaremko L, Jaremko M, Pisano MB, Cosentino S, Orrù G, Ibba A, Mujika J, Lopez X. Metal self-assembly mimosine peptides with enhanced antimicrobial activity: towards a new generation of multitasking chelating agents. Dalton Trans 2020; 49:2862-2879. [DOI: 10.1039/c9dt04545g] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Mimosine is a non-protein amino acid that can be used as a building block in peptides with metal coordination ability.
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22
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Patel A, Asik D, Spernyak JA, Cullen PJ, Morrow JR. MRI and fluorescence studies of Saccharomyces cerevisiae loaded with a bimodal Fe(III) T 1 contrast agent. J Inorg Biochem 2019; 201:110832. [PMID: 31522137 PMCID: PMC6859208 DOI: 10.1016/j.jinorgbio.2019.110832] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 09/03/2019] [Accepted: 09/05/2019] [Indexed: 12/30/2022]
Abstract
Labeling of cells with paramagnetic metal complexes produces changes in MRI properties that have applications in cell tracking and identification. Here we show that fungi, specifically the budding yeast Saccharomyces cerevisiae, can be loaded with Fe(III) T1 contrast agents. Two Fe(III) macrocyclic complexes based on 1,4,7-triazacyclononane, with two pendant alcohol groups are prepared and studied as T1 relaxation MRI probes. To better visualize uptake and localization in the yeast cells, Fe(III) complexes have a fluorescent tag, consisting of either carbostyril or fluoromethyl coumarin. The Fe(III) complexes are robust towards dissociation and produce moderate T1 effects, despite lacking inner-sphere water ligands. Fluorescence microscopy and MRI T1 relaxation studies provide evidence of uptake of an Fe(III) complex into Saccharomyces cerevisiae upon electroporation.
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Affiliation(s)
- Akanksha Patel
- Department of Chemistry, University at Buffalo, State University of New York, Amherst, NY 14260, United States of America
| | - Didar Asik
- Department of Chemistry, University at Buffalo, State University of New York, Amherst, NY 14260, United States of America
| | - Joseph A Spernyak
- Department of Cell Stress Biology, Roswell Park Comprehensive Cancer Institute, Buffalo, NY 14263, United States of America
| | - Paul J Cullen
- Department of Biological Sciences, University at Buffalo, State University of New York, Amherst, NY 14260, United States of America
| | - Janet R Morrow
- Department of Chemistry, University at Buffalo, State University of New York, Amherst, NY 14260, United States of America.
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23
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Insights on the relationship between structure vs. toxicological activity of antibacterial rhodamine-labelled 3-hydroxy-4-pyridinone iron(III) chelators in HepG2 cells. Interdiscip Toxicol 2019; 11:189-199. [PMID: 31736632 PMCID: PMC6853001 DOI: 10.2478/intox-2018-0016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 07/24/2018] [Indexed: 12/17/2022] Open
Abstract
In the present study we investigated the in vitro hepatotoxicity of a set of rhodamine-labelled 3-hydroxy-4-pyridinones (3,4-HPO) that had previously demonstrated significant inhibitory effect in the intramacrophagic growth of Mycobacterium avium. Our aim was to establish a correspondence between the molecular structure and the in vitro toxicological activity of these compounds. The impact of a set of bidentate (MRB2, MRB7, MRB8, and MRB9) and hexadentate (MRH7, MRH8, and MRH10) chelators on cellular metabolic competence and membrane integrity was investigated in HepG2 cells. Our findings indicate that: a) hexadentate chelators are more cytotoxic than parent bidentate ligands; b) disruption of cell membrane and metabolic competence only occurred after 5 days, at the highest concentrations tested; c) strict correlation between bacteriostatic activity and in vitro toxicity was observed, which seems to be directly dependent on the size of the molecule and on the hydrophilic/lipophilic balance; d) among the set of bidentate ligands, carboxyrhodamine derivatives (amide linker) presented lower detrimental effects, when compared with rhodamine B isothiocyanate chelators (thiourea linker); e) contrarily, for the hexadentate series, rhodamine B isothiocyanate derivatives are less cytotoxic to HepG2 cells than carboxyrhodamine molecules; and f) for all compounds tested, when the substituents of the nitrogen atom were switched from ethyl to methyl, an increment of toxicity was observed. Overall, all chelators seem to display suitable in vitro toxicological potential to combat fast grow bacteria. According to their in vitro pharmacological: toxicological potential ratio, MRH7 and MRH8 may be considered as the most suitable compounds to undergo further pre-clinical development studies.
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24
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DNA interaction and anticancer evaluation of new zinc(II), ruthenium(II), rhodium(III), palladium(II), silver(I) and platinum(II) complexes based on kojic acid; X-ray crystal structure of [Ag(ka)(PPh3)]·H2O. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2018.12.031] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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25
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Sciortino G, Sanna D, Ugone V, Maréchal JD, Garribba E. Integrated ESI-MS/EPR/computational characterization of the binding of metal species to proteins: vanadium drug–myoglobin application. Inorg Chem Front 2019. [DOI: 10.1039/c9qi00179d] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
An integrated strategy based on ESI-MS spectrometry, EPR spectroscopy and docking/QM computational methods is applied to the systems formed by VIVO2+ ions and four potential VIVOL2 drugs and myoglobin. This approach is generizable to other metals and proteins.
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Affiliation(s)
- Giuseppe Sciortino
- Dipartimento di Chimica e Farmacia
- Università di Sassari
- I-07100 Sassari
- Italy
- Departament de Química
| | - Daniele Sanna
- Istituto CNR di Chimica Biomolecolare
- I-07040 Sassari
- Italy
| | - Valeria Ugone
- Dipartimento di Chimica e Farmacia
- Università di Sassari
- I-07100 Sassari
- Italy
| | | | - Eugenio Garribba
- Dipartimento di Chimica e Farmacia
- Università di Sassari
- I-07100 Sassari
- Italy
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26
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Cilibrizzi A, Abbate V, Chen YL, Ma Y, Zhou T, Hider RC. Hydroxypyridinone Journey into Metal Chelation. Chem Rev 2018; 118:7657-7701. [DOI: 10.1021/acs.chemrev.8b00254] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Agostino Cilibrizzi
- Institute of Pharmaceutical Science, King’s College London, Stamford Street, London SE1 9NH, United Kingdom
| | - Vincenzo Abbate
- Institute of Pharmaceutical Science, King’s College London, Stamford Street, London SE1 9NH, United Kingdom
- King’s Forensics, School of Population Health & Environmental Sciences, King’s College London, Franklin-Wilkins Building, 150 Stamford Street, London SE1 9NH, United Kingdom
| | - Yu-Lin Chen
- Institute of Pharmaceutical Science, King’s College London, Stamford Street, London SE1 9NH, United Kingdom
| | - Yongmin Ma
- College of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou, P. R. China 311402
| | - Tao Zhou
- Department of Applied Chemistry, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, P. R. China 310018
| | - Robert C. Hider
- Institute of Pharmaceutical Science, King’s College London, Stamford Street, London SE1 9NH, United Kingdom
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27
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Spiegel MT, Hoogerbrugge A, Truksa S, Smith AG, Shuford KL, Klausmeyer KK, Farmer PJ. Synthesis of first row transition metal selenomaltol complexes. Dalton Trans 2018; 47:9030-9037. [DOI: 10.1039/c8dt01170b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Complexation of selenomaltol to transition metal ions promotes a zwitterionic resonance form.
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Affiliation(s)
| | | | - Shamus Truksa
- Department of Chemistry and Biochemistry
- Baylor University
- Waco
- USA
| | - Andrew G. Smith
- Department of Chemistry and Biochemistry
- Baylor University
- Waco
- USA
| | - Kevin L. Shuford
- Department of Chemistry and Biochemistry
- Baylor University
- Waco
- USA
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28
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Hon J, Hwang MS, Charnetzki MA, Rashed IJ, Brady PB, Quillin S, Makinen MW. Kinetic characterization of the inhibition of protein tyrosine phosphatase-1B by Vanadyl (VO 2+) chelates. J Biol Inorg Chem 2017; 22:1267-1279. [PMID: 29071441 PMCID: PMC5671894 DOI: 10.1007/s00775-017-1500-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Accepted: 10/12/2017] [Indexed: 10/18/2022]
Abstract
Protein tyrosine phosphatases (PTPases) are a prominent focus of drug design studies because of their roles in homeostasis and disorders of metabolism. These studies have met with little success because (1) virtually all inhibitors hitherto exhibit only competitive behavior and (2) a consensus sequence H/V-C-X5-R-S/T characterizes the active sites of PTPases, leading to low specificity of active site directed inhibitors. With protein tyrosine phosphatase-1B (PTP1B) identifed as the target enzyme of the vanadyl (VO2+) chelate bis(acetylacetonato)oxidovanadium(IV) [VO(acac)2] in 3T3-L1 adipocytes [Ou et al. J Biol Inorg Chem 10: 874-886, 2005], we compared the inhibition of PTP1B by VO(acac)2 with other VO2+-chelates, namely, bis(2-ethyl-maltolato)oxidovanadium(IV) [VO(Et-malto)2] and bis(3-hydroxy-2-methyl-4(1H)pyridinonato)oxidovanadium(IV) [VO(mpp)2] under steady-state conditions, using the soluble portion of the recombinant human enzyme (residues 1-321). Our results differed from those of previous investigations because we compared inhibition in the presence of the nonspecific substrate p-nitrophenylphosphate and the phosphotyrosine-containing undecapeptide DADEpYLIPQQG mimicking residues 988-998 of the epidermal growth factor receptor, a relevant, natural substrate. While VO(Et-malto)2 acts only as a noncompetitive inhibitor in the presence of either subtrate, VO(acac)2 exhibits classical uncompetitive inhibition in the presence of DADEpYLIPQQG but only apparent competitive inhibition with p-nitrophenylphosphate as substrate. Because uncompetitive inhibitors are more potent pharmacologically than competitive inhibitors, structural characterization of the site of uncompetitive binding of VO(acac)2 may provide a new direction for design of inhibitors for therapeutic purposes. Our results suggest also that the true behavior of other inhibitors may have been masked when assayed with only p-nitrophenylphosphate as substrate.
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Affiliation(s)
- Jason Hon
- Department of Biochemistry and Molecular Biology Center for Integrative Science, The University of Chicago, 929 East 57th Street, Chicago, IL, 60637, USA
| | - Michelle S Hwang
- Department of Biochemistry and Molecular Biology Center for Integrative Science, The University of Chicago, 929 East 57th Street, Chicago, IL, 60637, USA
| | - Meara A Charnetzki
- Department of Biochemistry and Molecular Biology Center for Integrative Science, The University of Chicago, 929 East 57th Street, Chicago, IL, 60637, USA
| | - Issra J Rashed
- Department of Biochemistry and Molecular Biology Center for Integrative Science, The University of Chicago, 929 East 57th Street, Chicago, IL, 60637, USA
| | - Patrick B Brady
- Department of Biochemistry and Molecular Biology Center for Integrative Science, The University of Chicago, 929 East 57th Street, Chicago, IL, 60637, USA
| | - Sarah Quillin
- Department of Biochemistry and Molecular Biology Center for Integrative Science, The University of Chicago, 929 East 57th Street, Chicago, IL, 60637, USA
| | - Marvin W Makinen
- Department of Biochemistry and Molecular Biology Center for Integrative Science, The University of Chicago, 929 East 57th Street, Chicago, IL, 60637, USA.
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29
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Helsel ME, White EJ, Razvi SZA, Alies B, Franz KJ. Chemical and functional properties of metal chelators that mobilize copper to elicit fungal killing of Cryptococcus neoformans. Metallomics 2017; 9:69-81. [PMID: 27853789 DOI: 10.1039/c6mt00172f] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A panel of iron (Fe) and copper (Cu) chelators was screened for growth inhibitory activity against the fungal pathogen Cryptococcus neoformans. Select bidentate metal-binding ligands containing mixed O,S or O,N donor atoms were identified as agents that induce cell killing in a Cu-dependent manner. Conversely, structurally similar ligands with O,O donor atoms did not inhibit C. neoformans growth regardless of Cu status. Studies of Cu(ii) and Cu(i) binding affinity, lipophilicity, and growth recovery assays of Cu-import deficient cells identified lipophilicity of thermodynamically stable CuIIL2 complexes as the best predictor of antifungal activity. These same complexes induce cellular hyperaccumulation of Zn and Fe in addition to Cu. The results described here present the utility of appropriate metal-binding ligands as potential antifungal agents that manipulate cellular metal balance as an antimicrobial strategy.
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Affiliation(s)
- Marian E Helsel
- Department of Chemistry, Duke University, French Family Science Center, 124 Science Drive, 22708, Durham, NC, USA.
| | - Elizabeth J White
- Department of Chemistry, Duke University, French Family Science Center, 124 Science Drive, 22708, Durham, NC, USA.
| | - Sayyeda Zeenat A Razvi
- Department of Chemistry, Duke University, French Family Science Center, 124 Science Drive, 22708, Durham, NC, USA.
| | - Bruno Alies
- Department of Chemistry, Duke University, French Family Science Center, 124 Science Drive, 22708, Durham, NC, USA.
| | - Katherine J Franz
- Department of Chemistry, Duke University, French Family Science Center, 124 Science Drive, 22708, Durham, NC, USA.
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30
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Hanif M, Meier SM, Adhireksan Z, Henke H, Martic S, Movassaghi S, Labib M, Kandioller W, Jamieson SMF, Hejl M, Jakupec MA, Kraatz HB, Davey CA, Keppler BK, Hartinger CG. Functionalization of Ruthenium(II)(η 6 -p-cymene)(3-hydroxy-2-pyridone) Complexes with (Thio)Morpholine: Synthesis and Bioanalytical Studies. Chempluschem 2017; 82:841-847. [PMID: 31961568 DOI: 10.1002/cplu.201700050] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 03/16/2017] [Indexed: 02/06/2023]
Abstract
Hydroxypyr(id)ones constitute an emerging platform for the design of drug molecules, owing to their favorable biocompatibility and toxicity profiles. Herein, [RuII (η6 -p-cymene)] complexes with 3-hydroxy-2-pyridinone functionalized with morpholine and thiomorpholine, as a means often used in medicinal chemistry to alter the physicochemical properties of drug compounds, are reported. The compounds underwent hydrolysis of the Ru-Cl bond and the aqua species were stable for up to 48 h in aqueous solution, as observed by 1 H NMR spectroscopy and ESI-MS. The compounds formed adducts with amino acids and proteins through cleavage of the pyridinone ligand. Binding experiments to the nucleosome core particle by means of X-ray crystallography revealed similar reactivity and exclusive binding to histidine moieties of the histone proteins. Preliminary cyclin-dependent kinase 2 (CDK2)/cyclin A kinase inhibitory studies revealed promising activity similar to that of structurally related organometallic compounds.
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Affiliation(s)
- Muhammad Hanif
- School of Chemical Sciences, University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand.,Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Strasse 42, 1090, Vienna, Austria
| | - Samuel M Meier
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Strasse 42, 1090, Vienna, Austria.,Department of Analytical Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Strasse 38, 1090, Vienna, Austria
| | - Zenita Adhireksan
- School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore, 637551, Singapore
| | - Helena Henke
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Strasse 42, 1090, Vienna, Austria
| | - Sanela Martic
- Department of Chemistry, Oakland University, 2200 North Squirrel Road, Rochester, MI, 48309, USA
| | - Sanam Movassaghi
- School of Chemical Sciences, University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand
| | - Mahmoud Labib
- Department of Pharmaceutical Sciences, University of Toronto, Toronto, ON, M5S 3H2, Canada
| | - Wolfgang Kandioller
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Strasse 42, 1090, Vienna, Austria.,Research Platform "Translational Cancer Therapy Research", University of Vienna, Waehringer Strasse 42, 1090, Vienna, Austria
| | - Stephen M F Jamieson
- Auckland Cancer Society Research Centre, University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand
| | - Michaela Hejl
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Strasse 42, 1090, Vienna, Austria
| | - Michael A Jakupec
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Strasse 42, 1090, Vienna, Austria.,Research Platform "Translational Cancer Therapy Research", University of Vienna, Waehringer Strasse 42, 1090, Vienna, Austria
| | - Heinz-Bernhard Kraatz
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON, M5S 3H6, Canada.,Department of Physical and Environmental Sciences, University of Toronto Scarborough, 1265 Military Trail, Toronto, ON, M1C 1A4, Canada
| | - Curt A Davey
- School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore, 637551, Singapore.,NTU Institute of Structural Biology, Nanyang Technological University, 59 Nanyang Drive, Singapore, 636921, Singapore
| | - Bernhard K Keppler
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Strasse 42, 1090, Vienna, Austria.,Research Platform "Translational Cancer Therapy Research", University of Vienna, Waehringer Strasse 42, 1090, Vienna, Austria
| | - Christian G Hartinger
- School of Chemical Sciences, University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand.,Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Strasse 42, 1090, Vienna, Austria
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31
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Chen GN, Li N, Luo T, Dong YM. Enantiomers Recognition of Propranolol Based on Organic–Inorganic Hybrid Open-Tubular MIPs-CEC Column Using 3-(Trimethoxysilyl)Propyl Methacrylate as a Cross-Linking Monomer. J Chromatogr Sci 2017; 55:471-476. [DOI: 10.1093/chromsci/bmw204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Accepted: 12/14/2016] [Indexed: 11/12/2022]
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32
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Buchwalder C, Rodríguez-Rodríguez C, Schaffer P, Karagiozov SK, Saatchi K, Häfeli UO. A new tetrapodal 3-hydroxy-4-pyridinone ligand for complexation of 89zirconium for positron emission tomography (PET) imaging. Dalton Trans 2017; 46:9654-9663. [DOI: 10.1039/c7dt02196h] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The first octadentate 3-hydroxy-4-pyridinone chelator was prepared and its monometallic 89Zr(iv)-complex was studied in vitro and in vivo.
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Affiliation(s)
| | | | | | | | - Katayoun Saatchi
- University of British Columbia
- Faculty of Pharmaceutical Sciences
- Vancouver
- Canada
| | - Urs O. Häfeli
- University of British Columbia
- Faculty of Pharmaceutical Sciences
- Vancouver
- Canada
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33
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Maltol-Functionalized Fe3O4Nanoparticles asT2Magnetic Resonance Imaging Contrast Agents. ChemistrySelect 2016. [DOI: 10.1002/slct.201600240] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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34
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Modeling of stability and properties of anionic and cationic tautomers of the 3-hydroxypyridin-4-one system. COMPUT THEOR CHEM 2016. [DOI: 10.1016/j.comptc.2015.12.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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35
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3-Hydroxypyridinone derivatives as metal-sequestering agents for therapeutic use. Future Med Chem 2015; 7:383-410. [PMID: 25826364 DOI: 10.4155/fmc.14.162] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Although iron is one of the most important metal ions for living organisms, it becomes toxic when in excess or misplaced. This review presents a glance at representative examples of hydroxypyridinone-based chelators, which have been recently developed as potential clinically useful drugs for metal overload diseases, mostly associated with excess of iron but also other hard metal-ions. It also includes a detailed discussion on the factors assisting chelator design strategy toward fulfillment of the most relevant biochemical properties of hydroxypyridinone chelators, highlighting structure-activity relationships and a variety of potential clinical applications, beyond chelatotherapy. This study appears as a response to the growing interest on metal chelation therapy and opens new perspectives of possible applications in future medicine.
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36
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Maurya MR, Saini N, Avecilla F. Liquid phase versus microwave assisted selective oxidation of volatile organic compounds involving dioxidomolybdenum(VI) and oxidoperoxidomolybdenum(VI) complexes as catalysts in the presence/absence of an N-based additive. Polyhedron 2015. [DOI: 10.1016/j.poly.2015.01.030] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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37
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Salsbury LE, Robertson KN, Flewelling AJ, Li H, Geier SJ, Vogels CM, Gray CA, Westcott SA. Anti-mycobacterial activities of copper(II) complexes. Part II. Lipophilic hydroxypyridinones derived from maltol. CAN J CHEM 2015. [DOI: 10.1139/cjc-2014-0426] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Eight lipophilic 3-hydroxy-4-pyridinones have been prepared from a microwave-mediated reaction along with the corresponding copper(II) complexes. All complexes have been obtained elementally pure and X-ray diffraction studies on two of the copper complexes have confirmed the structure of these compounds. Some of these complexes showed a promising degree of anti-mycobacterial activity against Mycobacterium tuberculosis, where activity seemed to vary by substitution at the pyridinone nitrogen atom.
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Affiliation(s)
- Lauren E. Salsbury
- Department of Chemistry and Biochemistry, Mount Allison University, Sackville, NB E4L 1G8, Canada
| | | | - Andrew J. Flewelling
- Department of Biology, University of New Brunswick, Saint John, NB E2L 4L5, Canada
| | - Hoaxin Li
- Department of Biology, University of New Brunswick, Saint John, NB E2L 4L5, Canada
| | - Stephen J. Geier
- Department of Chemistry and Biochemistry, Mount Allison University, Sackville, NB E4L 1G8, Canada
| | - Christopher M. Vogels
- Department of Chemistry and Biochemistry, Mount Allison University, Sackville, NB E4L 1G8, Canada
| | - Christopher A. Gray
- Department of Biology, University of New Brunswick, Saint John, NB E2L 4L5, Canada
- Department of Chemistry, University of New Brunswick, Fredericton, NB E3B 5A3, Canada
| | - Stephen A. Westcott
- Department of Chemistry and Biochemistry, Mount Allison University, Sackville, NB E4L 1G8, Canada
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38
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39
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Burrows AD, Jurcic M, Mahon MF, Pierrat S, Roffe GW, Windle HJ, Spencer J. Bismuth coordination networks containing deferiprone: synthesis, characterisation, stability and antibacterial activity. Dalton Trans 2015; 44:13814-7. [DOI: 10.1039/c5dt02458g] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Bismuth–dicarboxylate–deferiprone coordination networks release the iron overload drug deferiprone on treatment with PBS and demonstrate antibacterial activity against H. pylori.
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Affiliation(s)
| | - Monika Jurcic
- Department of Chemistry
- University of Bath
- Claverton Down
- UK
| | - Mary F. Mahon
- Department of Chemistry
- University of Bath
- Claverton Down
- UK
| | | | - Gavin W. Roffe
- Department of Chemistry
- School of Life Sciences
- University of Sussex
- Falmer
- UK
| | - Henry J. Windle
- Institute of Molecular Medicine
- Trinity Centre for Health Sciences
- Trinity College
- Dublin 2
- Ireland
| | - John Spencer
- Department of Chemistry
- School of Life Sciences
- University of Sussex
- Falmer
- UK
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40
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Neupane P, Xia L, Lee YR. One-Pot Synthesis of Multi-Substituted 4-Pyrones by a Gold- Catalyzed Cascade of Wolff Rearrangement/[4+2] Cycloaddition/ Elimination Reactions. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201301086] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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41
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Zabrodina GS, Kalakutskaya LV, Lukoyanova OV, Lopatina TI, Katkova MA. Water-soluble heteroligand complexes of 2-methyl-4-oxo-4H-pyran-3-olatoneodymium(III) with amino acids. RUSS J GEN CHEM+ 2014. [DOI: 10.1134/s1070363214050235] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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42
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Synthesis, characterization, and cytotoxicity studies of Cu(II), Zn(II), and Fe(III) complexes of N-derivatized 3-hydroxy-4-pyridiones. J Inorg Biochem 2014; 132:59-66. [DOI: 10.1016/j.jinorgbio.2013.12.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2013] [Revised: 12/09/2013] [Accepted: 12/13/2013] [Indexed: 12/16/2022]
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43
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Parajón-Costa BS, Baran EJ. Vibrational spectra of bis(maltolato)zinc(II), an interesting insulin mimetic agent. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 113:337-339. [PMID: 23743039 DOI: 10.1016/j.saa.2013.04.119] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2013] [Revised: 04/15/2013] [Accepted: 04/24/2013] [Indexed: 06/02/2023]
Abstract
The FTIR and FT-Raman spectra of the zinc(II) complex of 3-hydroxy-2-methyl-4-pyrone (maltol), bis(maltolato)zinc(II), were recorded and briefly discussed by comparison with the spectra of uncoordinated maltol and with some related maltolato complexes.
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Affiliation(s)
- Beatriz S Parajón-Costa
- Centro de Química Inorgánica (CEQUINOR, CONICET/UNLP), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, C. Correo 962, 1900 La Plata, Argentina
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44
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The Synthesis and Molecular Structure of 1-(3,4-Dihydroxyphenethyl)-3-hydroxy-2-methylpyridin-4(1H)-one Hydrochloride Methanol Solvate. CRYSTALS 2013. [DOI: 10.3390/cryst3020333] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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45
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Petrus R, Petrus J, Paszek K, Sobota P. Dieth-yl(μ3-2-methyl-4-oxo-4H-pyran-3-olato-κ(4) O (3),O (4):O (3):O (3))tris-(μ2-2-methyl-4-oxo-4H-pyran-3-olato-κ(3) O (3),O (4):O (3))trizinc toluene disolvate. Acta Crystallogr Sect E Struct Rep Online 2013; 69:m281-2. [PMID: 23723783 PMCID: PMC3647817 DOI: 10.1107/s1600536813010064] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2013] [Accepted: 04/11/2013] [Indexed: 11/10/2022]
Abstract
The title compound, [Zn3(C2H5)2(C6H5O3)4]·2C7H8, crystallizes with one complex mol-ecule solvated by two mol-ecules of toluene in the asymmetric unit. The Zn(II) ions are coordinated by two terminal ethyl (Et) groups and four maltolate ligands, which act as μ3- and μ2-bridges. The metal atoms are arranged in an incomplete cubane Zn3O4 core structure, derived from one EtZnO3 tetra-hedron, one EtZnO4 bipyramid and one ZnO6 octa-hedron, sharing common corners. The structure is stabilized by weak C-H⋯O and C-H⋯π inter-actions.
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Affiliation(s)
- Rafał Petrus
- Faculty of Chemistry, University of Wroclaw, 50-383 Wroclaw, 14 F. Joliot-Curie, Poland
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46
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Ramsaywack S, Vogels CM, Ricker SL, Westcott SA, Barclay LRC. Pyridinones Are Not Antioxidants As Shown by Kinetics of Free Radical Autoxidation, but They Prevent Radical Oxidations Catalyzed by Toxic Heavy Metals. Chem Res Toxicol 2013; 26:399-409. [DOI: 10.1021/tx300486r] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sharwatie Ramsaywack
- Departments of †Chemistry and Biochemistry and ‡Mathematics and
Computer Science, Mount Allison University, Sackville,
New Brunswick, Canada E4L 1G8
| | - Christopher M. Vogels
- Departments of †Chemistry and Biochemistry and ‡Mathematics and
Computer Science, Mount Allison University, Sackville,
New Brunswick, Canada E4L 1G8
| | - S. Laurie Ricker
- Departments of †Chemistry and Biochemistry and ‡Mathematics and
Computer Science, Mount Allison University, Sackville,
New Brunswick, Canada E4L 1G8
| | - Stephen A. Westcott
- Departments of †Chemistry and Biochemistry and ‡Mathematics and
Computer Science, Mount Allison University, Sackville,
New Brunswick, Canada E4L 1G8
| | - L. Ross C. Barclay
- Departments of †Chemistry and Biochemistry and ‡Mathematics and
Computer Science, Mount Allison University, Sackville,
New Brunswick, Canada E4L 1G8
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47
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Martinez G, Arumugam J, Jacobs HK, Gopalan AS. 3,2-Hydroxypyridinone (3,2-HOPO) vinyl sulfonamide and acrylamide linkers: Aza-Michael addition reactions and the preparation of poly-HOPO chelators. Tetrahedron Lett 2013; 54:630-634. [PMID: 23355751 PMCID: PMC3551596 DOI: 10.1016/j.tetlet.2012.11.136] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
The HOPO vinyl sulfonamide 3 and the corresponding HOPO acrylamide 10, were easily prepared by short synthetic sequences. Investigation of the aza-Michael reactions of these linkers showed that they proceed at a higher rate in solvent systems containing water. The scope and limits of the aza-Michael reactions of 3 and 10 were examined. Reagents 3 and 10 reacted cleanly with piperazine to give the corresponding adducts which were deprotected to give the di-HOPO ligands 7 and 16. Reaction of HOPO acrylamide 10 with 1,4,7-triazacyclononane gave the tris-adduct 17 which was deprotected to give the desired tris-HOPO ligand 18. Overall, the aza-Michael reactions of 3 and 10 appear to be governed not only by the solvent but also by the nature of the amine and the solubility of the reaction intermediates.
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Affiliation(s)
- Gloria Martinez
- Department of Chemistry and Biochemistry, MSC 3C, New Mexico State University, Las Cruces, NM 88003-8001 USA
| | - Jayanthi Arumugam
- Department of Chemistry and Biochemistry, MSC 3C, New Mexico State University, Las Cruces, NM 88003-8001 USA
| | - Hollie K. Jacobs
- Department of Chemistry and Biochemistry, MSC 3C, New Mexico State University, Las Cruces, NM 88003-8001 USA
| | - Aravamudan S. Gopalan
- Department of Chemistry and Biochemistry, MSC 3C, New Mexico State University, Las Cruces, NM 88003-8001 USA
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48
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Henke H, Kandioller W, Hanif M, Keppler BK, Hartinger CG. Organometallic ruthenium and osmium compounds of pyridin-2- and -4-ones as potential anticancer agents. Chem Biodivers 2013; 9:1718-27. [PMID: 22976964 DOI: 10.1002/cbdv.201200005] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Organometallic Ru(II) compounds are among the most widely studied anticancer agents. Functionalizing metal centers with biomolecule-derived ligands has been shown to be a promising strategy to improve the antiproliferative activity of metal-based chemotherapeutics. Herein, the synthesis of a series of novel 3-hydroxypyridin-2-one-derived ligands and their M(II)(η(6)-p-cymene) half-sandwich complexes (M = Ru, Os) is described. The compounds were characterized by 1D- and 2D-NMR spectroscopy, and elemental analysis.
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Affiliation(s)
- Helena Henke
- University of Vienna, Institute of Inorganic Chemistry, Waehringer Str. 42, AT-1090 Vienna
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49
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Ciupa A, De Bank PA, Caggiano L. Multicellular aggregation of maltol-modified cells triggered by Fe3+ ions. Chem Commun (Camb) 2013; 49:10148-50. [DOI: 10.1039/c3cc43727b] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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50
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Liu W, Gust R. Metal N-heterocyclic carbene complexes as potential antitumor metallodrugs. Chem Soc Rev 2013; 42:755-73. [PMID: 23147001 DOI: 10.1039/c2cs35314h] [Citation(s) in RCA: 586] [Impact Index Per Article: 53.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Wukun Liu
- Institute of Pharmacy, Freie Universität Berlin, Königin-Luise-Str 2+4, 14195 Berlin, Germany
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