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Affiliation(s)
- Tomokazu MATSUE
- WPI-Advanced Institute for Materials Research (WPI-AIMR), Tohoku University
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Matsue T. Development of Biosensing Devices and Systems Using Micro/Nanoelectrodes. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2012. [DOI: 10.1246/bcsj.20110249] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Tomokazu Matsue
- Advanced Institute for Materials Research (WPI-AIMR), Tohoku University
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Yasukawa T, Hirano Y, Motochi N, Shiku H, Matsue T. Enzyme immunosensing of pepsinogens 1 and 2 by scanning electrochemical microscopy. Biosens Bioelectron 2007; 22:3099-104. [PMID: 17321125 DOI: 10.1016/j.bios.2007.01.015] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2006] [Revised: 12/22/2006] [Accepted: 01/23/2007] [Indexed: 11/24/2022]
Abstract
Scanning electrochemical microscopy (SECM) was applied to a dual enzyme immunoassay for the detection of pepsinogen 1 (PG1) and pepsinogen 2 (PG2). Sandwich-type immunocomplexes labeled with horseradish peroxidase (HRP) were constructed on microspots consisting of anti-PG1 IgG antibody and anti-PG2 IgG antibody. These microspots were fabricated on a hydrophobic glass substrate using a capillary microspotting technique. In the presence of H(2)O(2) and ferrocenemethanol (FcOH; used as an electron mediator), the labeled HRP catalyzed the oxidation of FcOH by H(2)O(2) to generate the oxidized form of FcOH (Fc(+)OH) at localized areas corresponding to microspots containing both immunocomplexes. The enzymatically generated Fc(+)OH was reduced and detected with a SECM probe (0.05 V versus Ag/AgCl), and the substrate surface was mapped to generate SECM images of the PG1 and PG2 spots. Relationships between the reduction current in the SECM images and the concentrations of PG1 and PG2 were obtained in the range 1.6-60.3 ng/ml protein. Dual imaging of PG1 and PG2 was achieved using microspots containing PG1 and PG2 immunocomplexes separated by a 200 microm physical barrier on the substrate. Pyramidal hole arrays with 100 microm x 100 microm openings on the silicon wafer were utilized to fabricate spots using antibodies on poly(dimethylsiloxane) (PDMS) membranes. Current responses obtained from microspots fabricated with pyramidal holes are significantly sharper compared to the responses obtained from spots fabricated using the capillary method.
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Affiliation(s)
- Tomoyuki Yasukawa
- Graduate School of Environmental Studies, Tohoku University, 6-6-11 Aoba, Aramaki, Aoba, Sendai 980-8579, Japan.
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Wittstock G, Burchardt M, Pust SE, Shen Y, Zhao C. Scanning electrochemical microscopy for direct imaging of reaction rates. Angew Chem Int Ed Engl 2007; 46:1584-617. [PMID: 17285666 DOI: 10.1002/anie.200602750] [Citation(s) in RCA: 313] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Not only in electrochemistry but also in biology and in membrane transport, localized processes at solid-liquid or liquid-liquid interfaces play an important role at defect sites, pores, or individual cells, but are difficult to characterize by integral investigation. Scanning electrochemical microscopy is suitable for such investigations. After two decades of development, this method is based on a solid theoretical foundation and a large number of demonstrated applications. It offers the possibility of directly imaging heterogeneous reaction rates and locally modifying substrates by electrochemically generated reagents. The applications range from classical electrochemical problems, such as the investigation of localized corrosion and electrocatalytic reactions in fuel cells, sensor surfaces, biochips, and microstructured analysis systems, to mass transport through synthetic membranes, skin and tissue, as well as intercellular communication processes. Moreover, processes can be studied that occur at liquid surfaces and liquid-liquid interfaces.
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Affiliation(s)
- Gunther Wittstock
- Carl von Ossietzky Universität Oldenburg, Institut für Reine und Angewandte Chemie und Institut für Chemie und Biologie des Meeres, 26111 Oldenburg, Germany.
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Wittstock G, Burchardt M, Pust S, Shen Y, Zhao C. Elektrochemische Rastermikroskopie zur direkten Abbildung von Reaktionsgeschwindigkeiten. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200602750] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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INOUE K, FERRANTE P, HIRANO Y, YASUKAWA T, SHIKU H, MATSUE T. Electrochemical ELISA of Testosterone Using Nitrocellulose Membrane as a Support for Antibodies. BUNSEKI KAGAKU 2007. [DOI: 10.2116/bunsekikagaku.56.471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Kumi INOUE
- Graduate School of Environmental Studies, Tohoku University
| | | | - Yu HIRANO
- Research Institute of Genome-based Biofactory, National Institute of Advanced Industrial Science and Technology (AIST)
| | | | - Hitoshi SHIKU
- Graduate School of Environmental Studies, Tohoku University
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Limoges B, Marchal D, Mavré F, Savéant JM. Electrochemistry of immobilized redox enzymes: kinetic characteristics of NADH oxidation catalysis at diaphorase monolayers affinity immobilized on electrodes. J Am Chem Soc 2006; 128:2084-92. [PMID: 16464111 DOI: 10.1021/ja0569196] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In the class of NADH:acceptor oxidoreductases, the diaphorase from Bacillus stearothermophilusis a particularly promising enzyme for sensing NADH, and indirectly a great number of analytes, when coupled with a NAD-dependent dehydrogenase as well as for the design of mono- and multienzyme affinity sensors. The design and rational optimization of such systems require devising immobilization procedures that prevent dramatic losses of the enzymatic activity and a full kinetic characterization of the immobilized enzyme system. Two immobilization procedures are described, which involve recognition of the biotinylated diaphorase by a monolayer of neutravidin adsorbed on the electrode surface either directly or through the intermediacy of a monolayer of biotinylated rabbit immunoglobulin. Thorough kinetic characterization of the two systems is derived from cyclic voltammetric responses. A precise estimate of the enzyme coverages is obtained after comparing the enzyme kinetics of the immobilized and the homogeneous system.
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Affiliation(s)
- Benoît Limoges
- Laboratoire d'Electrochimie Moléculaire, Université de Paris 7-Denis Diderot, 2 place Jussieu,75251 Paris Cedex 05, France.
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YASUKAWA T, HIRANO Y, OGASAWARA D, MOTOCHI N, SHIKU H, KAWABATA S, MATSUE T. Enzyme Immunosensing for C-Reactive Protein with Scanning Electrochemical Microscopy. BUNSEKI KAGAKU 2006. [DOI: 10.2116/bunsekikagaku.55.979] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
| | - Yu HIRANO
- National Institute of Advanced Industrial Science and Technology (AIST)
| | | | - Naomi MOTOCHI
- Graduate School of Environmental Studies, Tohoku Unibersity
| | - Hitoshi SHIKU
- Graduate School of Environmental Studies, Tohoku Unibersity
| | - Shohei KAWABATA
- I. T. Research Co., Ltd., The 21st Cenntury Plaza Research Center
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Yamada H, Fukumoto H, Yokoyama T, Koike T. Immobilized Diaphorase Surfaces Observed by Scanning Electrochemical Microscope with Shear Force Based Tip−Substrate Positioning. Anal Chem 2005; 77:1785-90. [PMID: 15762586 DOI: 10.1021/ac048582g] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Imaging of a coimmobilized diaphorase and albumin surface was investigated by scanning electrochemical microscopy (SECM) with shear force based tip-substrate distance control. A microelectrode tip was attached to a commercially available tuning fork to detect the shear force between the microelectrode tip and the surface. We used the standing approach mode, which repeats an approach and retraction at each data point of the surface to obtain simultaneous current and topographic images. To check the performance of our SECM system, we imaged a platinum-patterned array electrode and a diaphorase/albumin coimmobilized glass surface. Since the system acquires current when the tip is retracted to a desired distance, this mode is useful for a relatively large microelectrode (approximately 10 microm) and for scanning a large area (few hundreds of micrometers). Furthermore, by retracting the tip when the tip moves laterally to the next data point to avoid contact between the tip and sample surface, we successfully imaged the surface without destroying its morphology.
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Affiliation(s)
- Hiroshi Yamada
- Department of Applied Chemistry, National Defense Academy, 1-10-20 Hashirimizu, Yokosuka, Kanagawa 239-8686, Japan.
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Zhou H, Kasai S, Noda H, Ohya-Nishiguchi H, Shiku H, Matsue T. Characterization of the Peroxidase Activity of Single Algae Protoplasts by Scanning Electrochemical Microscopy. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2003. [DOI: 10.1246/bcsj.76.1757] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Zhou H, Kasai S, Matsue T. Imaging localized horseradish peroxidase on a glass surface with scanning electrochemical/ chemiluminescence microscopy. Anal Biochem 2001; 290:83-8. [PMID: 11180940 DOI: 10.1006/abio.2000.4941] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Scanning electrochemical/chemiluminescence microscopy (SECM/SCLM) was developed for simultaneous imaging of chemiluminescence and topography of immobilized horseradish peroxidase (HRP) on a glass substrate. When the SECM tip for electrochemical generation of H2O2 scanned over the immobilized spot in an aqueous luminol solution, the immobilized enzymes catalyzed the oxidation of luminol to emit chemiluminescence, which was detected by a photon counter. The photon-counting intensity was plotted against the position of the tip to give a two-dimensional image, indicating the activity of immobilized enzymes. Since the current was sensitive to the topography of substrate, the topography image was also obtained by mapping the oxygen reduction current.
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Affiliation(s)
- H Zhou
- Center for Interdisciplinary Research, Tohoku University, Sendai, 980-8578, Japan
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Yasukawa T, Uchida I, Matsue T. Permeation of redox species through a cell membrane of a single, living algal protoplast studied by microamperometry. BIOCHIMICA ET BIOPHYSICA ACTA 1998; 1369:152-8. [PMID: 9528683 DOI: 10.1016/s0005-2736(97)00220-4] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Permeation of several redox species through a cell membrane of a single algal protoplast (radius 100 microns) was investigated by amperometry with a Pt microdisk electrode (disk radius, 6.5 microns) located near the membrane. The redox current observed at the microelectrode decreased as the microelectrode approached the cell membrane since the membrane acted as a barrier for diffusion of redox species from bulk to the microelectrode. Permeability coefficient (Pm) of the protoplast membrane was determined by the quantitative analysis of the variation of the redox current with microelectrode-membrane distance using digital simulation. The Pm values for Fe(CN)6(4-), Fe(CN)6(3-), Co(phen)3(2+), ferrocenyl methanol(FMA) and p-hydroquinone(QH2) were < or = 1.0 x 10(-4), < or = 1.0 x 10(-4), 1.0 x 10(-3), 5.0 x 10(-3) and 2.0 x 10(-2) cm/s, respectively. Using these Pm values, the concentration changes inside a model cell and chloroplast were theoretically calculated.
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Affiliation(s)
- T Yasukawa
- Department of Applied Chemistry, Graduate School of Engineering, Tohoku University, Sendai, Japan
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Dual immunoassay of human chorionic gonadotropin and human placental lactogen at a miocrofabricated substrate by scanning electrochemical microscopy. J Electroanal Chem (Lausanne) 1997. [DOI: 10.1016/s0022-0728(96)04979-0] [Citation(s) in RCA: 64] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Shiku H, Matsue T, Uchida I. Detection of Microspotted Carcinoembryonic Antigen on a Glass Substrate by Scanning Electrochemical Microscopy. Anal Chem 1996; 68:1276-8. [DOI: 10.1021/ac950824c] [Citation(s) in RCA: 103] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hitoshi Shiku
- Department of Applied Chemistry, Graduate School of Engineering, Tohoku University, Sendai 980-77, Japan
| | - Tomokazu Matsue
- Department of Applied Chemistry, Graduate School of Engineering, Tohoku University, Sendai 980-77, Japan
| | - Isamu Uchida
- Department of Applied Chemistry, Graduate School of Engineering, Tohoku University, Sendai 980-77, Japan
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