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Augustín M, Pfeifer R, Szabó O, Barek J, Vojs M, Kromka A, Vyskočil V. Novel, fast, and reliable electrochemical dsDNA biosensor based on O-terminated pristine nanocrystalline boron-doped diamond electrode for DNA interaction studies. Bioelectrochemistry 2024; 158:108691. [PMID: 38574451 DOI: 10.1016/j.bioelechem.2024.108691] [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: 11/03/2023] [Revised: 03/12/2024] [Accepted: 03/16/2024] [Indexed: 04/06/2024]
Abstract
We present a novel application of a nanocrystalline boron-doped diamond electrode (B-NCDE) for the construction of an electrochemical DNA biosensor based on double-stranded DNA (dsDNA) for various bioanalytical applications. Surface characterization of the transducer surface (prior and after the fabrication of negatively charged O-terminated surface - O-B-NCDE) was performed by scanning electron microscopy (SEM), Raman spectroscopy, and linear sweep voltammetry (LSV) that was further used for the voltammetric determination, scan rate dependence investigation, and repeatability examination of dsDNA electrochemical oxidation at the O-B-NCDE. The fabrication of a dsDNA/O-B-NCDE biosensor via electrostatic adsorption of dsDNA involved a thorough optimization process of deposition potential (Edep), deposition time (tdep), and optimal saturation concentration (cg(satur)) with optimal values of 0.3 V, 3 min, and 10 mg/mL. The bioanalytical applicability of the fabricated dsDNA/O-B-NCDE biosensor was verified by examining the nature of the interaction between dsDNA and five selected DNA intercalators - namely thioridazine hydrochloride (TR), trimipramine maleate (TRIM), levomepromazine maleate (LEV), imipramine hydrochloride (IMI), and prochlorperazine maleate (PER) - where intercalation was proven for all of the five tested compounds. Moreover, the proposed novel bioanalytical test offers the possibility to selectively distinguish between the phenothiazine representatives (TR, LEV, and PER) and representatives of tricyclic antidepressants group (TRIM and IMI).
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Affiliation(s)
- Michal Augustín
- Institute of Physics, Czech Academy of Sciences, Cukrovarnická 10/112, 162 00 Prague 6, Czech Republic; UNESCO Laboratory of Environmental Electrochemistry, Department of Analytical Chemistry, Faculty of Science, Charles University, Albertov 6, 128 43 Prague 2, Czech Republic
| | - Rene Pfeifer
- Institute of Physics, Czech Academy of Sciences, Cukrovarnická 10/112, 162 00 Prague 6, Czech Republic
| | - Ondrej Szabó
- Institute of Physics, Czech Academy of Sciences, Cukrovarnická 10/112, 162 00 Prague 6, Czech Republic
| | - Jiří Barek
- UNESCO Laboratory of Environmental Electrochemistry, Department of Analytical Chemistry, Faculty of Science, Charles University, Albertov 6, 128 43 Prague 2, Czech Republic
| | - Marian Vojs
- Institute of Electronics and Photonics, Faculty of Electrical Engineering and Information Technology, Slovak University of Technology in Bratislava, Ilkovičova 3, 812 19 Bratislava, Slovakia
| | - Alexander Kromka
- Institute of Physics, Czech Academy of Sciences, Cukrovarnická 10/112, 162 00 Prague 6, Czech Republic
| | - Vlastimil Vyskočil
- UNESCO Laboratory of Environmental Electrochemistry, Department of Analytical Chemistry, Faculty of Science, Charles University, Albertov 6, 128 43 Prague 2, Czech Republic.
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Zheng L, Zhang C, Ma J, Hong S, She Y, Abd EI-Aty A, Yahui He, Yu H, Liu H, Wang J. Fabrication of a highly sensitive electrochemical sensor based on electropolymerized molecularly imprinted polymer hybrid nanocomposites for the determination of 4-nonylphenol in packaged milk samples. Anal Biochem 2018; 559:44-50. [DOI: 10.1016/j.ab.2018.08.017] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2018] [Revised: 08/18/2018] [Accepted: 08/20/2018] [Indexed: 11/26/2022]
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Uguz C, Varisli O, Agca C, Evans T, Agca Y. In vitro effects of nonylphenol on motility, mitochondrial, acrosomal and chromatin integrity of ram and boar spermatozoa. Andrologia 2014; 47:910-9. [PMID: 25280247 DOI: 10.1111/and.12346] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/05/2014] [Indexed: 12/16/2022] Open
Abstract
The objective of this study was to determine the effects of nonylphenol (NP) on viability of ram and boar sperm in vitro. Ram or boar spermatozoa were exposed to 1, 10, 100, 250 and 500 μg NP ml(-1) for 1, 2, 3 or 4 h. Computer-assisted sperm motility analysis (CASA) system was used to evaluate sperm motility characteristics. Flow cytometry was used to determine mitochondrial membrane potential (MMP) and chromatin integrity, while epifluorescent microscopy was used to determine sperm acrosomal status. Exposure of both species spermatozoa to 250 and 500 μg NP ml(-1) was detrimental to progressive motility (P < 0.05), and its adverse effect was significant at lower (100 μg NP ml(-1) ) concentration (P < 0.05). The percentages of ram and boar spermatozoa with high MMP declined drastically after exposures to ≥250 μg ml(-1) NP (P < 0.05). Unlike chromatin integrity, which did not appear to be altered by NP exposure, there were dose-dependent NP effects (P < 0.05) on acrosomal integrity of both species at as low as 1 μg ml(-1) NP for boar spermatozoa and 10 μg ml(-1) NP for ram spermatozoa. These data show adverse effects of NP on ram and boar spermatozoa and thus its potential harmful effects on male reproduction as NP is found in fruits, vegetables, human milk, fish and livestock products.
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Affiliation(s)
- C Uguz
- Department of Veterinary Pathobiology, College of Veterinary Medicine, University of Missouri, Columbia, MO, USA
| | - O Varisli
- Department of Veterinary Pathobiology, College of Veterinary Medicine, University of Missouri, Columbia, MO, USA
| | - C Agca
- Department of Veterinary Pathobiology, College of Veterinary Medicine, University of Missouri, Columbia, MO, USA
| | - T Evans
- Department of Veterinary Pathobiology, College of Veterinary Medicine, University of Missouri, Columbia, MO, USA
| | - Y Agca
- Department of Veterinary Pathobiology, College of Veterinary Medicine, University of Missouri, Columbia, MO, USA
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Genotoxic effects of environmental endocrine disruptors on the aquatic insect Chironomus riparius evaluated using the comet assay. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2013; 758:41-7. [DOI: 10.1016/j.mrgentox.2013.09.005] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2013] [Revised: 09/09/2013] [Accepted: 09/12/2013] [Indexed: 11/20/2022]
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Electrochemical Determination of 4-Nonylphenol on Graphene-Chitosan Modified Glassy Carbon Electrode. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2013. [DOI: 10.1016/s1872-2040(13)60649-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Wang Y, Hu H, Zhao M, Zhao J, Yin D, Sun X, Liu S, Gao Q, Yu L, Hao L. Nonylphenol disrupts the cardio-protective effects of 17β-estradiol on ischemia/reperfusion injury in isolated hearts of guinea pig. J Toxicol Sci 2013; 38:731-40. [DOI: 10.2131/jts.38.731] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Affiliation(s)
- Yan Wang
- Department of Pharmaceutical Toxicology, School of Pharmaceutical Sciences, China Medical University, China
- Department of Pharmacy, Beihai People’s Hospital, China
| | - Huiyuan Hu
- Department of Pharmaceutical Toxicology, School of Pharmaceutical Sciences, China Medical University, China
| | - Meimi Zhao
- Department of Pharmaceutical Toxicology, School of Pharmaceutical Sciences, China Medical University, China
| | - Jinsheng Zhao
- Department of Pharmaceutical Toxicology, School of Pharmaceutical Sciences, China Medical University, China
| | - Dandan Yin
- Department of Pharmaceutical Toxicology, School of Pharmaceutical Sciences, China Medical University, China
| | - Xuefei Sun
- Department of Pharmaceutical Toxicology, School of Pharmaceutical Sciences, China Medical University, China
| | - Shuyuan Liu
- Department of Pharmaceutical Toxicology, School of Pharmaceutical Sciences, China Medical University, China
| | - Qinghua Gao
- Department of Pharmaceutical Toxicology, School of Pharmaceutical Sciences, China Medical University, China
- Department of Physiology, School of Basic Medical Sciences, China Medical University, China
| | - Lifeng Yu
- Department of Pharmaceutical Toxicology, School of Pharmaceutical Sciences, China Medical University, China
| | - Liying Hao
- Department of Pharmaceutical Toxicology, School of Pharmaceutical Sciences, China Medical University, China
- Cardiovascular Institute of China Medical University, China
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Rohrbach F, Karadeniz H, Erdem A, Famulok M, Mayer G. Label-free impedimetric aptasensor for lysozyme detection based on carbon nanotube-modified screen-printed electrodes. Anal Biochem 2011; 421:454-9. [PMID: 22200651 DOI: 10.1016/j.ab.2011.11.034] [Citation(s) in RCA: 103] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2011] [Revised: 11/26/2011] [Accepted: 11/28/2011] [Indexed: 11/27/2022]
Abstract
We report on the direct electrochemical detection of aptamer-protein interactions, namely between a DNA aptamer and lysozyme (LYS) based on electrochemical impedance spectroscopy (EIS) technique. First, the affinity of the aptamer to LYS and control proteins was presented by using filter retention assay. An amino-modified version of the DNA aptamer-recognizing lysozyme was covalently immobilized on the surface of multiwalled carbon nanotube-modified screen-printed electrodes (MWCNT-SPEs), which were employed for measurements and have improved properties compared with bare SPEs. This carbon nanotube setup enabled the reliable monitoring of the interaction of lysozyme with its cognate aptamer by EIS transduction of the resistance to charge transfer (R(ct)) in the presence of 2.5 mM [Fe(CN)₆]³⁻/⁴⁻. This assay system provides a means for the label-free, concentration-dependent, and selective detection of lysozyme with an observed detection limit of 12.09 μg/ml (equal to 862 nM).
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Affiliation(s)
- Falk Rohrbach
- LIMES Institute, Program Unit Chemical Biology and Medicinal Chemistry, University of Bonn, 53121 Bonn, Germany
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