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Lee MH, Lin CC, Sharma PS, Thomas JL, Lin CY, Iskierko Z, Borowicz P, Lin CY, Kutner W, Yang CH, Lin HY. Peptide Selection of MMP-1 for Electrochemical Sensing with Epitope-Imprinted Poly(TPARA- co-EDOT)s. BIOSENSORS 2022; 12:bios12111018. [PMID: 36421137 PMCID: PMC9688374 DOI: 10.3390/bios12111018] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 11/07/2022] [Accepted: 11/10/2022] [Indexed: 06/01/2023]
Abstract
Instead of molecularly imprinting a whole protein molecule, imprinting protein epitopes is gaining popularity due to cost and solubility issues. Belonging to the matrix metalloproteinase protein family, MMP-1 is an interstitial collagenase that degrades collagen and may be involved in cell migration, cell proliferation, the pro-inflammatory effect, and cancer progression. Hence, it can serve as a disease protein biomarker and thus be useful in early diagnosis. Herein, epitopes of MMP-1 were identified by screening its crystal structure. To identify possible epitopes for imprinting, MMP-1 was cleaved in silico with trypsin, pepsin at pH = 1.3, and pepsin at pH > 2.0 using Peptide Cutter, generating peptide fragments containing 8 to 12 amino acids. Five criteria were applied to select the peptides most suitable as potential epitopes for MMP-1. The triphenylamine rhodanine-3-acetic acid (TPARA) functional monomer was synthesized to form a stable pre-polymerization complex with a selected template epitope. The complexed functional monomer was then copolymerized with 3,4-ethoxylenedioxythiophene (EDOT) using potentiodynamic electropolymerization onto indium−tin−oxide (ITO) electrodes. The composition of the molecularly imprinted poly(TPARA-co-EDOT) (MIP) was optimized by maximizing the film’s electrical conductivity. Cyclic voltammetry was used to determine MMP-1 concentration in the presence of the Fe(CN)63−/Fe(CN)64− redox probe actuating the “gate effect.” A calibration curve was constructed and used to determine the usable concentration range and the limit of detection as ca. 0.001 to 10.0 pg/mL and 0.2 fg/mL MMP-1, respectively. Finally, the MMP-1 concentration in the A549 human lung (carcinoma) culture medium was measured, and this determination accuracy was confirmed using an ELISA assay.
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Affiliation(s)
- Mei-Hwa Lee
- Department of Materials Science and Engineering, I-Shou University, Kaohsiung 84001, Taiwan
| | - Cheng-Chih Lin
- Division of Pulmonary Medicine, Department of Internal Medicine, Armed-Forces Zuoying General Hospital, Kaohsiung 81342, Taiwan
| | - Piyush Sindhu Sharma
- Institute of Physical Chemistry, Polish Academy of Sciences, 01-224 Warsaw, Poland
| | - James L. Thomas
- Department of Physics and Astronomy, University of New Mexico, Albuquerque, NM 87131, USA
| | - Chu-Yun Lin
- Faculty of Mathematics and Natural Sciences, School of Sciences, Institute of Chemical Sciences, Cardinal Stefan Wyszynski University in Warsaw, 01-815 Warsaw, Poland
| | - Zofia Iskierko
- Institute of Physical Chemistry, Polish Academy of Sciences, 01-224 Warsaw, Poland
| | - Paweł Borowicz
- Institute of Physical Chemistry, Polish Academy of Sciences, 01-224 Warsaw, Poland
| | - Chien-Yu Lin
- Faculty of Mathematics and Natural Sciences, School of Sciences, Institute of Chemical Sciences, Cardinal Stefan Wyszynski University in Warsaw, 01-815 Warsaw, Poland
| | - Wlodzimierz Kutner
- Institute of Physical Chemistry, Polish Academy of Sciences, 01-224 Warsaw, Poland
- Faculty of Mathematics and Natural Sciences, School of Sciences, Institute of Chemical Sciences, Cardinal Stefan Wyszynski University in Warsaw, 01-815 Warsaw, Poland
| | - Chien-Hsin Yang
- Department of Chemical and Materials Engineering, National University of Kaohsiung, Kaohsiung 81148, Taiwan
| | - Hung-Yin Lin
- Department of Chemical and Materials Engineering, National University of Kaohsiung, Kaohsiung 81148, Taiwan
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2
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One step construction of an electrochemical sensor for melamine detection in milk towards an integrated portable system. Food Chem 2022; 383:132403. [PMID: 35158131 DOI: 10.1016/j.foodchem.2022.132403] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Revised: 01/28/2022] [Accepted: 02/07/2022] [Indexed: 12/27/2022]
Abstract
Excessive intake of melamine (MEL) can be harmful to human health, and it is important to establish a rapid and accurate MEL detection method. As the electrochemical activity of MEL is very low, ferrocenylglutathione (Fc-ECG) was used as an electron transfer mediator to assist with the detection of MEL using screen-printed carbon electrode (SPCE). This modified electrode (MEL/Fc-ECG/SPCE) was prepared by stepwise drop-casting and was fully characterized. Results showed that MEL significantly enhanced signal of Fc-ECG/SPCE sensor due to the three p-π conjugated double bonds that facilitated electron transfer. Under optimal conditions, the sensor exhibits two linearities in the range of 0.20-2.00 μM and 8.00-800 μM, with a sensitivity of 15.03 μA·μM-1·cm-2. The selectivity, stability, and reproducibility were investigated and successfully used to detect MEL in raw milk and confirms safety verification of foods. Moreover, a portable testing platform was designed for MEL detection based on a CH32 chip.
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Liu KH, Lin HY, Thomas JL, Chen CY, Chen YT, Chen CY, Yang CH, Lee MH. Sensing of C-Reactive Protein Using an Extended-Gate Field-Effect Transistor with a Tungsten Disulfide-Doped Peptide-Imprinted Conductive Polymer Coating. BIOSENSORS 2022; 12:bios12010031. [PMID: 35049659 PMCID: PMC8774123 DOI: 10.3390/bios12010031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Revised: 12/31/2021] [Accepted: 01/03/2022] [Indexed: 05/06/2023]
Abstract
C-reactive protein (CRP) is a non-specific biomarker of inflammation and may be associated with cardiovascular disease. In recent studies, systemic inflammatory responses have also been observed in cases of coronavirus disease 2019 (COVID-19). Molecularly imprinted polymers (MIPs) have been developed to replace natural antibodies with polymeric materials that have low cost and high stability and could thus be suitable for use in a home-care system. In this work, a MIP-based electrochemical sensing system for measuring CRP was developed. Such a system can be integrated with microfluidics and electronics for lab-on-a-chip technology. MIP composition was optimized using various imprinting template (CRP peptide) concentrations. Tungsten disulfide (WS2) was doped into the MIPs. Doping not only enhances the electrochemical response accompanying the recognition of the template molecules but also raises the top of the sensing range from 1.0 pg/mL to 1.0 ng/mL of the imprinted peptide. The calibration curve of the WS2-doped peptide-imprinted polymer-coated electrodes in the extended-gate field-effect transistor platform was obtained and used for the measurement of CRP concentration in real human serum.
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Affiliation(s)
- Kai-Hsi Liu
- Department of Electrical Engineering, National University of Kaohsiung, Kaohsiung 81148, Taiwan; (K.-H.L.); (C.-Y.C.)
- Department of Internal Medicine, Division of Cardiology, Zuoying Branch of Kaohsiung Armed Forces General Hospital, Kaohsiung 81342, Taiwan
| | - Hung-Yin Lin
- Department of Chemical and Materials Engineering, National University of Kaohsiung, Kaohsiung 81148, Taiwan; (H.-Y.L.); (C.-Y.C.)
| | - James L. Thomas
- Department of Physics and Astronomy, University of New Mexico, Albuquerque, NM 87131, USA;
| | - Chen-Yuan Chen
- Department of Chemical and Materials Engineering, National University of Kaohsiung, Kaohsiung 81148, Taiwan; (H.-Y.L.); (C.-Y.C.)
| | - Yen-Ting Chen
- Interdisciplinary Program of Electrical Engineering and Computer Science, National Taiwan University of Science and Technology, Taipei 10607, Taiwan;
| | - Chuen-Yau Chen
- Department of Electrical Engineering, National University of Kaohsiung, Kaohsiung 81148, Taiwan; (K.-H.L.); (C.-Y.C.)
| | - Chien-Hsin Yang
- Department of Chemical and Materials Engineering, National University of Kaohsiung, Kaohsiung 81148, Taiwan; (H.-Y.L.); (C.-Y.C.)
- Correspondence: (C.-H.Y.); (M.-H.L.)
| | - Mei-Hwa Lee
- Department of Materials Science and Engineering, I-Shou University, Kaohsiung 84001, Taiwan
- Correspondence: (C.-H.Y.); (M.-H.L.)
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Barros Azeredo NF, Ferreira Santos MS, Sempionatto JR, Wang J, Angnes L. Screen-Printed Technologies Combined with Flow Analysis Techniques: Moving from Benchtop to Everywhere. Anal Chem 2021; 94:250-268. [PMID: 34851628 DOI: 10.1021/acs.analchem.1c02637] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Screen-printed electrodes (SPEs) coupled with flow systems have been reported in recent decades for an ever-growing number of applications in modern electroanalysis, aiming for portable methodologies. The information acquired through this combination can be attractive for future users with basic knowledge, especially due to the increased measurement throughput, reduction in reagent consumption and minimal waste generation. The trends and possibilities of this set rely on the synergistic behavior that maximizes both SPE and flow analyses characteristics, allowing mass production and automation. This overview addresses an in-depth update about the scope of samples, target analytes, and analytical throughput (injections per hour, limits of detection, linear range, etc.) obtained by coupling injection techniques (FIA, SIA, and BIA) with SPE-based electrochemical detection.
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Affiliation(s)
- Nathália Florência Barros Azeredo
- Institute of Chemistry, University of São Paulo, São Paulo 05508-070, Brazil.,Department of Nanoengineering, University of California San Diego, La Jolla, California 92093, United States
| | | | - Juliane R Sempionatto
- Department of Nanoengineering, University of California San Diego, La Jolla, California 92093, United States
| | - Joseph Wang
- Department of Nanoengineering, University of California San Diego, La Jolla, California 92093, United States
| | - Lúcio Angnes
- Institute of Chemistry, University of São Paulo, São Paulo 05508-070, Brazil
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5
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Sadok I, Staniszewska M. Electrochemical Determination of Kynurenine Pathway Metabolites-Challenges and Perspectives. SENSORS (BASEL, SWITZERLAND) 2021; 21:7152. [PMID: 34770460 PMCID: PMC8588338 DOI: 10.3390/s21217152] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 10/22/2021] [Accepted: 10/24/2021] [Indexed: 12/23/2022]
Abstract
In recent years, tryptophan metabolism via the kynurenine pathway has become one of the most active research areas thanks to its involvement in a variety of physiological processes, especially in conditions associated with immune dysfunction, central nervous system disorders, autoimmunity, infection, diabetes, and cancer. The kynurenine pathway generates several metabolites with immunosuppressive functions or neuroprotective, antioxidant, or toxic properties. An increasing body of work on this topic uncovers a need for reliable analytical methods to help identify and quantify tryptophan metabolites at physiological concentrations in biological samples of different origins. Recent methodological advances in the fabrication and application of electrochemical sensors promise a rise in the future generation of novel analytical systems. This work summarizes current knowledge and provides important suggestions with respect to direct electrochemical determinations of kynurenine pathway metabolites (kynurenines) in complex biological matrices. Measurement challenges, limitations, and future opportunities of electroanalytical methods to advance study of the implementation of kynurenines in disease conditions are discussed.
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Affiliation(s)
- Ilona Sadok
- Laboratory of Separation and Spectroscopic Method Applications, Centre for Interdisciplinary Research, Faculty of Science and Health, The John Paul II Catholic University of Lublin, 20-708 Lublin, Poland;
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Lee MH, Thomas JL, Su ZL, Yeh WK, Monzel AS, Bolognin S, Schwamborn JC, Yang CH, Lin HY. Epitope imprinting of alpha-synuclein for sensing in Parkinson's brain organoid culture medium. Biosens Bioelectron 2020; 175:112852. [PMID: 33288425 DOI: 10.1016/j.bios.2020.112852] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 11/19/2020] [Accepted: 11/23/2020] [Indexed: 02/09/2023]
Abstract
Parkinson's disease (PD) is a progressive nervous system disorder that affects movement, whose early signs may be mild and unnoticed. α-Synuclein has been identified as the major component of Lewy bodies and Lewy neurites, which are the characteristic proteinaceous deposits that are the hallmarks of PD. In this work, three alpha-synuclein peptides were synthesized as templates for the molecular imprinting of conductive polymers to enable recognition of alpha-synuclein via ultrasensitive electrochemical measurements. The peptide sequences encompassed specific residues where mutations are known to accelerate PD (though the target sequences, in this study, were wild-type.) The different peptide targets were all successfully imprinted, but with differing imprinting effectiveness, probably owing to differences in target carboxylic acids (which can bind to the aniline (AN) m-aminobenzenesulfonic acid (MSAN) MIP polymers.) Composition of the imprinted polymer, (the mole proportions of AN and MSAN), and the concentrations and sequences of imprinted peptide templates were optimized by measuring the electrochemical responses to target peptides. The imprinted electrode can detect alpha-synuclein at fg/mL levels, and was therefore used to measure alpha-synuclein in the culture medium of human brain organoids generated from normal and idiopathic PD patients.
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Affiliation(s)
- Mei-Hwa Lee
- Department of Materials Science and Engineering, I-Shou University, Kaohsiung, 84001, Taiwan
| | - James L Thomas
- Department of Physics and Astronomy, University of New Mexico, Albuquerque, NM, 87131, USA
| | - Zi-Lin Su
- Department of Chemical and Materials Engineering, National University of Kaohsiung, Kaohsiung, 81148, Taiwan
| | - Wen-Kuan Yeh
- Department of Electrical Engineering, National University of Kaohsiung, Kaohsiung, 81148, Taiwan; Taiwan Semiconductor Research Institute, Hsinchu, 30009, Taiwan
| | - Anna S Monzel
- Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, Belvaux, L-4367, Luxembourg
| | - Silvia Bolognin
- Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, Belvaux, L-4367, Luxembourg
| | - Jens C Schwamborn
- Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, Belvaux, L-4367, Luxembourg
| | - Chien-Hsin Yang
- Department of Chemical and Materials Engineering, National University of Kaohsiung, Kaohsiung, 81148, Taiwan
| | - Hung-Yin Lin
- Department of Chemical and Materials Engineering, National University of Kaohsiung, Kaohsiung, 81148, Taiwan.
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Squissato AL, Munoz RAA, Banks CE, Richter EM. An Overview of Recent Electroanalytical Applications Utilizing Screen‐Printed Electrodes Within Flow Systems. ChemElectroChem 2020. [DOI: 10.1002/celc.202000175] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- André L. Squissato
- Institute of Chemistry Federal University of Uberlandia Av. João Naves de Ávila 2121 – Uberlandia, Minas Gerais Brazil
| | - Rodrigo A. A. Munoz
- Institute of Chemistry Federal University of Uberlandia Av. João Naves de Ávila 2121 – Uberlandia, Minas Gerais Brazil
| | - Craig E. Banks
- Faculty of Science and Engineering Manchester Metropolitan University Chester Street Manchester M1 5GD UK
| | - Eduardo M. Richter
- Institute of Chemistry Federal University of Uberlandia Av. João Naves de Ávila 2121 – Uberlandia, Minas Gerais Brazil
- Faculty of Science and Engineering Manchester Metropolitan University Chester Street Manchester M1 5GD UK
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8
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Liu KH, O’Hare D, Thomas JL, Guo HZ, Yang CH, Lee MH. Self-assembly Synthesis of Molecularly Imprinted Polymers for the Ultrasensitive Electrochemical Determination of Testosterone. BIOSENSORS 2020; 10:E16. [PMID: 32120922 PMCID: PMC7146556 DOI: 10.3390/bios10030016] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 02/21/2020] [Accepted: 02/25/2020] [Indexed: 05/05/2023]
Abstract
Molecularly imprinted polymers (MIPs) can often bind target molecules with high selectivity and specificity. When used as MIPs, conductive polymers may have unique binding capabilities; they often contain aromatic rings and functional groups, which can undergo π-π and hydrogen bonding interactions with similarly structured target (or template) molecules. In this work, an electrochemical method was used to optimize the synthetic self-assembly of poly(aniline-co-metanilic acid) and testosterone, forming testosterone-imprinted electronically conductive polymers (TIECPs) on sensing electrodes. The linear sensing range for testosterone was from 0.1 to 100 pg/mL, and the limit of detection was as low as ~pM. Random urine samples were collected and diluted 1000-fold to measure testosterone concentration using the above TIECP sensors; results were compared with a commercial ARCHITECT ci 8200 system. The testosterone concentrations in the tested samples were in the range of 0.33 ± 0.09 to 9.13 ± 1.33 ng/mL. The mean accuracy of the TIECP-coated sensors was 90.3 ± 7.0%.
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Affiliation(s)
- Kai-Hsi Liu
- Department of Internal Medicine, Division of Cardiology, Zuoying Branch of Kaohsiung Armed Forces General Hospital, Kaohsiung 813, Taiwan;
- Department of Chemical and Materials Engineering, National University of Kaohsiung, Kaohsiung 81148, Taiwan;
| | - Danny O’Hare
- Department of Bioengineering, Imperial College, London SW7 2BY, UK;
| | - James L. Thomas
- Department of Physics and Astronomy, University of New Mexico, Albuquerque, NM 87131, USA;
| | - Han-Zhang Guo
- Department of Chemical and Materials Engineering, National University of Kaohsiung, Kaohsiung 81148, Taiwan;
| | - Chien-Hsin Yang
- Department of Chemical and Materials Engineering, National University of Kaohsiung, Kaohsiung 81148, Taiwan;
| | - Mei-Hwa Lee
- Department of Materials Science and Engineering, I-Shou University, Kaohsiung 84001, Taiwan
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Xu Y, Dai Y, Li C, Zhang H, Guo M, Yang Y. PC software-based portable cyclic voltammetry system with PB-MCNT-GNPs-modified electrodes for E. coli detection. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2020; 91:014103. [PMID: 32012638 DOI: 10.1063/1.5113655] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Accepted: 12/19/2019] [Indexed: 06/10/2023]
Abstract
PC software-based portable cyclic voltammetry (PCV) systems have the advantages of portability, high performance, and real-time detection. In this paper, the PCV system used cyclic voltammetry (CV) as the main detection and analysis method and contained the following components: a three-electrode unit, a portable potentiostat, and PC software. The PC software was used as the system control and display, and a dynamic peak position adjustment (DPPA) algorithm for E. coli measurements based on thick biofilm modification on electrodes was designed especially for this system to realize the real-time correspondence between the measured results and the modified electrodes. The performance test results obtained by setting different detection parameters in the PCV system were compared with those of commercial electrochemical workstations. The difference was less than 4.99%, with a relative standard deviation less than 0.20%. An electrochemical biosensor based on a Prussian blue-multiwalled carbon nanotube-gold nanoparticle composite was developed for E. coli detection. After constructing an antibody-BSA-E. coli electrode modification on the sensor, experimental data processed by the DPPA algorithm showed that the logarithm (lg DfE.coli) of the E. coli dilution factor and the peak current response had a linear relationship. The PCV system could quickly and accurately detect E. coli concentrations with dynamic adjustment algorithms for biofilm-modified electrodes. Furthermore, the system could detect the electrochemical activities of various high-sensitivity biomolecules, showing great detection potential for on-site monitoring and meeting the requirements of real-time and portable detection in various food safety fields.
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Affiliation(s)
- Ying Xu
- College of Automation, Hangzhou Dianzi University, Xiasha Higher Education Zone, Hangzhou 310018, Zhejiang Province, China
| | - Yan Dai
- College of Automation, Hangzhou Dianzi University, Xiasha Higher Education Zone, Hangzhou 310018, Zhejiang Province, China
| | - Chao Li
- College of Automation, Hangzhou Dianzi University, Xiasha Higher Education Zone, Hangzhou 310018, Zhejiang Province, China
| | - Haijing Zhang
- College of Automation, Hangzhou Dianzi University, Xiasha Higher Education Zone, Hangzhou 310018, Zhejiang Province, China
| | - Miao Guo
- College of Automation, Hangzhou Dianzi University, Xiasha Higher Education Zone, Hangzhou 310018, Zhejiang Province, China
| | - Yong Yang
- College of Automation, Hangzhou Dianzi University, Xiasha Higher Education Zone, Hangzhou 310018, Zhejiang Province, China
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Lee MH, Thomas JL, Su ZL, Zhang ZX, Lin CY, Huang YS, Yang CH, Lin HY. Doping of transition metal dichalcogenides in molecularly imprinted conductive polymers for the ultrasensitive determination of 17β-estradiol in eel serum. Biosens Bioelectron 2019; 150:111901. [PMID: 31767344 DOI: 10.1016/j.bios.2019.111901] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2019] [Revised: 11/15/2019] [Accepted: 11/15/2019] [Indexed: 12/18/2022]
Abstract
Molecularly imprinted polymers (MIPs) have been developed to replace antibodies for the recognition of target molecules (such as antigens), and have been integrated into electrochemical sensing approaches by polymerization onto an electrode. Electrochemical sensing is inexpensive and flexible, and has demonstrated utility in point-of-care devices. In this work, several 2D (conductive) materials were employed to improve the performance of MIP sensors. Screen-printed electrodes were coated by the electropolymerization of aniline and metanilic acid, commingled with target molecules and various 2D materials. Tungsten disulfide (WS2) with an average particle size of 2 μm was found to increase the sensitivity of detection of molecularly imprinted conductive polymer-coated electrodes to 17β-estradiol. As estradiol concentrations are important to eel aquaculture, we screened eel serum samples to determine their 17β-estradiol concentrations, which were found to be in the range 28.2 ± 3.6 to 73.0 ± 11.6 pg/mL after dilution. These results were in agreement with measurements using commercial immunoanalysis.
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Affiliation(s)
- Mei-Hwa Lee
- Department of Materials Science and Engineering, I-Shou University, Kaohsiung, 84001, Taiwan
| | - James L Thomas
- Department of Physics and Astronomy, University of New Mexico, Albuquerque, NM, 87131, USA
| | - Zi-Lin Su
- Department of Chemical and Materials Engineering, National University of Kaohsiung, Kaohsiung, 81148, Taiwan
| | - Zheng-Xiang Zhang
- Department of Chemical and Materials Engineering, National University of Kaohsiung, Kaohsiung, 81148, Taiwan
| | - Chu-Yun Lin
- Department of Chemical and Materials Engineering, National University of Kaohsiung, Kaohsiung, 81148, Taiwan
| | - Yung-Sen Huang
- Department of Life Sciences, National University of Kaohsiung, Kaohsiung, 81148, Taiwan
| | - Chien-Hsin Yang
- Department of Chemical and Materials Engineering, National University of Kaohsiung, Kaohsiung, 81148, Taiwan
| | - Hung-Yin Lin
- Department of Chemical and Materials Engineering, National University of Kaohsiung, Kaohsiung, 81148, Taiwan.
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Lee MH, Thomas JL, Liu WC, Zhang ZX, Liu BD, Yang CH, Lin HY. A multichannel system integrating molecularly imprinted conductive polymers for ultrasensitive voltammetric determination of four steroid hormones in urine. Mikrochim Acta 2019; 186:695. [PMID: 31612312 DOI: 10.1007/s00604-019-3797-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Accepted: 09/07/2019] [Indexed: 11/30/2022]
Abstract
This work reports on a modularized electrochemical method for the determination of the hormones cortisol, progesterone, testosterone and 17β-estradiol in urine. These hormones were employed as templates when generating molecular imprints from aniline and metanilic acid by electropolymerization on the surface of screen-printed electrodes. The electrically conductive imprint was characterized by SEM, AFM and cyclic voltammetry. A four-channel system was then established to enable simultaneous determination of the hormones by cyclic voltammetry. The detection limits for cortisol, progesterone, testosterone and 17β-estradiol are as low as 2, 2.5, 10 and 9 ag·mL-1 (for S/N = 3). Graphical abstract A four-channel system was established to enable simultaneous determination of 4 steroid hormones by cyclic voltammetry and by using moleculalry imprinted polymers.
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Affiliation(s)
- Mei-Hwa Lee
- Department of Materials Science and Engineering, I-Shou University, Kaohsiung, 84001, Taiwan
| | - James L Thomas
- Department of Physics and Astronomy, University of New Mexico, Albuquerque, NM, 87131, USA
| | - Wei-Chiun Liu
- Department of Electrical Engineering, National Cheng Kung University, Tainan, 701, Taiwan
| | - Zheng-Xiang Zhang
- Department of Chemical and Materials Engineering, National University of Kaohsiung (NUK), 700, Kaohsiung University Rd., Nan-Tzu District, Kaohsiung, 81148, Taiwan
| | - Bin-Da Liu
- Department of Electrical Engineering, National Cheng Kung University, Tainan, 701, Taiwan
| | - Chien-Hsin Yang
- Department of Chemical and Materials Engineering, National University of Kaohsiung (NUK), 700, Kaohsiung University Rd., Nan-Tzu District, Kaohsiung, 81148, Taiwan.
| | - Hung-Yin Lin
- Department of Chemical and Materials Engineering, National University of Kaohsiung (NUK), 700, Kaohsiung University Rd., Nan-Tzu District, Kaohsiung, 81148, Taiwan.
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A real-time-range potentiostat coupled to nano-Au-modified microband electrode array for high-speed stripping determination of human blood lead. Biosens Bioelectron 2017; 97:267-272. [DOI: 10.1016/j.bios.2017.06.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 05/25/2017] [Accepted: 06/05/2017] [Indexed: 02/07/2023]
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Jung J, Lee J, Shin S, Kim YT. Development of a Telemetric, Miniaturized Electrochemical Amperometric Analyzer. SENSORS (BASEL, SWITZERLAND) 2017; 17:E2416. [PMID: 29065534 PMCID: PMC5677258 DOI: 10.3390/s17102416] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 10/16/2017] [Accepted: 10/20/2017] [Indexed: 01/14/2023]
Abstract
In this research, we developed a portable, three-electrode electrochemical amperometric analyzer that can transmit data to a PC or a tablet via Bluetooth communication. We performed experiments using an indium tin oxide (ITO) glass electrode to confirm the performance and reliability of the analyzer. The proposed analyzer uses a current-to-voltage (I/V) converter to convert the current generated by the reduction-oxidation (redox) reaction of the buffer solution to a voltage signal. This signal is then digitized by the processor. The configuration of the power and ground of the printed circuit board (PCB) layer is divided into digital and analog parts to minimize the noise interference of each part. The proposed analyzer occupies an area of 5.9 × 3.25 cm² with a current resolution of 0.4 nA. A potential of 0~2.1 V can be applied between the working and the counter electrodes. The results of this study showed the accuracy of the proposed analyzer by measuring the Ruthenium(III) chloride ( Ru III ) concentration in 10 mM phosphate-buffered saline (PBS) solution with a pH of 7.4. The measured data can be transmitted to a PC or a mobile such as a smartphone or a tablet PC using the included Bluetooth module. The proposed analyzer uses a 3.7 V, 120 mAh lithium polymer battery and can be operated for 60 min when fully charged, including data processing and wireless communication.
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Affiliation(s)
- Jaehyo Jung
- IT Fusion Technology Research Center, Department of IT Fusion Technology, Chosun University, 309 Pilmun-daero, Dong-gu, Gwangju 61452, Korea.
| | - Jihoon Lee
- IT Fusion Technology Research Center, Department of IT Fusion Technology, Chosun University, 309 Pilmun-daero, Dong-gu, Gwangju 61452, Korea.
| | - Siho Shin
- IT Fusion Technology Research Center, Department of IT Fusion Technology, Chosun University, 309 Pilmun-daero, Dong-gu, Gwangju 61452, Korea.
| | - Youn Tae Kim
- IT Fusion Technology Research Center, Department of IT Fusion Technology, Chosun University, 309 Pilmun-daero, Dong-gu, Gwangju 61452, Korea.
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14
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Luo SC, Thomas JL, Guo HZ, Liao WT, Lee MH, Lin HY. Electrosynthesis of Nanostructured, Imprinted Poly(hydroxymethyl 3,4-ethylenedioxythiophene) for the Ultrasensitive Electrochemical Detection of Urinary Progesterone. ChemistrySelect 2017. [DOI: 10.1002/slct.201701469] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Shyh-Chyang Luo
- Department of Materials Science and Engineering; National Taiwan University No. 1, Sec. 4; Roosevelt Road Taipei 10617 Taiwan
- Department of Materials Science and Engineering; National Cheng-Kung University; Tainan 701 Taiwan
| | - James L. Thomas
- Department of Physics and Astronomy; University of New Mexico; Albuquerque, NM 87131 USA
| | - Han-Zhang Guo
- Department of Chemical and Materials Engineering; National University of Kaohsiung, Kaohsiung 81148, Taiwan Department 700; Kaohsiung University Rd., Nan-Tzu District Kaohsiung 811 Taiwan) ectronic
| | - Wei-Tang Liao
- Department of Materials Science and Engineering; National Cheng-Kung University; Tainan 701 Taiwan
| | - Mei-Hwa Lee
- Department of Materials Science and Engineering; I-Shou University; Kaohsiung 840 Taiwan
| | - Hung-Yin Lin
- Department of Chemical and Materials Engineering; National University of Kaohsiung, Kaohsiung 81148, Taiwan Department 700; Kaohsiung University Rd., Nan-Tzu District Kaohsiung 811 Taiwan) ectronic
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15
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Lee MH, Thomas JL, Liao CL, Jurcevic S, Crnogorac-Jurcevic T, Lin HY. Polymers imprinted with three REG1B peptides for electrochemical determination of Regenerating Protein 1B, a urinary biomarker for pancreatic ductal adenocarcinoma. Mikrochim Acta 2017. [DOI: 10.1007/s00604-017-2169-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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16
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Koutilellis GD, Economou A, Efstathiou CE. A potentiostat featuring an integrator transimpedance amplifier for the measurement of very low currents--Proof-of-principle application in microfluidic separations and voltammetry. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2016; 87:034101. [PMID: 27036788 DOI: 10.1063/1.4942915] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
This work reports the design and construction of a novel potentiostat which features an integrator transimpedance amplifier as a current-monitoring unit. The integration approach addresses the limitations of the feedback resistor approach used for current monitoring in conventional potentiostat designs. In the present design, measurement of the current is performed by a precision switched integrator transimpedance amplifier operated in the dual sampling mode which enables sub-pA resolution. The potentiostat is suitable for measuring very low currents (typical dynamic range: 5 pA-4.7 μA) with a 16 bit resolution, and it can support 2-, 3- and 4-electrode cell configurations. Its operation was assessed by using it as a detection module in a home-made capillary electrophoresis system for the separation and amperometric detection of paracetamol and p-aminophenol at a 3-electrode microfluidic chip. The potential and limitations of the proposed potentiostat to implement fast potential-scan voltammetric techniques were demonstrated for the case of cyclic voltammetry.
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Affiliation(s)
- G D Koutilellis
- Laboratory of Analytical Chemistry, Department of Chemistry, University of Athens, Panepistimiopolis, Athens 157 71, Greece
| | - A Economou
- Laboratory of Analytical Chemistry, Department of Chemistry, University of Athens, Panepistimiopolis, Athens 157 71, Greece
| | - C E Efstathiou
- Laboratory of Analytical Chemistry, Department of Chemistry, University of Athens, Panepistimiopolis, Athens 157 71, Greece
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17
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Yang Z, Cai Q, Chen N, Zhou X, Hong J. Selective separation and identification of metabolite groups of Polygonum cuspidatum extract in rat plasma using dispersion solid-phase extraction by magnetic molecularly imprinted polymers coupled with LC/Q-TOF-MS. RSC Adv 2016. [DOI: 10.1039/c5ra26695e] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
In this work, magnetic molecularly imprinted polymers (MMIPs) were successfully prepared for specific recognition and selective enrichment of metabolite groups of Polygonum cuspidatum extract in rat plasma.
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Affiliation(s)
- Zaiyue Yang
- School of Pharmacy
- Nanjing Medical University
- Nanjing 210029
- PR China
| | - Qizhi Cai
- School of Pharmacy
- Nanjing Medical University
- Nanjing 210029
- PR China
| | - Ning Chen
- School of Pharmacy
- Nanjing Medical University
- Nanjing 210029
- PR China
- Jiangsu Province Institute of Materia Media
| | - Xuemin Zhou
- School of Pharmacy
- Nanjing Medical University
- Nanjing 210029
- PR China
| | - Junli Hong
- School of Pharmacy
- Nanjing Medical University
- Nanjing 210029
- PR China
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18
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Lee MH, O'Hare D, Guo HZ, Yang CH, Lin HY. Electrochemical sensing of urinary progesterone with molecularly imprinted poly(aniline-co-metanilic acid)s. J Mater Chem B 2016; 4:3782-3787. [DOI: 10.1039/c6tb00760k] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The sensing of urinary progesterone with molecularly imprinted poly(aniline-co-metanilic acid) coated electrodes.
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Affiliation(s)
- Mei-Hwa Lee
- Department of Materials Science and Engineering
- I-Shou University
- Kaohsiung 84001
- Taiwan
| | - Danny O'Hare
- Department of Bioengineering
- Imperial College
- London SW7 2BY
- UK
| | - Han-Zhang Guo
- Department of Chemical and Materials Engineering
- National University of Kaohsiung
- Kaohsiung 81148
- Taiwan
| | - Chien-Hsin Yang
- Department of Chemical and Materials Engineering
- National University of Kaohsiung
- Kaohsiung 81148
- Taiwan
| | - Hung-Yin Lin
- Department of Chemical and Materials Engineering
- National University of Kaohsiung
- Kaohsiung 81148
- Taiwan
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19
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Molecularly imprinted polymers as recognition materials for electronic tongues. Biosens Bioelectron 2015; 74:856-64. [PMID: 26233642 DOI: 10.1016/j.bios.2015.07.054] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Revised: 07/10/2015] [Accepted: 07/23/2015] [Indexed: 01/18/2023]
Abstract
For over three decades now, molecularly imprinted polymers (MIPs) have successfully been used for selective chemical sensing because the shape and size of their imprinted molecular cavities perfectly matched those of the target analyte molecules. Moreover, orientation of recognizing sites of these cavities corresponded to those of the binding sites of the template molecules. In contrast, electronic tongue (e-tongue) is usually an array of low-affinity recognition units. Its selectivity is based on recognition pattern or multivariate analysis. Merging these two sensing devices led to a synergetic hybrid sensor, an MIP based e-tongue. Fabrication of these e-tongues permitted simultaneous sensing and discriminating several analytes in complex solutions of many components so that these arrays compensated for limitation in cross-reactivity of MIPs. Apparently, analytical signals generated by MIP-based e-tongues, compared to those of ordinary sensor arrays, were more reliable where a unique pattern or 'fingerprint' for each analyte was generated. Additionally, several transduction platforms (from spectroscopic to electrochemical) engaged in constructing MIP-based e-tongues, found their broad and flexible applications. The present review critically evaluates achievements in recent developments of the MIP based e-tongues for chemosensing.
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20
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Lee MH, O'Hare D, Chen YL, Chang YC, Yang CH, Liu BD, Lin HY. Molecularly imprinted electrochemical sensing of urinary melatonin in a microfluidic system. BIOMICROFLUIDICS 2014; 8:054115. [PMID: 25584113 PMCID: PMC4290580 DOI: 10.1063/1.4898152] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2014] [Accepted: 09/29/2014] [Indexed: 05/22/2023]
Abstract
Melatonin levels may be related to the risks of breast cancer and prostate cancer. The measurement of urinary melatonin is also useful in monitoring serum melatonin levels following oral administration. In this work, melatonin is the target molecule, which is imprinted onto poly(ethylene-co-vinyl alcohol) by evaporation of the solvent on the working electrode of an electrochemical sensing chip. This sensing chip is used directly as a tool for optimizing the imprinting polymer composition, flow rate, and injection volume of the samples. Microfluidic sensing of the target and interference molecules revealed that the lowest detection limit is as low as ∼pM, and the electrochemical response is weak even at high interference concentrations. Poly(ethylene-co-vinyl alcohol), containing 44 mol. % ethylene, had an imprinting effectiveness of more than six-fold. In random urine analysis, the microfluidic amperometric measurements of melatonin levels with an additional and recovery of melatonin, the melatonin recovery achieved 94.78 ± 1.9% for melatonin at a concentration of 1.75-2.11 pg/mL.
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Affiliation(s)
- Mei-Hwa Lee
- Department of Materials Science and Engineering, I-Shou University , Kaohsiung 84001, Taiwan
| | - Danny O'Hare
- Department of Bioengineering, Imperial College , London SW7 2BY, United Kingdom
| | - Yi-Li Chen
- Department of Chemical and Materials Engineering, National University of Kaohsiung (NUK) , Kaohsiung 81148, Taiwan
| | - Yu-Chia Chang
- Department of Materials Science and Engineering, I-Shou University , Kaohsiung 84001, Taiwan
| | - Chien-Hsin Yang
- Department of Chemical and Materials Engineering, National University of Kaohsiung (NUK) , Kaohsiung 81148, Taiwan
| | - Bin-Da Liu
- Department of Electrical Engineering, National Cheng Kung University , Tainan 701, Taiwan
| | - Hung-Yin Lin
- Department of Chemical and Materials Engineering, National University of Kaohsiung (NUK) , Kaohsiung 81148, Taiwan
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