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Ben Trad F, Carré B, Delacotte J, Lemaître F, Guille-Collignon M, Arbault S, Sojic N, Labbé E, Buriez O. Electrochemiluminescent imaging of a NADH-based enzymatic reaction confined within giant liposomes. Anal Bioanal Chem 2024:10.1007/s00216-024-05133-y. [PMID: 38227016 DOI: 10.1007/s00216-024-05133-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 12/21/2023] [Accepted: 01/08/2024] [Indexed: 01/17/2024]
Abstract
Herein, transient releases either from NADH-loaded liposomes or enzymatic reactions confined in giant liposomes were imaged by electrochemiluminescence (ECL). NADH was first encapsulated with the [Ru(bpy)3]2+ luminophore inside giant liposomes (around 100 µm in diameter) made of DOPC/DOPG phospholipids (i.e., 1,2-dioleolyl-sn-glycero-3-phosphocholine/1,2-dioleoyl-sn-glycerol-3-phospho-(1'-rac-glycerol) sodium salt) on their inner- and outer-leaflet, respectively. Then, membrane permeabilization triggered upon contact between the liposome and a polarized ITO electrode surface and ECL was locally generated. Combination of amperometry, photoluminescence, and ECL provided a comprehensive monitoring of a single liposome opening and content release. In a second part, the work is focused on the ECL characterization of NADH produced by glucose dehydrogenase (GDH)-catalyzed oxidation of glucose in the confined environment delimited by the liposome membrane. This was achieved by encapsulating both the ECL and catalytic reagents (i.e., the GDH, glucose, NAD+, and [Ru(bpy)3]2+) in the liposome. In accordance with the results obtained, NADH can be used as a biologically compatible ECL co-reactant to image membrane permeabilization events of giant liposomes. Under these conditions, the ECL signal duration was rather long (around 10 s). Since many enzymatic reactions involve the NADH/NAD+ redox couple, this work opens up interesting prospects for the characterization of enzymatic reactions taking place notably in artificial cells and in confined environments.
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Affiliation(s)
- Fatma Ben Trad
- PASTEUR, Département de Chimie, Ecole Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005, Paris, France
| | - Bixente Carré
- PASTEUR, Département de Chimie, Ecole Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005, Paris, France
| | - Jérôme Delacotte
- PASTEUR, Département de Chimie, Ecole Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005, Paris, France
| | - Frédéric Lemaître
- PASTEUR, Département de Chimie, Ecole Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005, Paris, France
| | - Manon Guille-Collignon
- PASTEUR, Département de Chimie, Ecole Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005, Paris, France
| | - Stéphane Arbault
- Univ. Bordeaux, CNRS, Bordeaux INP, CBMN, UMR 5248, 33600, Pessac, France
| | - Neso Sojic
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255 CNRS, 33400, Talence, France.
| | - Eric Labbé
- PASTEUR, Département de Chimie, Ecole Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005, Paris, France
| | - Olivier Buriez
- PASTEUR, Département de Chimie, Ecole Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005, Paris, France.
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2
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del Barrio M, Rana M, Vilatela JJ, Lorenzo E, De Lacey AL, Pita M. Photoelectrocatalytic detection of NADH on n-type silicon semiconductors facilitated by carbon nanotube fibers. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.138071] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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3
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Rezayi M, Mahmoodi P, Langari H, Behnam B, Sahebkar A. Conjugates of Curcumin with Graphene and Carbon Nanotubes: A Review on Biomedical Applications. Curr Med Chem 2021; 27:6849-6863. [PMID: 31724497 DOI: 10.2174/0929867326666191113145745] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 10/06/2019] [Accepted: 10/08/2019] [Indexed: 11/22/2022]
Abstract
In the last decade, the use of carbon nanotubes and graphenes has been on the rise for various nanobiotechnological applications. Owing to their special characteristics, these two nanostructures of carbon allotropes have been studied for their capacity in the detection and treatment of many diseases. On the other hand, curcumin, a well-known antioxidant and anticancer natural product, is being extensively studied for numerous medicinal applications. Interestingly, many reports have shown great potentials of conjugates of curcumin and carbon nanotubes or graphenes. These conjugates, when properly designed and functionalized with biomolecules, could represent the valuable properties of each component alone while they could be effective in overcoming the poor solubility issues of both curcumin and Carbon Nanomaterials (CNMs). In this case, curcumin conjugates with CNMs seem to be very promising in biosensing applications and the detection of many biomolecules, especially, curcumin has been reported to be very effective with these conjugates. Also, the delivery of curcumin using functionalized SWCNTs was evaluated for its ability to load and release curcumin, to protect curcumin from degradation and to enhance its solubility. It is proposed that other properties of these conjugates are still to be discovered and the interdisciplinary approaches among biology, medicine, chemistry, and material engineering will accelerate the applications of these novel materials. This review aims to summarize the findings on the applications of CNM conjugates of curcumin.
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Affiliation(s)
- Majid Rezayi
- Medical Toxicology Research Center, Mashhad University of Medical Sciences, Mashhad 9177948564,
Iran,Department of Modern Sciences and Technologies, School of Medicine, Mashhad University of Medical
Sciences, Mashhad 9177948564, Iran
| | - Pegah Mahmoodi
- Department of Biology, Mashhad Branch, Islamic Azad University,
Mashhad 9177948564, Iran
| | - Hadis Langari
- Department of Modern Sciences and Technologies, School of Medicine, Mashhad University of Medical
Sciences, Mashhad 9177948564, Iran
| | - Behzad Behnam
- Pharmaceutics Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran,Herbal and Traditional Medicines Research Center, Kerman University of Medical Sciences, Kerman, Iran
| | - Amirhossein Sahebkar
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad 9177948564, Iran,Neurogenic Inflammation Research Center, Mashhad University of Medical Sciences, Mashhad 9177948564, Iran,School of Pharmacy, Mashhad University of Medical Sciences, Mashhad 9177948564, Iran
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4
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Salehzadeh H. Tunable oxidative release of N-acetyl-p-benzoquinone-imine and acetamide from electrochemically derived sub-monolayer acetaminophen modified glassy carbon electrode. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2020.114845] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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5
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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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6
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Kim KB, Choi H, Jung HJ, Oh YJ, Cho CH, Min JH, Yoon S, Kim J, Cho SJ, Cha HJ. Mussel-inspired enzyme immobilization and dual real-time compensation algorithms for durable and accurate continuous glucose monitoring. Biosens Bioelectron 2019; 143:111622. [PMID: 31470172 DOI: 10.1016/j.bios.2019.111622] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 08/16/2019] [Accepted: 08/20/2019] [Indexed: 11/29/2022]
Abstract
Blood glucose sensing is very important for diabetic management. It is shifting towards a continuous glucose monitoring because such a system can alleviate patient suffering and provide a large number of glucose measurements. Here, we proposed a novel approach for the development of durable and accurate enzymatic continuous glucose monitoring system (CGMS). For the long-term durable and selective immobilization of glucose oxidase on a microneedle electrode, a biocompatible engineered mussel adhesive protein was employed through efficient electrochemical oxidation strategy. For the accurate performance in in vivo environments, we also suggested dual real-time compensated algorithms to cover both temperature and time-lag differences. After pre-clinical and pilot-clinical evaluations, we confirmed that our proposed CGMS has an outstanding performance compared with various commercially available continuous systems and achieves comparable performance to disposable glucose sensors.
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Affiliation(s)
- Kwang Bok Kim
- Biomedical System and Technology Group, Korea Institute of Industrial Technology, Cheonan, 31056, South Korea
| | - Hyoungseon Choi
- Samsung Research, Samsung Electronics, Seoul R&D Campus, Seoul, 06765, South Korea
| | - Hyun Joo Jung
- Samsung Research, Samsung Electronics, Seoul R&D Campus, Seoul, 06765, South Korea
| | - Young-Jae Oh
- Samsung Research, Samsung Electronics, Seoul R&D Campus, Seoul, 06765, South Korea
| | - Chul-Ho Cho
- Samsung Research, Samsung Electronics, Seoul R&D Campus, Seoul, 06765, South Korea
| | - Jin Hong Min
- Samsung Research, Samsung Electronics, Seoul R&D Campus, Seoul, 06765, South Korea
| | - Seoyoung Yoon
- Samsung Research, Samsung Electronics, Seoul R&D Campus, Seoul, 06765, South Korea
| | - Jaepil Kim
- Samsung Research, Samsung Electronics, Seoul R&D Campus, Seoul, 06765, South Korea
| | - Seong Je Cho
- Samsung Research, Samsung Electronics, Seoul R&D Campus, Seoul, 06765, South Korea.
| | - Hyung Joon Cha
- Department of Chemical Engineering, Pohang University of Science and Technology, Pohang, 37673, South Korea.
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7
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Robole ZM, Rahn KL, Lampkin BJ, Anand RK, VanVeller B. Tuning the Electrochemical Redox Potentials of Catechol with Boronic Acid Derivatives. J Org Chem 2019; 84:2346-2350. [DOI: 10.1021/acs.joc.8b03087] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zachary M. Robole
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Kira L. Rahn
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Bryan J. Lampkin
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Robbyn K. Anand
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Brett VanVeller
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
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8
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Ying YL, Hu YX, Gao R, Yu RJ, Gu Z, Lee LP, Long YT. Asymmetric Nanopore Electrode-Based Amplification for Electron Transfer Imaging in Live Cells. J Am Chem Soc 2018. [PMID: 29529376 DOI: 10.1021/jacs.7b12106] [Citation(s) in RCA: 172] [Impact Index Per Article: 28.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Capturing real-time electron transfer, enzyme activity, molecular dynamics, and biochemical messengers in living cells is essential for understanding the signaling pathways and cellular communications. However, there is no generalizable method for characterizing a broad range of redox-active species in a single living cell at the resolution of cellular compartments. Although nanoelectrodes have been applied in the intracellular detection of redox-active species, the fabrication of nanoelectrodes to maximize the signal-to-noise ratio of the probe remains challenging because of the stringent requirements of 3D fabrication. Here, we report an asymmetric nanopore electrode-based amplification mechanism for the real-time monitoring of NADH in a living cell. We used a two-step 3D fabrication process to develop a modified asymmetric nanopore electrode with a diameter down to 90 nm, which allowed for the detection of redox metabolism in living cells. Taking advantage of the asymmetric geometry, the above 90% potential drop at the two terminals of the nanopore electrode converts the faradaic current response into an easily distinguishable bubble-induced transient ionic current pattern. Therefore, the current signal was amplified by at least 3 orders of magnitude, which was dynamically linked to the presence of trace redox-active species. Compared to traditional wire electrodes, this wireless asymmetric nanopore electrode exhibits a high signal-to-noise ratio by increasing the current resolution from nanoamperes to picoamperes. The asymmetric nanopore electrode achieves the highly sensitive and selective probing of NADH concentrations as low as 1 pM. Moreover, it enables the real-time nanopore monitoring of the respiration chain (i.e., NADH) in a living cell and the evaluation of the effects of anticancer drugs in an MCF-7 cell. We believe that this integrated wireless asymmetric nanopore electrode provides promising building blocks for the future imaging of electron transfer dynamics in live cells.
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Affiliation(s)
- Yi-Lun Ying
- Key Laboratory for Advanced Materials & School of Chemistry and Molecular Engineering , East China University of Science and Technology , Shanghai 200237 , PR China
| | - Yong-Xu Hu
- Key Laboratory for Advanced Materials & School of Chemistry and Molecular Engineering , East China University of Science and Technology , Shanghai 200237 , PR China
| | - Rui Gao
- Key Laboratory for Advanced Materials & School of Chemistry and Molecular Engineering , East China University of Science and Technology , Shanghai 200237 , PR China
| | - Ru-Jia Yu
- Key Laboratory for Advanced Materials & School of Chemistry and Molecular Engineering , East China University of Science and Technology , Shanghai 200237 , PR China
| | - Zhen Gu
- Key Laboratory for Advanced Materials & School of Chemistry and Molecular Engineering , East China University of Science and Technology , Shanghai 200237 , PR China
| | - Luke P Lee
- Biomedical Institute for Global Health Research and Technology , National University of Singapore , 117599 Singapore.,Departments of Bioengineering, Electrical Engineering, and Computer Sciences , ∥Berkeley Sensor and Actuator Center , and ⊥Biophysics Graduate Program , University of California , Berkeley , California 94720 , United States
| | - Yi-Tao Long
- Key Laboratory for Advanced Materials & School of Chemistry and Molecular Engineering , East China University of Science and Technology , Shanghai 200237 , PR China
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9
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Jain R, Haque A, Verma A. Voltammetric quantification of surfactant stabilized curcumin at MWCNT/GCE sensor. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.01.051] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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10
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Mayuri P, Kumar AS. Unexpected Electrochemical Transformation of Aminobenzene Sulfonic Acid Isomers to Respective Surface-Confined-Redox Active Quinones Bypassing Polyaniline on a MWCNT Surface. ChemElectroChem 2017. [DOI: 10.1002/celc.201600622] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Pinapeddavari Mayuri
- Nano and Bioelectrochemistry Research Laboratory; Department of Chemistry; School of Advanced Sciences; Vellore Institute of Technology University; Vellore- 632 014 India
| | - Annamalai Senthil Kumar
- Nano and Bioelectrochemistry Research Laboratory; Department of Chemistry; School of Advanced Sciences; Vellore Institute of Technology University; Vellore- 632 014 India
- Carbon dioxide Research and Green Technology Centre; Vellore Institute of Technology University; Vellore- 632 014 India
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11
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Zhao LJ, Qian RC, Ma W, Tian H, Long YT. Electrocatalytic Efficiency Analysis of Catechol Molecules for NADH Oxidation during Nanoparticle Collision. Anal Chem 2016; 88:8375-9. [DOI: 10.1021/acs.analchem.6b02365] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Li-Jun Zhao
- Key Laboratory for Advanced
Materials and Department of Chemistry, School of Chemistry and Molecular
Engineering, East China University of Science and Technology, 130 Meilong
Road, Shanghai, 200237, P. R. China
| | - Ruo-Can Qian
- Key Laboratory for Advanced
Materials and Department of Chemistry, School of Chemistry and Molecular
Engineering, East China University of Science and Technology, 130 Meilong
Road, Shanghai, 200237, P. R. China
| | - Wei Ma
- Key Laboratory for Advanced
Materials and Department of Chemistry, School of Chemistry and Molecular
Engineering, East China University of Science and Technology, 130 Meilong
Road, Shanghai, 200237, P. R. China
| | - He Tian
- Key Laboratory for Advanced
Materials and Department of Chemistry, School of Chemistry and Molecular
Engineering, East China University of Science and Technology, 130 Meilong
Road, Shanghai, 200237, P. R. China
| | - Yi-Tao Long
- Key Laboratory for Advanced
Materials and Department of Chemistry, School of Chemistry and Molecular
Engineering, East China University of Science and Technology, 130 Meilong
Road, Shanghai, 200237, P. R. China
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12
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Eguílaz M, Gutierrez F, González-Domínguez JM, Martínez MT, Rivas G. Single-walled carbon nanotubes covalently functionalized with polytyrosine: A new material for the development of NADH-based biosensors. Biosens Bioelectron 2016; 86:308-314. [PMID: 27387261 DOI: 10.1016/j.bios.2016.06.003] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Revised: 06/01/2016] [Accepted: 06/02/2016] [Indexed: 12/28/2022]
Abstract
We report for the first time the use of single-walled carbon nanotubes (SWCNT) covalently functionalized with polytyrosine (Polytyr) (SWCNT-Polytyr) as a new electrode material for the development of nicotinamide adenine dinucleotide (NADH)-based biosensors. The oxidation of glassy carbon electrodes (GCE) modified with SWCNT-Polytyr at potentials high enough to oxidize the tyrosine residues have allowed the electrooxidation of NADH at low potentials due to the catalytic activity of the quinones generated from the primary oxidation of tyrosine without any additional redox mediator. The amperometric detection of NADH at 0.200V showed a sensitivity of (217±3)µAmM(-1)cm(-2) and a detection limit of 7.9nM. The excellent electrocatalytic activity of SWCNT-Polytyr towards NADH oxidation has also made possible the development of a sensitive ethanol biosensor through the immobilization of alcohol dehydrogenase (ADH) via Nafion entrapment, with excellent analytical characteristics (sensitivity of (5.8±0.1)µAmM(-1)cm(-2), detection limit of 0.67µM) and very successful application for the quantification of ethanol in different commercial beverages.
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Affiliation(s)
- Marcos Eguílaz
- INFIQC, Departamento de Fisicoquímica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba. Ciudad Universitaria, 5000 Córdoba, Argentina
| | - Fabiana Gutierrez
- INFIQC, Departamento de Fisicoquímica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba. Ciudad Universitaria, 5000 Córdoba, Argentina
| | - Jose Miguel González-Domínguez
- Grupo de nanoestructuras de carbono y Nanotecnología, Departamento de Nanotecnología, Instituto de Carboquímica (CSIC), 50018 Zaragoza, Spain
| | - María T Martínez
- Grupo de nanoestructuras de carbono y Nanotecnología, Departamento de Nanotecnología, Instituto de Carboquímica (CSIC), 50018 Zaragoza, Spain.
| | - Gustavo Rivas
- INFIQC, Departamento de Fisicoquímica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba. Ciudad Universitaria, 5000 Córdoba, Argentina.
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13
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Zhu X, Hu J, Zhao Z, Sun M, Chi X, Wang X, Gao J. Kinetic and sensitive analysis of tyrosinase activity using electron transfer complexes: in vitro and intracellular study. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:862-870. [PMID: 25285706 DOI: 10.1002/smll.201401595] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2014] [Revised: 07/31/2014] [Indexed: 06/03/2023]
Abstract
Tyrosinase is an important marker of human diseases such as the neurodegeneration associated with Parkinson's disease and melanoma. Sensitive detection of tyrosinase activity in vitro and inside cells is of great significance to medical diagnostics and skin disorder treatments. With unique photophysical properties, semiconductor quantum dots (QDs) are employed as photoluminescent platforms for various biosensing, in particular for the detection of enzyme activities. In this work, QDs are functionalized with tyrosine and zwitterionic molecules to construct a nanometer-scale scaffold (QD-Tyr conjugate), and this is used to test tyrosinase activity in vitro and inside cells. Tyrosinase oxidizes tyrosine to dopachrome and switches on the electron-transfer access, which relates to fluorescence quenching. High quenching efficiency is achieved by shortening the distance between the electron donors and acceptors, which is attributed to the small size of the conjugated tyrosine. Enzymatic process curves reveal the enhanced enzymatic activity on the conjugated nanoparticle substrate, which leads to highly sensitive detection of tyrosinase (as low as 1 nM). It is also demonstrated that QD-Tyr conjugates can sensitively probe intracellular tyrosinase in melanoma cells, which promises great potential in disease monitoring and medical diagnostics.
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Affiliation(s)
- Xianglong Zhu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, The Key Laboratory for Chemical Biology of Fujian Province and Department of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P. R. China
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14
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Electrochemical functionalization of graphene nanosheets with catechol derivatives as an effective method for preparation of highly performance supercapacitors. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2014.09.102] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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15
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Lee PT, Lowinsohn D, Compton RG. The selective electrochemical detection of homocysteine in the presence of glutathione, cysteine, and ascorbic acid using carbon electrodes. Analyst 2014; 139:3755-62. [DOI: 10.1039/c4an00372a] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The detection of homocysteine, HCys, was achieved with the use of catecholvia1,4-Michael addition reaction using carbon electrodes: a glassy carbon electrode and a carbon nanotube modified glassy carbon electrode.
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Affiliation(s)
- P. T. Lee
- Department of Chemistry
- Physical and Theoretical Chemistry Laboratory
- Oxford University
- Oxford, OX1 3QZ, UK
| | - D. Lowinsohn
- Department of Chemistry
- Physical and Theoretical Chemistry Laboratory
- Oxford University
- Oxford, OX1 3QZ, UK
- Department of Chemistry
| | - R. G. Compton
- Department of Chemistry
- Physical and Theoretical Chemistry Laboratory
- Oxford University
- Oxford, OX1 3QZ, UK
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16
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Clausmeyer J, Henig J, Schuhmann W, Plumeré N. Scanning Droplet Cell for Chemoselective Patterning through Local Electroactivation of Protected Quinone Monolayers. Chemphyschem 2013; 15:151-6. [DOI: 10.1002/cphc.201300937] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2013] [Indexed: 01/19/2023]
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17
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Masek A, Chrzescijanska E, Zaborski M. Characteristics of curcumin using cyclic voltammetry, UV–vis, fluorescence and thermogravimetric analysis. Electrochim Acta 2013. [DOI: 10.1016/j.electacta.2013.06.037] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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18
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Mechanism diversity in anodic oxidation of N,N-dimethyl-p-phenylenediamine by varying pH. J Electroanal Chem (Lausanne) 2013. [DOI: 10.1016/j.jelechem.2013.06.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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19
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García-Pineda I, Mayén M, Rodríguez-Mellado JM, Rodríguez-Amaro R. NADH Electrocatalytic Oxidation on Gold Nanoparticle-Modified PVC/TTF-TCNQ Composite Electrode. Application as Amperometric Sensor. ELECTROANAL 2013. [DOI: 10.1002/elan.201300167] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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20
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Bioinspired polydopamine as the scaffold for the active AuNPs anchoring and the chemical simultaneously reduced graphene oxide: characterization and the enhanced biosensing application. Biosens Bioelectron 2013; 49:466-71. [PMID: 23811480 DOI: 10.1016/j.bios.2013.06.009] [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] [Received: 04/17/2013] [Revised: 05/30/2013] [Accepted: 06/05/2013] [Indexed: 11/23/2022]
Abstract
We report here an efficient approach to enhance the performance of biosensing platform based on graphene or graphene derivate. Initially, graphene oxides (GO) nanosheets were reduced and surface functionalized by one-step oxidative polymerization of dopamine in basic solution at environment friendly condition to obtain the polydopamine (Pdop) modified reduced graphene oxides (PDRGO). The bioinspired surface was further used as a support to anchor active gold nanoparticles (AuNPs). The morphology and structure of the as-prepared AuNPs/PDRGO nanocomposite were investigated by field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), Fourier transform-infrared spectroscopy (FT-IR). Electrochemical studies demonstrate that the as-prepared AuNPs/PDRGO hybrid materials possess excellent electrochemical properties and electrocatalytic activity toward the oxidation of NADH at low potential (0.1 V vs. SCE) with the fast response (15s) and the broad linear range (5.0 × 10(-8)-4.2 × 10(-5)M). Thus, this AuNPs/PDRGO nanocomposite can be further used to fabricate a sensitive alcohol biosensor using alcohol dehydrogenase (ADH), by simply incorporating the specific enzyme within the composite matrix with the aid of chitosan (Chit).
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