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Tsai PC, Chen RLC, Hsieh BC, Cheng TJ. Nitrocellulose/acrylic resin coated screen-printed carbon electrode to construct a capacitive immunosensor for anti-BSA. Biosens Bioelectron 2024; 258:116376. [PMID: 38739999 DOI: 10.1016/j.bios.2024.116376] [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: 02/21/2024] [Revised: 05/01/2024] [Accepted: 05/08/2024] [Indexed: 05/16/2024]
Abstract
The capacitive immunosensor, known for its label-free simplicity, has great potential for point-of-care diagnostics. However, the interaction between insulation and recognition layers on the sensing electrode greatly affects its performance. This study introduces a pioneering dual-layer strategy, implementing a novel combination of acrylic resin (AR) and nitrocellulose (NC) coatings on screen-printed carbon electrodes (SPCEs). This innovative approach not only enhances the dielectric properties of the capacitive sensor but also streamlines the immobilization of recognizing elements. Particularly noteworthy is the superior reliability and insulation offered by the AR coating, surpassing the limitations of traditional self-assembled monolayer (SAM) modifications. This dual-layer methodology establishes a robust foundation for constructing capacitive sensors optimized specifically for liquid medium-based biosensing applications. The NC coating in this study represents a breakthrough in effectively immobilizing BSA, unraveling the capacitive response intricately linked to the quantity of adsorbed recognizing elements. The results underscore the prowess of the proposed immunosensor, showcasing a meticulously defined linear calibration curve for anti-BSA (ranging from 0 to 25 μg/ml). Additionally, specific interactions with anti-HAS and anti-TNF-α further validate the versatility and efficacy of the developed immunosensor. This work presents a streamlined and highly efficient protocol for developing label-free immunosensors for antibody determination and introduces a paradigm shift by utilizing readily available electrodes and sensing systems. The findings are poised to catalyze a significant acceleration in the advancement of biosensor technology, opening new avenues for innovative applications in point-of-care diagnostics.
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Affiliation(s)
- Pei-Chia Tsai
- Department of Biomechatronics Engineering, College of Bio-Resources and Agriculture, National Taiwan University, Taipei, Taiwan
| | - Richie L C Chen
- Department of Biomechatronics Engineering, College of Bio-Resources and Agriculture, National Taiwan University, Taipei, Taiwan
| | - Bo-Chuan Hsieh
- Department of Biomechatronics Engineering, College of Bio-Resources and Agriculture, National Taiwan University, Taipei, Taiwan
| | - Tzong-Jih Cheng
- Department of Biomechatronics Engineering, College of Bio-Resources and Agriculture, National Taiwan University, Taipei, Taiwan.
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Vorobjova A, Tishkevich D, Shimanovich D, Zdorovets M, Kozlovskiy A, Zubar T, Vinnik D, Dong M, Trukhanov S, Trukhanov A, Fedosyuk V. Electrochemical Behaviour of Ti/Al 2O 3/Ni Nanocomposite Material in Artificial Physiological Solution: Prospects for Biomedical Application. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E173. [PMID: 31963901 PMCID: PMC7022230 DOI: 10.3390/nano10010173] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 01/11/2020] [Accepted: 01/13/2020] [Indexed: 01/07/2023]
Abstract
Inorganic-based nanoelements such as nanoparticles (nanodots), nanopillars and nanowires, which have at least one dimension of 100 nm or less, have been extensively developed for biomedical applications. Furthermore, their properties can be varied by controlling such parameters as element shape, size, surface functionalization, and mutual interactions. In this study, Ni-alumina nanocomposite material was synthesized by the dc-Ni electrodeposition into a porous anodic alumina template (PAAT). The structural, morphological, and corrosion properties were studied using x-ray diffraction (XRD), scanning electron microscopy (SEM), atomic force microscopy (AFM), and electrochemical techniques (linear sweep voltammetry). Template technology was used to obtain Ni nanopillars (NiNPs) in the PAAT nanocomposite. Low corrosion current densities (order of 0.5 µA/cm2) were indicators of this nanocomposite adequate corrosion resistance in artificial physiological solution (0.9% NaCl). A porous anodic alumina template is barely exposed to corrosion and performs protective functions in the composite. The results may be useful for the development of new nanocomposite materials technologies for a variety of biomedical applications including catalysis and nanoelectrodes for sensing and fuel cells. They are also applicable for various therapeutic purposes including targeting, diagnosis, magnetic hyperthermia, and drug delivery. Therefore, it is an ambitious task to research the corrosion resistance of these magnetic nanostructures in simulated body fluid.
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Affiliation(s)
- Alla Vorobjova
- Department of Micro- and Nanoelectronics, Belarusian State University of Informatics and Radioelectronics, 220013 Minsk, Belarus; (A.V.); (D.S.)
| | - Daria Tishkevich
- Laboratory of Magnetic Films Physics, Scientific-Practical Materials Research Centre of National Academy of Sciences of Belarus, 220072 Minsk, Belarus; (T.Z.); (S.T.); (A.T.); (V.F.)
- Laboratory of Single Crystal Growth, South Ural State University, 454080 Chelyabinsk, Russia;
| | - Dmitriy Shimanovich
- Department of Micro- and Nanoelectronics, Belarusian State University of Informatics and Radioelectronics, 220013 Minsk, Belarus; (A.V.); (D.S.)
| | - Maxim Zdorovets
- The Institute of Nuclear Physics, Almaty 050032, Kazakhstan; (M.Z.); (A.K.)
- L.N. Gumilyov Eurasian National University, Nur-Sultan 010008, Kazakhstan
- Ural Federal University named after the First President of Russia B.N. Yeltsin, 620075 Yekaterinburg, Russia
| | - Artem Kozlovskiy
- The Institute of Nuclear Physics, Almaty 050032, Kazakhstan; (M.Z.); (A.K.)
| | - Tatiana Zubar
- Laboratory of Magnetic Films Physics, Scientific-Practical Materials Research Centre of National Academy of Sciences of Belarus, 220072 Minsk, Belarus; (T.Z.); (S.T.); (A.T.); (V.F.)
- Laboratory of Single Crystal Growth, South Ural State University, 454080 Chelyabinsk, Russia;
| | - Denis Vinnik
- Laboratory of Single Crystal Growth, South Ural State University, 454080 Chelyabinsk, Russia;
| | - Mengge Dong
- Department of Resource and Environment, Northeastern University, Shenyang 110819, China;
| | - Sergey Trukhanov
- Laboratory of Magnetic Films Physics, Scientific-Practical Materials Research Centre of National Academy of Sciences of Belarus, 220072 Minsk, Belarus; (T.Z.); (S.T.); (A.T.); (V.F.)
- Laboratory of Single Crystal Growth, South Ural State University, 454080 Chelyabinsk, Russia;
| | - Alex Trukhanov
- Laboratory of Magnetic Films Physics, Scientific-Practical Materials Research Centre of National Academy of Sciences of Belarus, 220072 Minsk, Belarus; (T.Z.); (S.T.); (A.T.); (V.F.)
- Laboratory of Single Crystal Growth, South Ural State University, 454080 Chelyabinsk, Russia;
| | - Valery Fedosyuk
- Laboratory of Magnetic Films Physics, Scientific-Practical Materials Research Centre of National Academy of Sciences of Belarus, 220072 Minsk, Belarus; (T.Z.); (S.T.); (A.T.); (V.F.)
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Chen HJ, Chen RLC, Hsieh BC, Hsiao HY, Kung Y, Hou YT, Cheng TJ. Label-free and reagentless capacitive aptasensor for thrombin. Biosens Bioelectron 2019; 131:53-59. [PMID: 30826650 DOI: 10.1016/j.bios.2019.02.025] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 01/10/2019] [Accepted: 02/06/2019] [Indexed: 12/14/2022]
Abstract
This investigation develops a label-free and reagentless aptasensor, based on a capacitive transducer with simple face-to-face electrode pairs. The electrode pairs of the transducer are composed of a gold electrode and an indium tin oxide film with micrometer separation with a double-side polyethylene terephthalate tape. Aptamers and 1-dodecanethiol are modified to form a self-assembled monolayer (SAM) on the gold electrode surfaces, and function as bio-recognition elements and preventers of non-specific protein binding, respectively. Electrochemical characterization results indicate that the SAM also forms an effective insulating layer, which is sufficient for capacitive sensing. The feasibility of the capacitive biosensor is validated using thrombin as a model analyte. The ultra-small value changes of capacitance originating from thrombin binding with the aptamers modified on the biosensor were measured with a home-made capacitance measuring circuit based on switched capacitor (SC) technology. The developed biosensor has detection limits of 1 pM and 10 pM of thrombin in phosphate buffered saline and mimic serum solution, respectively. The linear range for thrombin detection in human serum solution is from 10 pM to 1 μM, with a regression coefficient of 0.98. Additionally, the proposed aptasensor does not have significant levels of non-specific binding of bovine serum albumin and human serum albumin. Accordingly, the combination of SC and SAM bringing capacitive transduction at the forefront of ultrasensitive label-free and reagentless biosensing devices, particularly for point-of-care clinical analysis, which adopts small numbers of biological samples with low analyte concentrations.
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Affiliation(s)
- Hsin-Ju Chen
- Department of Bio-Industrial Mechatronics Engineering, College of Bio-Resources and Agriculture, National Taiwan University, Taipei, Taiwan
| | - Richie L C Chen
- Department of Bio-Industrial Mechatronics Engineering, College of Bio-Resources and Agriculture, National Taiwan University, Taipei, Taiwan
| | - Bo-Chuan Hsieh
- Department of Bio-Industrial Mechatronics Engineering, College of Bio-Resources and Agriculture, National Taiwan University, Taipei, Taiwan
| | - Hsien-Yi Hsiao
- Department of Bio-Industrial Mechatronics Engineering, College of Bio-Resources and Agriculture, National Taiwan University, Taipei, Taiwan
| | - Yi Kung
- Department of Bio-Industrial Mechatronics Engineering, College of Bio-Resources and Agriculture, National Taiwan University, Taipei, Taiwan
| | - Yung-Te Hou
- Department of Bio-Industrial Mechatronics Engineering, College of Bio-Resources and Agriculture, National Taiwan University, Taipei, Taiwan
| | - Tzong-Jih Cheng
- Department of Bio-Industrial Mechatronics Engineering, College of Bio-Resources and Agriculture, National Taiwan University, Taipei, Taiwan; Department of Biomedical Engineering, National Taiwan University Hospital, College of Medicine, National Taiwan University, Taipei, Taiwan.
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YAN XF, WANG MH, AN D. Progress of Interdigitated Array Microelectrodes Based Impedance Immunosensor. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2012. [DOI: 10.3724/sp.j.1096.2011.01601] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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YAN XF, WANG MH, AN D. Progress of Interdigitated Array Microelectrodes Based Impedance Immunosensor. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2011. [DOI: 10.1016/s1872-2040(10)60478-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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