1
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Pozza MD, Mesdom P, Abdullrahman A, Prieto Otoya TD, Arnoux P, Frochot C, Niogret G, Saubaméa B, Burckel P, Hall JP, Hollenstein M, Cardin CJ, Gasser G. Increasing the π-Expansive Ligands in Ruthenium(II) Polypyridyl Complexes: Synthesis, Characterization, and Biological Evaluation for Photodynamic Therapy Applications. Inorg Chem 2023; 62:18510-18523. [PMID: 37913550 DOI: 10.1021/acs.inorgchem.3c02606] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2023]
Abstract
Lack of selectivity is one of the main issues with currently used chemotherapies, causing damage not only to altered cells but also to healthy cells. Over the last decades, photodynamic therapy (PDT) has increased as a promising therapeutic tool due to its potential to treat diseases like cancer or bacterial infections with a high spatiotemporal control. Ruthenium(II) polypyridyl compounds are gaining attention for their application as photosensitizers (PSs) since they are generally nontoxic in dark conditions, while they show remarkable toxicity after light irradiation. In this work, four Ru(II) polypyridyl compounds with sterically expansive ligands were studied as PDT agents. The Ru(II) complexes were synthesized using an alternative route to those described in the literature, which resulted in an improvement of the synthesis yields. Solid-state structures of compounds [Ru(DIP)2phen]Cl2 and [Ru(dppz)2phen](PF6)2 have also been obtained. It is well-known that compound [Ru(dppz)(phen)2]Cl2 binds to DNA by intercalation. Therefore, we used [Ru(dppz)2phen]Cl2 as a model for DNA interaction studies, showing that it stabilized two different sequences of duplex DNA. Most of the synthesized Ru(II) derivatives showed very promising singlet oxygen quantum yields, together with noteworthy photocytotoxic properties against two different cancer cell lines, with IC50 in the micro- or even nanomolar range (0.06-7 μM). Confocal microscopy studies showed that [Ru(DIP)2phen]Cl2 and [Ru(DIP)2TAP]Cl2 accumulate preferentially in mitochondria, while no mitochondrial internalization was observed for the other compounds. Although [Ru(dppn)2phen](PF6)2 did not accumulate in mitochondria, it interestingly triggered an impairment in mitochondrial respiration after light irradiation. Among others, [Ru(dppn)2phen](PF6)2 stands out for its very good IC50 values, correlated with a very high singlet oxygen quantum yield and mitochondrial respiration disruption.
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Affiliation(s)
- Maria Dalla Pozza
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health, Paris 75005, France
| | - Pierre Mesdom
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health, Paris 75005, France
| | - Ahmad Abdullrahman
- Department of Pharmacy, Chemistry and Pharmacy Building, University of Reading, Whiteknights Campus, Reading, Berkshire RG6 6AD, U.K
| | | | | | - Céline Frochot
- Université de Lorraine, CNRS, LRGP, Nancy F-54000, France
| | - Germain Niogret
- Institut Pasteur, Université Paris Cité, CNRS UMR3523, Departement of Structural Biology and Chemistry, Laboratory for Bioorganic Chemistry of Nucleic Acids, Paris 75015, France
| | - Bruno Saubaméa
- Université Paris Cité, INSERM, CNRS, P-MIM, Plateforme d'Imagerie Cellulaire et Moléculaire (PICMO), Paris F-75006, France
| | - Pierre Burckel
- Université de Paris, Institut de physique du globe de Paris, CNRS, Paris F-75005, France
| | - James P Hall
- Department of Pharmacy, Chemistry and Pharmacy Building, University of Reading, Whiteknights Campus, Reading, Berkshire RG6 6AD, U.K
| | - Marcel Hollenstein
- Institut Pasteur, Université Paris Cité, CNRS UMR3523, Departement of Structural Biology and Chemistry, Laboratory for Bioorganic Chemistry of Nucleic Acids, Paris 75015, France
| | - Christine J Cardin
- Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, U.K
| | - Gilles Gasser
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health, Paris 75005, France
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2
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Catalytic performance of nickel(II) complexes bearing 1,10-phenanthroline based ligands in homogeneous ethylene oligomerization. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.115978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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3
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Electrochemical Sensors Based on the Electropolymerized Natural Phenolic Antioxidants and Their Analytical Application. SENSORS 2021; 21:s21248385. [PMID: 34960482 PMCID: PMC8707084 DOI: 10.3390/s21248385] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 12/08/2021] [Accepted: 12/12/2021] [Indexed: 11/17/2022]
Abstract
The design and fabrication of novel electrochemical sensors with high analytical and operational characteristics are one of the sustainable trends in modern analytical chemistry. Polymeric film formation by the electropolymerization of suitable monomers is one of the methods of sensors fabrication. Among a wide range of the substances able to polymerize, the phenolic ones are of theoretical and practical interest. The attention is focused on the sensors based on the electropolymerized natural phenolic antioxidants and their analytical application. The typical electropolymerization reaction schemes are discussed. Phenol electropolymerization leads to insulating coverage formation. Therefore, a combination of electropolymerized natural phenolic antioxidants and carbon nanomaterials as modifiers is of special interest. Carbon nanomaterials provide conductivity and a high working surface area of the electrode, while the polymeric film properties affect the selectivity and sensitivity of the sensor response for the target analyte or the group of structurally related compounds. The possibility of guided changes in the electrochemical response for the improvement of target compounds' analytical characteristics has appeared. The analytical capabilities of sensors based on electropolymerized natural phenolic antioxidants and their future development in this field are discussed.
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Yates MD, Bird LJ, Eddie BJ, Onderko EL, Voigt CA, Glaven SM. Nanoliter scale electrochemistry of natural and engineered electroactive bacteria. Bioelectrochemistry 2020; 137:107644. [PMID: 32971484 DOI: 10.1016/j.bioelechem.2020.107644] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 08/21/2020] [Accepted: 08/26/2020] [Indexed: 01/09/2023]
Abstract
Bacterial extracellular electron transfer (EET) is envisioned for use in applied biotechnologies, necessitating electrochemical characterization of natural and engineered electroactive biofilms under conditions similar to the target application, including small-scale biosensing or biosynthesis platforms, which is often distinct from standard 100 mL-scale stirred-batch bioelectrochemical test platforms used in the laboratory. Here, we adapted an eight chamber, nanoliter volume (500 nL) electrochemical flow cell to grow biofilms of both natural (Biocathode MCL community, Marinobacter atlanticus, and Shewanella oneidensis MR1) or genetically modified (S. oneidensis ΔMtr and S. oneidensis ΔMtr + pLB2) electroactive bacteria on electrodes held at a constant potential. Maximum current density achieved by unmodified strains was similar between the nano- and milliliter-scale reactors. However, S. oneidensis biofilms engineered to activate EET upon exposure to 2,4-diacetylphloroglucinol (DAPG) produced current at wild-type levels in the stirred-batch reactor, but not in the nanoliter flow cell. We hypothesize this was due to differences in mass transport of DAPG, naturally-produced soluble redox mediators, and oxygen between the two reactor types. Results presented here demonstrate, for the first time, nanoliter scale chronoamperometry and cyclic voltammetry of a range of electroactive bacteria in a three-electrode reactor system towards development of miniaturized, and potentially high throughput, bioelectrochemical platforms.
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Affiliation(s)
- Matthew D Yates
- Center for Bio/Molecular Science and Engineering, Naval Research Laboratory, Washington, DC, USA.
| | - Lina J Bird
- Center for Bio/Molecular Science and Engineering, Naval Research Laboratory, Washington, DC, USA
| | - Brian J Eddie
- Center for Bio/Molecular Science and Engineering, Naval Research Laboratory, Washington, DC, USA
| | | | - Christopher A Voigt
- Department of Biological Engineering and the Synthetic Biology Center, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Sarah M Glaven
- Center for Bio/Molecular Science and Engineering, Naval Research Laboratory, Washington, DC, USA.
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5
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Goto H, Kanai Y, Yotsui A, Shimokihara S, Shitara S, Oyobiki R, Fujiwara K, Watanabe T, Einaga Y, Matsumoto Y, Miki N, Doi N. Microfluidic screening system based on boron-doped diamond electrodes and dielectrophoretic sorting for directed evolution of NAD(P)-dependent oxidoreductases. LAB ON A CHIP 2020; 20:852-861. [PMID: 31984406 DOI: 10.1039/c9lc01263j] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We report the development of a micro total analysis system (μTAS) based on electrochemical measurements and dielectrophoretic sorting for screening of NAD(P)-dependent oxidoreductases. In this system, the activity of enzymes immobilized on microbeads, together with their encoding DNA, can be measured with a boron-doped diamond (BDD) electrode in each compartment (∼30 nL) of the microfluidic system. The 30 nL droplets containing microbead-displayed genes of enzymes with higher activity can then be recovered by dielectrophoretic sorting. Previously, we developed the NAD(P)H-measuring device containing the BDD electrode for high-throughput measurement of the activity of NAD(P)-dependent oxidoreductases. In this study, we fabricated an encapsulating device and a droplet-sorting device for nanoliter-size droplets, for the first time, and then combined these three devices to construct a μTAS for directed evolution of NAD(P)-dependent oxidoreductases. We confirmed that this system works by proof-of-principle experiments and successfully applied this system for screening of randomized libraries of NAD-dependent dehydrogenases.
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Affiliation(s)
- Haruna Goto
- Department of Biosciences and Informatics, Keio University, Yokohama 223-8522, Japan.
| | - Yuki Kanai
- Department of Biosciences and Informatics, Keio University, Yokohama 223-8522, Japan.
| | - Arisa Yotsui
- Department of Biosciences and Informatics, Keio University, Yokohama 223-8522, Japan.
| | - Shota Shimokihara
- Department of Biosciences and Informatics, Keio University, Yokohama 223-8522, Japan.
| | - Shunya Shitara
- Department of Biosciences and Informatics, Keio University, Yokohama 223-8522, Japan.
| | - Ryo Oyobiki
- Department of Biosciences and Informatics, Keio University, Yokohama 223-8522, Japan.
| | - Kei Fujiwara
- Department of Biosciences and Informatics, Keio University, Yokohama 223-8522, Japan.
| | - Takeshi Watanabe
- Department of Electrical Engineering and Electronics, Aoyama Gakuin University, Sagamihara 252-5258, Japan
| | - Yasuaki Einaga
- Department of Chemistry, Keio University, Yokohama 223-8522, Japan
| | - Yoshinori Matsumoto
- Department of Applied Physics and Physico-Informatics, Keio University, Yokohama 223-8522, Japan
| | - Norihisa Miki
- Department of Mechanical Engineering, Keio University, Yokohama 223-8522, Japan
| | - Nobuhide Doi
- Department of Biosciences and Informatics, Keio University, Yokohama 223-8522, Japan.
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6
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Koçak İ, Alıcı H. Experimental and theoretical studies of electrochemical oxidation of nicotinamide adenine dinucleotide at the modified SWCNT and graphene oxide. J Mol Model 2020; 26:51. [PMID: 32034532 DOI: 10.1007/s00894-020-4314-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Accepted: 01/28/2020] [Indexed: 11/30/2022]
Abstract
In recent years, nicotinamide adenine dinucleotide (NADH) and its oxidized form (NAD+) have withdrawn a substantial attention since they possess a significant place in both biosensor and biofuel cell studies. However, the transformation of NADH to NAD+ brings about the surface passivation and fouling at the most of corresponding conductive materials; consequently, significant decrease takes place in the current. In order to overcome these drawbacks, we have performed the surface functionalization of single-walled carbon nanotube (SWCNT) and graphene oxide (GO) immobilized onto glassy carbon surface with dihydroxybenzene (di-HB) using solid-phase synthesis methodology. The di-HB-modified SWCNT and GO were found to exhibit great catalytic activity as they reduce required overpotential of electrochemical oxidation of NADH and lead to enhancement in the peak current, compared with unmodified carbon electrodes. Molecular docking simulation technique was also carried out to enlighten attained experimental findings in detail, and we have found that increase in the binding affinity of NAD+ to functionalized carbon surfaces with di-HB is related to formation of hydrogen bonding interactions Furthermore, our experimental and theoretical outputs were also found to be quite consistent in terms of reactivity of modified surfaces to NADH oxidation.
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Affiliation(s)
- İzzet Koçak
- Faculty of Pharmacy, Zonguldak Bülent Ecevit University, Zonguldak, Turkey.
| | - Hakan Alıcı
- Department of Physics, Faculty of Science and Art, Zonguldak Bülent Ecevit University, Zonguldak, Turkey
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7
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Engineering glucose oxidase for bioelectrochemical applications. Bioelectrochemistry 2019; 128:218-240. [DOI: 10.1016/j.bioelechem.2019.04.015] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 04/16/2019] [Accepted: 04/16/2019] [Indexed: 01/18/2023]
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8
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Zhang L, Cui H, Zou Z, Garakani TM, Novoa-Henriquez C, Jooyeh B, Schwaneberg U. Directed Evolution of a Bacterial Laccase (CueO) for Enzymatic Biofuel Cells. Angew Chem Int Ed Engl 2019; 58:4562-4565. [PMID: 30689276 DOI: 10.1002/anie.201814069] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 01/25/2019] [Indexed: 11/10/2022]
Abstract
Escherichia coli's copper efflux oxidase (CueO) has rarely been employed in the cathodic compartment of enzymatic biofuel cells (EBFCs) due to its low redox potential (0.36 V vs. Ag/AgCl, pH 5.5) towards O2 reduction. Herein, directed evolution of CueO towards a more positive onset potential was performed in an electrochemical screening system. An improved CueO variant (D439T/L502K) was obtained with a significantly increased onset potential (0.54 V), comparable to that of high-redox-potential fungal laccases. Upon coupling with an anodic compartment, the EBFC exhibited an open-circuit voltage (Voc ) of 0.56 V. Directed enzyme evolution by tailoring enzymes to application conditions in EBFCs has been validated and might, in combination with molecular understanding, enable future breakthroughs in EBFC performance.
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Affiliation(s)
- Lingling Zhang
- Institute of Biotechnology, RWTH Aachen University, Worringer Weg 3, 52074, Aachen, Germany
| | - Haiyang Cui
- Institute of Biotechnology, RWTH Aachen University, Worringer Weg 3, 52074, Aachen, Germany
| | - Zhi Zou
- Institute of Biotechnology, RWTH Aachen University, Worringer Weg 3, 52074, Aachen, Germany.,DWI Leibniz-Institute for Interactive Materials, Forckenbeckstrasse 50, 52074, Aachen, Germany
| | | | - Catalina Novoa-Henriquez
- Institute of Biotechnology, RWTH Aachen University, Worringer Weg 3, 52074, Aachen, Germany.,DWI Leibniz-Institute for Interactive Materials, Forckenbeckstrasse 50, 52074, Aachen, Germany
| | - Bahareh Jooyeh
- Institute of Biotechnology, RWTH Aachen University, Worringer Weg 3, 52074, Aachen, Germany
| | - Ulrich Schwaneberg
- Institute of Biotechnology, RWTH Aachen University, Worringer Weg 3, 52074, Aachen, Germany.,DWI Leibniz-Institute for Interactive Materials, Forckenbeckstrasse 50, 52074, Aachen, Germany
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9
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Zhang L, Cui H, Zou Z, Garakani TM, Novoa‐Henriquez C, Jooyeh B, Schwaneberg U. Directed Evolution of a Bacterial Laccase (CueO) for Enzymatic Biofuel Cells. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201814069] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Lingling Zhang
- Institute of Biotechnology RWTH Aachen University Worringer Weg 3 52074 Aachen Germany
| | - Haiyang Cui
- Institute of Biotechnology RWTH Aachen University Worringer Weg 3 52074 Aachen Germany
| | - Zhi Zou
- Institute of Biotechnology RWTH Aachen University Worringer Weg 3 52074 Aachen Germany
- DWI Leibniz-Institute for Interactive Materials Forckenbeckstrasse 50 52074 Aachen Germany
| | | | - Catalina Novoa‐Henriquez
- Institute of Biotechnology RWTH Aachen University Worringer Weg 3 52074 Aachen Germany
- DWI Leibniz-Institute for Interactive Materials Forckenbeckstrasse 50 52074 Aachen Germany
| | - Bahareh Jooyeh
- Institute of Biotechnology RWTH Aachen University Worringer Weg 3 52074 Aachen Germany
| | - Ulrich Schwaneberg
- Institute of Biotechnology RWTH Aachen University Worringer Weg 3 52074 Aachen Germany
- DWI Leibniz-Institute for Interactive Materials Forckenbeckstrasse 50 52074 Aachen Germany
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10
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da Silva LV, de Almeida AK, Xavier JA, Lopes CB, Silva FDADS, Lima PR, dos Santos ND, Kubota LT, Goulart MO. Phenol based redox mediators in electroanalysis. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2018.05.027] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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11
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Al-Lolage FA, Meneghello M, Ma S, Ludwig R, Bartlett PN. A Flexible Method for the Stable, Covalent Immobilization of Enzymes at Electrode Surfaces. ChemElectroChem 2017. [DOI: 10.1002/celc.201700135] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Firas A. Al-Lolage
- Chemistry, Faculty of Natural and Environmental Sciences; University of Southampton; Southampton SO17 1BJ UK
- Department of Chemistry, Faculty of Science; University of Mosul; Mosul Iraq
| | - Marta Meneghello
- Chemistry, Faculty of Natural and Environmental Sciences; University of Southampton; Southampton SO17 1BJ UK
| | - Su Ma
- Department of Food Science and Technology, BOKU; University of Natural Resources and Life Sciences; Muthgasse 18 Vienna A-1190 Austria
| | - Roland Ludwig
- Department of Food Science and Technology, BOKU; University of Natural Resources and Life Sciences; Muthgasse 18 Vienna A-1190 Austria
| | - Philip N. Bartlett
- Chemistry, Faculty of Natural and Environmental Sciences; University of Southampton; Southampton SO17 1BJ UK
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12
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Stines-Chaumeil C, Roussarie E, Mano N. The nature of the rate-limiting step of blue multicopper oxidases: Homogeneous studies versus heterogeneous. BIOCHIMIE OPEN 2017; 4:36-40. [PMID: 29450139 PMCID: PMC5801829 DOI: 10.1016/j.biopen.2017.01.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Accepted: 01/21/2017] [Indexed: 11/15/2022]
Abstract
Multicopper oxidases (MCOs) catalyzed two half reactions (linked by an intramolecular electron transfer) through a Ping-Pong mechanism: the substrate oxidation followed by the O2 reduction. MCOs have been characterized in details in solution or immobilized on electrode surfaces. The nature of the rate-limiting steps, which is controversial in the literature, is discussed in this mini review for both cases. Deciphering such rate-limiting steps is of particular importance to efficiently use MCOs in any applications requiring the reduction of O2 to water. Limiting rate constant of multicopper oxidase in solution is discussed. Limiting rate constant of immobilized multicopper oxidase is discussed. Homogeneous and heterogeneous enzyme kinetics are compared.
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Affiliation(s)
- Claire Stines-Chaumeil
- CNRS, CRPP, UPR 8641, F-33600 Pessac, France.,Univ. Bordeaux, CRPP, UPR 8641, F-33600 Pessac, France
| | - Elodie Roussarie
- CNRS, CRPP, UPR 8641, F-33600 Pessac, France.,Univ. Bordeaux, CRPP, UPR 8641, F-33600 Pessac, France
| | - Nicolas Mano
- CNRS, CRPP, UPR 8641, F-33600 Pessac, France.,Univ. Bordeaux, CRPP, UPR 8641, F-33600 Pessac, France
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13
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Feng L, Li HP, Galatsis K, Monbouquette HG. Effective NADH sensing by electrooxidation on carbon-nanotube-coated platinum electrodes. J Electroanal Chem (Lausanne) 2016. [DOI: 10.1016/j.jelechem.2016.04.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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14
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Han S, Du T, Jiang H, Wang X. Synergistic effect of pyrroloquinoline quinone and graphene nano-interface for facile fabrication of sensitive NADH biosensor. Biosens Bioelectron 2016; 89:422-429. [PMID: 27156055 DOI: 10.1016/j.bios.2016.04.092] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Revised: 04/12/2016] [Accepted: 04/26/2016] [Indexed: 12/24/2022]
Abstract
A self-assembly composite of graphene-pyrroloquinoline quinone (PQQ) was fabricated and modified on glassy carbon electrode (GCE) for sensitive detection of nicotinamide adenine dinucleotide (NADH). Chitosan (CTS) was applied to disperse graphene to form a stable robust film on GCE. A synergistic effect between PQQ and graphene was observed during the electrocatalytic oxidation of NADH, with about 260mV reduction in the oxidation potential and 2.5-fold increase in the oxidation current compared with those on the bare GCE. The electrochemical sensors based on the modified electrodes allowed the detection of NADH with a good linear dependence from 0.32 to 220µM with a high sensitivity of 0.421µAµM-1cm-2 and a low detection limit of 0.16µM (S/N=3). It could also eliminate the interference of electroactive substances like ascorbic acid (AA), uric acid, and dopamine and its derivatives. The outstanding performances of graphene-PQQ/CTS composite capable of improving the electrical conductivity and accelerating the electron transport suggested its promising applications for design of different graphene based composites used in electrochemical sensing and energy fields.
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Affiliation(s)
- Shanying Han
- State Key Lab of Bioelectronics (Chien-Shiung Wu Laboratory), Southeast University, No. 2 Sipailou, Nanjing 210096, China
| | - Tianyu Du
- State Key Lab of Bioelectronics (Chien-Shiung Wu Laboratory), Southeast University, No. 2 Sipailou, Nanjing 210096, China
| | - Hui Jiang
- State Key Lab of Bioelectronics (Chien-Shiung Wu Laboratory), Southeast University, No. 2 Sipailou, Nanjing 210096, China.
| | - Xuemei Wang
- State Key Lab of Bioelectronics (Chien-Shiung Wu Laboratory), Southeast University, No. 2 Sipailou, Nanjing 210096, China.
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15
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Protein Electrochemistry: Questions and Answers. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2016; 158:1-41. [DOI: 10.1007/10_2015_5016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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16
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Wendlandt AE, Stahl SS. Quinone-Catalyzed Selective Oxidation of Organic Molecules. Angew Chem Int Ed Engl 2015; 54:14638-58. [PMID: 26530485 PMCID: PMC4859943 DOI: 10.1002/anie.201505017] [Citation(s) in RCA: 241] [Impact Index Per Article: 26.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Indexed: 01/12/2023]
Abstract
Quinones are common stoichiometric reagents in organic chemistry. Para-quinones with high reduction potentials, such as DDQ and chloranil, are widely used and typically promote hydride abstraction. In recent years, many catalytic applications of these methods have been achieved by using transition metals, electrochemistry, or O2 to regenerate the oxidized quinone in situ. Complementary studies have led to the development of a different class of quinones that resemble the ortho-quinone cofactors in copper amine oxidases and mediate the efficient and selective aerobic and/or electrochemical dehydrogenation of amines. The latter reactions typically proceed by electrophilic transamination and/or addition-elimination reaction mechanisms, rather than hydride abstraction pathways. The collective observations show that the quinone structure has a significant influence on the reaction mechanism and has important implications for the development of new quinone reagents and quinone-catalyzed transformations.
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Affiliation(s)
- Alison E Wendlandt
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706 (USA)
| | - Shannon S Stahl
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706 (USA).
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17
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Wendlandt AE, Stahl SS. Chinon‐katalysierte, selektive Oxidation organischer Moleküle. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201505017] [Citation(s) in RCA: 85] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Alison E. Wendlandt
- Department of Chemistry, University of Wisconsin‐Madison, 1101 University Avenue, Madison, Wisconsin 53706 (USA)
| | - Shannon S. Stahl
- Department of Chemistry, University of Wisconsin‐Madison, 1101 University Avenue, Madison, Wisconsin 53706 (USA)
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18
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Electrocatalytic activity of activated niclosamide on multi-walled carbon nanotubes glassy carbon electrode toward NADH oxidation. J Solid State Electrochem 2015. [DOI: 10.1007/s10008-015-2862-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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19
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Gayathri P, Senthil Kumar A. Electrochemical behavior of the 1,10-phenanthroline ligand on a multiwalled carbon nanotube surface and its relevant electrochemistry for selective recognition of copper ion and hydrogen peroxide sensing. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:10513-10521. [PMID: 25119115 DOI: 10.1021/la502651w] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
1,10-Phenanthroline (Phen) is a well-known benchmark ligand and has often been used in the coordination chemistry for the complexation of transition metal ions, such as Fe(2+), Ni(2+), and Co(2+). Because the electro-oxidation potential of Phen is much higher (>2 V versus Ag/AgCl) than the water decomposition potential, i.e., ∼1.5 V versus Ag/AgCl, in pH 7, it is practically difficult to electro-oxidize Phen in aqueous medium using any conventional electrodes, such as glassy carbon electrode (GCE), gold, and platinum. Interestingly, herein, we report an unexpected oxidation of Phen to a highly redox active 1,10-phenanthroline-5,6-dione (Phen-dione) and its confinement on a multiwalled carbon nanotube (MWCNT)-modified glassy carbon electrode (GCE/MWCNT@Phen-dione) surface by potential cycling of Phen-adsorbed GCE/MWCNT (GCE/MWCNT@Phen) from -1 to 1 V versus Ag/AgCl in pH 7 phosphate buffer solution. GCE/MWCNT@Phen-dione showed selective recognition of copper ion (GCE/MWCNT@Phen-dione-Cu(2+)) by catalyzing the hydrogen peroxide reduction reaction in a neutral pH solution. The precise structure of the Phen electro-oxidized product has been identified after characterizing the electrode and/or ethanolic extract of the product by various techniques, such as Raman, Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) (for copper complex), liquid chromatography-mass spectrometry (LC-MS), electrospray ionization-mass spectrometry (ESI-MS) (for copper complex), cyclic voltammetry (CV), and in situ electrochemical quartz crystal microbalance (EQCM) and comparing electrochemical behavior of several control compounds, such as phenanthrene and 9,10-phenanthrenequinone. It is concluded that the product formed is 1,10-phenanthroline-5,6-dione, wherein the dione position is ortho to each other and the copper ion is complexed with nitrogen of the phenanthroline ring. With extended electrochemical oxidation of a structurally similar ligand, 2,2'-bipyridine failed to show any such electrochemical dynamics. Finally, applicability of GCE/MWCNT@Phen-dione-Cu(2+) for electrochemical sensing of hydrogen peroxide in a couple of real samples is successfully demonstrated.
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Affiliation(s)
- Prakasam Gayathri
- Environmental and Analytical Chemistry Division, School of Advanced Sciences, Vellore Institute of Technology University , Vellore 632 014, India
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Wendlandt A, Stahl SS. Modular o-quinone catalyst system for dehydrogenation of tetrahydroquinolines under ambient conditions. J Am Chem Soc 2014; 136:11910-3. [PMID: 25109345 PMCID: PMC4151779 DOI: 10.1021/ja506546w] [Citation(s) in RCA: 136] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Indexed: 01/12/2023]
Abstract
Quinolines are common pharmacophores present in numerous FDA-approved pharmaceuticals and other bioactive compounds. Here, we report the design and development of new o-quinone-based catalysts for the oxidative dehydrogenation of tetrahydroquinolines to afford quinolines. Use of a Co(salophen) cocatalyst allows the reaction to proceed efficiently with ambient air at room temperature. The utility of the catalytic method is demonstrated in the preparation of a number of medicinally relevant quinolines.
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Affiliation(s)
- Alison
E. Wendlandt
- Department
of Chemistry, University of Wisconsin—Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Shannon S. Stahl
- Department
of Chemistry, University of Wisconsin—Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
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Albani BA, Durr CB, Peña B, Dunbar KR, Turro C. Isomerization initiated by photoinduced ligand dissociation in Ru(ii) complexes with the ligand 2-p-tolylpyridinecarboxaldimine. Dalton Trans 2014; 43:17828-37. [DOI: 10.1039/c4dt02016b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Zhang G, Kirkman PM, Patel AN, Cuharuc AS, McKelvey K, Unwin PR. Molecular Functionalization of Graphite Surfaces: Basal Plane versus Step Edge Electrochemical Activity. J Am Chem Soc 2014; 136:11444-51. [DOI: 10.1021/ja505266d] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Guohui Zhang
- Department
of Chemistry, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Paul M. Kirkman
- Department
of Chemistry, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Anisha N. Patel
- Department
of Chemistry, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Anatolii S. Cuharuc
- Department
of Chemistry, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Kim McKelvey
- Department
of Chemistry, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Patrick R. Unwin
- Department
of Chemistry, University of Warwick, Coventry CV4 7AL, United Kingdom
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Shul G, Weissmann M, Bélanger D. Electrochemical formation of an ultrathin electroactive film from 1,10-phenanthroline on a glassy carbon electrode in acidic electrolyte. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:6612-6621. [PMID: 24811121 DOI: 10.1021/la500349t] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The electrochemical reduction of 1,10-phenanthroline in aqueous acidic electrolyte at a glassy carbon electrode led to the covalent modification of the electrode. Thereafter, the deposited film can be switched to an electroactive form by electrochemical oxidation. An electroactive film can be also generated by alternate reductive and oxidative voltammetric cycling in a 1,10-phenanthroline/aqueous sulfuric acid solution. First, the electrochemical procedure for the formation of a film is presented. Second, the morphology and chemical structure of 1,10-phenanthroline coatings were investigated by atomic force microscopy, time-of-flight secondary ion mass spectrometry, X-ray photoelectron spectroscopy, and electrochemical techniques. The ultrathin (<15 nm) electrodeposited films consist of oligomeric species. The coatings deposited in alternate and/or continuous reductive and oxidative steps contain oxygen atoms incorporated into the oligomer backbone. The preliminary results point out the formation of a dione derivative that is responsible for the electroactivity of the grafted layer.
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Affiliation(s)
- Galyna Shul
- Département de Chimie, Université du Québec à Montréal , CP8888, Succ. Centre-Ville, Montréal, Québec Canada H3C 3P8
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Dai JW, Li ZY, Sato O. 1,10-Phenanthroline-5,6-dione ethanol monosolvate. Acta Crystallogr Sect E Struct Rep Online 2014; 70:o573. [PMID: 24860377 PMCID: PMC4011276 DOI: 10.1107/s1600536814008241] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2014] [Accepted: 04/11/2014] [Indexed: 11/17/2022]
Abstract
In the title compound, C12H6N2O2·C2H5OH, the molecule of the 1,10-phenanthroline-5,6-dione is approximately planar, with a maximum deviation of 0.051 (1) Å. In the crystal, molecules are linked by O—H⋯N and weak C—H⋯O hydrogen bonds, forming supramolecular chains propagating along [110]. π–π stacking interactions are observed between the pyridine rings of neighbouring chains, the centroid–centroid separations being 3.6226 (11) and 3.7543 (11) Å.
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Affiliation(s)
- Jing-Wei Dai
- Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka 816-8580, Japan
| | - Zhao-Yang Li
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Aoba-ku, Sendai 980-8578, Japan
| | - Osamu Sato
- Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka 816-8580, Japan
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Wright EJ, Sosna M, Bloodworth S, Kilburn JD, Bartlett PN. Design of Maleimide-Functionalised Electrodes for Covalent Attachment of Proteins through Free Surface Cysteine Groups. Chemistry 2014; 20:5550-4. [DOI: 10.1002/chem.201400246] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2014] [Indexed: 11/09/2022]
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Abdellaoui S, Bekhouche M, Noiriel A, Henkens R, Bonaventura C, Blum LJ, Doumèche B. Rapid electrochemical screening of NAD-dependent dehydrogenases in a 96-well format. Chem Commun (Camb) 2013; 49:5781-3. [PMID: 23689734 DOI: 10.1039/c3cc42065e] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The electrochemical detection of dehydrogenase activity in crude cell lysates is performed simultaneously using 96 carbon electrodes modified with electrografted phenazines. The method is applied to the screening of a library of formate dehydrogenase mutants obtained by directed evolution.
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Affiliation(s)
- Sofiène Abdellaoui
- GEMBAS, ICBMS UMR 5246, Université Lyon 1, CNRS, INSA Lyon, CPE Lyon, 43 bd du 11 Novembre 1918, 69622 Villeurbanne Cedex, France
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