101
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Zhang Z, Wang H, Wang Q, Yan M, Wang H, Bi C, Sun S, Fan Y. Anticancer activity and computational modeling of ternary copper (II) complexes with 3-indolecarboxylic acid and 1,10-phenanthroline. Int J Oncol 2016; 49:691-9. [DOI: 10.3892/ijo.2016.3542] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Accepted: 05/16/2016] [Indexed: 11/06/2022] Open
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102
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Wehbe M, Chernov L, Chen K, Bally MB. PRCosomes: pretty reactive complexes formed in liposomes. J Drug Target 2016; 24:787-796. [DOI: 10.1080/1061186x.2016.1186169] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Mohamed Wehbe
- Experimental Therapeutics, British Columbia Cancer Agency, Vancouver, BC, Canada
- Faculty of Pharmaceutical Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Lina Chernov
- Experimental Therapeutics, British Columbia Cancer Agency, Vancouver, BC, Canada
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Kent Chen
- Experimental Therapeutics, British Columbia Cancer Agency, Vancouver, BC, Canada
- Department of Interdisciplinary Oncology, BC Cancer Research Centre, Vancouver, BC, Canada
| | - Marcel B. Bally
- Experimental Therapeutics, British Columbia Cancer Agency, Vancouver, BC, Canada
- Faculty of Pharmaceutical Sciences, University of British Columbia, Vancouver, BC, Canada
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC, Canada
- Department of Interdisciplinary Oncology, BC Cancer Research Centre, Vancouver, BC, Canada
- Center for Drug Research and Development, Vancouver, BC, Canada
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103
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Ostrakhovitch EA, Song YP, Cherian MG. Basal and copper-induced expression of metallothionein isoform 1,2 and 3 genes in epithelial cancer cells: The role of tumor suppressor p53. J Trace Elem Med Biol 2016; 35:18-29. [PMID: 27049123 DOI: 10.1016/j.jtemb.2016.01.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Revised: 01/14/2016] [Accepted: 01/14/2016] [Indexed: 12/13/2022]
Abstract
Metallothioneins (MTs) are a ubiquitous low-molecular weight, cysteine rich proteins with a high affinity for metal ions. The expression and induction of MTs have been associated with protection against DNA damage, oxidative stress, and apoptosis. Our past research had shown that p53 is an important factor in metal regulation of MTs. The present study was undertaken to explore further the interrelationship between p53 and MTs. We investigated whether silencing of p53 could affect expression pattern of basal and copper induced metallothioneins. The silencing of wild-type p53 (wt-p53) in epithelial breast cancer MCF7 cells affected the basal level of MT-2A RNA, whereas the levels of MT-1A and MT-1X RNA remained largely unchanged. The expression of MT-3 was undetectable in MCF7 with either functional or silenced p53. MCF7 cells with silenced wt-p53 failed to upregulate MT-2A in response to copper and showed a reduced sensitivity toward copper induced cell apoptotic death. Similarly in MCF7-E6 and MDA-MB-231 cells, the presence of inactive/mutated p53 halted MT-1A and MT-2A gene expression in response to copper. Constitutive expression of MT-3 RNA was detectable in the presence of mutated p53 (mtp53). Transient transfection of MDA-MB-231 cells with wt-p53 enabled copper induced upregulation of both MT-1A and MT-2A but not basal level of MT-2A, MT-1E, MT-1X and MT-3. Inactivation of p53 in HepG2 cells amplified the basal expression of studied MT isoforms, including MT-3, as well as copper-induced mRNA expression of MTs except MT-1H and MT-3. Presented data demonstrate a direct relation between p53 and MT-1A and MT-2A and they also indicate that wt-p53 might be a negative regulator of MT-3 in epithelial cancer cells.
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Affiliation(s)
- E A Ostrakhovitch
- Department of Pathology, University of Western Ontario, Canada; Department of Chemistry, University of Western Ontario, Canada.
| | - Y P Song
- Department of Pathology, University of Western Ontario, Canada; Department of Chemistry, University of Western Ontario, Canada
| | - M G Cherian
- Department of Pathology, University of Western Ontario, Canada; Department of Chemistry, University of Western Ontario, Canada
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104
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Montani M, Pazmay GVB, Hysi A, Lupidi G, Pettinari R, Gambini V, Tilio M, Marchetti F, Pettinari C, Ferraro S, Iezzi M, Marchini C, Amici A. The water soluble ruthenium(II) organometallic compound [Ru(p-cymene)(bis(3,5 dimethylpyrazol-1-yl)methane)Cl]Cl suppresses triple negative breast cancer growth by inhibiting tumor infiltration of regulatory T cells. Pharmacol Res 2016; 107:282-290. [PMID: 27038531 DOI: 10.1016/j.phrs.2016.03.032] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Revised: 02/11/2016] [Accepted: 03/01/2016] [Indexed: 12/21/2022]
Abstract
Ruthenium compounds have become promising alternatives to platinum drugs by displaying specific activities against different cancers and favorable toxicity and clearance properties. Here, we show that the ruthenium(II) complex [Ru(p-cymene)(bis(3,5-dimethylpyrazol-1-yl)methane)Cl]Cl (UNICAM-1) exhibits potent in vivo antitumor effects. When administered as four-dose course, by repeating a single dose (52.4mgkg-1) every three days, UNICAM-1 significantly reduces the growth of A17 triple negative breast cancer cells transplanted into FVB syngeneic mice. Pharmacokinetic studies indicate that UNICAM-1 is rapidly eliminated from kidney, liver and bloodstream thanks to its high hydrosolubility, exerting excellent therapeutic activity with minimal side effects. Immunohistological analysis revealed that the efficacy of UNICAM-1, mainly relies on its capacity to reverse tumor-associated immune suppression by significantly reducing the number of tumor-infiltrating regulatory T cells. Therefore, UNICAM-1 appears very promising for the treatment of TNBC.
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Affiliation(s)
- Maura Montani
- School of Bioscience and Veterinary Medicine, University of Camerino, Camerino, MC, 62032, Italy
| | - Gretta V Badillo Pazmay
- School of Bioscience and Veterinary Medicine, University of Camerino, Camerino, MC, 62032, Italy; School of Pharmacy, University of Camerino, Camerino, MC, 62032, Italy
| | - Albana Hysi
- Aging Research Centre, G. dAnnunzio University, Chieti, 66100, Italy
| | - Giulio Lupidi
- School of Pharmacy, University of Camerino, Camerino, MC, 62032, Italy.
| | | | - Valentina Gambini
- School of Bioscience and Veterinary Medicine, University of Camerino, Camerino, MC, 62032, Italy
| | - Martina Tilio
- School of Bioscience and Veterinary Medicine, University of Camerino, Camerino, MC, 62032, Italy
| | - Fabio Marchetti
- School of Science and Technology, University of Camerino, Camerino, MC, 62032, Italy
| | - Claudio Pettinari
- School of Pharmacy, University of Camerino, Camerino, MC, 62032, Italy
| | - Stefano Ferraro
- School of Science and Technology, University of Camerino, Camerino, MC, 62032, Italy
| | - Manuela Iezzi
- Aging Research Centre, G. dAnnunzio University, Chieti, 66100, Italy
| | - Cristina Marchini
- School of Bioscience and Veterinary Medicine, University of Camerino, Camerino, MC, 62032, Italy
| | - Augusto Amici
- School of Bioscience and Veterinary Medicine, University of Camerino, Camerino, MC, 62032, Italy.
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105
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Hoda M, Pajaniradje S, Shakya G, Mohankumar K, Rajagopalan R. Anti-proliferative and apoptosis-triggering potential of disulfiram and disulfiram-loaded polysorbate 80-stabilized PLGA nanoparticles on hepatocellular carcinoma Hep3B cell line. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2016; 12:1641-50. [PMID: 27013133 DOI: 10.1016/j.nano.2016.02.013] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Revised: 01/15/2016] [Accepted: 02/08/2016] [Indexed: 01/30/2023]
Abstract
There is an emerging trend to restudy known drugs for their anti-cancer potential. One such anti-alcoholic drug, disulfiram, with significant anti-cancer potential was studied for its efficacy against Hep3B cell lines, an in vitro model of hepatocellular carcinoma. Simultaneously, we intended to study the effect of polysorbate 80-stabilized PLGA nanoparticles and its DSF-loaded counterpart. Cell and nuclear staining, comet assay, flow cytometry and Western blots were performed. Results suggest that cell proliferation was inhibited by DSF and its PLGA nanoparticles through cell cycle arrest, triggering activation of apoptotic pathways that culminates with cell death. DSF loaded nanoparticles when compared with free DSF, showed significantly lesser effect due to its sustained drug-releasing property, while empty nanoparticles showed negligible influence on Hep3B cells. Our results suggest that DSF alone contributes to cell death, while polysorbate 80-stabilized PLGA nanoparticles show sustained drug release patterns that would potentially lower dosage regimens.
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Affiliation(s)
- Muddasarul Hoda
- Department of Biochemistry and Molecular Biology, School of Life Sciences, Pondicherry University, Puducherry, India
| | - Sankar Pajaniradje
- Department of Biochemistry and Molecular Biology, School of Life Sciences, Pondicherry University, Puducherry, India
| | - Garima Shakya
- Department of Biochemistry and Molecular Biology, School of Life Sciences, Pondicherry University, Puducherry, India
| | - Kumaravel Mohankumar
- Department of Biochemistry and Molecular Biology, School of Life Sciences, Pondicherry University, Puducherry, India
| | - Rukkumani Rajagopalan
- Department of Biochemistry and Molecular Biology, School of Life Sciences, Pondicherry University, Puducherry, India; Interdisciplinary Programme for Life Sciences, Pondicherry University, Puducherry, India; Department of Biotechnology, University of Madras, Guindy Campus, Chennai, Tamilnadu, India.
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106
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Barresi V, Spampinato G, Musso N, Trovato Salinaro A, Rizzarelli E, Condorelli DF. ATOX1 gene silencing increases susceptibility to anticancer therapy based on copper ionophores or chelating drugs. J Inorg Biochem 2016; 156:145-52. [PMID: 26784148 DOI: 10.1016/j.jinorgbio.2016.01.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Revised: 12/28/2015] [Accepted: 01/07/2016] [Indexed: 11/17/2022]
Abstract
Copper is a catalytic cofactor required for the normal function of many enzymes involved in fundamental biological processes but highly cytotoxic when in excess. Therefore its homeostasis and distribution is strictly regulated by a network of transporters and intracellular chaperones. ATOX1 (antioxidant protein 1) is a copper chaperone that plays a role in copper homeostasis by binding and transporting cytosolic copper to ATPase proteins in the trans-Golgi network. In the present study the Caco-2 cell line, a colon carcinoma cell line, was used as an in vitro model to evaluate if ATOX1 deficiency could affect sensitivity to experimentally induced copper dyshomeostasis. Silencing of ATOX1 increased toxicity of a short treatment with a high concentration of Cu(2+). Copper ionophores, such as 5-chloro-8-hydroxyquinoline, induced a copper-dependent cell toxicity which was significantly potentiated after ATOX1 silencing. The copper chelator TPEN (N,N,N',N'-tetrakis (2-pyridylmethyl) ethylenediamine) produced a form of cell toxicity that was reversed by the addition of Cu(2+). ATOX1 silencing increased Caco-2 cell sensitivity to TPEN toxicity. Our results suggest the possibility of a therapy with copper-chelating or ionophore drugs in subtypes of tumors showing specific alterations in ATOX1 expression.
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Affiliation(s)
- Vincenza Barresi
- Department of Biomedical and Biotechnological Sciences, Unit of Medical Biochemistry, University of Catania, Italy
| | - Giorgia Spampinato
- Department of Biomedical and Biotechnological Sciences, Unit of Medical Biochemistry, University of Catania, Italy
| | - Nicolò Musso
- Department of Biomedical and Biotechnological Sciences, Unit of Medical Biochemistry, University of Catania, Italy
| | - Angela Trovato Salinaro
- Department of Biomedical and Biotechnological Sciences, Unit of Medical Biochemistry, University of Catania, Italy
| | - Enrico Rizzarelli
- Institute of Biostructures and Bioimaging, National Council of Research, UOS Catania, Italy
| | - Daniele Filippo Condorelli
- Department of Biomedical and Biotechnological Sciences, Unit of Medical Biochemistry, University of Catania, Italy.
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107
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Urinary metallomics as a novel biomarker discovery platform: Breast cancer as a case study. Clin Chim Acta 2016; 452:142-8. [DOI: 10.1016/j.cca.2015.11.014] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Revised: 11/11/2015] [Accepted: 11/12/2015] [Indexed: 11/18/2022]
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108
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Zhang L, Tian B, Li Y, Lei T, Meng J, Yang L, Zhang Y, Chen F, Zhang H, Xu H, Zhang Y, Tang X. A Copper-Mediated Disulfiram-Loaded pH-Triggered PEG-Shedding TAT Peptide-Modified Lipid Nanocapsules for Use in Tumor Therapy. ACS APPLIED MATERIALS & INTERFACES 2015; 7:25147-25161. [PMID: 26501354 DOI: 10.1021/acsami.5b06488] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Disulfiram, which exhibits marked tumor inhibition mediated by copper, was encapsulated in lipid nanocapsules modified with TAT peptide (TATp) and pH-triggered sheddable PEG to target cancer cells on the basis of tumor environmental specificity. PEG-shedding lipid nanocapsules (S-LNCs) were fabricated from LNCs by decorating short PEG chains with TATp (HS-PEG(1k)-TATp) to form TATp-LNCs and then covered by pH-sensitive graft copolymers of long PEG chains (PGA-g-PEG(2k)). The DSF-S-LNCs had sizes in the range of 60-90 nm and were stable in the presence of 50% plasma. DSF-S-LNCs exhibited higher intracellular uptake and antitumor activity at pH 6.5 than at pH 7.4. The preincubation of Cu showed that the DSF cytotoxicity was based on the accumulation of Cu in Hep G2 cells. Pharmacokinetic studies showed the markedly improved pharmacokinetic profiles of DSF-S-LNCs (AUC= 3921.391 μg/L·h, t(1/2z) = 1.294 h) compared with free DSF (AUC = 907.724 μg/L·h, t(1/2z) = 0.252 h). The in vivo distribution of S-LNCs was investigated using Cy5.5 as a fluorescent probe. In tumor-bearing mice, the delivery efficiency of S-LNCs was found to be 496.5% higher than that of free Cy5.5 and 74.5% higher than that of LNCs in tumors. In conclusion, DSF-S-LNCs increased both the stability and tumor internalization and further increased the cytotoxicity because of the higher copper content.
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Affiliation(s)
- Ling Zhang
- Department of Pharmaceutics, College of Pharmacy, Shenyang Pharmaceutical University , Shenyang, Liaoning, PR China
| | - Bin Tian
- Department of Pharmaceutics, College of Pharmacy, Shenyang Pharmaceutical University , Shenyang, Liaoning, PR China
| | - Yi Li
- Department of Pharmacology, Shenyang Pharmaceutical University , Shenyang, Liaoning, PR China
| | - Tian Lei
- Department of Pharmaceutics, College of Pharmacy, Shenyang Pharmaceutical University , Shenyang, Liaoning, PR China
| | - Jia Meng
- Department of Pharmaceutics, College of Pharmacy, Shenyang Pharmaceutical University , Shenyang, Liaoning, PR China
| | - Liu Yang
- Department of Pharmaceutics, College of Pharmacy, Shenyang Pharmaceutical University , Shenyang, Liaoning, PR China
| | - Yan Zhang
- Normal College, Shenyang University , Shenyang, Liaoning, PR China
| | - Fen Chen
- Department of Pharmaceutics, College of Pharmacy, Shenyang Pharmaceutical University , Shenyang, Liaoning, PR China
- Key Laboratory of Ministry of Education for TCM Viscera-State Theory and Applications, Liaoning University of Traditional Chinese Medicine , Shenyang, Liaoning, PR China
| | - Haotian Zhang
- Department of Pharmacology, Shenyang Pharmaceutical University , Shenyang, Liaoning, PR China
| | - Hui Xu
- Department of Pharmaceutics, College of Pharmacy, Shenyang Pharmaceutical University , Shenyang, Liaoning, PR China
| | - Yu Zhang
- Department of Pharmaceutics, College of Pharmacy, Shenyang Pharmaceutical University , Shenyang, Liaoning, PR China
| | - Xing Tang
- Department of Pharmaceutics, College of Pharmacy, Shenyang Pharmaceutical University , Shenyang, Liaoning, PR China
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109
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Martín-Santos C, Michelucci E, Marzo T, Messori L, Szumlas P, Bednarski PJ, Mas-Ballesté R, Navarro-Ranninger C, Cabrera S, Alemán J. Gold(III) complexes with hydroxyquinoline, aminoquinoline and quinoline ligands: Synthesis, cytotoxicity, DNA and protein binding studies. J Inorg Biochem 2015; 153:339-345. [PMID: 26490713 DOI: 10.1016/j.jinorgbio.2015.09.012] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Revised: 09/10/2015] [Accepted: 09/30/2015] [Indexed: 12/29/2022]
Abstract
In this article, we report on the synthesis and the chemical and biological characterization of novel gold(III) complexes based on hydroxyl- or amino-quinoline ligands that are evaluated as prospective anticancer agents. To gain further insight into their reactivity and possible mode of action, their interactions with model proteins and standard nucleic acid molecules were investigated.
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Affiliation(s)
- Cecilia Martín-Santos
- Departamento de Química Inorgánica (Módulo 7), Facultad de Ciencias, Universidad Autónoma de Madrid, Calle Francisco Tomás y Valiente 7, 28049 Madrid, Spain
| | - Elena Michelucci
- Mass Spectrometry Center (CISM), University of Florence, via U. Schiff 6, 50019 Sesto Fiorentino, Florence, Italy
| | - Tiziano Marzo
- Laboratory of Metals in Medicine (MET MED), Department of Chemistry 'Ugo Schiff', University of Florence, via della Lastruccia 3, 50019 Sesto Fiorentino, Florence, Italy
| | - Luigi Messori
- Laboratory of Metals in Medicine (MET MED), Department of Chemistry 'Ugo Schiff', University of Florence, via della Lastruccia 3, 50019 Sesto Fiorentino, Florence, Italy
| | - Piotr Szumlas
- Pharmazeutische/Medizinische Chemie, Institut für Pharmazie, Ernst-Moritz-Arndt Universität Greifswald, 17487 Greifswald, Germany
| | - Patrick J Bednarski
- Pharmazeutische/Medizinische Chemie, Institut für Pharmazie, Ernst-Moritz-Arndt Universität Greifswald, 17487 Greifswald, Germany
| | - Rubén Mas-Ballesté
- Departamento de Química Inorgánica (Módulo 7), Facultad de Ciencias, Universidad Autónoma de Madrid, Calle Francisco Tomás y Valiente 7, 28049 Madrid, Spain
| | - Carmen Navarro-Ranninger
- Departamento de Química Inorgánica (Módulo 7), Facultad de Ciencias, Universidad Autónoma de Madrid, Calle Francisco Tomás y Valiente 7, 28049 Madrid, Spain
| | - Silvia Cabrera
- Departamento de Química Inorgánica (Módulo 7), Facultad de Ciencias, Universidad Autónoma de Madrid, Calle Francisco Tomás y Valiente 7, 28049 Madrid, Spain.
| | - José Alemán
- Departamento de Química Orgánica (Módulo 1), Facultad de Ciencias, Universidad Autónoma de Madrid, Calle Francisco Tomás y Valiente 7, 28049 Madrid, Spain.
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110
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Lu H, Zhang H, Chen J, Zhang J, Liu R, Sun H, Zhao Y, Chai Z, Hu Y. A thiol fluorescent probe reveals the intricate modulation of cysteine's reactivity by Cu(II). Talanta 2015; 146:477-82. [PMID: 26695293 DOI: 10.1016/j.talanta.2015.09.014] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Revised: 09/04/2015] [Accepted: 09/06/2015] [Indexed: 12/01/2022]
Abstract
In this study, Cu(II)-mediated differential alteration of cysteine (Cys) reactivity is reported by using a Cys-specific fluorescent probe. The probe could react with Cys to give out strong fluorescence. When Cys was preincubated with Cu(II), the fluorescence of the probe was decreased due to the inhibition of Cys's reactivity by Cu(II). Remarkably, experimental results reveal that the probe could detect Cu(II) at subnanomolar concentrations. In contrast, Cu(II) could only partially inhibit the reaction between Cys and Ellman's reagent (DTNB). Furthermore, selectivity experiments show that Cu(II) is a much more potent inhibitor for Cys compared to other metal ions. Cell imaging experiments also confirm the inhibitory effects of Cu(II) on Cys's reactivity in living cells. We envision that the probe could add a useful tool for sensitive and selective detection of Cu(II) for biomedical research.
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Affiliation(s)
- Huiru Lu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Multi-disciplinary Research Division, Institute of High Energy Physics, Chinese Academy of Sciences (CAS), Beijing 100049, China; Key Laboratory of Chemical Biology of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding, Hebei 071002, China
| | - Huatang Zhang
- Department of Biology and Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Jun Chen
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Multi-disciplinary Research Division, Institute of High Energy Physics, Chinese Academy of Sciences (CAS), Beijing 100049, China
| | - Jinchao Zhang
- Key Laboratory of Chemical Biology of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding, Hebei 071002, China.
| | - Ruochuan Liu
- Department of Biology and Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Hongyan Sun
- Department of Biology and Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, China.
| | - Yuliang Zhao
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Multi-disciplinary Research Division, Institute of High Energy Physics, Chinese Academy of Sciences (CAS), Beijing 100049, China
| | - Zhifang Chai
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Multi-disciplinary Research Division, Institute of High Energy Physics, Chinese Academy of Sciences (CAS), Beijing 100049, China
| | - Yi Hu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Multi-disciplinary Research Division, Institute of High Energy Physics, Chinese Academy of Sciences (CAS), Beijing 100049, China.
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111
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An efficient synthesis and in vitro antibacterial evaluation of ruthenium–quinolinol complexes. Bioorg Med Chem Lett 2015; 25:2892-6. [DOI: 10.1016/j.bmcl.2015.05.063] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Revised: 05/10/2015] [Accepted: 05/22/2015] [Indexed: 12/21/2022]
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112
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Zhang Z, Bi C, Fan Y, Wang H, Bao Y. Cefepime, a fourth-generation cephalosporin, in complex with manganese, inhibits proteasome activity and induces the apoptosis of human breast cancer cells. Int J Mol Med 2015; 36:1143-50. [PMID: 26239216 DOI: 10.3892/ijmm.2015.2297] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2015] [Accepted: 07/20/2015] [Indexed: 11/06/2022] Open
Abstract
Cefepime (FEP), which is a member of the fourth-generation cephalosporin class, has been extensively studied as a biochemical and antimicrobial reagent in recent years. Manganese (Mn) is important in the biochemical and physiological processes of many living organisms, and it is also high expressed in some tumor tissues. In the present study, we aimed to investigate the proteasome-inhibitory and anti-proliferative properties of 8 metal complexes (FEP‑Cu, FEP-Zn, FEP-Co, FEP-Ni, FEP-Cd, FEP-Cr, FEP-Fe, FEP-Mn) in MDA-MB‑231 human breast cancer cells. The FEP-Mn complex was found to be more potent in its ability to inhibit cell proliferation and proteasome activity than the other compounds tested. Moreover, the FEP-Mn complex inhibited proteasomal chymotrypsin-like (CT-like) activity and induced the apoptosis of breast cancer cells in a dose-and time-dependent manner. Furthermore, the MCF-10A cells were much less sensitive to the FEP complexes compared with the MDA-MB-231 breast cancer cells. These results demonstrated that the FEP-Mn(II) complex has the potential to act as a proteasome inhibitor and apoptosis inducer and therefore has possible future applications in cancer chemotherapy.
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Affiliation(s)
- Zhen Zhang
- School of Pharmacy, Jining Medical University, Rizhao, Shandong 276826, P.R. China
| | - Caifeng Bi
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, Shandong 266100, P.R. China
| | - Yuhua Fan
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, Shandong 266100, P.R. China
| | - Huannan Wang
- Neurobiology Institute, Jining Medical University, Jining, Shandong 272100, P.R. China
| | - Yan Bao
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, Shandong 266100, P.R. China
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113
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Helsel ME, Franz KJ. Pharmacological activity of metal binding agents that alter copper bioavailability. Dalton Trans 2015; 44:8760-70. [PMID: 25797044 PMCID: PMC4425619 DOI: 10.1039/c5dt00634a] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Iron, copper and zinc are required nutrients for many organisms but also potent toxins if misappropriated. An overload of any of these metals can be cytotoxic and ultimately lead to organ failure, whereas deficiencies can result in anemia, weakened immune system function, and other medical conditions. Cellular metal imbalances have been implicated in neurodegenerative diseases, cancer and infection. It is therefore critical for living organisms to maintain careful control of both the total levels and subcellular distributions of these metals to maintain healthy function. This perspective explores several strategies envisioned to alter the bioavailability of metal ions by using synthetic metal-binding agents targeted for diseases where misappropriated metal ions are suspected of exacerbating cellular damage. Specifically, we discuss chemical properties that influence the pharmacological outcome of a subset of metal-binding agents known as ionophores, and review several examples that have shown multiple pharmacological activities in metal-related diseases, with a specific focus on copper.
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Affiliation(s)
- Marian E Helsel
- Duke University, Department of Chemistry, French Family Science Center, 124 Science Drive, 22708, Durham, NC, USA.
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114
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Chan-On W, Huyen NTB, Songtawee N, Suwanjang W, Prachayasittikul S, Prachayasittikul V. Quinoline-based clioquinol and nitroxoline exhibit anticancer activity inducing FoxM1 inhibition in cholangiocarcinoma cells. Drug Des Devel Ther 2015; 9:2033-47. [PMID: 25897210 PMCID: PMC4396583 DOI: 10.2147/dddt.s79313] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Purpose Fork head box M1 (FoxM1) is an oncogenic transcription factor frequently elevated in numerous cancers, including cholangiocarcinoma (CCA). A growing body of evidence documents its diverse functions contributing to tumorigenesis and cancer progression. As such, discovery of agents that can target FoxM1 would be valuable for the treatment of CCA. The quinoline-based compounds, namely clioquinol (CQ) and nitroxoline (NQ), represent a new class of anticancer drug. However, their efficacy and underlying mechanisms have not been elucidated in CCA. In this study, anticancer activities and inhibitory effects of CQ and NQ on FoxM1 signaling were explored using CCA cells. Methods The effects of CQ and NQ on cell viability and proliferation were evaluated using the colorimetric 3-(4,5-dimethylthiazol-2yl)-5-(3-carboxymethoxyphenyl)-(4-sulfophenyl)-2H-tetrazolium (MTS assay). Colony formation and cell migration affected by CQ and NQ were investigated using a clonogenic and a wound healing assay, respectively. To demonstrate the agents’ effects on FoxM1 signaling, expression levels of the target genes were quantitatively determined using real-time polymerase chain reaction. Results CQ and NQ significantly inhibited cell survival of HuCCT1 and Huh28 in a dose- and a time-dependent fashion. Further investigations using the rapidly proliferating HuCCT1 cells revealed significant suppression of cell proliferation and colony formation induced by low doses of the compounds. Treatment of CQ and NQ repressed expression of cyclin D1 but enhanced expression of p21. Most importantly, upon CQ and NQ treatment, expression of oncogenic FoxM1 was markedly decreased concomitant with downregulation of various FoxM1’s downstream targets including cdc25b, CENP-B, and survivin. In addition, the compounds distinctly impaired HuCCT1 migration as well as inhibited expression of matrix metalloproteinase (MMP)-2 and MMP-9. Conclusion Collectively, this study reports for the first time the anticancer effects of CQ and NQ against CCA cells, and highlights new insights into the mechanism of actions of the quinoline-based compounds to disrupt FoxM1 signaling.
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Affiliation(s)
- Waraporn Chan-On
- Center for Research and Innovation, Mahidol University, Bangkok, Thailand
| | - Nguyen Thi Bich Huyen
- Department of Clinical Microbiology and Applied Technology, Mahidol University, Bangkok, Thailand
| | - Napat Songtawee
- Center of Data Mining and Biomedical Informatics, Faculty of Medical Technology, Mahidol University, Bangkok, Thailand
| | | | - Supaluk Prachayasittikul
- Center of Data Mining and Biomedical Informatics, Faculty of Medical Technology, Mahidol University, Bangkok, Thailand
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115
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Fernandes AS, Flórido A, Saraiva N, Cerqueira S, Ramalhete S, Cipriano M, Cabral MF, Miranda JP, Castro M, Costa J, Oliveira NG. Role of the Copper(II) Complex Cu[15]pyN5 in Intracellular ROS and Breast Cancer Cell Motility and Invasion. Chem Biol Drug Des 2015; 86:578-88. [PMID: 25600158 DOI: 10.1111/cbdd.12521] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Revised: 12/02/2014] [Accepted: 01/08/2015] [Indexed: 12/29/2022]
Abstract
Multiple mechanisms related to metastases undergo redox regulation. Cu[15]pyN5 is a redox-active copper(II) complex previously studied as a chemotherapy sensitizer in mammary cells. The effects of a cotreatment with Cu[15]pyN5 and doxorubicin (dox) were evaluated in two human breast cancer cell lines: MCF7 (low aggressiveness) and MDA-MB-231 (highly aggressive). Cu[15]pyN5 decreased MCF7-directed cell migration. In addition, a cotreatment with dox and Cu[15]pyN5 reduced the proteolytic invasion of MDA-MB-231 cells. Cell detachment was not affected by exposure to these agents. Cu[15]pyN5 and dox significantly increased intracellular ROS in both cell lines. This increase could be at least partially due to H2 O2 accumulation. The combination of Cu[15]pyN5 with dox may be beneficial in breast cancer treatment as it could help reduce cancer cell migration and invasion. Moreover, the ligand [15]pyN5 has a high affinity for copper(II) and displays potential anti-angiogenic properties. Overall, we present a potential drug that might arrest the progression of breast cancer by different and complementary mechanisms.
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Affiliation(s)
- Ana S Fernandes
- CBIOS, Universidade Lusófona Research Center for Biosciences & Health Technologies, Campo Grande 376, Lisboa, 1749-024, Portugal
| | - Ana Flórido
- CBIOS, Universidade Lusófona Research Center for Biosciences & Health Technologies, Campo Grande 376, Lisboa, 1749-024, Portugal.,Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Av. Professor Gama Pinto, 1649-003, Lisboa, Portugal
| | - Nuno Saraiva
- CBIOS, Universidade Lusófona Research Center for Biosciences & Health Technologies, Campo Grande 376, Lisboa, 1749-024, Portugal
| | - Sara Cerqueira
- CBIOS, Universidade Lusófona Research Center for Biosciences & Health Technologies, Campo Grande 376, Lisboa, 1749-024, Portugal
| | - Sérgio Ramalhete
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Av. Professor Gama Pinto, 1649-003, Lisboa, Portugal
| | - Madalena Cipriano
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Av. Professor Gama Pinto, 1649-003, Lisboa, Portugal
| | - Maria Fátima Cabral
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Av. Professor Gama Pinto, 1649-003, Lisboa, Portugal
| | - Joana P Miranda
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Av. Professor Gama Pinto, 1649-003, Lisboa, Portugal
| | - Matilde Castro
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Av. Professor Gama Pinto, 1649-003, Lisboa, Portugal
| | - Judite Costa
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Av. Professor Gama Pinto, 1649-003, Lisboa, Portugal
| | - Nuno G Oliveira
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Av. Professor Gama Pinto, 1649-003, Lisboa, Portugal
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Lu H, Li S, Chen J, Xia J, Zhang J, Huang Y, Liu X, Wu HC, Zhao Y, Chai Z, Hu Y. Metal ions modulate the conformation and stability of a G-quadruplex with or without a small-molecule ligand. Metallomics 2015; 7:1508-14. [DOI: 10.1039/c5mt00188a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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117
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Wang J, Chang Y, Zhang P, Lie SQ, Gao PF, Huang CZ. Cu2+-mediated fluorescence switching of gold nanoclusters for the selective detection of clioquinol. Analyst 2015; 140:8194-200. [DOI: 10.1039/c5an01975c] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
In this contribution, a rapid and selective fluorescence switchable strategy was developed for clioquinol by taking gold nanoclusters as probes and Cu2+ as mediator, which is applicable to determination of clioquinol in cream with satisfactory results.
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Affiliation(s)
- Jian Wang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University) Ministry of Education
- College of Pharmaceutical Science
- Southwest University
- Chongqing 400715
- China
| | - Yong Chang
- Chongqing Key Laboratory of Biomedical Analysis (Southwest University)
- Chongqing Science & Technology Commission
- College of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
| | - Pu Zhang
- College of Physical Science and Technology
- Southwest University
- Chongqing 400715
- China
| | - Shao Qing Lie
- Chongqing Key Laboratory of Biomedical Analysis (Southwest University)
- Chongqing Science & Technology Commission
- College of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
| | - Peng Fei Gao
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University) Ministry of Education
- College of Pharmaceutical Science
- Southwest University
- Chongqing 400715
- China
| | - Cheng Zhi Huang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University) Ministry of Education
- College of Pharmaceutical Science
- Southwest University
- Chongqing 400715
- China
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Tabassum S, Asim A, Khan RA, Arjmand F, Rajakumar D, Balaji P, Akbarsha MA. A multifunctional molecular entity Cu II–Sn IV heterobimetallic complex as a potential cancer chemotherapeutic agent: DNA binding/cleavage, SOD mimetic, topoisomerase Iα inhibitory and in vitro cytotoxic activities. RSC Adv 2015; 5:47439-47450. [DOI: 10.1039/c5ra07333b] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2023] Open
Abstract
New chiral l-valine-derived Schiff base complexes with the bioactive heterocyclic ligand scaffold pyrazole (Hpz) were designed and synthesized with a view to find their potential as anticancer chemotherapeutic drug candidates.
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Affiliation(s)
- Sartaj Tabassum
- Department of Chemistry
- Aligarh Muslim University
- Aligarh-202002
- India
| | - Ahmad Asim
- Department of Chemistry
- Aligarh Muslim University
- Aligarh-202002
- India
| | - Rais Ahmad Khan
- Department of Chemistry
- King Saud University
- Riyadh
- Kingdom of Saudi Arabia
| | - Farukh Arjmand
- Department of Chemistry
- Aligarh Muslim University
- Aligarh-202002
- India
| | - Dhivya Rajakumar
- Department of Biomedical Science
- Bharathidasan University
- Tiruchirappalli 620 024
- India
| | - Perumalsamy Balaji
- Department of Biomedical Science
- Bharathidasan University
- Tiruchirappalli 620 024
- India
| | - Mohammad Abdulkader Akbarsha
- Mahatma Gandhi-Doerenkamp Center (MGDC) for Alternatives to Use of Animals in Life Science Education
- Bharathidasan University
- Tiruchirappalli 620 024
- India
- Department of Food Science and Nutrition
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119
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Zhang Z, Bi C, Fan Y, Zhang N, Deshmukh R, Yan X, Lv X, Zhang P, Zhang X, Dou QP. L-Ornithine Schiff base-copper and -cadmium complexes as new proteasome inhibitors and apoptosis inducers in human cancer cells. J Biol Inorg Chem 2015; 20:109-121. [PMID: 25467055 DOI: 10.1007/s00775-014-1219-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2014] [Accepted: 11/14/2014] [Indexed: 01/12/2023]
Abstract
Ubiquitin-proteasome system (UPS) plays a crucial role in many cellular processes such as cell cycle, proliferation and apoptosis. Aberrant activation of UPS may result in cellular transformation or other altered pathological conditions. Previous studies have shown that metal-based complexes could inhibit proteasome activity and induce apoptosis in certain human cancer cells. In the current study, we report that the cadmium and copper complexes with heterocycle-ornithine Schiff base are potent inhibitors of proteasomal chymotrypsin-like (CT-like) activity, leading to induction of apoptosis in cancer cells. Two novel copper-containing complexes and two novel cadmium-containing complexes with different heterocycle-ornithine Schiff base structures as ligands were synthesized and characterized. We found that complexes Cu1, Cd1 and Cd2 show proteasome-inhibitory activities in human breast cancer MDA-MB-231 and human prostate cancer LNCaP cells, resulting in the accumulation of p27, a natural proteasome substrate and other ubiquitinated proteins, followed by the induction of apoptosis. Our results suggest that metal complexes with heterocycle-ornithine Schiff base have proteasome-inhibitory capabilities and have the potential to be developed into novel anticancer drugs.
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Affiliation(s)
- Zhongyu Zhang
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, 238 Songling Road, Qingdao, 266100, Shandong, China
- Department of Oncology, Pharmacology and Pathology, Barbara Ann Karmanos Cancer Institute, School of Medicine, Wayne State University, 540.1 HWCRC, 4100 John R Road, Detroit, MI, 48201, USA
| | - Caifeng Bi
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, 238 Songling Road, Qingdao, 266100, Shandong, China.
| | - Yuhua Fan
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, 238 Songling Road, Qingdao, 266100, Shandong, China
| | - Nan Zhang
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, 238 Songling Road, Qingdao, 266100, Shandong, China
| | - Rahul Deshmukh
- Department of Oncology, Pharmacology and Pathology, Barbara Ann Karmanos Cancer Institute, School of Medicine, Wayne State University, 540.1 HWCRC, 4100 John R Road, Detroit, MI, 48201, USA
| | - Xingchen Yan
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, 238 Songling Road, Qingdao, 266100, Shandong, China
| | - Xiuwen Lv
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, 238 Songling Road, Qingdao, 266100, Shandong, China
| | - Pengfei Zhang
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, 238 Songling Road, Qingdao, 266100, Shandong, China
| | - Xia Zhang
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, 238 Songling Road, Qingdao, 266100, Shandong, China
| | - Q Ping Dou
- Department of Oncology, Pharmacology and Pathology, Barbara Ann Karmanos Cancer Institute, School of Medicine, Wayne State University, 540.1 HWCRC, 4100 John R Road, Detroit, MI, 48201, USA.
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120
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Li X, Bi CF, Fan YH, Zhang X, Meng XM, Cui LS. Synthesis, crystal structure and anticancer activity of a novel ternary copper(II) complex with Schiff base derived from 2-amino-4-fluorobenzoic acid and salicylaldehyde. INORG CHEM COMMUN 2014. [DOI: 10.1016/j.inoche.2014.10.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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121
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ElHusseiny AF, Eldissouky A, Al-Hamza AM, Hassan HH. Structure–property relationship studies of copper(I) complexes of nanosized hypodentate ligands and evaluation of their antitumor and antimicrobial activities. J COORD CHEM 2014. [DOI: 10.1080/00958972.2014.982551] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Amel F. ElHusseiny
- Faculty of Science, Chemistry Department, Alexandria University, Alexandria, Egypt
| | - Ali Eldissouky
- Faculty of Science, Chemistry Department, Alexandria University, Alexandria, Egypt
| | - Ahmed M. Al-Hamza
- Faculty of Science, Chemistry Department, Alexandria University, Alexandria, Egypt
| | - Hammed H.A.M. Hassan
- Faculty of Science, Chemistry Department, Alexandria University, Alexandria, Egypt
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122
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Singh DP, Pratap S, Pandey SK, Butcher RJ, Marverti G. N-(naphthyl)-N′-(methoxy carbonyl)thiocarbamide and its Cu(I) complex: synthesis, spectroscopic, X-ray, DFT and in vitro cytotoxicity study. J COORD CHEM 2014. [DOI: 10.1080/00958972.2014.979165] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Durga P. Singh
- Department of Chemistry (M.M.V), Banaras Hindu University, Varanasi, India
| | - Seema Pratap
- Department of Chemistry (M.M.V), Banaras Hindu University, Varanasi, India
| | - Sunil K. Pandey
- Department of Chemistry (M.M.V), Banaras Hindu University, Varanasi, India
| | - Ray J. Butcher
- Department of Chemistry, Howard University, Washington, DC, USA
| | - Gaetano Marverti
- Department of Biomedical Sciences, Metabolic and Neurosciences, University of Modena at Reggio Emilia, Modena, Italy
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123
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Heidary DK, Howerton BS, Glazer EC. Coordination of Hydroxyquinolines to a Ruthenium Bis-dimethyl-phenanthroline Scaffold Radically Improves Potency for Potential as Antineoplastic Agents. J Med Chem 2014; 57:8936-46. [DOI: 10.1021/jm501043s] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- David K. Heidary
- Department
of Chemistry, University of Kentucky, 505 Rose Street, Lexington, Kentucky 40506, United States
| | - Brock S. Howerton
- Department
of Chemistry, University of Kentucky, 505 Rose Street, Lexington, Kentucky 40506, United States
| | - Edith C. Glazer
- Department
of Chemistry, University of Kentucky, 505 Rose Street, Lexington, Kentucky 40506, United States
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124
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Fu Y, Yang Y, Zhou S, Liu Y, Yuan Y, Li S, Li C. Ciprofloxacin containing Mannich base and its copper complex induce antitumor activity via different mechanism of action. Int J Oncol 2014; 45:2092-100. [PMID: 25174498 DOI: 10.3892/ijo.2014.2611] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2014] [Accepted: 08/01/2014] [Indexed: 11/06/2022] Open
Abstract
The Mannich base containing ciprofloxacin and kojic acid structural units was prepared and evaluated in antitumor activity. The enhancement in antitumor activity was observed both from the Mannich base (IC(50): 103.3±5.0 µM for HepG2, 87.9±8.0 µM for HCT-116 cell) and its copper complex (IC(50): 11.5±1.8 µM for HepG2, 44.4±2.5 µM for HCT-116 cell) compared to the ciprofloxacin and kojic acid. The mechanistic studies via RT-PCR, cell cycle analysis, mitochondrial membrane potential measurement, inhibition of topoisomerase and molecular docking indicated that there is a different molecular mechanism between the Mannich base and its copper complex. The cytotoxicity of the Mannich base was involved in apoptosis, cell cycle arrest, depolarization of mitochondrial membrane and weaker topoisomerase II inhibition, but the copper complex exerted its cytotoxicity mainly through dual topoisomerase inhibition, especially stabilizing the intermediate of cleavage DNA-topoisomerase complex.
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Affiliation(s)
- Yun Fu
- Department of Molecular Biology and Biochemistry, Xinxiang Medical University, Xinxiang, Henan, P.R. China
| | - Yingli Yang
- Department of Molecular Biology and Biochemistry, Xinxiang Medical University, Xinxiang, Henan, P.R. China
| | - Sufeng Zhou
- Clinical Skill Training Center, Xinxiang Medical University, Xinxiang, Henan, P.R. China
| | - Youxun Liu
- Department of Molecular Biology and Biochemistry, Xinxiang Medical University, Xinxiang, Henan, P.R. China
| | - Yanbin Yuan
- Department of Surgery, The Third Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan, P.R. China
| | - Shaoshan Li
- Department of Surgery, The Third Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan, P.R. China
| | - Changzheng Li
- Department of Molecular Biology and Biochemistry, Xinxiang Medical University, Xinxiang, Henan, P.R. China
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125
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Prachayasittikul V, Pingaew R, Nantasenamat C, Prachayasittikul S, Ruchirawat S, Prachayasittikul V. Investigation of aromatase inhibitory activity of metal complexes of 8-hydroxyquinoline and uracil derivatives. Drug Des Devel Ther 2014; 8:1089-96. [PMID: 25152615 PMCID: PMC4140444 DOI: 10.2147/dddt.s67300] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
PURPOSE Estrogens play important roles in the pathogenesis and progression of breast cancer as well as estrogen-related diseases. Aromatase is a key enzyme in the rate-limiting step of estrogen production, in which its inhibition is one strategy for controlling estrogen levels to improve prognosis of estrogen-related cancers and diseases. Herein, a series of metal (Mn, Cu, and Ni) complexes of 8-hydroxyquinoline (8HQ) and uracil derivatives (4-9) were investigated for their aromatase inhibitory and cytotoxic activities. METHODS The aromatase inhibition assay was performed according to a Gentest™ kit using CYP19 enzyme, wherein ketoconazole and letrozole were used as reference drugs. The cytotoxicity was tested on normal embryonic lung cells (MRC-5) using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. RESULTS Only Cu complexes (6 and 9) exhibited aromatase inhibitory effect with IC50 0.30 and 1.7 μM, respectively. Cytotoxicity test against MRC-5 cells showed that Mn and Cu complexes (5 and 6), as well as free ligand 8HQ, exhibited activity with IC50 range 0.74-6.27 μM. CONCLUSION Cu complexes (6 and 9) were found to act as a novel class of aromatase inhibitor. Our findings suggest that these 8HQ-Cu-uracil complexes are promising agents that could be potentially developed as a selective anticancer agent for breast cancer and other estrogen-related diseases.
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Affiliation(s)
- Veda Prachayasittikul
- Department of Clinical Microbiology and Applied Technology, Faculty of Medical Technology, Mahidol University, Bangkok, Thailand
| | - Ratchanok Pingaew
- Department of Chemistry, Faculty of Science, Srinakharinwirot University, Bangkok, Thailand
| | - Chanin Nantasenamat
- Center of Data Mining and Biomedical Informatics, Faculty of Medical Technology, Mahidol University, Bangkok, Thailand
| | - Supaluk Prachayasittikul
- Center of Data Mining and Biomedical Informatics, Faculty of Medical Technology, Mahidol University, Bangkok, Thailand
| | - Somsak Ruchirawat
- Laboratory of Medicinal Chemistry, Chulabhorn Research Institute, Bangkok, Thailand ; Chulabhorn Graduate Institute, Bangkok, Thailand
| | - Virapong Prachayasittikul
- Department of Clinical Microbiology and Applied Technology, Faculty of Medical Technology, Mahidol University, Bangkok, Thailand
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Festa RA, Helsel ME, Franz KJ, Thiele DJ. Exploiting innate immune cell activation of a copper-dependent antimicrobial agent during infection. ACTA ACUST UNITED AC 2014; 21:977-87. [PMID: 25088681 DOI: 10.1016/j.chembiol.2014.06.009] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Revised: 06/16/2014] [Accepted: 06/23/2014] [Indexed: 12/18/2022]
Abstract
Recalcitrant microbial infections demand new therapeutic options. Here we present an approach that exploits two prongs of the host immune cell antimicrobial response: the oxidative burst and the compartmentalization of copper (Cu) within phagolysosomes. The prochelator QBP is a nontoxic protected form of 8-hydroxyquinoline (8HQ) in which a pinanediol boronic ester blocks metal ion coordination by 8HQ. QBP is deprotected via reactive oxygen species produced by activated macrophages, creating 8HQ and eliciting Cu-dependent killing of the fungal pathogen Cryptococcus neoformans in vitro and in mouse pulmonary infection. 8HQ ionophoric activity increases intracellular Cu, overwhelming the Cu-resistance mechanisms of C. neoformans to elicit fungal killing. The Cu-dependent antimicrobial activity of 8HQ against a spectrum of microbial pathogens suggests that this strategy may have broad utility. The conditional activation of Cu ionophores by innate immune cells intensifies the hostile antimicrobial environment and represents a promising approach to combat infectious disease.
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Affiliation(s)
- Richard A Festa
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, NC 27710, USA
| | - Marian E Helsel
- Department of Chemistry, Duke University, Durham, NC 27708, USA
| | | | - Dennis J Thiele
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, NC 27710, USA.
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A novel proteasome inhibitor suppresses tumor growth via targeting both 19S proteasome deubiquitinases and 20S proteolytic peptidases. Sci Rep 2014; 4:5240. [PMID: 24912524 PMCID: PMC4050382 DOI: 10.1038/srep05240] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2013] [Accepted: 05/21/2014] [Indexed: 11/27/2022] Open
Abstract
The successful development of bortezomib-based therapy for treatment of multiple myeloma has established proteasome inhibition as an effective therapeutic strategy, and both 20S proteasome peptidases and 19S deubiquitinases (DUBs) are becoming attractive targets of cancer therapy. It has been reported that metal complexes, such as copper complexes, inhibit tumor proteasome. However, the involved mechanism of action has not been fully characterized. Here we report that (i) copper pyrithione (CuPT), an alternative to tributyltin for antifouling paint biocides, inhibits the ubiquitin-proteasome system (UPS) via targeting both 19S proteasome-specific DUBs and 20S proteolytic peptidases with a mechanism distinct from that of the FDA-approved proteasome inhibitor bortezomib; (ii) CuPT potently inhibits proteasome-specific UCHL5 and USP14 activities; (iii) CuPT inhibits tumor growth in vivo and induces cytotoxicity in vitro and ex vivo. This study uncovers a novel class of dual inhibitors of DUBs and proteasome and suggests a potential clinical strategy for cancer therapy.
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128
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Garcia L, Franzoni S, Mussi F, Aumont-Niçaise M, Bertrand H, Desmadril M, Pelosi G, Buschini A, Policar C. Apo-neocarzinostatin: A protein carrier for Cu(II) glycocomplexes and Cu(II) into U937 and HT29 cell lines. J Inorg Biochem 2014; 135:40-4. [DOI: 10.1016/j.jinorgbio.2014.02.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2013] [Revised: 12/25/2013] [Accepted: 02/15/2014] [Indexed: 12/15/2022]
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129
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Abstract
Copper is an essential element in many biological processes. The critical functions associated with copper have resulted from evolutionary harnessing of its potent redox activity. This same property also places copper in a unique role as a key modulator of cell signal transduction pathways. These pathways are the complex sequence of molecular interactions that drive all cellular mechanisms and are often associated with the interplay of key enzymes including kinases and phosphatases but also including intracellular changes in pools of smaller molecules. A growing body of evidence is beginning to delineate the how, when and where of copper-mediated control over cell signal transduction. This has been driven by research demonstrating critical changes to copper homeostasis in many disorders including cancer and neurodegeneration and therapeutic potential through control of disease-associated cell signalling changes by modulation of copper-protein interactions. This timely review brings together for the first time the diverse actions of copper as a key regulator of cell signalling pathways and discusses the potential strategies for controlling disease-associated signalling processes using copper modulators. It is hoped that this review will provide a valuable insight into copper as a key signal regulator and stimulate further research to promote our understanding of copper in disease and therapy.
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Abstract
SIGNIFICANCE Protein tyrosine phosphatases (PTPs) play essential roles in controlling cell proliferation, differentiation, communication, and adhesion. The dysregulated activities of PTPs are involved in the pathogenesis of a number of human diseases such as cancer, diabetes, and autoimmune diseases. RECENT ADVANCES Many PTPs have emerged as potential new targets for novel drug discovery. PTP inhibitors have attracted much attention. Many PTP inhibitors have been developed. Some of them have been proven to be efficient in lowering blood glucose levels in vivo or inhibiting tumor xenograft growth. CRITICAL ISSUES Some metal ions and metal complexes potently inhibit PTPs. The metal atoms within metal complexes play an important role in PTP binding, while ligand structures influence the inhibitory potency and selectivity. Some metal complexes can penetrate the cell membrane and selectively bind to their targeting PTPs, enhancing the phosphorylation of the related substrates and influencing cellular metabolism. PTP inhibition is potentially involved in the pathophysiological and toxicological processes of metals and some PTPs may be cellular targets of certain metal-based therapeutic agents. FUTURE DIRECTIONS Investigating the structural basis of the interactions between metal complexes and PTPs would facilitate a comprehensive understanding of the structure-activity relationship and accelerate the development of promising metal-based drugs targeting specific PTPs.
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Affiliation(s)
- Liping Lu
- Key Laboratory of Chemical Biology and Molecular Engineering of the Education Ministry, Institute of Molecular Science, Shanxi University , Taiyuan, People's Republic of China
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131
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Kenneth NS, Hucks GE, Kocab AJ, McCollom AL, Duckett CS. Copper is a potent inhibitor of both the canonical and non-canonical NFκB pathways. Cell Cycle 2014; 13:1006-14. [PMID: 24552822 DOI: 10.4161/cc.27922] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Copper is an essential trace element that plays key roles in many metabolic processes. Homeostatic regulation of intracellular copper is normally tightly controlled, but deregulated copper levels are found in numerous metabolic and neurodegenerative diseases, as well as in a range of neoplasms. There are conflicting reports regarding the exact role of copper in the regulation of NFκB-responsive genes, specifically whether copper leads to increased activation of the NFκB pathways, or downregulation. Here we show that increased intracellular levels of copper, using the ionophore clioquinol, leads to a potent inhibition of NFκB pathways, induced by multiple distinct stimuli. Addition of copper to cells inhibits ubiquitin-mediated degradation of IκBα by preventing its phoshorylation by the upstream IKK complex. Intriguingly, copper-dependent inhibition of NFκB can be reversed by the addition of the reducing agent, N-acetylcysteine (NAC). These results suggest that the oxidative properties of excess copper prevent NFκB activation by blocking IκBα destruction, and that NFκB activity should be assessed in diseases associated with copper excess.
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Affiliation(s)
- Niall S Kenneth
- Department of Pathology; The University of Michigan Medical School; Ann Arbor, MI USA; Translational Oncology Program; The University of Michigan Medical School; Ann Arbor, MI USA
| | - George E Hucks
- Translational Oncology Program; The University of Michigan Medical School; Ann Arbor, MI USA; Department of Pediatrics; The University of Michigan Medical School; Ann Arbor, MI USA
| | - Andrew J Kocab
- Department of Pathology; The University of Michigan Medical School; Ann Arbor, MI USA; Translational Oncology Program; The University of Michigan Medical School; Ann Arbor, MI USA; Graduate Program in Immunology; The University of Michigan Medical School; Ann Arbor, MI USA
| | - Annie L McCollom
- Department of Pathology; The University of Michigan Medical School; Ann Arbor, MI USA; Translational Oncology Program; The University of Michigan Medical School; Ann Arbor, MI USA
| | - Colin S Duckett
- Department of Pathology; The University of Michigan Medical School; Ann Arbor, MI USA; Translational Oncology Program; The University of Michigan Medical School; Ann Arbor, MI USA; Department of Internal Medicine; The University of Michigan Medical School; Ann Arbor, MI USA
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Metcalf R, Scott LM, Daniel KG, Dou QP. Proteasome inhibitor patents (2010 - present). Expert Opin Ther Pat 2014; 24:369-82. [PMID: 24450483 DOI: 10.1517/13543776.2014.877444] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
INTRODUCTION Over the past 3 years, numerous patents and patent applications have been submitted and published involving compounds designed to inhibit the proteasome. Proteasome inhibition has been of great interest in cancer research since disruption of proteolysis leads to a significant buildup of cytotoxic proteins and activation of apoptotic pathways, particularly in rapidly proliferating cells. The current standards in proteasome inhibition are the only FDA-approved inhibitors, bortezomib and carfilzomib. Although these drugs are quite effective in treating multiple myeloma and other blood tumors, there are shortcomings, including toxicities and resistance. Most of the current patents attempt to improve on existing compounds, by increasing bioavailability and selectivity, while attempting to reduce toxicity. A general categorization of similar compounds was employed to evaluate and compare drug design strategies. AREAS COVERED This review focuses on novel compounds and subsequent analogs developed for proteasome inhibition, used in preventing and treating human cancers. A comprehensive description and categorization of patents related to each type of compound and its derivatives, as well as their uses and efficacies as anticancer agents is included. A review of combination therapy patents has also been included. EXPERT OPINION Although there are many diverse chemical scaffolds being published, there are few patented proteasome inhibitors whose method of inhibition is genuinely novel. Most patents utilize a destructive chemical warhead to attack the catalytic threonine residue of the proteasome active sites. Few patents try to depart from this, emphasizing the need for developing new mechanisms of action and specific targeting.
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Affiliation(s)
- Rainer Metcalf
- Moffitt Cancer Center, Chemical Biology Core , 12902 Magnolia Dr SRB3, Tampa, FL 33612 , USA
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133
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Tomco D, Schmitt S, Heeg MJ, Dou QP, Verani CN. Inhibition of the 26S proteasome as a possible mechanism for toxicity of heavy metal species. J Inorg Biochem 2014; 132:96-103. [PMID: 24452142 DOI: 10.1016/j.jinorgbio.2013.12.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2013] [Revised: 12/24/2013] [Accepted: 12/24/2013] [Indexed: 01/23/2023]
Abstract
In this paper we report on the synthesis of five metal complexes coordinated to the [NN'O] ligand HL(iodo) (2,4-diiodo-6-((pyridine-2-ylmethylamino)methyl)phenol), namely [Al(III)(L(iodo))2]ClO4 (1), [Cd(II)(L(iodo))Cl]·H2O (2), [Hg(II)(L(iodo))2]·4DMSO (3), [Pb(II)(L(iodo))NO3] (4), and [Sn(IV)(L(iodo))Cl3] (5). Species 1-5 are thoroughly characterized by spectroscopic and spectrometric methods, as well as by elemental analysis. X-ray crystallography results for complex 3 indicate the presence of Hg(II) ion hexacoordinated to two facially oriented [NN'O] ligands, whereas for complex 5 an Sn(IV) ion chelates to one deprotonated ligand and three chlorido coligands. The toxicity of species 1-5 is tested against transformed human prostate epithelial cells CRL2221 and we observe that the five complexes demonstrate high levels of cell growth inhibition in a dose-dependent manner. In order to evaluate the relationship between these species and the proteasome, we test 1-5 against purified 20S, CRL2221 cell extracts, and intact cells, followed by the measurement of the percent chymotrypsin-like activity inhibition levels. Results suggest a good correlation between the toxicity of [Hg(II)(L(iodo))2]·4DMSO (3) and proteasome inhibition.
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Affiliation(s)
- Dajena Tomco
- Department of Chemistry, Wayne State University, 5101 Cass Ave., Detroit, MI 48202, USA
| | - Sara Schmitt
- Barbara Ann Karmanos Cancer Institute, School of Medicine, Wayne State University, Detroit, MI 48201, USA; Department of Oncology, School of Medicine, Wayne State University, Detroit, MI 48201, USA; Department of Pathology, School of Medicine, Wayne State University, Detroit, MI 48201, USA; Department of Pharmacology, School of Medicine, Wayne State University, Detroit, MI 48201, USA
| | - Mary Jane Heeg
- Department of Chemistry, Wayne State University, 5101 Cass Ave., Detroit, MI 48202, USA
| | - Q Ping Dou
- Barbara Ann Karmanos Cancer Institute, School of Medicine, Wayne State University, Detroit, MI 48201, USA; Department of Oncology, School of Medicine, Wayne State University, Detroit, MI 48201, USA; Department of Pathology, School of Medicine, Wayne State University, Detroit, MI 48201, USA; Department of Pharmacology, School of Medicine, Wayne State University, Detroit, MI 48201, USA.
| | - Cláudio N Verani
- Department of Chemistry, Wayne State University, 5101 Cass Ave., Detroit, MI 48202, USA.
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134
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Kharadi GJ. Effect of substituent of terpyridines on the in vitro antioxidant, antitubercular, biocidal and fluorescence studies of copper(II) complexes with clioquinol. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 117:662-668. [PMID: 24128919 DOI: 10.1016/j.saa.2013.09.049] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2013] [Accepted: 09/07/2013] [Indexed: 06/02/2023]
Abstract
An octahedral complexes of copper with clioquinol(CQ) and substituted terpyridine have been synthesized. The Cu(II) complexes have been characterized by elemental analyses, thermogravimetric analyses, magnetic moment measurements, FT-IR, electronic, (1)HNMR and FAB mass spectra. Antimycobacterial screening of ligand and its copper compound against Mycobacterium tuberculosis shows clear enhancement in the antitubercular activity upon copper complexation. Ferric-reducing anti-oxidant power of all complexes were measured. The fluorescence spectra of complexes show red shift, which may be due to the chelation by the ligands to the metal ion. It enhances ligand ability to accept electrons and decreases the electron transition energy. The antimicrobial efficiency of the complexes were tested on five different microorganisms and showed good biological activity.
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Affiliation(s)
- G J Kharadi
- Department of Chemistry, Navjivan Science College, Gujarat University, Dahod 389151, Gujarat, India.
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135
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Nardon C, Schmitt SM, Yang H, Zuo J, Fregona D, Dou QP. Gold(III)-dithiocarbamato peptidomimetics in the forefront of the targeted anticancer therapy: preclinical studies against human breast neoplasia. PLoS One 2014; 9:e84248. [PMID: 24392119 PMCID: PMC3879379 DOI: 10.1371/journal.pone.0084248] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2013] [Accepted: 11/13/2013] [Indexed: 11/19/2022] Open
Abstract
Since the serendipitous discovery of cisplatin, platinum-based drugs have become well-established antitumor agents, despite the fact that their clinical use is limited by many severe side-effects. In order to both improve the chemotherapeutic index and broaden the therapeutic spectrum of current drugs, our most recent anti-neoplastic agents, Au(III) complexes, were designed as carrier-mediated delivery systems exploiting peptide transporters, which are up-regulated in some cancers. Among all, we focused on two compounds and tested them on human MDA-MB-231 (resistant to cisplatin) breast cancer cell cultures and xenografts, discovering the proteasome as a major target both in vitro and in vivo. 53% inhibition of breast tumor growth in mice was observed after 27 days of treatment at 1.0 mg kg−1 d−1, compared to control. Remarkably, if only the most responsive mice are taken into account, 85% growth inhibition, with some animals showing tumor shrinkage, was observed after 13 days. These results led us to file an international patent, recognizing this class of gold(III) peptidomimetics as suitable candidates for entering phase I clinical trials.
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Affiliation(s)
- Chiara Nardon
- Department of Chemical Sciences, University of Padova, Padova, Italy
- Molecular Therapeutics Program, Barbara Ann Karmanos Cancer Institute, Departments of Oncology, Pharmacology and Pathology, School of Medicine, Wayne State University, Detroit, Michigan, United States of America
| | - Sara M. Schmitt
- Molecular Therapeutics Program, Barbara Ann Karmanos Cancer Institute, Departments of Oncology, Pharmacology and Pathology, School of Medicine, Wayne State University, Detroit, Michigan, United States of America
| | - Huanjie Yang
- Department of Chemical Sciences, University of Padova, Padova, Italy
| | - Jian Zuo
- Molecular Therapeutics Program, Barbara Ann Karmanos Cancer Institute, Departments of Oncology, Pharmacology and Pathology, School of Medicine, Wayne State University, Detroit, Michigan, United States of America
- College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, Shandong, China
| | - Dolores Fregona
- Department of Chemical Sciences, University of Padova, Padova, Italy
- * E-mail: (DF); (QPD)
| | - Q. Ping Dou
- Molecular Therapeutics Program, Barbara Ann Karmanos Cancer Institute, Departments of Oncology, Pharmacology and Pathology, School of Medicine, Wayne State University, Detroit, Michigan, United States of America
- * E-mail: (DF); (QPD)
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136
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Gobec M, Kljun J, Sosič I, Mlinarič-Raščan I, Uršič M, Gobec S, Turel I. Structural characterization and biological evaluation of a clioquinol–ruthenium complex with copper-independent antileukaemic activity. Dalton Trans 2014; 43:9045-51. [DOI: 10.1039/c4dt00463a] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The organoruthenium clioquinol complex induces copper-independent cell death in leukaemia cells by proteasome-independent inhibition of the NFκB signalling pathway.
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Affiliation(s)
- Martina Gobec
- Faculty of Pharmacy
- University of Ljubljana
- SI-1000 Ljubljana, Slovenia
| | - Jakob Kljun
- EN-FIST Centre of Excellence
- SI-1000 Ljubljana, Slovenia
- Faculty of Chemistry and Chemical Technology
- University of Ljubljana
- SI-1000 Ljubljana, Slovenia
| | - Izidor Sosič
- Faculty of Pharmacy
- University of Ljubljana
- SI-1000 Ljubljana, Slovenia
| | | | - Matija Uršič
- Faculty of Chemistry and Chemical Technology
- University of Ljubljana
- SI-1000 Ljubljana, Slovenia
| | - Stanislav Gobec
- Faculty of Pharmacy
- University of Ljubljana
- SI-1000 Ljubljana, Slovenia
| | - Iztok Turel
- EN-FIST Centre of Excellence
- SI-1000 Ljubljana, Slovenia
- Faculty of Chemistry and Chemical Technology
- University of Ljubljana
- SI-1000 Ljubljana, Slovenia
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137
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Al-Omari S. Toward a molecular understanding of the photosensitizer-copper interaction for tumor destruction. Biophys Rev 2013; 5:305-311. [PMID: 28510111 PMCID: PMC5418419 DOI: 10.1007/s12551-013-0112-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2012] [Accepted: 02/27/2013] [Indexed: 01/09/2023] Open
Abstract
The aim of this study was to shown that the photosensitizer in photodynamic therapy (PDT) can contribute to the dark toxicity and phototoxicity of the tumor by binding with copper. This binding process can remove the copper from the body, stopping angiogenesis as well as activating the mechanisms of cell death, such as apoptosis and necrosis. In PDT, this coupling may be considered a new route for fighting cancer in addition to those already known which involve reactive oxygen species.
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Affiliation(s)
- Saleh Al-Omari
- Department of Physics, Faculty of Science, The Hashemite University, Zarqa, 13115, Jordan.
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138
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Allegra A, Alonci A, Gerace D, Russo S, Innao V, Calabrò L, Musolino C. New orally active proteasome inhibitors in multiple myeloma. Leuk Res 2013; 38:1-9. [PMID: 24239172 DOI: 10.1016/j.leukres.2013.10.018] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2013] [Revised: 10/17/2013] [Accepted: 10/20/2013] [Indexed: 12/25/2022]
Abstract
Bortezomib is the first proteasome inhibitor approved for the therapy of multiple myeloma (MM). Although Bortezomib has renovated the treatment of MM, a considerable proportion of subjects fail to respond to Bortezomib treatment and almost all patients relapse from this drug either alone or when used in combination therapies. However, the good clinical outcome of Bortezomib treatment in MM patients gave impulsion for the development of second generation proteasome inhibitors with the ambition of improving efficacy of proteasome inhibition, enhancing antitumor activity, and decreasing toxicity, as well as providing flexible dosing schedules and patient convenience. This review provides an overview of the role of oral proteasome inhibitors including Marizomib, Oprozomib, Delanzomib, chemical proteasome inhibitors, and cinnabaramides, in the therapy of MM, focusing on developments over the past five years. These emerging drugs with different mechanisms of action have exhibited promising antitumor activity in patients with relapsed/refractory MM, and they are creating chances to target multiple pathways, overcome resistance, and improve clinical outcomes, mainly for those subjects who are refractory to approved agents. Future steps in the clinical development of oral inhibitors include the optimization of the schedule and the definition of their antitumor activity in MM.
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Affiliation(s)
| | - Andrea Alonci
- Division of Hematology University of Messina, Messina, Italy
| | - Demetrio Gerace
- Division of Hematology University of Messina, Messina, Italy
| | - Sabina Russo
- Division of Hematology University of Messina, Messina, Italy
| | - Vanessa Innao
- Division of Hematology University of Messina, Messina, Italy
| | - Laura Calabrò
- Division of Hematology University of Messina, Messina, Italy
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139
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Cao B, Li J, Zhu J, Shen M, Han K, Zhang Z, Yu Y, Wang Y, Wu D, Chen S, Sun A, Tang X, Zhao Y, Qiao C, Hou T, Mao X. The antiparasitic clioquinol induces apoptosis in leukemia and myeloma cells by inhibiting histone deacetylase activity. J Biol Chem 2013; 288:34181-34189. [PMID: 24114842 DOI: 10.1074/jbc.m113.472563] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The antiparasitic clioquinol (CQ) represents a class of novel anticancer drugs by interfering with proteasome activity. In the present study, we found that CQ induced blood cancer cell apoptosis by inhibiting histone deacetylases (HDACs). CQ accumulated the acetylation levels of several key proteins including histone H3 (H3), p53, HSP90, and α-tubulin. In the mechanistic study, CQ was found to down-regulate HDAC1, -3, -4, and -5 in both myeloma and leukemia cells. Computer modeling analysis revealed that CQ was well docked into the active pocket of the enzyme, where the oxygen and nitrogen atoms in CQ formed stable coordinate bonds with the zinc ion, and the hydroxyl group from CQ formed an effective hydrogen bond with Asp-267. Moreover, co-treatment with CQ and zinc/copper chloride led to decreased Ac-H3. Furthermore, CQ inhibited the activity of Class I and IIa HDACs in the cell-free assays, demonstrating that CQ interfered with HDAC activity. By inhibiting HDAC activity, CQ induced expression of p21, p27, and p53, cell cycle arrest at G1 phase, and cell apoptosis. This study suggested that the HDAC enzymes are targets of CQ, which provided a novel insight into the molecular mechanism of CQ in the treatment of hematological malignancies.
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Affiliation(s)
- Biyin Cao
- Cyrus Tang Hematology Center, Soochow University, Suzhou, China 215123
| | - Jie Li
- Cyrus Tang Hematology Center, Soochow University, Suzhou, China 215123
| | - Jingyu Zhu
- Cyrus Tang Hematology Center, Soochow University, Suzhou, China 215123
| | - Mingyun Shen
- Institute of Functional Nano & Soft Materials, Soochow University, Suzhou, China 215123
| | - Kunkun Han
- Cyrus Tang Hematology Center, Soochow University, Suzhou, China 215123
| | - Zubin Zhang
- Cyrus Tang Hematology Center, Soochow University, Suzhou, China 215123
| | - Yang Yu
- Department of Pharmacology, Pharmacy School, Soochow University, Suzhou, China 215123
| | - Yali Wang
- Cyrus Tang Hematology Center, Soochow University, Suzhou, China 215123
| | - Depei Wu
- Jiangsu Institute of Hematology, First Affiliated Hospital of Soochow University, Suzhou, China 215006
| | - Suning Chen
- Jiangsu Institute of Hematology, First Affiliated Hospital of Soochow University, Suzhou, China 215006
| | - Aining Sun
- Jiangsu Institute of Hematology, First Affiliated Hospital of Soochow University, Suzhou, China 215006
| | - Xiaowen Tang
- Jiangsu Institute of Hematology, First Affiliated Hospital of Soochow University, Suzhou, China 215006
| | - Yun Zhao
- Cyrus Tang Hematology Center, Soochow University, Suzhou, China 215123
| | - Chunhua Qiao
- Department of Pharmacology, Pharmacy School, Soochow University, Suzhou, China 215123
| | - Tingjun Hou
- Institute of Functional Nano & Soft Materials, Soochow University, Suzhou, China 215123
| | - Xinliang Mao
- Cyrus Tang Hematology Center, Soochow University, Suzhou, China 215123; Department of Pharmacology, Pharmacy School, Soochow University, Suzhou, China 215123.
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140
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Santini C, Pellei M, Gandin V, Porchia M, Tisato F, Marzano C. Advances in Copper Complexes as Anticancer Agents. Chem Rev 2013; 114:815-62. [DOI: 10.1021/cr400135x] [Citation(s) in RCA: 1128] [Impact Index Per Article: 102.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Carlo Santini
- Scuola
di Scienze e Tecnologie−Sez. Chimica, Università di Camerino, via S. Agostino 1, 62032 Camerino, Macerata, Italy
| | - Maura Pellei
- Scuola
di Scienze e Tecnologie−Sez. Chimica, Università di Camerino, via S. Agostino 1, 62032 Camerino, Macerata, Italy
| | - Valentina Gandin
- Dipartimento
di Scienze del Farmaco, Università di Padova, via Marzolo
5, 35131 Padova, Italy
| | | | | | - Cristina Marzano
- Dipartimento
di Scienze del Farmaco, Università di Padova, via Marzolo
5, 35131 Padova, Italy
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141
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Prachayasittikul V, Prachayasittikul S, Ruchirawat S, Prachayasittikul V. 8-Hydroxyquinolines: a review of their metal chelating properties and medicinal applications. DRUG DESIGN DEVELOPMENT AND THERAPY 2013; 7:1157-78. [PMID: 24115839 PMCID: PMC3793592 DOI: 10.2147/dddt.s49763] [Citation(s) in RCA: 266] [Impact Index Per Article: 24.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Metal ions play an important role in biological processes and in metal homeostasis. Metal imbalance is the leading cause for many neurodegenerative diseases such as Alzheimer’s disease, Parkinson’s disease, and multiple sclerosis. 8-Hydroxyquinoline (8HQ) is a small planar molecule with a lipophilic effect and a metal chelating ability. As a result, 8HQ and its derivatives hold medicinal properties such as antineurodegenerative, anticancer, antioxidant, antimicrobial, anti-inflammatory, and antidiabetic activities. Herein, diverse bioactivities of 8HQ and newly synthesized 8HQ-based compounds are discussed together with their mechanisms of actions and structure–activity relationships.
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Affiliation(s)
- Veda Prachayasittikul
- Department of Clinical Microbiology and Applied Technology, Faculty of Medical Technology, Bangkok, Thailand
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142
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Khan HY, Zubair H, Faisal M, Ullah MF, Farhan M, Sarkar FH, Ahmad A, Hadi SM. Plant polyphenol induced cell death in human cancer cells involves mobilization of intracellular copper ions and reactive oxygen species generation: a mechanism for cancer chemopreventive action. Mol Nutr Food Res 2013; 58:437-46. [PMID: 24123728 DOI: 10.1002/mnfr.201300417] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2013] [Revised: 07/18/2013] [Accepted: 07/24/2013] [Indexed: 11/09/2022]
Abstract
SCOPE Anticancer polyphenolic nutraceuticals from fruits, vegetables, and spices are generally recognized as antioxidants, but can be prooxidants in the presence of copper ions. We earlier proposed a mechanism for such activity of polyphenols and now we provide data in multiple cancer cell lines in support of our hypothesis. METHODS AND RESULTS Through multiple assays, we show that polyphenols luteolin, apigenin, epigallocatechin-3-gallate, and resveratrol are able to inhibit cell proliferation and induce apoptosis in different cancer cell lines. Such cell death is prevented to a significant extent by cuprous chelator neocuproine and reactive oxygen species scavengers. We also show that normal breast epithelial cells, cultured in a medium supplemented with copper, become sensitized to polyphenol-induced growth inhibition. CONCLUSION Since the concentration of copper is significantly elevated in cancer cells, our results strengthen the idea that an important anticancer mechanism of plant polyphenols is mediated through intracellular copper mobilization and reactive oxygen species generation leading to cancer cell death. Moreover, this prooxidant chemopreventive mechanism appears to be a mechanism common to several polyphenols with diverse chemical structures and explains the preferential cytotoxicity of these compounds toward cancer cells.
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Affiliation(s)
- Husain Yar Khan
- Department of Biochemistry, Faculty of Life Sciences, AMU, Aligarh, India
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143
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Han J, Liu L, Yue X, Chang J, Shi W, Hua Y. A binuclear complex constituted by diethyldithiocarbamate and copper(I) functions as a proteasome activity inhibitor in pancreatic cancer cultures and xenografts. Toxicol Appl Pharmacol 2013; 273:477-83. [PMID: 24060341 DOI: 10.1016/j.taap.2013.09.009] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2013] [Revised: 09/07/2013] [Accepted: 09/12/2013] [Indexed: 01/01/2023]
Abstract
It is a therapeutic strategy for cancers including pancreatic to inhibit proteasome activity. Disulfiram (DSF) may bind copper (Cu) to form a DSF-Cu complex. DSF-Cu is capable of inducing apoptosis in cancer cells by inhibiting proteasome activity. DSF is rapidly converted to diethyldithiocarbamate (DDTC) within bodies. Copper(II) absorbed by bodies is reduced to copper(I) when it enters cells. We found that DDTC and copper(I) could form a binuclear complex which might be entitled DDTC-Cu(I), and it had been synthesized by us in the laboratory. This study is to investigate the anticancer potential of this complex on pancreatic cancer and the possible mechanism. Pancreatic cancer cell lines, SW1990, PANC-1 and BXPC-3 were used for in vitro assays. Female athymic nude mice grown SW1990 xenografts were used as animal models. Cell counting kit-8 (cck-8) assay and flow cytometry were used for analyzing apoptosis in cells. A 20S proteasome assay kit was used in proteasome activity analysis. Western blot (WB) and immunohistochemistry (IHC) and terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) assays were used in tumor sample analysis. The results suggest that DDTC-Cu(I) inhibit pancreatic cancer cell proliferation and proteasome activity in vitro and in vivo. Accumulation of ubiquitinated proteins, and increased p27 as well as decreased NF-κB expression were detected in tumor tissues of DDTC-Cu(I)-treated group. Our data indicates that DDTC-Cu(I) is an effective proteasome activity inhibitor with the potential to be explored as a drug for pancreatic cancer.
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Affiliation(s)
- Jinbin Han
- Department of Integrative Oncology, Fudan University Shanghai Cancer Center, Shanghai 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China; Shanghai Clinical Center, Chinese Academy of Sciences/Xuhui Central Hospital, Shanghai 200031, China.
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144
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Vranec P, Potočňák I. Low-dimensional compounds containing bioactive ligands. Part VI. Spectral and structural characterizations of a unique zinc(II) compound with biologically active ligand — clioquinol. INORG CHEM COMMUN 2013. [DOI: 10.1016/j.inoche.2013.06.028] [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]
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Pharmacodynamic study of disulfiram in men with non-metastatic recurrent prostate cancer. Prostate Cancer Prostatic Dis 2013; 16:357-61. [PMID: 23958896 PMCID: PMC3830644 DOI: 10.1038/pcan.2013.28] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Revised: 07/01/2013] [Accepted: 07/21/2013] [Indexed: 01/15/2023]
Abstract
BACKGROUND Preclinical drug screens identified disulfiram as a potent in vitro inhibitor of prostate cancer (PCa) cell growth. Although many mechanisms for its anticancer activity have been proposed, tumor suppressor gene re-expression through promoter demethylation emerged as one of the more plausible. METHODS We conducted an open-label, dose escalation trial of disulfiram in men with non-metastatic recurrent PCa after local therapy. Dose escalation occurred if a demethylating 'response' (that is, 10% decrease in peripheral blood mononuclear cell (PBMC) global 5-methyl cytosine (5(me)C) content) was observed in <3 patients in cohort 1. Cohorts 1 and 2 received disulfiram 250 mg and 500 mg daily, respectively. The primary end point was the proportion of subjects with a demethylation response. Secondary end points included the rate of PSA progression at 6 months, changes in PSA doubling time and safety/tolerability. RESULTS Changes in global 5(me)C content were observed in two of nine patients (22.2%) in cohort 1 and 3 of 10 (30.0%) in cohort 2. Only five subjects were on trial for 6 months, all were in cohort 1 and all had PSA progression by 6 months. No changes in PSA kinetics were observed in either cohort. Disulfiram was poorly tolerated with six patients experiencing grade 3 adverse events (three per cohort). Three of the responders displayed pretreatment instability in their 5(me)C content. CONCLUSIONS A minority of patients had transient global PBMC demethylation changes. Instability in 5(me)C may limit the reproducibility of these findings, limiting our ability to confirm our hypothesis. Given the toxicities and no clinical benefits, further development of disulfiram should not be pursued in this population.
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146
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D-penicillamine and other low molecular weight thiols: review of anticancer effects and related mechanisms. Cancer Lett 2013; 337:8-21. [PMID: 23727371 DOI: 10.1016/j.canlet.2013.05.027] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2013] [Revised: 05/21/2013] [Accepted: 05/22/2013] [Indexed: 01/13/2023]
Abstract
Low molecular weight thiols (LMWTs) like N-acetyl cysteine, D-penicillamine, captopril, Disulfiram and Amifostine, etc. have been used as chemo-preventive agents. Recent studies have reported cell growth inhibition and cytotoxicity in several different types of cancer cells following treatment with several LMWTs. Cytotoxic and cytostatic effects of LMWTs may involve interaction of the thiol group with cellular lipids, proteins, intermediates or enzymes. Some of the mechanisms that have been proposed include a p53 mediated apoptosis, thiyl radical induced DNA damage, membrane damage through lipid peroxidation, anti-angiogenic effects induced by inhibition of matrix metalloproteinase enzymes and angiostatin generation. LMWTs are strong chelators of transition metals like copper, nickel, zinc, iron and cobalt and may cause metal co-factor depletion resulting in cytotoxicity. Oxidation of thiol group can also generate cytotoxic reactive oxygen species (ROS).
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147
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Buac D, Schmitt S, Ventro G, Kona FR, Dou QP. Dithiocarbamate-based coordination compounds as potent proteasome inhibitors in human cancer cells. Mini Rev Med Chem 2013; 12:1193-201. [PMID: 22931591 DOI: 10.2174/138955712802762040] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2011] [Revised: 02/02/2012] [Accepted: 02/06/2012] [Indexed: 01/01/2023]
Abstract
Dithiocarbamates are a class of metal-chelating compounds with various applications in medicine. They have been used for the treatment of bacterial and fungal infections, possible treatment of AIDS, and most recently cancer. Their anti-tumor effects can in part be attributed to their ability to complex tumor cellular copper, leading to binding to and inhibition of the proteasome and in turn initiating tumor cell-specific apoptosis. Current chemotherapeutic agents are highly toxic and therefore their efficacy in the eradication of tumors is greatly limited. As a result many scientists have joined the quest for novel targeted therapies in hopes of reducing toxicity while maximizing potency and proteasome inhibition has become an attractive therapy in this regard. Here we discuss the origins, mechanism, and evolution of dithiocarbamates as potent proteasome inhibitors and therefore anti-cancer agents.
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Affiliation(s)
- Daniela Buac
- Departments of Oncology, Pharmacology and Pathology, and Developmental Therapeutics Program, Barbara Ann Karmanos Cancer Institute, Wayne State University School of Medicine, 4100 John R Street Hudson Webber Cancer Research Center Room 516, Detroit, MI 48201, USA
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Pevzner Y, Metcalf R, Kantor M, Sagaro D, Daniel K. Recent advances in proteasome inhibitor discovery. Expert Opin Drug Discov 2013; 8:537-68. [DOI: 10.1517/17460441.2013.780020] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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149
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Costa AC, Ondar GF, Versiane O, Ramos JM, Santos TG, Martin AA, Raniero L, Bussi GGA, Téllez Soto CA. DFT: B3LYP/6-311G (d, p) vibrational analysis of bis-(diethyldithiocarbamate)zinc(II) and natural bond orbitals. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 105:251-258. [PMID: 23314390 DOI: 10.1016/j.saa.2012.11.097] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2012] [Revised: 11/21/2012] [Accepted: 11/27/2012] [Indexed: 06/01/2023]
Abstract
Theoretical and experimental bands have been assigned for the Fourier Transform Infrared (FT-IR) and Fourier Transform Raman (FT-Raman) spectra of the bis-(diethydithiocarbamate)Zn(II) complex, [Zn(DDTC)(2)]. The calculations and spectra interpretation have been based on the DFT/B3LYP method, infrared and Raman second derivative spectra as well as band deconvolution analysis. To assign the metal-ligand normal modes the deviation percentage of the geometrical parameters was used. Results confirms a pseudo tetrahedral structure around the Zn(II) cation. The calculated infrared and Raman spectra has an excellent agreement with the experimental spectra. The Natural Bond Orbital analysis (NBO) was carried out as a way to study the Zn(II) hybridization leading to the pseudo tetrahedral geometry of the framework of the [Zn(DDTC)(2)] complex, and to study also which are the donor NBO and the acceptor NBO in meaningful charge transfer through the Second Order Perturbation Theory Analysis of Fox Matrix in NBO basis.
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Affiliation(s)
- A C Costa
- Departamento de Química Inorgânica, Instituto de Química, Universidade Federal Fluminense (UFF), Morro do Valonguinho s/n, Niterói-Centro, CEP 24210-150, RJ, Brazil
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150
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Hothi P, Martins TJ, Chen L, Deleyrolle L, Yoon JG, Reynolds B, Foltz G. High-throughput chemical screens identify disulfiram as an inhibitor of human glioblastoma stem cells. Oncotarget 2013; 3:1124-36. [PMID: 23165409 PMCID: PMC3717950 DOI: 10.18632/oncotarget.707] [Citation(s) in RCA: 133] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Glioblastoma Multiforme (GBM) continues to have a poor patient prognosis despite optimal standard of care. Glioma stem cells (GSCs) have been implicated as the presumed cause of tumor recurrence and resistance to therapy. With this in mind, we screened a diverse chemical library of 2,000 compounds to identify therapeutic agents that inhibit GSC proliferation and therefore have the potential to extend patient survival. High-throughput screens (HTS) identified 78 compounds that repeatedly inhibited cellular proliferation, of which 47 are clinically approved for other indications and 31 are experimental drugs. Several compounds (such as digitoxin, deguelin, patulin and phenethyl caffeate) exhibited high cytotoxicity, with half maximal inhibitory concentrations (IC50) in the low nanomolar range. In particular, the FDA approved drug for the treatment of alcoholism, disulfiram (DSF), was significantly potent across multiple patient samples (IC50 of 31.1 nM). The activity of DSF was potentiated by copper (Cu), which markedly increased GSC death. DSF–Cu inhibited the chymotrypsin-like proteasomal activity in cultured GSCs, consistent with inactivation of the ubiquitin-proteasome pathway and the subsequent induction of tumor cell death. Given that DSF is a relatively non-toxic drug that can penetrate the blood-brain barrier, we suggest that DSF should be tested (as either a monotherapy or as an adjuvant) in pre-clinical models of human GBM. Data also support targeting of the ubiquitin-proteasome pathway as a therapeutic approach in the treatment of GBM.
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Affiliation(s)
- Parvinder Hothi
- The Ben and Catherine Ivy Center for Advanced Brain Tumor Treatment, Swedish Neuroscience Institute, Seattle, WA, USA
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