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Lomae A, Teekayupak K, Preechakasedkit P, Pasomsub E, Ozer T, Henry CS, Citterio D, Vilaivan T, Chailapakul O, Ruecha N. Peptide nucleic acid probe-assisted paper-based electrochemical biosensor for multiplexed detection of respiratory viruses. Talanta 2024; 279:126613. [PMID: 39096788 DOI: 10.1016/j.talanta.2024.126613] [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: 01/25/2024] [Revised: 07/17/2024] [Accepted: 07/23/2024] [Indexed: 08/05/2024]
Abstract
The similar transmission patterns and early symptoms of respiratory viral infections, particularly severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), influenza (H1N1), and respiratory syncytial virus (RSV), pose substantial challenges in the diagnosis, therapeutic management, and handling of these infectious diseases. Multiplexed point-of-care testing for detection is urgently needed for prompt and efficient disease management. Here, we introduce an electrochemical paper-based analytical device (ePAD) platform for multiplexed and label-free detection of SARS-CoV-2, H1N1, and RSV infection using immobilized pyrrolidinyl peptide nucleic acid probes. Hybridization between the probes and viral nucleic acid targets causes changes in the electrochemical response. The resulting sensor offers high sensitivity and low detection limits of 0.12, 0.35, and 0.36 pM for SARS-CoV-2 (N gene), H1N1, and RSV, respectively, without showing any cross-reactivities. The amplification-free detection of extracted RNA from 42 nasopharyngeal swab samples was successfully demonstrated and validated against reverse-transcription polymerase chain reaction (range of cycle threshold values: 17.43-25.89). The proposed platform showed excellent clinical sensitivity (100 %) and specificity (≥97 %) to achieve excellent agreement (κ ≥ 0.914) with the standard assay, thereby demonstrating its applicability for the screening and diagnosis of these respiratory diseases.
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Affiliation(s)
- Atchara Lomae
- Metallurgy and Materials Science Research Institute, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok, 10330, Thailand
| | - Kanyapat Teekayupak
- Electrochemistry and Optical Spectroscopy Center of Excellence (EOSCE), Department of Chemistry, Faculty of Science, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok, 10330, Thailand
| | - Pattarachaya Preechakasedkit
- Metallurgy and Materials Science Research Institute, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok, 10330, Thailand
| | - Ekawat Pasomsub
- Department of Pathology, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | - Tugba Ozer
- Department of Bioengineering, Faculty of Chemical-Metallurgical Engineering, Yildiz Technical University, 34220, Istanbul, Turkey
| | - Charles S Henry
- Metallurgy and Materials Science Research Institute, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok, 10330, Thailand; Department of Chemistry, Colorado State University, Fort Collins, CO, 80523, USA
| | - Daniel Citterio
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, Yokohama, Kanagawa, 223-8522, Japan
| | - Tirayut Vilaivan
- Organic Synthesis Research Unit, Department of Chemistry, Faculty of Science, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok, 10330, Thailand
| | - Orawon Chailapakul
- Electrochemistry and Optical Spectroscopy Center of Excellence (EOSCE), Department of Chemistry, Faculty of Science, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok, 10330, Thailand.
| | - Nipapan Ruecha
- Metallurgy and Materials Science Research Institute, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok, 10330, Thailand; Electrochemistry and Optical Spectroscopy Center of Excellence (EOSCE), Department of Chemistry, Faculty of Science, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok, 10330, Thailand.
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2
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Direct Electrochemistry & Enzyme Characterization of Fresh Tobacco RNA. J Electroanal Chem (Lausanne) 2023. [DOI: 10.1016/j.jelechem.2023.117156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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3
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Poujouly C, Le Gall J, Freisa M, Kechkeche D, Bouville D, Khemir J, Gonzalez-Losada P, Gamby J. Microfluidic Chip for the Electrochemical Detection of MicroRNAs: Methylene Blue Increasing the Specificity of the Biosensor. Front Chem 2022; 10:868909. [PMID: 35425760 PMCID: PMC9002130 DOI: 10.3389/fchem.2022.868909] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Accepted: 03/07/2022] [Indexed: 11/13/2022] Open
Abstract
MicroRNAs (miRNAs) are biomarkers involved in biological processes that are released by cells and found in biological fluids such as blood. The development of nucleic acid-based biosensors has significantly increased in the past 10 years because the detection of such nucleic acids can easily be applied in the field of early diagnosis. These biosensors need to be sensitive, specific, and fast in order to be effective. This work introduces a newly-built electrochemical biosensor that enables a fast detection in 30 min and, as a result of its integration in microfluidics, presents a limit of detection as low as 1 aM. The litterature concerning the specificity of electrochemical biosensors includes several studies that report one base-mismatch, with the base-mismatch located in the middle of the strand. We report an electrochemical nucleic acid biosensor integrated into a microfluidic chip, allowing for a one-base-mismatch specificity independently from the location of the mismatch in the strand. This specificity was improved using a solution of methylene blue, making it possible to discriminate a partial hybridization from a complete and complementary hybridization.
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4
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Kaimal R, Mansukhlal PN, Aljafari B, Anandan S, Ashokkumar M. Ultrasound-aided synthesis of gold-loaded boron-doped graphene quantum dots interface towards simultaneous electrochemical determination of guanine and adenine biomolecules. ULTRASONICS SONOCHEMISTRY 2022; 83:105921. [PMID: 35066331 PMCID: PMC8783145 DOI: 10.1016/j.ultsonch.2022.105921] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Revised: 01/10/2022] [Accepted: 01/14/2022] [Indexed: 06/14/2023]
Abstract
To acquire substantial electrochemical signals of guanine-GUA and adenine-ADE present in deoxyribonucleic acid-DNA, it is critical to investigate innovative electrode materials and their interfaces. In this study, gold-loaded boron-doped graphene quantum dots (Au@B-GQDs) interface was prepared via ultrasound-aided reduction method for monitoring GUA and ADE electrochemically. Transmission electron microscopy-TEM, Ultraviolet-Visible spectroscopy-UV-Vis, Raman spectroscopy, X-ray photoelectron spectroscopy-XPS, cyclic voltammetry-CV, and differential pulse voltammetry-DPV were used to examine the microstructure of the fabricated interfaceand demonstrate its electrochemical characteristics. The sensor was constructed by depositing the as-prepared Au@B-GQDs as a thin layer on a glassy carbon-GC electrode by the drop-casting method and carried out the electrochemical studies. The resulting sensor exhibited a good response with a wide linear range (GUA = 0.5-20 μM, ADE = 0.1-20 μM), a low detection limit-LOD (GUA = 1.71 μM, ADE = 1.84 μM), excellent sensitivity (GUA = 0.0820 µAµM-1, ADE = 0.1561 µAµM-1) and selectivity with common interferents results from biological matrixes. Furthermore, it seems to have prominentselectivity, reproducibility, repeatability, and long-lastingstability. The results demonstrate that the fabricated Au@B-GQDs/GC electrode is a simple and effective sensing platform for detecting GUA and ADE in neutral media at low potential as it exhibited prominent synergistic impact and outstanding electrocatalytic activity corresponding to individual AuNPs and B-GQDs modified electrodes.
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Affiliation(s)
- Reshma Kaimal
- Nanomaterials & Solar Energy Conversion Lab, Department of Chemistry, National Institute of Technology, Tiruchirappalli 620015, India
| | - Patel Nishant Mansukhlal
- Nanomaterials & Solar Energy Conversion Lab, Department of Chemistry, National Institute of Technology, Tiruchirappalli 620015, India
| | - Belqasem Aljafari
- Department of Electrical Engineering, College of Engineering, Najran University, Najran 11001, Saudi Arabia
| | - Sambandam Anandan
- Nanomaterials & Solar Energy Conversion Lab, Department of Chemistry, National Institute of Technology, Tiruchirappalli 620015, India.
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5
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Papavasileiou AV, Trachioti MG, Hrbac J, Prodromidis MI. Simultaneous determination of guanine and adenine in human saliva with graphite sparked screen-printed electrodes. Talanta 2021; 239:123119. [PMID: 34864536 DOI: 10.1016/j.talanta.2021.123119] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 11/24/2021] [Accepted: 11/29/2021] [Indexed: 12/18/2022]
Abstract
Saliva represents one of the most useful biological samples for non-invasive testing of health status and diseases prognosis and therefore, the development of advanced sensors enabling the determination of biomarkers in unspiked human whole saliva is of immense importance. Herein, we report on the development of a screen-printed graphite sensor modified with carbon nanomaterials generated by spark discharge for the determination of guanine and adenine in unspiked human whole saliva. The designed sensor was developed with a "green", extremely simple, fast (16 s), fully automated "linear mode" sparking process implemented with a 2D positioning device. Carbon nanomaterial-modified surfaces exhibit outstanding electrocatalytic properties enabling the determination of guanine and adenine over the concentration range 5 - 1000 nM and 25 - 1000 nM, while achieving limits of detection (S/N 3) as low as 2 nM and 8 nM, respectively. The sensor was successfully applied to the determination of purine bases in unspiked human whole saliva following a simple assay protocol based on ultrafiltration that effectively alleviates biofouling issues. Recovery was 96-108%.
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Affiliation(s)
| | - Maria G Trachioti
- Department of Chemistry, University of Ioannina, Ioannina, 45110, Greece
| | - Jan Hrbac
- Department of Chemistry, Masaryk University, 625 00, Brno, Czech Republic
| | - Mamas I Prodromidis
- Department of Chemistry, University of Ioannina, Ioannina, 45110, Greece; Institute of Materials Science and Computing, University Research Center of Ioannina (URCI), Ioannina, Greece.
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Healy B, Yu T, C. da Silva Alves D, Okeke C, Breslin CB. Cyclodextrins as Supramolecular Recognition Systems: Applications in the Fabrication of Electrochemical Sensors. MATERIALS (BASEL, SWITZERLAND) 2021; 14:1668. [PMID: 33800708 PMCID: PMC8036645 DOI: 10.3390/ma14071668] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 03/17/2021] [Accepted: 03/24/2021] [Indexed: 12/31/2022]
Abstract
Supramolecular chemistry, although focused mainly on noncovalent intermolecular and intramolecular interactions, which are considerably weaker than covalent interactions, can be employed to fabricate sensors with a remarkable affinity for a target analyte. In this review the development of cyclodextrin-based electrochemical sensors is described and discussed. Following a short introduction to the general properties of cyclodextrins and their ability to form inclusion complexes, the cyclodextrin-based sensors are introduced. This includes the combination of cyclodextrins with reduced graphene oxide, carbon nanotubes, conducting polymers, enzymes and aptamers, and electropolymerized cyclodextrin films. The applications of these materials as chiral recognition agents and biosensors and in the electrochemical detection of environmental contaminants, biomolecules and amino acids, drugs and flavonoids are reviewed and compared. Based on the papers reviewed, it is clear that cyclodextrins are promising molecular recognition agents in the creation of electrochemical sensors, chiral sensors, and biosensors. Moreover, they have been combined with a host of materials to enhance the detection of the target analytes. Nevertheless, challenges remain, including the development of more robust methods for the integration of cyclodextrins into the sensing unit.
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Affiliation(s)
- Bronach Healy
- Department of Chemistry, Maynooth University, Maynooth, Co. Kildare, Ireland; (B.H.); (T.Y.); (D.C.d.S.A.); (C.O.)
| | - Tian Yu
- Department of Chemistry, Maynooth University, Maynooth, Co. Kildare, Ireland; (B.H.); (T.Y.); (D.C.d.S.A.); (C.O.)
| | - Daniele C. da Silva Alves
- Department of Chemistry, Maynooth University, Maynooth, Co. Kildare, Ireland; (B.H.); (T.Y.); (D.C.d.S.A.); (C.O.)
- School of Chemistry and Food, Federal University of Rio Grande, Rio Grande 90040-060, Brazil
| | - Cynthia Okeke
- Department of Chemistry, Maynooth University, Maynooth, Co. Kildare, Ireland; (B.H.); (T.Y.); (D.C.d.S.A.); (C.O.)
| | - Carmel B. Breslin
- Department of Chemistry, Maynooth University, Maynooth, Co. Kildare, Ireland; (B.H.); (T.Y.); (D.C.d.S.A.); (C.O.)
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7
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Asrat T, Cho W, Liu FA, Shapiro SM, Bracht JR, Zestos AG. Direct Detection of DNA and RNA on Carbon Fiber Microelectrodes Using Fast-Scan Cyclic Voltammetry. ACS OMEGA 2021; 6:6571-6581. [PMID: 33748569 PMCID: PMC7970473 DOI: 10.1021/acsomega.0c04845] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Accepted: 02/18/2021] [Indexed: 05/04/2023]
Abstract
DNA and RNA have been measured with many techniques but often with relatively long analysis times. In this study, we utilize fast-scan cyclic voltammetry (FSCV) for the subsecond codetection of adenine, guanine, and cytosine, first as free nucleosides, and then within custom synthesized oligos, plasmid DNA, and RNA from the nematode Caenorhabditis elegans. Previous studies have shown the detection of adenosine and guanosine with FSCV with high spatiotemporal resolution, while we have extended the assay to include cytidine and adenine, guanine, and cytosine in RNA and single- and double-stranded DNA (ssDNA and dSDNA). We find that FSCV testing has a higher sensitivity and yields higher peak oxidative currents when detecting shorter oligonucleotides and ssDNA samples at equivalent nucleobase concentrations. This is consistent with an electrostatic repulsion from negatively charged oxide groups on the surface of the carbon fiber microelectrode (CFME), the negative holding potential, and the negatively charged phosphate backbone. Moreover, as opposed to dsDNA, ssDNA nucleobases are not hydrogen-bonded to one another and thus are free to adsorb onto the surface of the carbon electrode. We also demonstrate that the simultaneous determination of nucleobases is not masked even in biologically complex serum samples. This is the first report demonstrating that FSCV, when used with CFMEs, is able to codetect nucleobases when polymerized into DNA or RNA and could potentially pave the way for future uses in clinical, diagnostic, or research applications.
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Affiliation(s)
- Thomas
M. Asrat
- Department
of Chemistry, American University, Washington, D.C. 20016, United States
| | - Whirang Cho
- Department
of Chemistry, American University, Washington, D.C. 20016, United States
| | - Favian A. Liu
- Department
of Chemistry, American University, Washington, D.C. 20016, United States
| | - Sarah M. Shapiro
- Department
of Biology, American University, Washington, D.C. 20016, United States
| | - John R. Bracht
- Department
of Biology, American University, Washington, D.C. 20016, United States
| | - Alexander G. Zestos
- Department
of Chemistry, American University, Washington, D.C. 20016, United States
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8
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Jayadevimanoranjitham J, Narayanan SS. Fabrication of poly o-cresophthalein complexone film modified electrode and its application to simultaneous determination of purine bases in denatured DNA. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 108:110353. [PMID: 31923964 DOI: 10.1016/j.msec.2019.110353] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2019] [Revised: 10/18/2019] [Accepted: 10/20/2019] [Indexed: 12/18/2022]
Abstract
A novel poly o-cresophthalein complexone film (POCF) modified electrode was fabricated and used as a sensor for the simultaneous detection of adenine and guanine. By comparing with the bare paraffin wax impregnated graphite electrode (PIGE), POCF modified electrode showed remarkable increase in the oxidation peak currents of adenine and guanine. The surface morphology of the POC polymer film and its nature on the PIGE were characterized by field emission scanning electron microscopy, X-ray photoelectron spectroscopy, Raman spectroscopy, cyclic voltammetry, electrochemical impedance spectroscopy and differential pulse voltammetry. The POCF modified electrode exhibited a linear range of 0.08 μM-200 μM with a low detection limit of 0.02 μM (S/N) for adenine and guanine, respectively. Further, the proposed POCF modified electrode was used for simultaneous detection of adenine and guanine in denatured CT-DNA and moth DNA with satisfactory results. The value of (G + C)/(A + T) for CT-DNA and moth DNA was calculated to be 0.79 and 0.78 respectively. The prepared POCF modified electrode showed high reproducibility and excellent stability.
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Affiliation(s)
- J Jayadevimanoranjitham
- Department of Analytical Chemistry, School of Chemical Sciences, University of Madras, Guindy Campus, Chennai, 600 025, Tamil Nadu, India
| | - S Sriman Narayanan
- Department of Analytical Chemistry, School of Chemical Sciences, University of Madras, Guindy Campus, Chennai, 600 025, Tamil Nadu, India.
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9
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A succinct review of refined chemical sensor systems based on conducting polymer–cyclodextrin hybrids. J IND ENG CHEM 2019. [DOI: 10.1016/j.jiec.2019.06.051] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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10
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Ortolani TS, Pereira TS, Assumpção MH, Vicentini FC, Gabriel de Oliveira G, Janegitz BC. Electrochemical sensing of purines guanine and adenine using single-walled carbon nanohorns and nanocellulose. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2018.12.114] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Kumar Y, Pradhan S, Pramanik S, Bandyopadhyay R, Das DK, Pramanik P. Efficient electrochemical detection of guanine, uric acid and their mixture by composite of nano-particles of lanthanides ortho-ferrite XFeO3 (X = La, Gd, Pr, Dy, Sm, Ce and Tb). J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2018.10.021] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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12
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Zhang L, Zhang J. Multiporous molybdenum carbide nanosphere as a new charming electrode material for highly sensitive simultaneous detection of guanine and adenine. Biosens Bioelectron 2018; 110:218-224. [PMID: 29625329 DOI: 10.1016/j.bios.2018.03.064] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 03/17/2018] [Accepted: 03/28/2018] [Indexed: 12/12/2022]
Abstract
By introduction of Mo metal species (molybdenum-based polyoxometalates) into the Cu-MOF as co-precursor, molybdenum carbide nanosphere (MoxC@C) was prepared via a simple calcining routine and a further etching the metallic Cu process. The obtained MoxC@C showed a unique structure where well-dispersed MoxC nanoparticles (NPs) were encapsulated in porous carbon matrix. As-fabricated novel 3D porous architecture MoxC@C nanosphere exhibited a potent and persistent electro-oxidation behavior followed by well-separated oxidation peaks (peak to peak voltage is about 350 mV) toward adenine (A) and guanine (G) by differential pulse voltammetry (DPV). This excellent electrochemical performance can be attributed to the unique structure and composition of 3D MoxC@C. Furthermore, 3D MoxC@C also revealed high selectivity and sensitivity, good reproducibility, excellent stability and anti-interference ability. The calibration curves for quantitive analysis of G and A were obtained: 0.03-122 µM, and 0.02-122 µM, respectively, the detection limits were 0.0085 µM, 0.008 µM, respectively. The proposed procedure was successfully applied to detect G and A in human urine and serum samples with satisfactory recovery, which manifests its viability application for practical analysis.
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Affiliation(s)
- Lei Zhang
- College of Chemistry, Liaoning University, 66 Chongshan Middle Road, Shenyang, Liaoning 110036, People's Republic of China.
| | - Jing Zhang
- College of Chemistry, Liaoning University, 66 Chongshan Middle Road, Shenyang, Liaoning 110036, People's Republic of China
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13
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Wang M, Cui M, Liu W, Liu X, Xu B. Facile Synthesis of Cyclodextrin Functionalized Reduced Graphite Oxide with the Aid of Ionic Liquid for Simultaneous Determination of Guanine and Adenine. ELECTROANAL 2018. [DOI: 10.1002/elan.201700715] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Meiling Wang
- Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education; Taiyuan University of Technology, Taiyuan; Shanxi 030024 China
- Research Center on Advanced Materials Science and Technology; Taiyuan University of Technology, Taiyuan; Shanxi 030024 China
| | - Mingzhu Cui
- Institute of Crystalline Materials; Shanxi University, Taiyuan; Shanxi 030006 China
| | - Weifeng Liu
- Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education; Taiyuan University of Technology, Taiyuan; Shanxi 030024 China
- Research Center on Advanced Materials Science and Technology; Taiyuan University of Technology, Taiyuan; Shanxi 030024 China
| | - Xuguang Liu
- Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education; Taiyuan University of Technology, Taiyuan; Shanxi 030024 China
- Research Center on Advanced Materials Science and Technology; Taiyuan University of Technology, Taiyuan; Shanxi 030024 China
| | - Bingshe Xu
- Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education; Taiyuan University of Technology, Taiyuan; Shanxi 030024 China
- Research Center on Advanced Materials Science and Technology; Taiyuan University of Technology, Taiyuan; Shanxi 030024 China
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14
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Pradhan S, Biswas S, Das DK, Bhar R, Bandyopadhyay R, Pramanik P. An efficient electrode for simultaneous determination of guanine and adenine using nano-sized lead telluride with graphene. NEW J CHEM 2018. [DOI: 10.1039/c7nj03308g] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, lead telluride (PbTe) nanocrystals were chemically synthesized at room temperature via reduction of homogeneous mixtures of tartrate complexes of Pb2+ and Te4+ with sodium borohydride.
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Affiliation(s)
- Susmita Pradhan
- Department of Instrumentation Science
- Jadavpur University
- Kolkata-700032
- India
| | - Sudip Biswas
- Department of Instrumentation and Electronics Engineering
- Jadavpur University
- Kolkata-700098
- India
| | - Dipak K. Das
- Department of Chemistry and Nanoscience
- GLA University
- Mathura-281406
- India
| | - Radhaballabh Bhar
- Department of Instrumentation Science
- Jadavpur University
- Kolkata-700032
- India
| | - Rajib Bandyopadhyay
- Department of Instrumentation and Electronics Engineering
- Jadavpur University
- Kolkata-700098
- India
| | - Panchanan Pramanik
- Department of Chemistry and Nanoscience
- GLA University
- Mathura-281406
- India
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15
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Mousavi MF, Amiri M, Noori A, Khoshfetrat SM. A Prostate Specific Antigen Immunosensor Based on Biotinylated-Antibody/Cyclodextrin Inclusion Complex: Fabrication and Electrochemical Studies. ELECTROANAL 2017. [DOI: 10.1002/elan.201700363] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Mir F. Mousavi
- Department of Chemistry; Tarbiat Modares University; Tehran 14115-175 Iran, (Mir F. Mousavi)
| | - Masoud Amiri
- Department of Chemistry; Tarbiat Modares University; Tehran 14115-175 Iran, (Mir F. Mousavi)
| | - Abolhassan Noori
- Department of Chemistry; Tarbiat Modares University; Tehran 14115-175 Iran, (Mir F. Mousavi)
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16
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Jesny S, Girish Kumar K. Electrocatalytic resolution of guanine, adenine and cytosine along with uric acid on poly (4-amino-3-hydroxy naphthalene-1-sulfonic acid) modified glassy carbon electrode. J Electroanal Chem (Lausanne) 2017. [DOI: 10.1016/j.jelechem.2017.07.045] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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17
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Ensafi AA, Gorgabi-Khorzoughi M, Rezaei B, Jafari-Asl M. Electrochemical behavior of polyoxometalates decorated on poly diallyl dimethyl ammonium chloride-MWCNTs: A highly selective electrochemical sensor for determination of guanine and adenine. J Taiwan Inst Chem Eng 2017. [DOI: 10.1016/j.jtice.2017.06.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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18
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Analysis of the evolution of the detection limits of electrochemical nucleic acid biosensors II. Anal Bioanal Chem 2017; 409:4335-4352. [DOI: 10.1007/s00216-017-0377-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Revised: 04/11/2017] [Accepted: 04/21/2017] [Indexed: 01/07/2023]
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19
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Song H, Huo S, Dong J, Xu J. An Electrochemical Sensor Based on Gold Nanoparticles Incorporated in Mesoporous MFI Zeolite for Determination of Purine Bases in DNA. ELECTROANAL 2017. [DOI: 10.1002/elan.201600812] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Huixian Song
- NEST lab, Department of Chemistry; Shanghai University; Shanghai 200444 China
| | - Shijie Huo
- NEST lab, Department of Chemistry; Shanghai University; Shanghai 200444 China
| | - Junping Dong
- NEST lab, Department of Chemistry; Shanghai University; Shanghai 200444 China
| | - Jiaqiang Xu
- NEST lab, Department of Chemistry; Shanghai University; Shanghai 200444 China
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20
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Yue Y, Zhihong B, Sanming L, Kun Z. Electrochemical evaluation of antioxidant capacity in pharmaceutical antioxidant excipient of drugs on guanine-based modified electrode. J Electroanal Chem (Lausanne) 2016. [DOI: 10.1016/j.jelechem.2016.03.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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21
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A glassy carbon electrode modified with carboxylated diamond nanoparticles for differential pulse voltammetric simultaneous determination of guanine and adenine. Mikrochim Acta 2016. [DOI: 10.1007/s00604-016-1868-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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22
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Beigloo F, Noori A, Mehrgardi MA, Mousavi MF. Label-free and sensitive impedimetric nanosensor for the detection of cocaine based on a supramolecular complexation with β-cyclodextrin, immobilized on a nanostructured polymer film. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2015. [DOI: 10.1007/s13738-015-0778-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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23
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Zhang F, Zhao YY, Chen H, Wang XH, Chen Q, He PG. Sensitive fluorescence detection of lysozyme using a tris(bipyridine)ruthenium(ii) complex containing multiple cyclodextrins. Chem Commun (Camb) 2015; 51:6613-6. [DOI: 10.1039/c5cc00428d] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new series of metallocyclodextrins with increased fluorescence intensity upon binding with ssDNAs/aptamers has been demonstrated to sensitively detect lysozyme.
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Affiliation(s)
- Fan Zhang
- Department of Chemistry
- East China Normal University
- Shanghai 200241
- P. R. China
| | - Ying-Ying Zhao
- Department of Chemistry
- East China Normal University
- Shanghai 200241
- P. R. China
| | - Hong Chen
- Department of Chemistry
- East China Normal University
- Shanghai 200241
- P. R. China
| | - Xiu-Hua Wang
- Department of Chemistry
- East China Normal University
- Shanghai 200241
- P. R. China
| | - Qiong Chen
- Department of Chemistry
- East China Normal University
- Shanghai 200241
- P. R. China
| | - Pin-Gang He
- Department of Chemistry
- East China Normal University
- Shanghai 200241
- P. R. China
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24
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Mouslmani M, Bouhadir KH, Patra D. Poly (9-(2-diallylaminoethyl)adenine HCl-co-sulfur dioxide) deposited on silica nanoparticles constructs hierarchically ordered nanocapsules: curcumin conjugated nanocapsules as a novel strategy to amplify guanine selectivity among nucleobases. Biosens Bioelectron 2014; 68:181-188. [PMID: 25569875 DOI: 10.1016/j.bios.2014.12.036] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2014] [Revised: 12/11/2014] [Accepted: 12/15/2014] [Indexed: 10/24/2022]
Abstract
Poly (9-(2-diallylaminoethyl)adenine HCl-co-sulfur dioxide) (Poly A) deposited on silica nanoparticles self-assembles to form hierarchically ordered nanocapsules. These nanocapsules can be conjugated with curcumin. The curcumin-conjugated nanocapsules are found to be spherical in size and their size ranges between 200 and 600 nm. We found that curcumin conjugated with silica nanoparticles marginally shows a selectivity (∼20%) for guanine over adenine, cytosine, thymine and uracil, but this selectivity is extraordinarily amplified to more than 500% in curcumin-conjugated nanocapsules prepared from the above procedure. FT-IR spectra along with lifetime measurements suggest that specific interaction between adenine moieties of Poly A nanocapsules and thymine/uracil does not affect the fluorescence of poly A nanocapsules. Thus, the sensitivity and selectivity for guanine estimation is due to hydrophobic interactions, which are assisted by the low water solubility of guanine as compared to the other nucleobases. The present method illustrates a wider linear dynamic range in the higher concentration range as compared to the reported methods. Finally, the degradation study proves that stability of curcumin is improved dramatically in such nanocapsules demonstrating that nanotechnology could be a viable method to improve selectivity of specific analyte and robustness of probe molecule during fluorescence based bio-sensing.
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Affiliation(s)
- Mai Mouslmani
- Department of Chemistry, American University of Beirut, Beirut, Lebanon
| | - Kamal H Bouhadir
- Department of Chemistry, American University of Beirut, Beirut, Lebanon
| | - Digambara Patra
- Department of Chemistry, American University of Beirut, Beirut, Lebanon.
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25
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Cui Y, Yu J, Feng S. Nuclear fast red as highly sensitive “off/on” fluorescent probe for detecting guanine. Talanta 2014; 130:536-41. [DOI: 10.1016/j.talanta.2014.07.044] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Revised: 07/11/2014] [Accepted: 07/16/2014] [Indexed: 10/25/2022]
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26
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Wang Y, Chen H, Wu Y, Ge H, Ye G, Hu X. Metal–organic frameworks and β-cyclodextrin-based composite electrode for simultaneous quantification of guanine and adenine in a lab-on-valve manifold. Analyst 2014; 139:6197-203. [DOI: 10.1039/c4an00901k] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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27
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Hushegyi A, Tkac J. Are glycan biosensors an alternative to glycan microarrays? ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2014; 6:6610-6620. [PMID: 27231487 PMCID: PMC4878710 DOI: 10.1039/c4ay00692e] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Complex carbohydrates (glycans) play an important role in nature and study of their interaction with proteins or intact cells can be useful for understanding many physiological and pathological processes. Such interactions have been successfully interrogated in a highly parallel way using glycan microarrays, but this technique has some limitations. Thus, in recent years glycan biosensors in numerous progressive configurations have been developed offering distinct advantages compared to glycan microarrays. Thus, in this review advances achieved in the field of label-free glycan biosensors are discussed.
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Affiliation(s)
- A Hushegyi
- Department of Glycobiotechnology, Institute of Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, Bratislava 845 38, Slovakia
| | - J Tkac
- Department of Glycobiotechnology, Institute of Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, Bratislava 845 38, Slovakia
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Shaidarova LG, Gedmina AV, Zhaldak ER, Chelnokova IA, Budnikov GK. Selective voltammetric and flow-injection determination of guanine and adenine on a glassy carbon electrode modified by a ruthenium hexachloroplatinate film. JOURNAL OF ANALYTICAL CHEMISTRY 2014. [DOI: 10.1134/s1061934814080097] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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29
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Li F, Peng J, Wang J, Tang H, Tan L, Xie Q, Yao S. Carbon nanotube-based label-free electrochemical biosensor for sensitive detection of miRNA-24. Biosens Bioelectron 2014; 54:158-64. [DOI: 10.1016/j.bios.2013.10.061] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2013] [Revised: 10/20/2013] [Accepted: 10/29/2013] [Indexed: 01/07/2023]
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30
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Zhang X, Gu X, Qu K, Zhao C. Voltammetric Behavior of Semicarbazide at Graphene Modified Electrode and Application to Detection. J CHIN CHEM SOC-TAIP 2014. [DOI: 10.1002/jccs.201300530] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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31
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Electrochemical Biosensor consisted of conducting polymer layer on gold nanodots patterned Indium Tin Oxide electrode for rapid and simultaneous determination of purine bases. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2013.12.144] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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32
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Barman K, Jasimuddin S. Electrochemical detection of adenine and guanine using a self-assembled copper(ii)–thiophenyl-azo-imidazole complex monolayer modified gold electrode. RSC Adv 2014. [DOI: 10.1039/c4ra08568j] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A self-assembled copper(ii)–thiophenyl-azo-imidazole complex monolayer modified gold electrode exhibits an excellent electrochemical sensing ability towards adenine and guanine at physiological pH.
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Affiliation(s)
| | - Sk Jasimuddin
- Department of Chemistry
- Assam University
- Silchar, India
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33
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Chen Q, Chen H, Zhao Y, Zhang F, Yang F, Tang J, He P. A label-free electrochemiluminescence aptasensor for thrombin detection based on host-guest recognition between tris(bipyridine)ruthenium(II)-β-cyclodextrin and aptamer. Biosens Bioelectron 2013; 54:547-52. [PMID: 24321886 DOI: 10.1016/j.bios.2013.11.028] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2013] [Revised: 10/30/2013] [Accepted: 11/07/2013] [Indexed: 11/15/2022]
Abstract
An ultrasensitive label-free electrochemiluminescence (ECL) aptasensor for the detection of thrombin was developed based on the specific recognition between tris(bipyridine)ruthenium(II)-β-cyclodextrin (tris(bpyRu)-β-CD) and the anti-thrombin aptamer (aptamer). The NH2-aptamer was first immobilized on the activated glassy carbon electrode (GCE) by coupling interaction. By use of the specific recognition between tris(bpyRu)-β-CD and aptamer, tris(bpyRu)-β-CD was then attached on the surface of GCE. Resulting from the outstanding photoactive properties of tris(bpyRu)-β-CD, the fabricated GCE performed strong ECL signal with the coreactant of 2-(dibutylamino)ethanol (DBAE). However, in the presence of thrombin, aptamer-thrombin bioaffinity complexes were formed, which restricted the recognition activities between aptamer and tris(bpyRu)-β-CD. Thus, fewer tris(bpyRu)-β-CD could be attached on the surface of GCE and led to an obvious decrease of ECL signal. Fortunately, the difference of ECL intensity before and after combination with thrombin was logarithmically linear with the concentration of thrombin in a wide range of 10 nM-1 pM. Meantime, a detection limit of 0.1 pM without any other signal labeling or amplifying procedures indicated that the biosensor performed excellent sensitivity, operability and simplicity.
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Affiliation(s)
- Qiong Chen
- Department of Chemistry, State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200241, PR China
| | - Hong Chen
- Department of Chemistry, State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200241, PR China
| | - Yingying Zhao
- Department of Chemistry, State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200241, PR China
| | - Fan Zhang
- Department of Chemistry, State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200241, PR China
| | - Fan Yang
- Department of Chemistry, State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200241, PR China
| | - Jie Tang
- Department of Chemistry, State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200241, PR China
| | - Pingang He
- Department of Chemistry, State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200241, PR China.
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34
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Wei Y, Luo L, Ding Y, Liu X, Chu Y. A glassy carbon electrode modified with poly(eriochrome black T) for sensitive determination of adenine and guanine. Mikrochim Acta 2013. [DOI: 10.1007/s00604-013-1007-6] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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35
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Zhu C, Dong S. Energetic Graphene-Based Electrochemical Analytical Devices in Nucleic Acid, Protein and Cancer Diagnostics and Detection. ELECTROANAL 2013. [DOI: 10.1002/elan.201300056] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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36
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Shahrokhian S, Rastgar S, Amini M, Adeli M. Fabrication of a modified electrode based on Fe3O4NPs/MWCNT nanocomposite: Application to simultaneous determination of guanine and adenine in DNA. Bioelectrochemistry 2012; 86:78-86. [DOI: 10.1016/j.bioelechem.2012.02.004] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2011] [Revised: 02/05/2012] [Accepted: 02/11/2012] [Indexed: 10/28/2022]
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37
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References. Anal Chem 2012. [DOI: 10.1201/b11478-14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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38
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Affiliation(s)
- Emil Paleček
- Institute of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., Kralovopolska 135, 612
65 Brno, Czech Republic
| | - Martin Bartošík
- Institute of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., Kralovopolska 135, 612
65 Brno, Czech Republic
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39
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Xu Q, Liu Z, Hu X, Kong L, Liu S. Resonance Rayleigh scattering spectra of Cu2+–adenine–WO42− system and its analytical application. Analyst 2012; 137:868-74. [DOI: 10.1039/c2an15981c] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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40
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Abbaspour A, Noori A. A cyclodextrin host–guest recognition approach to a label-free electrochemical DNA hybridization biosensor. Analyst 2012; 137:1860-5. [DOI: 10.1039/c2an15683k] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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41
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Abbaspour A, Dehghani E, Noori A. Cyclodextrin Host-Guest Recognition Approach for Simultaneous Quantification and Voltammetric Studies of Levodopa and Carbidopa in Pharmaceutical Products. ELECTROANAL 2011. [DOI: 10.1002/elan.201100327] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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42
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CeO2 nanoparticles decorated multi-walled carbon nanotubes for electrochemical determination of guanine and adenine. Electrochim Acta 2011. [DOI: 10.1016/j.electacta.2011.07.048] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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43
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Khajehsharifi H, Eskandari Z. Potentiality of partial least-squares multivariate calibration in the spectrophotometric analysis of binary mixtures of purine bases. MONATSHEFTE FUR CHEMIE 2011. [DOI: 10.1007/s00706-011-0513-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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44
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Mandler D, Kraus-Ophir S. Self-assembled monolayers (SAMs) for electrochemical sensing. J Solid State Electrochem 2011. [DOI: 10.1007/s10008-011-1493-6] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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45
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Abbaspour A, Noori A. A cyclodextrin host-guest recognition approach to an electrochemical sensor for simultaneous quantification of serotonin and dopamine. Biosens Bioelectron 2011; 26:4674-80. [PMID: 21715153 DOI: 10.1016/j.bios.2011.04.061] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2011] [Revised: 04/22/2011] [Accepted: 04/25/2011] [Indexed: 02/05/2023]
Abstract
An electrochemical sensor for simultaneous quantification of serotonin (5-hydroxytryptamine, 5-HT) and dopamine (DA) using a β-cyclodextrin/poly(N-acetylaniline)/carbon nanotube composite modified carbon paste electrode has been developed. Synergistic effect of multi-walled carbon nanotube (MWCNT) in addition to the pre-concentrating effect of β-cyclodextrin (β-CD) as well as its different inclusion complex stability with 5-HT and DA was used to construct an electrochemical sensor for quantification of these important neurotransmitters. The overlapping anodic peaks of 5-HT and DA at 428 mV on bare electrode resolved in two well-defined voltammetric peaks at 202 and 363 mV vs. Ag/AgCl respectively. The oxidation mechanism of 5-HT and DA on the surface of the electrode was investigated by cyclic voltammetry and it was found that the electrode processes are pH dependent and electrochemical oxidation of 5-HT is totally irreversible while the electrode gave a more reversible process to DA. Under optimized conditions, linear calibration curves were obtained in the range of about 4-200 μM with a detection limits down to sub-μM levels (S/N=3) after 20-s accumulation, for both. The proposed sensor was shown to be remarkably selective for 5-HT and DA in matrices containing different species including ascorbic acid and uric acid. The suitability of the developed method was tested for the determination of 5-HT and DA in the Randox Synthetic Plasma samples and acceptable recoveries were obtained for a set of spiked samples.
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Affiliation(s)
- Abdolkarim Abbaspour
- Chemistry Department, College of Sciences, Shiraz University, Shiraz 7145685464, Iran.
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46
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Jang YC, Jha SK, Chand R, Islam K, Kim YS. Capillary electrophoresis microchip for direct amperometric detection of DNA fragments. Electrophoresis 2011; 32:913-9. [DOI: 10.1002/elps.201000697] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2010] [Revised: 01/10/2011] [Accepted: 01/10/2011] [Indexed: 12/22/2022]
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Zhao J, Jin J, Wu C, Jiang H, Zhou Y, Zuo J, Wang X. Highly sensitive identification of cancer cells by combining the new tetrathiafulvalene derivative with a β-cyclodextrin/multi-walled carbon nanotubes modified GCE. Analyst 2010; 135:2965-9. [PMID: 20838668 DOI: 10.1039/c0an00338g] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this contribution, we have prepared and explored a novel nano-interface based probe for the rapid identification and highly sensitive detection of cancer cells by means of an electrochemical study. The new probe tetrathiafulvalene (TTF) carboxylate salt (TTF-(COONBu(4))(2), ditetrabutylammonium salt for propylenedithio-4',5'-tetrathiafulvalene-4,5-dicarboxylate), which has specific spectral and electrochemical properties, has been synthesized and assembled with carbon nanotubes to form a new type of nanocomposite. A simple method of fabricating the β-CD/MWCNT modified electrodes based on functionalized multi-walled carbon nanotubes (MWCNTs) and β-cyclodextrin (β-CD) has been explored by using glassy carbon electrodes (GCEs), which could remarkably enhance the sensitivity of the biomolecular detection. Our results demonstrate that the combination of the new probe TTF-(COONBu(4))(2) with β-CD/MWCNT modified electrodes could be readily utilized to sensitively detect cancer cells such as liver cancer cells SMMC-7721 and HepG2, drug sensitive leukemia K562/B.W cells and drug resistant leukemia K562/ADM cells, with a detection limit of ~10(3) cells mL(-1). This may provide a novel strategy for the potential and promising application of the new TTF molecular probe in the development of multi-signal responsive biosensors for the early diagnosis of cancers.
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Affiliation(s)
- Juan Zhao
- State Key Laboratory of Bioelectronics (Chien-Shiung Wu Laboratory), Southeast University, Nanjing 210096, People's Republic of China
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48
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Abbaspour A, Ghaffarinejad A. Preparation of a sol–gel-derived carbon nanotube ceramic electrode by microwave irradiation and its application for the determination of adenine and guanine. Electrochim Acta 2010. [DOI: 10.1016/j.electacta.2009.09.065] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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