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Wang Y, Zhu L, Guo P, Zhang Y, Lan X, Xu W. Research progress of All-in-One PCR tube biosensors based on functional modification and intelligent fabrication. Biosens Bioelectron 2024; 246:115824. [PMID: 38029707 DOI: 10.1016/j.bios.2023.115824] [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: 08/16/2023] [Revised: 10/30/2023] [Accepted: 11/06/2023] [Indexed: 12/01/2023]
Abstract
PCR amplification technology is the cornerstone of molecular biology. All-in-One PCR tube, as an emerging integrated device, is booming in biosensors application. All-in-One PCR tube biosensors are integrated PCR tubes designed for signal recognition, signal amplification or signal output. They enable "one-pot" detection within functionally modified and intelligently fabricated PCR tubes, effectively overcoming the limitations of conventional PCR applications, like complex procedural steps, risk of contamination and so on. Based on this, the review article summarizes the recent advance of All-in-One PCR tube biosensors for the first time as well as systematically categorizes five approaches of functional modification, three types of intelligent fabrication and relevant property characterization techniques. More emphasis is placed on the review of five ways of functional modification, including physical modification, chemical modification, UV photografting surface treatment, plasma surface modification, and layer-by-layer assembly coating. Moreover, All-in-One PCR tube biosensors covering different recognition elements range from small molecules to protein are detailed discussed on principle of sensing, providing a deeper understanding of the design and application of All-in-One-tube biosensor. Last, the future opportunities and challenges in this fascinating field are also deliberated.
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Affiliation(s)
- Yanhui Wang
- Key Laboratory of Precision Nutrition and Food Quality, Beijing Laboratory for Food Quality and Safety, Department of Nutrition and Health, China Agricultural University, Beijing, 100191, China
| | - Longjiao Zhu
- Key Laboratory of Precision Nutrition and Food Quality, Beijing Laboratory for Food Quality and Safety, Department of Nutrition and Health, China Agricultural University, Beijing, 100191, China
| | - Peijin Guo
- Key Laboratory of Precision Nutrition and Food Quality, Beijing Laboratory for Food Quality and Safety, Department of Nutrition and Health, China Agricultural University, Beijing, 100191, China
| | - Yangzi Zhang
- Key Laboratory of Precision Nutrition and Food Quality, Beijing Laboratory for Food Quality and Safety, Department of Nutrition and Health, China Agricultural University, Beijing, 100191, China
| | - Xinyue Lan
- Key Laboratory of Precision Nutrition and Food Quality, Beijing Laboratory for Food Quality and Safety, Department of Nutrition and Health, China Agricultural University, Beijing, 100191, China
| | - Wentao Xu
- Key Laboratory of Precision Nutrition and Food Quality, Beijing Laboratory for Food Quality and Safety, Department of Nutrition and Health, China Agricultural University, Beijing, 100191, China.
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Chen H, Li Q, Hu B, Zhu W, Xia H, Yang W. Analyte-triggered cascade signal amplification strategy for highly sensitive detection of iodate in table salt with dual-readout signals. Talanta 2023; 261:124661. [PMID: 37201339 DOI: 10.1016/j.talanta.2023.124661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 05/08/2023] [Accepted: 05/09/2023] [Indexed: 05/20/2023]
Abstract
A novel and highly sensitive upconversion fluorescence and colorimetric dual readout iodate (IO3-) nanosensor system was constructed by using both the outstanding optical performance of NaYF4:Yb, Tm upconversion nanoparticles (UCNPs) and the analyte-triggered cascade signal amplification (CSA) technique. The construction of the sensing system consisted of three processes. First, IO3- oxidized o-phenylenediamine (OPD) to diaminophenazine (OPDox), while IO3- was reduced to I2. Second, the generated I2 can further oxidize OPD to OPDox. This mechanism has been verified by 1H NMR spectra titration analysis and HRMS measurement, which effectively improves the selectivity and sensitivity of the measurement of IO3-. Third, the generated OPDox can effectively quench the fluorescence of UCNPs via the inner filter effect (IFE), realize analyte-triggered CSA, and allow quantitative determination of IO3-. Under the optimized conditions, the fluorescence quenching efficiency showed a good linear relationship to IO3- concentration in the range of 0.06-100 μM, and the detection limit reached 0.026 μM (3RSD/slope). Moreover, this method was applied to detect IO3- in table salt samples, yielding satisfactory determination results with excellent recoveries (95.5-105%) and high precision (RSD <5.5%). These results suggest that the dual-readout sensing strategy with well-defined response mechanisms has promising application prospects in physiological and pathological studies.
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Affiliation(s)
- Hongyu Chen
- Henan Key Laboratory of Rare Earth Functional Materials; International Joint Research Laboratory for Biomedical Nanomaterials of Henan, Zhoukou Normal University, Zhoukou, 466001, China; Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China.
| | - Qingfeng Li
- Henan Key Laboratory of Rare Earth Functional Materials; International Joint Research Laboratory for Biomedical Nanomaterials of Henan, Zhoukou Normal University, Zhoukou, 466001, China
| | - Bin Hu
- Henan Key Laboratory of Rare Earth Functional Materials; International Joint Research Laboratory for Biomedical Nanomaterials of Henan, Zhoukou Normal University, Zhoukou, 466001, China
| | - Wenping Zhu
- Henan Key Laboratory of Rare Earth Functional Materials; International Joint Research Laboratory for Biomedical Nanomaterials of Henan, Zhoukou Normal University, Zhoukou, 466001, China
| | - Hongjun Xia
- Henan Key Laboratory of Rare Earth Functional Materials; International Joint Research Laboratory for Biomedical Nanomaterials of Henan, Zhoukou Normal University, Zhoukou, 466001, China
| | - Weijie Yang
- Henan Key Laboratory of Rare Earth Functional Materials; International Joint Research Laboratory for Biomedical Nanomaterials of Henan, Zhoukou Normal University, Zhoukou, 466001, China
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Lan Y, He B, Tan CS, Ming D. Applications of Smartphone-Based Aptasensor for Diverse Targets Detection. BIOSENSORS 2022; 12:bios12070477. [PMID: 35884280 PMCID: PMC9312806 DOI: 10.3390/bios12070477] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 06/27/2022] [Accepted: 06/27/2022] [Indexed: 12/17/2022]
Abstract
Aptamers are a particular class of functional recognition ligands with high specificity and affinity to their targets. As the candidate recognition layer of biosensors, aptamers can be used to sense biomolecules. Aptasensors, aptamer-based biosensors, have been demonstrated to be specific, sensitive, and cost-effective. Furthermore, smartphone-based devices have shown their advantages in binding to aptasensors for point-of-care testing (POCT), which offers an immediate or spontaneous responding time for biological testing. This review describes smartphone-based aptasensors to detect various targets such as metal ions, nucleic acids, proteins, and cells. Additionally, the focus is also on aptasensors-related technologies and configurations.
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Affiliation(s)
- Ying Lan
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin 300072, China; (Y.L.); (B.H.)
| | - Baixun He
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin 300072, China; (Y.L.); (B.H.)
| | - Cherie S. Tan
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin 300072, China; (Y.L.); (B.H.)
- Tianjin Key Laboratory of Brain Science and Neuroengineering, Tianjin 300072, China
- Correspondence: (C.S.T.); (D.M.)
| | - Dong Ming
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin 300072, China; (Y.L.); (B.H.)
- Tianjin Key Laboratory of Brain Science and Neuroengineering, Tianjin 300072, China
- Department of Biomedical Engineering, College of Precision Instruments and Optoelectronics Engineering, Tianjin University, Tianjin 300072, China
- Correspondence: (C.S.T.); (D.M.)
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Guo Z, Tian J, Cui C, Wang Y, Yang H, Yuan M, Yu H. A label-free aptasensor for turn-on fluorescent detection of ochratoxin a based on SYBR gold and single walled carbon nanohorns. Food Control 2021. [DOI: 10.1016/j.foodcont.2020.107741] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Mao Y, Sun M, Hong X, Chakraborty S, Duan J, Li M, Du D. Semi-quantitative and quantitative detection of ochratoxin A in agricultural by-products using a self-assembling immunochromatographic strip. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2021; 101:1659-1665. [PMID: 32892405 DOI: 10.1002/jsfa.10786] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 08/27/2020] [Accepted: 09/05/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND The toxicity and health risks of mycotoxins have encouraged increased awareness and strict monitoring of these contaminants in agricultural by-products. In this paper, we developed and tested a sensitive, selective, and self-assembling immunochromatographic (IC) strip for on-site detection of ochratoxin A (OTA). We were able to demonstrate semi-quantitative and quantitative detection of OTA in agricultural by-product samples. RESULTS The optimized IC strip had a limit of detection (LOD) of 0.5 ng mL-1 OTA using the naked eye for semi-quantitative detection. When a digitized strip reader was used to achieve quantitative results, the LOD for OTA was reduced to 0.1 ng mL-1 with a linear detection range of 0.1-10 ng mL-1 . We also evaluated the specificity, stability, accuracy, and precision of the IC strip and demonstrated high performance in all of these areas. We then confirmed the ability of the IC strip to visually detect OTA contamination in authentic agricultural by-product samples from the markets in China. Furthermore, quantitative detection of OTA using the IC strip showed that the concentration of OTA ranged from 1.7 to 101.3 ng g-1 in the positive agricultural by-product samples, correlating well with the measurements obtained via liquid chromatography with tandem mass spectrometry. CONCLUSION The results indicated that this proposed IC strip was capable of sensitive, semi-quantitative, quantitative, and on-site detection of OTA contamination in agricultural by-product samples. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Yuhao Mao
- Institute of Environmental Health and Ecological Security, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, P. R. China
| | - Mingna Sun
- Institute of Plant Protection and Agro-Product Safety, Anhui Academy of Agricultural Sciences, Key Laboratory of Agro-Product Safety Risk Evaluation, Ministry of Agriculture, Hefei, P.R. China
| | - Xia Hong
- Institute of Environmental Health and Ecological Security, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, P. R. China
| | - Sagnik Chakraborty
- Institute of Environmental Health and Ecological Security, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, P. R. China
| | - Jinsheng Duan
- Institute of Plant Protection and Agro-Product Safety, Anhui Academy of Agricultural Sciences, Key Laboratory of Agro-Product Safety Risk Evaluation, Ministry of Agriculture, Hefei, P.R. China
| | - Ming Li
- Institute of Environmental Health and Ecological Security, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, P. R. China
| | - Daolin Du
- Institute of Environmental Health and Ecological Security, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, P. R. China
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Abstract
Background:
Highly sensitive and rapid analysis of food contaminants is of great significance
for food safety control. Aptamer is a new kind of recognition molecules which could be applied
for constructing homogeneous analysis assays, potentially achieving highly sensitive, cheap and rapid
profiling of food contaminants.
Methods:
An overview of the literature concerning the homogeneous analysis of food contaminations
based on aptamers has been reviewed (focused on the most recent literature, 2000-2018).
Results:
Attributed to aptamer’s controllability, designability and feasibility for the adoption of nucleic
acid amplification, rapid, highly sensitive homogeneous assay for various food contaminants could
be constructed. The structure-switching aptamer probe would confer quick, efficient and specific response
to target food contaminants. Besides, the capability of amplification of aptamer sequences or
nucleic acid probes would lead to highly sensitive detection.
Conclusion:
Aptamer-based homogeneous analysis methods have already been applied to detect various
food contaminations ranging from toxins, heavy metal and pesticide to allergen and pathogenic
bacteria. However, it is still a challenge to achieve robust and accurate detection of food contaminants
in complex food samples.
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Affiliation(s)
- Xuhan Xia
- College of Light Industry, Textile and Food Engineering, Healthy Food Evaluation Research Center and Key Laboratory of Food Science and Technology of Ministry of Education of Sichuan Province, Sichuan University, Chengdu 610065, China
| | - Qiang He
- College of Light Industry, Textile and Food Engineering, Healthy Food Evaluation Research Center and Key Laboratory of Food Science and Technology of Ministry of Education of Sichuan Province, Sichuan University, Chengdu 610065, China
| | - Yi Dong
- College of Light Industry, Textile and Food Engineering, Healthy Food Evaluation Research Center and Key Laboratory of Food Science and Technology of Ministry of Education of Sichuan Province, Sichuan University, Chengdu 610065, China
| | - Ruijie Deng
- College of Light Industry, Textile and Food Engineering, Healthy Food Evaluation Research Center and Key Laboratory of Food Science and Technology of Ministry of Education of Sichuan Province, Sichuan University, Chengdu 610065, China
| | - Jinghong Li
- Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Department of Chemistry, Tsinghua University, Beijing 100084, China
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A portable and universal upconversion nanoparticle-based lateral flow assay platform for point-of-care testing. Talanta 2019; 201:126-133. [PMID: 31122402 DOI: 10.1016/j.talanta.2019.03.105] [Citation(s) in RCA: 82] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Revised: 03/24/2019] [Accepted: 03/30/2019] [Indexed: 01/31/2023]
Abstract
Upconversion nanoparticle-based lateral flow assays (UCNP-LFAs) have attracted significant attention in point-of-care testing (POCT) applications, due to the long-term photostability and enhanced signal-to-background noise ratio. The existing UCNP-LFAs generally require peripheral equipment for exciting fluorescent signals and reading out fluorescence results, which are generally bulky and expensive. Herein, we developed a miniaturized and portable UCNP-LFA platform, which is composed of a LFA detection system, an UCNP-LFA reader and a smartphone-assisted UCNP-LFA analyzer. The LFA detection system is based on three types of UCNPs for multiplexed detection. The reader has a dimension of 24.0 cm × 9.4 cm × 5.4 cm (L × W × H) and weight of 0.9 kg. The analyzer based on the custom-designed software of a smartphone (termed as UCNP-LFA analyzer) can get the quantitative analysis results in a real-time manner. We demonstrated the universality of this platform by highly sensitive and quantitative detections of several kinds of targets, including small molecule (ochratoxin A, OTA), heavy metal ion (Hg2+), bacteria (salmonella, SE), nucleic acid (hepatitis B virus, HBV) and protein (growth stimulation expressed gene 2, ST-2). Our developed UCNP-LFA platform holds great promise for applications in disease diagnostics, environmental pollution monitoring and food safety at the point of care.
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Yin X, Wang S, Liu X, He C, Tang Y, Li Q, Liu J, Su H, Tan T, Dong Y. Aptamer-based Colorimetric Biosensing of Ochratoxin A in Fortified White Grape Wine Sample Using Unmodified Gold Nanoparticles. ANAL SCI 2018; 33:659-664. [PMID: 28603182 DOI: 10.2116/analsci.33.659] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
In this study, a simple and sensitive aptamer-based colorimetric method for the detection of Ochratoxin A by using gold nanoparticles (AuNPs) has been developed. In this assay, unmodified gold nanoparticles (AuNPs) were used as probes with a 36-mer aptamer as recognition element. In the absence of ochratoxin A, free aptamer could be adsorbed onto the surface of AuNPs and protect AuNPs from aggregation even with high concentrations of salt. The salt-induced aggregation of AuNPs was caused by the specific recognition of aptamers with OTA. Under optimum conditions, calibration modeling showed that the analytical linear range covered from 32 to 1024 ng/mL and the detection limit of 20 ng/mL was realized successfully. This proposed colorimetric bio-assay also showed high selectivity over other antibody based methods. Meanwhile, this strategy was further used to determine the concentrations of ochratoxin A in white wine sample with satisfying recovery rates.
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Affiliation(s)
- Xueting Yin
- Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology
| | - Sai Wang
- Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology
| | - Xiaoyun Liu
- Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology
| | - Chenmeng He
- Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology
| | - Yali Tang
- Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology
| | - Qimeng Li
- Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology
| | - Jiahui Liu
- Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology
| | - Haijia Su
- Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology
| | - Tianwei Tan
- Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology
| | - Yiyang Dong
- Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology
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Evtugyn G, Subjakova V, Melikishvili S, Hianik T. Affinity Biosensors for Detection of Mycotoxins in Food. ADVANCES IN FOOD AND NUTRITION RESEARCH 2018; 85:263-310. [PMID: 29860976 DOI: 10.1016/bs.afnr.2018.03.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
This chapter reviews recent achievements in methods of detection of mycotoxins in food. Special focus is on the biosensor technology that utilizes antibodies and nucleic acid aptamers as receptors. Development of biosensors is based on the immobilization of antibodies or aptamers onto various conventional supports like gold layer, but also on nanomaterials such as graphene oxide, carbon nanotubes, and quantum dots that provide an effective platform for achieving high sensitivity of detection using various physical methods, including electrochemical, mass sensitive, and optical. The biosensors developed so far demonstrate high sensitivity typically in subnanomolar limit of detection. Several biosensors have been validated in real samples. The sensitivity of biosensors is similar and, in some cases, even better than traditional analytical methods such as ELISA or chromatography. We believe that future trends will be focused on improving biosensor properties toward practical application in food industry.
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Affiliation(s)
- Gennady Evtugyn
- Analytical Chemistry Department, Chemistry Institute of Kazan Federal University, Kazan, Russian Federation
| | - Veronika Subjakova
- Department of Nuclear Physics and Biophysics, Comenius University, Bratislava, Slovakia
| | - Sopio Melikishvili
- Department of Nuclear Physics and Biophysics, Comenius University, Bratislava, Slovakia
| | - Tibor Hianik
- Department of Nuclear Physics and Biophysics, Comenius University, Bratislava, Slovakia.
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Cai J, Hao C, Sun M, Ma W, Xu C, Kuang H. Chiral Shell Core-Satellite Nanostructures for Ultrasensitive Detection of Mycotoxin. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1703931. [PMID: 29424128 DOI: 10.1002/smll.201703931] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2017] [Revised: 01/03/2018] [Indexed: 06/08/2023]
Abstract
Herein, the design of a DNA-based chiral biosensor is described utilizing the self-assembly of shell core-gold (Au) satellite nanostructures for the detection of mycotoxin, ochratoxin A (OTA). The assembly of core-satellite nanostructures based on OTA-aptamer binding exhibits a strong chiral signal with an intense circular dichroism (CD) peak. The integrity of the assembly of core-satellite nanostructures is limited to some extent in the presence of different levels of OTA. Correspondingly, the chiral intensity of assembly is weakened with increasing OTA concentrations, allowing quantitative determination of the target. The developed chiral sensor shows an excellent linear relationship between the CD signal and concentrations of OTA in the range of 0.1-5 pg mL-1 with a limit of detection as low as 0.037 pg mL-1 . The effectiveness of the biosensor in a sample of red wine is verified and a good recovery rate is obtained. These results suggest that the strategy has great potential for practical application.
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Affiliation(s)
- Jiarong Cai
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
- International Joint Research Laboratory for Biointerface and Biodetection, and School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
| | - Changlong Hao
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
- International Joint Research Laboratory for Biointerface and Biodetection, and School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
| | - Maozhong Sun
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
- International Joint Research Laboratory for Biointerface and Biodetection, and School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
| | - Wei Ma
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
- International Joint Research Laboratory for Biointerface and Biodetection, and School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
| | - Chuanlai Xu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
- International Joint Research Laboratory for Biointerface and Biodetection, and School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
| | - Hua Kuang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
- International Joint Research Laboratory for Biointerface and Biodetection, and School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
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Ultrasensitive detection of aflatoxin B1 and its major metabolite aflatoxin M1 using aptasensors: A review. Trends Analyt Chem 2018. [DOI: 10.1016/j.trac.2017.12.009] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Zou M, Li D, Yuan R, Xiang Y. Metal-ion dependent DNAzyme recycling amplification for sensitive and homogeneous immuno-proximity binding assay of α-fetoprotein biomarker. Biosens Bioelectron 2017; 92:624-629. [DOI: 10.1016/j.bios.2016.10.044] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Revised: 10/04/2016] [Accepted: 10/19/2016] [Indexed: 11/30/2022]
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Qing Y, Li X, Chen S, Zhou X, Luo M, Xu X, Li C, Qiu J. Differential pulse voltammetric ochratoxin A assay based on the use of an aptamer and hybridization chain reaction. Mikrochim Acta 2017. [DOI: 10.1007/s00604-017-2080-z] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Wei M, Zhang W. A novel impedimetric aptasensor based on AuNPs–carboxylic porous carbon for the ultrasensitive detection of ochratoxin A. RSC Adv 2017. [DOI: 10.1039/c7ra04209d] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
A novel impedimetric aptasensor based on AuNPs–carboxylic porous carbon for the ultrasensitive detection of OTA.
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Affiliation(s)
- Min Wei
- College of Food Science and Technology
- Henan University of Technology
- Zhengzhou 450001
- PR China
| | - Wenyang Zhang
- College of Food Science and Technology
- Henan University of Technology
- Zhengzhou 450001
- PR China
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Hao N, Jiang L, Qian J, Wang K. Ultrasensitive electrochemical Ochratoxin A aptasensor based on CdTe quantum dots functionalized graphene/Au nanocomposites and magnetic separation. J Electroanal Chem (Lausanne) 2016. [DOI: 10.1016/j.jelechem.2016.09.053] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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Qian J, Wang K, Wang C, Hua M, Yang Z, Liu Q, Mao H, Wang K. A FRET-based ratiometric fluorescent aptasensor for rapid and onsite visual detection of ochratoxin A. Analyst 2016; 140:7434-42. [PMID: 26396995 DOI: 10.1039/c5an01403d] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A color change observable by the naked eye to indicate the content of an analyte is considered to be the most conceivable way of various sensing protocols. By taking advantage of the Förster resonance energy transfer (FRET) principles, we herein designed a dual-emission ratiometric fluorescent aptasensor for ochratoxin A (OTA) detection via a dual mode of fluorescent sensing and onsite visual screening. Amino group-modified OTA's aptamer was firstly labeled with the green-emitting CdTe quantum dots (gQDs) donor. The red-emitting CdTe QDs (rQDs) which were wrapped in the silica sphere could serve as the reference signal, while the gold nanoparticle (AuNP) acceptors were attached on the silica surface to bind with the thiolated complementary DNA (cDNA). The hybridization reaction between the aptamer and the cDNA brought gQD-AuNP pair close enough, thereby making the FRET occur in the aptasensor fabrication, while the subsequent fluorescence recovery induced by OTA was obtained in the detection procedure. Based on the red background of the wrapped rQDs, the aptasensor in response to increasing OTA displayed a distinguishable color change from red to yellow-green, which could be conveniently readout in solution even by the naked eye. Since the bioconjugations used as the aptasensor can be produced at large scale, this method can be used for in situ, rapid, or high-throughput OTA detection after only an incubation step in a homogeneous mode. We believe that this novel aptasensing strategy provides not only a promising method for OTA detection but also a universal model for detecting diverse targets by changing the corresponding aptamer.
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Affiliation(s)
- Jing Qian
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China.
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Aptamers as Synthetic Receptors for Food Quality and Safety Control. BIOSENSORS FOR SUSTAINABLE FOOD - NEW OPPORTUNITIES AND TECHNICAL CHALLENGES 2016. [DOI: 10.1016/bs.coac.2016.03.021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Ha TH. Recent Advances for the Detection of Ochratoxin A. Toxins (Basel) 2015; 7:5276-300. [PMID: 26690216 PMCID: PMC4690132 DOI: 10.3390/toxins7124882] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Revised: 11/25/2015] [Accepted: 11/26/2015] [Indexed: 12/15/2022] Open
Abstract
Ochratoxin A (OTA) is one of the mycotoxins secreted by Aspersillus and Penicillium that can easily colonize various grains like coffee, peanut, rice, and maize. Since OTA is a chemically stable compound that can endure the physicochemical conditions of modern food processing, additional research efforts have been devoted to develop sensitive and cost-effective surveillance solutions. Although traditional chromatographic and immunoassays appear to be mature enough to attain sensitivity up to the regulation levels, alternative detection schemes are still being enthusiastically pursued in an attempt to meet the requirements of rapid and cost-effective detections. Herein, this review presents recent progresses in OTA detections with minimal instrumental usage, which have been facilitated by the development of OTA aptamers and by the innovations in functional nanomaterials. In addition to the introduction of aptamer-based OTA detection techniques, OTA-specific detection principles are also presented, which exclusively take advantage of the unique chemical structure and related physicochemical characteristics.
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Affiliation(s)
- Tai Hwan Ha
- BioNanotechnology Research Centre, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Korea.
- Nanobiotechnology (Major), Korea University of Science & Technology, 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Korea.
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Wang C, Qian J, Wang K, Yang X, Liu Q, Hao N, Wang C, Dong X, Huang X. Colorimetric aptasensing of ochratoxin A using Au@Fe3O4 nanoparticles as signal indicator and magnetic separator. Biosens Bioelectron 2015; 77:1183-91. [PMID: 26583358 DOI: 10.1016/j.bios.2015.11.004] [Citation(s) in RCA: 113] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Revised: 10/23/2015] [Accepted: 11/02/2015] [Indexed: 01/16/2023]
Abstract
Gold nanoparticles (Au NPs) doped Fe3O4 (Au@Fe3O4) NPs have been synthesized by a facile one-step solvothermal method. The peroxidase-like activity of Au@Fe3O4 NPs was effectively enhanced due to the synergistic effect between the Fe3O4 NPs and Au NPs. On this basis, an efficient colorimetric aptasensor has been developed using the intrinsic dual functionality of the Au@Fe3O4 NPs as signal indicator and magnetic separator. Initially, the amino-modified aptamer specific for a typical mycotoxin, ochratoxin A (OTA), was surface confined on the amino-terminated glass beads surafce using glutaraldehyde as a linker. Subsequently, the amino-modified capture DNA (cDNA) was labeled with the amino-functionalized Au@Fe3O4 NPs and the aptasensor was thus fabricated through the hybridization reaction between cDNA and the aptamers. While upon OTA addition, aptamers preferred to form the OTA-aptamer complex and the Au@Fe3O4 NPs linked on the cDNA were released into the bulk solution. Through a simple magnetic separation, the collected Au@Fe3O4 NPs can produce a blue colored solution in the presence of 3,3',5,5'-tetramethylbenzidine and H2O2. When the reaction was terminated by addition of H(+) ions, the blue product could be changed into a yellow one with higher absorption intensity. This colorimetric aptasensor can detect as low as 30 pgmL(-1) OTA with high specificity. To the best of our knowledge, the present colorimetric aptasensor is the first attempt to use the peroxidase-like activity of nanomaterial for OTA detection, which may provide an acttractive path toward routine quality control of food safety.
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Affiliation(s)
- Chengquan Wang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Jing Qian
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Kun Wang
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
| | - Xingwang Yang
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Qian Liu
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Nan Hao
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Chengke Wang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Xiaoya Dong
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Xingyi Huang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, PR China.
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Zhao Y, Yang Y, Luo Y, Yang X, Li M, Song Q. Double Detection of Mycotoxins Based on SERS Labels Embedded Ag@Au Core-Shell Nanoparticles. ACS APPLIED MATERIALS & INTERFACES 2015; 7:21780-6. [PMID: 26381109 DOI: 10.1021/acsami.5b07804] [Citation(s) in RCA: 128] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
A sensitive surface-enhanced Raman scattering (SERS) signal dependent double detection of mycotoxins is achieved for the first time, without the aid of nucleic acid amplification strategies. SERS labels embedded Ag@Au core-shell (CS) nanoparticles (NPs) as novel SERS tags are successfully prepared through a galvanic replacement-free deposition. SERS tags produce stable and quantitative SERS signal, emerging from the plasmonic coupling at the junction of Ag core and Au shell. SERS tags engineered Raman aptasensors are developed for the double detection of ochratoxin A (OTA) and aflatoxin B1 (AFB1) in maize meal. The limits of detection (LODs) are as low as 0.006 ng/mL for OTA and 0.03 ng/mL for AFB1. The developed protocol can be extended to a large set of different SERS tags for the sensitive detection of multiple targets that possess different lengths of aptamers.
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Affiliation(s)
- Yuan Zhao
- The Key Lab of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University , Wuxi, Jiangsu 214122, People's Republic of China
| | - Yaxin Yang
- The Key Lab of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University , Wuxi, Jiangsu 214122, People's Republic of China
| | - Yaodong Luo
- The Key Lab of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University , Wuxi, Jiangsu 214122, People's Republic of China
| | - Xuan Yang
- The Key Lab of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University , Wuxi, Jiangsu 214122, People's Republic of China
| | - Manli Li
- The Key Lab of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University , Wuxi, Jiangsu 214122, People's Republic of China
| | - Qijun Song
- The Key Lab of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University , Wuxi, Jiangsu 214122, People's Republic of China
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22
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Qian J, Jiang L, Yang X, Yan Y, Mao H, Wang K. Highly sensitive impedimetric aptasensor based on covalent binding of gold nanoparticles on reduced graphene oxide with good dispersity and high density. Analyst 2015; 139:5587-93. [PMID: 25166740 DOI: 10.1039/c4an01116c] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
A series of gold nanoparticles (AuNPs) that were covalently bound to 2-aminothiophenol-functionalized reduced graphene oxide (Au-ATP-rGO) composites have been synthesized with well-dispersed and controllable surface coverage of AuNPs. Aptamer immobilization capacity studies demonstrated that the surface density of AuNPs played a key role in increasing the amount of anchoring aptamers to enhance the sensitivity of affinity based detection. With the composites possessing dense surface coverage of AuNPs as a versatile signal amplified platform, a label-free aptasensor for the sensitive and selective detection of small molecules (ochratoxin A in this case) has been developed using electrochemical impedance spectroscopy (EIS). A wide linear range of 0.1-200 ng mL(-1) was obtained with a low detection limit of 0.03 ng mL(-1) (S/N = 3). This work provides a universal strategy for the sensitive detection of a variety of targets in a truly label-free manner by means of changing the corresponding aptamer. The promising platform based on the combination of Au-ATP-rGO composites, EIS technique, and aptamers would have great potential applications in clinical diagnosis, environmental analysis, and food safety monitoring.
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Affiliation(s)
- Jing Qian
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, P. R. China.
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23
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Single-Stranded DNA Aptamers against Pathogens and Toxins: Identification and Biosensing Applications. BIOMED RESEARCH INTERNATIONAL 2015. [PMID: 26199940 PMCID: PMC4493287 DOI: 10.1155/2015/419318] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Molecular recognition elements (MREs) can be short sequences of single-stranded DNA, RNA, small peptides, or antibody fragments. They can bind to user-defined targets with high affinity and specificity. There has been an increasing interest in the identification and application of nucleic acid molecular recognition elements, commonly known as aptamers, since they were first described in 1990 by the Gold and Szostak laboratories. A large number of target specific nucleic acids MREs and their applications are currently in the literature. This review first describes the general methodologies used in identifying single-stranded DNA (ssDNA) aptamers. It then summarizes advancements in the identification and biosensing application of ssDNA aptamers specific for bacteria, viruses, their associated molecules, and selected chemical toxins. Lastly, an overview of the basic principles of ssDNA aptamer-based biosensors is discussed.
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24
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Ma W, Yin H, Xu L, Wu X, Kuang H, Wang L, Xu C. Ultrasensitive aptamer-based SERS detection of PSAs by heterogeneous satellite nanoassemblies. Chem Commun (Camb) 2015; 50:9737-40. [PMID: 25020000 DOI: 10.1039/c4cc03734k] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
An ultrasensitive method for surface enhanced Raman scattering (SERS) detection of prostate-specific antigens (PSAs) was established based on the aptamer directed core-satellite nanostructures. A limit of detection (LOD) of 4.8 aM for PSA was obtained.
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Affiliation(s)
- Wei Ma
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, JiangSu 214122, P. R. China.
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25
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Justino CI, Freitas AC, Pereira R, Duarte AC, Rocha Santos TA. Recent developments in recognition elements for chemical sensors and biosensors. Trends Analyt Chem 2015. [DOI: 10.1016/j.trac.2015.03.006] [Citation(s) in RCA: 115] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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26
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Lu L, Wang M, Liu LJ, Leung CH, Ma DL. Label-Free Luminescent Switch-On Probe for Ochratoxin A Detection Using a G-Quadruplex-Selective Iridium(III) Complex. ACS APPLIED MATERIALS & INTERFACES 2015; 7:8313-8318. [PMID: 25836665 DOI: 10.1021/acsami.5b01702] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A library of six luminescent Ir(III) complexes were synthesized and studied for their capacity to function as probes for G-quadruplex DNA. The novel Ir(III) complex 1 was discovered to be selective for G-quadruplex structures and was subsequently used for the construction of a label-free G-quadruplex-based ochratoxin A (OTA) sensing platform in aqueous solution. The assay exhibited linearity for OTA in the range of 0 to 60 nM (R2=0.9933), and the limit of detection for OTA was 5 nM. Furthermore, this assay was highly selective for OTA over its structurally related analogues.
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Affiliation(s)
- Lihua Lu
- †Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong, China
| | - Modi Wang
- †Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong, China
| | - Li-Juan Liu
- ‡State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - Chung-Hang Leung
- ‡State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - Dik-Lung Ma
- †Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong, China
- §Partner State Key Laboratory of Environmental and Biological Analysis, Hong Kong Baptist University, Hong Kong, China
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27
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Tang L, Li S, Han F, Liu L, Xu L, Ma W, Kuang H, Li A, Wang L, Xu C. SERS-active Au@Ag nanorod dimers for ultrasensitive dopamine detection. Biosens Bioelectron 2015; 71:7-12. [PMID: 25880832 DOI: 10.1016/j.bios.2015.04.013] [Citation(s) in RCA: 123] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Revised: 03/24/2015] [Accepted: 04/05/2015] [Indexed: 01/26/2023]
Abstract
Dopamine (DA) is a neurotransmitter which plays a key role in the life science. Self-assembled Au@Ag nanorod dimers based on aptamers were developed for ultrasensitive dopamine detection. The electronic field was significantly enhanced by the addition of silver shell coating on the surface of Au NR dimer. The results displayed that Au@Ag NR dimers were ideal building blocks for constructing the SERS substrates with prominent Raman enhancement effects. It was found that with using this Surface-enhanced Raman scattering (SERS)-encoded this sensing system, a limit of detection of 0.006 pM and a wide linear range of 0.01-10 pM for dopamine detection were obtained. Our work open up a new avenue for the diagnosis and drug-discovery programs.
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Affiliation(s)
- Lijuan Tang
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, JiangSu 214122, PR China
| | - Si Li
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, JiangSu 214122, PR China
| | - Fei Han
- Cereals & Oils Nutrition Research Group, Academy of Science & Technology of State Administration of Grain, Beijing 100037, PR China
| | - Liqiang Liu
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, JiangSu 214122, PR China
| | - Liguang Xu
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, JiangSu 214122, PR China
| | - Wei Ma
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, JiangSu 214122, PR China
| | - Hua Kuang
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, JiangSu 214122, PR China
| | - Aike Li
- Cereals & Oils Nutrition Research Group, Academy of Science & Technology of State Administration of Grain, Beijing 100037, PR China.
| | - Libing Wang
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, JiangSu 214122, PR China
| | - Chuanlai Xu
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, JiangSu 214122, PR China.
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28
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Sanzani SM, Reverberi M, Fanelli C, Ippolito A. Detection of ochratoxin A using molecular beacons and real-time PCR thermal cycler. Toxins (Basel) 2015; 7:812-20. [PMID: 25760080 PMCID: PMC4379526 DOI: 10.3390/toxins7030812] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Revised: 02/26/2015] [Accepted: 03/02/2015] [Indexed: 01/02/2023] Open
Abstract
We developed a simple and cheap assay for quantitatively detecting ochratoxin A (OTA) in wine. A DNA aptamer available in literature was used as recognition probe in its molecular beacon form, i.e., with a fluorescence-quenching pair at the stem ends. Our aptabeacon could adopt a conformation allowing OTA binding, causing a fluorescence rise due to the increased distance between fluorophore and quencher. We used real-time PCR equipment for capturing the signal. With this assay, under optimized conditions, the entire process can be completed within 1 h. In addition, the proposed system exhibited a good selectivity for OTA against other mycotoxins (ochratoxin B and aflatoxin M1) and limited interference from aflatoxin B1 and patulin. A wide linear detection range (0.2–2000 µM) was achieved, with LOD = 13 nM, r = 0.9952, and R2 = 0.9904. The aptabeacon was also applied to detect OTA in red wine spiked with the same dilution series. A linear correlation with a LOD = 19 nM, r = 0.9843, and R2 = 0.9708 was observed, with recoveries in the range 63%–105%. Intra- and inter-day assays confirmed its reproducibility. The proposed biosensor, although still being finalized, might significantly facilitate the quantitative detection of OTA in wine samples, thus improving their quality control from a food safety perspective.
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Affiliation(s)
- Simona Marianna Sanzani
- Department of Soil, Plant, and Food Sciences, University of Bari Aldo Moro, Via G. Amendola 165/A, 70126 Bari, Italy.
| | - Massimo Reverberi
- Department of Environmental Biology, Sapienza University of Rome, P.le A. Moro 5, 00185 Rome, Italy.
| | - Corrado Fanelli
- Department of Environmental Biology, Sapienza University of Rome, P.le A. Moro 5, 00185 Rome, Italy.
| | - Antonio Ippolito
- Department of Soil, Plant, and Food Sciences, University of Bari Aldo Moro, Via G. Amendola 165/A, 70126 Bari, Italy.
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29
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Wang C, Qian J, Wang K, Wang K, Liu Q, Dong X, Wang C, Huang X. Magnetic-fluorescent-targeting multifunctional aptasensorfor highly sensitive and one-step rapid detection of ochratoxin A. Biosens Bioelectron 2015; 68:783-790. [PMID: 25682508 DOI: 10.1016/j.bios.2015.02.008] [Citation(s) in RCA: 87] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2014] [Revised: 02/05/2015] [Accepted: 02/06/2015] [Indexed: 02/06/2023]
Abstract
A multifunctional aptasensor for highly sensitive and one-step rapid detection of ochratoxin A (OTA), has been developed using aptamer-conjugated magnetic beads (MBs) as the recognition and concentration element and a heavy CdTe quantum dots (QDs) as the label. Initially, the thiolated aptamer was conjugated on the Fe3O4@Au MBs through Au-S covalent binding. Subsequently, multiple CdTe QDs were loaded both in and on a versatile SiO2 nanocarrier to produce a large amplification factor of hybrid fluorescent nanoparticles (HFNPs) labeled complementary DNA (cDNA). The magnetic-fluorescent-targeting multifunctional aptasensor was thus fabricated by immobilizing the HFNPs onto MBs' surface through the hybrid reaction between the aptamer and cDNA. This aptasensor can be produced at large scale in a single run, and then can be conveniently used for rapid detection of OTA through a one-step incubation procedure. The presence of OTA would trigger aptamer-OTA binding, resulting in the partial release of the HFNPs into bulk solution. After a simple magnetic separation, the supernatant liquid of the above solution contained a great number of CdTe QDs produced an intense fluorescence emission. Under the optimal conditions, the fluorescence intensity of the released HFNPs was proportional to the concentration of OTA in a wide range of 15 pg mL(-1) -100 ng mL(-1) with a detection limit of 5.4 pg mL(-1) (S/N=3). This multifunctional aptasensor represents a promising path toward routine quality control of food safety, and also creates the opportunity to develop aptasensors for other targets using this strategy.
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Affiliation(s)
- Chengquan Wang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, PR China; Changzhou College of Information Technology, Changzhou 213164, PR China
| | - Jing Qian
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Kan Wang
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Kun Wang
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
| | - Qian Liu
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Xiaoya Dong
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Chengke Wang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Xingyi Huang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, PR China.
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30
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Building heterogeneous core-satellite chiral assemblies for ultrasensitive toxin detection. Biosens Bioelectron 2014; 66:554-8. [PMID: 25522083 DOI: 10.1016/j.bios.2014.12.021] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Revised: 12/04/2014] [Accepted: 12/08/2014] [Indexed: 12/20/2022]
Abstract
A chiral-aptasensor for ochratoxin A (OTA) detection based on Au core-Ag nanoparticle satellite assemblies was fabricated for the first time. High yields of Au core-Ag NP satellite assemblies were prepared in the aqueous phase and the optical properties of the Au core-Ag NP satellite assemblies were investigated in detail. Because of the different concentrations of the OTA target, the assembly degree of the architecture varied which led to the corresponding chiral signals. The developed method for OTA detection with excellent linear range from 1 to 50pg/mL showed high selectivity for OTA and the limit of detection as low as 0.16pg/mL. The feasibility of this method was demonstrated by performing recovery experiment using negative red wine samples, excellent recovery ranged from 90% to 105% was achieved, and indicated promising applications.
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31
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Li F, Zhang H, Wang Z, Newbigging AM, Reid MS, Li XF, Le XC. Aptamers facilitating amplified detection of biomolecules. Anal Chem 2014; 87:274-92. [PMID: 25313902 DOI: 10.1021/ac5037236] [Citation(s) in RCA: 151] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Feng Li
- Department of Laboratory Medicine and Pathology, ‡Department of Chemistry, University of Alberta , Edmonton, Alberta, Canada T6G 2G3
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32
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Wei Y, Zhang J, Wang X, Duan Y. Amplified fluorescent aptasensor through catalytic recycling for highly sensitive detection of ochratoxin A. Biosens Bioelectron 2014; 65:16-22. [PMID: 25461133 DOI: 10.1016/j.bios.2014.09.100] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Revised: 09/01/2014] [Accepted: 09/23/2014] [Indexed: 12/31/2022]
Abstract
This paper describes a novel approach utilizing nano-graphite-aptamer hybrid and DNase I for the amplified detection of ochratoxin A (OTA) for the first time. Nano-graphite can effectively quench the fluorescence of carboxyfluorescein (FAM) labeled OTA specific aptamer due to their strong π-π; stacking interactions; while upon OTA addition, it will bind with aptamer to fold into an OTA-aptamerG-quadruplex structure, which does not adsorb on the surface of nano-graphite and thus retains the dye fluorescence. Meanwhile, the G-quadruplex structure can be cleaved by DNase I, and in such case OTA is delivered from the complex. The released OTA then binds other FAM-labeled aptamers on the nano-graphite surface, and touches off another target recycling, resulting in the successive release of dye-labeled aptamers from the nano-graphite, which leads to significant amplification of the signal. Under the optimized conditions, the present amplified sensing system exhibits high sensitivity toward OTA with a limit of detection of 20nM (practical measurement), which is about 100-fold higher than that of traditional unamplified homogeneous assay. Our developed method also showed high selectivity against other interference molecules and can be applied for the detection of OTA in real red wine samples. The proposed assay is simple, cost-effective, and might open a door for the development of new assays for other biomolecules. This aptasensor is of great practical importance in food safety and could be widely extended to the detection of other toxins by replacing the sequence of the recognition aptamer.
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Affiliation(s)
- Yin Wei
- Research Center of Analytical Instrumentation, Analytical & Testing Center, Sichuan University, Chengdu, China
| | - Ji Zhang
- Research Center of Analytical Instrumentation, Analytical & Testing Center, Sichuan University, Chengdu, China
| | - Xu Wang
- Research Center of Analytical Instrumentation, Analytical & Testing Center, Sichuan University, Chengdu, China
| | - Yixiang Duan
- Research Center of Analytical Instrumentation, College of Life Science, Sichuan University, Chengdu, China.
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33
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Ghosh H, RoyChaudhuri C. Noise spectroscopy as an efficient tool for impedance based sub-femtomolar toxin detection in complex mixture using nanoporous silicon oxide. Biosens Bioelectron 2014; 67:757-62. [PMID: 25442424 DOI: 10.1016/j.bios.2014.09.035] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2014] [Revised: 08/29/2014] [Accepted: 09/04/2014] [Indexed: 01/07/2023]
Abstract
In this paper we demonstrate an efficient and non-interfering computational method for sub-femtomolar food toxin detection in complex mixture based on nanoporous silicon oxide impedance immunosensor by employing noise spectroscopy analysis at the peak frequency. It has been observed that the peak frequency (fp) values obtained from steady state impedance measurements cannot distinguish between solution with only the specific toxin, which is aflatoxin B1 (AfB1) and mixture of AfB1 with other non-specific toxins (NSTs), thus leading to erroneous quantification of AfB1 in complex mixture. On the other hand, the first cut-off frequency (fc) ranges obtained from noise spectroscopy analysis can qualitatively differentiate between solution containing only AfB1, AfB1 and NSTs and no AfB1. However fc values being very close for different concentration of AfB1 in pure solution and being overlapping for different mixtures cannot quantify AfB1 either in pure solution or in complex mixture. To address this problem, the proposed computational method first clusters the fp and fc values in 11 categories each using k-means clustering algorithm and then applies a simple combinational digital logic on the clusters of fps and fcs to obtain the final output, realizable with standard NAND-NOR gates. The output digital word differs only with AfB1 concentration and not with concentration of NSTs and is found to be capable of detecting sub-femtomolar AfB1 range down to 0.1 fg/ml not only in pure solution but also in complex mixture with as high as 1000 ng/ml NSTs. This is the most sensitive and selective report so far on electrochemical food toxin immunosensors.
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Affiliation(s)
- H Ghosh
- Department of Electronics and Telecommunication Engineering, Indian Institute of Engineering, Science and Technology, Shibpur, Howrah 711103, West Bengal, India.
| | - C RoyChaudhuri
- Department of Electronics and Telecommunication Engineering, Indian Institute of Engineering, Science and Technology, Shibpur, Howrah 711103, West Bengal, India.
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34
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Evtugyn G, Porfireva A, Stepanova V, Sitdikov R, Stoikov I, Nikolelis D, Hianik T. Electrochemical Aptasensor Based on Polycarboxylic Macrocycle Modified with Neutral Red for Aflatoxin B1 Detection. ELECTROANAL 2014. [DOI: 10.1002/elan.201400328] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Liu L, Xing C, Yan H, Kuang H, Xu C. Development of an ELISA and immunochromatographic strip for highly sensitive detection of microcystin-LR. SENSORS (BASEL, SWITZERLAND) 2014; 14:14672-85. [PMID: 25120158 PMCID: PMC4179011 DOI: 10.3390/s140814672] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2014] [Revised: 08/03/2014] [Accepted: 08/06/2014] [Indexed: 01/16/2023]
Abstract
A monoclonal antibody for microcystin-leucine-arginine (MC-LR) was produced by cell fusion. The immunogen was synthesized in two steps. First, ovalbumin/ bovine serum albumin was conjugated with 6-acetylthiohexanoic acid using a carbodiimide EDC (1-ethyl-3-[3-dimethylaminopropyl]carbodiimide hydrochloride)/ NHS (N-hydroxysulfosuccinimide) reaction. After dialysis, the protein was reacted with MC-LR based on a free radical reaction under basic solution conditions. The protein conjugate was used for immunization based on low volume. The antibodies were identified by indirect competitive (ic)ELISA and were subjected to tap water and lake water analysis. The concentration causing 50% inhibition of binding of MC-LR (IC50) by the competitive indirect ELISA was 0.27 ng/mL. Cross-reactivity to the MC-RR, MC-YR and MC-WR was good. The tap water and lake water matrices had no effect on the detection limit. The analytical recovery of MC-LR in the water samples in the icELISA was 94%-110%. Based on this antibody, an immunochromatographic biosensor was developed with a cut-off value of 1 ng/mL, which could satisfy the requirement of the World Health Organization for MC-LR detection in drinking water. This biosensor could be therefore be used as a fast screening tool in the field detection of MC-LR.
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Affiliation(s)
- Liqiang Liu
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, JiangSu 214122, China.
| | - Changrui Xing
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, JiangSu 214122, China.
| | - Huijuan Yan
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, JiangSu 214122, China.
| | - Hua Kuang
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, JiangSu 214122, China.
| | - Chuanlai Xu
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, JiangSu 214122, China.
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Chen J, Zhang X, Cai S, Wu D, Chen M, Wang S, Zhang J. A fluorescent aptasensor based on DNA-scaffolded silver-nanocluster for ochratoxin A detection. Biosens Bioelectron 2014; 57:226-31. [PMID: 24590125 DOI: 10.1016/j.bios.2014.02.001] [Citation(s) in RCA: 103] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2013] [Revised: 02/02/2014] [Accepted: 02/05/2014] [Indexed: 02/06/2023]
Abstract
The selective detection of ultratrace amounts of ochratoxin A (OTA) is extremely important for food safety since it is one of the most toxic and widespread mycotoxin. Here we develop a signal-on fluorescent biosensor for detection of OTA based on fluorescent DNA-scaffolded silver-nanocluster (AgNCs), structure-switching of anti-OTA aptamer (Ap) and magnetic beads (MBs), and demonstrate its feasibility in the application of detecting OTA in real samples of wheat. The method exhibits superior sensitivity with a detection limit as low as 2 pg/mL OTA with high specificity. To the best of our knowledge, this is the first attempt to detect OTA based on DNA-scaffolded AgNCs, which possesses relatively high fluorescence quantum yield and photostability with regard to traditional organic dyes and quantum dots. Moreover, combined with the merits of MBs and aptamer, the proposed sensor has many advantages such as fabrication easiness, operation convenience, low cost, and being fast and portable, which may represent a promising path toward routine OTA control.
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Affiliation(s)
- Jinghua Chen
- Department of Pharmaceutical Analysis, Faculty of Pharmacy, Fujian Medical University, Fuzhou 350108, Fujian, China
| | - Xi Zhang
- Department of Pharmaceutical Analysis, Faculty of Pharmacy, Fujian Medical University, Fuzhou 350108, Fujian, China
| | - Shuxian Cai
- Department of Pharmaceutical Analysis, Faculty of Pharmacy, Fujian Medical University, Fuzhou 350108, Fujian, China
| | - Dongzhi Wu
- Department of Pharmaceutical Analysis, Faculty of Pharmacy, Fujian Medical University, Fuzhou 350108, Fujian, China
| | - Mei Chen
- Department of Pharmaceutical Analysis, Faculty of Pharmacy, Fujian Medical University, Fuzhou 350108, Fujian, China
| | - Shihua Wang
- The Ministry of Education Key Laboratory of Biopesticide and Chemical Biology, and College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China.
| | - Jing Zhang
- The Ministry of Education Key Laboratory of Biopesticide and Chemical Biology, and College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China.
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Guo X, Wen F, Zheng N, Luo Q, Wang H, Wang H, Li S, Wang J. Development of an ultrasensitive aptasensor for the detection of aflatoxin B1. Biosens Bioelectron 2014; 56:340-4. [PMID: 24549114 DOI: 10.1016/j.bios.2014.01.045] [Citation(s) in RCA: 110] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Revised: 01/10/2014] [Accepted: 01/24/2014] [Indexed: 01/11/2023]
Abstract
Contamination of feed and food by aflatoxin B1 (AFB1), one of the most toxic of the mycotoxins, is a global concern. To prevent food safety scares, and avoid subsequent economic losses due to the recall of contaminated items, methods for the rapid, sensitive and specific detection of AFB1 at trace levels are much in demand. In this work, a simple, ultrasensitive, and reliable aptasensor is described for the detection of AFB1. An AFB1 aptamer was used as a molecular recognition probe, while its complementary DNA played a role as a signal generator for amplification by real-time quantitative polymerase chain reaction (PCR). Under optimal conditions, a wide linear detection range (5.0 × 10(-5) to 5.0 ng mL(-1)) was achieved, with a high sensitivity (limit of detection (LOD)=25 fg mL(-1)). In addition, the proposed aptasensor exhibited excellent specificity for AFB1 compared with eight other mycotoxins, with no obvious Ct value change. This aptasensor can also be used in quantifying AFB1 levels in Chinese wild rye hay samples and infant rice cereal samples, demonstrating satisfactory recoveries in the range of 88-127% and 94-119%, respectively. This detection technique has a significant potential for high-throughput, quantitative determination of mycotoxin levels in a large range of feeds and foods.
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Affiliation(s)
- Xiaodong Guo
- Ministry of Agriculture Laboratory of Quality & Safety Risk Assessment for Dairy Products (Beijing), Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, PR China; College of Animal Science and Technology, Xinjiang Agricultural University, Urumchi 830000, PR China; Ministry of Agriculture-Milk and Dairy Product Inspection Center (Beijing), Beijing 100193, PR China
| | - Fang Wen
- Ministry of Agriculture Laboratory of Quality & Safety Risk Assessment for Dairy Products (Beijing), Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, PR China; Ministry of Agriculture-Milk and Dairy Product Inspection Center (Beijing), Beijing 100193, PR China
| | - Nan Zheng
- Ministry of Agriculture Laboratory of Quality & Safety Risk Assessment for Dairy Products (Beijing), Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, PR China; Ministry of Agriculture-Milk and Dairy Product Inspection Center (Beijing), Beijing 100193, PR China; State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, PR China.
| | - Qiujiang Luo
- College of Animal Science and Technology, Xinjiang Agricultural University, Urumchi 830000, PR China
| | - Haiwei Wang
- Ministry of Agriculture Laboratory of Quality & Safety Risk Assessment for Dairy Products (Beijing), Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, PR China; Ministry of Agriculture-Milk and Dairy Product Inspection Center (Beijing), Beijing 100193, PR China
| | - Hui Wang
- Ministry of Agriculture Laboratory of Quality & Safety Risk Assessment for Dairy Products (Beijing), Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, PR China; Ministry of Agriculture-Milk and Dairy Product Inspection Center (Beijing), Beijing 100193, PR China
| | - Songli Li
- Ministry of Agriculture Laboratory of Quality & Safety Risk Assessment for Dairy Products (Beijing), Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, PR China; Ministry of Agriculture-Milk and Dairy Product Inspection Center (Beijing), Beijing 100193, PR China
| | - Jiaqi Wang
- Ministry of Agriculture Laboratory of Quality & Safety Risk Assessment for Dairy Products (Beijing), Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, PR China; Ministry of Agriculture-Milk and Dairy Product Inspection Center (Beijing), Beijing 100193, PR China; State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, PR China
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Prieto-Simón B, Samitier J. "Signal off" aptasensor based on enzyme inhibition induced by conformational switch. Anal Chem 2014; 86:1437-44. [PMID: 24377312 DOI: 10.1021/ac402258x] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A novel sensing strategy for electrochemical aptamer-based sensors is presented. Nucleic acid aptamers are considered alternatives to antibodies. However, some of their intrinsic properties, such as that they can undergo conformational changes during the binding of the target, can be used to design novel sensing strategies. Unlike other electrochemical "signal off" aptamer-based sensors, we report a strategy based on enzymatic inhibition. Our approach shows the feasibility to detect small molecules based on the aptamer conformational change induced by the target that leads to the inhibition of the enzyme used as a label. Additionally, we prove the ability to regenerate the function of the aptasensor by simply applying a short potential pulse. As a proof-of-concept, the widely used aptamer for ochratoxin A (OTA) has been selected as a model. After self-assembling short oligonucleotides onto a gold electrode, complementary to the 3' end of the aptamer, hybridization of the aptamer takes place. To investigate the mechanism induced by the OTA-binding, surface plasmon resonance assays were performed, which confirmed the conformational switch of the aptamer rather than the aptamer displacement by dehybridization from the DNA-modified sensor surface. The electrochemical sensor can successfully detect OTA in wine at the limits stipulated by the European Commission. Given its sensitivity, rapid and easy detection, and regeneration, it can be envisaged as screening tool for OTA detection. Moreover, this sensing strategy has the potential to be applied to other aptamer-based biochemical assays for the detection of small molecules in the fields of food safety, environmental monitoring, and medical diagnostics.
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Affiliation(s)
- Beatriz Prieto-Simón
- Nanobioengineering Group, Institute for Bioengineering of Catalonia (IBEC) , Baldiri Reixac 10-12 08028 Barcelona, Spain
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Berthiller F, Burdaspal P, Crews C, Iha M, Krska R, Lattanzio V, MacDonald S, Malone R, Maragos C, Solfrizzo M, Stroka J, Whitaker T. Developments in mycotoxin analysis: an update for 2012-2013. WORLD MYCOTOXIN J 2014. [DOI: 10.3920/wmj2013.1637] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
This review highlights developments in mycotoxin analysis and sampling over a period between mid-2012 and mid-2013. It covers the major mycotoxins: aflatoxins, Alternaria toxins, ergot alkaloids, fumonisins, ochratoxins, patulin, trichothecenes and zearalenone. A wide range of analytical methods for mycotoxin determination in food and feed were developed last year, in particular immunochemical methods and liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS)-based methods. After a section on sampling and sample preparation, due to the rapid spread and developments in the field of LC-MS/MS multimycotoxin methods, a separate section has been devoted to this area of research. It is followed by a section on mycotoxins in botanicals and spices, before continuing with the format of previous reviews in this series with dedicated sections on method developments for the individual mycotoxins.
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Affiliation(s)
- F. Berthiller
- University of Natural Resources and Life Sciences, Vienna
- Department for Agrobiotechnology (IFA-Tulln), Christian Doppler Laboratory for Mycotoxin Metabolism and Center for Analytical Chemistry, Konrad Lorenz Str. 20, 3430 Tulln, Austria
| | - P.A. Burdaspal
- National Centre for Food, Spanish Food Safety and Nutrition Agency, Carretera de Majadahonda a Pozuelo km 5, 228220 Majadahonda, Spain
| | - C. Crews
- The Food and Environment Research Agency, Sand Hutton, York YO41 1LZ, United Kingdom
| | - M.H. Iha
- Instituto Adolfo Lutz, Laboratrio I de Ribeiro Preto, Av Dr Arnaldo 355, CEP 14085-410, Ribeiro Preto SP, Brazil
| | - R. Krska
- University of Natural Resources and Life Sciences, Vienna
- Department for Agrobiotechnology (IFA-Tulln), Christian Doppler Laboratory for Mycotoxin Metabolism and Center for Analytical Chemistry, Konrad Lorenz Str. 20, 3430 Tulln, Austria
| | - V.M.T. Lattanzio
- Institute of Sciences of Food Production, National Research Council, Via Amendola 122/o, Bari 700126, Italy
| | - S. MacDonald
- The Food and Environment Research Agency, Sand Hutton, York YO41 1LZ, United Kingdom
| | - R.J. Malone
- Trilogy Analytical Laboratory, 870 Vossbrink Drive, Washington, MO 63090, USA
| | - C. Maragos
- USDA, ARS National Center for Agricultural Utilization Research, 1815 N. University St., Peoria, IL 61604, USA
| | - M. Solfrizzo
- Institute of Sciences of Food Production, National Research Council, Via Amendola 122/o, Bari 700126, Italy
| | - J. Stroka
- Institute for Reference Materials and Measurements (IRMM), European Commission Joint Research Centre, Retieseweg 111, 2440 Geel, Belgium
| | - T.B. Whitaker
- Biological and Agricultural Engineering Department, N.C. State University, P.O. Box 7625, Raleigh, NC 27695-7625, USA
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Yang X, Qian J, Jiang L, Yan Y, Wang K, Liu Q, Wang K. Ultrasensitive electrochemical aptasensor for ochratoxin A based on two-level cascaded signal amplification strategy. Bioelectrochemistry 2013; 96:7-13. [PMID: 24355136 DOI: 10.1016/j.bioelechem.2013.11.006] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2013] [Revised: 11/21/2013] [Accepted: 11/24/2013] [Indexed: 01/21/2023]
Abstract
Ochratoxin A (OTA) has a number of toxic effects to both humans and animals, so developing sensitive detection method is of great importance. Herein, we describe an ultrasensitive electrochemical aptasensor for OTA based on the two-level cascaded signal amplification strategy with methylene blue (MB) as a redox indicator. In this method, capture DNA, aptamers, and reporter DNA functionalized-gold nanoparticles (GNPs) were immobilized on the electrode accordingly, where GNPs were used as the first-level signal enhancer. To receive the more sensitive response, a larger number of guanine (G)-rich DNA was bound to the GNPs' surface to provide abundant anchoring sites for MB to achieve the second-level signal amplification. By employing this novel strategy, an ~8.5 (±0.3) fold amplification in signal intensity was obtained. Afterward, OTA was added to force partial GNPs/G-rich DNA to release from the sensing interface and thus decreased the electrochemical response. An effective sensing range from 2.5pM to 2.5nM was received with an extremely low detection limit of 0.75 (±0.12) pM. This amplification strategy has the potential to be the main technology for aptamer-based electrochemical biosensor in a variety of fields.
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Affiliation(s)
- Xingwang Yang
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, P.R. China
| | - Jing Qian
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, P.R. China
| | - Ling Jiang
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, P.R. China
| | - Yuting Yan
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, P.R. China
| | - Kan Wang
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, P.R. China
| | - Qian Liu
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, P.R. China
| | - Kun Wang
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, P.R. China.
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Amaya-González S, de-los-Santos-Álvarez N, Miranda-Ordieres AJ, Lobo-Castañón MJ. Aptamer-based analysis: a promising alternative for food safety control. SENSORS (BASEL, SWITZERLAND) 2013; 13:16292-311. [PMID: 24287543 PMCID: PMC3892839 DOI: 10.3390/s131216292] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Revised: 11/20/2013] [Accepted: 11/21/2013] [Indexed: 02/07/2023]
Abstract
Ensuring food safety is nowadays a top priority of authorities and professional players in the food supply chain. One of the key challenges to determine the safety of food and guarantee a high level of consumer protection is the availability of fast, sensitive and reliable analytical methods to identify specific hazards associated to food before they become a health problem. The limitations of existing methods have encouraged the development of new technologies, among them biosensors. Success in biosensor design depends largely on the development of novel receptors with enhanced affinity to the target, while being stable and economical. Aptamers fulfill these characteristics, and thus have surfaced as promising alternatives to natural receptors. This Review describes analytical strategies developed so far using aptamers for the control of pathogens, allergens, adulterants, toxins and other forbidden contaminants to ensure food safety. The main progresses to date are presented, highlighting potential prospects for the future.
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Affiliation(s)
- Sonia Amaya-González
- Departamento de Química-Física y Analítica, Universidad de Oviedo, Julián Clavería, 8, Oviedo 33006, Spain; E-Mails: (S.A.-G.); (N.S.-Á.); (A.J.M.-O.)
| | - Noemí de-los-Santos-Álvarez
- Departamento de Química-Física y Analítica, Universidad de Oviedo, Julián Clavería, 8, Oviedo 33006, Spain; E-Mails: (S.A.-G.); (N.S.-Á.); (A.J.M.-O.)
| | - Arturo J. Miranda-Ordieres
- Departamento de Química-Física y Analítica, Universidad de Oviedo, Julián Clavería, 8, Oviedo 33006, Spain; E-Mails: (S.A.-G.); (N.S.-Á.); (A.J.M.-O.)
| | - Maria Jesús Lobo-Castañón
- Departamento de Química-Física y Analítica, Universidad de Oviedo, Julián Clavería, 8, Oviedo 33006, Spain; E-Mails: (S.A.-G.); (N.S.-Á.); (A.J.M.-O.)
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Kuang H, Ma W, Xu L, Wang L, Xu C. Nanoscale superstructures assembled by polymerase chain reaction (PCR): programmable construction, structural diversity, and emerging applications. Acc Chem Res 2013; 46:2341-54. [PMID: 23742672 DOI: 10.1021/ar300206m] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Polymerase chain reaction (PCR) is an essential tool in biotechnology laboratories and is becoming increasingly important in other areas of research. Extensive data obtained over the last 12 years has shown that the combination of PCR with nanoscale dispersions can resolve issues in the preparation DNA-based materials that include both inorganic and organic nanoscale components. Unlike conventional DNA hybridization and antibody-antigen complexes, PCR provides a new, effective assembly platform that both increases the yield of DNA-based nanomaterials and allows researchers to program and control assembly with predesigned parameters including those assisted and automated by computers. As a result, this method allows researchers to optimize to the combinatorial selection of the DNA strands for their nanoparticle conjugates. We have developed a PCR approach for producing various nanoscale assemblies including organic motifs such as small molecules, macromolecules, and inorganic building blocks, such as nanorods (NRs), metal, semiconductor, and magnetic nanoparticles (NPs). We start with a nanoscale primer and then modify that building block using the automated steps of PCR-based assembly including initialization, denaturation, annealing, extension, final elongation, and final hold. The intermediate steps of denaturation, annealing, and extension are cyclic, and we use computer control so that the assembled superstructures reach their predetermined complexity. The structures assembled using a small number of PCR cycles show a lower polydispersity than similar discrete structures obtained by direct hybridization between the nanoscale building blocks. Using different building blocks, we assembled the following structural motifs by PCR: (1) discrete nanostructures (NP dimers, NP multimers including trimers, pyramids, tetramers or hexamers, etc.), (2) branched NP superstructures and heterochains, (3) NP satellite-like superstructures, (4) Y-shaped nanostructures and DNA networks, (5) protein-DNA co-assembly structures, and (6) DNA block copolymers including trimers and pentamers. These results affirm that this method can produce a variety of chemical structures and in yields that are tunable. Using PCR-based preparation of DNA-bridged nanostructures, we can program the assembly of the nanoscale blocks through the adjustment of the primer intensity on the assembled units, the number of PCR cycles, or both. The resulting structures are highly complex and diverse and have interesting dynamics and collective properties. Potential applications of these materials include chirooptical materials, probe fabrication, and environmental and biomedical sensors.
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Affiliation(s)
- Hua Kuang
- State Key Lab of Food Science & Technology, School of Food Science & Technology, Jiangnan University, Wuxi 214122, China
| | - Wei Ma
- State Key Lab of Food Science & Technology, School of Food Science & Technology, Jiangnan University, Wuxi 214122, China
| | - Liguang Xu
- State Key Lab of Food Science & Technology, School of Food Science & Technology, Jiangnan University, Wuxi 214122, China
| | - Libing Wang
- State Key Lab of Food Science & Technology, School of Food Science & Technology, Jiangnan University, Wuxi 214122, China
| | - Chuanlai Xu
- State Key Lab of Food Science & Technology, School of Food Science & Technology, Jiangnan University, Wuxi 214122, China
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Jiang L, Qian J, Yang X, Yan Y, Liu Q, Wang K, Wang K. Amplified impedimetric aptasensor based on gold nanoparticles covalently bound graphene sheet for the picomolar detection of ochratoxin A. Anal Chim Acta 2013; 806:128-35. [PMID: 24331048 DOI: 10.1016/j.aca.2013.11.003] [Citation(s) in RCA: 106] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2013] [Revised: 10/30/2013] [Accepted: 11/02/2013] [Indexed: 11/25/2022]
Abstract
An amplified electrochemical impedimetric aptasensor for ochratoxin A (OTA) was developed with picomolar sensitivity. A facile route to fabricate gold nanoparticles covalently bound reduced graphene oxide (AuNPs-rGO) resulted in a large number of well-dispersed AuNPs on graphene sheets with tremendous binding sites for DNA, since the single rGO sheet and each AuNP can be loaded with hundreds of DNA strands. An aptasensor with sandwich model was fabricated which involved thiolated capture DNA immobilized on a gold electrode to capture the aptamer, then the sensing interface was incubated with OTA at a desired concentration, followed by AuNPs-rGO functionalized reporter DNA hybridized with the residual aptamers. By exploiting the AuNPs-rGO as an excellent signal amplified platform, a single hybridization event between aptamer and reporter DNA was translated into more than 10(7) redox events, leading to a substantial increase in charge-transfer resistance (Rct) by 7~ orders of magnitude compared with that of the free aptamer modified electrode. Such designed aptasensor showed a decreased response of Rct to the increase of OTA concentrations over a wide range of 1 pg mL(-1)-50 ng mL(-1) and could detect extremely low OTA concentration, namely, 0.3 pg mL(-1) or 0.74 pM, which was much lower than that of most other existed impedimetric aptasensors. The signal amplification platform presented here would provide a promising model for the aptamer-based detection with a direct impedimetric method.
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Affiliation(s)
- Ling Jiang
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, PR China
| | - Jing Qian
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, PR China
| | - Xingwang Yang
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, PR China
| | - Yuting Yan
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, PR China
| | - Qian Liu
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, PR China
| | - Kan Wang
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, PR China
| | - Kun Wang
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, PR China.
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Rhouati A, Yang C, Hayat A, Marty JL. Aptamers: a promosing tool for ochratoxin A detection in food analysis. Toxins (Basel) 2013; 5:1988-2008. [PMID: 24196457 PMCID: PMC3847711 DOI: 10.3390/toxins5111988] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2013] [Revised: 10/24/2013] [Accepted: 10/28/2013] [Indexed: 12/22/2022] Open
Abstract
The contamination of food and feed by mycotoxins has become an increasingly serious problem. Mycotoxins represent a major risk to human and animal health, as well as economics. Herein, we focus on Ochratoxin A (OTA), which is one of the most common mycotoxins contaminating feed and foodstuffs. OTA is a secondary metabolite produced by various Aspergillus and Penicillium strains. Upon ingestion, OTA has a number of acute and chronic toxic effects. It is nephrotoxic, teratogenic, immunosuppressive, and carcinogenic (group 2B). As a consequence, some regulatory limits have been introduced on the levels of OTA in several commodities. The toxic nature of OTA demands highly sensitive and selective monitoring techniques to protect human and animal health. As alternative to traditional analytical techniques, biochemical methods for OTA analysis have attained great interest in the last few decades. They are mainly based on the integration of antibodies or aptamers as biorecognition elements in sensing platforms. However, aptamers have gained more attention in affinity-based assays because of their high affinity, specificity, stability, and their easy chemical synthesis. In this brief review, we present an overview of aptamer-based assays and their applications in OTA purification and detection, appeared in the literature in the last five years.
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Affiliation(s)
- Amina Rhouati
- IMAGES, Université de Perpignan, 52 Avenue Paul Alduy, Perpignan Cedex 66860, France; E-Mails: (A.R.); (C.Y.)
| | - Cheng Yang
- IMAGES, Université de Perpignan, 52 Avenue Paul Alduy, Perpignan Cedex 66860, France; E-Mails: (A.R.); (C.Y.)
| | - Akhtar Hayat
- Department of Chemistry and Biomolecular science, Clarkson University, Potsdam, NY 13699, USA; E-Mail:
| | - Jean-Louis Marty
- IMAGES, Université de Perpignan, 52 Avenue Paul Alduy, Perpignan Cedex 66860, France; E-Mails: (A.R.); (C.Y.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +33-468662254; Fax: +33-468662223
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