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Fan J, Gong H, Wang F, Wang L, Yu Y, Liu D, Yang W. Multiplexed electrochemical nucleic acid sensor based on visible light-mediated metal-free thiol-yne click reaction for simultaneous detection of different nucleic acid targets. Talanta 2024; 273:125856. [PMID: 38442565 DOI: 10.1016/j.talanta.2024.125856] [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: 10/13/2023] [Revised: 12/26/2023] [Accepted: 02/28/2024] [Indexed: 03/07/2024]
Abstract
Simultaneous detection of multiple tumor biomarkers with a simple and low-cost assay is crucial for early cancer detection and diagnosis. Herein, we presented a low-cost and simple assay for multiplexed detection of tumor biomarkers using a spatially separated electrodes strategy. The sensor is fabricated based on a metal-free thiol-yne click reaction, which is mediated by visible light, on commercially available indium tin oxide (ITO) electrodes. Four biomarkers, including p53 DNA, Brca2 DNA, K-ras DNA, and MicroRNA-204 RNA, were used as model analytes, and the corresponding oligonucleotide probes were modified on the desired electrode units sequentially with 530 nm irradiation light in the presence of photosensitizer Eosin Y. By this visible light-mediated coupling reaction, oligonucleotide probe densities of up to 9.2 ± 0.7 × 1010 molecules/cm2 were readily obtained on the ITO electrode surface. The proposed multiplexed E-NA sensor could detect four different nucleic acid targets concurrently without crosstalk among adjacent electrodes and was also successfully applied for detecting targets in a 20% fetal calf serum sample. The detection limits for p53 DNA, Brca2 DNA, K-ras DNA, and MicroRNA-204 RNA were 0.72 nM, 0.97 nM, 2.15 nM, and 1.73 nM, respectively. The developed approach not only has a great potential for developing cost-effective biosensors on affordable substrates for nucleic acid target detection, but also be easily extended to detect other targets by modifying the specific oligonucleotide probes anchored on the electrode.
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Affiliation(s)
- Jinlong Fan
- School of Material Science and Chemical Engineering, Harbin University of Science and Technology, Harbin 150040, China; MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China
| | - Hanlin Gong
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China
| | - Fan Wang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China
| | - Li Wang
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, College of Veterinary Medicine, Northeast Agricultural University, Harbin, Heilongjiang 150001, China
| | - Yongsheng Yu
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China
| | - Danqing Liu
- School of Material Science and Chemical Engineering, Harbin University of Science and Technology, Harbin 150040, China.
| | - Weiwei Yang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China.
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2
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Foguel MV, Zamora V, Ojeda J, Reed M, Bennett A, Calvo-Marzal P, Gerasimova YV, Kolpashchikov D, Chumbimuni-Torres KY. DNA nanotechnology for nucleic acid analysis: sensing of nucleic acids with DNA junction-probes. Analyst 2024; 149:968-974. [PMID: 38197474 DOI: 10.1039/d3an01707a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2024]
Abstract
DNA nanotechnology deals with the design of non-naturally occurring DNA nanostructures that can be used in biotechnology, medicine, and diagnostics. In this study, we introduced a nucleic acid five-way junction (5WJ) structure for direct electrochemical analysis of full-length biological RNAs. To the best of our knowledge, this is the first report on the interrogation of such long nucleic acid sequences by hybridization probes attached to a solid support. A hairpin-shaped electrode-bound oligonucleotide hybridizes with three adaptor strands, one of which is labeled with methylene blue (MB). The four strands are combined into a 5WJ structure only in the presence of specific DNA or RNA analytes. Upon interrogation of a full-size 16S rRNA in the total RNA sample, the electrode-bound MB-labeled 5WJ association produces a higher signal-to-noise ratio than electrochemical nucleic acid biosensors of alternative design. This advantage was attributed to the favorable geometry on the 5WJ nanostructure formed on the electrode's surface. The 5WJ biosensor is a cost-efficient alternative to the traditional electrochemical biosensors for the analysis of nucleic acids due to the universal nature of both the electrode-bound and MB-labeled DNA components.
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Affiliation(s)
- Marcos V Foguel
- Department of Chemistry. University of Central Florida, 4000 Central Florida Boulevard, Orlando, Fl 32816, USA.
| | - Victor Zamora
- Escuela Professional de Quimica, Facultad de Ciencias, Universidad Nacional Ingenieria, Av. Tupac 210, Lima, Peru
| | - Julio Ojeda
- Department of Chemistry. University of Central Florida, 4000 Central Florida Boulevard, Orlando, Fl 32816, USA.
| | - Mark Reed
- Department of Chemistry. University of Central Florida, 4000 Central Florida Boulevard, Orlando, Fl 32816, USA.
| | - Alexander Bennett
- Department of Chemistry. University of Central Florida, 4000 Central Florida Boulevard, Orlando, Fl 32816, USA.
| | - Percy Calvo-Marzal
- Department of Chemistry. University of Central Florida, 4000 Central Florida Boulevard, Orlando, Fl 32816, USA.
| | - Yulia V Gerasimova
- Department of Chemistry. University of Central Florida, 4000 Central Florida Boulevard, Orlando, Fl 32816, USA.
| | - Dmitry Kolpashchikov
- Department of Chemistry. University of Central Florida, 4000 Central Florida Boulevard, Orlando, Fl 32816, USA.
- Burnett School of Biomedical Science, university of Central Florida, 4000 Central Florida Boulevard, Orlando, Fl 32816, USA
| | - Karin Y Chumbimuni-Torres
- Department of Chemistry. University of Central Florida, 4000 Central Florida Boulevard, Orlando, Fl 32816, USA.
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3
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Mishra E, Schultz CM, Lai RY, Dowben PA. Coordination Chemistry of Uranyl Ions with Surface-Immobilized Peptides: An XPS Study. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27248960. [PMID: 36558092 PMCID: PMC9784848 DOI: 10.3390/molecules27248960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 12/08/2022] [Accepted: 12/14/2022] [Indexed: 12/23/2022]
Abstract
The coordination chemistry of uranyl ions with surface immobilized peptides was studied using X-ray photoemission spectroscopy (XPS). All the peptides in the study were modified using a six-carbon alkanethiol as a linker on a gold substrate with methylene blue as the redox label. The X-ray photoemission spectra reveal that each modified peptide interacts differently with the uranyl ion. For all the modified peptides, the XPS spectra were taken in both the absence and presence of the uranium, and their comparison reveals that the interaction depends on the chemical group present in the peptides. The XPS results show that, among all the modified peptides in the current study, the (arginine)9 (R9) modified peptide showed the largest response to uranium. In the order of response to uranium, the second largest response was shown by the modified (arginine)6 (R6) peptide followed by the modified (lysine)6 (K6) peptide. Other modified peptides, (alanine)6 (A6), (glutamic acid)6 (E6) and (serine)6 (S6), did not show any response to uranium.
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Affiliation(s)
- Esha Mishra
- Department of Physics and Astronomy, Theodore Jorgensen Hall, 855 North 16th Street, University of Nebraska-Lincoln, Lincoln, NE 68588-0299, USA
| | - Cody M. Schultz
- Department of Chemistry, Hamilton Hall, University of Nebraska-Lincoln, Lincoln, NE 68588-0304, USA
| | - Rebecca Y. Lai
- Department of Chemistry, Hamilton Hall, University of Nebraska-Lincoln, Lincoln, NE 68588-0304, USA
| | - Peter A. Dowben
- Department of Physics and Astronomy, Theodore Jorgensen Hall, 855 North 16th Street, University of Nebraska-Lincoln, Lincoln, NE 68588-0299, USA
- Correspondence:
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Thompson CC, Lai RY. Threonine Phosphorylation of an Electrochemical Peptide-Based Sensor to Achieve Improved Uranyl Ion Binding Affinity. BIOSENSORS 2022; 12:961. [PMID: 36354470 PMCID: PMC9688285 DOI: 10.3390/bios12110961] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 10/25/2022] [Accepted: 10/25/2022] [Indexed: 06/16/2023]
Abstract
We have successfully designed a uranyl ion (U(VI)-specific peptide and used it in the fabrication of an electrochemical sensor. The 12-amino acid peptide sequence, (n) DKDGDGYIpTAAE (c), originates from calmodulin, a Ca(II)-binding protein, and contains a phosphothreonine that enhances the sequence's affinity for U(VI) over Ca(II). The sensing mechanism of this U(VI) sensor is similar to other electrochemical peptide-based sensors, which relies on the change in the flexibility of the peptide probe upon interacting with the target. The sensor was systematically characterized using alternating current voltammetry (ACV) and cyclic voltammetry. Its limit of detection was 50 nM, which is lower than the United States Environmental Protection Agency maximum contaminant level for uranium. The signal saturation time was ~40 min. In addition, it showed minimal cross-reactivity when tested against nine different metal ions, including Ca(II), Mg(II), Pb(II), Hg(II), Cu(II), Fe(II), Zn(II), Cd(II), and Cr(VI). Its reusability and ability to function in diluted aquifer and drinking water samples were further confirmed and validated. The response of the sensor fabricated with the same peptide sequence but with a nonphosphorylated threonine was also analyzed, substantiating the positive effects of threonine phosphorylation on U(VI) binding. This study places emphasis on strategic utilization of non-standard amino acids in the design of metal ion-chelating peptides, which will further diversify the types of peptide recognition elements available for metal ion sensing applications.
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5
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Pellitero MA, Curtis SD, Arroyo-Currás N. Interrogation of Electrochemical Aptamer-Based Sensors via Peak-to-Peak Separation in Cyclic Voltammetry Improves the Temporal Stability and Batch-to-Batch Variability in Biological Fluids. ACS Sens 2021; 6:1199-1207. [PMID: 33599479 DOI: 10.1021/acssensors.0c02455] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Electrochemical, aptamer-based (E-AB) sensors support continuous, real-time measurements of specific molecular targets in complex fluids such as undiluted serum. They achieve these measurements by using redox-reporter-modified, electrode-attached aptamers that undergo target binding-induced conformational changes which, in turn, change electron transfer between the reporter and the sensor surface. Traditionally, E-AB sensors are interrogated via pulse voltammetry to monitor binding-induced changes in transfer kinetics. While these pulse techniques are sensitive to changes in electron transfer, they also respond to progressive changes in the sensor surface driven by biofouling or monolayer desorption and, consequently, present a significant drift. Moreover, we have empirically observed that differential voltage pulsing can accelerate monolayer desorption from the sensor surface, presumably via field-induced actuation of aptamers. Here, in contrast, we demonstrate the potential advantages of employing cyclic voltammetry to measure electron-transfer changes directly. In our approach, the target concentration is reported via changes in the peak-to-peak separation, ΔEP, of cyclic voltammograms. Because the magnitude of ΔEP is insensitive to variations in the number of aptamer probes on the electrode, ΔEP-interrogated E-AB sensors are resistant to drift and show decreased batch-to-batch and day-to-day variability in sensor performance. Moreover, ΔEP-based measurements can also be performed in a few hundred milliseconds and are, thus, competitive with other subsecond interrogation strategies such as chronoamperometry but with the added benefit of retaining sensor capacitance information that can report on monolayer stability over time.
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Affiliation(s)
- Miguel Aller Pellitero
- Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland 21202, United States
| | - Samuel D. Curtis
- Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland 21202, United States
| | - Netzahualcóyotl Arroyo-Currás
- Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland 21202, United States
- Department of Chemical and Biomolecular Engineering, Whiting School of Engineering, Johns Hopkins University, Baltimore, Maryland 21218, United States
- Institute for Nanobiotechnology, Johns Hopkins University, Baltimore, Maryland 21218, United States
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6
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Abu Nayem SM, Shaheen Shah S, Sultana N, Aziz MA, Saleh Ahammad AJ. Electrochemical Sensing Platforms of Dihydroxybenzene: Part 1 – Carbon Nanotubes, Graphene, and their Derivatives. CHEM REC 2021; 21:1039-1072. [DOI: 10.1002/tcr.202100043] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 03/07/2021] [Indexed: 12/12/2022]
Affiliation(s)
- S. M. Abu Nayem
- Department of Chemistry Jagannath University Dhaka 1100 Bangladesh 9583794
| | - Syed Shaheen Shah
- Center of Research Excellence in Nanotechnology King Fahd University of Petroleum & Minerals, KFUPM Box 5040 Dhahran 31261 Saudi Arabia
- Physics Department King Fahd University of Petroleum & Minerals, KFUPM Box 5047 Dhahran 31261 Saudi Arabia
| | - Nasrin Sultana
- Department of Chemistry Jagannath University Dhaka 1100 Bangladesh 9583794
| | - Md. Abdul Aziz
- Center of Research Excellence in Nanotechnology King Fahd University of Petroleum & Minerals, KFUPM Box 5040 Dhahran 31261 Saudi Arabia
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8
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Koç Y, Moralı U, Erol S, Avci H. Electrochemical Investigation of Gold Based Screen Printed Electrodes: An Application for a Seafood Toxin Detection. ELECTROANAL 2020. [DOI: 10.1002/elan.202060433] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Yücel Koç
- Department of Chemical Engineering Eskisehir Osmangazi University Eskisehir Turkey
- AvciBio Research Group Eskisehir Osmangazi University Eskisehir Turkey
| | - Uğur Moralı
- Department of Chemical Engineering Eskisehir Osmangazi University Eskisehir Turkey
| | - Salim Erol
- Department of Chemical Engineering Eskisehir Osmangazi University Eskisehir Turkey
- College of Engineering and Technology American University of the Middle East Kuwait
| | - Huseyin Avci
- Department of Metallurgical and Materials Engineering Eskisehir Osmangazi University Eskisehir Turkey
- Cellular Therapy and Stem Cell Research Center (ESTEM) Eskisehir Osmangazi University Eskisehir Turkey
- AvciBio Research Group Eskisehir Osmangazi University Eskisehir Turkey
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9
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Yu Z, Han X, Li F, Tan X, Shi W, Fu C, Yan H, Zhang G. Lengthening the aptamer to hybridize with a stem-loop DNA assistant probe for the electrochemical detection of kanamycin with improved sensitivity. Anal Bioanal Chem 2020; 412:2391-2397. [PMID: 32076786 DOI: 10.1007/s00216-020-02481-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 01/28/2020] [Accepted: 01/31/2020] [Indexed: 11/25/2022]
Abstract
By adding 6 thymines to lengthen the parent aptamer combined with the change of "on" and "off" induced by the target for an assistant stem-loop DNA probe (ASP-SLP-MB), a new folding-type electrochemical kanamycin (Kana) aptamer-engineering dual-probe-based sensor (sensor d) was developed. By purposefully reducing the background current and increasing the electron transfer efficiency of methylene blue (MB), the sensor obtained significantly enhanced detection sensitivity compared with non-aptamer-engineering one-probe-based sensor (sensor a). Such efficacy was validated by a big decrease from 530.6 to 210.2 nA for the background current signal and from 360 to 0.3 nM for the detection limit. In addition to the improved sensitivity, the sensor also exhibited good selectivity, anti-fouling detection performance, and potential quantitative analysis ability, showing a feasible potential practical analytical application in real-life complicated samples, for example, milk and serum. The released results prove that the aptamer-engineering method is effective in improving the analytical performance of folding-type sensors and provides a methodological guidance for the design and fabrication of other high-performance folding-type aptasensors. Graphical abstract.
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Affiliation(s)
- Zhigang Yu
- Post-Doctoral Research Center of Chongqing Key Laboratory of Inorganic Special Functional Materials, College of Chemistry and Chemical Engineering, Yangtze Normal University, Fuling, Chongqing, 408100, China.
- School of Materials Science and Engineering, College of Chemical and Environmental Engineering, Harbin University of Science and Technology, Harbin, 150040, Heilongjiang, China.
| | - Xianda Han
- Post-Doctoral Research Center of Chongqing Key Laboratory of Inorganic Special Functional Materials, College of Chemistry and Chemical Engineering, Yangtze Normal University, Fuling, Chongqing, 408100, China
- School of Materials Science and Engineering, College of Chemical and Environmental Engineering, Harbin University of Science and Technology, Harbin, 150040, Heilongjiang, China
| | - Fengqin Li
- Post-Doctoral Research Center of Chongqing Key Laboratory of Inorganic Special Functional Materials, College of Chemistry and Chemical Engineering, Yangtze Normal University, Fuling, Chongqing, 408100, China
| | - Xiaoping Tan
- Post-Doctoral Research Center of Chongqing Key Laboratory of Inorganic Special Functional Materials, College of Chemistry and Chemical Engineering, Yangtze Normal University, Fuling, Chongqing, 408100, China
| | - Wenbing Shi
- Post-Doctoral Research Center of Chongqing Key Laboratory of Inorganic Special Functional Materials, College of Chemistry and Chemical Engineering, Yangtze Normal University, Fuling, Chongqing, 408100, China
| | - Cuicui Fu
- Post-Doctoral Research Center of Chongqing Key Laboratory of Inorganic Special Functional Materials, College of Chemistry and Chemical Engineering, Yangtze Normal University, Fuling, Chongqing, 408100, China
| | - Hong Yan
- School of Materials Science and Engineering, College of Chemical and Environmental Engineering, Harbin University of Science and Technology, Harbin, 150040, Heilongjiang, China
| | - Guiling Zhang
- School of Materials Science and Engineering, College of Chemical and Environmental Engineering, Harbin University of Science and Technology, Harbin, 150040, Heilongjiang, China.
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10
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Engineering uranyl-chelating peptides from NikR for electrochemical peptide-based sensing applications. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2019.113698] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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11
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Harandizadeh Z, Ito T. Block Copolymer‐Derived Recessed Nanodisk‐Array Electrodes as Platforms for Folding‐Based Electrochemical DNA Sensors. ChemElectroChem 2019. [DOI: 10.1002/celc.201901562] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Zeinab Harandizadeh
- Department of Chemistry Kansas State University 213 CBC Building, Manhattan Kansas 66506-0401 USA
| | - Takashi Ito
- Department of Chemistry Kansas State University 213 CBC Building, Manhattan Kansas 66506-0401 USA
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12
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Han X, Yu Z, Li F, Shi W, Fu C, Yan H, Zhang G. Two kanamycin electrochemical aptamer-based sensors using different signal transduction mechanisms: A comparison of electrochemical behavior and sensing performance. Bioelectrochemistry 2019; 129:270-277. [PMID: 31254804 DOI: 10.1016/j.bioelechem.2019.06.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 06/16/2019] [Accepted: 06/16/2019] [Indexed: 12/15/2022]
Abstract
Two typical kanamycin-A (KAN-A) electrochemical aptamer-based sensors employing different signal transduction mechanisms were deliberately designed and constructed with a similar structure. One sensor (sensor-1) was based on the classical probe conformation changing mode (PCCM) with a methylene blue (MB) label used as an electrochemical tag; the other sensor (sensor-2) used the target-induced signal probe shifting (TISPS) method with a free MB label in the assay solution. The difference in signal transduction mechanisms resulted in big differences in basic electrochemical behavior and comprehensive sensing performance. The results show that both sensor types exhibit different electrochemical behavior in square wave voltammetry, cyclic voltammetry, and in sensitivity, with detection limits of 3.0 nM for sensor-1 and 60.0 pM for sensor-2 in buffer. When validated for practical and quantitative detection of tap water and milk samples, both sensing methods performed well with detection limits of <260 nM and measurement times of <40 min. In addition, accuracy was good with mean recoveries of 72.3-92.6% and precision was acceptable with a relative standard deviation (RSD) of ≤14.2%. The basis for the similarities and differences in performance is also presented.
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Affiliation(s)
- Xianda Han
- School of Materials Science and Engineering, College of Chemical and Environmental Engineering, Harbin University of Science and Technology, Harbin 150040, China; Post-Doctoral Research Center, Chongqing Key Laboratory of Inorganic Special Functional Materials, College of Chemistry and Chemical Engineering, Yangtze Normal University, Fuling, Chongqing 408100, China
| | - Zhigang Yu
- School of Materials Science and Engineering, College of Chemical and Environmental Engineering, Harbin University of Science and Technology, Harbin 150040, China; Post-Doctoral Research Center, Chongqing Key Laboratory of Inorganic Special Functional Materials, College of Chemistry and Chemical Engineering, Yangtze Normal University, Fuling, Chongqing 408100, China.
| | - Fengqin Li
- Post-Doctoral Research Center, Chongqing Key Laboratory of Inorganic Special Functional Materials, College of Chemistry and Chemical Engineering, Yangtze Normal University, Fuling, Chongqing 408100, China
| | - Wenbing Shi
- Post-Doctoral Research Center, Chongqing Key Laboratory of Inorganic Special Functional Materials, College of Chemistry and Chemical Engineering, Yangtze Normal University, Fuling, Chongqing 408100, China
| | - Cuicui Fu
- Post-Doctoral Research Center, Chongqing Key Laboratory of Inorganic Special Functional Materials, College of Chemistry and Chemical Engineering, Yangtze Normal University, Fuling, Chongqing 408100, China
| | - Hong Yan
- School of Materials Science and Engineering, College of Chemical and Environmental Engineering, Harbin University of Science and Technology, Harbin 150040, China
| | - Guiling Zhang
- School of Materials Science and Engineering, College of Chemical and Environmental Engineering, Harbin University of Science and Technology, Harbin 150040, China.
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Lozano Untiveros K, da Silva EG, de Abreu FC, da Silva-Júnior EF, de Araújo-Junior JX, Mendoça de Aquino T, Armas SM, de Moura RO, Mendonça-Junior FJ, Serafim VL, Chumbimuni-Torres K. An electrochemical biosensor based on Hairpin-DNA modified gold electrode for detection of DNA damage by a hybrid cancer drug intercalation. Biosens Bioelectron 2019; 133:160-168. [DOI: 10.1016/j.bios.2019.02.071] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 02/14/2019] [Accepted: 02/28/2019] [Indexed: 12/16/2022]
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14
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Effects of redox label location on the performance of an electrochemical aptamer-based tumor necrosis factor-alpha sensor. Talanta 2018; 189:585-591. [PMID: 30086964 DOI: 10.1016/j.talanta.2018.07.055] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Revised: 07/16/2018] [Accepted: 07/17/2018] [Indexed: 11/21/2022]
Abstract
We report the development of an electrochemical aptamer-based sensor for real time detection of tumor necrosis factor-alpha. The focus of this study is to evaluate the effects of the redox label location on the overall sensor performance, including sensor stability, detection limit, reusability, and selectivity. Three aptamer probes, each labeled with methylene blue (MB) at a specific location, were designed and employed in the fabrication of the sensors. Among the three sensors, the sensor fabricated using an aptamer with the MB label located at the distal end has a detection limit of 100 pM and is regenerable. The sensor fabricated using an aptamer with an internal MB modification has a detection limit of 10 nM and is not regenerable. Both sensors can be employed in complex biological samples such as 50% urine and 50% saliva. However, the sensor fabricated with an aptamer with the MB label located at the proximal end suffers from poor reproducibility and is highly unstable, thus limiting its application as a sensor. On the bases of these results, placing the MB label at the distal end of the aptamer probe appears to be the most advantageous for this sensor design for it does not interfere with monolayer formation and target binding.
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15
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Lotfi Zadeh Zhad HR, Lai RY. Application of Calcium-Binding Motif of E-Cadherin for Electrochemical Detection of Pb(II). Anal Chem 2018; 90:6519-6525. [DOI: 10.1021/acs.analchem.7b05458] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Hamid R. Lotfi Zadeh Zhad
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, Nebraska 68588-0304, United States
| | - Rebecca Y. Lai
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, Nebraska 68588-0304, United States
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16
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Lotfi Zadeh Zhad HR, Lai RY. Hexavalent Chromium as an Electrocatalyst in DNA Sensing. Anal Chem 2017; 89:13342-13348. [DOI: 10.1021/acs.analchem.7b03514] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hamid R. Lotfi Zadeh Zhad
- Department of Chemistry, University of Nebraska—Lincoln, Lincoln, Nebraska 68588-0304, United States
| | - Rebecca Y. Lai
- Department of Chemistry, University of Nebraska—Lincoln, Lincoln, Nebraska 68588-0304, United States
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17
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Lotfi Zadeh Zhad HR, Rodríguez Torres YM, Lai RY. A reagentless and reusable electrochemical aptamer-based sensor for rapid detection of Cd(II). J Electroanal Chem (Lausanne) 2017. [DOI: 10.1016/j.jelechem.2017.09.022] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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18
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Lotfi Zadeh Zhad HR, Lai RY. Iron(III)-mediated Electrochemical Detection of Levofloxacin in Complex Biological Samples. ELECTROANAL 2017. [DOI: 10.1002/elan.201700428] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Rebecca Y. Lai
- Department of Chemistry; University of Nebraska-Lincoln; Lincoln NE 68588-0304
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Abstract
We report the first electrochemical cisplatin sensor fabricated with a thiolated and methylene blue (MB)-modified oligo-adenine (A)-guanine (G) DNA probe. Depending on the probe coverage, the sensor can behave as a signal-off or signal-on sensor. For the high-coverage sensor, formation of intrastrand Pt(II)-AG adducts rigidifies the oligo-AG probe, resulting in a concentration-dependent decrease in the MB signal. For the low-coverage sensor, the increase in probe-to-probe spacing enables binding of cisplatin via the intrastrand GNG motif (N = A), generating a bend in the probe which results in an increase in the MB current. Although both high-coverage signal-off and low-coverage signal-on sensors are capable of detecting cisplatin, the signal-on sensing mechanism is better suited for real time analysis of cisplatin. The low-coverage sensor has a lower limit of detection, wider optimal AC frequency range, and faster response time. It has high specificity for cisplatin and potentially other Pt(II) drugs and does not cross-react with satraplatin, a Pt(IV) prodrug. It is also selective enough to be employed directly in 50% saliva and 50% urine. This detection strategy may offer a new approach for sensitive and real time analysis of cisplatin in clinical samples.
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Affiliation(s)
- Yao Wu
- Department of Chemistry, University of Nebraska-Lincoln , Lincoln, Nebraska 68588-0304, United States
| | - Rebecca Y Lai
- Department of Chemistry, University of Nebraska-Lincoln , Lincoln, Nebraska 68588-0304, United States
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A reagentless and reusable electrochemical aptamer-based sensor for rapid detection of ampicillin in complex samples. Talanta 2017; 176:619-624. [PMID: 28917799 DOI: 10.1016/j.talanta.2017.08.057] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Revised: 08/17/2017] [Accepted: 08/17/2017] [Indexed: 11/23/2022]
Abstract
We report the design and fabrication of a "signal-on" electrochemical aptamer-based (E-AB) sensor for detection of ampicillin. The signaling of the sensor is based on target binding-induced changes in the conformation and flexibility of the methylene blue-modified aptamer probe. The sensor's response is fast; signal saturation can be reached in ~ 200s. Since all the sensor components are surface-immobilized, it is regenerable and can be reused for at least three times. It has demonstrated good specificity and is capable of differentiating between ampicillin and structurally similar antibiotics such as amoxicillin. More importantly, it is selective enough to be employed directly in complex samples, including serum, saliva, and milk. Although both alternating current voltammetry (ACV) and square wave voltammetry (SWV) are suitable sensor characterization techniques, our results show that ACV is better suited for target analysis. Even under the optimal experimental conditions, the limit of detection of the sensor obtained in ACV (1µM) is significantly lower than that obtained in SWV (30µM).
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21
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Wu Y, Baker SL, Lai RY. Effects of DNA Probe Length on the Performance of a Dynamics-based Electrochemical Hg(II) Sensor. ELECTROANAL 2017. [DOI: 10.1002/elan.201700314] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yao Wu
- Department of Chemistry; University of Nebraska-Lincoln; Lincoln NE 68588-0304
| | - Savannah L. Baker
- Department of Chemistry; University of Nebraska-Lincoln; Lincoln NE 68588-0304
| | - Rebecca Y. Lai
- Department of Chemistry; University of Nebraska-Lincoln; Lincoln NE 68588-0304
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22
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Effect of structure on sensing performance of a target induced signaling probe shifting DNA-based (TISPS-DNA) sensor. Biosens Bioelectron 2017; 91:817-823. [DOI: 10.1016/j.bios.2017.01.054] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Revised: 01/13/2017] [Accepted: 01/23/2017] [Indexed: 11/23/2022]
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Abstract
A number of electrochemical DNA sensors based on the target-induced change in the conformation and/or flexibility of surface-bound oligonucleotides have been developed in recent years. These sensors, which are often termed E-DNA sensors, are comprised of an oligonucleotide probe modified with a redox label (e.g., methylene blue) at one terminus and attached to a gold electrode via a thiol-gold bond at the other. Binding of the target to the DNA probe changes its structure and dynamics, which, in turn, influences the efficiency of electron transfer to the interrogating electrode. Since electrochemically active contaminants are less common, these sensors are resistant to false-positive signals arising from the nonspecific adsorption of contaminants and perform well even when employed directly in serum, whole blood, and other realistically complex sample matrices. Moreover, because all of the sensor components are chemisorbed to the electrode, the E-DNA sensors are essentially label-free and readily reusable. To date, these sensors have achieved state-of-the-art sensitivity, while offering the unprecedented selectivity, reusability, and the operational convenience of direct electrochemical detection. This chapter reviews the recent advances in the development of both "signal-off" and "signal-on" E-DNA sensors. Critical aspects that dictate the stability and performance of these sensors are also addressed so as to provide a realistic overview of this oligonucleotide detection platform.
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Affiliation(s)
- Rebecca Y Lai
- University of Nebraska-Lincoln, Lincoln, NE, United States.
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24
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Kékedy-Nagy L, Shipovskov S, Ferapontova EE. Effect of a Dual Charge on the DNA-Conjugated Redox Probe on DNA Sensing by Short Hairpin Beacons Tethered to Gold Electrodes. Anal Chem 2016; 88:7984-90. [DOI: 10.1021/acs.analchem.6b01020] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- László Kékedy-Nagy
- Interdisciplinary
Nanoscience Center, and ‡Center for DNA Nanotechnology at
iNANO, Science and Technology, Aarhus University, Gustav Wieds Vej 1590-14, DK-8000 Aarhus C, Denmark
| | - Stepan Shipovskov
- Interdisciplinary
Nanoscience Center, and ‡Center for DNA Nanotechnology at
iNANO, Science and Technology, Aarhus University, Gustav Wieds Vej 1590-14, DK-8000 Aarhus C, Denmark
| | - Elena E. Ferapontova
- Interdisciplinary
Nanoscience Center, and ‡Center for DNA Nanotechnology at
iNANO, Science and Technology, Aarhus University, Gustav Wieds Vej 1590-14, DK-8000 Aarhus C, Denmark
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25
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Labib M, Sargent EH, Kelley SO. Electrochemical Methods for the Analysis of Clinically Relevant Biomolecules. Chem Rev 2016; 116:9001-90. [DOI: 10.1021/acs.chemrev.6b00220] [Citation(s) in RCA: 555] [Impact Index Per Article: 69.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Mahmoud Labib
- Department
of Pharmaceutical Sciences, University of Toronto, Toronto, Ontario M5S 3M2, Canada
| | | | - Shana O. Kelley
- Department
of Pharmaceutical Sciences, University of Toronto, Toronto, Ontario M5S 3M2, Canada
- Institute
of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario M5S 3G4, Canada
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26
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Wu Y, Lai RY. Electrochemical Gold(III) Sensor with High Sensitivity and Tunable Dynamic Range. Anal Chem 2016; 88:2227-33. [DOI: 10.1021/acs.analchem.5b03868] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Yao Wu
- University of Nebraska—Lincoln, 651 Hamilton
Hall, Lincoln, Nebraska 68588-0304, United States
| | - Rebecca Y. Lai
- University of Nebraska—Lincoln, 651 Hamilton
Hall, Lincoln, Nebraska 68588-0304, United States
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27
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De Crozals G, Farre C, Sigaud M, Fortgang P, Sanglar C, Chaix C. Methylene blue phosphoramidite for DNA labelling. Chem Commun (Camb) 2015; 51:4458-61. [PMID: 25679473 DOI: 10.1039/c4cc10164b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the first synthesis of a methylene blue (MB) phosphoramidite derivative suitable for DNA solid-phase synthesis. The electrochemical and optical properties of the resulting MB modified oligonucleotides were confirmed. This new molecule is an important breakthrough in the design of new probes labelled with MB.
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Affiliation(s)
- Gabriel De Crozals
- Institut des sciences analytiques, CNRS/Université de Lyon. 5, rue de la Doua, 69100 Villeurbanne, France.
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Abstract
We report the design and fabrication of a reagentless and reusable electrochemical sensor for detection of satraplatin (SAT), a platinum(IV) prodrug. The detection strategy is based on the electrocatalytic reaction between the Pt(IV) center of SAT and surface-immobilized methylene blue. We systematically evaluated the effect of passivating diluent chain length on the overall sensor performance. Our results show that the use of a shorter diluent like 2-mercaptoethanol is more advantageous than using a longer and more passivating diluent such as 6-mercapto-1-hexanol. Independent of the use of cyclic voltammetry or chronoamperometry as the sensor interrogation technique, all three sensors, each passivated with a different alkanethiol diluent, have been demonstrated to be sensitive; the limit of detection is in the range of 1-10 μM. They are also highly specific and do not respond to Pt(II) drugs such as cisplatin and carboplatin. More importantly, they are selective enough to be employed directly in 50% serum. This sensing strategy has potential applications in clinical pharmacokinetics studies.
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Affiliation(s)
- Yao Wu
- 651 Hamilton Hall, University of Nebraska-Lincoln , Lincoln, Nebraska 68588-0304, United States
| | - Rebecca Y Lai
- 651 Hamilton Hall, University of Nebraska-Lincoln , Lincoln, Nebraska 68588-0304, United States
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29
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Electrochemical Interrogation of G3-Poly(propylene thiophenoimine) Dendritic Star Polymer in Phenanthrene Sensing. SENSORS 2015; 15:22343-63. [PMID: 26404296 PMCID: PMC4610539 DOI: 10.3390/s150922343] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/07/2015] [Revised: 08/23/2015] [Accepted: 08/27/2015] [Indexed: 12/07/2022]
Abstract
A novel dendritic star-copolymer, generation 3 poly(propylene thiophenoimine) (G3PPT)-co-poly(3-hexylthiophene) (P3HT) star co-polymer on gold electrode (i.e., Au|G3PPT-co-P3HT) was used as a sensor system for the determination of phenanthrene (PHE). The G3PPT-co-P3HT star co-polymer was synthesized via in situ electrochemical co-polymerization of generation 3 poly (propylene thiophenoimine) and poly (3-hexylthiophene) on gold electrode. 1HNMR spectroscopy was used to determine the regioregularity of the polymer composites, whereas Fourier transform infrared spectroscopy and scanning electron microscopy were used to study their structural and morphological properties. Au|G3PPT-co-P3HT in the absence of PHE, exhibited reversible electrochemistry attributable to the oligo (thiophene) 'pendants' of the dendrimer. PHE produced an increase in the voltammetric signals (anodic currents) due to its oxidation on the dendritic material to produce catalytic current, thereby suggesting the suitability of the Au|G3PPT-co-P3HT electrode as a PHE sensor. The electrocatalysis of PHE was made possible by the rigid and planar oligo-P3HT species (formed upon the oxidation of the oligo (thiophene) pendants of the star-copolymer), which allowed the efficient capture (binding) and detection (electrocatalytic oxidation) of PHE molecules.
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30
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Zaitouna AJ, Maben AJ, Lai RY. Incorporation of extra amino acids in peptide recognition probe to improve specificity and selectivity of an electrochemical peptide-based sensor. Anal Chim Acta 2015; 886:157-64. [PMID: 26320648 DOI: 10.1016/j.aca.2015.05.037] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2015] [Revised: 05/17/2015] [Accepted: 05/18/2015] [Indexed: 10/23/2022]
Abstract
We investigated the effect of incorporating extra amino acids (AA) at the n-terminus of the thiolated and methylene blue-modified peptide probe on both specificity and selectivity of an electrochemical peptide-based (E-PB) HIV sensor. The addition of a flexible (SG)3 hexapeptide is, in particular, useful in improving sensor selectivity, whereas the addition of a highly hydrophilic (EK)3 hexapeptide has shown to be effective in enhancing sensor specificity. Overall, both E-PB sensors fabricated using peptide probes with the added AA (SG-EAA and EK-EAA) showed better specificity and selectivity, especially when compared to the sensor fabricated using a peptide probe without the extra AA (EAA). For example, the selectivity factor recorded in the 50% saliva was ∼2.5 for the EAA sensor, whereas the selectivity factor was 7.8 for both the SG-EAA and EK-EAA sensors. Other sensor properties such as the limit of detection and dynamic range were minimally affected by the addition of the six AA sequence. The limit of detection was 0.5 nM for the EAA sensor and 1 nM for both SG-EAA and EK-EAA sensors. The saturation target concentration was ∼200 nM for all three sensors. Unlike previously reported E-PB HIV sensors, the peptide probe functions as both the recognition element and antifouling passivating agent; this modification eliminates the need to include an additional antifouling diluent, which simplifies the sensor design and fabrication protocol.
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Affiliation(s)
- Anita J Zaitouna
- University of Nebraska-Lincoln, 651 Hamilton Hall, Lincoln, NE 68588-0304, USA
| | - Alex J Maben
- University of Nebraska-Lincoln, 651 Hamilton Hall, Lincoln, NE 68588-0304, USA
| | - Rebecca Y Lai
- University of Nebraska-Lincoln, 651 Hamilton Hall, Lincoln, NE 68588-0304, USA.
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31
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Zaitouna AJ, Joyce J, Cerny RL, Dussault PH, Lai RY. Comparison of Mannose, Ethylene Glycol, and Methoxy-Terminated Diluents on Specificity and Selectivity of Electrochemical Peptide-Based Sensors. Anal Chem 2015; 87:6966-73. [PMID: 26057465 DOI: 10.1021/acs.analchem.5b01759] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We report the synthesis and application of three new antifouling diluents for the fabrication of an E-PB HIV sensor. Among the three thiolated antifouling diluents used in this study, the methoxy-terminated diluent (C6-MEG) is the most effective in alleviating both nonspecific binding and adsorption of matrix contaminants onto the sensor surface, especially when compared to the mannose- (C6-MAN) and ethylene-glycol-terminated (C6-EG) diluents. The sensor fabricated with C6-MEG has a specificity factor (∼13.5) substantially higher than the sensor passivated with only 6-mercapto-1-hexanol (∼1.5). It is functional even when employed directly in 25% serum, an achievement that has not been observed with this class of E-PB sensors. More importantly, incorporation of these antifouling diluents has negligible impact on other important sensor properties such as sensitivity and binding kinetics. This sensor passivation strategy is versatile and can potentially be used with other E-PB sensors, as well as surface-based sensors that utilize thiol-gold self-assembled monolayer chemistry.
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Affiliation(s)
- Anita J Zaitouna
- †Department of Chemistry, University of Nebraska-Lincoln, Lincoln, Nebraska 68588-0304, United States
| | - Jesse Joyce
- †Department of Chemistry, University of Nebraska-Lincoln, Lincoln, Nebraska 68588-0304, United States
| | - Ronald L Cerny
- †Department of Chemistry, University of Nebraska-Lincoln, Lincoln, Nebraska 68588-0304, United States
| | - Patrick H Dussault
- †Department of Chemistry, University of Nebraska-Lincoln, Lincoln, Nebraska 68588-0304, United States
| | - Rebecca Y Lai
- †Department of Chemistry, University of Nebraska-Lincoln, Lincoln, Nebraska 68588-0304, United States
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32
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Korshoj LE, Zaitouna AJ, Lai RY. Methylene blue-mediated electrocatalytic detection of hexavalent chromium. Anal Chem 2015; 87:2560-4. [PMID: 25671382 DOI: 10.1021/acs.analchem.5b00197] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report, for the first time, the design and fabrication of an electrochemical ion (E-ION) sensor for highly specific detection of hexavalent chromium (Cr(VI)). Unlike previously developed electrochemical Cr(VI) sensors, the sensing mechanism relies on the previously unexplored electrocatalytic reaction between Cr(VI) and surface-immobilized methylene blue (MB). The sensor is sensitive, specific, and selective enough to be used in a synthetic aquifer sample. Like many sensors of this class, it is also reagentless, reusable, and compatible with gold-plated screen-printed carbon electrodes. Despite the difference in the sensing mechanism, this E-ION Cr(VI) sensor possesses attributes similar to other MB-based electrochemical sensors, sensors with potential for real world applications.
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Affiliation(s)
- Lee E Korshoj
- Department of Chemistry, University of Nebraska-Lincoln , Lincoln, Nebraska 68588-0304, United States
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33
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Salamifar SE, Lai RY. Application of electrochemical surface plasmon resonance spectroscopy for characterization of electrochemical DNA sensors. Colloids Surf B Biointerfaces 2014; 122:835-839. [DOI: 10.1016/j.colsurfb.2014.07.028] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2014] [Revised: 07/05/2014] [Accepted: 07/16/2014] [Indexed: 11/25/2022]
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34
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Zhuang J, He Y, Chen G, Tang D. Binding-induced internal-displacement of inverted aptamer beacon: Toward a novel electrochemical detection platform. Electrochem commun 2014. [DOI: 10.1016/j.elecom.2014.07.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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35
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Wu Y, Lai RY. Effects of DNA Probe and Target Flexibility on the Performance of a “Signal-on” Electrochemical DNA Sensor. Anal Chem 2014; 86:8888-95. [DOI: 10.1021/ac5027226] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yao Wu
- 651 Hamilton Hall, University of Nebraska—Lincoln, Lincoln, Nebraska 68588-0304, United States
| | - Rebecca Y. Lai
- 651 Hamilton Hall, University of Nebraska—Lincoln, Lincoln, Nebraska 68588-0304, United States
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36
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Sun X, Jia M, Ji J, Guan L, Zhang Y, Tang L, Li Z. Enzymatic amplification detection of peanut allergen Ara h1 using a stem-loop DNA biosensor modified with a chitosan-mutiwalled carbon nanotube nanocomposite and spongy gold film. Talanta 2014; 131:521-7. [PMID: 25281135 DOI: 10.1016/j.talanta.2014.07.078] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Revised: 07/24/2014] [Accepted: 07/26/2014] [Indexed: 11/30/2022]
Abstract
In this paper, a highly sensitive biosensor was constructed for peanut allergen Ara h1 detection. The biosensor was constructed by coating a glassy carbon electrode with a chitosan-mutiwalled carbon nanotube nanocomposite and then adding a spongy gold film via electro-deposition to increase the effective area. The probe switched from an "on" to an "off" state in the presence of target DNA, which detached biotin from the electrode surface. This also detached streptavidin-horseradish peroxidase (HRP-SA), which was bound to the electrode via specific interaction with biotin. The HRP-SA catalyzed chemical oxidation of hydroquinone by H2O2 to form benzoquinone, and when it was detached, electrochemical reduction of the signal of benzoquinone could be used to monitor DNA hybridization via chronoamperometry. Under optimum conditions, a wide dynamic detection range (3.91 × 10(-17)-1.25 × 10(-15) mol L(-1)) and a low detection limit (1.3 × 10(-17) mol L(-1)) were achieved for the complementary sequence. Furthermore, the DNA biosensor exhibited an excellent ability to discriminate between a complementary target and a one-base mismatch or non-complementary sequence. The sensor was successfully applied to Ara h1 analysis in peanuts.
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Affiliation(s)
- Xiulan Sun
- State Key Laboratory of Food Science and Technology, School of Food Science of Jiangnan University, Synergetic Innovation Center of Food Safety, Wuxi 214122, Jiangsu, China.
| | - Min Jia
- State Key Laboratory of Food Science and Technology, School of Food Science of Jiangnan University, Synergetic Innovation Center of Food Safety, Wuxi 214122, Jiangsu, China
| | - Jian Ji
- State Key Laboratory of Food Science and Technology, School of Food Science of Jiangnan University, Synergetic Innovation Center of Food Safety, Wuxi 214122, Jiangsu, China
| | - Lu Guan
- State Key Laboratory of Food Science and Technology, School of Food Science of Jiangnan University, Synergetic Innovation Center of Food Safety, Wuxi 214122, Jiangsu, China
| | - Yinzhi Zhang
- State Key Laboratory of Food Science and Technology, School of Food Science of Jiangnan University, Synergetic Innovation Center of Food Safety, Wuxi 214122, Jiangsu, China
| | - Lili Tang
- State Key Laboratory of Food Science and Technology, School of Food Science of Jiangnan University, Synergetic Innovation Center of Food Safety, Wuxi 214122, Jiangsu, China
| | - Zaijun Li
- School of Chemical and Material Engineering of Jiangnan University, Wuxi 214122, Jiangsu, China
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37
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Cunningham JC, Brenes NJ, Crooks RM. Paper Electrochemical Device for Detection of DNA and Thrombin by Target-Induced Conformational Switching. Anal Chem 2014; 86:6166-70. [DOI: 10.1021/ac501438y] [Citation(s) in RCA: 137] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Josephine C. Cunningham
- Department of Chemistry, The University of Texas at Austin, 105
E. 24th St., Stop A5300, Austin, Texas 78712-1224, United States
| | - Nicholas J. Brenes
- Department of Chemistry, The University of Texas at Austin, 105
E. 24th St., Stop A5300, Austin, Texas 78712-1224, United States
| | - Richard M. Crooks
- Department of Chemistry, The University of Texas at Austin, 105
E. 24th St., Stop A5300, Austin, Texas 78712-1224, United States
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38
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Yu ZG, Zaitouna AJ, Lai RY. Effect of redox label tether length and flexibility on sensor performance of displacement-based electrochemical DNA sensors. Anal Chim Acta 2014; 812:176-83. [DOI: 10.1016/j.aca.2013.12.040] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2013] [Revised: 12/19/2013] [Accepted: 12/28/2013] [Indexed: 10/25/2022]
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39
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Characterization of an electrochemical mercury sensor using alternating current, cyclic, square wave and differential pulse voltammetry. Anal Chim Acta 2014; 810:79-85. [DOI: 10.1016/j.aca.2013.12.005] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2013] [Revised: 11/26/2013] [Accepted: 12/02/2013] [Indexed: 11/22/2022]
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40
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Lotfi Zadeh Zhad HR, Lai RY. A Hg(ii)-mediated “signal-on” electrochemical glutathione sensor. Chem Commun (Camb) 2014; 50:8385-7. [DOI: 10.1039/c4cc03329a] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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41
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