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Dharmasivam M, Kaya B, Wijesinghe T, Gholam Azad M, Gonzálvez MA, Hussaini M, Chekmarev J, Bernhardt PV, Richardson DR. Designing Tailored Thiosemicarbazones with Bespoke Properties: The Styrene Moiety Imparts Potent Activity, Inhibits Heme Center Oxidation, and Results in a Novel "Stealth Zinc(II) Complex". J Med Chem 2023; 66:1426-1453. [PMID: 36649565 DOI: 10.1021/acs.jmedchem.2c01600] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
A novel, potent, and selective antitumor agent, namely (E)-3-phenyl-1-(2-pyridinyl)-2-propen-1-one 4,4-dimethyl-3-thiosemicarbazone (PPP44mT), and its analogues were synthesized and characterized and displayed strikingly distinctive properties. This activity was mediated by the inclusion of a styrene moiety, which through steric and electrochemical mechanisms prevented deleterious oxy-myoglobin or oxy-hemoglobin oxidation relative to other potent thiosemicarbazones, i.e., di-2-pyridylketone-4-cyclohexyl-4-methyl-3-thiosemicarbazone (DpC) or di-2-pyridylketone-4,4-dimethyl-3-thiosemicarbazone (Dp44mT). Structure-activity relationship analysis demonstrated specific tuning of PPP44mT electrochemistry further inhibited oxy-myoglobin or oxy-hemoglobin oxidation. Both PPP44mT and its Cu(II) complexes showed conspicuous almost immediate cytotoxicity against SK-N-MC tumor cells (within 3 h). In contrast, [Zn(PPP44mT)2] demonstrated a pronounced delay in activity, taking 48 h before marked antiproliferative efficacy was apparent. As such, [Zn(PPP44mT)2] was designated as a "stealth Zn(II) complex" that overcomes the near immediate cytotoxicity of PPP44mT or its copper complexes. Upon examination of the suppression of oncogenic signaling, [Zn(PPP44mT)2] was superior at inhibiting cyclin D1 expression compared to DpC or Dp44mT.
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Affiliation(s)
- Mahendiran Dharmasivam
- Centre for Cancer Cell Biology and Drug Discovery, Griffith Institute for Drug Discovery, Griffith University, Nathan4111, Australia
| | - Busra Kaya
- Centre for Cancer Cell Biology and Drug Discovery, Griffith Institute for Drug Discovery, Griffith University, Nathan4111, Australia.,Department of Chemistry, Istanbul University-Cerrahpasa, Avcilar, 34320Istanbul, Turkey
| | - Tharushi Wijesinghe
- Centre for Cancer Cell Biology and Drug Discovery, Griffith Institute for Drug Discovery, Griffith University, Nathan4111, Australia
| | - Mahan Gholam Azad
- Centre for Cancer Cell Biology and Drug Discovery, Griffith Institute for Drug Discovery, Griffith University, Nathan4111, Australia
| | - Miguel A Gonzálvez
- School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane4072, Australia
| | - Mohammad Hussaini
- Centre for Cancer Cell Biology and Drug Discovery, Griffith Institute for Drug Discovery, Griffith University, Nathan4111, Australia
| | - Jason Chekmarev
- Centre for Cancer Cell Biology and Drug Discovery, Griffith Institute for Drug Discovery, Griffith University, Nathan4111, Australia
| | - Paul V Bernhardt
- School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane4072, Australia
| | - Des R Richardson
- Centre for Cancer Cell Biology and Drug Discovery, Griffith Institute for Drug Discovery, Griffith University, Nathan4111, Australia.,Department of Pathology and Biological Responses, Nagoya University Graduate School of Medicine, Nagoya466-8550, Japan
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2
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Ramzy E, Ibrahim MM, El-Mehasseb IM, Ramadan AEMM, Elshami FI, Shaban SY, van Eldik R. Synthesis, Biophysical Interaction of DNA/BSA, Equilibrium and Stopped-Flow Kinetic Studies, and Biological Evaluation of bis(2-Picolyl)amine-Based Nickel(II) Complex. Biomimetics (Basel) 2022; 7:172. [PMID: 36412701 PMCID: PMC9680484 DOI: 10.3390/biomimetics7040172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 10/17/2022] [Accepted: 10/19/2022] [Indexed: 12/14/2022] Open
Abstract
Reaction of bis(2-picolyl)amine (BPA) with Ni(II) salt yielded [(BPA)NiCl2(H2O)] (NiBPA). The Ni(II) in NiBPA bound to a BPA ligand, two chloride, and one aqua ligands. Because most medications inhibit biological processes by binding to a specific protein, the stopped-flow technique was used to investigate DNA/protein binding in-vitro, and a mechanism was proposed. NiBPA binds to DNA/protein more strongly than BPA via a static quenching mechanism. Using the stopped-flow technique, a mechanism was proposed. BSA interacts with BPA via a fast reversible step followed by a slow irreversible step, whereas NiBPA interacts via two reversible steps. DNA, on the other hand, binds to BPA and NiBPA via the same mechanism through two reversible steps. Although BSA interacts with NiBPA much faster, NiBPA has a much higher affinity for DNA (2077 M) than BSA (30.3 M). Compared to NiBPA, BPA was found to form a more stable BSA complex. When BPA and NiBPA bind to DNA, the Ni(II) center was found to influence the rate but not the mechanism, whereas, for BSA, the Ni(II) center was found to change both the mechanism and the rate. Additionally, NiBPA exhibited significant cytotoxicity and antibacterial activity, which is consistent with the binding constants but not the kinetic stability. This shows that in our situation, biological activity is significantly more influenced by binding constants than by kinetic stability. Due to its selectivity and cytotoxic activity, complex NiBPA is anticipated to be used in medicine.
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Affiliation(s)
- Esraa Ramzy
- Chemistry Department, Faculty of Science, Kafrelsheikh University, Kafrelsheikh 33516, Egypt
| | - Mohamed M. Ibrahim
- Chemistry Department, Faculty of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Ibrahim M. El-Mehasseb
- Chemistry Department, Faculty of Science, Kafrelsheikh University, Kafrelsheikh 33516, Egypt
| | | | - Fawzia I. Elshami
- Chemistry Department, Faculty of Science, Kafrelsheikh University, Kafrelsheikh 33516, Egypt
| | - Shaban Y. Shaban
- Chemistry Department, Faculty of Science, Kafrelsheikh University, Kafrelsheikh 33516, Egypt
| | - Rudi van Eldik
- Chemistry Department, Faculty of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
- Department of Chemistry and Pharmacy, University of Erlangen-Nuremberg, 91058 Erlangen, Germany
- Faculty of Chemistry, Nicolaus Copernicus University in Torun, 87-100 Torun, Poland
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3
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Antibacterial Activity of Co(III) Complexes with Diamine Chelate Ligands against a Broad Spectrum of Bacteria with a DNA Interaction Mechanism. Pharmaceutics 2021; 13:pharmaceutics13070946. [PMID: 34202624 PMCID: PMC8309019 DOI: 10.3390/pharmaceutics13070946] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 06/18/2021] [Accepted: 06/19/2021] [Indexed: 11/21/2022] Open
Abstract
Cobalt coordination complexes are very attractive compounds for their therapeutic uses as antiviral, antibacterial, antifungal, antiparasitic, or antitumor agents. Two Co(III) complexes with diamine chelate ligands ([CoCl2(dap)2]Cl (1) and [CoCl2(en)2]Cl (2)) (where dap = 1,3-diaminopropane, en = ethylenediamine) were synthesized and characterized by elemental analysis, an ATR technique, and a scan method and sequentially tested against Gram-positive and Gram-negative bacteria. The minimum inhibitory concentration results revealed that anaerobic and microaerophilic bacteria were found to be the most sensitive; the serial passages assay presented insignificant increases in bacterial resistance to both compounds after 20 passages. The synergy assay showed a significant reduction in the MIC values of nalidixic acid when combined with Compounds (1) or (2). The assessment of cell damage by the complexes was performed using scanning electron microscopy, transmission electron microscopy, and confocal microscopy, which indicated cell membrane permeability, deformation, and altered cell morphology. DNA interaction studies of the Co(III) complexes with plasmid pBR322 using spectrophotometric titration methods revealed that the interaction between Complex (1) or (2) and DNA suggested an electrostatic and intercalative mode of binding, respectively. Furthermore, the DNA cleavage ability of compounds by agarose gel electrophoresis showed nuclease activity for both complexes. The results suggest that the effect of the tested compounds against bacteria can be complex.
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Singh NK, Kumbhar AA, Pokharel YR, Yadav PN. Anticancer potency of copper(II) complexes of thiosemicarbazones. J Inorg Biochem 2020; 210:111134. [DOI: 10.1016/j.jinorgbio.2020.111134] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 05/31/2020] [Accepted: 06/06/2020] [Indexed: 12/20/2022]
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5
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Bisceglie F, Orsoni N, Pioli M, Bonati B, Tarasconi P, Rivetti C, Amidani D, Montalbano S, Buschini A, Pelosi G. Cytotoxic activity of copper(ii), nickel(ii) and platinum(ii) thiosemicarbazone derivatives: interaction with DNA and the H2A histone peptide. Metallomics 2020; 11:1729-1742. [PMID: 31502621 DOI: 10.1039/c9mt00166b] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Metal complexes still represent promising pharmacological tools in the development of new anticancer drugs. Bis(citronellalthiosemicarbazonate)nickel(ii) is a metal compound extremely effective against leukemic and NCS cancer cell lines. Preliminary experiments performed with this compound and with its Cu(ii) and Pt(ii) analogues evidenced alterations, detectable by comet assay, in the DNA of treated U937 cells. In addition, [Cu(tcitr)2] and [Pt(tcitr)2] were also able to induce gene mutations and produce frameshift events. To gain further insights into the mechanism of action of these metal compounds, we carried out a multidisciplinary study to investigate whether their biological activity can be ascribed to the direct interaction with DNA or with chromatin. The DNA interaction was investigated by means of CD and UV-Vis spectroscopic techniques and by AFM, whereas the chromatin interaction was studied by analyzing the effects of the compounds on the structure of a peptide that mimicks the potential metal binding site in the "C-tail" region of histone H2A by means of NMR, CD, UV-Vis and MS. The intensities of the effects induced by the metal compounds on the peptide follow the order [Ni(tcitr)2] > [Pt(tcitr)2] ≫ [Cu(tcitr)2]. From the AFM data, a remarkable DNA compaction was observed in the presence of [Pt(tcitr)2], while [Ni(tcitr)2] causes the formation of large interlaced DNA aggregates.
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Affiliation(s)
- Franco Bisceglie
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parco Area delle Scienze 11/a, 43124 Parma, Italy.
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Alcaraz R, Muñiz P, Cavia M, Palacios Ó, Samper KG, Gil-García R, Jiménez-Pérez A, García-Tojal J, García-Girón C. Thiosemicarbazone-metal complexes exhibiting cytotoxicity in colon cancer cell lines through oxidative stress. J Inorg Biochem 2020; 206:110993. [PMID: 32088593 DOI: 10.1016/j.jinorgbio.2020.110993] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 01/03/2020] [Accepted: 01/05/2020] [Indexed: 02/07/2023]
Abstract
Colorectal cancer is the third most common type of cancer and has a high incidence in developed countries. At present, specific treatments are being required to allow individualized therapy depending on the molecular alteration on which the drug may act. The aim of this project is to evaluate whether HPTSC and HPTSC* thiosemicarbazones (HPTSC = pyridine-2-carbaldehyde thiosemicarbazone and HPTSC* = pyridine-2-carbaldehyde 4N-methylthiosemicarbazone), and their complexes with different transition metal ions as Cu(II), Fe(III) and Co(III), have antitumor activity in colon cancer cells (HT-29 and SW-480), that have different oncogenic characteristics. Cytotoxicity was evaluated and the involvement of oxidative stress in its mechanism of action was analyzed by quantifying the superoxide dismutase activity, redox state by quantification of the thioredoxin levels and reduced/oxidized glutathione rate and biomolecules damage. The apoptotic effect was evaluated by measurements of the levels of caspase 9 and 3 and the index of histones. All the metal-thiosemicarbazones have antitumor activity mediated by oxidative stress. The HPTSC*-Cu was the compound that showed the best antitumor and apoptotic characteristics for the cell line SW480, that is KRAS gene mutated.
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Affiliation(s)
- Raquel Alcaraz
- Unidad de Investigación, Hospital Universitario de Burgos, Avd Islas Baleares, 3, 09006 Burgos, Spain.
| | - Pilar Muñiz
- Departamento de Biotecnología y Ciencia de los Alimentos, Universidad de Burgos, Plaza Misael Bañuelos s/n, 09001 Burgos, Spain.
| | - Mónica Cavia
- Departamento de Biotecnología y Ciencia de los Alimentos, Universidad de Burgos, Plaza Misael Bañuelos s/n, 09001 Burgos, Spain
| | - Óscar Palacios
- Departament de Química, Universitat Autònoma de Barcelona, E-08193 Cerdanyola del Vallès, Barcelona, Spain
| | - Katia G Samper
- Departament de Química, Universitat Autònoma de Barcelona, E-08193 Cerdanyola del Vallès, Barcelona, Spain
| | - Rubén Gil-García
- Departamento de Química, Universidad de Burgos, 09001 Burgos, Spain
| | | | | | - Carlos García-Girón
- Servicio de Oncología Médica, Hospital Universitario de Burgos, Avd Islas Baleares, 3, 09006 Burgos, Spain
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7
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Elshami FI, Ramadan AEM, Ibrahim MM, El‐Mehasseb IM, Al‐Juaid S, Shaban SY. Metformin Containing Nickel (II) Complexes: Synthesis, Structural Characterization, Binding and Kinetic Interactions with BSA, Antibacterial and in‐vitro Cytotoxicity Studies. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5437] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Fawzya I. Elshami
- Department of Chemistry, Faculty of Science, KafrelsheikhUniversity Kafrelsheikh 33516 Egypt
| | | | - Mohamed M. Ibrahim
- Department of Chemistry, Faculty of Science, KafrelsheikhUniversity Kafrelsheikh 33516 Egypt
- Department of Chemistry, Faculty of ScienceTaif University Taif Saudi Arabia
| | - Ibrahim M. El‐Mehasseb
- Department of Chemistry, Faculty of Science, KafrelsheikhUniversity Kafrelsheikh 33516 Egypt
| | - Salih Al‐Juaid
- Department of Chemistry, Faculty of ScienceKing Abdulaziz University Jeddah Saudi Arabia
| | - Shaban Y. Shaban
- Department of Chemistry, Faculty of Science, KafrelsheikhUniversity Kafrelsheikh 33516 Egypt
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8
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Hussein MA, Iqbal MA, Umar MI, Haque RA, Guan TS. Synthesis, structural elucidation and cytotoxicity of new thiosemicarbazone derivatives. ARAB J CHEM 2019. [DOI: 10.1016/j.arabjc.2015.08.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
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9
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Kardos J, Héja L, Simon Á, Jablonkai I, Kovács R, Jemnitz K. Copper signalling: causes and consequences. Cell Commun Signal 2018; 16:71. [PMID: 30348177 PMCID: PMC6198518 DOI: 10.1186/s12964-018-0277-3] [Citation(s) in RCA: 101] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Accepted: 09/24/2018] [Indexed: 12/18/2022] Open
Abstract
Copper-containing enzymes perform fundamental functions by activating dioxygen (O2) and therefore allowing chemical energy-transfer for aerobic metabolism. The copper-dependence of O2 transport, metabolism and production of signalling molecules are supported by molecular systems that regulate and preserve tightly-bound static and weakly-bound dynamic cellular copper pools. Disruption of the reducing intracellular environment, characterized by glutathione shortage and ambient Cu(II) abundance drives oxidative stress and interferes with the bidirectional, copper-dependent communication between neurons and astrocytes, eventually leading to various brain disease forms. A deeper understanding of of the regulatory effects of copper on neuro-glia coupling via polyamine metabolism may reveal novel copper signalling functions and new directions for therapeutic intervention in brain disorders associated with aberrant copper metabolism.
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Affiliation(s)
- Julianna Kardos
- Functional Pharmacology Research Group, Institute of Organic Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Magyar Tudósok körútja 2, Budapest, 1117 Hungary
| | - László Héja
- Functional Pharmacology Research Group, Institute of Organic Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Magyar Tudósok körútja 2, Budapest, 1117 Hungary
| | - Ágnes Simon
- Functional Pharmacology Research Group, Institute of Organic Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Magyar Tudósok körútja 2, Budapest, 1117 Hungary
| | - István Jablonkai
- Functional Pharmacology Research Group, Institute of Organic Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Magyar Tudósok körútja 2, Budapest, 1117 Hungary
| | - Richard Kovács
- Institute of Neurophysiology, Charité-Universitätsmedizin, Berlin, Germany
| | - Katalin Jemnitz
- Functional Pharmacology Research Group, Institute of Organic Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Magyar Tudósok körútja 2, Budapest, 1117 Hungary
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10
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Turecka K, Chylewska A, Kawiak A, Waleron KF. Antifungal Activity and Mechanism of Action of the Co(III) Coordination Complexes With Diamine Chelate Ligands Against Reference and Clinical Strains of Candida spp. Front Microbiol 2018; 9:1594. [PMID: 30072969 PMCID: PMC6058090 DOI: 10.3389/fmicb.2018.01594] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Accepted: 06/26/2018] [Indexed: 12/16/2022] Open
Abstract
Although many antifungal agents are available in clinical treatment, increasing resistance of fungi, especially Candida species, to the available drugs requires the development of new safe and non-toxic compounds with novel modes of action as effective treatment against resistant microorganisms. Cobalt complexes are very interesting and attractive as potential candidates with antimicrobial activity. Their therapeutic uses as antiviral, antibacterial antifungal, antiparasitic, antitumour, transferrin transporters, and anti-inflammatory agents are being intensively investigated. In this study we examined the antifungal activity of Co(III) complexes with diamine chelate ligands against a broad spectrum of Candida species. Minimum inhibitory concentration was determined by the microbroth dilution method and with serial passaging assay; the synergistic antimicrobial activity of the tested complexes combined with two antifungal drugs (ketoconazole and amphotericin B) was made by checkerboard assay. The effects of Co(III) complexes on yeast cell morphology were studied by optical and transmission electron microscopy. The mode of action of Co(III) complexes on the yeast cell wall (sorbitol assay) and cell membrane (ergosterol assay) were investigated. The cytotoxic effects of the tested compounds on red blood cells and the human keratinocyte (HaCaT) cell line were also evaluated. The analyzed compounds revealed significant antifungal activity for selected strains of Candida species; [CoCl2(dap)2]Cl (1) and [CoCl2(en)2]Cl (2) were more effective than ketoconazole. Its probable mechanism of action did not involve the cell wall or ergosterol binding. However, the checkerboard assay showed, that the antifungal activity of ketoconazole increased in combination with the tested complexes of Co(III). Our results suggest that both diamine complexes with Co(III) analogs caused damage to mitochondrial membrane or the membrane of the endoplasmic reticulum. The effect was observed by transmission electron microscope. Co(III) complexes with diamine chelate ligands are non-toxic at concentrations active against Candida species. This study provides new data on potential antifungal drugs, especially against Candida species.
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Affiliation(s)
- Katarzyna Turecka
- Department of Pharmaceutical Microbiology, Faculty of Pharmacy, Medical University of Gdańsk, Gdańsk, Poland
| | - Agnieszka Chylewska
- Department of Bioinorganic Chemistry, Faculty of Chemistry, University of Gdańsk, Gdańsk, Poland
| | - Anna Kawiak
- Department of Biotechnology, Intercollegiate Faculty of Biotechnology, University of Gdańsk and Medical University of Gdańsk, Gdańsk, Poland
| | - Krzysztof F Waleron
- Department of Pharmaceutical Microbiology, Faculty of Pharmacy, Medical University of Gdańsk, Gdańsk, Poland
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11
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Ajmal M. Review: electrochemical studies on some metal complexes having anti-cancer activities. J COORD CHEM 2017. [DOI: 10.1080/00958972.2017.1362559] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Muhammad Ajmal
- Faculty of Sciences, Department of Chemistry, Allama Iqbal Open University, Islamabad, Pakistan
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12
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Yadav MK, Maurya AK, Rajput G, Manar KK, Vinayak M, Drew MGB, Singh N. New planar trans-copper(II) β-dithioester chelate complexes: synthesis, characterization, anticancer activity and DNA-binding/cleavage studies. J COORD CHEM 2017. [DOI: 10.1080/00958972.2016.1275589] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Manoj Kumar Yadav
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, India
| | - Akhilendra Kumar Maurya
- Biochemistry & Molecular Biology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, India
| | - Gunjan Rajput
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, India
| | - Krishna Kumar Manar
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, India
| | - Manjula Vinayak
- Biochemistry & Molecular Biology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, India
| | | | - Nanhai Singh
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, India
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Zianna A, Psomas G, Hatzidimitriou A, Lalia-Kantouri M. Ni(II) complexes with 2,2-dipyridylamine and salicylaldehydes: Synthesis, crystal structure and interaction with calf-thymus DNA and albumins. J Inorg Biochem 2016; 163:131-142. [DOI: 10.1016/j.jinorgbio.2016.07.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Revised: 06/21/2016] [Accepted: 07/07/2016] [Indexed: 11/17/2022]
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14
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Mohanraj M, Ayyannan G, Raja G, Jayabalakrishnan C. Synthesis, characterization and in vitro
biological assays of copper(II) and nickel(II) complexes with furan-2-carboxylic acid hydrazide. Appl Organomet Chem 2016. [DOI: 10.1002/aoc.3582] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Maruthachalam Mohanraj
- Post Graduate and Research Department of Chemistry; Sri Ramakrishna Mission Vidyalaya College of Arts and Science; Coimbatore 641 020 Tamil Nadu India
| | - Ganesan Ayyannan
- Post Graduate and Research Department of Chemistry; Sri Ramakrishna Mission Vidyalaya College of Arts and Science; Coimbatore 641 020 Tamil Nadu India
| | - Gunasekaran Raja
- Post Graduate and Research Department of Chemistry; Sri Ramakrishna Mission Vidyalaya College of Arts and Science; Coimbatore 641 020 Tamil Nadu India
| | - Chinnasamy Jayabalakrishnan
- Post Graduate and Research Department of Chemistry; Sri Ramakrishna Mission Vidyalaya College of Arts and Science; Coimbatore 641 020 Tamil Nadu India
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15
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Saswati S, Chakraborty A, Dash SP, Panda AK, Acharyya R, Biswas A, Mukhopadhyay S, Bhutia SK, Crochet A, Patil YP, Nethaji M, Dinda R. Synthesis, X-ray structure and in vitro cytotoxicity studies of Cu(i/ii) complexes of thiosemicarbazone: special emphasis on their interactions with DNA. Dalton Trans 2015; 44:6140-57. [DOI: 10.1039/c4dt03764b] [Citation(s) in RCA: 82] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The interactions of four Cu-TSC complexes with DNA & their cytotoxicity studies against the HeLa cell have been reported.
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16
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Bisceglie F, Pinelli S, Alinovi R, Goldoni M, Mutti A, Camerini A, Piola L, Tarasconi P, Pelosi G. Cinnamaldehyde and cuminaldehyde thiosemicarbazones and their copper(II) and nickel(II) complexes: A study to understand their biological activity. J Inorg Biochem 2014; 140:111-25. [DOI: 10.1016/j.jinorgbio.2014.07.014] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2014] [Revised: 07/15/2014] [Accepted: 07/15/2014] [Indexed: 02/01/2023]
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17
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li P, Niu M, Hong M, Cheng S, Dou J. Effect of structure and composition of nickel(II) complexes with salicylidene Schiff base ligands on their DNA/protein interaction and cytotoxicity. J Inorg Biochem 2014; 137:101-8. [DOI: 10.1016/j.jinorgbio.2014.04.005] [Citation(s) in RCA: 83] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2014] [Revised: 04/02/2014] [Accepted: 04/02/2014] [Indexed: 11/29/2022]
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18
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Wu H, Shi F, Zhang Y, Bai Y, Wang X, Kong J. Synthesis, Characterization, and DNA Binding Studies of a Nickel(II) Complex Containing the 1,3-Bis(1-propylbenzimidazol-2-yl)-2-oxapropane. J CHIN CHEM SOC-TAIP 2014. [DOI: 10.1002/jccs.201300678] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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19
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Wu H, Kong J, Zhang Y, Shi F, Bai Y, Wang X. A Six-Coordinate Picrate Nickel(II) Complex Based on the V-Shaped Ligand 1,3-Bis (1-Benzylbenzimidazol-2-yl)-2-Thiapropane: Synthesis, Crystal Structure, Biological Activities. PHOSPHORUS SULFUR 2014. [DOI: 10.1080/10426507.2013.829836] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Huilu Wu
- a School of Chemical and Biological Engineering , Lanzhou Jiaotong University , Lanzhou , Gansu , 730070 , P. R. China
| | - Jin Kong
- a School of Chemical and Biological Engineering , Lanzhou Jiaotong University , Lanzhou , Gansu , 730070 , P. R. China
| | - Yanhui Zhang
- a School of Chemical and Biological Engineering , Lanzhou Jiaotong University , Lanzhou , Gansu , 730070 , P. R. China
| | - Furong Shi
- a School of Chemical and Biological Engineering , Lanzhou Jiaotong University , Lanzhou , Gansu , 730070 , P. R. China
| | - Yuchen Bai
- a School of Chemical and Biological Engineering , Lanzhou Jiaotong University , Lanzhou , Gansu , 730070 , P. R. China
| | - Xiaoli Wang
- a School of Chemical and Biological Engineering , Lanzhou Jiaotong University , Lanzhou , Gansu , 730070 , P. R. China
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20
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Yasrebi SA, Mobasheri H, Sheikhshoaie I, Rahban M. DNA-binding studies of two dioxomolybdenum(VI) complexes of salicylaldehyde benzoylhydrazone ligands. Inorganica Chim Acta 2013. [DOI: 10.1016/j.ica.2013.02.028] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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21
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Cindrić M, Pavlović G, Hrenar T, Uzelac M, Ćurić M. Donor Abilities of Heterocyclic Neutral Lewis Bases in a Nickel(II) Salicylaldehyde 4‐Phenylthiosemicarbazonato Coordination Environment. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201201050] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Marina Cindrić
- Faculty of Science, University of Zagreb, Horvatovac 102a, Zagreb 10000, Croatia, Fax: +385‐1‐461‐1191, http://www.chem.pmf.hr
| | - Gordana Pavlović
- Faculty of Textile Technology, Department of Applied Chemistry, University of Zagreb, Prilaz baruna Filipovića 28a, Zagreb 10000, Croatia, Fax: +385‐1‐3712‐599, http://www.unizg.ttf.hr
| | - Tomica Hrenar
- Faculty of Science, University of Zagreb, Horvatovac 102a, Zagreb 10000, Croatia, Fax: +385‐1‐461‐1191, http://www.chem.pmf.hr
| | - Marina Uzelac
- Faculty of Science, University of Zagreb, Horvatovac 102a, Zagreb 10000, Croatia, Fax: +385‐1‐461‐1191, http://www.chem.pmf.hr
| | - Manda Ćurić
- Rudjer Bošković Institute, P. O. Box 1016, Zagreb 10000, Croatia, http://www.irb.hr
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22
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Copper(II) thiosemicarbazonate molecular modifications modulate apoptotic and oxidative effects on U937 cell line. J Inorg Biochem 2012; 116:195-203. [DOI: 10.1016/j.jinorgbio.2012.07.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2012] [Revised: 07/02/2012] [Accepted: 07/03/2012] [Indexed: 11/20/2022]
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23
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Vyas A, Patitungkho S, Jamadar A, Adsule S, Padhye S, Ahmad A, Sarkar FH. ATRA-hydrazonate derivatives and their copper complexes against hormone-dependent (MCF-7), hormone-independent (MDA-MB-231and BT-20) breast cancer and androgen-independent (PC3) prostate cancer cell lines. INORG CHEM COMMUN 2012. [DOI: 10.1016/j.inoche.2012.05.027] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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24
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Chen ZF, Shi YF, Liu YC, Hong X, Geng B, Peng Y, Liang H. TCM Active Ingredient Oxoglaucine Metal Complexes: Crystal Structure, Cytotoxicity, and Interaction with DNA. Inorg Chem 2012; 51:1998-2009. [DOI: 10.1021/ic200443p] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Zhen-Feng Chen
- State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry & Chemical Engineering, Guangxi Normal University, Guilin, 541004, China
| | - Yan-Fang Shi
- State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry & Chemical Engineering, Guangxi Normal University, Guilin, 541004, China
| | - Yan-Cheng Liu
- State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry & Chemical Engineering, Guangxi Normal University, Guilin, 541004, China
| | - Xue Hong
- State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry & Chemical Engineering, Guangxi Normal University, Guilin, 541004, China
| | - Bo Geng
- State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry & Chemical Engineering, Guangxi Normal University, Guilin, 541004, China
| | - Yan Peng
- State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry & Chemical Engineering, Guangxi Normal University, Guilin, 541004, China
| | - Hong Liang
- State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry & Chemical Engineering, Guangxi Normal University, Guilin, 541004, China
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25
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Abstract
The importance of transition metals in biological processes has been well established. Copper (Cu) is a transition metal that can exist in oxidised and reduced states. This allows it to participate in redox and catalytic chemistry, making it a suitable cofactor for a diverse range of enzymes and molecules. Cu deficiency or toxicity is implicated in a variety of pathological conditions; therefore inorganic complexes of Cu have been investigated for their therapeutic and diagnostic potential. These Cu complexes have been shown to be effective in cancer treatment due to their cytotoxic action on tumour cells. Alternatively, Cu complexes can also modulate Cu homeostasis in the brain, resulting in protective effects in several models of neurodegeneration. In other diseases such as coronary heart disease and skin disease, the success of Cu complexes as potential therapeutics will most likely be due to their ability to increase SOD activity, leading to relief of oxidative stress. This review seeks to provide a broad insight into some of the diverse actions of Cu complexes and demonstrate the strong future for these compounds as potential therapeutic agents.
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Affiliation(s)
- Clare Duncan
- Centre for Neuroscience & Department of Pathology, The University of Melbourne, Victoria, 3010, Australia
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26
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Tang LJ, Chen X, Sun YN, Ye J, Lu J, Han Y, Jiang X, Cheng CC, He CC, Qiu PH, Li XK. Synthesis and biological studies of 4′, 7, 8-trihydroxy-isoflavone metal complexes. J Inorg Biochem 2011; 105:1623-9. [DOI: 10.1016/j.jinorgbio.2011.08.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2011] [Revised: 08/22/2011] [Accepted: 08/23/2011] [Indexed: 11/17/2022]
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Synthesis, Crystal Structure, and DNA-Binding Studies of a Nickel(II) Complex with the Bis(2-benzimidazolymethyl)amine Ligand. Bioinorg Chem Appl 2011; 2012:609796. [PMID: 21876684 PMCID: PMC3159005 DOI: 10.1155/2012/609796] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2011] [Revised: 06/07/2011] [Accepted: 06/08/2011] [Indexed: 12/02/2022] Open
Abstract
A V-shaped ligand Bis(2-benzimidazolymethyl)amine (bba) and its nickel(II) picrate (pic) complex, with composition [Ni(bba)2](pic)2·3MeOH, have been synthesized and characterized on the basis of elemental analyses, molar conductivities, IR spectra, and UV/vis measurements. In the complex, the Ni(II) ion is six-coordinated with a N2O4 ligand set, resulting in a distorted octahedron coordination geometry. In addition, the DNA-binding properties of the Ni(II) complex have been investigated by electronic absorption, fluorescence, and viscosity measurements. The experimental results suggest that the nickel(II) complex binds to DNA by partial intercalation binding mode.
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28
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Sathyadevi P, Krishnamoorthy P, Butorac RR, Cowley AH, Bhuvanesh NSP, Dharmaraj N. Effect of substitution and planarity of the ligand on DNA/BSA interaction, free radical scavenging and cytotoxicity of diamagnetic Ni(ii) complexes: A systematic investigation. Dalton Trans 2011; 40:9690-702. [DOI: 10.1039/c1dt10767d] [Citation(s) in RCA: 134] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Tisato F, Marzano C, Porchia M, Pellei M, Santini C. Copper in diseases and treatments, and copper-based anticancer strategies. Med Res Rev 2010; 30:708-49. [PMID: 19626597 DOI: 10.1002/med.20174] [Citation(s) in RCA: 162] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Copper is found in all living organisms and is a crucial trace element in redox chemistry, growth and development. It is important for the function of several enzymes and proteins involved in energy metabolism, respiration, and DNA synthesis, notably cytochrome oxidase, superoxide dismutase, ascorbate oxidase, and tyrosinase. The major functions of copper-biological molecules involve oxidation-reduction reactions in which they react directly with molecular oxygen to produce free radicals. Therefore, copper requires tightly regulated homeostatic mechanisms to ensure adequate supplies without any toxic effects. Overload or deficiency of copper is associated, respectively, with Wilson disease (WD) and Menkes disease (MD), which are of genetic origin. Researches on Menkes and Wilson disorders have provided useful insights in the field of copper homeostasis and in particular into the understanding of intracellular trafficking and distribution of copper at molecular levels. Therapies based on metal supplementation with copper histidine or removal of copper excess by means of specific copper chelators are currently effective in treating MD and WD, respectively. Copper chelation therapy is now attracting much attention for the investigation and treatment of various neurodegenerative disorders such as Alzheimer, Parkinson and CreutzfeldtJakob. An excess of copper appears to be an essential co-factor for angiogenesis. Moreover, elevated levels of copper have been found in many types of human cancers, including prostate, breast, colon, lung, and brain. On these basis, the employment of copper chelators has been reported to be of therapeutic value in the treatment of several types of cancers as anti-angiogenic molecules. More recently, mixtures of copper chelators with copper salts have been found to act as efficient proteasome inhibitors and apoptosis inducers, specifically in cancer cells. Moreover, following the worldwide success of platinum(II) compounds in cancer chemotherapy, several families of individual copper complexes have been studied as potential antitumor agents. These investigations, revealing the occurrence of mechanisms of action quite different from platinum drugs, head toward the development of new anticancer metallodrugs with improved specificity and decreased toxic side effects.
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30
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Richardson DR, Kalinowski DS, Richardson V, Sharpe PC, Lovejoy DB, Islam M, Bernhardt PV. 2-Acetylpyridine thiosemicarbazones are potent iron chelators and antiproliferative agents: redox activity, iron complexation and characterization of their antitumor activity. J Med Chem 2010; 52:1459-70. [PMID: 19216562 DOI: 10.1021/jm801585u] [Citation(s) in RCA: 168] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Through systematic structure-activity studies of the 2-benzoylpyridine thiosemicarbazone (HBpT), 2-(3-nitrobenzoyl)pyridine thiosemicarbazone (HNBpT) and dipyridylketone thiosemicarbazone (HDpT) series of iron (Fe) chelators, we identified structural features necessary to form Fe complexes with potent anticancer activity (J. Med. Chem. 2007, 50, 3716-3729). In this investigation, we generated the related 2-acetylpyridine thiosemicarbazone (HApT) analogues to examine the influence of the methyl group at the imine carbon. Four of the six HApT chelators had potent antitumor activity (IC(50): 0.001-0.002 microM) and Fe chelation efficacy that was similar to the most effective HBpT and HDpT ligands. The HApT Fe complexes had the lowest Fe(III/II) redox potentials of any thiosemicarbazone series we have generated. This property, in combination with their ability to effectively chelate cellular Fe, make the HApT series one of the most potent antiproliferative agents developed by our group.
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Affiliation(s)
- Des R Richardson
- Department of Pathology, University of Sydney, Sydney, New South Wales, Australia.
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31
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Puchta R, Shaban SY, Mansour H, Alzoubi BM. Structural study of 2-pyridine-derived N(4)-p-tolyl thiosemicarbazone zinc(II) complexes–DFT analysis. J COORD CHEM 2010. [DOI: 10.1080/00958972.2010.492428] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Ralph Puchta
- a Inorganic Chemistry, Department of Chemistry and Pharmacy , University of Erlangen-Nürnberg , Egerlandstr. 1, 91058 Erlangen, Germany
- b Computer Chemistry Center, Department of Chemistry and Pharmacy , University of Erlangen-Nürnberg , Nägelsbachstr. 25, 91052 Erlangen, Germany
| | - Shaban Y. Shaban
- a Inorganic Chemistry, Department of Chemistry and Pharmacy , University of Erlangen-Nürnberg , Egerlandstr. 1, 91058 Erlangen, Germany
- c Department of Chemistry, Faculty of Science , Kafrelsheikh University , Kafrelsheikh 33516, Egypt
| | - Hanaa Mansour
- a Inorganic Chemistry, Department of Chemistry and Pharmacy , University of Erlangen-Nürnberg , Egerlandstr. 1, 91058 Erlangen, Germany
- c Department of Chemistry, Faculty of Science , Kafrelsheikh University , Kafrelsheikh 33516, Egypt
| | - Basam M. Alzoubi
- a Inorganic Chemistry, Department of Chemistry and Pharmacy , University of Erlangen-Nürnberg , Egerlandstr. 1, 91058 Erlangen, Germany
- d Department of Basic Science , Zarka University College, Al-Balqa Applied University , Zarka, Jordan
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32
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Skyrianou KC, Perdih F, Turel I, Kessissoglou DP, Psomas G. Nickel–quinolones interaction. Part 2 – Interaction of nickel(II) with the antibacterial drug oxolinic acid. J Inorg Biochem 2010; 104:161-70. [DOI: 10.1016/j.jinorgbio.2009.10.017] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2009] [Revised: 10/09/2009] [Accepted: 10/19/2009] [Indexed: 11/27/2022]
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33
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Jia L, Xu J, Xu XM, Chen LH, Jiang P, Cheng FX, Lu GN, Wang Q, Wu JC, Tang N. Synthesis, Crystal Structure, Antioxidant Activity, and DNA-Binding Studies of a Novel Ni(II) [2*2] Grid Complex with a Rigid Bistridentate Schiff Base Ligand. Chem Pharm Bull (Tokyo) 2010; 58:1077-80. [DOI: 10.1248/cpb.58.1077] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Lei Jia
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University
- Department of Physics and Chemistry, Henan Polytechnic University
| | - Jun Xu
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University
| | - Xi-Ming Xu
- School of Life Science, Lanzhou University
| | - Long-Hai Chen
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University
| | - Peng Jiang
- School of Life Science, Lanzhou University
| | - Fei-Xiang Cheng
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University
| | - Guang-Nong Lu
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University
| | - Qin Wang
- School of Life Science, Lanzhou University
| | - Jin-Cai Wu
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University
| | - Ning Tang
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University
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34
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Pyrophosphate-bridged complexes with picomolar toxicity. J Inorg Biochem 2009; 103:1254-64. [PMID: 19666193 DOI: 10.1016/j.jinorgbio.2009.07.010] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2009] [Revised: 06/30/2009] [Accepted: 07/06/2009] [Indexed: 11/22/2022]
Abstract
Recently, we have observed the emergence of a new series of pyrophosphate-bridged coordination complexes. Such complexes have been prepared by overcoming the ready hydrolysis of the pyrophosphate moiety. To date, no exploration has been conducted on the cytotoxicity of such complexes. Three pyrophosphate-bridged complexes, namely {[Ni(phen)(2)](2)(mu-P(2)O(7))}.27H(2)O, {[Cu(phen)(H(2)O)](2)(mu-P(2)O(7))}.8H(2)O and {[Co(phen)(2)](2)(mu-P(2)O(7))}.6MeOH, (where phen is 1,10'-phenanthroline) were chosen for their comparative structural similarities and suitable aqueous solubility. Cytotoxicity studies in the adriamycin-resistant ovarian cancer cell line A2780/AD demonstrated highly significant efficacy, with values as low as 160pM for the cobalt complex at 72h. The underlying mechanism for such exceptional toxicity is investigated focusing on DNA interactions, topoisomerase I enzyme inhibition and oxidative stress (followed by intracellular glutathione levels). The role of hydrolysis in uptake and toxicity is also explored (followed by electronic absorption spectroscopy, (31)P NMR, and confocal microscopy) and the complexes are compared to cisplatin controls. Overall a clear picture of the extraordinary toxicity emerged. The results demonstrate a new class of prodrugs with significant potential for future development for the treatment of drug-resistant cancer cell lines.
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35
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Barone G, Gambino N, Ruggirello A, Silvestri A, Terenzi A, Liveri VT. Spectroscopic study of the interaction of Ni(II)-5-triethyl ammonium methyl salicylidene ortho-phenylendiiminate with native DNA. J Inorg Biochem 2009; 103:731-7. [PMID: 19230979 DOI: 10.1016/j.jinorgbio.2009.01.006] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2008] [Revised: 12/22/2008] [Accepted: 01/14/2009] [Indexed: 10/21/2022]
Abstract
The interaction of native calf thymus DNA with the cationic Ni(II) complex of 5-triethyl ammonium methyl salicylidene ortho-phenylendiimine (NiL(2+)), in 1mM Tris-HCl aqueous solutions at neutral pH, has been monitored as a function of the metal complex-DNA molar ratio by UV absorption spectrophotometry, circular dichroism (CD) and fluorescence spectroscopy. The dramatic modification of the DNA CD spectrum, the appearance of a broad induced CD band in the range 350-400nm, the strong increase of the DNA melting temperature (T(m)) and the fluorescence quenching of ethidium bromide-DNA solutions, in the presence of increasing amounts of the NiL(2+) metal complex, support the existence of a tight intercalative interaction of NiL(2+) with DNA, analogous to that recently reported for both ZnL(2+) and CuL(2+). The intrinsic binding constant (K(b)) and the interaction stoichiometry (s), determined by UV spectrophotometric titration, are equal to 4.3x10(6)M(-1) and 1.0 base pair per metal complex, respectively. Interestingly, the value of K(b) is slightly higher and 10 times higher than that relative to the CuL(2+)-DNA and the ZnL(2+)-DNA systems, respectively. Speculations can be performed to rationalize the observed trend, on the basis of the electronic and geometrical structures of the three complexes of the same ligand. Analogously to what previously observed for CuL(2+), the shape of the CD of the NiL(2+)-DNA system at NiL(2+)-DNA molar ratios higher than 0.5 is indicative of the formation of supramolecular aggregates in solutions, as a possible consequence of the electrostatic interaction between the cationic complex and the negatively charged phosphate groups of DNA.
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Affiliation(s)
- Giampaolo Barone
- Dipartimento di Chimica Inorganica e Analitica "S. Cannizzaro", Università di Palermo, Italy
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36
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Buschini A, Pinelli S, Pellacani C, Giordani F, Ferrari MB, Bisceglie F, Giannetto M, Pelosi G, Tarasconi P. Synthesis, characterization and deepening in the comprehension of the biological action mechanisms of a new nickel complex with antiproliferative activity. J Inorg Biochem 2009; 103:666-77. [PMID: 19193444 DOI: 10.1016/j.jinorgbio.2008.12.016] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2008] [Revised: 12/22/2008] [Accepted: 12/30/2008] [Indexed: 10/21/2022]
Abstract
Thiosemicarbazones are versatile organic compounds that present considerable pharmaceutical interest because of a wide range of properties. In our laboratory we synthesised some new metal-complexes with thiosemicarbazones derived from natural aldehydes which showed peculiar biological activities. In particular, a nickel complex [Ni(S-tcitr)(2)] (S-tcitr=S-citronellalthiosemicarbazonate) was observed to induce an antiproliferative effect on U937, a human histiocytic lymphoma cell line, at low concentrations (IC(50)=14.4microM). Therefore, we decided to study the interactions of this molecule with various cellular components and to characterise the induced apoptotic pathway. Results showed that [Ni(S-tcitr)(2)] causes programmed cell death via down-regulation of Bcl-2, alteration of mitochondrial membrane potential and caspase-3 activity, regardless of p53 function. The metal complex is not active on G(0) cells (i.e. fresh leukocytes) but is able to induce perturbation of the cell cycle on stimulated lymphocytes and U937 cells, in which a G(2)/M block was detected. It reaches the nucleus where it induces, at low concentrations (2.5-5.0microM), DNA damage, which could be partially ascribed to oxidative stress. [Ni(S-tcitr)(2)] is moreover able to strongly reduce the telomerase activity. Although the biological target of this metal complex is still unknown, the reported data suggest that [Ni(S-tcitr)(2)] could be a good model for the synthesis of new metal thiosemicarbazones with specific biological activity.
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Affiliation(s)
- Annamaria Buschini
- Dipartimento di Genetica, Biologia dei Microrganismi, Antropologia, Evoluzione, Università di Parma, Italy.
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Heterocyclic substituted thiosemicarbazones and their Cu(II) complexes: Synthesis, characterization and studies of substituent effects on coordination and DNA binding. Polyhedron 2008. [DOI: 10.1016/j.poly.2007.12.034] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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