1
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Kimble L, Twiddy JS, Berger JM, Forderhase AG, McCarty GS, Meitzen J, Sombers LA. Simultaneous, Real-Time Detection of Glutamate and Dopamine in Rat Striatum Using Fast-Scan Cyclic Voltammetry. ACS Sens 2023; 8:4091-4100. [PMID: 37962541 PMCID: PMC10683757 DOI: 10.1021/acssensors.3c01267] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 10/24/2023] [Accepted: 11/01/2023] [Indexed: 11/15/2023]
Abstract
Glutamate and dopamine (DA) represent two key contributors to striatal functioning, a region of the brain that is essential to motor coordination and motivated behavior. While electroanalytical techniques can be utilized for rapid, spatially resolved detection of DA in the interferent-rich brain environment, glutamate, a nonelectroactive analyte, cannot be directly detected using electroanalytical techniques. However, it can be probed using enzyme-based sensors, which generate an electroactive reporter in the presence of glutamate. The vast majority of glutamate biosensors have relied on amperometric sensing, which is an inherently nonselective detection technique. This approach necessitates the use of complex and performance-limiting modifications to ensure the desired single-analyte specificity. Here, we present a novel glutamate microbiosensor fabricated on a carbon-fiber microelectrode substrate and coupled with fast-scan cyclic voltammetry (FSCV) to enable the simultaneous quantification of glutamate and DA at single recording sites in the brain, which is impossible when using typical amperometric approaches. The glutamate microbiosensors were characterized for sensitivity, stability, and selectivity by using a voltammetric waveform optimized for the simultaneous detection of both species. The applicability of these sensors for the investigation of neural circuits was validated in the rat ventral striatum. Electrically evoked glutamate and DA release were recorded at single-micrometer-scale locations before and after pharmacological manipulation of glutamatergic signaling. Our novel glutamate microbiosensor advances the state of the art by providing a powerful tool for probing coordination between these two species in a way that has previously not been possible.
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Affiliation(s)
- Laney
C. Kimble
- Department
of Chemistry, Department of Biological Sciences, and Comparative Medicine Institute, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Jack S. Twiddy
- Department
of Chemistry, Department of Biological Sciences, and Comparative Medicine Institute, North Carolina State University, Raleigh, North Carolina 27695, United States
- Joint
Department of Biomedical Engineering, North
Carolina State University and University of North Carolina at Chapel
Hill, Raleigh, North Carolina 27695, United States
| | - Jenna M. Berger
- Department
of Chemistry, Department of Biological Sciences, and Comparative Medicine Institute, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Alexandra G. Forderhase
- Department
of Chemistry, Department of Biological Sciences, and Comparative Medicine Institute, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Gregory S. McCarty
- Department
of Chemistry, Department of Biological Sciences, and Comparative Medicine Institute, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - John Meitzen
- Department
of Chemistry, Department of Biological Sciences, and Comparative Medicine Institute, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Leslie A. Sombers
- Department
of Chemistry, Department of Biological Sciences, and Comparative Medicine Institute, North Carolina State University, Raleigh, North Carolina 27695, United States
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2
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Yamaguchi H, Takahashi K, Tatsumi M, Tagami U, Mizukoshi T, Miyano H, Sugiki M. Development of a novel single-chain l-glutamate oxidase from Streptomyces sp. X-119-6 by inserting flexible linkers. Enzyme Microb Technol 2023; 170:110287. [PMID: 37487431 DOI: 10.1016/j.enzmictec.2023.110287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Revised: 07/09/2023] [Accepted: 07/11/2023] [Indexed: 07/26/2023]
Abstract
L-glutamate oxidase (LGOX, EC: 1.4.3.11) is an oxidoreductase that catalyzes L-glutamate deamination. LGOX from Streptomyces sp. X-119-6 is used widely for L-glutamate quantification in research and industrial applications. This enzyme encoded as a single precursor chain that undergoes post-translational cleavage to four fragments by an endogenous protease to become highly active. Efficient preparation of active LGOX by heterologous expression without proteolysis process should be indispensable for wide application of this enzyme. Thus, developing an LGOX that requires no protease treatment should expand the potential applications of recombinant LGOX. In this report, we succeeded in obtaining an active single-chain LGOX by connecting the four fragments of the mature form with insertion of flexible linkers. The most active single-chain mutant showed the similar activity to that of the mature form from Streptomyces sp. X-119-6. The structure of this mutant was determined at 2.9 Å resolution by X-ray crystallography. It was revealed that this single-stranded mutant had the similar conformation to that of mature form. This single-chain LGOX can be produced efficiently and should expand LGOX applications.
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Affiliation(s)
- Hiroki Yamaguchi
- Research Institute for Bioscience Products & Fine Chemicals, Ajinomoto Co., Inc., 1-1 Suzuki-cho, Kawasaki-ku, Kawasaki 210-8681, Japan.
| | - Kazutoshi Takahashi
- Research Institute for Bioscience Products & Fine Chemicals, Ajinomoto Co., Inc., 1-1 Suzuki-cho, Kawasaki-ku, Kawasaki 210-8681, Japan
| | - Moemi Tatsumi
- Research Institute for Bioscience Products & Fine Chemicals, Ajinomoto Co., Inc., 1-1 Suzuki-cho, Kawasaki-ku, Kawasaki 210-8681, Japan
| | - Uno Tagami
- Research Institute for Bioscience Products & Fine Chemicals, Ajinomoto Co., Inc., 1-1 Suzuki-cho, Kawasaki-ku, Kawasaki 210-8681, Japan
| | - Toshimi Mizukoshi
- Research Institute for Bioscience Products & Fine Chemicals, Ajinomoto Co., Inc., 1-1 Suzuki-cho, Kawasaki-ku, Kawasaki 210-8681, Japan
| | - Hiroshi Miyano
- Research Institute for Bioscience Products & Fine Chemicals, Ajinomoto Co., Inc., 1-1 Suzuki-cho, Kawasaki-ku, Kawasaki 210-8681, Japan
| | - Masayuki Sugiki
- Research Institute for Bioscience Products & Fine Chemicals, Ajinomoto Co., Inc., 1-1 Suzuki-cho, Kawasaki-ku, Kawasaki 210-8681, Japan.
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3
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Construction of minitype glutamate sensor for in vivo monitoring of L-glutamate in plant. Microchem J 2023. [DOI: 10.1016/j.microc.2023.108505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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4
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Chauhan S, Sharma C. A Non‐Enzymatic and Electrochemical‐Based Sensor using a Prussian Blue‐Gold Nanoparticle‐Reduced Graphene Oxide Ternary Nanocomposite for Efficient Hydrogen Peroxide Detection. ChemistrySelect 2022. [DOI: 10.1002/slct.202203223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Seema Chauhan
- Department of Paper Technology Indian Institute of Technology Roorkee, Saharanpur Campus Saharanpur 247001 India
| | - Chhaya Sharma
- Department of Paper Technology Indian Institute of Technology Roorkee, Saharanpur Campus Saharanpur 247001 India
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5
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Morais A, Rijo P, Batanero B, Nicolai M. Low Platinum-Content Electrocatalysts for Highly Sensitive Detection of Endogenously Released H2O2. BIOSENSORS 2022; 12:bios12090672. [PMID: 36140056 PMCID: PMC9496631 DOI: 10.3390/bios12090672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 08/05/2022] [Accepted: 08/12/2022] [Indexed: 11/16/2022]
Abstract
The commercial viability of electrochemical sensors requires high catalytic efficiency electrode materials. A sluggish reaction of the sensor’s primary target species will require a high overpotential and, consequently, an excessive load of catalyst material to be used. Therefore, it is essential to understand nanocatalysts’ fundamental structures and typical catalytic properties to choose the most efficient material according to the biosensor target species. Catalytic activities of Pt-based catalysts have been significantly improved over the decades. Thus, electrodes using platinum nanocatalysts have demonstrated high power densities, with Pt loading considerably reduced on the electrodes. The high surface-to-volume ratio, higher electron transfer rate, and the simple functionalisation process are the main reasons that transition metal NPs have gained much attention in constructing high-sensitivity sensors. This study has designed to describe and highlight the performances of the different Pt-based bimetallic nanoparticles and alloys as an enzyme-free catalytic material for the sensitive electrochemical detection of H2O2. The current analysis may provide a promising platform for the prospective construction of Pt-based electrodes and their affinity matrix.
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Affiliation(s)
- Ana Morais
- CBIOS—Universidade Lusófona´s Research Centre for Biosciences & Health Technologies, Campo Grande 376, 1749-024 Lisbon, Portugal
- Department of Organic Chemistry & Inorganic Chemistry, University of Alcala, 28805 Alcala de Henares, Spain
| | - Patrícia Rijo
- CBIOS—Universidade Lusófona´s Research Centre for Biosciences & Health Technologies, Campo Grande 376, 1749-024 Lisbon, Portugal
- iMed.Ulisboa—Research Institute for Medicines and Pharmaceutical Sciences, Faculty of Pharmacy, University of Lisbon, Av. Prof. Gama Pinto, 1649-003 Lisbon, Portugal
| | - Belen Batanero
- Department of Organic Chemistry & Inorganic Chemistry, University of Alcala, 28805 Alcala de Henares, Spain
| | - Marisa Nicolai
- CBIOS—Universidade Lusófona´s Research Centre for Biosciences & Health Technologies, Campo Grande 376, 1749-024 Lisbon, Portugal
- Correspondence:
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6
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Bhavadharini B, Kavimughil M, Malini B, Vallath A, Prajapati HK, Sunil CK. Recent Advances in Biosensors for Detection of Chemical Contaminants in Food — a Review. FOOD ANAL METHOD 2022. [DOI: 10.1007/s12161-021-02213-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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7
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Alotaibi BS, Buabeid M, Ibrahim NA, Kharaba ZJ, Ijaz M, Noreen S, Murtaza G. Potential of Nanocarrier-Based Drug Delivery Systems for Brain Targeting: A Current Review of Literature. Int J Nanomedicine 2021; 16:7517-7533. [PMID: 34795481 PMCID: PMC8593899 DOI: 10.2147/ijn.s333657] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 09/18/2021] [Indexed: 12/18/2022] Open
Abstract
The advent of nanotechnologies such as nanocarriers and nanotherapeutics has changed the treatment strategy and developed a more efficacious novel drug delivery system. Various drug delivery systems are focused on drug-targeting of brain cells. However, the manifestation of the brain barrier is the main hurdle for the effective delivery of chemotherapeutics, ultimately causing treatment failure of various drugs. To solve this problem, various nanocarrier-based drug delivery system has been developed for brain targeting. This review outlines nanocarrier-based composites for different brain diseases and highlights nanocarriers for drug targeting towards brain cells. It also summarizes the latest developments in nanocarrier-based delivery systems containing liposomal systems, dendrimers, polymeric micelles, polymeric nanocarriers, quantum dots (QDs), and gold nanoparticles. Besides, the optimal properties of nanocarriers and therapeutic implications for brain targeting have been extensively studied. Finally, the potential applications and research opportunities for nanocarriers in brain targeting are discussed.
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Affiliation(s)
- Badriyah Shadid Alotaibi
- Department of Pharmaceutical Sciences, College of Pharmacy, Princess Nourah Bint Abdulrahman University, Riyadh, Saudi Arabia
| | - Manal Buabeid
- Medical and Bio-allied Health Sciences Research Centre, Ajman University, Ajman, United Arab Emirates
- Department of Clinical Sciences, Ajman University, Ajman, 346, United Arab Emirates
| | - Nihal Abdalla Ibrahim
- Medical and Bio-allied Health Sciences Research Centre, Ajman University, Ajman, United Arab Emirates
- Department of Clinical Sciences, Ajman University, Ajman, 346, United Arab Emirates
| | - Zelal Jaber Kharaba
- Department of Clinical Sciences, College of Pharmacy, Al-Ain University of Science and Technology, Abu Dhabi, United Arab Emirates
| | - Munazza Ijaz
- Institute of Molecular Biology and Biotechnology, the University of Lahore, Lahore, Pakistan
| | - Sobia Noreen
- Department of Pharmaceutics, Faculty of Pharmacy, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
| | - Ghulam Murtaza
- Department of Pharmacy, COMSATS University Islamabad, Lahore Campus, Lahore, 54000, Pakistan
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8
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Song H, Liu Y, Fang Y, Zhang D. Carbon-Based Electrochemical Sensors for In Vivo and In Vitro Neurotransmitter Detection. Crit Rev Anal Chem 2021; 53:955-974. [PMID: 34752170 DOI: 10.1080/10408347.2021.1997571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/21/2023]
Abstract
As essential neurological chemical messengers, neurotransmitters play an integral role in the maintenance of normal mammalian physiology. Aberrant neurotransmitter activity is associated with a range of neurological conditions including Parkinson's disease, Alzheimer's disease, and Huntington's disease. Many studies to date have tested different approaches to detecting neurotransmitters, yet the detection of these materials within the brain, due to the complex environment of the brain and the rapid metabolism of neurotransmitters, remains challenging and an area of active research. There is a clear need for the development of novel neurotransmitter sensing technologies capable of rapidly and sensitively monitoring specific analytes within the brain without adversely impacting the local microenvironment in which they are implanted. Owing to their excellent sensitivity, portability, ease-of-use, amenability to microprocessing, and low cost, electrochemical sensors methods have been widely studied in the context of neurotransmitter monitoring. The present review, thus, surveys current progress in this research field, discussing developed electrochemical neurotransmitter sensors capable of detecting dopamine (DA), serotonin (5-HT), acetylcholine (Ach), glutamate (Glu), nitric oxide (NO), adenosine (ADO), and so on. Of these technologies, those based on carbon nanostructures-modified electrodes including carbon nanotubes (CNTs), graphene (GR), gaphdiyne (GDY), carbon nanofibers (CNFs), and derivatives thereof hold particular promise owing to their excellent biocompatibility and electrocatalytic performance. The continued development of these and related technologies is, thus, likely to lead to major advances in the clinical diagnosis of neurological diseases and the detection of novel biomarkers thereof.
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Affiliation(s)
- Huijun Song
- Research Center of Experimental Acupuncture Science, College of Acumox and Tuina, Tianjin University of Traditional Chinese Medicine, Tianjin, PR China
| | - Yangyang Liu
- Research Center of Experimental Acupuncture Science, College of Acumox and Tuina, Tianjin University of Traditional Chinese Medicine, Tianjin, PR China
| | - Yuxin Fang
- Research Center of Experimental Acupuncture Science, College of Acumox and Tuina, Tianjin University of Traditional Chinese Medicine, Tianjin, PR China
| | - Di Zhang
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, PR China
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9
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Soon GH, Deasy M, Dempsey E. An Electrochemical Evaluation of Novel Ferrocene Derivatives for Glutamate and Liver Biomarker Biosensing. BIOSENSORS 2021; 11:254. [PMID: 34436056 PMCID: PMC8392419 DOI: 10.3390/bios11080254] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 07/12/2021] [Accepted: 07/13/2021] [Indexed: 06/13/2023]
Abstract
Here, we present an evaluation of two new monosubstituted ferrocene (Fc) derivatives, 3-(1H-pyrrol-1-yl)propanamidoferrocene and 1-hydroxy-2-[2-(thiophen-3-yl)-ethylamino]ethylferrocene, as glutamate oxidase mediators, together with their preparation and characterisation. Taking into consideration the influence of the electronic effects of substituents on the redox potentials of the Fc species, two candidates with pyrrole or thiophene moieties were proposed for investigation. Film studies involved potential sweeping in the presence of pyrrole or 3,4-ethylenedioxythiophene monomers resulting in stable electroactive films with % signal loss upon cycling ranging from 1 to 7.82% and surface coverage (Γ) 0.47-1.15 × 10-9 mol/cm2 for films formed under optimal conditions. Construction of a glutamate oxidase modified electrode resulted in second-generation biosensing with the aid of both cyclic voltammetry and hydrodynamic amperometry, resulting in glutamate sensitivity of 0.86-1.28 μA/mM and Km (app) values over the range 3.67-5.01 mM. A follow-up enzyme assay for liver biomarker γ-glutamyl transpeptidase realised unmediated and mediated measurement establishing reaction and incubation time investigations and a realising response over <100 U/L γ-glutamyl transpeptidase with a sensitivity of 5 nA/UL-1.
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Affiliation(s)
- Geok Hong Soon
- Centre of Applied Science for Health (CASH), Technological University of Dublin, Tallaght, D24 FKT9 Dublin, Ireland; (G.H.S.); (M.D.)
| | - Mary Deasy
- Centre of Applied Science for Health (CASH), Technological University of Dublin, Tallaght, D24 FKT9 Dublin, Ireland; (G.H.S.); (M.D.)
| | - Eithne Dempsey
- Department of Chemistry, Kathleen Lonsdale Institute for Human Health, Maynooth University, Maynooth, W23 F2H6 Co. Kildare, Ireland
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10
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Gayda GZ, Demkiv OM, Gurianov Y, Serkiz RY, Klepach HM, Gonchar MV, Nisnevitch M. "Green" Prussian Blue Analogues as Peroxidase Mimetics for Amperometric Sensing and Biosensing. BIOSENSORS 2021; 11:193. [PMID: 34200755 PMCID: PMC8229941 DOI: 10.3390/bios11060193] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 06/08/2021] [Accepted: 06/09/2021] [Indexed: 12/17/2022]
Abstract
Prussian blue analogs (PBAs) are well-known artificial enzymes with peroxidase (PO)-like activity. PBAs have a high potential for applications in scientific investigations, industry, ecology and medicine. Being stable and both catalytically and electrochemically active, PBAs are promising in the construction of biosensors and biofuel cells. The "green" synthesis of PO-like PBAs using oxido-reductase flavocytochrome b2 is described in this study. When immobilized on graphite electrodes (GEs), the obtained green-synthesized PBAs or hexacyanoferrates (gHCFs) of transition and noble metals produced amperometric signals in response to H2O2. HCFs of copper, iron, palladium and other metals were synthesized and characterized by structure, size, catalytic properties and electro-mediator activities. The gCuHCF, as the most effective PO mimetic with a flower-like micro/nano superstructure, was used as an H2O2-sensitive platform for the development of a glucose oxidase (GO)-based biosensor. The GO/gCuHCF/GE biosensor exhibited high sensitivity (710 A M-1m-2), a broad linear range and good selectivity when tested on real samples of fruit juices. We propose that the gCuHCF and other gHCFs synthesized via enzymes may be used as artificial POs in amperometric oxidase-based (bio)sensors.
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Affiliation(s)
- Galina Z. Gayda
- Institute of Cell Biology, National Academy of Sciences of Ukraine, 79005 Lviv, Ukraine; (O.M.D.); (R.Y.S.); (M.V.G.)
| | - Olha M. Demkiv
- Institute of Cell Biology, National Academy of Sciences of Ukraine, 79005 Lviv, Ukraine; (O.M.D.); (R.Y.S.); (M.V.G.)
- Faculty of Veterinary Hygiene, Ecology and Law, Stepan Gzhytskyi National University of Veterinary Medicine and Biotechnologies, 79000 Lviv, Ukraine
| | - Yanna Gurianov
- Department of Chemical Engineering, Ariel University, Kyriat-ha-Mada, Ariel 4070000, Israel;
| | - Roman Ya. Serkiz
- Institute of Cell Biology, National Academy of Sciences of Ukraine, 79005 Lviv, Ukraine; (O.M.D.); (R.Y.S.); (M.V.G.)
| | - Halyna M. Klepach
- Faculty of Biology and Natural Sciences, Drohobych Ivan Franko State Pedagogical University, 82100 Drohobych, Ukraine;
| | - Mykhailo V. Gonchar
- Institute of Cell Biology, National Academy of Sciences of Ukraine, 79005 Lviv, Ukraine; (O.M.D.); (R.Y.S.); (M.V.G.)
- Faculty of Biology and Natural Sciences, Drohobych Ivan Franko State Pedagogical University, 82100 Drohobych, Ukraine;
| | - Marina Nisnevitch
- Department of Chemical Engineering, Ariel University, Kyriat-ha-Mada, Ariel 4070000, Israel;
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11
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Gao X, Wang Q, Cheng C, Lin S, Lin T, Liu C, Han X. The Application of Prussian Blue Nanoparticles in Tumor Diagnosis and Treatment. SENSORS (BASEL, SWITZERLAND) 2020; 20:E6905. [PMID: 33287186 PMCID: PMC7730465 DOI: 10.3390/s20236905] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 11/30/2020] [Accepted: 11/30/2020] [Indexed: 12/15/2022]
Abstract
Prussian blue nanoparticles (PBNPs) have attracted increasing research interest in immunosensors, bioimaging, drug delivery, and application as therapeutic agents due to their large internal pore volume, tunable size, easy synthesis and surface modification, good thermal stability, and favorable biocompatibility. This review first outlines the effect of tumor markers using PBNPs-based immunosensors which have a sandwich-type architecture and competitive-type structure. Metal ion doped PBNPs which were used as T1-weight magnetic resonance and photoacoustic imaging agents to improve image quality and surface modified PBNPs which were used as drug carriers to decrease side effects via passive or active targeting to tumor sites are also summarized. Moreover, the PBNPs with high photothermal efficiency and excellent catalase-like activity were promising for photothermal therapy and O2 self-supplied photodynamic therapy of tumors. Hence, PBNPs-based multimodal imaging-guided combinational tumor therapies (such as chemo, photothermal, and photodynamic therapies) were finally reviewed. This review aims to inspire broad interest in the rational design and application of PBNPs for detecting and treating tumors in clinical research.
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Affiliation(s)
| | | | - Cui Cheng
- College of Biological Science and Engineering, Fuzhou University, Fuzhou 350108, China; (X.G.); (Q.W.); (S.L.); (T.L.); (C.L.); (X.H.)
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12
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Minta D, González Z, Wiench P, Gryglewicz S, Gryglewicz G. N-Doped Reduced Graphene Oxide/Gold Nanoparticles Composite as an Improved Sensing Platform for Simultaneous Detection of Dopamine, Ascorbic Acid, and Uric Acid. SENSORS 2020; 20:s20164427. [PMID: 32784787 PMCID: PMC7472481 DOI: 10.3390/s20164427] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 08/04/2020] [Accepted: 08/05/2020] [Indexed: 12/25/2022]
Abstract
Gold nanoparticles (AuNPs) were homogeneously electrodeposited on nitrogen-doped reduced graphene oxide (N-rGO) to modify a glassy carbon electrode (GCE/N-rGO-Au) in order to improve the simultaneous detection of dopamine (DA), ascorbic acid (AA), and uric acid (UA). N-rGO was prepared by the hydrothermal treatment of graphene oxide (GO) and urea at 180 °C for 12 h. AuNPs were subsequently electrodeposited onto the surface of GCE/N-rGO using 1 mM HAuCl4 solution. The morphology and chemical composition of the synthesized materials were characterized by field-emission scanning electron microscopy and X-ray photoelectron spectroscopy. The electrochemical performance of the modified electrodes was investigated through cyclic voltammetry and differential pulse voltammetry measurements. Compared to GCE/rGO-Au, GCE/N-rGO-Au exhibited better electrochemical performance towards the simultaneous detection of the three analytes due to the more homogeneous distribution of the metallic nanoparticles as a result of more efficient anchoring on the N-doped areas of the graphene structure. The GCE/N-rGO-Au-based sensor operated in a wide linear range of DA (3–100 µM), AA (550–1500 µM), and UA (20–1000 µM) concentrations with a detection limit of 2.4, 58, and 8.7 µM, respectively, and exhibited satisfactory peak potential separation values of 0.34 V (AA-DA), 0.20 V, (DA-UA) and 0.54 V (AA-UA). Remarkably, GCE/N-rGO-Au showed a very low detection limit of 385 nM towards DA, not being susceptible to interference, and maintained 90% of its initial electrochemical signal after one month, indicating an excellent long-term stability.
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Affiliation(s)
- Daria Minta
- Department of Process Engineering and Technology of Polymer and Carbon Materials, Faculty of Chemistry, Wrocław University of Science and Technology, Gdańska 7/9, 50-344 Wrocław, Poland; (D.M.); (P.W.)
| | - Zoraida González
- Instituto de Ciencia y Tecnología del Carbono, INCAR-CSIC, Francisco Pintado Fe 26, 33011 Oviedo, Spain;
| | - Piotr Wiench
- Department of Process Engineering and Technology of Polymer and Carbon Materials, Faculty of Chemistry, Wrocław University of Science and Technology, Gdańska 7/9, 50-344 Wrocław, Poland; (D.M.); (P.W.)
| | - Stanisław Gryglewicz
- Department of Engineering and Technology of Chemical Processes, Faculty of Chemistry, Wrocław University of Science and Technology, Smoluchowskiego 25, 50-372 Wrocław, Poland;
| | - Grażyna Gryglewicz
- Department of Process Engineering and Technology of Polymer and Carbon Materials, Faculty of Chemistry, Wrocław University of Science and Technology, Gdańska 7/9, 50-344 Wrocław, Poland; (D.M.); (P.W.)
- Correspondence: ; Tel.: +48-71-320-6398; Fax: +48-71-320-6506
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