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Potentiometric Biosensor Based on Artificial Antibodies for an Alzheimer Biomarker Detection. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12073625] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This paper presents a potentiometric biosensor for the detection of amyloid β-42 (Aβ-42) in point-of-care analysis. This approach is based on the molecular imprint polymer (MIP) technique, which uses covalently immobilised Aβ-42 to create specific detection cavities on the surface of single-walled carbon nanotubes (SWCNTs). The biosensor was prepared by binding Aβ-42 to the SWCNT surface and then imprinting it by adding acrylamide (monomer), N,N’-methylene-bis-acrylamide (crosslinker) and ammonium persulphate (initiator). The target peptide was removed from the polymer matrix by the proteolytic action of an enzyme (proteinase K). The presence of imprinting sites was confirmed by comparing a MIP-modified surface with a negative control (NIP) consisting of a similar material where the target molecule had been removed from the process. The ability of the sensing material to rebind Aβ-42 was demonstrated by incorporating the MIP material as an electroactive compound in a PVC/plasticiser mixture applied to a solid conductive support of graphite. All steps of the synthesis of the imprinted materials were followed by Raman spectroscopy and Fourier transform infrared spectroscopy (FTIR). The analytical performance was evaluated by potentiometric transduction, and the MIP material showed cationic slopes of 75 mV-decade−1 in buffer pH 8.0 and a detection limit of 0.72 μg/mL. Overall, potentiometric transduction confirmed that the sensor can discriminate Aβ-42 in the presence of other biomolecules in the same solution.
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Mobed A, Hasanzadeh M. Biosensing: The best alternative for conventional methods in detection of Alzheimer's disease biomarkers. Int J Biol Macromol 2020; 161:59-71. [PMID: 32504710 DOI: 10.1016/j.ijbiomac.2020.05.257] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 05/26/2020] [Accepted: 05/28/2020] [Indexed: 11/29/2022]
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Effect of human serum on the electrical detection of amyloid-β fibrils in biological environments using azo-dye immobilized field effect transistor (FET) biosensor. SENSING AND BIO-SENSING RESEARCH 2018. [DOI: 10.1016/j.sbsr.2018.01.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Wustoni S, Hideshima S, Kuroiwa S, Nakanishi T, Hashimoto M, Mori Y, Osaka T. Sensitive electrical detection of human prion proteins using field effect transistor biosensor with dual-ligand binding amplification. Biosens Bioelectron 2015; 67:256-62. [DOI: 10.1016/j.bios.2014.08.028] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Revised: 08/08/2014] [Accepted: 08/08/2014] [Indexed: 11/16/2022]
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Wustoni S, Hideshima S, Kuroiwa S, Nakanishi T, Mori Y, Osaka T. Label-free detection of Cu(ii) in a human serum sample by using a prion protein-immobilized FET sensor. Analyst 2015; 140:6485-8. [DOI: 10.1039/c5an01115a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report a simple and label-free detection of Cu2+utilizing prion proteins as the recognition molecules, which can provide highly sensitive and selective performance at the nanomolar level in a human serum sample.
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Affiliation(s)
- Shofarul Wustoni
- Graduate School of Advanced Science and Engineering
- Waseda University
- Tokyo 169-8555
- Japan
| | - Sho Hideshima
- Research Organization for Nano & Life Innovation
- Waseda University
- Tokyo 162-0041
- Japan
| | - Shigeki Kuroiwa
- Research Organization for Nano & Life Innovation
- Waseda University
- Tokyo 162-0041
- Japan
| | - Takuya Nakanishi
- Research Organization for Nano & Life Innovation
- Waseda University
- Tokyo 162-0041
- Japan
| | - Yasuro Mori
- Research Organization for Nano & Life Innovation
- Waseda University
- Tokyo 162-0041
- Japan
| | - Tetsuya Osaka
- Graduate School of Advanced Science and Engineering
- Waseda University
- Tokyo 169-8555
- Japan
- Research Organization for Nano & Life Innovation
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Cheng S, Hotani K, Hideshima S, Kuroiwa S, Nakanishi T, Hashimoto M, Mori Y, Osaka T. Field Effect Transistor Biosensor Using Antigen Binding Fragment for Detecting Tumor Marker in Human Serum. MATERIALS 2014; 7:2490-2500. [PMID: 28788579 PMCID: PMC5453370 DOI: 10.3390/ma7042490] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/03/2014] [Revised: 03/15/2014] [Accepted: 03/19/2014] [Indexed: 11/18/2022]
Abstract
Detection of tumor markers is important for cancer diagnosis. Field-effect transistors (FETs) are a promising method for the label-free detection of trace amounts of biomolecules. However, detection of electrically charged proteins using antibody-immobilized FETs is limited by ionic screening by the large probe molecules adsorbed to the transistor gate surface, reducing sensor responsiveness. Here, we investigated the effect of probe molecule size on the detection of a tumor marker, α-fetoprotein (AFP) using a FET biosensor. We demonstrated that the small receptor antigen binding fragment (Fab), immobilized on a sensing surface as small as 2–3 nm, offers a higher degree of sensitivity and a wider concentration range (100 pg/mL–1 μg/mL) for the FET detection of AFP in buffer solution, compared to the whole antibody. Therefore, the use of a small Fab probe molecule instead of a whole antibody is shown to be effective for improving the sensitivity of AFP detection in FET biosensors. Furthermore, we also demonstrated that a Fab-immobilized FET subjected to a blocking treatment, to avoid non-specific interactions, could sensitively and selectively detect AFP in human serum.
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Affiliation(s)
- Shanshan Cheng
- Graduate School of Advanced Science and Engineering, Waseda University, 3-4-1, Okubo, Shinjuku-ku, Tokyo 169-8555, Japan.
| | - Kaori Hotani
- Graduate School of Advanced Science and Engineering, Waseda University, 3-4-1, Okubo, Shinjuku-ku, Tokyo 169-8555, Japan.
| | - Sho Hideshima
- Institute for Nanoscience & Nanotechnology, Waseda University, 513 Wasedatsurumaki-cho, Shinjuku-ku, Tokyo 162-0041, Japan.
| | - Shigeki Kuroiwa
- Institute for Nanoscience & Nanotechnology, Waseda University, 513 Wasedatsurumaki-cho, Shinjuku-ku, Tokyo 162-0041, Japan.
| | - Takuya Nakanishi
- Institute for Nanoscience & Nanotechnology, Waseda University, 513 Wasedatsurumaki-cho, Shinjuku-ku, Tokyo 162-0041, Japan.
| | - Masahiro Hashimoto
- Institute for Nanoscience & Nanotechnology, Waseda University, 513 Wasedatsurumaki-cho, Shinjuku-ku, Tokyo 162-0041, Japan.
| | - Yasuro Mori
- Institute for Nanoscience & Nanotechnology, Waseda University, 513 Wasedatsurumaki-cho, Shinjuku-ku, Tokyo 162-0041, Japan.
| | - Tetsuya Osaka
- Graduate School of Advanced Science and Engineering, Waseda University, 3-4-1, Okubo, Shinjuku-ku, Tokyo 169-8555, Japan.
- Institute for Nanoscience & Nanotechnology, Waseda University, 513 Wasedatsurumaki-cho, Shinjuku-ku, Tokyo 162-0041, Japan.
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Hideshima S, Kobayashi M, Wada T, Kuroiwa S, Nakanishi T, Sawamura N, Asahi T, Osaka T. A label-free electrical assay of fibrous amyloid β based on semiconductor biosensing. Chem Commun (Camb) 2014; 50:3476-9. [DOI: 10.1039/c3cc49460h] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Simple electrical assay discriminates between fibrous and non-fibrous amyloid β (Aβ) proteins, and determines the fibrous Aβ concentration with high sensitivity.
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Affiliation(s)
- Sho Hideshima
- Institute for Nanoscience & Nanotechnology
- Waseda University
- Tokyo 162-0041, Japan
| | - Masumi Kobayashi
- Department of Nanoscience and Nanoengineering
- Waseda University
- Tokyo 169-8555, Japan
| | - Takeyoshi Wada
- Department of Life Science & Medical Bioscience
- Waseda University
- TWIns
- Tokyo 162-8480, Japan
| | - Shigeki Kuroiwa
- Institute for Nanoscience & Nanotechnology
- Waseda University
- Tokyo 162-0041, Japan
| | - Takuya Nakanishi
- Institute for Nanoscience & Nanotechnology
- Waseda University
- Tokyo 162-0041, Japan
| | - Naoya Sawamura
- Department of Life Science & Medical Bioscience
- Waseda University
- TWIns
- Tokyo 162-8480, Japan
| | - Toru Asahi
- Institute for Nanoscience & Nanotechnology
- Waseda University
- Tokyo 162-0041, Japan
- Department of Life Science & Medical Bioscience
- Waseda University
| | - Tetsuya Osaka
- Institute for Nanoscience & Nanotechnology
- Waseda University
- Tokyo 162-0041, Japan
- Department of Nanoscience and Nanoengineering
- Waseda University
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