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Zhao Y, Chu X, Yang B. Electrochemical behavior of hemin binding with human centrin 3. Bioelectrochemistry 2017; 117:15-22. [DOI: 10.1016/j.bioelechem.2017.04.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Revised: 04/25/2017] [Accepted: 04/26/2017] [Indexed: 01/30/2023]
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Al-Eisawi Z, Stefani C, Jansson PJ, Arvind A, Sharpe PC, Basha MT, Iskander GM, Kumar N, Kovacevic Z, Lane DJR, Sahni S, Bernhardt PV, Richardson DR, Kalinowski DS. Novel Mechanism of Cytotoxicity for the Selective Selenosemicarbazone, 2-Acetylpyridine 4,4-Dimethyl-3-selenosemicarbazone (Ap44mSe): Lysosomal Membrane Permeabilization. J Med Chem 2016; 59:294-312. [PMID: 26645570 DOI: 10.1021/acs.jmedchem.5b01399] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Selenosemicarbazones show marked antitumor activity. However, their mechanism of action remains unknown. We examined the medicinal chemistry of the selenosemicarbazone, 2-acetylpyridine 4,4-dimethyl-3-selenosemicarbazone (Ap44mSe), and its iron and copper complexes to elucidate its mechanisms of action. Ap44mSe demonstrated a pronounced improvement in selectivity toward neoplastic relative to normal cells compared to its parent thiosemicarbazone. It also effectively depleted cellular Fe, resulting in transferrin receptor-1 up-regulation, ferritin down-regulation, and increased expression of the potent metastasis suppressor, N-myc downstream regulated gene-1. Significantly, Ap44mSe limited deleterious methemoglobin formation, highlighting its usefulness in overcoming toxicities of clinically relevant thiosemicarbazones. Furthermore, Cu-Ap44mSe mediated intracellular reactive oxygen species generation, which was attenuated by the antioxidant, N-acetyl-L-cysteine, or Cu sequestration. Notably, Ap44mSe forms redox active Cu complexes that target the lysosome to induce lysosomal membrane permeabilization. This investigation highlights novel structure-activity relationships for future chemotherapeutic design and underlines the potential of Ap44mSe as a selective anticancer/antimetastatic agent.
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Affiliation(s)
- Zaynab Al-Eisawi
- Molecular Pharmacology and Pathology Program, Department of Pathology and Bosch Institute, The University of Sydney , Sydney, Level 5, Blackburn Building (D06)New South Wales 2006, Australia
| | - Christian Stefani
- Molecular Pharmacology and Pathology Program, Department of Pathology and Bosch Institute, The University of Sydney , Sydney, Level 5, Blackburn Building (D06)New South Wales 2006, Australia
| | - Patric J Jansson
- Molecular Pharmacology and Pathology Program, Department of Pathology and Bosch Institute, The University of Sydney , Sydney, Level 5, Blackburn Building (D06)New South Wales 2006, Australia
| | - Akanksha Arvind
- Molecular Pharmacology and Pathology Program, Department of Pathology and Bosch Institute, The University of Sydney , Sydney, Level 5, Blackburn Building (D06)New South Wales 2006, Australia
| | - Philip C Sharpe
- School of Chemistry and Molecular Biosciences, University of Queensland , Brisbane, Queensland 4072, Australia
| | - Maram T Basha
- School of Chemistry and Molecular Biosciences, University of Queensland , Brisbane, Queensland 4072, Australia
| | - George M Iskander
- School of Chemistry, University of New South Wales , Sydney, New South Wales 2052, Australia
| | - Naresh Kumar
- School of Chemistry, University of New South Wales , Sydney, New South Wales 2052, Australia
| | - Zaklina Kovacevic
- Molecular Pharmacology and Pathology Program, Department of Pathology and Bosch Institute, The University of Sydney , Sydney, Level 5, Blackburn Building (D06)New South Wales 2006, Australia
| | - Darius J R Lane
- Molecular Pharmacology and Pathology Program, Department of Pathology and Bosch Institute, The University of Sydney , Sydney, Level 5, Blackburn Building (D06)New South Wales 2006, Australia
| | - Sumit Sahni
- Molecular Pharmacology and Pathology Program, Department of Pathology and Bosch Institute, The University of Sydney , Sydney, Level 5, Blackburn Building (D06)New South Wales 2006, Australia
| | - Paul V Bernhardt
- School of Chemistry and Molecular Biosciences, University of Queensland , Brisbane, Queensland 4072, Australia
| | - Des R Richardson
- Molecular Pharmacology and Pathology Program, Department of Pathology and Bosch Institute, The University of Sydney , Sydney, Level 5, Blackburn Building (D06)New South Wales 2006, Australia
| | - Danuta S Kalinowski
- Molecular Pharmacology and Pathology Program, Department of Pathology and Bosch Institute, The University of Sydney , Sydney, Level 5, Blackburn Building (D06)New South Wales 2006, Australia
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Dutta G, Park S, Singh A, Seo J, Kim S, Yang H. Low-Interference Washing-Free Electrochemical Immunosensor Using Glycerol-3-phosphate Dehydrogenase as an Enzyme Label. Anal Chem 2015; 87:3574-8. [DOI: 10.1021/ac504485a] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Gorachand Dutta
- Department
of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 609-735, Korea
| | - Seonhwa Park
- Department
of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 609-735, Korea
| | - Amardeep Singh
- Department
of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 609-735, Korea
| | - Jeongwook Seo
- Department
of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 609-735, Korea
| | - Sinyoung Kim
- Department
of Laboratory Medicine, Yonsei University College of Medicine, Seoul 135-720, Korea
| | - Haesik Yang
- Department
of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 609-735, Korea
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Brinkevich SD. Effect of ascorbic acid and its derivatives on the radiation-induced transformations of oxygenated ethanol and its aqueous solutions. HIGH ENERGY CHEMISTRY 2015. [DOI: 10.1134/s0018143915020034] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Shen X, Zhang G, Zhang D. A New Fluorometric Turn-On Detection of l-Lactic Acid Based on the Cascade Enzymatic and Chemical Reactions and the Abnormal Fluorescent Behavior of Silole. Org Lett 2012; 14:1744-7. [DOI: 10.1021/ol300344q] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xiang Shen
- Organic Solids Laboratory, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Guanxin Zhang
- Organic Solids Laboratory, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Deqing Zhang
- Organic Solids Laboratory, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
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References. Anal Chem 2012. [DOI: 10.1201/b11478-14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Pereira AC, Kisner A, Tarley CRT, Kubota LT. Development of a Carbon Paste Electrode for Lactate Detection Based on Meldola’s Blue Adsorbed on Silica Gel Modified with Niobium Oxide and Lactate Oxidase. ELECTROANAL 2011. [DOI: 10.1002/elan.201000709] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Przybyt M, Iciek J, Papiewska A, Biernasiak J. Application of biosensors in early detection of contamination with lactic acid bacteria during apple juice and concentrate production. J FOOD ENG 2010. [DOI: 10.1016/j.jfoodeng.2010.02.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Richardson DR, Kalinowski DS, Richardson V, Sharpe PC, Lovejoy DB, Islam M, Bernhardt PV. 2-Acetylpyridine thiosemicarbazones are potent iron chelators and antiproliferative agents: redox activity, iron complexation and characterization of their antitumor activity. J Med Chem 2010; 52:1459-70. [PMID: 19216562 DOI: 10.1021/jm801585u] [Citation(s) in RCA: 168] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Through systematic structure-activity studies of the 2-benzoylpyridine thiosemicarbazone (HBpT), 2-(3-nitrobenzoyl)pyridine thiosemicarbazone (HNBpT) and dipyridylketone thiosemicarbazone (HDpT) series of iron (Fe) chelators, we identified structural features necessary to form Fe complexes with potent anticancer activity (J. Med. Chem. 2007, 50, 3716-3729). In this investigation, we generated the related 2-acetylpyridine thiosemicarbazone (HApT) analogues to examine the influence of the methyl group at the imine carbon. Four of the six HApT chelators had potent antitumor activity (IC(50): 0.001-0.002 microM) and Fe chelation efficacy that was similar to the most effective HBpT and HDpT ligands. The HApT Fe complexes had the lowest Fe(III/II) redox potentials of any thiosemicarbazone series we have generated. This property, in combination with their ability to effectively chelate cellular Fe, make the HApT series one of the most potent antiproliferative agents developed by our group.
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Affiliation(s)
- Des R Richardson
- Department of Pathology, University of Sydney, Sydney, New South Wales, Australia.
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Han X, Zhu Y, Yang X, Luan S. In SituPolymerization of Pyrrole in Mesoporous Silica and Application to Electrode Modification. INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION 2010. [DOI: 10.1080/10236661003669458] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Parra A, Casero E, Vázquez L, Jin J, Pariente F, Lorenzo E. Microscopic and voltammetric characterization of bioanalytical platforms based on lactate oxidase. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2006; 22:5443-50. [PMID: 16732675 DOI: 10.1021/la060184g] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
A microscopic and voltammetric characterization of lactate oxidase- (LOx-) based bioanalytical platforms for biosensor applications is presented. In this context, emphasis is placed on amperometric biosensors based on LOx that have been immobilized by direct absorption on carbon surfaces, in particular, glassy carbon (GC) and highly ordered pyrolytic graphite (HOPG). The immobilized LOx layers have been characterized using atomic force microscopy (AFM) under liquid conditions and cyclic voltammetry. In addition, spatially resolved mapping of enzymatic activity has been carried out using scanning electrochemical microscopy (SECM). In the presence of lactate with hydroxymethylferrocene (HMF) as a redox mediator in solution, biosensors obtained by direct adsorption of LOx onto GC electrodes exhibited a clear electrocatalytic activity, and lactate could be determined amperometrically at 300 mV versus SSCE. The proposed biosensor also exhibits good operating performance in terms of linearity, detection limit, and lifetime.
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Affiliation(s)
- A Parra
- Departamento de Química Analítica y Análisis Instrumental, Universidad Autónoma de Madrid, Campus de Cantoblanco, 28049 Madrid, Spain
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Ghamouss F, Ledru S, Ruillé N, Lantier F, Boujtita M. Bulk-modified modified screen-printing carbon electrodes with both lactate oxidase (LOD) and horseradish peroxide (HRP) for the determination of l-lactate in flow injection analysis mode. Anal Chim Acta 2006; 570:158-64. [PMID: 17723394 DOI: 10.1016/j.aca.2006.04.022] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2005] [Revised: 04/01/2006] [Accepted: 04/07/2006] [Indexed: 11/15/2022]
Abstract
A screen-printed carbon electrode modified with both HRP and LOD (SPCE-HRP/LOD) has been developed for the determination of L-lactate concentration in real samples. The resulting SPCE-HRP/LOD was prepared in a one-step procedure, and was then optimised as an amperometric biosensor operating at [0, -100]mV versus Ag/AgCl for L-lactate determination in flow injection mode. A significant improvement in the reproducibility (coefficient variation of about 10%) of the preparation of the biosensors was obtained when graphite powder was modified with LOD in the presence of HRP previously oxidised by periodate ion (IO4-). Optimisation studies were performed by examining the effects of LOD loading, periodation step and rate of the binder on analytical performances of SPCE-HRP/LOD. The sensitivity of the optimised SPCE-HRP/LOD to L-lactate was 0.84 nAL micromol(-1) in a detection range between 10 and 180 microMol. The possibility of using the developed biosensor to determine L-lactate concentrations in various dairy products was also evaluated.
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Affiliation(s)
- Fouad Ghamouss
- Groupe Méthodologie Electrochimique, LAIEM, UMR/CNRS 6006, FCMN, FR/CNRS 2465, Université de Nantes, Faculté des Sciences et des Techniques, 2, rue de la Houssinière, B.P. 92208, 44322 Nantes Cedex 03, France
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Ledru S, Ruillé N, Boujtita M. One-step screen-printed electrode modified in its bulk with HRP based on direct electron transfer for hydrogen peroxide detection in flow injection mode. Biosens Bioelectron 2006; 21:1591-8. [PMID: 16157480 DOI: 10.1016/j.bios.2005.07.020] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2005] [Revised: 07/18/2005] [Accepted: 07/22/2005] [Indexed: 11/23/2022]
Abstract
The preparation and performances of screen-printed carbon electrodes modified in their bulk with HRP (HRP-SPCE) is reported. The resulting modified HRP-SPCE was prepared in a one-step procedure, and then was optimised as an amperometric biosensor operating at [0-100] mV versus Ag/AgCl in flow injection mode for hydrogen peroxide. The amperometric response was due to direct electron transfer (DET) between HRP and SPCE surface. Factors such as chemical modification of the enzyme or the nature and rate of the binder were investigated regards to their influence on the sensitivity, linear range and operational stability. The best performing HRP-SPCE in terms of sensitivity and operational stability was obtained when graphite powder was modified with HRP previously oxidised by periodate ion (IO(4)(-)).
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Affiliation(s)
- Sophie Ledru
- Groupe Méthodologie Electrochimique-LAIEM, UMR-CNRS 6006-FCMN, FR-CNRS 2465-Faculté des Sciences et des Techniques 2, Nantes, France
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Parra A, Casero E, Vázquez L, Pariente F, Lorenzo E. Design and characterization of a lactate biosensor based on immobilized lactate oxidase onto gold surfaces. Anal Chim Acta 2006. [DOI: 10.1016/j.aca.2005.09.025] [Citation(s) in RCA: 94] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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