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Feng X, Xu Q, Liu Y, Wang S, Cao Y, Zhao C, Peng S. Smartphone-enabled colorimetric immunoassay for deoxynivalenol based on Mn 2+-mediated aggregation of AuNPs. Anal Biochem 2024; 692:115572. [PMID: 38777290 DOI: 10.1016/j.ab.2024.115572] [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: 12/21/2023] [Revised: 04/27/2024] [Accepted: 05/17/2024] [Indexed: 05/25/2024]
Abstract
Deoxynivalenol (DON) is a common mycotoxin in food that mainly pollutes grain crops and feeds, such as barley, wheat and corn. DON has caused widespread concern in the field of food and feed safety. In this study, a colorimetric immunoassay was proposed based on the aggregation of gold nanoparticles (AuNPs) due to the decomposition of Mn2+ from gold-coated manganese dioxide (AuNP@MnO2) nanosheets. In this study, 2-(dihydrogen phosphate)-l-ascorbic acid (AAP) was hydrolyzed by alkaline phosphatase (ALP) and converted to ascorbic acid (AA). Then, AuNP@MnO2 was reduced to Mn2+ and AuNPs aggregation occurred. Using the unique optical characteristics of AuNPs and AuNP@MnO2, visible color changes realized simple detection of DON with high sensitivity and portability. With increasing DON content, the color changed more obviously. To quantitatively detect DON, pictures can be taken and the blue value can be read by a smartphone. The detection limit (Ic10) of this method was 0.098 ng mL-1, which was 326 times higher than that of traditional competitive ELISA, and the detection range was 0.177-6.073 ng mL-1. This method exhibited high specificity with no cross-reaction in other structural analogs. The average recovery rate of DON in corn flour samples was 89.1 %-110.2 %, demonstrating the high accuracy and stability of this assay in actual sample detection. Therefore, the colorimetric immunoassay can be used for DON-related food safety monitoring.
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Affiliation(s)
- Xinrui Feng
- College of Public Health, Jilin Medical University, Jilin, Jilin, China; Medical College, Yanbian University, Yanji, Jilin, China
| | - Qinwei Xu
- Department of Pulmonary and Critical Care Medicine, Qilu Hospital of Shandong University (Qingdao), Qingdao, Shandong, China
| | - Yan Liu
- College of Public Health, Jilin Medical University, Jilin, Jilin, China
| | - Sijia Wang
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, Jilin, China
| | - Yong Cao
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, Jilin, China
| | - Chen Zhao
- College of Public Health, Jilin Medical University, Jilin, Jilin, China; Medical College, Yanbian University, Yanji, Jilin, China.
| | - Shuai Peng
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, Jilin, China.
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2
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Rabiei P, Mohabatkar H, Behbahani M. A label-free G-quadruplex aptamer/gold nanoparticle-based colorimetric biosensor for rapid detection of bovine viral diarrhea virus genotype 1. PLoS One 2024; 19:e0293561. [PMID: 39078832 PMCID: PMC11288453 DOI: 10.1371/journal.pone.0293561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 10/16/2023] [Indexed: 08/02/2024] Open
Abstract
Bovine viral diarrhea virus (BVDV) is the cause of bovine viral diarrhea disease, one of the most economically important livestock diseases worldwide. The majority of BVD disease control programs rely on the detection and then elimination of persistent infection (PI) cattle, as the continuing source of disease. The main purpose of this study was to design and develop an accurate G-quadruplex-based aptasensor for rapid and simple detection of BVDV-1. In this work, we utilized in silico techniques to design a G-quadruplex aptamer specific for the detection of BVDV-1. Also, the rationally designed aptamer was validated experimentally and was used for developing a colorimetric biosensor based on an aptamer-gold nanoparticle system. Firstly, a pool of G-quadruplex forming ssDNA sequences was constructed. Then, based on the stability score in secondary and tertiary structures and molecular docking score, an aptamer (Apt31) was selected. In the experimental part, gold nanoparticles (AuNPs) with an average particle size of 31.7 nm were synthesized and electrostatically linked with the Apt31. The colorimetric test showed that salt-induced color change of AuNPs from red to purple-blue occurs only in the presence of BVDV-Apt31 complex, after 20 min. These results approved the specificity of Apt31 for BVDV. Furthermore, our biosensor could detect the virus at as low as 0.27 copies/ml, which is an acceptable value in comparison to the qPCR method. The specificity of the aptasensor was confirmed through cross-reactivity testing, while its selectivity was confirmed through plasma testing. The sample analysis showed 90% precision and 94% accuracy. It was concluded that the biosensor was adequately sensitive and specific for the detection of BVDV in plasma samples and could be used as a simple and rapid method on the farm.
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Affiliation(s)
- Parisa Rabiei
- Department of Biotechnology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran
| | - Hassan Mohabatkar
- Department of Biotechnology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran
| | - Mandana Behbahani
- Department of Biotechnology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran
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Ramalingam M, Jaisankar A, Cheng L, Krishnan S, Lan L, Hassan A, Sasmazel HT, Kaji H, Deigner HP, Pedraz JL, Kim HW, Shi Z, Marrazza G. Impact of nanotechnology on conventional and artificial intelligence-based biosensing strategies for the detection of viruses. DISCOVER NANO 2023; 18:58. [PMID: 37032711 PMCID: PMC10066940 DOI: 10.1186/s11671-023-03842-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Accepted: 03/28/2023] [Indexed: 04/05/2023]
Abstract
Recent years have witnessed the emergence of several viruses and other pathogens. Some of these infectious diseases have spread globally, resulting in pandemics. Although biosensors of various types have been utilized for virus detection, their limited sensitivity remains an issue. Therefore, the development of better diagnostic tools that facilitate the more efficient detection of viruses and other pathogens has become important. Nanotechnology has been recognized as a powerful tool for the detection of viruses, and it is expected to change the landscape of virus detection and analysis. Recently, nanomaterials have gained enormous attention for their value in improving biosensor performance owing to their high surface-to-volume ratio and quantum size effects. This article reviews the impact of nanotechnology on the design, development, and performance of sensors for the detection of viruses. Special attention has been paid to nanoscale materials, various types of nanobiosensors, the internet of medical things, and artificial intelligence-based viral diagnostic techniques.
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Affiliation(s)
- Murugan Ramalingam
- School of Basic Medical Sciences, Clinical Medical College & Affiliated Hospital, Chengdu University, Chengdu, 610106 China
- Institute of Tissue Regeneration Engineering, Dankook University, Cheonan, 31116 Republic of Korea
- Department of Nanobiomedical Science, Dankook University, Cheonan, 31116 Republic of Korea
- BK21 NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan, 31116 Republic of Korea
- Mechanobiology Dental Medicine Research Center, Dankook University, Cheonan, 31116 Republic of Korea
- UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University, Cheonan, 31116 South Korea
- Department of Metallurgical and Materials Engineering, Faculty of Engineering, Atilim University, 06836 Ankara, Turkey
| | - Abinaya Jaisankar
- Centre for Biomaterials, Cellular and Molecular Theranostics, School of Mechanical Engineering, Vellore Institute of Technology, Vellore, 632014 India
| | - Lijia Cheng
- School of Basic Medical Sciences, Clinical Medical College & Affiliated Hospital, Chengdu University, Chengdu, 610106 China
| | - Sasirekha Krishnan
- Centre for Biomaterials, Cellular and Molecular Theranostics, School of Mechanical Engineering, Vellore Institute of Technology, Vellore, 632014 India
| | - Liang Lan
- School of Basic Medical Sciences, Clinical Medical College & Affiliated Hospital, Chengdu University, Chengdu, 610106 China
| | - Anwarul Hassan
- Department of Mechanical and Industrial Engineering, Biomedical Research Center, Qatar University, 2713, Doha, Qatar
| | - Hilal Turkoglu Sasmazel
- Department of Metallurgical and Materials Engineering, Faculty of Engineering, Atilim University, 06836 Ankara, Turkey
| | - Hirokazu Kaji
- Department of Biomechanics, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo, 101-0062 Japan
| | - Hans-Peter Deigner
- Institute of Precision Medicine, Medical and Life Sciences Faculty, Furtwangen University, 78054 Villingen-Schwenningen, Germany
| | - Jose Luis Pedraz
- NanoBioCel Group, Laboratory of Pharmaceutics, School of Pharmacy, University of the Basque Country, 01006 Vitoria-Gasteiz, Spain
- Biomedical Research Networking Centre in Bioengineering, Biomaterials and Nanomedicine, 28029 Madrid, Spain
| | - Hae-Won Kim
- Institute of Tissue Regeneration Engineering, Dankook University, Cheonan, 31116 Republic of Korea
- Department of Nanobiomedical Science, Dankook University, Cheonan, 31116 Republic of Korea
- BK21 NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan, 31116 Republic of Korea
- Mechanobiology Dental Medicine Research Center, Dankook University, Cheonan, 31116 Republic of Korea
- UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University, Cheonan, 31116 South Korea
| | - Zheng Shi
- School of Basic Medical Sciences, Clinical Medical College & Affiliated Hospital, Chengdu University, Chengdu, 610106 China
| | - Giovanna Marrazza
- Department of Chemistry “Ugo Schiff”, University of Florence, 50019 Sesto Fiorentino, Florence, Italy
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Zhang L, Chen J, Lu L, Yu R, Zhang D. A smartphone-assisted colorimetric aptasensor based on aptamer and gold nanoparticles for visual, fast and sensitive detection of ZEN in maize. Food Chem X 2023; 19:100792. [PMID: 37780345 PMCID: PMC10534090 DOI: 10.1016/j.fochx.2023.100792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 07/09/2023] [Accepted: 07/13/2023] [Indexed: 10/03/2023] Open
Abstract
A simple, fast, low cost, sensitive, intuitive, visual, label-free, and smartphone-assisted aptamer sensor based on colorimetric assay for the measurement of zearalenone was constructed. The nucleic acid aptamer of zearalenone was used as the recognition element and gold nanoparticles were used as the indicator. Several factors that could influence sensitivity, including the concentration of aptamer and NaCl, and incubation time, and specificity, have been investigated. The results showed that under the optimal conditions, the signal had a good linear relationship when zearalenone concentration is 5-300 ng/mL. A linear regression equation is Y = 0.0003X + 0.5128 (R2 = 0.9989) and a limit of detection is 5 ng/mL. The specificity of the sensor was good. Zearalenone in maize samples were successfully measured. The recoveries of Zearalenone are 81.3 %-96.4 %. The whole process takes only 15 min to complete. The smartphone assisted colorimetric aptamer sensor can be used for the detection of zearalenone in maize.
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Affiliation(s)
- Liyuan Zhang
- College of Food Science, Heilongjiang Bayi Agricultural University, 5 Xinfeng Road, Daqing 163319, PR China
| | - Jiayu Chen
- College of Food Science, Heilongjiang Bayi Agricultural University, 5 Xinfeng Road, Daqing 163319, PR China
| | - Lifeng Lu
- College of Food Science, Heilongjiang Bayi Agricultural University, 5 Xinfeng Road, Daqing 163319, PR China
| | - Runzhong Yu
- College of Information and Electrical Engineering, Heilongjiang Bayi Agricultural University, 5 Xinfeng Road, Daqing 163319, PR China
| | - Dongjie Zhang
- College of Food Science, Heilongjiang Bayi Agricultural University, 5 Xinfeng Road, Daqing 163319, PR China
- Chinese National Engineering Research Center, Daqing 163319, PR China
- Key Laboratory of Agro-products Processing and Quality Safety of Heilongjiang Province, Daqing 163319, PR China
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5
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Peteni S, Ozoemena OC, Khawula T, Haruna AB, Rawson FJ, Shai LJ, Ola O, Ozoemena KI. Electrochemical Immunosensor for Ultra-Low Detection of Human Papillomavirus Biomarker for Cervical Cancer. ACS Sens 2023. [PMID: 37384904 PMCID: PMC10391710 DOI: 10.1021/acssensors.3c00677] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/01/2023]
Abstract
Human papillomavirus (HPV) is the causative agent for cervical cancer. Of the various types of HPV, the high-risk HPV-16 type is the most important antigenic high-risk HPV. In this work, the antigenic HPV-16 L1 peptide was immobilized on a glassy carbon electrode and used to detect several concentrations of the anti-HPV-16 L1 antibody, and vice versa. Two electrode platforms were used: onion-like carbon (OLC) and its polyacrylonitrile (OLC-PAN) composites. Both platforms gave a wide linear concentration range (1.95 fg/mL to 6.25 ng/mL), excellent sensitivity (>5.2 μA/log ([HPV-16 L1, fg/mL]), and extra-ordinarily low limit of detection (LoD) of 1.83 fg/mL (32.7 aM) and 0.61 fg/mL (10.9 aM) for OLC-PAN and OLC-based immunosensors, respectively. OLC-PAN modified with the HPV-16 L1 protein showed low LoD for the HPV-16 L1 antibody (2.54 fg/mL, i.e., 45.36 aM), proving its potential use for screening purposes. The specificity of detection was proven with the anti-ovalbumin antibody (anti-OVA) and native ovalbumin protein (OVA). An immobilized antigenic HPV-16 L1 peptide showed insignificant interaction with anti-OVA in contrast with the excellent interaction with anti-HPV-16 L1 antibody, thus proving high specificity. The application of the immunosensor as a potential point-of-care (PoC) diagnostic device was investigated with screen-printed carbon electrodes, which detected ultra-low (ca. 0.7 fg/mL ≈ 12.5 aM) and high (ca. 12 μg/mL ≈ 0.21 μM) concentrations. This study represents the lowest LoD reported for HPV-16 L1. It opens the door for further investigation with other electrode platforms and realization of PoC diagnostic devices for screening and testing of HPV biomarkers for cervical cancer.
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Affiliation(s)
- Siwaphiwe Peteni
- Molecular Science Institute, School of Chemistry, University of the Witwatersrand, Johannesburg 2050, South Africa
| | - Okoroike C Ozoemena
- Molecular Science Institute, School of Chemistry, University of the Witwatersrand, Johannesburg 2050, South Africa
| | - Tobile Khawula
- Molecular Science Institute, School of Chemistry, University of the Witwatersrand, Johannesburg 2050, South Africa
| | - Aderemi B Haruna
- Molecular Science Institute, School of Chemistry, University of the Witwatersrand, Johannesburg 2050, South Africa
| | - Frankie J Rawson
- School of Pharmacy, Biodiscovery Institute University of Nottingham, Nottingham NG7 2RD, U.K
| | - Leshweni J Shai
- Department of Biomedical Sciences, Tshwane University of Technology, Pretoria 0001, South Africa
| | - Oluwafunmilola Ola
- Advanced Materials Group, Faculty of Engineering, The University of Nottingham, Nottingham NG7 2RD, U.K
| | - Kenneth I Ozoemena
- Molecular Science Institute, School of Chemistry, University of the Witwatersrand, Johannesburg 2050, South Africa
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6
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Fata F, Gabriele F, Angelucci F, Ippoliti R, Di Leandro L, Giansanti F, Ardini M. Bio-Tailored Sensing at the Nanoscale: Biochemical Aspects and Applications. SENSORS (BASEL, SWITZERLAND) 2023; 23:s23020949. [PMID: 36679744 PMCID: PMC9866807 DOI: 10.3390/s23020949] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 01/04/2023] [Accepted: 01/09/2023] [Indexed: 06/01/2023]
Abstract
The demonstration of the first enzyme-based electrode to detect glucose, published in 1967 by S. J. Updike and G. P. Hicks, kicked off huge efforts in building sensors where biomolecules are exploited as native or modified to achieve new or improved sensing performances. In this growing area, bionanotechnology has become prominent in demonstrating how nanomaterials can be tailored into responsive nanostructures using biomolecules and integrated into sensors to detect different analytes, e.g., biomarkers, antibiotics, toxins and organic compounds as well as whole cells and microorganisms with very high sensitivity. Accounting for the natural affinity between biomolecules and almost every type of nanomaterials and taking advantage of well-known crosslinking strategies to stabilize the resulting hybrid nanostructures, biosensors with broad applications and with unprecedented low detection limits have been realized. This review depicts a comprehensive collection of the most recent biochemical and biophysical strategies for building hybrid devices based on bioconjugated nanomaterials and their applications in label-free detection for diagnostics, food and environmental analysis.
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Wang A, Zhou Y, Chen Y, Zhou J, You X, Liu H, Liu Y, Ding P, Qi Y, Liang C, Zhu X, Zhang Y, Liu E, Zhang G. Electrochemical immunosensor for ultrasensitive detection of human papillomaviruse type 16 L1 protein based on Ag@AuNPs-GO/SPA. Anal Biochem 2023; 660:114953. [PMID: 36243135 DOI: 10.1016/j.ab.2022.114953] [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: 06/21/2022] [Revised: 09/30/2022] [Accepted: 10/07/2022] [Indexed: 12/14/2022]
Abstract
Human papillomaviruse type 16 (HPV16) is a high-risk serotype. As the main protective antigen protein, L1 protein is also the target protein for diagnosis. A simple label free electrochemical immunosensor (ECIS) was fabricated for ultrasensitive detection of HPV16 L1 protein in this work. Quasi-spherical Ag@Au core-shell nanoparticles on graphene oxide (Ag@AuNPs-GO) was developed as current response amplifier and characterized by UV-Vis Spectroscopy, Transmission Electron Microscopy and energy dispersive X-ray spectroscopy. Staphylococcal protein A was decorated on the modified electrode and utilized to immobilized the Fc portion of the monoclonal antibody specific for HPV16 L1 protein. Cyclic Voltammetry, Differential Pulse Voltammetry and Electrochemical Impedance Spectroscopy were used to verify the electrochemical performance and interfacial kinetic property. The increased concentration of HPV16 L1 protein led to slow electron transport and linearly decreased differential pulse voltammetry peak current with a detection limit of 0.002 ng mL-1 and a wide linear relationship in the range of 0.005-400 ng mL-1at a regression coefficient (R2) of 0.9948. Furthermore, this ECIS demonstrated acceptable accuracy with good reproducibility, stability and selectivity, suggesting a promising immunological strategy for HPV typing and early screening.
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Affiliation(s)
- Aiping Wang
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450000, China; Longhu Laboratory, Zhengzhou, 451100, China; College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002, China
| | - Yiting Zhou
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450000, China; Longhu Laboratory, Zhengzhou, 451100, China
| | - Yumei Chen
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450000, China; Longhu Laboratory, Zhengzhou, 451100, China
| | - Jingming Zhou
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450000, China; Longhu Laboratory, Zhengzhou, 451100, China
| | - Xiaojuan You
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450000, China; Longhu Laboratory, Zhengzhou, 451100, China
| | - Hongliang Liu
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450000, China; Longhu Laboratory, Zhengzhou, 451100, China
| | - Yankai Liu
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450000, China; Longhu Laboratory, Zhengzhou, 451100, China
| | - Peiyang Ding
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450000, China; Longhu Laboratory, Zhengzhou, 451100, China
| | - Yanhua Qi
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450000, China; Longhu Laboratory, Zhengzhou, 451100, China
| | - Chao Liang
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450000, China; Longhu Laboratory, Zhengzhou, 451100, China
| | - Xifang Zhu
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450000, China; Longhu Laboratory, Zhengzhou, 451100, China
| | - Ying Zhang
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450000, China; Longhu Laboratory, Zhengzhou, 451100, China
| | - Enping Liu
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450000, China; Longhu Laboratory, Zhengzhou, 451100, China
| | - Gaiping Zhang
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450000, China; Longhu Laboratory, Zhengzhou, 451100, China; School of Advanced Agricultural Sciences, Peking University, Beijing, 100871, China; College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002, China.
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8
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Nguyen DK, Jang CH. Ultrasensitive colorimetric detection of amoxicillin based on Tris-HCl-induced aggregation of gold nanoparticles. Anal Biochem 2022; 645:114634. [PMID: 35271807 DOI: 10.1016/j.ab.2022.114634] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 02/15/2022] [Accepted: 02/28/2022] [Indexed: 11/26/2022]
Abstract
An ultrasensitive colorimetric aptasensor for the detection of amoxicillin (AMO) based on the Tris-HCl buffer-induced aggregation of gold nanoparticles (AuNPs) was developed. The AuNPs were aggregated by the addition of Tris-HCl buffer. The adsorption of the aptamer on the AuNP surface increased its negative charge density, leading to the enhancement of the electrostatic repulsion between the nanoparticles, thus protecting AuNPs from aggregation in the Tris-HCl buffer. However, the specific binding of the aptamer with AMO induced conformational changes in the aptamer, which reduced the adsorption of the aptamer on the AuNP surface, diminishing the protective effect of the aptamer. This resulted in the aggregation of AuNPs by Tris-HCl buffer, and consequently, color change of the solution containing AuNPs from red to blue. Under optimized conditions, a linear relationship between the absorbance ratio variation (ΔA680/A520) and the AMO concentration was observed in the concentration range of 0.1-125 nM, with a detection limit of 67 pM. The developed biosensor exhibited high selectivity toward AMO. Moreover, this strategy was successfully applied to the detection of AMO in lake water samples. Thus, the present aptasensor is a promising alternative for the simple and ultrasensitive detection of AMO in the environment.
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Affiliation(s)
- Duy Khiem Nguyen
- Department of Chemistry, Gachon University, Seongnam-daero 1342, Sujeong-gu, Seongnam-si, Gyeonggi-do, 13120, Republic of Korea
| | - Chang-Hyun Jang
- Department of Chemistry, Gachon University, Seongnam-daero 1342, Sujeong-gu, Seongnam-si, Gyeonggi-do, 13120, Republic of Korea.
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Divya, Dkhar DS, Kumari R, Mahapatra S, Kumar R, Chandra P. Ultrasensitive Aptasensors for the Detection of Viruses Based on Opto-Electrochemical Readout Systems. BIOSENSORS 2022; 12:81. [PMID: 35200341 PMCID: PMC8869721 DOI: 10.3390/bios12020081] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 01/24/2022] [Accepted: 01/27/2022] [Indexed: 05/14/2023]
Abstract
Viral infections are becoming the foremost driver of morbidity, mortality and economic loss all around the world. Treatment for diseases associated to some deadly viruses are challenging tasks, due to lack of infrastructure, finance and availability of rapid, accurate and easy-to-use detection methods or devices. The emergence of biosensors has proven to be a success in the field of diagnosis to overcome the challenges associated with traditional methods. Furthermore, the incorporation of aptamers as bio-recognition elements in the design of biosensors has paved a way towards rapid, cost-effective, and specific detection devices which are insensitive to changes in the environment. In the last decade, aptamers have emerged to be suitable and efficient biorecognition elements for the detection of different kinds of analytes, such as metal ions, small and macro molecules, and even cells. The signal generation in the detection process depends on different parameters; one such parameter is whether the labelled molecule is incorporated or not for monitoring the sensing process. Based on the labelling, biosensors are classified as label or label-free; both have their significant advantages and disadvantages. Here, we have primarily reviewed the advantages for using aptamers in the transduction system of sensing devices. Furthermore, the labelled and label-free opto-electrochemical aptasensors for the detection of various kinds of viruses have been discussed. Moreover, numerous globally developed aptasensors for the sensing of different types of viruses have been illustrated and explained in tabulated form.
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Affiliation(s)
| | | | | | | | | | - Pranjal Chandra
- Laboratory of Bio-Physio Sensors and Nanobioengineering, School of Biochemical Engineering, Indian Institute of Technology (BHU) Varanasi, Varanasi 221005, Uttar Pradesh, India; (D.); (D.S.D.); (R.K.); (S.M.); (R.K.)
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10
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Nguyen DK, Jang CH. A Simple and Ultrasensitive Colorimetric Biosensor for Anatoxin-a Based on Aptamer and Gold Nanoparticles. MICROMACHINES 2021; 12:1526. [PMID: 34945376 PMCID: PMC8703760 DOI: 10.3390/mi12121526] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 12/06/2021] [Accepted: 12/07/2021] [Indexed: 12/31/2022]
Abstract
Here, we designed a simple, rapid, and ultrasensitive colorimetric aptasensor for detecting anatoxin-a (ATX-a). The sensor employs a DNA aptamer as the sensing element and gold nanoparticles (AuNPs) as probes. Adsorption of the aptamer onto the AuNP surface can protect AuNPs from aggregation in NaCl solution, thus maintaining their dispersion state. In the presence of ATX-a, the specific binding of the aptamer with ATX-a results in a conformational change in the aptamer, which facilitates AuNP aggregation and, consequently, a color change of AuNPs from red to blue in NaCl solution. This color variation is directly associated with ATX-a concentration and can be easily measured using a UV/Vis spectrophotometer. The absorbance variation is linearly proportional to ATX-a concentration across the concentration range of 10 pM to 200 nM, with a detection limit of 4.45 pM and high selectivity against other interferents. This strategy was successfully applied to the detection of ATX-a in lake water samples. Thus, the present aptasensor is a promising alternative method for the rapid detection of ATX-a in the environment.
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Affiliation(s)
| | - Chang-Hyun Jang
- Department of Chemistry, Gachon University, Seongnam-daero 1342, Sujeong-gu, Seongnam-si 13120, Korea;
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