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Carbo-Bague I, Li C, McNeil BL, Gao Y, McDonagh AW, Van de Voorde M, Ooms M, Kunz P, Yang H, Radchenko V, Schreckenbach G, Ramogida CF. Comparative Study of a Decadentate Acyclic Chelate, HOPO-O 10, and Its Octadentate Analogue, HOPO-O 8, for Radiopharmaceutical Applications. Inorg Chem 2023; 62:20549-20566. [PMID: 36608341 DOI: 10.1021/acs.inorgchem.2c03671] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Radiolanthanides and actinides are aptly suited for the diagnosis and treatment of cancer via nuclear medicine because they possess unique chemical and physical properties (e.g., radioactive decay emissions). These rare radiometals have recently shown the potential to selectively deliver a radiation payload to cancer cells. However, their clinical success is highly dependent on finding a suitable ligand for stable chelation and conjugation to a disease-targeting vector. Currently, the commercially available chelates exploited in the radiopharmaceutical design do not fulfill all of the requirements for nuclear medicine applications, and there is a need to further explore their chemistry to rationally design highly specific chelates. Herein, we describe the rational design and chemical development of a novel decadentate acyclic chelate containing five 1,2-hydroxypyridinones, 3,4,3,3-(LI-1,2-HOPO), referred to herein as HOPO-O10, based on the well-known octadentate ligand 3,4,3-(LI-1,2-HOPO), referred to herein as HOPO-O8, a highly efficient chelator for 89Zr[Zr4+]. Analysis by 1H NMR spectroscopy and mass spectrometry of the La3+ and Tb3+ complexes revealed that HOPO-O10 forms bimetallic complexes compared to HOPO-O8, which only forms monometallic species. The radiolabeling properties of both chelates were screened with [135La]La3+, [155/161Tb]Tb3+, [225Ac]Ac3+ and, [227Th]Th4+. Comparable high specific activity was observed for the [155/161Tb]Tb3+ complexes, outperforming the gold-standard 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid, yet HOPO-O10 surpassed HOPO-O8 with higher [227Th]Th4+ affinity and improved complex stability in a human serum challenge assay. A comprehensive analysis of the decadentate and octadentate chelates was performed with density functional theory for the La3+, Ac3+, Eu3+, Tb3+, Lu3+, and Th4+ complexes. The computational simulations demonstrated the enhanced stability of Th4+-HOPO-O10 over Th4+-HOPO-O8. This investigation reveals the potential of HOPO-O10 for the stable chelation of large tetravalent radioactinides for nuclear medicine applications and provides insight for further chelate development.
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Affiliation(s)
- Imma Carbo-Bague
- Department of Chemistry, Simon Fraser University, Burnaby, British ColumbiaV5A 1S6, Canada
| | - Cen Li
- Department of Chemistry, University of Manitoba, Winnipeg, ManitobaR3T 2N2, Canada
| | - Brooke L McNeil
- Department of Chemistry, Simon Fraser University, Burnaby, British ColumbiaV5A 1S6, Canada
- Life Sciences Division, TRIUMF, Vancouver, British ColumbiaV6T 2A3, Canada
| | - Yang Gao
- Department of Chemistry, University of Manitoba, Winnipeg, ManitobaR3T 2N2, Canada
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, Sichuan610054, China
| | - Anthony W McDonagh
- Department of Chemistry, Simon Fraser University, Burnaby, British ColumbiaV5A 1S6, Canada
| | | | - Maarten Ooms
- NURA Research Group, Belgian Nuclear Research Center, SCK CEN, 2400Mol, Belgium
| | - Peter Kunz
- Department of Chemistry, Simon Fraser University, Burnaby, British ColumbiaV5A 1S6, Canada
- Accelerator Division, TRIUMF, Vancouver, British ColumbiaV6T 2A3, Canada
| | - Hua Yang
- Department of Chemistry, Simon Fraser University, Burnaby, British ColumbiaV5A 1S6, Canada
- Life Sciences Division, TRIUMF, Vancouver, British ColumbiaV6T 2A3, Canada
| | - Valery Radchenko
- Life Sciences Division, TRIUMF, Vancouver, British ColumbiaV6T 2A3, Canada
- Department of Chemistry, University of British Columbia, Vancouver, British ColumbiaV6T 1Z1, Canada
| | - Georg Schreckenbach
- Department of Chemistry, University of Manitoba, Winnipeg, ManitobaR3T 2N2, Canada
| | - Caterina F Ramogida
- Department of Chemistry, Simon Fraser University, Burnaby, British ColumbiaV5A 1S6, Canada
- Life Sciences Division, TRIUMF, Vancouver, British ColumbiaV6T 2A3, Canada
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2
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Xia W, Chakka VP, Chen K, Wang F, Xie YY, Hider RC, Zhou T. A Novel Stilbene Analogue: Antioxidant Activity and Application in Controlling the Quality and Bacterial Growth of Shrimp Refrigerated at 4ºC. JOURNAL OF AQUATIC FOOD PRODUCT TECHNOLOGY 2022. [DOI: 10.1080/10498850.2021.2024636] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Wei Xia
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, Zhejiang, P. R. China
| | - Vara Prasad Chakka
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, Zhejiang, P. R. China
| | - Kai Chen
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, Zhejiang, P. R. China
| | - Fan Wang
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, Zhejiang, P. R. China
| | - Yuan-Yuan Xie
- Department of Food Engineering, College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, P R China
| | - Robert C. Hider
- Division of Pharmaceutical Science, King’s College London, London, UK
| | - Tao Zhou
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, Zhejiang, P. R. China
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Sharma S, Baral M, Kanungo BK. Recent advances in therapeutical applications of the versatile hydroxypyridinone chelators. J INCL PHENOM MACRO 2022. [DOI: 10.1007/s10847-021-01114-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Hruby M, Martínez IIS, Stephan H, Pouckova P, Benes J, Stepanek P. Chelators for Treatment of Iron and Copper Overload: Shift from Low-Molecular-Weight Compounds to Polymers. Polymers (Basel) 2021; 13:3969. [PMID: 34833268 PMCID: PMC8618197 DOI: 10.3390/polym13223969] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 11/09/2021] [Accepted: 11/15/2021] [Indexed: 12/18/2022] Open
Abstract
Iron and copper are essential micronutrients needed for the proper function of every cell. However, in excessive amounts, these elements are toxic, as they may cause oxidative stress, resulting in damage to the liver and other organs. This may happen due to poisoning, as a side effect of thalassemia infusion therapy or due to hereditary diseases hemochromatosis or Wilson's disease. The current golden standard of therapy of iron and copper overload is the use of low-molecular-weight chelators of these elements. However, these agents suffer from severe side effects, are often expensive and possess unfavorable pharmacokinetics, thus limiting the usability of such therapy. The emerging concepts are polymer-supported iron- and copper-chelating therapeutics, either for parenteral or oral use, which shows vivid potential to keep the therapeutic efficacy of low-molecular-weight agents, while avoiding their drawbacks, especially their side effects. Critical evaluation of this new perspective polymer approach is the purpose of this review article.
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Affiliation(s)
- Martin Hruby
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic Heyrovského Náměstí 2, 162 06 Prague, Czech Republic;
| | - Irma Ivette Santana Martínez
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research Bautzner Landstraße 400, 01328 Dresden, Germany; (I.I.S.M.); (H.S.)
| | - Holger Stephan
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research Bautzner Landstraße 400, 01328 Dresden, Germany; (I.I.S.M.); (H.S.)
| | - Pavla Pouckova
- Institute of Biophysics and Informatics, First Faculty of Medicine, Charles University in Prague, Salmovska 1, 120 00 Prague, Czech Republic; (P.P.); (J.B.)
| | - Jiri Benes
- Institute of Biophysics and Informatics, First Faculty of Medicine, Charles University in Prague, Salmovska 1, 120 00 Prague, Czech Republic; (P.P.); (J.B.)
| | - Petr Stepanek
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic Heyrovského Náměstí 2, 162 06 Prague, Czech Republic;
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Development of a platform for the production of multiple modal chelating and imaging agents using desferrioxamine and bovine albumin as a model. CHEMICAL PAPERS 2021. [DOI: 10.1007/s11696-020-01374-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Espósito BP, Martins AC, de Carvalho RRV, Aschner M. High throughput fluorimetric assessment of iron traffic and chelation in iron-overloaded Caenorhabditis elegans. Biometals 2020; 33:255-267. [PMID: 32979113 DOI: 10.1007/s10534-020-00250-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Accepted: 09/16/2020] [Indexed: 01/31/2023]
Abstract
The nematode Caenorhabditis elegans (C. elegans) is a convenient tool to evaluate iron metabolism as it shares great orthology with human proteins involved in iron transport, in addition to being transparent and readily available. In this work, we describe how wild-type (N2) C. elegans nematodes in the first larval stage can be loaded with acetomethoxycalcein (CAL-AM) and study it as a whole-organism model for both iron speciation and chelator permeability of the labile iron pool (LIP). This model may be relevant for high throughput assessment of molecules intended for chelation therapy of iron overload diseases.
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Affiliation(s)
- Breno Pannia Espósito
- Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo, São Paulo, SP, Brazil.
| | - Airton Cunha Martins
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY, USA
| | | | - Michael Aschner
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY, USA
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Loginova NV, Harbatsevich HI, Osipovich NP, Ksendzova GA, Koval’chuk TV, Polozov GI. Metal Complexes as Promising Agents for Biomedical Applications. Curr Med Chem 2020; 27:5213-5249. [DOI: 10.2174/0929867326666190417143533] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 03/02/2019] [Accepted: 03/29/2019] [Indexed: 12/24/2022]
Abstract
Background::
In this review article, a brief overview of novel metallotherapeutic agents
(with an emphasis on the complexes of essential biometals) promising for medical application is
presented. We have also focused on the recent work carried out by our research team, specifically
the development of redox-active antimicrobial complexes of sterically hindered diphenols with some
essential biometals (copper, zinc, nickel).
Results::
The complexes of essential metals (manganese, iron, cobalt, nickel, copper, zinc) described
in the review show diverse in vitro biological activities, ranging from antimicrobial and antiinflammatory
to antiproliferative and enzyme inhibitory. It is necessary to emphasize that the type of
organic ligands in these metal complexes seems to be responsible for their pharmacological
activities. In the last decades, there has been a significant interest in synthesis and biological
evaluation of metal complexes with redox-active ligands. A substantial step in the development of
these redox-active agents is the study of their physicochemical and biological properties, including
investigations in vitro of model enzyme systems, which can provide evidence on a plausible
mechanism underlying the pharmacological activity. When considering the peculiarities of the
pharmacological activity of the sterically hindered diphenol derivatives and their nickel(II),
copper(II) and zinc(II) complexes synthesized, we took into account the following: (i) all these
compounds are potential antioxidants and (ii) their antimicrobial activity possibly results from their
ability to affect the electron-transport chain.
Conclusion::
We obtained novel data demonstrating that the level of antibacterial and antifungal
activity in the series of the above-mentioned metal-based antimicrobials depends not only on the
nature of the phenolic ligands and complexing metal ions, but also on the lipophilicity and reducing
ability of the ligands and metal complexes, specifically regarding the potential biotargets of their
antimicrobial action – ferricytochrome c and the superoxide anion radical. The combination of
antibacterial, antifungal and antioxidant activity allows one to consider these compounds as
promising substances for developing therapeutic agents with a broad spectrum of activities.
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Affiliation(s)
| | | | - Nikolai P. Osipovich
- Research Institute for Physico-Chemical Problems of the Belarusian State University, Minsk, Belarus
| | - Galina A. Ksendzova
- Research Institute for Physico-Chemical Problems of the Belarusian State University, Minsk, Belarus
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Özbolat G, Alizadeh Yegani A. Synthesis, characterization, biological activity and electrochemistry studies of iron(III) complex with curcumin-oxime ligand. Clin Exp Pharmacol Physiol 2020; 47:1834-1842. [PMID: 32497256 DOI: 10.1111/1440-1681.13359] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 05/21/2020] [Accepted: 05/22/2020] [Indexed: 12/17/2022]
Abstract
Iron overload is a key target in drug development. This study aimed to investigate the coordination of Fe(III) ions with a curcumin-oxime ligand that may be used in the treatment of iron overload. The synthesis of the curcumin-oxime ligand and curcumin-oxime-Fe(III) complex was successfully made and characterized in its solid-state and solution-state using FT-IR, UV-Vis, elemental analysis, and 1 H-NMR. However, in this study, we investigated the apoptotic effects of the curcumin-oxime Fe (III) complex on SW480. SW480 cells were exposed to 99.2% medium for 48 hours. After 48 hours, the incubation period, cells were harvested by centrifugation and washed in phosphate-buffered saline (PBS) and lysed in radio-immunoprecipitation assay (RIPA) buffer for 20 minutes and supernatants were taken and pellets were discarded. ELISA test was used to examine the expression, and activity of cleaved caspase-3, Bax, and Bcl-2 proteins in SW480 cells. ELISA test results indicated that the activities of apoptotic proteins Bax, caspase 3 and Bcl-2 in human SW480 cell lines significantly increased in 48 hours treatment. Also, the activity of Bcl-2 was observed to decrease significantly. Catalase activities of the complex were investigated. The findings showed that the complex has a catalase activity. The findings suggest that this type of complex may constitute a new and interesting basis for the future search of new and more potent drugs. The SOD activity of the result showed that the complexes possessed a considerable SOD activity with an IC50 value of 7.685 µM. Also, when compared with the control, a complex increased the SOD levels (P < .05). Electrochemistry studies in the literature have shown that the Fe3+ /Fe2+ couple redox process occurs in low potential. This value is within the range of compounds that are expected to show superoxide dismutase activity. The Ipc /Ipa shows that one electron transport takes place in the complex. Our results suggest that curcumin-oxime may represent a new approach in the treatment of iron overload.
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Affiliation(s)
| | - Arash Alizadeh Yegani
- Department of Pharmacology, Faculty of Veterinary, Mustafa Kemal University, Hatay, Turkey
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Kaviani S, Izadyar M, Housaindokht MR. A DFT study on the metal ion selectivity of deferiprone complexes. Comput Biol Chem 2020; 86:107267. [PMID: 32470911 DOI: 10.1016/j.compbiolchem.2020.107267] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 03/13/2020] [Accepted: 04/14/2020] [Indexed: 12/21/2022]
Abstract
In this work, systematic density functional theory (DFT) calculations were performed to study the interactions of various metal ions (Al3+, Fe3+, Co2+, Ni2+, Cu2+, and Zn2+) and the clinically useful chelating agent called deferiprone (DFP) at the M05-2X/6-31G(d) level of theory. The thermodynamic parameters of metal-deferiprone complexes were determined in water. Based on the obtained data, the theoretical binding energy trend is as follows: Al3+ > Fe3+ > Cu2+ > Ni2+ > Co2+ > Zn2+, confirming that [Al(DFP)3] has the most interaction energy. Moreover, Natural bond orbital analysis was employed to determine and analyze the natural charges on different atoms and charge transfer between the metal ions and ligands (oxygen atoms) as well as the interaction energy (E(2)) values. The calculated value of ƩE(2) (donor-acceptor interaction energy) for [Al(DFP)3] complex is higher than other complexes, which is according to energy analysis. To confirm the type of effective interactions and bonding properties in the water, the quantum theory of atoms in molecules (QTAIM) analysis was applied. QTAIM analysis confirmed that the strongest M - O bond is found in the [Al(DFP)3] complex. The calculated topological properties at the bond critical points, such as the ratio of the kinetic energy density to the potential energy density, -G(r)/V(r), electronic energy density, H(r), confirm that M - O bonds in the Al-deferiprone complex are non-covalent, while in other complexes, they are electrostatic and partially covalent.
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Affiliation(s)
- Sadegh Kaviani
- Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Mohammad Izadyar
- Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran.
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Huyen Vu T, Serradji N, Seydou M, Brémond É, Ha-Duong NT. Electronic spectroscopic characterization of the formation of iron(III) metal complexes: The 8-HydroxyQuinoline as ligand case study. J Inorg Biochem 2019; 203:110864. [PMID: 31698326 DOI: 10.1016/j.jinorgbio.2019.110864] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 09/13/2019] [Accepted: 09/14/2019] [Indexed: 12/29/2022]
Abstract
Synthetic siderophores derivated from 8-HydroxyQuinoline (HQ) present various biological and pharmacological activities, such as anti-neurodegenerative or anti-oxydative. However, their affinity towards iron(III) seems to depend on the position (i.e., 7 or 2) of the HQ substitution by an electron withdrawing group. Two ester-derivatives of HQ at 2- and 7-position are synthesized and their respective iron-complexation is characterized by a joined experimental and theoretical work. By investigating the stability of all the possible accessible spin states of the iron(III) complexes at density-functional theory (DFT) level, we demonstrate that the high-spin (HS) state is the most stable one, and leads to a UV/vis absorption spectrum in perfect match with experiments. From this DFT protocol, and in agreement with the experimental results, we show that the ester functionalization of HQ in 2-position weakens the formation of the iron(III) complex while its substitution in 7-position allows a salicylate coordination of the metal very close to the ideal octahedral environment.
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Affiliation(s)
- Thi Huyen Vu
- Université de Paris, ITODYS, UMR 7086, CNRS, 15 rue Jean Antoine de Baïf, Paris F-75205, France; University of Sciences and Technology of Hanoi (USTH), Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Nawal Serradji
- Université de Paris, ITODYS, UMR 7086, CNRS, 15 rue Jean Antoine de Baïf, Paris F-75205, France
| | - Mahamadou Seydou
- Université de Paris, ITODYS, UMR 7086, CNRS, 15 rue Jean Antoine de Baïf, Paris F-75205, France
| | - Éric Brémond
- Université de Paris, ITODYS, UMR 7086, CNRS, 15 rue Jean Antoine de Baïf, Paris F-75205, France.
| | - Nguyen-Thanh Ha-Duong
- Université de Paris, ITODYS, UMR 7086, CNRS, 15 rue Jean Antoine de Baïf, Paris F-75205, France.
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Shyam M, Dev A, Sinha BN, Jayaprakash V. Scaffold Based Search on the Desferithiocin Archetype. Mini Rev Med Chem 2019; 19:1564-1576. [PMID: 30827237 DOI: 10.2174/1389557519666190301151151] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 12/17/2018] [Accepted: 01/21/2019] [Indexed: 01/19/2023]
Abstract
Iron overload disorder and diseases where iron mismanagement plays a crucial role require orally available iron chelators with favourable pharmacokinetic and toxicity profile. Desferrithiocin (DFT), a tridentate and orally available iron chelator has a favourable pharmacokinetic profile but its use has been clinically restricted due to its nephrotoxic potential. The chemical architecture of the DFT has been naturally well optimized for better iron chelation and iron clearance from human biological system. Equally they are also responsible for its toxicity. Hence, subsequent research has been devoted to develop a non-nephrotoxic analogue of DFT without losing its iron clearance ability. The review has been designed to classify the compounds reported till date and to discuss the structure activity relationship with reference to modifications attempted at different positions over pyridine and thiazoline ring of DFT. Compounds are clustered under two major classes: (i) Pyridine analogues and (ii) phenyl analogue and further each class has been further subdivided based on the presence or absence and the number of hydroxy functional groups present over pyridine or phenyl ring of the DFT analogues. Finally a summary and few insights into the development of newer analogues are provided.
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Affiliation(s)
- Mousumi Shyam
- Department of Pharmaceutical Sciences & Technology, Birla Institute of Technology, Mesra, Ranchi, Jharkhand 835215, India
| | - Abhimanyu Dev
- Department of Pharmaceutical Sciences & Technology, Birla Institute of Technology, Mesra, Ranchi, Jharkhand 835215, India
| | - Barij Nayan Sinha
- Department of Pharmaceutical Sciences & Technology, Birla Institute of Technology, Mesra, Ranchi, Jharkhand 835215, India
| | - Venkatesan Jayaprakash
- Department of Pharmaceutical Sciences & Technology, Birla Institute of Technology, Mesra, Ranchi, Jharkhand 835215, India
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Coraça-Huber DC, Dichtl S, Steixner S, Nogler M, Weiss G. Iron chelation destabilizes bacterial biofilms and potentiates the antimicrobial activity of antibiotics against coagulase-negative Staphylococci. Pathog Dis 2019; 76:5026171. [PMID: 29860413 DOI: 10.1093/femspd/fty052] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Accepted: 05/30/2018] [Indexed: 12/14/2022] Open
Abstract
OBJECTIVES The ability of certain bacteria to form biofilms underlies their capacity to cause medical device-associated infections. Most bacteria need the metal iron for their proliferation but also to form biofilms. The aim of this in vitro study was to investigate whether iron restriction upon application of the iron chelator deferiprone (DFP) impacts on bacterial biofilm formation and whether such an intervention can exert synergistic effects towards the antibacterial activity of three antibiotic compounds against coagulase-negative staphylococci (CNS) residing on titanium plates. METHODS Bacteria were seeded on titanium discs and cultured to obtain biofilms. Biofilms were then exposed to DFP and/or antibiotic treatment with clindamycin, gentamycin or vancomycin. Fluorescence microscopy and scanning electron microscopy (SEM) were used for morphological analysis of the biofilms before and after treatment. RESULTS Whereas DFP alone had only a moderate inhibitory effect on biofilm growth, the combination of DFP with the respective antibiotics resulted in a significant decline of bacterial numbers by two to three logs as compared to the effect of antibiotics alone. Fluorescence staining and SEM demonstrated severe damage to even complete destruction of biofilms after combined treatment with DFP and antibiotics that was not the case upon sole treatment with antibiotics. CONCLUSION Iron chelation is able to potentiate the antibacterial activity of conventional antibiotics by destroying bacterial biofilms that recommends this combination as a promising strategy for the treatment of chronic device infections with biofilm producing CNS.
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Affiliation(s)
- Débora C Coraça-Huber
- Experimental Orthopedics, Department of Orthopedic Surgery, Medical University of Innsbruck, Innrain 36, 6020, Innsbruck, Austria
| | - Stefanie Dichtl
- Department of Internal Medicine II - Infectious Diseases, Immunology, Rheumatology and Pneumology, Medical University Innsbruck, Anichstrasse 35, 6020, Innsbruck, Austria
| | - Stephan Steixner
- Experimental Orthopedics, Department of Orthopedic Surgery, Medical University of Innsbruck, Innrain 36, 6020, Innsbruck, Austria
| | - Michael Nogler
- Experimental Orthopedics, Department of Orthopedic Surgery, Medical University of Innsbruck, Innrain 36, 6020, Innsbruck, Austria
| | - Günter Weiss
- Department of Internal Medicine II - Infectious Diseases, Immunology, Rheumatology and Pneumology, Medical University Innsbruck, Anichstrasse 35, 6020, Innsbruck, Austria
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Mujika JI, Dalla Torre G, Lachowicz JI, Lopez X. In silico design of mimosine containing peptides as new efficient chelators of aluminum. RSC Adv 2019; 9:7688-7697. [PMID: 35521183 PMCID: PMC9061177 DOI: 10.1039/c8ra10139f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Accepted: 02/26/2019] [Indexed: 12/16/2022] Open
Abstract
The design of new and efficient chelators that can remove aluminium(iii), a metal with increasing recognition as a potential toxic agent, from biological systems is an area of high therapeutic relevance. In the present paper, we present an extensive computational study of a new promising type of these chelators based on mimosine containing peptides. The reason to choose mimosine is that the sidechain of this residue is similar to deferiprone, a ligand known to tightly interact with highly-valent metals, and in particular with Al(iii). In this article we analyze systematically, using a combination of methods that include QM/MM MD simulations, how the size and sequence of the polypeptides can alter the fundamental binding patterns to aluminum, in comparison with the binding to deferiprone. Particular attention is given towards the identification of the smallest peptide that interacts efficiently with aluminum, since polypeptide size is a fundamental factor to allow a given polypeptide to efficiently cross the cell membrane. The results indicate that the longest peptides, with 8 or 9 amino acids, show no difficulties interacting with Al(iii) in an optimum arrangement. By contrast, when the peptide contains five or six amino acids Al(iii) is pentacoordinated, reducing the stability of the resultant complex. In summary, our study demonstrates that the mimosine containing peptides can efficiently coordinate highly valent metals such as Al(iii), with a subtle dependence of the binding on the specific chain-lengths of the polypeptide. We believe that the present study sheds light on the adequacy of this new type of chelator towards aluminum binding. A novel chelator of aluminum is presented, a peptide containing three mimosine residues.![]()
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Affiliation(s)
- J. I. Mujika
- Kimika Fakultatea
- Euskal Herriko Unibertsitatea UPV/EHU
- Donostia International Physics Center (DIPC)
- 20080 Donostia
- Spain
| | - G. Dalla Torre
- Kimika Fakultatea
- Euskal Herriko Unibertsitatea UPV/EHU
- Donostia International Physics Center (DIPC)
- 20080 Donostia
- Spain
| | - J. I. Lachowicz
- University of Cagliari
- Department of Chemical and Geological Sciences
- Cittadella Universitaria
- Monserrato
- Italy
| | - X. Lopez
- Kimika Fakultatea
- Euskal Herriko Unibertsitatea UPV/EHU
- Donostia International Physics Center (DIPC)
- 20080 Donostia
- Spain
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Yan M, Hider RC, Ma Y. Cu(ii)- or Co(ii)-Catalyzed C(SP3)–H oxidation of N,N-dimethylaminoethanol: facile synthesis of methylene-bridged biindoles and 3-formylindoles selectively. Org Chem Front 2019. [DOI: 10.1039/c9qo00097f] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Methylene-bridged biindoles and 3-formylindoles were synthesized with high conversion rate and good regioselectivity using a new carbon donor N,N-dimethylethanolamine, catalyzed by CuCl2 and CoCl2 respectively.
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Affiliation(s)
- Min Yan
- School of Pharmaceutical and Chemical Engineering
- Taizhou University
- Taizhou 318000
- PR China
- School of Pharmaceutical Science
| | - Robert C. Hider
- Institute of Pharmaceutical Science
- King's College London
- London
- UK
| | - Yongmin Ma
- School of Pharmaceutical and Chemical Engineering
- Taizhou University
- Taizhou 318000
- PR China
- School of Pharmaceutical Science
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15
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Lachowicz JI, Crespo-Alonso M, Caltagirone C, Alberti G, Biesuz R, Orton JO, Nurchi VM. Salicylamide derivatives for iron and aluminium sequestration. From synthesis to complexation studies. J Trace Elem Med Biol 2018; 50:580-588. [PMID: 29685783 DOI: 10.1016/j.jtemb.2018.04.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 03/14/2018] [Accepted: 04/10/2018] [Indexed: 02/06/2023]
Abstract
This paper presents an easy, fast and economic synthesis of chelating agents for medical, environmental and analytical applications, and the evaluation of the stability of their complexes with Fe3+ and Al3+. Complex formation equilibria with Cu2+ and Zn2+ metal ions were also studied to evaluate if the chelating agents can perturb the homeostatic equilibria of these essential metal ions. Effective chelating agents for metal ions, in addition to their well-known medical uses, find an increasing number of applications in environmental remediation, agricultural applications (supplying essential elements in an easily available form), and in analytical chemistry as colorimetric reagents. Besides the stability of the complexes, the lack of toxicity and the low cost are the basic requisites of metal chelating agents. With these aims in mind, we utilized ethyl salicylate, a cheap molecule without toxic effects, and adopted a simple synthetic strategy to join two salicylate units through linear diamines of variable length. Actually, the mutual position of the metal binding oxygen groups, as well as the linker length, affected protonation and complex formation equilibria. A thorough study of the ligands is presented. In particular, the complex formation equilibria of the three ligands toward Fe3+, Al3+, Zn2+ and Cu2+ ions were investigated by combined potentiometric and spectrophotometric techniques. The results are encouraging: all the three ligands form stable complexes with all the investigated metal ions, involving the oxygen donor atoms from the 2-hydroxybenzamido unit, and nitrogen atoms in copper and zinc coordination.
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Affiliation(s)
- Joanna I Lachowicz
- Dipartimento di Scienze Chimiche e Geologiche, Università di Cagliari, Cittadella Universitaria, I-09042 Monserrato-Cagliari, Italy.
| | - Miriam Crespo-Alonso
- Dipartimento di Scienze Chimiche e Geologiche, Università di Cagliari, Cittadella Universitaria, I-09042 Monserrato-Cagliari, Italy
| | - Claudia Caltagirone
- Dipartimento di Scienze Chimiche e Geologiche, Università di Cagliari, Cittadella Universitaria, I-09042 Monserrato-Cagliari, Italy
| | | | | | - James O Orton
- Faculty of Natural and Environmental Sciences, University of Southampton, Southampton, United Kingdom
| | - Valeria M Nurchi
- Dipartimento di Scienze Chimiche e Geologiche, Università di Cagliari, Cittadella Universitaria, I-09042 Monserrato-Cagliari, Italy
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16
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Alcalde LA, de Freitas BS, Machado GDB, de Freitas Crivelaro PC, Dornelles VC, Gus H, Monteiro RT, Kist LW, Bogo MR, Schröder N. Iron chelator deferiprone rescues memory deficits, hippocampal BDNF levels and antioxidant defenses in an experimental model of memory impairment. Biometals 2018; 31:927-940. [PMID: 30117045 DOI: 10.1007/s10534-018-0135-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Accepted: 08/12/2018] [Indexed: 12/18/2022]
Abstract
Brain-derived neurotrophic factor (BDNF) plays a key role in neural development and physiology, as well as in pathological states. Post-mortem studies demonstrate that BDNF is reduced in the brains of patients affected by neurodegenerative diseases. Iron accumulation has also been associated to the pathogenesis of neurodegenerative diseases. In rats, iron overload induces persistent memory deficits, increases oxidative stress and apoptotic markers, and decreases the expression of the synaptic marker, synaptophysin. Deferiprone (DFP) is an oral iron chelator used for the treatment of systemic iron overload disorders, and has recently been tested for Parkinson's disease. Here, we investigated the effects of iron overload on BDNF levels and on mRNA expression of genes encoding TrkB, p75NTR, catalase (CAT) and NQO1. We also aimed at investigating the effects of DFP on iron-induced impairments. Rats received iron or vehicle at postnatal days 12-14 and when adults, received chronic DFP or water (vehicle). Recognition memory was tested 19 days after the beginning of chelation therapy. BDNF measurements and expression analyses in the hippocampus were performed 24 h after the last day of DFP treatment. DFP restored memory and increased hippocampal BDNF levels, ameliorating iron-induced effects. Iron overload in the neonatal period reduced, while treatment with DFP was able to rescue, the expression of antioxidant enzymes CAT and NQO1.
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Affiliation(s)
- Luisa Azambuja Alcalde
- Neurobiology and Developmental Biology Laboratory, Faculty of Biosciences, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, 90619-900, Brazil
| | - Betânia Souza de Freitas
- Neurobiology and Developmental Biology Laboratory, Faculty of Biosciences, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, 90619-900, Brazil
| | - Gustavo Dalto Barroso Machado
- Neurobiology and Developmental Biology Laboratory, Faculty of Biosciences, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, 90619-900, Brazil
| | - Pedro Castilhos de Freitas Crivelaro
- Neurobiology and Developmental Biology Laboratory, Faculty of Biosciences, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, 90619-900, Brazil
| | - Victoria Campos Dornelles
- Neurobiology and Developmental Biology Laboratory, Faculty of Biosciences, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, 90619-900, Brazil
| | - Henrique Gus
- Neurobiology and Developmental Biology Laboratory, Faculty of Biosciences, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, 90619-900, Brazil
| | - Ricardo Tavares Monteiro
- Neurobiology and Developmental Biology Laboratory, Faculty of Biosciences, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, 90619-900, Brazil
| | - Luiza Wilges Kist
- Laboratory of Genomics and Molecular Biology, Faculty of Biosciences, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, 90619-900, Brazil.,Graduate Program in Medicine and Health Sciences, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, 90610-000, Brazil
| | - Mauricio Reis Bogo
- Laboratory of Genomics and Molecular Biology, Faculty of Biosciences, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, 90619-900, Brazil.,Graduate Program in Medicine and Health Sciences, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, 90610-000, Brazil
| | - Nadja Schröder
- Departamento de Fisiologia, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Rua Sarmento Leite, 500, Porto Alegre, RS, 90050-170, Brazil. .,National Institute of Science and Technology for Translational Medicine (INCT-TM), Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq), Brasília, 71605-001, Brazil.
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17
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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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18
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Özbolat G, Yegani AA, Tuli A. Synthesis, characterization and electrochemistry studies of iron(III) complex with curcumin ligand. Clin Exp Pharmacol Physiol 2018; 45:1221-1226. [DOI: 10.1111/1440-1681.12964] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Revised: 04/27/2018] [Accepted: 05/02/2018] [Indexed: 01/25/2023]
Affiliation(s)
- Gülüzar Özbolat
- Department of Biochemistry; Faculty of Medicine; Cukurova University; Adana Turkey
| | - Arash Alizadeh Yegani
- Department of Pharmacology; Faculty of Veterinary; Mustafa Kemal University; Hatay Turkey
| | - Abdullah Tuli
- Department of Biochemistry; Faculty of Medicine; Cukurova University; Adana Turkey
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19
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Harrington JM, Mysore MM, Crumbliss AL. The kinetics of dimethylhydroxypyridinone interactions with iron(iii) and the catalysis of iron(iii) ligand exchange reactions: implications for bacterial iron transport and combination chelation therapies. Dalton Trans 2018; 47:6954-6964. [PMID: 29721567 DOI: 10.1039/c8dt01329b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Many microbes acquire environmental Fe by secreting organic chelators, siderophores, which possess the characteristics of a high and specific binding affinity for iron(iii) that results in the formation of thermodynamically stable, and kinetically inert iron(iii) complexes. Mechanisms to overcome the kinetic inertness include the labilization of iron(iii) by means of ternary complex formation with small chelators. This study describes a kinetic investigation of the labilization of iron(iii) between two stable binding sites, the prototypical siderophore ferrioxamine B and EDTA, by the bidentate siderophore mimic, 1,2-dimethyl-3-hydroxy-4-pyridinone (L1, H(DMHP)). The proposed mechanism is substantiated by investigating the iron(iii) exchange reaction between ferrioxamine B and H(DMHP) to form Fe(DMHP)3, as well as the iron(iii) exchange from Fe(DMHP)3 to EDTA. It is also shown that H(DMHP) is a more effective catalyst for the iron(iii) exchange reaction than bidentate hydroxamate chelators reported previously, supporting the hypothesis that chelator structure and iron(iii) affinity influence low denticity ligand facilitated catalysis of iron(iii) exchange reactions. The results are also discussed in the context of the design and use of combination chelator therapies in the treatment of Fe overload in humans.
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20
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Kaviani S, Izadyar M, Housaindokht MR. DFT investigation on the selective complexation of Fe 3+ and Al 3+ with hydroxypyridinones used for treatment of the aluminium and iron overload diseases. J Mol Graph Model 2018; 80:182-189. [DOI: 10.1016/j.jmgm.2018.01.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 12/21/2017] [Accepted: 01/04/2018] [Indexed: 01/02/2023]
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21
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Cheng C, Chen Y, Cao Y, Ma Y, Hider RC. Synthesis and characterization of methyl substituted 3-hydroxypyridin-4-ones and their complexes with iron(III). CAN J CHEM 2018. [DOI: 10.1139/cjc-2017-0545] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Methyl substituted 3-hydroxypyridin-4(1H)-ones have been synthesized. The pKa values and Fe3+ affinity constants of these ligands were studied. The introduction of an electron-donating methyl group at a different position of pyridinone ring markedly influences the pKa values of 3-hydroxy and 4-oxo groups. The pFe3+ values were also affected and are in the range of 17.6–20.7. The findings can be used to guide a design of 3-hydroxypyridin-4-ones with desirable pKa and pFe3+ values.
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Affiliation(s)
- Chen Cheng
- College of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou, P. R. China, 311402
| | - Yulin Chen
- College of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou, P. R. China, 311402
| | - Yue Cao
- College of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou, P. R. China, 311402
| | - Yongmin Ma
- College of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou, P. R. China, 311402
| | - Robert C. Hider
- Institute of Pharmaceutical Science, King’s College London, Franklin-Wilkins Building, 150 Stamford Street, London, SE1 9NH, UK
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22
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Tewari KM, Eggleston IM. Chemical approaches for the enhancement of 5-aminolevulinic acid-based photodynamic therapy and photodiagnosis. Photochem Photobiol Sci 2018; 17:1553-1572. [DOI: 10.1039/c8pp00362a] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The development of photodynamic therapy and photodiagnosis with 5-aminolevulinic acid presents a number of challenges that can be addressed by applying chemical insight and a range of novel prodrug strategies.
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Affiliation(s)
- Kunal M. Tewari
- Department of Pharmacy and Pharmacology
- University of Bath
- Bath BA2 7AY
- UK
| | - Ian M. Eggleston
- Department of Pharmacy and Pharmacology
- University of Bath
- Bath BA2 7AY
- UK
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23
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Chen YL, Kong X, Xie Y, Hider RC. The interaction of pyridoxal isonicotinoyl hydrazone (PIH) and salicylaldehyde isonicotinoyl hydrazone (SIH) with iron. J Inorg Biochem 2017; 180:194-203. [PMID: 29329026 DOI: 10.1016/j.jinorgbio.2017.12.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Revised: 12/06/2017] [Accepted: 12/10/2017] [Indexed: 01/23/2023]
Abstract
The interaction of pyridoxal isonicotinoyl hydrazone (PIH) and salicylaldehyde isonicotinoyl hydrazone (SIH), two important biologically active chelators, with iron has been investigated by spectrophotometric methods. High iron(III) affinity constants were determined for PIH, logβ2=37.0 and SIH, logβ2=37.6. The associated redox potentials of the iron complexes were determined using cyclic voltammetry at pH7.4 as +130mV (vs normal hydrogen electrode, NHE) for PIH and +136mV(vs NHE) for SIH. These redox potentials are much higher than those corresponding to iron chelators in clinical use, namely deferiprone, -620mV; desferasirox, -600mV and desferrioxamine, -468mV. Although the positive redox potentials of SIH and PIH are similar to that of EDTA, namely +120mV, the iron complexes of these two hydrazone chelators, unlike the iron complex of EDTA, do not redox cycle in the presence of vitamin C. These properties render PIH and SIH as excellent scavengers of iron, under biological conditions. Both SIH and PIH scavenge mononuclear iron(II) and iron(III) rapidly. These fast kinetic properties of the hydrazone-based chelators provide a ready explanation for the adoption of SIH in fluorescence-based methods for the quantification of cytosolic iron(II).
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Affiliation(s)
- Yu-Lin Chen
- Institute of Pharmaceutical Sciences, King's College London, 150 Stamford Street London SE1 9NH, UK
| | - Xiaole Kong
- Institute of Pharmaceutical Sciences, King's College London, 150 Stamford Street London SE1 9NH, UK
| | - Yuanyuan Xie
- Key Laboratory for Green Pharmaceutical Technologies and Related Equipment of Ministry of Education, Zhejiang University of Technology, PR China
| | - Robert C Hider
- Institute of Pharmaceutical Sciences, King's College London, 150 Stamford Street London SE1 9NH, UK.
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24
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Zhou D, Tian Y, Ma Y. Preparation of 5-Functionalised Pyridine Derivatives using a Br/Mg Exchange Reaction: Application to the Synthesis of an Iron-Chelator Prodrug. JOURNAL OF CHEMICAL RESEARCH 2017. [DOI: 10.3184/174751917x15094552081134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A novel preparation of 5-functionalised pyridine derivatives is reported from 5-bromo-4-tosyloxypyridines via a Br/Mg exchange procedure with i-PrMgCl·LiCl, followed by addition of an electrophile. The reaction was carried out under mild conditions and gave good to high yields. The resulting 5-functionalised pyridine derivatives enrich the library of pyridinone-type iron-chelator prodrugs.
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Affiliation(s)
- Dongheng Zhou
- College of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 311402, P.R. China
| | - Yufei Tian
- College of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 311402, P.R. China
| | - Yongmin Ma
- College of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 311402, P.R. China
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25
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Petrović Peroković V, Car Ž, Opačak-Bernardi T, Martin-Kleiner I, Kralj M, Tomić S. In vitro antiproliferative study of novel adamantyl pyridin-4-ones. Mol Divers 2017; 21:881-891. [PMID: 28695468 DOI: 10.1007/s11030-017-9763-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Accepted: 06/30/2017] [Indexed: 12/23/2022]
Abstract
The preparation of several N-aryl-substituted (phenyl, p-methylphenyl, p-methoxyphenyl, p-nitrophenyl, p-aminophenyl, p-hydroxyphenyl) 3-hydroxy-2-methylpyridin-4-ones as well as their adamantyl derivatives is described, and their in vitro antitumor properties were investigated. The compounds were synthesized in good yields using efficient synthetic routes and methods. Prepared derivatives were evaluated in an antiproliferative in vitro study on 4 cancer cell lines, namely HCT 116 (colon carcinoma), H 460 (lung carcinoma), MCF-7 (breast carcinoma) and K562 (chronic myelogenous leukemia). All tested compounds showed antiproliferative activity ranging from moderate to strong on all inspected cell lines with 4 adamantane containing derivatives being active and selective at low micromolar IC[Formula: see text] concentrations on HCT 116, H 460 and MCF-7. LDH cytotoxicity assay revealed that cytotoxic effects occur after 48 h of exposure. It was shown that there was no change in caspase activity in the treated cells, but there were changes in the cell cycle. All treated samples showed reduced number of cells in the S phase with increased G0/G1 (4b, 5a, 5b) and G2/M (4a) phase.
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Affiliation(s)
- V Petrović Peroković
- Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, 10000, Zagreb, Croatia.
| | - Ž Car
- Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, 10000, Zagreb, Croatia
| | - T Opačak-Bernardi
- Faculty of Medicine, Josip Juraj Strossmayer University of Osijek, Cara Hadrijana 10/E, 31000, Osijek, Croatia
| | - I Martin-Kleiner
- Laboratory of Experimental Therapy, Division of Molecular Medicine, Ruđer Bošković Institute, Bijenička 54, 10000, Zagreb, Croatia
| | - M Kralj
- Laboratory of Experimental Therapy, Division of Molecular Medicine, Ruđer Bošković Institute, Bijenička 54, 10000, Zagreb, Croatia
| | - S Tomić
- Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, 10000, Zagreb, Croatia
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26
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Kaviani S, Izadyar M, Housaindokht MR. A DFT study on the complex formation between desferrithiocin and metal ions (Mg2+, Al3+, Ca2+, Mn2+, Fe3+, Co2+, Ni2+, Cu2+, Zn2+). Comput Biol Chem 2017; 67:114-121. [DOI: 10.1016/j.compbiolchem.2016.12.012] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Revised: 11/15/2016] [Accepted: 12/29/2016] [Indexed: 01/25/2023]
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27
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Amiri A, Mirhoseiny Z. Beneficial role of deferasirox and deferiprone in the mobilization of arsenic and recovery of iron in rat tissues. MAIN GROUP CHEMISTRY 2017. [DOI: 10.3233/mgc-160215] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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28
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Nurchi VM, Crisponi G, Lachowicz JI, Medici S, Peana M, Zoroddu MA. Chemical features of in use and in progress chelators for iron overload. J Trace Elem Med Biol 2016; 38:10-18. [PMID: 27365273 DOI: 10.1016/j.jtemb.2016.05.010] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Revised: 05/20/2016] [Accepted: 05/30/2016] [Indexed: 01/19/2023]
Abstract
An excessive amount of iron may become extremely toxic both for its ability to generate reactive oxygen species, and for the lack of regulatory mechanisms for iron excretion in humans. Chelation therapy has been introduced in clinical practice in the 1970's to defend thalassemia patients from the effects of iron overload and it has dramatically changed both life expectancy and quality of life. The disadvantages of the drugs in clinical use make the research for new, more suitable iron chelating agents, urgent. This review defines the requirements of an iron chelator, then points out the principal chemical features of the iron chelators in use. Finally, a survey on the last ten years of the literature relative to iron chelators is done, and the most interesting ligands are presented, with particular emphasis to those that reached clinical trials.
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Affiliation(s)
- Valeria Marina Nurchi
- Department of Chemical and Geological Sciences, University of Cagliari, Cittadella Universitaria, 09042 Monserrato-Cagliari, Italy.
| | - Guido Crisponi
- Department of Chemical and Geological Sciences, University of Cagliari, Cittadella Universitaria, 09042 Monserrato-Cagliari, Italy
| | - Joanna I Lachowicz
- Department of Chemical and Geological Sciences, University of Cagliari, Cittadella Universitaria, 09042 Monserrato-Cagliari, Italy
| | - Serenella Medici
- Department of Chemistry and Pharmacy, University of Sassari, Via Vienna 2, 07100 Sassari, Italy
| | - Massimiliano Peana
- Department of Chemistry and Pharmacy, University of Sassari, Via Vienna 2, 07100 Sassari, Italy
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29
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Kaviani S, Izadyar M, Housaindokht MR. Solvent and spin state effects on molecular structure, IR spectra, binding energies and quantum chemical reactivity indices of deferiprone–ferric complex: DFT study. Polyhedron 2016. [DOI: 10.1016/j.poly.2016.06.041] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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30
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Elincx-Benizri S, Glik A, Merkel D, Arad M, Freimark D, Kozlova E, Cabantchik I, Hassin-Baer S. Clinical Experience With Deferiprone Treatment for Friedreich Ataxia. J Child Neurol 2016; 31:1036-40. [PMID: 27029487 DOI: 10.1177/0883073816636087] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Accepted: 12/10/2015] [Indexed: 12/24/2022]
Abstract
Friedreich ataxia is an inherited disorder characterized by degeneration of the peripheral and central nervous system and hypertrophic cardiomyopathy. Homozygous mutations in the frataxine (FXN) gene reduce expression of frataxin and cause accumulation of iron in the mitochondria. Deferiprone, an oral iron chelator, has been shown effective in cell and animal models of Friedreich ataxia. The results of a 6-month randomized, double blind placebo-controlled study suggested that deferiprone 20 mg/kg/day may reduce disease progression. The authors present their experience of 5 Friedreich ataxia patients treated with deferiprone (20 mg/kg/day), in addition to idebenone treatment, followed over a period of 10-24 months, under off-label authorization. The patients were monitored for laboratory parameters, cardiac assessment, neurological evaluations, and quality of life. The authors conclude that combined therapy of a low dose of deferiprone with idebenone is relatively safe, might improve neurological function, and seems to improve heart hypertrophy, warranting further studies.
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Affiliation(s)
- Sandra Elincx-Benizri
- Movement Disorders Institute, Department of Neurology, Sagol Neuroscience Center, Chaim Sheba Medical Center, Tel-Hashomer, Ramat-Gan, Israel
| | - Amir Glik
- Cognitive Neurology Clinic and Department of Neurology, Rabin Medical Center, Beilinson Hospital, Petah Tikva, Israel
| | - Drorit Merkel
- Division of Hematology, Chaim Sheba Medical Center, Ramat-Gan, Israel Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Michael Arad
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel Leviev Heart Center, Chaim Sheba Medical Center, Tel-Hashomer, Ramat-Gan, Israel
| | - Dov Freimark
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel Leviev Heart Center, Chaim Sheba Medical Center, Tel-Hashomer, Ramat-Gan, Israel
| | - Evgenia Kozlova
- Movement Disorders Institute, Department of Neurology, Sagol Neuroscience Center, Chaim Sheba Medical Center, Tel-Hashomer, Ramat-Gan, Israel
| | - Ioav Cabantchik
- Department of Biological Chemistry, Alexander Silberman Institute of Life Sciences, Hebrew University of Jerusalem Givat Ram, Jerusalem, Israel
| | - Sharon Hassin-Baer
- Movement Disorders Institute, Department of Neurology, Sagol Neuroscience Center, Chaim Sheba Medical Center, Tel-Hashomer, Ramat-Gan, Israel Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
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Xie YY, Lu Z, Kong XL, Zhou T, Bansal S, Hider R. Systematic comparison of the mono-, dimethyl- and trimethyl 3-hydroxy-4(1H)-pyridones - Attempted optimization of the orally active iron chelator, deferiprone. Eur J Med Chem 2016; 115:132-40. [PMID: 27014847 DOI: 10.1016/j.ejmech.2016.03.014] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2015] [Revised: 03/03/2016] [Accepted: 03/04/2016] [Indexed: 01/19/2023]
Abstract
A range of close analogues of deferiprone have been synthesised. The group includes mono-, di- and tri-methyl-3-hydroxy-4(1H)-pyridones. These compounds were found to possess similar pFe(3+) values to that of deferiprone, with the exception of the 2.5-dimethylated derivatives. Surprisingly the NH-containing hydroxy-4(1H)-pyridones were found to be marginally more lipophilic than the corresponding N-Me containing analogues. This same group are also metabolised less efficiently by Phase 1 hydroxylating enzymes than the corresponding N-Me analogues. As result of this study, three compounds have been identified for further investigation centred on neutropenia and agranulocytosis.
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Affiliation(s)
- Yuan-Yuan Xie
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, China
| | - Zidong Lu
- Institute of Pharmaceutical Science, King's College London, UK
| | - Xiao-Le Kong
- Institute of Pharmaceutical Science, King's College London, UK
| | - Tao Zhou
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, China
| | - Sukhi Bansal
- Institute of Pharmaceutical Science, King's College London, UK
| | - Robert Hider
- Institute of Pharmaceutical Science, King's College London, UK.
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Li J, Abbate V, Jurach J, Zhang G, Kong X, Hider RC. 5-Hydroxypyran-4-one derivatives as potential therapeutic iron-chelating agents. ChemistrySelect 2016. [DOI: 10.1002/slct.201600022] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Junpei Li
- Hefei National Laboratory for Physical Sciences at the Microscale; University of Science and Technology of China, Hefei; Anhui 230026 P. R. China
| | - Vincenzo Abbate
- Institute of Pharmaceutical Science; King's College London, Franklin-Wilkins Building; 150 Stamford Street London, SE1 9NH UK
| | - Jagoda Jurach
- Institute of Pharmaceutical Science; King's College London, Franklin-Wilkins Building; 150 Stamford Street London, SE1 9NH UK
| | - Guoqing Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale; University of Science and Technology of China, Hefei; Anhui 230026 P. R. China
| | - Xiaole Kong
- Institute of Pharmaceutical Science; King's College London, Franklin-Wilkins Building; 150 Stamford Street London, SE1 9NH UK
| | - Robert C. Hider
- Institute of Pharmaceutical Science; King's College London, Franklin-Wilkins Building; 150 Stamford Street London, SE1 9NH UK
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Dai XY, Zhang MX, Wei XY, Hider RC, Zhou T. Novel Multifunctional Hydroxypyridinone Derivatives as Potential Shrimp Preservatives. FOOD BIOPROCESS TECH 2016. [DOI: 10.1007/s11947-016-1694-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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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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Ricchi P, Marsella M. Profile of deferasirox for the treatment of patients with non-transfusion-dependent thalassemia syndromes. Drug Des Devel Ther 2016; 9:6475-82. [PMID: 26719673 PMCID: PMC4687615 DOI: 10.2147/dddt.s40694] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
It has been clearly shown that iron overload adds progressively significant morbidity and mortality in patients with non-transfusion-dependent thalassemia (NTDT). The lack of physiological mechanisms to eliminate the excess of iron requires effective iron chelation therapy. The reduced compliance to deferoxamine and the risk of severe hematological adverse events during deferiprone treatment have limited the use of both these drugs to correct iron imbalance in NTDT. According to the principles of evidence-based medicine, following the demonstration of the effectiveness and the safety of deferasirox (Exjade®) in a prospective, randomized, controlled trial, deferasirox was approved by the US Food and Drug Administration in May 2013 for the treatment of iron overload associated with NTDT. This review, assessing the available scientific literature, will focus on the profile of DFX in the treatment of non-transfusional hemosiderosis in patients with NTDT.
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Affiliation(s)
- Paolo Ricchi
- UOSD Malattie Rare del Globulo Rosso, Azienda Ospedaliera di Rilievo Nazionale "Antonio Cardarelli", Naples, Italy
| | - Maria Marsella
- UOSD Malattie Rare del Globulo Rosso, Azienda Ospedaliera di Rilievo Nazionale "Antonio Cardarelli", Naples, Italy ; UOC Pediatria, Azienda Ospedaliera di Rilievo Nazionale G. Rummo, Benevento, Italy
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Amiri A, Rahimipour M. Comparative effects of deferasirox and deferiprone in the treatment of copper intoxication in rats. TOXIN REV 2015. [DOI: 10.3109/15569543.2015.1120751] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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37
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Design and synthesis of novel pegylated iron chelators with decreased metabolic rate. Future Med Chem 2015; 7:2439-49. [DOI: 10.4155/fmc.15.154] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Background: Deferiprone has proved to be a successful iron selective chelator in a range of pathologies. However, its use is limited by rapid Phase II metabolism, necessitating the administration of large doses. In an attempt to modify metabolic rate of this class of compounds, a range of pegylated 3-hydroxypyridin-4-ones has been synthesized. Experimental: The synthetic route in which the polyethylene glycol counterparts are introduced to a protected pyran ring involves either a Williamson etherification reaction or direct addition leading to polyethylene glycol-containing precursors. Results & discussion: The introduction of the pegylated substituent was found to lead to a relatively low rate of metabolism for some of the derivatives (6a, 6b, 8a and 8b), offering a possible improvement over deferiprone.
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Piperazine derivatives as iron chelators: a potential application in neurobiology. Biometals 2015; 28:1043-61. [DOI: 10.1007/s10534-015-9889-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Accepted: 10/16/2015] [Indexed: 11/26/2022]
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Ma Y, Hider RC. Novel synthetic approach to fluoro- and amido-disubstituted 3-hydroxypyridin-4-ones. J Fluor Chem 2015. [DOI: 10.1016/j.jfluchem.2015.02.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Chen YL, Chen J, Ma Y, Hider RC. The Synthesis of 5-Functional 3-Hydroxypyridin-4-ones and Their Impact on the Chelating Properties of the Ligands. CHEM LETT 2015. [DOI: 10.1246/cl.141133] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Yu-Lin Chen
- College of Pharmaceutical Sciences, Zhejiang Chinese Medical University
| | - Jing Chen
- College of Pharmaceutical Sciences, Zhejiang Chinese Medical University
| | - Yongmin Ma
- College of Pharmaceutical Sciences, Zhejiang Chinese Medical University
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Crisponi G, Nurchi VM, Lachowicz JI, Crespo-Alonso M, Zoroddu MA, Peana M. Kill or cure: Misuse of chelation therapy for human diseases. Coord Chem Rev 2015. [DOI: 10.1016/j.ccr.2014.04.023] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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The iron-regulatory hormone hepcidin: A possible therapeutic target? Pharmacol Ther 2015; 146:35-52. [DOI: 10.1016/j.pharmthera.2014.09.004] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2014] [Accepted: 09/02/2014] [Indexed: 01/19/2023]
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Pangjit K, Banjerdpongchai R, Phisalaphong C, Fucharoen S, Xie YY, Lu ZD, Hider RC, Srichairatanakool S. Characterisation of a novel oral iron chelator: 1-(N-Acetyl-6-Aminohexyl)-3-Hydroxy-2-Methylpyridin-4-one. ACTA ACUST UNITED AC 2015; 67:703-13. [PMID: 25627251 DOI: 10.1111/jphp.12373] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Accepted: 11/02/2014] [Indexed: 01/19/2023]
Abstract
OBJECTIVES Desferrioxamine (DFO), deferiprone (DFP) and deferasirox (DFX) are iron chelators currently in clinical use for the treatment of iron overload. Due to difficulties with administration and associated side effects with these three molecules, the search continues for an efficient nontoxic orally active iron chelator. This communication describes the properties of one such candidate, 1-(N-acetyl-6-aminohexyl)-3-hydroxy-2-methylpyridin-4-one (CM1). METHODS Physicochemical characterisation techniques, including partition coefficient, pKa values and logK values for iron(III). Iron scavenging assays, from iron citrate, nontransferrin bound iron and iron-loaded rats. Cytotoxicity studies using white cells, hepatocytes and cardiomyocytes. KEY FINDINGS CM1 possesses high affinity and selectivity for iron(III) and a suitable partition coefficient to permeate membranes. CM1 forms a neutral 3 : 1 iron(III) complex under physiological conditions and so, it is predicted to be capable of entry into mammalian cells to scavenge excess intracellular iron and to efflux from cells as the neutral 3 : 1 complex. CM1 is demonstrated to be orally active and to possess a higher efficacy than DFP in rats. CM1 displays no toxicity to a range of cell types. CONCLUSION The above promising studies will be extended to monitor the pharmacokinetics and metabolism of CM1. CM1 is an excellent candidate for phase 1 clinical trials.
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Affiliation(s)
- Kanjana Pangjit
- Department of Biochemistry, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand; College of Medicine and Public Health, Ubon Ratchathani University, Chiang Mai, Thailand
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Hider RC, Kong X, Abbate V, Harland R, Conlon K, Luker T. Deferitazole, a new orally active iron chelator. Dalton Trans 2015; 44:5197-204. [DOI: 10.1039/c5dt00063g] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Deferitazole possesses a high affinity and selectivity for iron(iii), forming an equilibrium mixture of two FeIII(deferitazole)2complexes, under biological conditions.
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Affiliation(s)
| | - Xiaole Kong
- Institute of Pharmaceutical Science
- King's College
- London
- UK
| | | | | | - Kelly Conlon
- Shire Pharmaceutical Development Ltd
- Basingstoke
- UK
| | - Tim Luker
- Shire Pharmaceutical Development Ltd
- Basingstoke
- UK
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Kell DB, Pretorius E. Serum ferritin is an important inflammatory disease marker, as it is mainly a leakage product from damaged cells. Metallomics 2014; 6:748-73. [PMID: 24549403 DOI: 10.1039/c3mt00347g] [Citation(s) in RCA: 368] [Impact Index Per Article: 36.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
"Serum ferritin" presents a paradox, as the iron storage protein ferritin is not synthesised in serum yet is to be found there. Serum ferritin is also a well known inflammatory marker, but it is unclear whether serum ferritin reflects or causes inflammation, or whether it is involved in an inflammatory cycle. We argue here that serum ferritin arises from damaged cells, and is thus a marker of cellular damage. The protein in serum ferritin is considered benign, but it has lost (i.e. dumped) most of its normal complement of iron which when unliganded is highly toxic. The facts that serum ferritin levels can correlate with both disease and with body iron stores are thus expected on simple chemical kinetic grounds. Serum ferritin levels also correlate with other phenotypic readouts such as erythrocyte morphology. Overall, this systems approach serves to explain a number of apparent paradoxes of serum ferritin, including (i) why it correlates with biomarkers of cell damage, (ii) why it correlates with biomarkers of hydroxyl radical formation (and oxidative stress) and (iii) therefore why it correlates with the presence and/or severity of numerous diseases. This leads to suggestions for how one might exploit the corollaries of the recognition that serum ferritin levels mainly represent a consequence of cell stress and damage.
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Affiliation(s)
- Douglas B Kell
- School of Chemistry and The Manchester Institute of Biotechnology, The University of Manchester, 131, Princess St, Manchester M1 7DN, Lancs, UK.
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46
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Pretorius E, Swanepoel AC, Buys AV, Vermeulen N, Duim W, Kell DB. Eryptosis as a marker of Parkinson's disease. Aging (Albany NY) 2014; 6:788-819. [PMID: 25411230 PMCID: PMC4247384 DOI: 10.18632/aging.100695] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2014] [Accepted: 10/24/2014] [Indexed: 12/20/2022]
Abstract
A major trend in recent Parkinson's disease (PD) research is the investigation of biological markers that could help in identifying at-risk individuals or to track disease progression and response to therapies. Central to this is the knowledge that inflammation is a known hallmark of PD and of many other degenerative diseases. In the current work, we focus on inflammatory signalling in PD, using a systems approach that allows us to look at the disease in a more holistic way. We discuss cyclooxygenases, prostaglandins, thromboxanes and also iron in PD. These particular signalling molecules are involved in PD pathophysiology, but are also very important in an aberrant coagulation/hematology system. We present and discuss a hypothesis regarding the possible interaction of these aberrant signalling molecules implicated in PD, and suggest that these molecules may affect the erythrocytes of PD patients. This would be observable as changes in the morphology of the RBCs and of PD patients relative to healthy controls. We then show that the RBCs of PD patients are indeed rather dramatically deranged in their morphology, exhibiting eryptosis (a kind of programmed cell death). This morphological indicator may have useful diagnostic and prognostic significance.
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Affiliation(s)
- Etheresia Pretorius
- Department of Physiology, Faculty of Health Sciences, University of Pretoria, Arcadia 0007, South Africa
| | - Albe C Swanepoel
- Department of Physiology, Faculty of Health Sciences, University of Pretoria, Arcadia 0007, South Africa
| | - Antoinette V Buys
- Microscopy and Microanalysis Unit, University of Pretoria, Arcadia 0007, South Africa
| | - Natasha Vermeulen
- Department of Physiology, Faculty of Health Sciences, University of Pretoria, Arcadia 0007, South Africa
| | - Wiebren Duim
- Department of Neurology Faculty of Health Sciences, University of Pretoria, Arcadia 0007, South Africa
| | - Douglas B Kell
- School of Chemistry and The Manchester Institute of Biotechnology, The University of Manchester, Manchester M1 7DN, Lancs, UK
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48
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Crisponi G, Nurchi VM, Zoroddu MA. Iron Chelating Agents for Iron Overload Diseases. THALASSEMIA REPORTS 2014. [DOI: 10.4081/thal.2014.2046] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Although iron is an essential element for life, an excessive amount may become extremely toxic both for its ability to generate reactive oxygen species, and for the lack in humans of regulatory mechanisms for iron excretion. Chelation therapy has been introduced in clinical practice in the seventies of last century to defend thalassemic patients from the effects of iron overload and, in spite of all its limitations, it has dramatically changed both life expectancy and quality of life of patients. It has to be considered that the drugs in clinical use present some disadvantages too, this makes urgent new more suitable chelating agents. The requirements of an iron chelator have been better and better defined over the years and in this paper they will be discussed in detail. As a final point the most interesting ligands studied in the last years will be presented.
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Devos D, Moreau C, Devedjian JC, Kluza J, Petrault M, Laloux C, Jonneaux A, Ryckewaert G, Garçon G, Rouaix N, Duhamel A, Jissendi P, Dujardin K, Auger F, Ravasi L, Hopes L, Grolez G, Firdaus W, Sablonnière B, Strubi-Vuillaume I, Zahr N, Destée A, Corvol JC, Pöltl D, Leist M, Rose C, Defebvre L, Marchetti P, Cabantchik ZI, Bordet R. Targeting chelatable iron as a therapeutic modality in Parkinson's disease. Antioxid Redox Signal 2014; 21:195-210. [PMID: 24251381 PMCID: PMC4060813 DOI: 10.1089/ars.2013.5593] [Citation(s) in RCA: 441] [Impact Index Per Article: 44.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
AIMS The pathophysiological role of iron in Parkinson's disease (PD) was assessed by a chelation strategy aimed at reducing oxidative damage associated with regional iron deposition without affecting circulating metals. Translational cell and animal models provided concept proofs and a delayed-start (DS) treatment paradigm, the basis for preliminary clinical assessments. RESULTS For translational studies, we assessed the effect of oxidative insults in mice systemically prechelated with deferiprone (DFP) by following motor functions, striatal dopamine (HPLC and MRI-PET), and brain iron deposition (relaxation-R2*-MRI) aided by spectroscopic measurements of neuronal labile iron (with fluorescence-sensitive iron sensors) and oxidative damage by markers of protein, lipid, and DNA modification. DFP significantly reduced labile iron and biological damage in oxidation-stressed cells and animals, improving motor functions while raising striatal dopamine. For a pilot, double-blind, placebo-controlled randomized clinical trial, early-stage Parkinson's patients on stabilized dopamine regimens enrolled in a 12-month single-center study with DFP (30 mg/kg/day). Based on a 6-month DS paradigm, early-start patients (n=19) compared to DS patients (n=18) (37/40 completed) responded significantly earlier and sustainably to treatment in both substantia nigra iron deposits (R2* MRI) and Unified Parkinson's Disease Rating Scale motor indicators of disease progression (p<0.03 and p<0.04, respectively). Apart from three rapidly resolved neutropenia cases, safety was maintained throughout the trial. INNOVATION A moderate iron chelation regimen that avoids changes in systemic iron levels may constitute a novel therapeutic modality for PD. CONCLUSIONS The therapeutic features of a chelation modality established in translational models and in pilot clinical trials warrant comprehensive evaluation of symptomatic and/or disease-modifying potential of chelation in PD.
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Affiliation(s)
- David Devos
- 1 Department of Medical Pharmacology, Faculté de Médecine Lille2, Lille Nord de France University , CHU Lille, Lille, France
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Car Ž, Hrenar T, Petrović Peroković V, Ribić R, Seničar M, Tomić S. MannosylatedN-Aryl Substituted 3-Hydroxypyridine-4-Ones: Synthesis, Hemagglutination Inhibitory Properties, and Molecular Modeling. Chem Biol Drug Des 2014; 84:393-401. [DOI: 10.1111/cbdd.12329] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2013] [Revised: 02/19/2014] [Accepted: 03/12/2014] [Indexed: 01/30/2023]
Affiliation(s)
- Željka Car
- Department of Chemistry; Faculty of Science; University of Zagreb; Horvatovac 102a HR-10000 Zagreb Croatia
| | - Tomica Hrenar
- Department of Chemistry; Faculty of Science; University of Zagreb; Horvatovac 102a HR-10000 Zagreb Croatia
| | - Vesna Petrović Peroković
- Department of Chemistry; Faculty of Science; University of Zagreb; Horvatovac 102a HR-10000 Zagreb Croatia
| | - Rosana Ribić
- Department of Chemistry; Faculty of Science; University of Zagreb; Horvatovac 102a HR-10000 Zagreb Croatia
| | - Mateja Seničar
- Department of Chemistry; Faculty of Science; University of Zagreb; Horvatovac 102a HR-10000 Zagreb Croatia
| | - Srđanka Tomić
- Department of Chemistry; Faculty of Science; University of Zagreb; Horvatovac 102a HR-10000 Zagreb Croatia
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