1
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Nguyen TNH, Horowitz LF, Krilov T, Lockhart E, Kenerson HL, Gujral TS, Yeung RS, Arroyo-Currás N, Folch A. Label-free, real-time monitoring of cytochrome C drug responses in microdissected tumor biopsies with a multi-well aptasensor platform. SCIENCE ADVANCES 2024; 10:eadn5875. [PMID: 39241078 PMCID: PMC11378948 DOI: 10.1126/sciadv.adn5875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Accepted: 07/31/2024] [Indexed: 09/08/2024]
Abstract
Functional assays on intact tumor biopsies can complement genomics-based approaches for precision oncology, drug testing, and organs-on-chips cancer disease models by capturing key therapeutic response determinants, such as tissue architecture, tumor heterogeneity, and the tumor microenvironment. Most of these assays rely on fluorescent labeling, a semiquantitative method best suited for single-time-point assays or labor-intensive immunostaining analysis. Here, we report integrated aptamer electrochemical sensors for on-chip, real-time monitoring of cytochrome C, a cell death indicator, from intact microdissected tissues with high affinity and specificity. The platform features a multi-well sensor layout and a multiplexed electronic setup. The aptasensors measure increases in cytochrome C in the supernatant of mouse or human microdissected tumors after exposure to various drug treatments. Because of the sensor's high affinity, it primarily tracks rising concentrations of cytochrome C, capturing dynamic changes during apoptosis. This approach could help develop more advanced cancer disease models and apply to other complex in vitro disease models, such as organs-on-chips and organoids.
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Affiliation(s)
- Tran N H Nguyen
- Department of Bioengineering, University of Washington, Seattle, WA 98105, USA
| | - Lisa F Horowitz
- Department of Bioengineering, University of Washington, Seattle, WA 98105, USA
| | - Timothy Krilov
- Department of Bioengineering, University of Washington, Seattle, WA 98105, USA
| | - Ethan Lockhart
- Department of Bioengineering, University of Washington, Seattle, WA 98105, USA
| | - Heidi L Kenerson
- Department of Surgery, University of Washington, Seattle, WA 98105, USA
| | - Taranjit S Gujral
- Human Biology Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98105, USA
| | - Raymond S Yeung
- Department of Surgery, University of Washington, Seattle, WA 98105, USA
| | | | - Albert Folch
- Department of Bioengineering, University of Washington, Seattle, WA 98105, USA
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2
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Carota AG, Bonini A, Urban M, Poma N, Vivaldi FM, Tavanti A, Rossetti M, Rosati G, Merkoçi A, Di Francesco F. Low-cost inkjet-printed nanostructured biosensor based on CRISPR/Cas12a system for pathogen detection. Biosens Bioelectron 2024; 258:116340. [PMID: 38718633 DOI: 10.1016/j.bios.2024.116340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 04/12/2024] [Accepted: 04/24/2024] [Indexed: 05/21/2024]
Abstract
The escalating global incidence of infectious diseases caused by pathogenic bacteria, especially in developing countries, emphasises the urgent need for rapid and portable pathogen detection devices. This study introduces a sensitive and specific electrochemical biosensing platform utilising cost-effective electrodes fabricated by inkjet-printing gold and silver nanoparticles on a plastic substrate. The biosensor exploits the CRISPR/Cas12a system for detecting a specific DNA sequence selected from the genome of the target pathogen. Upon detection, the trans-activity of Cas12a/gRNA is triggered, leading to the cleavage of rationally designed single-strand DNA reporters (linear and hairpin) labelled with methylene blue (ssDNA-MB) and bound to the electrode surface. In principle, this sensing mechanism can be adapted to any bacterium by choosing a proper guide RNA to target a specific sequence of its DNA. The biosensor's performance was assessed for two representative pathogens (a Gram-negative, Escherichia coli, and a Gram-positive, Staphylococcus aureus), and results obtained with inkjet-printed gold electrodes were compared with those obtained by commercial screen-printed gold electrodes. Our results show that the use of inkjet-printed nanostructured gold electrodes, which provide a large surface area, in combination with the use of hairpin reporters containing a poly-T loop can increase the sensitivity of the assay corresponding to a signal variation of 86%. DNA targets amplified from various clinically isolated bacteria, have been tested and demonstrate the potential of the proposed platform for point-of-need applications.
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Affiliation(s)
- Angela Gilda Carota
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via Giuseppe Moruzzi 13, 56124 Pisa, Italy
| | - Andrea Bonini
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via Giuseppe Moruzzi 13, 56124 Pisa, Italy; Department of Biology, University of Pisa, Via San Zeno 37, 56127 Pisa, Italy.
| | - Massimo Urban
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193 Barcelona, Spain
| | - Noemi Poma
- Department of Biology, University of Pisa, Via San Zeno 37, 56127 Pisa, Italy
| | - Federico Maria Vivaldi
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via Giuseppe Moruzzi 13, 56124 Pisa, Italy
| | - Arianna Tavanti
- Department of Biology, University of Pisa, Via San Zeno 37, 56127 Pisa, Italy
| | - Marianna Rossetti
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193 Barcelona, Spain
| | - Giulio Rosati
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193 Barcelona, Spain
| | - Arben Merkoçi
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193 Barcelona, Spain; Catalan Institution for Research and Advanced Studies (ICREA), Passeig de Lluís Companys, 23, Barcelona, 08010, Spain
| | - Fabio Di Francesco
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via Giuseppe Moruzzi 13, 56124 Pisa, Italy.
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3
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Laws K, Buckingham MA, Aldous L. Self-assembled monolayers for electrostatic electrocatalysis and enhanced electrode stability in thermogalvanic cells. Chem Sci 2024; 15:6958-6964. [PMID: 38725507 PMCID: PMC11077577 DOI: 10.1039/d3sc06766a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Accepted: 04/02/2024] [Indexed: 05/12/2024] Open
Abstract
Waste heat is ubiquitous; as such, sustainable and long-lasting devices are required to convert it into more useful forms of energy that can make use of this abundant potential resource. Thermogalvanic cells (or thermocells) can use the thermoelectrochemical properties of redox couples to achieve this; entropy-driven redox reactions allow them to act as liquid thermoelectrics. However, excellent electrocatalysis at the electrode surface is required for optimum conversion efficiency. Serendipitous observation of Nafion-based electrocatalysis prompted the exploration of electrostatically charged self-assembled monolayers (SAMs) inside a thermocell. Both electrostatic electrocatalysis and improved electrode stability were observed; in an aqueous K3[Fe(CN)6]/K4[Fe(CN)6]-based cell, modification with (3-trimethylammonium bromide)thiopropane resulted in higher electrical power, and protection against [Fe(CN)6]3-/4--induced gold passivation, relative to bare gold. Molecular-based electrostatic electrocatalysis could be an alternative to precious metal-based nanomaterial electrocatalysis, and could be integrated with (nano)carbon-based electrodes to further enhance the ability of thermogalvanic and other electrochemical energy conversion devices, e.g. redox flow batteries.
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Affiliation(s)
- Kristine Laws
- Department of Chemistry, Britannia House, King's College London London SE1 1DB UK
| | - Mark A Buckingham
- Department of Chemistry, Britannia House, King's College London London SE1 1DB UK
| | - Leigh Aldous
- Department of Chemistry, Britannia House, King's College London London SE1 1DB UK
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4
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Miranda Mercado DA, Godoy Alarcón EV, V-Niño ED. Time evolution of electrical impedance spectra of Staphylococcus aureus and Escherichia coli bacteria. Bioelectrochemistry 2024; 155:108557. [PMID: 37708781 DOI: 10.1016/j.bioelechem.2023.108557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 09/04/2023] [Accepted: 09/05/2023] [Indexed: 09/16/2023]
Abstract
This research work reports the time evolution of the electrical properties of gram-positive and gram-negative bacteria in aqueous suspensions with methyl violet and Lugol; measurements of galvanostatic electrical impedance spectra were made in a frequency range of 10Hz to 100kHz. The magnitude of the impedance as a function of frequency for methicillin-resistant strains, Staphylococcus aureus (gram-positive), and Escherichia coli O157: H7 (gram-negative) in the presence of methyl violet and Lugol, showed that both strains exhibited a progressive decrease in the magnitude of the electrical impedance with an increasing bacterial population; however, the variation in the magnitude rate of the impedance over time is completely different between the gram-positive and gram-negative strains. The results suggest that the time evolution of the electrical impedance spectra can be used to differentiate Staphylococcus aureus from Escherichia coli bacteria.
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Affiliation(s)
| | - Erika Viviana Godoy Alarcón
- Instituto de Química, Universidade Estadual Paulista, Rua Prof. Francisco Degni, 55, Araraquara 14800-060, São Paulo, Brazil
| | - Ely Dannier V-Niño
- Escuela de Física, Universidad Industrial de Santander, Carrera 27, Calle 9, Bucaramanga 680002, Santander, Colombia
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Foguel MV, Zamora V, Ojeda J, Reed M, Bennett A, Calvo-Marzal P, Gerasimova YV, Kolpashchikov D, Chumbimuni-Torres KY. DNA nanotechnology for nucleic acid analysis: sensing of nucleic acids with DNA junction-probes. Analyst 2024; 149:968-974. [PMID: 38197474 PMCID: PMC11439508 DOI: 10.1039/d3an01707a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2024]
Abstract
DNA nanotechnology deals with the design of non-naturally occurring DNA nanostructures that can be used in biotechnology, medicine, and diagnostics. In this study, we introduced a nucleic acid five-way junction (5WJ) structure for direct electrochemical analysis of full-length biological RNAs. To the best of our knowledge, this is the first report on the interrogation of such long nucleic acid sequences by hybridization probes attached to a solid support. A hairpin-shaped electrode-bound oligonucleotide hybridizes with three adaptor strands, one of which is labeled with methylene blue (MB). The four strands are combined into a 5WJ structure only in the presence of specific DNA or RNA analytes. Upon interrogation of a full-size 16S rRNA in the total RNA sample, the electrode-bound MB-labeled 5WJ association produces a higher signal-to-noise ratio than electrochemical nucleic acid biosensors of alternative design. This advantage was attributed to the favorable geometry on the 5WJ nanostructure formed on the electrode's surface. The 5WJ biosensor is a cost-efficient alternative to the traditional electrochemical biosensors for the analysis of nucleic acids due to the universal nature of both the electrode-bound and MB-labeled DNA components.
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Affiliation(s)
- Marcos V Foguel
- Department of Chemistry. University of Central Florida, 4000 Central Florida Boulevard, Orlando, Fl 32816, USA.
| | - Victor Zamora
- Escuela Professional de Quimica, Facultad de Ciencias, Universidad Nacional Ingenieria, Av. Tupac 210, Lima, Peru
| | - Julio Ojeda
- Department of Chemistry. University of Central Florida, 4000 Central Florida Boulevard, Orlando, Fl 32816, USA.
| | - Mark Reed
- Department of Chemistry. University of Central Florida, 4000 Central Florida Boulevard, Orlando, Fl 32816, USA.
| | - Alexander Bennett
- Department of Chemistry. University of Central Florida, 4000 Central Florida Boulevard, Orlando, Fl 32816, USA.
| | - Percy Calvo-Marzal
- Department of Chemistry. University of Central Florida, 4000 Central Florida Boulevard, Orlando, Fl 32816, USA.
| | - Yulia V Gerasimova
- Department of Chemistry. University of Central Florida, 4000 Central Florida Boulevard, Orlando, Fl 32816, USA.
| | - Dmitry Kolpashchikov
- Department of Chemistry. University of Central Florida, 4000 Central Florida Boulevard, Orlando, Fl 32816, USA.
- Burnett School of Biomedical Science, university of Central Florida, 4000 Central Florida Boulevard, Orlando, Fl 32816, USA
| | - Karin Y Chumbimuni-Torres
- Department of Chemistry. University of Central Florida, 4000 Central Florida Boulevard, Orlando, Fl 32816, USA.
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6
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Ong V, Soleimani A, Amirghasemi F, Khazaee Nejad S, Abdelmonem M, Razaviyayn M, Hosseinzadeh P, Comai L, Mousavi MPS. Impedimetric Sensing: An Emerging Tool for Combating the COVID-19 Pandemic. BIOSENSORS 2023; 13:204. [PMID: 36831970 PMCID: PMC9953732 DOI: 10.3390/bios13020204] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 01/24/2023] [Accepted: 01/26/2023] [Indexed: 06/12/2023]
Abstract
The COVID-19 pandemic revealed a pressing need for the development of sensitive and low-cost point-of-care sensors for disease diagnosis. The current standard of care for COVID-19 is quantitative reverse transcriptase polymerase chain reaction (qRT-PCR). This method is sensitive, but takes time, effort, and requires specialized equipment and reagents to be performed correctly. This make it unsuitable for widespread, rapid testing and causes poor individual and policy decision-making. Rapid antigen tests (RATs) are a widely used alternative that provide results quickly but have low sensitivity and are prone to false negatives, particularly in cases with lower viral burden. Electrochemical sensors have shown much promise in filling this technology gap, and impedance spectroscopy specifically has exciting potential in rapid screening of COVID-19. Due to the data-rich nature of impedance measurements performed at different frequencies, this method lends itself to machine-leaning (ML) algorithms for further data processing. This review summarizes the current state of impedance spectroscopy-based point-of-care sensors for the detection of the SARS-CoV-2 virus. This article also suggests future directions to address the technology's current limitations to move forward in this current pandemic and prepare for future outbreaks.
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Affiliation(s)
- Victor Ong
- Alfred E. Mann Department of Biomedical Engineering, Viterbi School of Engineering, University of Southern California, Los Angeles, CA 90089, USA
| | - Ali Soleimani
- Alfred E. Mann Department of Biomedical Engineering, Viterbi School of Engineering, University of Southern California, Los Angeles, CA 90089, USA
| | - Farbod Amirghasemi
- Alfred E. Mann Department of Biomedical Engineering, Viterbi School of Engineering, University of Southern California, Los Angeles, CA 90089, USA
| | - Sina Khazaee Nejad
- Alfred E. Mann Department of Biomedical Engineering, Viterbi School of Engineering, University of Southern California, Los Angeles, CA 90089, USA
| | - Mona Abdelmonem
- Alfred E. Mann Department of Biomedical Engineering, Viterbi School of Engineering, University of Southern California, Los Angeles, CA 90089, USA
| | - Meisam Razaviyayn
- Daniel J. Epstein Department of Industrial and Systems Engineering, Viterbi School of Engineering, University of Southern California, Los Angeles, CA 90089, USA
- Ming Hsieh Department of Electrical and Computer Engineering, Viterbi School of Engineering, University of Southern California, Los Angeles, CA 90089, USA
- Department of Computer Science, Viterbi School of Engineering, University of Southern California, Los Angeles, CA 90089, USA
| | - Parisa Hosseinzadeh
- Knight Campus Center Department of Bioengineering, University of Oregon, Eugene, OR 97403, USA
| | - Lucio Comai
- Department of Molecular Microbiology and Immunology, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA
| | - Maral P. S. Mousavi
- Alfred E. Mann Department of Biomedical Engineering, Viterbi School of Engineering, University of Southern California, Los Angeles, CA 90089, USA
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7
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Baccaro AL, Seki CC, Nishimura FG, Cordon LD, Carvalho LA, Gutz IG. Effectiveness of metal–EDTA-polluted water treatment and metal recovery at drop-casted films of TiO2 under UV-LED irradiation: a photoelectrochemical study. RESULTS IN CHEMISTRY 2023. [DOI: 10.1016/j.rechem.2023.100804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
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8
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Electrochemical Biosensor for the Determination of Specific Antibodies against SARS-CoV-2 Spike Protein. Int J Mol Sci 2022; 24:ijms24010718. [PMID: 36614164 PMCID: PMC9821011 DOI: 10.3390/ijms24010718] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 12/17/2022] [Accepted: 12/21/2022] [Indexed: 01/03/2023] Open
Abstract
In this article, we report the development of an electrochemical biosensor for the determination of the SARS-CoV-2 spike protein (rS). A gold disc electrode was electrochemically modified to form the nanocrystalline gold structure on the surface. Then, it was further altered by a self-assembling monolayer based on a mixture of two alkane thiols: 11-mercaptoundecanoic acid (11-MUA) and 6-mercapto-1-hexanol (6-MCOH) (SAMmix). After activating carboxyl groups using a N-(3-dimethylaminopropyl)-N'-ethyl-carbodiimide hydrochloride and N-hydroxysuccinimide mixture, the rS protein was covalently immobilized on the top of the SAMmix. This electrode was used to design an electrochemical sensor suitable for determining antibodies against the SARS-CoV-2 rS protein (anti-rS). We assessed the association between the immobilized rS protein and the anti-rS antibody present in the blood serum of a SARS-CoV-2 infected person using three electrochemical methods: cyclic voltammetry, differential pulse voltammetry, and potential pulsed amperometry. The results demonstrated that differential pulse voltammetry and potential pulsed amperometry measurements displayed similar sensitivity. In contrast, the measurements performed by cyclic voltammetry suggest that this method is the most sensitive out of the three methods applied in this research.
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9
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Fakhr MH, Beshchasna N, Balakin S, Carrasco IL, Heitbrink A, Göhler F, Rösch N, Opitz J. Cleaning of LTCC, PEN, and PCB Au electrodes towards reliable electrochemical measurements. Sci Rep 2022; 12:20431. [PMID: 36443326 PMCID: PMC9705539 DOI: 10.1038/s41598-022-23395-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Accepted: 10/31/2022] [Indexed: 11/29/2022] Open
Abstract
Surface cleaning of the working electrode has a key role in improved electrochemical and physicochemical properties of the biosensors. Herein, chemical oxidation in piranha, chemical cleaning in potassium hydroxide-hydrogen peroxide, combined (electro-) chemical alkaline treatment, and potential cycling in sulfuric acid were applied to gold finish electrode surfaces deposited onto three different substrates; low temperature co-fired ceramics (LTCC), polyethylene naphthalate (PEN), and polyimide (PI), using three different deposition technologies; screen printing, inkjet printing, and electroplating (printed circuit board technology, PCB) accordingly. The effects of the (electro-) chemical treatments on the gold content and electrochemical responses of LTCC, PEN, and PCB applicable for aptamer-based sensors are discussed. In order to assess the gold surface and to compare the efficiency of the respective cleaning procedures; cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM) were employed. LTCC sensors electrochemically cycled in sulfuric acid resulted in the most gold content on the electrode surface, the lowest peak potential difference, and the highest charge transfer ability. While, for PEN, the highest elemental gold and the lowest peak-to-peak separation were achieved by a combined (electro-) chemical alkaline treatment. Gold content and electrochemical characteristics on the PCB surface with extremely thin gold layer could be slightly optimized with the chemical cleaning in KOH + H2O2. The proposed cleaning procedures might be generally applied to various kinds of Au electrodes fabricated with the same conditions comparable with those are introduced in this study.
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Affiliation(s)
- Mahan Hosseinzadeh Fakhr
- grid.461622.50000 0001 2034 8950Fraunhofer Institute for Ceramic Technologies and Systems IKTS, 01109 Dresden, Germany ,grid.6810.f0000 0001 2294 5505Institute of Physics, Chemnitz University of Technology, 09126 Chemnitz, Germany
| | - Natalia Beshchasna
- grid.461622.50000 0001 2034 8950Fraunhofer Institute for Ceramic Technologies and Systems IKTS, 01109 Dresden, Germany
| | - Sascha Balakin
- grid.461622.50000 0001 2034 8950Fraunhofer Institute for Ceramic Technologies and Systems IKTS, 01109 Dresden, Germany
| | - Ivan Lopez Carrasco
- grid.461622.50000 0001 2034 8950Fraunhofer Institute for Ceramic Technologies and Systems IKTS, 01109 Dresden, Germany ,grid.4488.00000 0001 2111 7257Max Bergmann Center of Biomaterials (MBC), Technical University of Dresden, 01069 Dresden, Germany
| | - Alexander Heitbrink
- grid.461622.50000 0001 2034 8950Fraunhofer Institute for Ceramic Technologies and Systems IKTS, 01109 Dresden, Germany ,grid.4488.00000 0001 2111 7257Max Bergmann Center of Biomaterials (MBC), Technical University of Dresden, 01069 Dresden, Germany ,InnoME GmbH, 32339 Espelkamp, Germany
| | - Fabian Göhler
- grid.6810.f0000 0001 2294 5505Institute of Physics, Chemnitz University of Technology, 09126 Chemnitz, Germany
| | - Niels Rösch
- grid.6810.f0000 0001 2294 5505Institute of Physics, Chemnitz University of Technology, 09126 Chemnitz, Germany
| | - Joerg Opitz
- grid.461622.50000 0001 2034 8950Fraunhofer Institute for Ceramic Technologies and Systems IKTS, 01109 Dresden, Germany ,grid.4488.00000 0001 2111 7257Max Bergmann Center of Biomaterials (MBC), Technical University of Dresden, 01069 Dresden, Germany
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10
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Lin S, Cheng X, Zhu J, Wang B, Jelinek D, Zhao Y, Wu TY, Horrillo A, Tan J, Yeung J, Yan W, Forman S, Coller HA, Milla C, Emaminejad S. Wearable microneedle-based electrochemical aptamer biosensing for precision dosing of drugs with narrow therapeutic windows. SCIENCE ADVANCES 2022; 8:eabq4539. [PMID: 36149955 PMCID: PMC9506728 DOI: 10.1126/sciadv.abq4539] [Citation(s) in RCA: 49] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 08/09/2022] [Indexed: 05/31/2023]
Abstract
Therapeutic drug monitoring is essential for dosing pharmaceuticals with narrow therapeutic windows. Nevertheless, standard methods are imprecise and involve invasive/resource-intensive procedures with long turnaround times. Overcoming these limitations, we present a microneedle-based electrochemical aptamer biosensing patch (μNEAB-patch) that minimally invasively probes the interstitial fluid (ISF) and renders correlated, continuous, and real-time measurements of the circulating drugs' pharmacokinetics. The μNEAB-patch is created following an introduced low-cost fabrication scheme, which transforms a shortened clinical-grade needle into a high-quality gold nanoparticle-based substrate for robust aptamer immobilization and efficient electrochemical signal retrieval. This enables the reliable in vivo detection of a wide library of ISF analytes-especially those with nonexistent natural recognition elements. Accordingly, we developed μNEABs targeting various drugs, including antibiotics with narrow therapeutic windows (tobramycin and vancomycin). Through in vivo animal studies, we demonstrated the strong correlation between the ISF/circulating drug levels and the device's potential clinical use for timely prediction of total drug exposure.
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Affiliation(s)
- Shuyu Lin
- Interconnected and Integrated Bioelectronics Lab (IBL), University of California, Los Angeles, Los Angeles, CA, USA
- Department of Electrical and Computer Engineering, University of California, Los Angeles, Los Angeles, CA, USA
| | - Xuanbing Cheng
- Interconnected and Integrated Bioelectronics Lab (IBL), University of California, Los Angeles, Los Angeles, CA, USA
- Department of Electrical and Computer Engineering, University of California, Los Angeles, Los Angeles, CA, USA
- Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, CA, USA
| | - Jialun Zhu
- Interconnected and Integrated Bioelectronics Lab (IBL), University of California, Los Angeles, Los Angeles, CA, USA
- Department of Electrical and Computer Engineering, University of California, Los Angeles, Los Angeles, CA, USA
- Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, CA, USA
| | - Bo Wang
- Interconnected and Integrated Bioelectronics Lab (IBL), University of California, Los Angeles, Los Angeles, CA, USA
- Department of Electrical and Computer Engineering, University of California, Los Angeles, Los Angeles, CA, USA
| | - David Jelinek
- Department of Molecular, Cell and Developmental Biology, University of California, Los Angeles, Los Angeles, CA, USA
- Weintraub Center for Reconstructive Biotechnology, School of Dentistry, University of California, Los Angeles, Los Angeles, CA, USA
| | - Yichao Zhao
- Interconnected and Integrated Bioelectronics Lab (IBL), University of California, Los Angeles, Los Angeles, CA, USA
- Department of Electrical and Computer Engineering, University of California, Los Angeles, Los Angeles, CA, USA
- Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, CA, USA
| | - Tsung-Yu Wu
- Interconnected and Integrated Bioelectronics Lab (IBL), University of California, Los Angeles, Los Angeles, CA, USA
- Department of Electrical and Computer Engineering, University of California, Los Angeles, Los Angeles, CA, USA
- Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, CA, USA
| | - Abraham Horrillo
- Department of Molecular, Cell and Developmental Biology, University of California, Los Angeles, Los Angeles, CA, USA
| | - Jiawei Tan
- Interconnected and Integrated Bioelectronics Lab (IBL), University of California, Los Angeles, Los Angeles, CA, USA
- Department of Electrical and Computer Engineering, University of California, Los Angeles, Los Angeles, CA, USA
- Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, CA, USA
| | - Justin Yeung
- Interconnected and Integrated Bioelectronics Lab (IBL), University of California, Los Angeles, Los Angeles, CA, USA
- Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, CA, USA
| | - Wenzhong Yan
- Department of Mechanical and Aerospace Engineering, University of California, Los Angeles, Los Angeles, CA, USA
| | - Sarah Forman
- Interconnected and Integrated Bioelectronics Lab (IBL), University of California, Los Angeles, Los Angeles, CA, USA
- Department of Molecular, Cell and Developmental Biology, University of California, Los Angeles, Los Angeles, CA, USA
| | - Hilary A. Coller
- Department of Molecular, Cell and Developmental Biology, University of California, Los Angeles, Los Angeles, CA, USA
- Department of Biological Chemistry, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA
- Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA, USA
| | - Carlos Milla
- The Stanford Cystic Fibrosis Center, Center for Excellence in Pulmonary Biology, Stanford School of Medicine, Stanford, CA, USA
| | - Sam Emaminejad
- Interconnected and Integrated Bioelectronics Lab (IBL), University of California, Los Angeles, Los Angeles, CA, USA
- Department of Electrical and Computer Engineering, University of California, Los Angeles, Los Angeles, CA, USA
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, USA
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11
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Wu Y, Tehrani F, Teymourian H, Mack J, Shaver A, Reynoso M, Kavner J, Huang N, Furmidge A, Duvvuri A, Nie Y, Laffel L, Doyle FJ, Patti ME, Dassau E, Wang J, Arroyo-Currás N. Microneedle Aptamer-Based Sensors for Continuous, Real-Time Therapeutic Drug Monitoring. Anal Chem 2022; 94:8335-8345. [PMID: 35653647 PMCID: PMC9202557 DOI: 10.1021/acs.analchem.2c00829] [Citation(s) in RCA: 56] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Accepted: 05/19/2022] [Indexed: 12/21/2022]
Abstract
The ability to continuously monitor the concentration of specific molecules in the body is a long-sought goal of biomedical research. For this purpose, interstitial fluid (ISF) was proposed as the ideal target biofluid because its composition can rapidly equilibrate with that of systemic blood, allowing the assessment of molecular concentrations that reflect full-body physiology. In the past, continuous monitoring in ISF was enabled by microneedle sensor arrays. Yet, benchmark microneedle sensors can only detect molecules that undergo redox reactions, which limits the ability to sense metabolites, biomarkers, and therapeutics that are not redox-active. To overcome this barrier, here, we expand the scope of these devices by demonstrating the first use of microneedle-supported electrochemical, aptamer-based (E-AB) sensors. This platform achieves molecular recognition based on affinity interactions, vastly expanding the scope of molecules that can be sensed. We report the fabrication of microneedle E-AB sensor arrays and a method to regenerate them for multiple uses. In addition, we demonstrate continuous molecular measurements using these sensors in flow systems in vitro using single and multiplexed microneedle array configurations. Translation of the platform to in vivo measurements is possible as we demonstrate with a first E-AB measurement in the ISF of a rodent. The encouraging results reported in this work should serve as the basis for future translation of microneedle E-AB sensor arrays to biomedical research in preclinical animal models.
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Affiliation(s)
- Yao Wu
- Department
of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland 21202, United States
| | - Farshad Tehrani
- Department
of Nanoengineering, University of California
San Diego, La Jolla, California 92093, United States
| | - Hazhir Teymourian
- Department
of Nanoengineering, University of California
San Diego, La Jolla, California 92093, United States
| | - John Mack
- Biochemistry,
Cellular and Molecular Biology, Johns Hopkins
University School of Medicine, Baltimore, Maryland 21202, United States
| | - Alexander Shaver
- Department
of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland 21202, United States
| | - Maria Reynoso
- Department
of Nanoengineering, University of California
San Diego, La Jolla, California 92093, United States
| | - Jonathan Kavner
- Department
of Nanoengineering, University of California
San Diego, La Jolla, California 92093, United States
| | - Nickey Huang
- Department
of Nanoengineering, University of California
San Diego, La Jolla, California 92093, United States
| | - Allison Furmidge
- Department
of Nanoengineering, University of California
San Diego, La Jolla, California 92093, United States
| | - Andrés Duvvuri
- Department
of Nanoengineering, University of California
San Diego, La Jolla, California 92093, United States
| | - Yuhang Nie
- Department
of Nanoengineering, University of California
San Diego, La Jolla, California 92093, United States
| | - Lori
M. Laffel
- Joslin
Diabetes Center, Harvard Medical School, Boston, Massachusetts 02215, United States
| | - Francis J. Doyle
- Harvard
John A. Paulson School of Engineering and Applied Sciences, Harvard University, Allston, Massachusetts 02134, United States
| | - Mary-Elizabeth Patti
- Joslin
Diabetes Center, Harvard Medical School, Boston, Massachusetts 02215, United States
| | - Eyal Dassau
- Harvard
John A. Paulson School of Engineering and Applied Sciences, Harvard University, Allston, Massachusetts 02134, United States
| | - Joseph Wang
- Department
of Nanoengineering, University of California
San Diego, La Jolla, California 92093, United States
| | - Netzahualcóyotl Arroyo-Currás
- Department
of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland 21202, United States
- Biochemistry,
Cellular and Molecular Biology, Johns Hopkins
University School of Medicine, Baltimore, Maryland 21202, United States
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12
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Silva M, Simoes R, Leao A, Lapa R, Rascon J, Cesarino I. Competitive host‐guest electrochemical detection of ivermectin drug using a β‐cyclodextrin/graphene‐based electrode. ELECTROANAL 2022. [DOI: 10.1002/elan.202100649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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13
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Le HTN, Phan LMT, Cho S. Removal of Thiol-SAM on a Gold Surface for Re-Use of an Interdigitated Chain-Shaped Electrode. MATERIALS 2022; 15:ma15062218. [PMID: 35329670 PMCID: PMC8950519 DOI: 10.3390/ma15062218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 03/07/2022] [Accepted: 03/15/2022] [Indexed: 11/16/2022]
Abstract
The self-assembled monolayer (SAM) is the most common organic assembly utilized for the formation of the monolayers of alkane-thiolates on gold electrode, resulting in a wide range of applications for the modified SAM on gold in various research areas. This study examined the desorption of a SAM that was developed on the gold surface of an interdigitated chain-shaped electrode (the ICE, a unique electrode design, was fabricated by our group) with the goal of determining the most efficient strategy of SAM removal for the ICE to be re-used. A simple and proficient solution-based cleaning procedure was applied for the removal of a SAM on the gold surface of the ICE by using a sodium borohydride solution within short-term treatment, resulting in efficiency for the recovery of the originally electrochemical characteristic of ICE of 90.3%. The re-use of ICE after the removal process was confirmed by the successful re-deposition of a SAM onto the electrode surface, resulting in the high efficiency percentage of 90.1% for the reusability of ICE with the SAM modification. Electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV) were used as tools to investigate the changes in the electrode interface at each stage of the SAM removal and the electrode recycling. X-ray photoelectron spectroscopy and Fourier-transform infrared spectroscopy were employed, being powerful spectrum techniques, for the characterization of the bonding structure and chemical state of the bare ICE and the modified ICE at each treatment step. Based on the comprehensive discussion of analytical chemistry from the obtained EIS and CV data in this study, we confirmed and proved the effectiveness of this promising method for the removal of a SAM from the ICE and the re-use of ICE in the field of material deposition, with the aims of saving money, improving experimental handling, and protecting the environment.
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Affiliation(s)
- Hien T. Ngoc Le
- Department of Electronic Engineering, Gachon University, Seongnam-si 13120, Korea;
| | - Le Minh Tu Phan
- School of Medicine and Pharmacy, The University of Danang, Danang 550000, Vietnam;
| | - Sungbo Cho
- Department of Electronic Engineering, Gachon University, Seongnam-si 13120, Korea;
- Department of Health Sciences and Technology, GAIHST, Gachon University, Incheon 21999, Korea
- Correspondence: ; Tel.: +82-(31)-750-5321
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14
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Electrochemical and X-ray Photoelectron Spectroscopy Surface Characterization of Interchain-Driven Self-Assembled Monolayer (SAM) Reorganization. NANOMATERIALS 2022; 12:nano12050867. [PMID: 35269355 PMCID: PMC8912756 DOI: 10.3390/nano12050867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 02/23/2022] [Accepted: 03/02/2022] [Indexed: 11/16/2022]
Abstract
Herein, we report a combined strategy encompassing electrochemical and x-ray photoelectron spectroscopy (XPS) experiments to investigate self-assembled monolayer (SAM) conformational reorganization onto an electrode surface due to the application of an electrical field. In particular, 3-mercaptopriopionic acid SAM (3MPA SAM) modified gold electrodes are activated with a 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide (EDC) and N-hydroxysulfosuccinimide (NHSS) (EDC-NHSS) mixture by shortening the activation time, from 2 h to 15/20 min, labelled as Protocol-A, -B and -C, respectively. This step, later followed by a deactivation process with ethanolamine (EA), plays a key role in the reaction yields (formation of N-(2-hydroxyethyl)-3-mercaptopropanamide, NMPA) but also in the conformational rearrangement observed during the application of the electrical field. This study aims at explaining the high performance (i.e., single-molecule detection at a large electrode interface) of bioelectronic devices, where the 3MPA-based SAM structure is pivotal in achieving extremely high sensing performance levels due to its interchain interaction. Cyclic voltammetry (CV) experiments performed in K4Fe(CN)6:K3Fe(CN)6 for 3MPA SAMs that are activated/deactivated show similar trends of anodic peak current (IA) over time, mainly related to the presence of interchain hydrogen bonds, driving the conformational rearrangements (tightening of SAMs structure) while applying an electrical field. In addition, XPS analysis allows correlation of the deactivation yield with electrochemical data (conformational rearrangements), identifying the best protocol in terms of high reaction yield, mainly related to the shorter reaction time, and not triggering any side reactions. Finally, Protocol-C’s SAM surface coverage, determined by CV in H2SO4 and differential pulse voltammetry (DPV) in NaOH, was 1.29 * 1013 molecules cm−2, being similar to the bioreceptor surface coverage in single-molecule detection at a large electrode interface.
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15
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Shabalina AV, Sharko DO, Glazyrin YE, Bolshevich EA, Dubinina OV, Kim AM, Veprintsev DV, Lapin IN, Zamay GS, Krat AV, Zamay SS, Svetlichnyi VA, Kichkailo AS, Berezovski MV. Development of Electrochemical Aptasensor for Lung Cancer Diagnostics in Human Blood. SENSORS 2021; 21:s21237851. [PMID: 34883850 PMCID: PMC8659852 DOI: 10.3390/s21237851] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Revised: 11/12/2021] [Accepted: 11/18/2021] [Indexed: 02/04/2023]
Abstract
We describe the preparation and characterization of an aptamer-based electrochemical sensor to lung cancer tumor markers in human blood. The highly reproducible aptamer sensing layer with a high density (up to 70% coverage) on the gold electrode was made. Electrochemical methods and confocal laser scanning microscopy were used to study the stability of the aptamer layer structure and binding ability. A new blocking agent, a thiolated oligonucleotide with an unrelated sequence, was applied to fill the aptamer layer’s defects. Electrochemical aptasensor signal processing was enhanced using deep learning and computer simulation of the experimental data array. It was found that the combinations (coupled and tripled) of cyclic voltammogram features allowed for distinguishing between the samples from lung cancer patients and healthy candidates with a mean accuracy of 0.73. The capacitive component from the non-Faradic electrochemical impedance spectroscopy data indicated the tumor marker’s presence in a sample. These findings allowed for the creation of highly informative aptasensors for early lung cancer diagnostics.
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Affiliation(s)
- Anastasiia V. Shabalina
- Siberian Physical-Technical Institute, Tomsk State University, 634050 Tomsk, Russia; (A.V.S.); (D.O.S.); (E.A.B.); (O.V.D.); (A.M.K.); (I.N.L.); (V.A.S.)
| | - Darya O. Sharko
- Siberian Physical-Technical Institute, Tomsk State University, 634050 Tomsk, Russia; (A.V.S.); (D.O.S.); (E.A.B.); (O.V.D.); (A.M.K.); (I.N.L.); (V.A.S.)
| | - Yury E. Glazyrin
- Federal Research Center, Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Science, 660036 Krasnoyarsk, Russia; (Y.E.G.); (D.V.V.); (G.S.Z.); (S.S.Z.)
- Laboratory of Biomolecular and Medical Technologies, Krasnoyarsk State Medical University Named after Prof. V.F. Voyno-Yasenetsky, 660022 Krasnoyarsk, Russia;
| | - Elena A. Bolshevich
- Siberian Physical-Technical Institute, Tomsk State University, 634050 Tomsk, Russia; (A.V.S.); (D.O.S.); (E.A.B.); (O.V.D.); (A.M.K.); (I.N.L.); (V.A.S.)
| | - Oksana V. Dubinina
- Siberian Physical-Technical Institute, Tomsk State University, 634050 Tomsk, Russia; (A.V.S.); (D.O.S.); (E.A.B.); (O.V.D.); (A.M.K.); (I.N.L.); (V.A.S.)
| | - Anastasiia M. Kim
- Siberian Physical-Technical Institute, Tomsk State University, 634050 Tomsk, Russia; (A.V.S.); (D.O.S.); (E.A.B.); (O.V.D.); (A.M.K.); (I.N.L.); (V.A.S.)
| | - Dmitry V. Veprintsev
- Federal Research Center, Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Science, 660036 Krasnoyarsk, Russia; (Y.E.G.); (D.V.V.); (G.S.Z.); (S.S.Z.)
| | - Ivan N. Lapin
- Siberian Physical-Technical Institute, Tomsk State University, 634050 Tomsk, Russia; (A.V.S.); (D.O.S.); (E.A.B.); (O.V.D.); (A.M.K.); (I.N.L.); (V.A.S.)
| | - Galina S. Zamay
- Federal Research Center, Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Science, 660036 Krasnoyarsk, Russia; (Y.E.G.); (D.V.V.); (G.S.Z.); (S.S.Z.)
- Laboratory of Biomolecular and Medical Technologies, Krasnoyarsk State Medical University Named after Prof. V.F. Voyno-Yasenetsky, 660022 Krasnoyarsk, Russia;
| | - Alexey V. Krat
- Laboratory of Biomolecular and Medical Technologies, Krasnoyarsk State Medical University Named after Prof. V.F. Voyno-Yasenetsky, 660022 Krasnoyarsk, Russia;
- Krasnoyarsk Regional Clinical Cancer Center Named after A.I. Kryzhanovsky, 660133 Krasnoyarsk, Russia
| | - Sergey S. Zamay
- Federal Research Center, Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Science, 660036 Krasnoyarsk, Russia; (Y.E.G.); (D.V.V.); (G.S.Z.); (S.S.Z.)
- Laboratory of Biomolecular and Medical Technologies, Krasnoyarsk State Medical University Named after Prof. V.F. Voyno-Yasenetsky, 660022 Krasnoyarsk, Russia;
| | - Valery A. Svetlichnyi
- Siberian Physical-Technical Institute, Tomsk State University, 634050 Tomsk, Russia; (A.V.S.); (D.O.S.); (E.A.B.); (O.V.D.); (A.M.K.); (I.N.L.); (V.A.S.)
| | - Anna S. Kichkailo
- Federal Research Center, Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Science, 660036 Krasnoyarsk, Russia; (Y.E.G.); (D.V.V.); (G.S.Z.); (S.S.Z.)
- Laboratory of Biomolecular and Medical Technologies, Krasnoyarsk State Medical University Named after Prof. V.F. Voyno-Yasenetsky, 660022 Krasnoyarsk, Russia;
- Correspondence: (A.S.K.); (M.V.B.)
| | - Maxim V. Berezovski
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, AB K1N 6N5, Canada
- Correspondence: (A.S.K.); (M.V.B.)
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16
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Li N, Chen J, Huang X, Guo H, Li X, Fan A, Shao H. Competition of ion-pair during the transition from hydrogen bonding to electrostatic interaction on self-assembled monolayer. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.139310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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17
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Rinaldi C, Corrigan DK, Dennany L, Jarrett RF, Lake A, Baker MJ. Development of an Electrochemical CCL17/TARC Biosensor toward Rapid Triage and Monitoring of Classic Hodgkin Lymphoma. ACS Sens 2021; 6:3262-3272. [PMID: 34478275 DOI: 10.1021/acssensors.1c00972] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A point-of-care blood test for the detection of an emerging biomarker, CCL17/TARC, could prove transformative for the clinical management of classic Hodgkin lymphoma (cHL). Primary care diagnosis is challenging due to nonspecific clinical presentation and lack of a diagnostic test, leading to significant diagnostic delays. Treatment monitoring encounters false-positive and negative results, leading to avoidable chemotherapy toxicity, or undertreatment, impacting patient morbidity and mortality. Here, we present an amperometric CCL17/TARC immunosensor, based on the utilization of a thiolated heterobifunctional cross-linker and sandwich antibody assay, to facilitate novel primary care triage and chemotherapy monitoring strategies for cHL. The immunosensor shows excellent analytical performance for clinical testing; linearity (R2 = 0.986), detection limit (194 pg/mL), and lower and upper limits of quantitation (387-50 000 pg/mL). The biosensor differentiated all 42 newly diagnosed cHL patients from healthy volunteers, based on serum CCL17/TARC concentration, using blood samples collected prior to treatment intervention. The immunosensor also discriminated between paired blood samples of all seven cHL patients, respectively, collected prior to treatment and during chemotherapy, attributed to the decrease in serum CCL17/TARC concentration following chemotherapy response. Overall, we have shown, for the first time, the potential of an electrochemical CCL17/TARC biosensor for primary care triage and chemotherapy monitoring for cHL, which would have positive clinical and psychosocial implications for patients, while streamlining current healthcare pathways.
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Affiliation(s)
- Christopher Rinaldi
- WestCHEM, Department of Pure and Applied Chemistry, Technology and Innovation Centre, University of Strathclyde, 99 George Street, Glasgow G1 1RD, U.K
| | - Damion K. Corrigan
- Department of Biomedical Engineering, University of Strathclyde, 40 George Street, Glasgow G1 1QE, U.K
| | - Lynn Dennany
- WestCHEM, Department of Pure and Applied Chemistry, Technology and Innovation Centre, University of Strathclyde, 99 George Street, Glasgow G1 1RD, U.K
| | - Ruth F. Jarrett
- MRC-University of Glasgow Centre for Virus Research, 464 Bearsden Road, Bearsden, Glasgow G61 1QH, U.K
| | - Annette Lake
- MRC-University of Glasgow Centre for Virus Research, 464 Bearsden Road, Bearsden, Glasgow G61 1QH, U.K
| | - Matthew J. Baker
- DXCOVER Ltd., University of Strathclyde, Technology and Innovation Centre, 99 George Street, Glasgow G1 1RD, U.K
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18
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Thiruvottriyur Shanmugam S, Trashin S, De Wael K. Gold-sputtered microelectrodes with built-in gold reference and counter electrodes for electrochemical DNA detection. Analyst 2021; 145:7646-7653. [PMID: 32966365 DOI: 10.1039/d0an01387k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Gold-sputtered microelectrodes with built-in gold reference and counter electrodes represent a promising platform for the development of disposable DNA sensors. Pretreating gold electrode surfaces and immobilization of DNA thereon is commonly employed in biosensing applications. However, with no scientific or practical guidelines to prepare a DNA sensor using these miniature gold-sputtered microelectrodes, cleaning and immobilization steps need to be systematically optimized and updated. In this work, we present efficient cleaning and modification of miniaturized gold-sputtered microelectrodes with thiolated DNA probes for DNA detection. Additional discussions on subtleties and nuances involved at each stage of pretreating and modifying gold-sputtered microelectrodes are included to present a robust, well-founded protocol. It was evident that the insights on cleaning polycrystalline gold disk electrodes with a benchmark electrode surface for DNA sensors, cannot be transferred to clean these miniature gold-sputtered microelectrodes. Therefore, a comparison between five different cleaning protocols was made to find the optimal one for gold-sputtered microelectrodes. Additionally, two principally different immobilization techniques for gold-sputtered microelectrode modification with thiolated ssDNA were compared i.e., immobilization through passive chemisorption and potential perturbation were compared in terms of thiol-specific attachment and thiol-unspecific adsorption through nitrogenous bases. The hybridization performance of these prepared electrodes was characterized by their sensitive complementary DNA capturing ability, detected by a standard alkaline phosphatase assay. Immobilization through passive chemisorption proved to be efficient in capturing the complementary target DNA with a detection limit of 0.14 nM and sensitivity of 9.38 A M-1 cm2. In general, this work presents a comprehensive understanding of cleaning, modification and performance of gold-sputtered microelectrodes with built-in gold reference and counter electrodes for both fundamental investigations and practical DNA sensing applications.
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19
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Graphite-polystyrene composite with enhanced electrochemical and electroanalytical performance. Talanta 2021; 223:121780. [DOI: 10.1016/j.talanta.2020.121780] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 10/11/2020] [Accepted: 10/12/2020] [Indexed: 11/23/2022]
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20
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The importance of the assembling of DNA strands on the performance of electrochemical genosensors. Microchem J 2020. [DOI: 10.1016/j.microc.2020.105358] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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21
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Label-free capacitive assaying of biomarkers for molecular diagnostics. Nat Protoc 2020; 15:3879-3893. [PMID: 33106679 DOI: 10.1038/s41596-020-0390-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Accepted: 07/28/2020] [Indexed: 11/08/2022]
Abstract
The label-free analysis of biomarkers offers important advantages in developing point-of-care (PoC) biosensors. In contrast to label-based methodologies, such as ELISA, label-free analysis enables direct detection of targets without additional steps and labeled reagents. Nonetheless, label-free approaches require high sensitivity to detect the intrinsic features of a biomarker and low levels of nonspecific signals. Electrochemical capacitance, [Formula: see text], is a feature of electroactive nanoscale films that can be measured using electrochemical impedance spectroscopy. [Formula: see text] is promising as an electrochemical transducing signal for the development of high-sensitivity, reagentless and label-free molecular diagnostic assays. We used a proprietary ferrocene (Fc)-tagged peptide that is able to self-assemble onto gold electrodes (thicknesses <2 nm) to which any biological receptor can be coupled. When coupled with biological receptors (e.g., a monoclonal antibody), [Formula: see text] exhibited by the redox-tagged peptide changes as a function of the target concentration. We provide herein the steps for the qualitative and quantitative detection of dengue non-structural protein 1 (NS1) biomarker. Detection of NS1 can be used to diagnose dengue virus infection, which causes epidemics each year in tropical and subtropical regions of the world. Including the pre-treatment of the electrode surface, the analysis takes ~25 h. This time can be reduced to minutes if the electrode surface is fabricated separately, demonstrating that [Formula: see text] is promising for PoC applications. We hope this protocol will serve as a reference point for researchers and companies that intend to further develop capacitive devices for molecular diagnostic assays.
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22
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Banasiak A, Colleran J. Determination of Integrity, Stability and Density of the DNA Layers Immobilised at Glassy Carbon and Gold Electrodes Using Ferrocyanide. ELECTROANAL 2020. [DOI: 10.1002/elan.202060077] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Anna Banasiak
- Applied Electrochemistry Group Technological University Dublin, FOCAS Institute Camden Row Dublin 8 D08 CKP1 Ireland
| | - John Colleran
- Applied Electrochemistry Group Technological University Dublin, FOCAS Institute Camden Row Dublin 8 D08 CKP1 Ireland
- School of Chemical and Pharmaceutical Sciences Technological University Dublin, City Campus – Kevin Street Dublin 8 D08 NF82 Ireland
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23
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Nan MN, Bi Y, Xue HL, Long HT, Xue SL, Pu LM, Prusky D. Modification performance and electrochemical characteristics of different groups of modified aptamers applied for label-free electrochemical impedimetric sensors. Food Chem 2020; 337:127761. [PMID: 32777565 DOI: 10.1016/j.foodchem.2020.127761] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Revised: 07/12/2020] [Accepted: 08/02/2020] [Indexed: 11/15/2022]
Abstract
Amino and thiolated aptamers are the main aptamers used to construct label-free electrochemical impedimetric aptasensors. In this study, the modification performance and electrochemical properties of amino aptamers and thiolated aptamers were studied in the construction of label-free impedimetric sensors. The results showed that the initial modification density of amino aptamers was higher than that of thiol aptamers. Aptamers can recognize and bind OTA to generate electrical signals. The higher the density of aptamer modification was, the better the electric signals were. If only considering the initial modification density, amino aptamers were more suitable for the preparation of aptasensors than thiolated aptamers. However, the modification density of the amino aptamer decreased with the prolonged immersion time in 1 mM HCl solution, which suggests that the stability of this sensor was poor. However, the thiolated aptamer maintained relatively constant density and could be reused. Thus, the thiolated aptasensor had a wide range and good reproducibility and stability for the determination of ochratoxin A (OTA). In addition, this study proved that gold nanoparticles play an important role in signal amplification by increasing the effective gold surface to fix more aptamers in the process of sensor preparation.
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Affiliation(s)
- Mi-Na Nan
- College of Science, Gansu Agricultural University, Lanzhou 730070, PR China; College of Horticulture, Gansu Agricultural University, Lanzhou 730070, PR China
| | - Yang Bi
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, PR China.
| | - Hua-Li Xue
- College of Science, Gansu Agricultural University, Lanzhou 730070, PR China.
| | - Hai-Tao Long
- College of Science, Gansu Agricultural University, Lanzhou 730070, PR China
| | - Su-Lin Xue
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, PR China
| | - Lu-Mei Pu
- College of Science, Gansu Agricultural University, Lanzhou 730070, PR China
| | - Dov Prusky
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, PR China; Department of Postharvest Science of Fresh Produce, the Volcani Center, Agricultural Research Organization, Bet Dagan 50250, Israel
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24
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Tiétcha GF, Mears LLE, Dworschak D, Roth M, Klüppel I, Valtiner M. Adsorption and Diffusion Moderated by Polycationic Polymers during Electrodeposition of Zinc. ACS APPLIED MATERIALS & INTERFACES 2020; 12:29928-29936. [PMID: 32469494 PMCID: PMC7467541 DOI: 10.1021/acsami.0c04263] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Electrodeposition of metals is relevant to much of materials research including catalysis, batteries, antifouling, and anticorrosion coatings. The sacrificial characteristics of zinc used as a protection for ferrous substrates is a central corrosion protection strategy used in automotive, aviation, and DIY industries. Zinc layers are often used for protection by application to a base metal in a hot dip galvanizing step; however, there is a significant interest in less energy and material intense electroplating strategies for zinc. At present, large-scale electroplating is mostly done from acidic zinc solutions, which contain potentially toxic and harmful additives. Alkaline electroplating of zinc offers a route to using environment-friendly green additives. Within the scope of this study an electrolyte containing soluble zinc hydroxide compound and a polyquarternium polymer as additive were studied during zinc deposition on gold model surfaces. Cyclic voltammetry experiments and in-situ electrochemical quartz crystal microbalance with dissipation (QCM-D) measurements were combined to provide a detailed understanding of fundamental steps that occur during polymer-mediated alkaline zinc electroplating. Data indicate that a zincate-loaded polymer can adsorb within the inner sphere of the electric double layer, which lowers the electrostatic penalty of the zincate approach to a negatively charged surface. X-ray photoelectron spectroscopy also supports the assertion that the zincate-loaded polymer is brought tightly to the surface. We also find an initial polymer depletion followed by an active deposition moderation via control of the zincate diffusion through the adsorbed polymer.
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Affiliation(s)
- Gastelle F. Tiétcha
- Institute of Applied
Physics, Vienna University of Technology, Wiedner Hauptstrasse 8-10, Vienna A-1040, Austria
- Dörken MKS-Systeme GmbH & Co. KG, Wetterstraße 58, D-58313 Herdecke, Germany
| | - Laura L. E. Mears
- Institute of Applied
Physics, Vienna University of Technology, Wiedner Hauptstrasse 8-10, Vienna A-1040, Austria
- Email
| | - Dominik Dworschak
- Institute of Applied
Physics, Vienna University of Technology, Wiedner Hauptstrasse 8-10, Vienna A-1040, Austria
| | - Marcel Roth
- Dörken MKS-Systeme GmbH & Co. KG, Wetterstraße 58, D-58313 Herdecke, Germany
| | - Ingo Klüppel
- Dörken MKS-Systeme GmbH & Co. KG, Wetterstraße 58, D-58313 Herdecke, Germany
- Email
| | - Markus Valtiner
- Institute of Applied
Physics, Vienna University of Technology, Wiedner Hauptstrasse 8-10, Vienna A-1040, Austria
- Email
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25
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Gil-González N, Benito-Lopez F, Castaño E, Morant-Miñana MC. Electrical and electrochemical properties of imidazolium and phosphonium-based pNIPAAM ionogels. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.136167] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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26
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Moro G, Barich H, Driesen K, Felipe Montiel N, Neven L, Domingues Mendonça C, Thiruvottriyur Shanmugam S, Daems E, De Wael K. Unlocking the full power of electrochemical fingerprinting for on-site sensing applications. Anal Bioanal Chem 2020; 412:5955-5968. [DOI: 10.1007/s00216-020-02584-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 02/28/2020] [Accepted: 03/09/2020] [Indexed: 02/07/2023]
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27
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MVF Sensor Enables Analysis of Nucleic Acids with Stable Secondary Structures. ELECTROANAL 2020. [DOI: 10.1002/elan.201900690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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28
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Alumina contamination through polishing and its effect on hydrogen evolution on gold electrodes. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.134915] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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29
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Kalimuthu P, Petitgenet M, Niks D, Dingwall S, Harmer JR, Hille R, Bernhardt PV. The oxidation-reduction and electrocatalytic properties of CO dehydrogenase from Oligotropha carboxidovorans. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2019; 1861:148118. [PMID: 31734195 DOI: 10.1016/j.bbabio.2019.148118] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 10/19/2019] [Accepted: 11/04/2019] [Indexed: 01/25/2023]
Abstract
CO dehydrogenase (CODH) from the Gram-negative bacterium Oligotropha carboxidovorans is a complex metalloenzyme from the xanthine oxidase family of molybdenum-containing enzymes, bearing a unique binuclear Mo-S-Cu active site in addition to two [2Fe-2S] clusters (FeSI and FeSII) and one equivalent of FAD. CODH catalyzes the oxidation of CO to CO2 with the concomitant introduction of reducing equivalents into the quinone pool, thus enabling the organism to utilize CO as sole source of both carbon and energy. Using a variety of EPR monitored redox titrations and spectroelectrochemistry, we report the redox potentials of CO dehydrogenase at pH 7.2 namely MoVI/V, MoV/IV, FeSI2+/+, FeSII2+/+, FAD/FADH and FADH/FADH-. These potentials are systematically higher than the corresponding potentials seen for other members of the xanthine oxidase family of Mo enzymes, and are in line with CODH utilising the higher potential quinone pool as an electron acceptor instead of pyridine nucleotides. CODH is also active when immobilised on a modified Au working electrode as demonstrated by cyclic voltammetry in the presence of CO.
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Affiliation(s)
- Palraj Kalimuthu
- School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane 4072, Australia
| | - Mélanie Petitgenet
- School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane 4072, Australia
| | - Dimitri Niks
- Department of Biochemistry, University of California, Riverside, CA 92521, USA
| | - Stephanie Dingwall
- Department of Biochemistry, University of California, Riverside, CA 92521, USA
| | - Jeffrey R Harmer
- Centre for Advanced Imaging, University of Queensland, Brisbane 4072, Australia
| | - Russ Hille
- Department of Biochemistry, University of California, Riverside, CA 92521, USA
| | - Paul V Bernhardt
- School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane 4072, Australia.
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30
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Mahanta A, Barman K, Jasimuddin S. Electrocatalytic Water Oxidation with Surface Anchored Mononuclear Manganese (II) ‐ Polypyridine Complexes. ChemistrySelect 2019. [DOI: 10.1002/slct.201902953] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Abhinandan Mahanta
- Department of ChemistrySchool of Physical SciencesAssam University, Silchar Assam- 788011 India
| | | | - Sk Jasimuddin
- Department of ChemistrySchool of Physical SciencesAssam University, Silchar Assam- 788011 India
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31
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Sekretaryova AN, Vagin MY, Volkov AV, Zozoulenko IV, Eriksson M. Evaluation of the Electrochemically Active Surface Area of Microelectrodes by Capacitive and Faradaic Currents. ChemElectroChem 2019. [DOI: 10.1002/celc.201900989] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Alina N. Sekretaryova
- Department of Physics, Chemistry and Biology Linköping University 58183 Linköping Sweden
- Department of Chemistry-Ångström Uppsala University Lägerhyddsvägen 1 75120 Uppsala Sweden
| | - Mikhail Yu. Vagin
- Department of Physics, Chemistry and Biology Linköping University 58183 Linköping Sweden
- Laboratory of Organic Electronics, Department of Science and Technology Linköping University 60174 Norrköping Sweden
| | - Anton V. Volkov
- Laboratory of Organic Electronics, Department of Science and Technology Linköping University 60174 Norrköping Sweden
| | - Igor V. Zozoulenko
- Laboratory of Organic Electronics, Department of Science and Technology Linköping University 60174 Norrköping Sweden
| | - Mats Eriksson
- Department of Physics, Chemistry and Biology Linköping University 58183 Linköping Sweden
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32
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Wu F, Lin Q, Wang L, Zou Y, Chen M, Xia Y, Lan J, Chen J. A DNA electrochemical biosensor based on triplex DNA-templated Ag/Pt nanoclusters for the detection of single-nucleotide variant. Talanta 2019; 207:120257. [PMID: 31594620 DOI: 10.1016/j.talanta.2019.120257] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2018] [Revised: 08/09/2019] [Accepted: 08/14/2019] [Indexed: 01/24/2023]
Abstract
A label-free electrochemical biosensor based on the triplex DNA-templated Ag/Pt bimetallic nanoclusters (triplex-Ag/PtNCs) and locked nucleic acid (LNA) modified X-shaped DNA probe was developed for the detection of single-nucleotide variant (SNV) related to β-thalassemia. Firstly, using triplex DNA as template, a site-specific and homogeneous Ag/PtNCs was prepared, which can effectively catalyze the 3,3,5,5-tetramethylbenzidine-H2O2 system and thus be employed as a signal reporter in the field of electrochemical biosensor. Secondly, the LNA modified X-shaped probes were assembled on gold electrode surface, which can only be dissociated in the presence of target, leading to the hybridization with triplex-Ag/PtNCs and significant increase of current signal. In this way, the detection limit for SNV of β-thalassemia was 0.8 fM with variant allele frequency (VAF) as low as 0.0001%.
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Affiliation(s)
- Fang Wu
- Department of Basic Chemistry, School of Pharmacy, Fujian Medical University, Fuzhou, Fujian Province, 350108, China
| | - Qian Lin
- Department of Pharmaceutical Analysis, School of Pharmacy, Fujian Medical University, Fuzhou, Fujian Province, 350108, China
| | - Liangliang Wang
- Department of Pharmaceutical Analysis, School of Pharmacy, Fujian Medical University, Fuzhou, Fujian Province, 350108, China
| | - Yulian Zou
- Institute of Immunotherapy, Fujian Medical University, Fuzhou, Fujian Province, 350108, China
| | - Mei Chen
- Department of Pharmaceutical Analysis, School of Pharmacy, Fujian Medical University, Fuzhou, Fujian Province, 350108, China
| | - Yaokun Xia
- Department of Pharmaceutical Analysis, School of Pharmacy, Fujian Medical University, Fuzhou, Fujian Province, 350108, China
| | - Jianming Lan
- Department of Basic Chemistry, School of Pharmacy, Fujian Medical University, Fuzhou, Fujian Province, 350108, China
| | - Jinghua Chen
- Department of Pharmaceutical Analysis, School of Pharmacy, Fujian Medical University, Fuzhou, Fujian Province, 350108, China.
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33
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Label-free electrochemical immunosensor for quick detection of anti-hantavirus antibody. J Electroanal Chem (Lausanne) 2019. [DOI: 10.1016/j.jelechem.2019.04.066] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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34
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Khadka R, Aydemir N, Carraher C, Hamiaux C, Baek P, Cheema J, Kralicek A, Travas‐Sejdic J. Investigating Electrochemical Stability and Reliability of Gold Electrode‐electrolyte Systems to Develop Bioelectronic Nose Using Insect Olfactory Receptor. ELECTROANAL 2019. [DOI: 10.1002/elan.201800733] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Roshan Khadka
- Polymer Electronic Research Centre, School of Chemical SciencesUniversity of Auckland Auckland New Zealand
- The MacDiarmid Institute for Advanced Materials and Nanotechnology Kelburn Parade Wellington 6140 New Zealand
| | - Nihan Aydemir
- Polymer Electronic Research Centre, School of Chemical SciencesUniversity of Auckland Auckland New Zealand
- The MacDiarmid Institute for Advanced Materials and Nanotechnology Kelburn Parade Wellington 6140 New Zealand
| | - Colm Carraher
- The New Zealand Institute for Plant & Food Research Limited Private Bag 92169 Auckland 1142 New Zealand
| | - Cyril Hamiaux
- The New Zealand Institute for Plant & Food Research Limited Private Bag 92169 Auckland 1142 New Zealand
| | - Paul Baek
- Polymer Electronic Research Centre, School of Chemical SciencesUniversity of Auckland Auckland New Zealand
- The MacDiarmid Institute for Advanced Materials and Nanotechnology Kelburn Parade Wellington 6140 New Zealand
| | - Jamal Cheema
- Polymer Electronic Research Centre, School of Chemical SciencesUniversity of Auckland Auckland New Zealand
- The MacDiarmid Institute for Advanced Materials and Nanotechnology Kelburn Parade Wellington 6140 New Zealand
| | - Andrew Kralicek
- The New Zealand Institute for Plant & Food Research Limited Private Bag 92169 Auckland 1142 New Zealand
| | - Jadranka Travas‐Sejdic
- Polymer Electronic Research Centre, School of Chemical SciencesUniversity of Auckland Auckland New Zealand
- The MacDiarmid Institute for Advanced Materials and Nanotechnology Kelburn Parade Wellington 6140 New Zealand
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35
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A label-free impedimetric aptasensor for the detection of Bacillus anthracis spore simulant. Biosens Bioelectron 2018; 126:640-646. [PMID: 30522085 DOI: 10.1016/j.bios.2018.11.017] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2018] [Revised: 11/12/2018] [Accepted: 11/13/2018] [Indexed: 12/27/2022]
Abstract
Herein, we report an impedimetric DNA-based aptamer sensor for a single-step detection of B. anthracis spore simulant (B. cereus spore). Specifically, we designed a miniaturized label-free aptasensor for B. cereus spores based on a gold screen-printed electrode functionalized with B. cereus spores-binding aptamer (BAS-6R). Several parameters were optimized to fabricate the aptasensor such as the concentration of DNA aptamer solution (0.5 µM), the time (48 h), the temperature (4 °C), and the pH (7.5) for aptamer immobilization on the working electrode surface. Once the aptasensor was developed, it was tested against B. cereus spores 14579 evaluating the effect of incubation time and MgCl2 concentration. Under the optimized conditions (incubation time equal to 3 h and absence of MgCl2), B. cereus spores 14579 were detected with a linear range between 104 CFU/ml and 5 × 106 CFU/ml and a detection limit of 3 × 103 CFU/ml. Furthermore, the study of selectivity toward B. cereus 11778, B. subtilis, Legionella pneumophila, and Salmonella Typhimurium has demonstrated the capability of this sensor to detect B. cereus spores, proving the suitability of the DNA-based sensing element combined with a portable instrument for a label-free measurement on site of B. anthracis spore simulant.
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36
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Treated Gold Screen-Printed Electrode as Disposable Platform for Label-Free Immunosensing of Salmonella Typhimurium. Electrocatalysis (N Y) 2018. [DOI: 10.1007/s12678-018-0491-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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37
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Zambrano G, Ruggiero E, Malafronte A, Chino M, Maglio O, Pavone V, Nastri F, Lombardi A. Artificial Heme Enzymes for the Construction of Gold-Based Biomaterials. Int J Mol Sci 2018; 19:E2896. [PMID: 30250002 PMCID: PMC6213134 DOI: 10.3390/ijms19102896] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 09/11/2018] [Accepted: 09/19/2018] [Indexed: 12/14/2022] Open
Abstract
Many efforts are continuously devoted to the construction of hybrid biomaterials for specific applications, by immobilizing enzymes on different types of surfaces and/or nanomaterials. In addition, advances in computational, molecular and structural biology have led to a variety of strategies for designing and engineering artificial enzymes with defined catalytic properties. Here, we report the conjugation of an artificial heme enzyme (MIMO) with lipoic acid (LA) as a building block for the development of gold-based biomaterials. We show that the artificial MIMO@LA can be successfully conjugated to gold nanoparticles or immobilized onto gold electrode surfaces, displaying quasi-reversible redox properties and peroxidase activity. The results of this work open interesting perspectives toward the development of new totally-synthetic catalytic biomaterials for application in biotechnology and biomedicine, expanding the range of the biomolecular component aside from traditional native enzymes.
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Affiliation(s)
- Gerardo Zambrano
- Department of Chemical Sciences, University of Napoli "Federico II" Via Cintia, 80126 Napoli, Italy.
| | - Emmanuel Ruggiero
- Department of Chemical Sciences, University of Napoli "Federico II" Via Cintia, 80126 Napoli, Italy.
| | - Anna Malafronte
- Department of Chemical Sciences, University of Napoli "Federico II" Via Cintia, 80126 Napoli, Italy.
| | - Marco Chino
- Department of Chemical Sciences, University of Napoli "Federico II" Via Cintia, 80126 Napoli, Italy.
| | - Ornella Maglio
- Department of Chemical Sciences, University of Napoli "Federico II" Via Cintia, 80126 Napoli, Italy.
- Istituto di Biostrutture e Bioimmagini, CNR, Via Mezzocannone 16, 80134 Napoli, Italy.
| | - Vincenzo Pavone
- Department of Chemical Sciences, University of Napoli "Federico II" Via Cintia, 80126 Napoli, Italy.
| | - Flavia Nastri
- Department of Chemical Sciences, University of Napoli "Federico II" Via Cintia, 80126 Napoli, Italy.
| | - Angela Lombardi
- Department of Chemical Sciences, University of Napoli "Federico II" Via Cintia, 80126 Napoli, Italy.
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38
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A universal and label-free impedimetric biosensing platform for discrimination of single nucleotide substitutions in long nucleic acid strands. Biosens Bioelectron 2018. [PMID: 29524915 DOI: 10.1016/j.bios.2018.02.059] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
We report a label-free universal biosensing platform for highly selective detection of long nucleic acid strands. The sensor consists of an electrode-immobilized universal stem-loop (USL) probe and two adaptor strands that form a 4J structure in the presence of a specific DNA/RNA analyte. The sensor was characterized by electrochemical impedance spectroscopy (EIS) using K3[Fe(CN)6]/K4[Fe(CN)6] redox couple in solution. An increase in charge transfer resistance (RCT) was observed upon 4J structure formation, the value of which depends on the analyte length. Cyclic voltammetry (CV) was used to further characterize the sensor and monitor the electrochemical reaction in conjunction with thickness measurements of the mixed DNA monolayer obtained using spectroscopic ellipsometry. In addition, the electron transfer was calculated at the electrode/electrolyte interface using a rotating disk electrode. Limits of detection in the femtomolar range were achieved for nucleic acid targets of different lengths (22 nt, 60 nt, 200 nt). The sensor produced only a background signal in the presence of single base mismatched analytes, even in hundred times excess in concentration. This label-free and highly selective biosensing platform is versatile and can be used for universal detection of nucleic acids of varied lengths which could revolutionize point of care diagnostics for applications such as bacterial or cancer screening.
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Ovchinnikova SN. The Effect of Adsorption of Ions of the Hexacyanoferrate(II)/(III) Redox Pair on Self-Assembly of Octanethiol at Its Adsorption from Aqueous Solutions on Gold Electrode. RUSS J ELECTROCHEM+ 2018. [DOI: 10.1134/s1023193517110106] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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40
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Melo AMA, Alexandre DL, Oliveira MRF, Furtado RF, Borges MF, Ribeiro PRV, Biswas A, Cheng HN, Alves CR, Figueiredo EAT. Optimization and characterization of a biosensor assembly for detection of Salmonella Typhimurium. J Solid State Electrochem 2017. [DOI: 10.1007/s10008-017-3767-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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41
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Makaraviciute A, Xu X, Nyholm L, Zhang Z. Systematic Approach to the Development of Microfabricated Biosensors: Relationship between Gold Surface Pretreatment and Thiolated Molecule Binding. ACS APPLIED MATERIALS & INTERFACES 2017; 9:26610-26621. [PMID: 28726367 DOI: 10.1021/acsami.7b08581] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Despite the increasing popularity of microfabricated biosensors due to advances in technologic and surface functionalization strategies, their successful implementation is partially inhibited by the lack of consistency in their analytical characteristics. One of the main causes for the discrepancies is the absence of a systematic and comprehensive approach to surface functionalization. In this article microfabricated gold electrodes aimed at biosensor development have been systematically characterized in terms of surface pretreatment, thiolated molecule binding, and reproducibility by means of X-ray photoelectron scattering (XPS) and cyclic voltammetry (CV). It has been shown that after SU-8 photolithography gold surfaces were markedly contaminated, which decreased the effective surface area and surface coverage of a model molecule mercaptohexanol (MCH). Three surface pretreatment methods compatible with microfabricated devices were compared. The investigated methods were (i) cyclic voltammetry in dilute H2SO4, (ii) gentle basic piranha followed by linear sweep voltammetry in dilute KOH, and (iii) oxygen plasma treatment followed by incubation in ethanol. It was shown that all three methods significantly decreased the contamination and increased MCH surface coverage. Most importantly, it was also revealed that surface pretreatments may induce structural changes to the gold surfaces. Accordingly, these alterations influence the characteristics of MCH functionalization.
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Affiliation(s)
- Asta Makaraviciute
- Division of Solid-State Electronics, Department of Engineering Sciences, The Ångström Laboratory, Uppsala University , P.O. Box 534, SE-751 21 Uppsala, Sweden
| | - Xingxing Xu
- Division of Solid-State Electronics, Department of Engineering Sciences, The Ångström Laboratory, Uppsala University , P.O. Box 534, SE-751 21 Uppsala, Sweden
| | - Leif Nyholm
- Department of Chemistry, The Ångström Laboratory, Uppsala University , P.O. Box 534, SE-751 21 Uppsala, Sweden
| | - Zhen Zhang
- Division of Solid-State Electronics, Department of Engineering Sciences, The Ångström Laboratory, Uppsala University , P.O. Box 534, SE-751 21 Uppsala, Sweden
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42
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John T, Voo ZX, Kubeil C, Abel B, Graham B, Spiccia L, Martin LL. Effects of guanidino modified aminoglycosides on mammalian membranes studied using a quartz crystal microbalance. MEDCHEMCOMM 2017; 8:1112-1120. [PMID: 30108822 PMCID: PMC6072410 DOI: 10.1039/c7md00054e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Accepted: 03/24/2017] [Indexed: 01/21/2023]
Abstract
The increase in bacterial and viral resistance to current therapeutics has led to intensive research for new antibacterial and antiviral agents. Among these, aminoglycosides and their guanidino derivatives are potent candidates targeting specific RNA sequences. It is necessary that these substances can pass across mammalian membranes in order to reach their intracellular targets. This study investigated the effects of the aminoglycosides kanamycin A and neomycin B and their guanidino derivatives on mammalian mimetic membranes using a quartz crystal microbalance with dissipation monitoring (QCM-D). Lipid bilayers as membrane models were deposited onto gold coated quartz crystals and aminoglycosides added afterwards. Notably, the guanidino derivatives exhibited an initial stiffening of the membrane layer indicating a quick insertion of the planar guanidino groups into the membrane. The guanidino derivatives also reached their maximum binding to the membrane at lower concentrations than the native compounds. Therefore, these modified aminoglycosides are promising agents for the development of new antimicrobial treatments.
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Affiliation(s)
- Torsten John
- School of Chemistry , Monash University , Wellington Rd , Clayton , VIC 3800 , Australia .
- Leibniz Institute of Surface Modification, and Wilhelm-Ostwald-Institute for Physical and Theoretical Chemistry , Leipzig University , Permoserstrasse 15 , 04318 Leipzig , Germany
| | - Zhi Xiang Voo
- School of Chemistry , Monash University , Wellington Rd , Clayton , VIC 3800 , Australia .
| | - Clemens Kubeil
- School of Chemistry , Monash University , Wellington Rd , Clayton , VIC 3800 , Australia .
| | - Bernd Abel
- Leibniz Institute of Surface Modification, and Wilhelm-Ostwald-Institute for Physical and Theoretical Chemistry , Leipzig University , Permoserstrasse 15 , 04318 Leipzig , Germany
| | - Bim Graham
- Medicinal Chemistry , Monash Institute of Pharmaceutical Sciences , Monash University , 381 Royal Parade , Parkville , VIC 3052 , Australia
| | - Leone Spiccia
- School of Chemistry , Monash University , Wellington Rd , Clayton , VIC 3800 , Australia .
| | - Lisandra L Martin
- School of Chemistry , Monash University , Wellington Rd , Clayton , VIC 3800 , Australia .
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Mills DM, Calvo-Marzal P, Pinzon JM, Armas S, Kolpashchikov DM, Chumbimuni-Torres KY. A Single Electrochemical Probe Used for Analysis of Multiple Nucleic Acid Sequences. ELECTROANAL 2017; 29:873-879. [PMID: 29371782 PMCID: PMC5777621 DOI: 10.1002/elan.201600548] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Accepted: 10/27/2016] [Indexed: 01/28/2023]
Abstract
Electrochemical hybridization sensors have been explored extensively for analysis of specific nucleic acids. However, commercialization of the platform is hindered by the need for attachment of separate oligonucleotide probes complementary to a RNA or DNA target to an electrode's surface. Here we demonstrate that a single probe can be used to analyze several nucleic acid targets with high selectivity and low cost. The universal electrochemical four-way junction (4J)-forming (UE4J) sensor consists of a universal DNA stem-loop (USL) probe attached to the electrode's surface and two adaptor strands (m and f) which hybridize to the USL probe and the analyte to form a 4J associate. The m adaptor strand was conjugated with a methylene blue redox marker for signal ON sensing and monitored using square wave voltammetry. We demonstrated that a single sensor can be used for detection of several different DNA/RNA sequences and can be regenerated in 30 seconds by a simple water rinse. The UE4J sensor enables a high selectivity by recognition of a single base substitution, even at room temperature. The UE4J sensor opens a venue for a re-useable universal platform that can be adopted at low cost for the analysis of DNA or RNA targets.
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Affiliation(s)
- Dawn M. Mills
- Department of Chemistry, University of Central Florida, 4000 Central Florida Blvd., Orlando, FL 32816, United States
| | - Percy Calvo-Marzal
- Department of Chemistry, University of Central Florida, 4000 Central Florida Blvd., Orlando, FL 32816, United States
| | - Jeffer M. Pinzon
- Department of Chemistry, University of Central Florida, 4000 Central Florida Blvd., Orlando, FL 32816, United States
| | - Stephanie Armas
- Department of Chemistry, University of Central Florida, 4000 Central Florida Blvd., Orlando, FL 32816, United States
| | - Dmitry M. Kolpashchikov
- Department of Chemistry, University of Central Florida, 4000 Central Florida Blvd., Orlando, FL 32816, United States
- National Center for Forensic Science, University of Central Florida, Orlando, FL 32816, United States
- Burnett School of Biomedical Science, University of Central Florida, Orlando, FL 32816, United States
| | - Karin Y. Chumbimuni-Torres
- Department of Chemistry, University of Central Florida, 4000 Central Florida Blvd., Orlando, FL 32816, United States
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Zohreh M, Ghoreishi SM, Behpour M, Mohammadhassan M. Applied electrochemical biosensor based on covalently self assembled monolayer at gold surface for determination of epinephrine in the presence of Ascorbic acid. ARAB J CHEM 2017. [DOI: 10.1016/j.arabjc.2012.11.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Khan MZH. Pretreatment of ITO electrode and its physiochemical properties: Towards device fabrication. SURFACE ENGINEERING AND APPLIED ELECTROCHEMISTRY 2017. [DOI: 10.3103/s1068375516060090] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Tavahodi M, Ortiz R, Schulz C, Ekhtiari A, Ludwig R, Haghighi B, Gorton L. Direct Electron Transfer of Cellobiose Dehydrogenase on Positively Charged Polyethyleneimine Gold Nanoparticles. Chempluschem 2016; 82:546-552. [PMID: 31961594 DOI: 10.1002/cplu.201600453] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Revised: 10/07/2016] [Indexed: 01/24/2023]
Abstract
Efficient conjugation between biomolecules and electrode materials is one of the main challenges in the field of biosensors. Cellobiose dehydrogenase (CDH) is a monomeric enzyme, which consists of two separate domains: one catalytic dehydrogenase domain (DHCDH ) carrying strongly bound flavin adenine dinucleotide (FAD) in the active site and a cytochrome domain (CYTCDH ) carrying a b-type heme connected by a flexible linker region. Herein, we report on the development of a lactose biosensor, based on direct electron transfer (DET) from CDH from Phanerochaete sordida (PsCDH) electrostatically attached onto polyethyleneimine-stabilized gold nanoparticles (PEI@AuNPs) used to cover a conventional polycrystalline solid gold disk electrode. PEI@AuNPs were synthesized in aqueous solution using PEI as reducing agent for AuIII and as stabilizer for the nanoparticles. The heterogeneous electron-transfer (ET) rate (ks ) for the redox reaction of immobilized PsCDH at the modified electrodes was calculated based on the Laviron theory and was found to be (39.6±2.5) s-1 . The proposed lactose biosensor exhibits good long term stability as well as high and reproducible sensitivity to lactose with a response time less than 5 s and a linear range from 1 to 100 μm.
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Affiliation(s)
- Mojtaba Tavahodi
- Department of Analytical Chemistry, Biochemistry and Structural Biology, Lund University, P.O. Box 124, 22100, Lund, Sweden.,Department of Chemistry, Institute for Advanced Studies in Basic Sciences, P.O. Box 45195-1159, Gava Zang, Zanjan, 45195-1159, Iran
| | - Roberto Ortiz
- Department of Analytical Chemistry, Biochemistry and Structural Biology, Lund University, P.O. Box 124, 22100, Lund, Sweden
| | - Christopher Schulz
- Department of Analytical Chemistry, Biochemistry and Structural Biology, Lund University, P.O. Box 124, 22100, Lund, Sweden
| | - Ali Ekhtiari
- Department of Analytical Chemistry, Biochemistry and Structural Biology, Lund University, P.O. Box 124, 22100, Lund, Sweden
| | - Roland Ludwig
- Department of Food Sciences and Technology, BOKU-University of Natural Resources and Life Sciences, Muthgasse 18, 1190, Wien, Austria
| | - Behzad Haghighi
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences, P.O. Box 45195-1159, Gava Zang, Zanjan, 45195-1159, Iran.,Department of Chemistry, Shiraz University, Shiraz, 71454, Iran
| | - Lo Gorton
- Department of Analytical Chemistry, Biochemistry and Structural Biology, Lund University, P.O. Box 124, 22100, Lund, Sweden
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Baccaro AL, Gutz IG. Quick cold preparation of TiO2 nanolayers on gold from P25 suspensions – film structure, voltammetric behavior and photocatalytic performance for the oxidation of EDTA under UVA-LED irradiation. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.08.048] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Bhattarai JK, Tan YH, Pandey B, Fujikawa K, Demchenko AV, Stine KJ. Electrochemical Impedance Spectroscopy Study of Concanavalin A Binding to Self-Assembled Monolayers of Mannosides on Gold Wire Electrodes. J Electroanal Chem (Lausanne) 2016; 780:311-320. [PMID: 28413372 DOI: 10.1016/j.jelechem.2016.09.045] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The interactions of the lectin Concanavalin A (Con A) with self-assembled monolayers (SAMs) of thiolated mono-, di-, and tri-mannosides were studied on the surface of gold wires using electrochemical impedance spectroscopy (EIS). The SAMs of mannosides were prepared either pure or along with thiolated triethylene glycol (TEG) at different molar ratios (1:1, 1:2, 1:4, 1:9, and 1:19) to better understand and optimize the interaction conditions. The charge-transfer resistance of the [Fe(CN)6]3-/4- redox probe was compared before and after the interaction at different concentrations of Con A to determine the equilibrium dissociation constant (Kd) and limit of detection (LOD). Values of Kd were found in the nanomolar range showing multivalent interactions between mannosides and Con A, and LOD was found ranging from 4-13 nM depending on the type of mannoside SAM used. Analysis using the Hill equation suggests negative cooperativity in the binding behavior. Peanut agglutinin was used as a negative control, and cyclic voltammetry was used to further support the experiments. We have found that neither the pure nor the widely dispersed monolayers of mannosides provide the conditions for optimal binding of Con A. The binding of Con A to these SAMs is sensitive to the molar ratio of the mannoside used to prepare the SAM and to the structure of the mannoside. A simple cleaning method has also been shown to regenerate the used gold wire electrodes. The results from these experiments contribute to the development of simple, cheap, selective, and sensitive EIS-based bioassays, especially for lectin-carbohydrate interactions.
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Affiliation(s)
- Jay K Bhattarai
- Department of Chemistry and Biochemistry, University of Missouri-St. Louis, Saint Louis, MO 63121, USA
| | - Yih Horng Tan
- Department of Chemistry and Biochemistry, University of Missouri-St. Louis, Saint Louis, MO 63121, USA
| | - Binod Pandey
- Department of Chemistry and Biochemistry, University of Missouri-St. Louis, Saint Louis, MO 63121, USA
| | - Kohki Fujikawa
- Department of Chemistry and Biochemistry, University of Missouri-St. Louis, Saint Louis, MO 63121, USA
| | - Alexei V Demchenko
- Department of Chemistry and Biochemistry, University of Missouri-St. Louis, Saint Louis, MO 63121, USA
| | - Keith J Stine
- Department of Chemistry and Biochemistry, University of Missouri-St. Louis, Saint Louis, MO 63121, USA
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Karimi Shervedani R, Bahrani S, Samiei Foroushani M, Momenbeik F. Selective Detection of Dopamine in the Presence of Ascorbic and Uric Acids through its Covalent Immobilization on Gold Mercaptopropionic Acid Self-assembled Monolayer. ELECTROANAL 2016. [DOI: 10.1002/elan.201600220] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
| | - Sonia Bahrani
- Department of Chemistry; University of Isfahan; Isfahan 81746-73441 I.R. IRAN
| | | | - Fariborz Momenbeik
- Department of Chemistry; University of Isfahan; Isfahan 81746-73441 I.R. IRAN
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