1
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Urbanowicz M, Sadowska K, Lemieszek B, Paziewska-Nowak A, Sołdatowska A, Dawgul M, Pijanowska DG. Effect of dendrimer-based interlayers for enzyme immobilization on a model electrochemical sensing system for glutamate. Bioelectrochemistry 2023; 152:108407. [PMID: 36917883 DOI: 10.1016/j.bioelechem.2023.108407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 02/13/2023] [Accepted: 02/24/2023] [Indexed: 03/07/2023]
Abstract
In this paper, we discuss dendrimer usage in enzyme-based electrochemical biosensors, particularly with respect to biomolecule loading on the sensing surface. A novel approach to design bioactive layers with immobilized enzymes for electrochemical biosensors using the surface plasmon resonance (SPR) method in combination with electrochemical impedance spectroscopy was presented. The gold surface was modified with linear linkers (various mercaptoalkanoic acids and aminoalkanethiols) and poly(amidoamine) dendrimers from the first- to fifth-generation. The best functionalization procedure was established by detailed SPR studies and transferred onto gold electrodes to electrochemically examine the model enzymatic reaction catalysed by glutamate oxidase. In the case of the chronoamperometric method, the determined sensitivity was 3.36 ± 0.08 μA∙mM-1, and the low limit of detection (LOD) was 1.52 μM. Comparing the sensitivity and LOD obtained for CV measurements, the values of these parameters were 2.5 times higher and 4 times lower, respectively, for the fourth-generation dendrimer-based biosensor and the biosensor with a linear linker. The positive impact of the dendrimer interlayer on the long-term enzyme activity was also confirmed. The research results indicate the possibility of a significant increase in the sensor response using the dendrimer itself without enriching it with electrochemical components.
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Affiliation(s)
- Marcin Urbanowicz
- Nalecz Institute of Biocybernetics and Biomedical Engineering Polish Academy of Sciences, Ks. Trojdena 4, 02-109 Warsaw, Poland.
| | - Kamila Sadowska
- Nalecz Institute of Biocybernetics and Biomedical Engineering Polish Academy of Sciences, Ks. Trojdena 4, 02-109 Warsaw, Poland
| | - Bartłomiej Lemieszek
- Gdańsk University of Technology, Faculty of Electronics, Telecommunications and Informatics, Department of Biomedical Engineering, Narutowicza 11/12, 80-233 Gdańsk, Poland
| | - Agnieszka Paziewska-Nowak
- Nalecz Institute of Biocybernetics and Biomedical Engineering Polish Academy of Sciences, Ks. Trojdena 4, 02-109 Warsaw, Poland
| | - Anna Sołdatowska
- Nalecz Institute of Biocybernetics and Biomedical Engineering Polish Academy of Sciences, Ks. Trojdena 4, 02-109 Warsaw, Poland
| | - Marek Dawgul
- Nalecz Institute of Biocybernetics and Biomedical Engineering Polish Academy of Sciences, Ks. Trojdena 4, 02-109 Warsaw, Poland
| | - Dorota G Pijanowska
- Nalecz Institute of Biocybernetics and Biomedical Engineering Polish Academy of Sciences, Ks. Trojdena 4, 02-109 Warsaw, Poland
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2
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Label-Free Electrochemical Test of Protease Interaction with a Peptide Substrate Modified Gold Electrode. CHEMOSENSORS 2021. [DOI: 10.3390/chemosensors9080199] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Efficient deposition of biomolecules on the surface, maintaining their full activity and stability, is a most significant factor in biosensor construction. For this reason, more and more research is focused on the development of electrochemical biosensors that have the ability to electrically detect adsorbed molecules on electrode surface with high selectivity and sensitivity. The presented research aims to develop an efficient methodology that allows quantification of processes related to the evaluation of enzyme activity (proprotein convertase) using electrochemical methods. In this study we used impedance spectroscopy to investigate the immobilization of peptide substrate (Arg-Val-Arg-Arg) modified with 11-mercaptoundecanoic acid on the surface of gold electrode. Both the synthesis of the peptide substrate as well as the full electrochemical characteristics of the obtained electrode materials have been described. Experimental conditions, including concentration of peptide substrate immobilization, modification time, linker, and the presence of additional blocking groups have been optimized. The main advantages of the described method is that it makes it possible to observe the peptide substrate–enzyme interaction without the need to use fluorescent labels. This also allows observation of this interaction at a very low concentration. Both of these factors make this new technique competitive with the standard spectrofluorimetric method.
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3
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Nakatsuka N, Faillétaz A, Eggemann D, Forró C, Vörös J, Momotenko D. Aptamer Conformational Change Enables Serotonin Biosensing with Nanopipettes. Anal Chem 2021; 93:4033-4041. [PMID: 33596063 DOI: 10.1021/acs.analchem.0c05038] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
We report artificial nanopores in the form of quartz nanopipettes with ca. 10 nm orifices functionalized with molecular recognition elements termed aptamers that reversibly recognize serotonin with high specificity and selectivity. Nanoscale confinement of ion fluxes, analyte-specific aptamer conformational changes, and related surface charge variations enable serotonin sensing. We demonstrate detection of physiologically relevant serotonin amounts in complex environments such as neurobasal media, in which neurons are cultured in vitro. In addition to sensing in physiologically relevant matrices with high sensitivity (picomolar detection limits), we interrogate the detection mechanism via complementary techniques such as quartz crystal microbalance with dissipation monitoring and electrochemical impedance spectroscopy. Moreover, we provide a novel theoretical model for structure-switching aptamer-modified nanopipette systems that supports experimental findings. Validation of specific and selective small-molecule detection, in parallel with mechanistic investigations, demonstrates the potential of conformationally changing aptamer-modified nanopipettes as rapid, label-free, and translatable nanotools for diverse biological systems.
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Affiliation(s)
- Nako Nakatsuka
- Laboratory of Biosensors and Bioelectronics, Institute for Biomedical Engineering, ETH Zürich CH-8092, Switzerland
| | - Alix Faillétaz
- Laboratory of Biosensors and Bioelectronics, Institute for Biomedical Engineering, ETH Zürich CH-8092, Switzerland
| | - Dominic Eggemann
- Laboratory of Biosensors and Bioelectronics, Institute for Biomedical Engineering, ETH Zürich CH-8092, Switzerland
| | - Csaba Forró
- Laboratory of Biosensors and Bioelectronics, Institute for Biomedical Engineering, ETH Zürich CH-8092, Switzerland
| | - János Vörös
- Laboratory of Biosensors and Bioelectronics, Institute for Biomedical Engineering, ETH Zürich CH-8092, Switzerland
| | - Dmitry Momotenko
- Laboratory of Biosensors and Bioelectronics, Institute for Biomedical Engineering, ETH Zürich CH-8092, Switzerland
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4
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Congur G. Monitoring of glyphosate-DNA interaction and synergistic genotoxic effect of glyphosate and 2,4-dichlorophenoxyacetic acid using an electrochemical biosensor. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 271:116360. [PMID: 33412448 DOI: 10.1016/j.envpol.2020.116360] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 12/11/2020] [Accepted: 12/17/2020] [Indexed: 06/12/2023]
Abstract
Glyphosate (GLY) is a broad-spectrum herbicide used worldwide to control broadleaf sedge, and grass weeds to control non-specific vegetation. Although it was evaluated as non-toxic agent in 20th century, its carcinogenic and genotoxic potential has being intensively investigated all over the world in the last decade. Moreover, the combination of GLY and 2,4-dichlorophenoxyacetic acid (2,4-D) has been widely applied. Although genotoxicity of GLY has been evaluated in vivo studies, there is no report in the literature for the monitoring of in vitro biointeraction of GLY and double stranded DNA, or how effect the combination of GLY and 2,4-D onto DNA. Herein, an electrochemical biosensor platform was developed for detection of the pesticide-DNA interaction by using disposable pencil graphite electrodes (PGEs). First, voltammetric detection of the interaction between GLY and DNA was investigated and the electrochemical characterization of the interaction was achieved. Taking a step further, the synergistic genotoxic effect of the mixture of GLY and 2,4-dichlorophenoxyacetic acid (2,4-D) or the mixture of their herbicide forms onto DNA could be monitored. This effect was concentration dependent, and the herbicide of GLY or the use of mixture of herbicides of GLY and 2,4-D had more genotoxic effect than analytical grade of the active molecules, GLY and 2,4-D. The single-use PGEs provided to fabricate robust, eco-friendly and time saver recognition platform for monitoring of herbicide-DNA interaction with the sensitive and reliable results. It is expected that this study will lead to be designed miniaturized lab-on-a chip platforms for on-line analysis of the pesticide-nucleic acid interactions.
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Affiliation(s)
- Gulsah Congur
- Bilecik Seyh Edebali University, Vocational School of Health Services, 11230 Bilecik, Turkey; Bilecik Seyh Edebali University, Biotechnology Application and Research Center, 11230, Bilecik, Turkey.
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5
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Pradhan R, Kalkal A, Jindal S, Packirisamy G, Manhas S. Four electrode-based impedimetric biosensors for evaluating cytotoxicity of tamoxifen on cervical cancer cells. RSC Adv 2020; 11:798-806. [PMID: 35423705 PMCID: PMC8693377 DOI: 10.1039/d0ra09155c] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Accepted: 12/06/2020] [Indexed: 11/21/2022] Open
Abstract
In the current study, novel four electrode-based impedimetric biosensors have been fabricated using photolithography techniques and utilized to evaluate the cytotoxicity of tamoxifen on cervical cancer cell lines. The cell impedance was measured employing the electric cell-substrate impedance sensing (ECIS) method over the frequency range of 100 Hz to 1 MHz. The results obtained from impedimetric biosensors indicate that tamoxifen caused a significant reduction in the number of HeLa cells on the electrode surfaces in a dose-dependent manner. Next, the impedance values recorded by the fabricated biosensors have been compared with the results obtained from the different conventional techniques such as 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT), live-dead cell assay, and flow cytometric analysis to estimate the cytotoxicity of tamoxifen. The impedimetric cytotoxicity of tamoxifen over the growth and proliferation of HeLa cells correlates well with the traditional methods. In addition, the IC50 values obtained from impedimetric data and MTT assay are comparable, signifying that the ECIS technique can be an alternative method to assess the cytotoxicity of different novel drugs. The working principle of the biosensor has been examined by scanning electron microscopy, indicating the detachment of cells from gold surfaces in a dose-dependent manner, signifying the decrease in impedance at higher drug doses.
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Affiliation(s)
- Rangadhar Pradhan
- Centre for Nanotechnology, Indian Institute of Technology Roorkee Roorkee-247667 Uttarakhand India +91-1332-273560 +91-1332-285490 +91-1332-285650
| | - Ashish Kalkal
- Department of Biotechnology, Indian Institute of Technology Roorkee Roorkee-247667 Uttarakhand India
| | - Shlok Jindal
- Department of Biotechnology, Indian Institute of Technology Roorkee Roorkee-247667 Uttarakhand India
| | - Gopinath Packirisamy
- Centre for Nanotechnology, Indian Institute of Technology Roorkee Roorkee-247667 Uttarakhand India +91-1332-273560 +91-1332-285490 +91-1332-285650
- Department of Biotechnology, Indian Institute of Technology Roorkee Roorkee-247667 Uttarakhand India
| | - Sanjeev Manhas
- Department of Electronics and Communication Engineering, Indian Institute of Technology Roorkee Roorkee-247667 Uttarakhand India +91-1332-285368 +91-1332-285147
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6
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Lima D, Hacke ACM, Inaba J, Pessôa CA, Kerman K. Electrochemical detection of specific interactions between apolipoprotein E isoforms and DNA sequences related to Alzheimer's disease. Bioelectrochemistry 2019; 133:107447. [PMID: 32006858 DOI: 10.1016/j.bioelechem.2019.107447] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Revised: 12/14/2019] [Accepted: 12/15/2019] [Indexed: 12/26/2022]
Abstract
Apolipoprotein E4 (ApoE4) has a key role on the onset and progression of Alzheimer's disease (AD), since it favours the deposition of toxic amyloid-beta (Aβ) aggregates in the brain. These effects might result from the interaction between ApoE4 and specific DNA promoters related to cellular autophagy pathways and to the expression of neuroprotective proteins, like sirtuin-1. Herein, we modified gold electrodes with mixed self-assembled monolayers of 6-mercapto-1-hexanol and thiolated DNA oligonucleotides related to CLEAR (associated with autophagic processes that enable the clearance of toxic species, such as Aβ) and SirT1 (related to the expression of sirtuin-1) promoter sequences. The interactions of the immobilized DNA sequences with isoforms of ApoE (ApoE4/ApoE3/ApoE2) were investigated by differential pulse voltammetry (DPV) and electrochemical impedance spectroscopy (EIS) measurements. By monitoring current and charge transfer resistance (Rct) variations, CLEAR showed to interact specifically with ApoE4, whereas SirT1 showed a higher affinity to ApoE4 compared to ApoE3 and ApoE2. To the best of our knowledge, this is the first report about the application of electrochemical techniques to investigate the sequence-specific interaction between ApoE isoforms and CLEAR and SirT1 oligonucleotides.
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Affiliation(s)
- Dhésmon Lima
- Department of Chemistry, Universidade Estadual de Ponta Grossa, Av. General Carlos Cavalcanti, 4748, 84030-900 Ponta Grossa, PR, Brazil
| | - Ana Carolina M Hacke
- Department of Chemistry, Universidade Estadual de Ponta Grossa, Av. General Carlos Cavalcanti, 4748, 84030-900 Ponta Grossa, PR, Brazil
| | - Juliana Inaba
- Department of Chemistry, Universidade Estadual de Ponta Grossa, Av. General Carlos Cavalcanti, 4748, 84030-900 Ponta Grossa, PR, Brazil
| | - Christiana A Pessôa
- Department of Chemistry, Universidade Estadual de Ponta Grossa, Av. General Carlos Cavalcanti, 4748, 84030-900 Ponta Grossa, PR, Brazil
| | - Kagan Kerman
- Department of Physical and Environmental Sciences, University of Toronto Scarborough, 1265 Military Trail, M1C 1A4 Toronto, ON, Canada.
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7
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Rapid and label-free, electrochemical DNA detection utilizing the oxidase-mimicking activity of cerium oxide nanoparticles. Electrochem commun 2019. [DOI: 10.1016/j.elecom.2018.12.008] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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8
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Su Q, Vogt S, Nöll G. Langmuir Analysis of the Binding Affinity and Kinetics for Surface Tethered Duplex DNA and a Ligand-Apoprotein Complex. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:14738-14748. [PMID: 30005576 DOI: 10.1021/acs.langmuir.7b04347] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
In this work, the hybridization and dehybridization of ssDNA with 20 bases at gold coated sensor surfaces modified with complementary 20 bases capture probe ssDNA was investigated at 18 °C by quartz crystal microbalance measurements with dissipation monitoring (QCM-D). A sequence of 20 base pairs with a melting temperature of about 64 °C was chosen, since in many biosensor studies the target molecules are DNA or RNA oligomers of similar length. It turned out that at the applied experimental conditions the DNA hybridization was irreversible, and therefore the hybridization and dehybridization process could not be described by the Langmuir model of adsorption. Nevertheless, quantitative dehybridization could be achieved by rinsing the sensor surface thoroughly with pure water. When in contrast the hybridization of a target with only 10 bases complementary to the outermost 10 bases of the 20 bases capture probe was studied, binding and unbinding were reversible, and the hybridization/dehybridization process could be satisfactorily described by the Langmuir model. For the 10 base pair sequence, the melting temperature was about 36 °C. Apparently, for Langmuir behavior, it is important that the experiments are applied at a temperature sufficiently close to the melting temperature of the sequence under investigation to ensure that at least traces of the target molecules are unhybridized (i.e., there needs to be an equilibrium between hybridized and dehybridized target molecules). To validate the reliability of our experimental approach we also studied the reconstitution and disassembly of the flavoprotein dodecin at flavin-terminated DNA monolayers, as according to previous studies it is assumed that the apododecin-flavin system can be well described by the Langmuir model. As a result, this assumption could be verified. Using three different approaches, KD values were obtained that differ not more than by a factor of 4.
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Affiliation(s)
- Qiang Su
- Organic Chemistry, Chem. Biol. Dept., Faculty IV , Siegen University , Adolf-Reichwein-Str. 2 , 57068 Siegen , Germany
| | - Stephan Vogt
- Organic Chemistry, Chem. Biol. Dept., Faculty IV , Siegen University , Adolf-Reichwein-Str. 2 , 57068 Siegen , Germany
| | - Gilbert Nöll
- Organic Chemistry, Chem. Biol. Dept., Faculty IV , Siegen University , Adolf-Reichwein-Str. 2 , 57068 Siegen , Germany
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9
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Lacina K, Sopoušek J, Čunderlová V, Hlaváček A, Václavek T, Lacinová V. Biosensing based on electrochemical impedance spectroscopy: Influence of the often-ignored molecular charge. Electrochem commun 2018. [DOI: 10.1016/j.elecom.2018.07.015] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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10
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Heinrich F, Riedel M, Lisdat F. Detection of abasic DNA by means of impedance spectroscopy. Electrochem commun 2018. [DOI: 10.1016/j.elecom.2018.04.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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11
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Cui F, Xu Y, Wang R, Liu H, Chen L, Zhang Q, Mu X. Label-free impedimetric glycan biosensor for quantitative evaluation interactions between pathogenic bacteria and mannose. Biosens Bioelectron 2017; 103:94-98. [PMID: 29287240 DOI: 10.1016/j.bios.2017.11.068] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Revised: 11/09/2017] [Accepted: 11/29/2017] [Indexed: 12/27/2022]
Abstract
In order to understanding the pathogenic mechanism of infectious diseases, it was important to study the selective recognition and interaction between pathogenic bacteria and host cells. In this paper, a novel electrochemical impedance biosensor was proposed, in which the Man/MUA-MH/Au sensing surface (Man: mannose; MUA: 11-mercapto eleven acid; MH: 6-mercapto hexanol) was fabricated and was of good biologically active and stability. The capture capacity of the designed sensing surface for S. typhimurium ATCC14028, E. coli JM109 and E. coli DH5α were characterized by Electrochemical impedance spectroscopy (EIS). According to Randless equivalent circuit and the Frumkin isotherm model, electron transfer impedance (Ret) was obtained and the binding affinity of the three bacteria and Man was calculated. It was shown that the sensing surface had a better binding affinity for S. typhimurium ATCC14028 with KADS(S.T.) = 2.16 × 106 CFU/mL. The impedance normalized value NIC (S.T.-Man) was of a good linear relationship with the logarithm of bacterial concentration (R2 = 0.96) in the range of 50-1000 CFU/mL. The detection limit was 50 CFU/mL. Meanwhile, the E. coli JM109 which expresses type 1 fimbriae was also adsorbed on the designed sensing surface with KADS(JM109) = 5.84 × 103 CFU/mL. It was illustrated that the novel electrochemical impedance biosensor could be more rapid and reliable for studying interactions between pathogen and glycan, and it was also perspective for a new point-of-care diagnostic tool for evaluating the pathogenicity bacteria.
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Affiliation(s)
- Feiyun Cui
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400030, China; Key Disciplines Lab of Novel Micro-nano Devices and System Technology, Chongqing University, Chongqing 400030, China; International R & D center of Micro-nano Systems and New Materials Technology, Chongqing University, Chongqing 400030, China
| | - Yi Xu
- Key Disciplines Lab of Novel Micro-nano Devices and System Technology, Chongqing University, Chongqing 400030, China; Key Laboratory for Optoelectronic Technology & System of Ministry of Education, Chongqing University, Chongqing 400044, China; International R & D center of Micro-nano Systems and New Materials Technology, Chongqing University, Chongqing 400030, China; School of Optoelectronics Engineering, Chongqing University, Chongqing 400044, China.
| | - Renjie Wang
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400030, China; Key Disciplines Lab of Novel Micro-nano Devices and System Technology, Chongqing University, Chongqing 400030, China; International R & D center of Micro-nano Systems and New Materials Technology, Chongqing University, Chongqing 400030, China
| | - Haitao Liu
- Key Disciplines Lab of Novel Micro-nano Devices and System Technology, Chongqing University, Chongqing 400030, China; Key Laboratory for Optoelectronic Technology & System of Ministry of Education, Chongqing University, Chongqing 400044, China
| | - Li Chen
- Key Disciplines Lab of Novel Micro-nano Devices and System Technology, Chongqing University, Chongqing 400030, China; Key Laboratory for Optoelectronic Technology & System of Ministry of Education, Chongqing University, Chongqing 400044, China; International R & D center of Micro-nano Systems and New Materials Technology, Chongqing University, Chongqing 400030, China; School of Optoelectronics Engineering, Chongqing University, Chongqing 400044, China.
| | - Qing Zhang
- Chongqing institute for food and drug control, Chongqing 400044, China
| | - Xiaojing Mu
- Key Disciplines Lab of Novel Micro-nano Devices and System Technology, Chongqing University, Chongqing 400030, China; Key Laboratory for Optoelectronic Technology & System of Ministry of Education, Chongqing University, Chongqing 400044, China; International R & D center of Micro-nano Systems and New Materials Technology, Chongqing University, Chongqing 400030, China; School of Optoelectronics Engineering, Chongqing University, Chongqing 400044, China
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12
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Karaballi RA, Nel A, Krishnan S, Blackburn J, Brosseau CL. Development of an electrochemical surface-enhanced Raman spectroscopy (EC-SERS) aptasensor for direct detection of DNA hybridization. Phys Chem Chem Phys 2016; 17:21356-63. [PMID: 25780805 DOI: 10.1039/c4cp05077k] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Rapid detection of disease biomarkers at the patient point-of-care is essential to timely and effective treatment. The research described herein focuses on the development of an electrochemical surface-enhanced Raman spectroscopy (EC-SERS) DNA aptasensor capable of direct detection of tuberculosis (TB) DNA. Specifically, a plausible DNA biomarker present in TB patient urine was chosen as the model target for detection. Cost-effective screen printed electrodes (SPEs) modified with silver nanoparticles (AgNP) were used as the aptasensor platform, onto which the aptamer specific for the target DNA was immobilized. Direct detection of the target DNA was demonstrated through the appearance of SERS peaks characteristic for adenine, present only in the target strand. Modulation of the applied potential allowed for a sizeable increase in the observed SERS response and the use of thiol back-filling prevented non-specific adsorption of non-target DNA. To our knowledge, this work represents the first EC-SERS study of an aptasensor for the direct, label-free detection of DNA hybridization. Such a technology paves the way for rapid detection of disease biomarkers at the patient point-of-care.
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Affiliation(s)
- R A Karaballi
- Department of Chemistry, Saint Mary's University, Halifax, Nova Scotia B3H 3C3, Canada.
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13
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Paleček E, Tkáč J, Bartošík M, Bertók T, Ostatná V, Paleček J. Electrochemistry of nonconjugated proteins and glycoproteins. Toward sensors for biomedicine and glycomics. Chem Rev 2015; 115:2045-108. [PMID: 25659975 PMCID: PMC4360380 DOI: 10.1021/cr500279h] [Citation(s) in RCA: 215] [Impact Index Per Article: 23.9] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Indexed: 02/07/2023]
Affiliation(s)
- Emil Paleček
- Institute
of Biophysics Academy of Science of the Czech Republic, v.v.i., Královopolská
135, 612 65 Brno, Czech Republic
| | - Jan Tkáč
- Institute
of Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, 845 38 Bratislava, Slovakia
| | - Martin Bartošík
- Regional
Centre for Applied Molecular Oncology, Masaryk
Memorial Cancer Institute, Žlutý kopec 7, 656 53 Brno, Czech Republic
| | - Tomáš Bertók
- Institute
of Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, 845 38 Bratislava, Slovakia
| | - Veronika Ostatná
- Institute
of Biophysics Academy of Science of the Czech Republic, v.v.i., Královopolská
135, 612 65 Brno, Czech Republic
| | - Jan Paleček
- Central
European Institute of Technology, Masaryk
University, Kamenice
5, 625 00 Brno, Czech Republic
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14
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Riedel M, Kartchemnik J, Schöning MJ, Lisdat F. Impedimetric DNA Detection—Steps Forward to Sensorial Application. Anal Chem 2014; 86:7867-74. [DOI: 10.1021/ac501800q] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Marc Riedel
- Biosystems
Technology, Institute of Applied Life Sciences, Technical University of Applied Sciences Wildau, Hochschulring 1, 15745 Wildau, Germany
| | - Julia Kartchemnik
- Biosystems
Technology, Institute of Applied Life Sciences, Technical University of Applied Sciences Wildau, Hochschulring 1, 15745 Wildau, Germany
| | - Michael J. Schöning
- Institute
of Nano- and Biotechnologies, University of Applied Sciences Aachen, Heinrich-Mußmann-Strasse 1, 52428 Jülich, Germany
| | - Fred Lisdat
- Biosystems
Technology, Institute of Applied Life Sciences, Technical University of Applied Sciences Wildau, Hochschulring 1, 15745 Wildau, Germany
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15
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Paleček E, Černocká H, Ostatná V, Navrátilová L, Brázdová M. Electrochemical sensing of tumor suppressor protein p53–deoxyribonucleic acid complex stability at an electrified interface. Anal Chim Acta 2014; 828:1-8. [DOI: 10.1016/j.aca.2014.03.029] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Revised: 03/21/2014] [Accepted: 03/24/2014] [Indexed: 10/25/2022]
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16
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Taleat Z, Cristea C, Marrazza G, Mazloum-Ardakani M, Săndulescu R. Electrochemical immunoassay based on aptamer–protein interaction and functionalized polymer for cancer biomarker detection. J Electroanal Chem (Lausanne) 2014. [DOI: 10.1016/j.jelechem.2014.01.015] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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17
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Wu CC, Yang DJ. A label-free impedimetric DNA sensing chip integrated with AC electroosmotic stirring. Biosens Bioelectron 2013; 43:348-54. [DOI: 10.1016/j.bios.2012.12.041] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2012] [Revised: 11/29/2012] [Accepted: 12/13/2012] [Indexed: 10/27/2022]
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Romero V, Vázquez M, Benavente J. Study of ionic and diffusive transport through a regenerated cellulose nanoporous membrane. J Memb Sci 2013. [DOI: 10.1016/j.memsci.2013.01.012] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Algarra M, Campos BB, Alonso B, Casado CM, Esteves da Silva JC, Benavente J. Inclusion of thiol DAB dendrimer/CdSe quantum dots based in a membrane structure: Surface and bulk membrane modification. Electrochim Acta 2013. [DOI: 10.1016/j.electacta.2012.10.143] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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