1
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Fan L, Zhang Q, Wang F, Yang H. Dummy molecularly imprinted solid-phase extraction-SERS determination of AFB1 in peanut. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 288:122130. [PMID: 36459720 DOI: 10.1016/j.saa.2022.122130] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Revised: 10/24/2022] [Accepted: 11/14/2022] [Indexed: 06/17/2023]
Abstract
As a class I carcinogen, aflatoxin B1 (AFB1) contamination in foods and feeds accounts for 75 % of the total mycotoxin contamination. In this work, a simple and reliable surface-enhanced Raman spectroscopy (SERS) method for sensitive and selective detection of AFB1 in peanut samples integrated with dummy molecularly imprinted polymers (DMIPs) is developed. N-isopropylacrylamide (NIPAM) and 7-ethoxycoumarin (7-EOC) are chosen as monomer and dummy template, respectively and their ratio was screened through molecular design in both of kinetic and static adsorption views to form the optimal DMIPs. As-prepared dummy molecularly imprinted solid-phase extraction (DMISPE) could selectively enrich AFB1 from peanut samples. Finally, a liquid-liquid interface self-assembly constructed thioctic acid-decorated AgNPs monolayer film (TA-AgNPs MF) as a SERS-active substrate is employed to determine the amount of AFB1 eluted from DMISPE. SERS assay shows high detection sensitivity for AFB1 in peanut samples with limit of detection of 0.1 μg L-1 and a linear concentration relationship range from 0.1 to 10 μg L-1.
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Affiliation(s)
- Li Fan
- The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Municipal Education Committee Key Laboratory of Molecular Imaging Probes and Sensors, and Department of Chemistry, Shanghai Normal University, Shanghai 200234, PR China
| | - Qiong Zhang
- The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Municipal Education Committee Key Laboratory of Molecular Imaging Probes and Sensors, and Department of Chemistry, Shanghai Normal University, Shanghai 200234, PR China
| | - Feng Wang
- The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Municipal Education Committee Key Laboratory of Molecular Imaging Probes and Sensors, and Department of Chemistry, Shanghai Normal University, Shanghai 200234, PR China.
| | - Haifeng Yang
- The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Municipal Education Committee Key Laboratory of Molecular Imaging Probes and Sensors, and Department of Chemistry, Shanghai Normal University, Shanghai 200234, PR China.
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2
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Dai S, Li W, Xu R, Wang X, Li Q, Dou M, Li J. Label-Free Fluorescence Quantitative Detection Platform on Plasmonic Silica Photonic Crystal Microsphere Array. Anal Chem 2022; 94:17939-17946. [PMID: 36519631 DOI: 10.1021/acs.analchem.2c04000] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
We have demonstrated the proof-of-concept of a label-free fluorescence quantitative detection platform based on gold nanoparticle (AuNP) enhancement intrinsic fluorescence of protein on the silica photonic crystal microsphere (SPCM) array. The label-free one-step competitive fluorescence immunoassay protocol has been proposed on the surface of the SPCM. Aflatoxin B1 (AFB1) as a model molecule was detected by the newly established method. AFB1-bovine serum albumin and monoclonal antibodies (Abs) of anti-AFB1 have been immobilized on the surfaces of SPCMs and AuNPs, respectively. AuNPs remarkably enhanced the intrinsic fluorescence of artificial antigens on the surface of the SPCM at near UV excitation. The simulation of electric field distribution showed that the maximum value of the near-field enhancement |E/E0| of the SPCM with AuNPs could reach 20. The label-free fluorescence enhancement effect comes from the synergistic effects of photonic crystal effect and AuNP plasmon effect. Such a label-free fluorescence detection method can provide a linear detection range from 0.1 to 10 ng/mL with a limit of detection of 0.025 ng/mL and good specificity for AFB1. The recovery rates in the spiked cereal samples were measured in the range of 84.07 ± 5.71%-101.02 ± 5.13%, which were consistent with that of the traditional enzyme linked immunosorbent assay method. The label-free detection platform displays great application potential in biology, medicine, agriculture, food industry, chemical industry, energy source, and environmental protection.
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Affiliation(s)
- Shijie Dai
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing210023, China
| | - Wei Li
- Medical Imaging Center, the First Affiliated Hospital, Jinan University, Guangzhou, Guangdong510627China
| | - Ruimin Xu
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing210023, China
| | - Xin Wang
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing210023, China
| | - Qianjin Li
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing210023, China
| | - Menghua Dou
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing210023, China
| | - Jianlin Li
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing210023, China
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3
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A fluorescence immunosensor for ochratoxin A based on resonance energy transfer between fluorescein derivative and gold nanoparticles. J Food Compost Anal 2022. [DOI: 10.1016/j.jfca.2022.104806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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4
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An ultrasensitive, homogeneous fluorescence quenching immunoassay integrating separation and detection of aflatoxin M 1 based on magnetic graphene composites. Mikrochim Acta 2021; 188:59. [PMID: 33507410 DOI: 10.1007/s00604-021-04715-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 01/17/2021] [Indexed: 01/24/2023]
Abstract
A homogeneous fluorescence quenching immunoassay is described for simultaneous separation and detection of aflatoxin M1 (AFM1) in milk. The novel assay relies on monoclonal antibody (mAb) functionalized Fe3O4 decorated reduced-graphene oxide (rGO-Fe3O4-mAb) as both capture probe and energy acceptor, combined with tetramethylrhodamine cadaverine-labeled aflatoxin B1 (AFB1-TRCA) as the energy donor. In the assay, AFB1-TRCA binds to rGO-Fe3O4-mAb in the absence of AFM1, quenching the fluorescence of TRCA by resonance energy transfer. Significantly, the immunoassay integrates sample preparation and detection into a single step, by using magnetic graphene composites to avoid washing and centrifugation steps, and the assay can be completed within 10 min. Under optimized conditions, the visual and quantitative detection limits of the assay for AFM1 were 50 and 3.8 ng L-1, respectively, which were significantly lower than those obtained by fluorescence polarization immunoassay using the same immunoreagents. Owing to its operation and highly sensitivity, the proposed assay provides a powerful tool for the detection of AFM1.
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5
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Antibody engineering-driven controllable chemiluminescence resonance energy transfer for immunoassay with tunable dynamic range. Anal Chim Acta 2021; 1152:338231. [PMID: 33648650 DOI: 10.1016/j.aca.2021.338231] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 12/10/2020] [Accepted: 01/15/2021] [Indexed: 11/22/2022]
Abstract
The donor-acceptor distance is a critical factor for the occurrence of chemiluminescent resonance energy transfer (CRET). We herein evaluate the donor-acceptor distance and transfer efficiency of CRET immunoassays of a series of donors which contain different sized antibody fragments, intact monoclonal antibody (IgG), antigen binding fragment (Fab), and single chain fragment antibody (scFv). Core/multishell quantum dots were used as the acceptor in three CRET systems. IgG is the maximum antibody fragment, leading to the longest donor-acceptor distance and the lowest transfer efficiency. Donors with Fab and scFv show significantly decreased distance and increased transfer efficiency. These results suggest an inverse correlation between donor size and transfer efficiency and can be used to provide guidance for the construction of controllable CRET. By combining the controllable CRET with immunoassay, we further develop a tunable sulfamethazine analytical system. Three different sized donors based CRET immunoassay show a markedly different sensitivity and dynamic range. Such adjustable detection provides greater flexibility for contaminant detection in different foodstuffs with different residue limits. This work not only illustrates the effect of donor-acceptor distance on regulating the energy transfer efficiency of CRET system, but also provides a guideline for the construction of a tunable immunoassay.
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6
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Wang Y, Xu J, Qiu Y, Li P, Liu B, Yang L, Barnych B, Hammock BD, Zhang C. Highly Specific Monoclonal Antibody and Sensitive Quantum Dot Beads-Based Fluorescence Immunochromatographic Test Strip for Tebuconazole Assay in Agricultural Products. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:9096-9103. [PMID: 31356079 PMCID: PMC7069222 DOI: 10.1021/acs.jafc.9b02832] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A monoclonal antibody (mAb) was raised against tebuconazole (TEB) using a hapten where the p-chloro substituent of the TEB molecule was replaced with a long-chain carboxylic acid. The resulting mAb showed high sensitivity and specificity against TEB characterized by ELISA with a half-maximal inhibitory concentration (IC50) of 0.19 ng mL-1 and with cross-reactivity (CR) values below 0.01% to several analogues of triazole fungicides. On the basis of the mAb produced, a quantum dot beads-based fluorescence immunochromatographic test strip assay (QBs-FITSA) was developed for rapid and sensitive detection of TEB in agricultural product samples. The QBs-FITSA exhibited a linear detection range from 0.02 to 1.25 ng mL-1 with a limit of detection (LOD) of 0.02 ng mL-1. Furthermore, using produced mAb, multiple high-throughput rapid immunoassay formats could be achieved as a convenient monitoring tool for evaluation of human and environmental exposure to TEB.
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Affiliation(s)
- Yulong Wang
- Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base of Ministry of Science and Technology, Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Junli Xu
- Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base of Ministry of Science and Technology, Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Yulou Qiu
- Zhejiang Proceincial Key Laboratory of Biometrology and Inspection and Quarantine, China Jiliang University, Hangzhou 310018, China
| | - Pan Li
- Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base of Ministry of Science and Technology, Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Beibei Liu
- Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base of Ministry of Science and Technology, Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Lifei Yang
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Bogdan Barnych
- Department of Entomology and Nematology and UCD Comprehensive Cancer Center, University of California, Davis, California 95616, United States
| | - Bruce D. Hammock
- Department of Entomology and Nematology and UCD Comprehensive Cancer Center, University of California, Davis, California 95616, United States
| | - Cunzheng Zhang
- Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base of Ministry of Science and Technology, Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
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7
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Tang Z, Liu X, Wang Y, Chen Q, Hammock BD, Xu Y. Nanobody-based fluorescence resonance energy transfer immunoassay for noncompetitive and simultaneous detection of ochratoxin a and ochratoxin B. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 251:238-245. [PMID: 31082608 PMCID: PMC7103568 DOI: 10.1016/j.envpol.2019.04.135] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Revised: 04/26/2019] [Accepted: 04/29/2019] [Indexed: 05/21/2023]
Abstract
A noncompetitive and homogeneous fluorescence resonance energy transfer (FRET) immunoassay was developed using a nanobody (Nb) for highly sensitive and simultaneous detection of ochratoxin A (OTA) and ochratoxin B (OTB). The promoted intrinsic fluorescence (λex: 280 nm) of tryptophan residues (donor) in Nb can excite the fluorescence of OTA and OTB (acceptor) for detection (λem: 430 nm). Using optimal conditions, the limits of detection of the Nb-based FRET immunoassay were 0.06 and 0.12 ng/mL for OTA and OTB, respectively. Minimal cross reactivity was detected for several analogues of OTA and OTB as well as nonspecific proteins and antibodies. Acceptable accuracy and precision were obtained in the spike and recovery study, and the results correlated well with those by HPLC. These results demonstrated that the developed method could be a useful tool for noncompetitive, homogeneous, and simultaneous detection of OTA and OTB as well as other environmental analytes with similar fluorescence properties.
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Affiliation(s)
- Zongwen Tang
- College of Food Science and Engineering, Hainan University, 58 Renmin Avenue, Haikou, 570228, PR China
| | - Xing Liu
- College of Food Science and Engineering, Hainan University, 58 Renmin Avenue, Haikou, 570228, PR China.
| | - Yuanyuan Wang
- College of Food Science and Engineering, Hainan University, 58 Renmin Avenue, Haikou, 570228, PR China
| | - Qi Chen
- College of Food Science and Engineering, Hainan University, 58 Renmin Avenue, Haikou, 570228, PR China
| | - Bruce D Hammock
- Department of Entomology and Nematology and UCD Comprehensive Cancer Center, University of California, Davis, CA, 95616, United States
| | - Yang Xu
- State Key Laboratory of Food Science and Technology, Nanchang University, 235 Nanjing East Road, Nanchang, 330047, PR China
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8
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Yao CY, Xu ZL, Wang H, Zhu F, Luo L, Yang JY, Sun YM, Lei HT, Tian YX, Shen YD. High affinity antibody based on a rationally designed hapten and development of a chemiluminescence enzyme immunoassay for quantification of Alternariol in fruit Juice, maize and flour. Food Chem 2019; 283:359-366. [DOI: 10.1016/j.foodchem.2018.12.127] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 12/29/2018] [Accepted: 12/29/2018] [Indexed: 12/22/2022]
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9
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Sun L, Zhao Q. A simple fluorescent aptamer based assay coupled with fluorescence scanning capillary array for aflatoxin B1. Analyst 2019; 143:4600-4605. [PMID: 30191220 DOI: 10.1039/c8an01093e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
We developed a simple aptamer fluorescence assay for aflatoxin B1 (AFB1) detection by using an array of capillaries. The 34-nt aptamer having a single fluorescein (FAM) label on the 24th T nucleotide generated a remarkable fluorescence increase upon AFB1 binding. The use of fluorescence scanning capillary array allowed for the analysis of multiple samples with low sample consumption, showing advantages of simplicity, rapidity and high throughput analysis. The detection limit of AFB1 reached 0.5 nM. This assay has great potential for analysis in food safety and environmental monitoring.
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Affiliation(s)
- Linlin Sun
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
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10
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Abstract
Modern analysis of food and feed is mostly focused on development of fast and reliable portable devices intended for field applications. In this review, electrochemical biosensors based on immunological reactions and aptamers are considered in the determination of mycotoxins as one of most common contaminants able to negatively affect human health. The characteristics of biosensors are considered from the point of view of general principles of bioreceptor implementation and signal transduction providing sub-nanomolar detection limits of mycotoxins. Moreover, the modern trends of bioreceptor selection and modification are discussed as well as future trends of biosensor development for mycotoxin determination are considered.
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11
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Lv J, Miao Y, Yan G. Detection of specific DNA sequences in Maize (Zea mays L.) based on phosphorescent quantum-dot exciton energy transfer. NEW J CHEM 2019. [DOI: 10.1039/c8nj06106h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The complementary sequence of genetically-modified marker sequence cauliflower mosaic virus 35S promoter (Ca MV 35S) DNA was trimmed and designed into sequences S1 and S2, which were separately modified onto the surfaces of room-temperature phosphorescent (RTP) quantum dots (QDs), forming QDs-S1 (P1) and QDs-S2 (P2), respectively.
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Affiliation(s)
- Jinzhi Lv
- Shanxi Normal University
- Linfen 041004
- P. R. China
| | - Yanming Miao
- Shanxi Normal University
- Linfen 041004
- P. R. China
| | - Guiqin Yan
- Shanxi Normal University
- Linfen 041004
- P. R. China
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12
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Chen Y, Zhang S, Hong Z, Lin Y, Dai H. A mimotope peptide-based dual-signal readout competitive enzyme-linked immunoassay for non-toxic detection of zearalenone. J Mater Chem B 2019; 7:6972-6980. [PMID: 31621766 DOI: 10.1039/c9tb01167f] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
In this study, a mimotope peptide-based non-toxic photoelectrochemical (PEC) competitive enzyme-linked immunoassay (ELISA) was established for ultrasensitive detection of zearalenone (ZEN) with dual-signal readout.
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Affiliation(s)
- Yanjie Chen
- College of Chemistry and Materials
- Fujian Normal University
- Fuzhou 350108
- P. R. China
| | - Shupei Zhang
- Fujian Provincial Maternity and Children's Hospital
- Affiliated hospital of Fujian Medical University
- Fuzhou
- China
| | - Zhensheng Hong
- College of Chemistry and Materials
- Fujian Normal University
- Fuzhou 350108
- P. R. China
| | - Yanyu Lin
- Ministry of Education Key Laboratory of Analysis and Detection for Food Safety, and Department of Chemistry
- Fuzhou University
- Fuzhou 350002
- P. R. China
| | - Hong Dai
- College of Chemistry and Materials
- Fujian Normal University
- Fuzhou 350108
- P. R. China
- Fujian Provincial Maternity and Children's Hospital
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13
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Peng R, He H, Wang Q, Yan X, Yu Q, Qin H, Lei Y, Luo L, Feng Y. Cu(Ⅱ) triggering redox-regulated anti-aggregation of gold nanoparticles for ultrasensitive visual sensing of iodide. Anal Chim Acta 2018; 1036:147-152. [DOI: 10.1016/j.aca.2018.06.080] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Revised: 06/13/2018] [Accepted: 06/29/2018] [Indexed: 12/17/2022]
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14
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Soares RRG, Santos DR, Pinto IF, Azevedo AM, Aires-Barros MR, Chu V, Conde JP. Multiplexed microfluidic fluorescence immunoassay with photodiode array signal acquisition for sub-minute and point-of-need detection of mycotoxins. LAB ON A CHIP 2018; 18:1569-1580. [PMID: 29736505 DOI: 10.1039/c8lc00259b] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Portable, rapid, cost effective and simple analytical tools are in increasing demand to facilitate the routine monitoring of target chemical/biological compounds at the point-of-need. Such devices are highly relevant within the context of food safety, particularly concerning the screening of highly toxic and strictly regulated mycotoxins. To achieve ultrarapid detection of mycotoxins, namely aflatoxin B1, ochratoxin A and deoxynivalenol, at the point-of-need, a novel multiplexed bead-based microfluidic competitive immunosensor, coupled with an array of a-Si:H thin-film photodiodes for integrated fluorescence signal acquisition, is reported. Simultaneously measuring the initial binding rate for each analyte of the sample under analysis against an internal reference, this device provided limits of detection below 1 ng mL-1 for all mycotoxins in a single-step assay and within 1 minute after mixing the sample under analysis with a fluorescent conjugate. The compatibility of the device with the analysis of mycotoxins spiked in corn samples was further demonstrated after performing a sample preparation procedure based on aqueous two-phase extraction. The short times of analysis and sensitivities in the low ng mL-1 range make these devices potentially competitive with the lateral flow devices that are currently the standard for this application. Furthermore, this device architecture and concept is amenable of being expanded to other analytes in food safety, biomedical and other applications.
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Affiliation(s)
- Ruben R G Soares
- Instituto de Engenharia de Sistemas e Computadores - Microsistemas e Nanotecnologias (INESC MN) and IN - Institute of Nanoscience and Nanotechnology, Lisbon, Portugal.
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15
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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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16
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Liu A, Anfossi L, Shen L, Li C, Wang X. Non-competitive immunoassay for low-molecular-weight contaminant detection in food, feed and agricultural products: A mini-review. Trends Food Sci Technol 2018. [DOI: 10.1016/j.tifs.2017.11.014] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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17
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Soares RRG, Ricelli A, Fanelli C, Caputo D, de Cesare G, Chu V, Aires-Barros MR, Conde JP. Advances, challenges and opportunities for point-of-need screening of mycotoxins in foods and feeds. Analyst 2018; 143:1015-1035. [DOI: 10.1039/c7an01762f] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Recent advances in analytical methods for mycotoxin screening in foods and feeds are reviewed, focusing on point-of-need detection using integrated devices.
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Affiliation(s)
- Ruben R. G. Soares
- Instituto de Engenharia de Sistemas e Computadores – Microsistemas e Nanotecnologias (INESC MN) and IN – Institute of Nanoscience and Nanotechnology
- Portugal
- IBB – Institute for Bioengineering and Biosciences
- Instituto Superior Técnico
- Universidade de Lisboa
| | | | - Corrado Fanelli
- Department of Environmental Biology
- University of Rome “La Sapienza”
- Rome
- Italy
| | - Domenico Caputo
- Department of Information Engineering
- Electronics and Telecommunications
- University of Rome “La Sapienza”
- Rome
- Italy
| | - Giampiero de Cesare
- Department of Information Engineering
- Electronics and Telecommunications
- University of Rome “La Sapienza”
- Rome
- Italy
| | - Virginia Chu
- Instituto de Engenharia de Sistemas e Computadores – Microsistemas e Nanotecnologias (INESC MN) and IN – Institute of Nanoscience and Nanotechnology
- Portugal
| | - M. Raquel Aires-Barros
- IBB – Institute for Bioengineering and Biosciences
- Instituto Superior Técnico
- Universidade de Lisboa
- Lisbon
- Portugal
| | - João P. Conde
- Instituto de Engenharia de Sistemas e Computadores – Microsistemas e Nanotecnologias (INESC MN) and IN – Institute of Nanoscience and Nanotechnology
- Portugal
- Department of Bioengineering
- Instituto Superior Técnico
- Universidade de Lisboa
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18
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Efficient Fluorescence Resonance Energy Transfer between Quantum Dots and Gold Nanoparticles Based on Porous Silicon Photonic Crystal for DNA Detection. SENSORS 2017; 17:s17051078. [PMID: 28489033 PMCID: PMC5470468 DOI: 10.3390/s17051078] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Revised: 04/27/2017] [Accepted: 05/06/2017] [Indexed: 11/16/2022]
Abstract
A novel assembled biosensor was prepared for detecting 16S rRNA, a small-size persistent specific for Actinobacteria. The mechanism of the porous silicon (PS) photonic crystal biosensor is based on the fluorescence resonance energy transfer (FRET) between quantum dots (QDs) and gold nanoparticles (AuNPs) through DNA hybridization, where QDs act as an emission donor and AuNPs serve as a fluorescence quencher. Results showed that the photoluminescence (PL) intensity of PS photonic crystal was drastically increased when the QDs-conjugated probe DNA was adhered to the PS layer by surface modification using a standard cross-link chemistry method. The PL intensity of QDs was decreased when the addition of AuNPs-conjugated complementary 16S rRNA was dropped onto QDs-conjugated PS. Based on the analysis of different target DNA concentration, it was found that the decrease of the PL intensity showed a good linear relationship with complementary DNA concentration in a range from 0.25 to 10 μM, and the detection limit was 328.7 nM. Such an optical FRET biosensor functions on PS-based photonic crystal for DNA detection that differs from the traditional FRET, which is used only in liquid. This method will benefit the development of a new optical FRET label-free biosensor on Si substrate and has great potential in biochips based on integrated optical devices.
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19
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Li Y, Sun L, Qian J, Wang C, Liu Q, Han E, Hao N, Zhang L, Cai J, Wang K. A homogeneous assay for highly sensitive detection of CaMV35S promoter in transgenic soybean by förster resonance energy transfer between nitrogen-doped graphene quantum dots and Ag nanoparticles. Anal Chim Acta 2016; 948:90-97. [PMID: 27871615 DOI: 10.1016/j.aca.2016.10.031] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2016] [Revised: 10/09/2016] [Accepted: 10/18/2016] [Indexed: 11/29/2022]
Abstract
In this work, a novel homogeneous assay for DNA quantitative analysis based on förster resonance energy transfer (FRET) was developed for cauliflwer mosaic virus 35s (CaMV35S) promoter of transgenic soybean detection. The homogenous FRET of fluorescence signal was fabricated by DNA hybridization with probe modified nitrogen-doped graphene quantum dots (NGQDs) and silver nanoparticles (AgNPs), which acted the donor-acceptor pairs for the first time. The highly efficient FRET and unique properties of the NGQDs made the proposed FRET system as a functionalized detection platform for labelling of DNA. Upon the recognition of specific target DNA (tDNA), the FRET between NGQDs and AgNPs was triggered to produce fluorescence quenching, which could be used for tDNA detection. The fabricated homogeneous FRET assay displayed a wide linear range of 0.1-500.0 nM and a low limit of detection 0.03 nM for the detection of CaMV35S (S/N = 3). This proposed biosensor revealed high specificity to detect tDNA, with acceptable intra-assay precision and excellent stability. This method was successfully applied to identify the real sample of 0.5% containing transgenic soybean, which achieved the most of national law regulations. This assay was further validated by polymerase chain reaction as the genetically modified organisms, suggesting that the proposed FRET system is a feasible tool for the further daily genetically modified organism detection.
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Affiliation(s)
- Yaqi Li
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Li Sun
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Jing Qian
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Chengke Wang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Qian Liu
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - En Han
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Nan Hao
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Liuping Zhang
- Sinograin Zhenjiang Grains & Oils Quality Testing Center Co., Ltd., Zhenjiang, 212013, China
| | - Jianrong Cai
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, 212013, China.
| | - Kun Wang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China.
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20
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Mycotoxin Determination in Foods Using Advanced Sensors Based on Antibodies or Aptamers. Toxins (Basel) 2016; 8:toxins8080239. [PMID: 27529281 PMCID: PMC4999855 DOI: 10.3390/toxins8080239] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Revised: 07/08/2016] [Accepted: 07/08/2016] [Indexed: 12/24/2022] Open
Abstract
Mycotoxin contamination threatens health and life of humans and animals throughout the food supply chains. Many of the mycotoxins have been proven to be carcinogens, teratogens and mutagens. The reliable and sensitive sensing methods are requested to monitor mycotoxin contamination. Advanced sensors based on antibodies or aptamers boast the advantages of high sensitivity and rapidity, and have been used in the mycotoxin sensing. These sensors are miniaturized, thereby lowering costs, and are applicable to high-throughput modes. In this work, the latest developments in sensing strategies for mycotoxin determination were critically discussed. Optical and electrochemical sensing modes were compared. The sensing methods for single mycotoxin or multiple mycotoxins in food samples were reviewed, along with the challenges and the future of antibody or aptamer-based sensors. This work might promote academic studies and industrial applications for mycotoxin sensing.
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21
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Li T, Choi YH, Shin YB, Kim HJ, Kim MG. A fluorescence enhancement-based label-free homogeneous immunoassay of benzo[a]pyrene (BaP) in aqueous solutions. CHEMOSPHERE 2016; 150:407-413. [PMID: 26796590 DOI: 10.1016/j.chemosphere.2016.01.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2014] [Revised: 12/15/2015] [Accepted: 01/04/2016] [Indexed: 06/05/2023]
Abstract
A fluorescence enhancement-based immunoassay has been developed for the detection of the polycyclic aromatic hydrocarbons (PAH), benzo[a]pyrene (BaP), in aqueous solutions. The results of this study show that BaP, which inefficiently fluoresces in aqueous solution, displays enhanced fluorescence when bound to the anti-BaP antibody (anti-BaP), as part of a label-free immunoassay system. Binding to anti-BaP results in a 3.12-fold increase in the fluorescence intensity of BaP, which emits at 435 nm when excited at 280 nm, due to the hydrophobic interaction and fluorescence resonance energy transfer (FRET) between antibody and antigen. As result of this phenomenon, the antibody-based fluorescence immunoassay system can be used to detect BaP specifically with a limit of detection (LOD) of 0.06 ng mL(-1). Finally, extraction recoveries of BaP from spiked wheat and barley samples were found to be in the range of 80.5-87.0% and 92.9-92.1%, respectively.
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Affiliation(s)
- Taihua Li
- College of Biology and the Environment, Nanjing Forestry University, Nanjing 210-037, China
| | - Yo Han Choi
- Department of Chemistry, School of Physics and Chemistry, Gwangju Institute of Science & Technology (GIST), 261 Cheomdan-gwagiro, Gwangju 500-712, South Korea; Department of Microbiology, College of Medicine, Chungnam National University, Daejeon 301-747, South Korea
| | - Yong-Beom Shin
- Biomedical Translational Research Center, Korea Research Institute of Bioscience & Biotechnology (KRIBB), 125 Gwahak-ro, Yuseong-gu, Daejeon 305-806, South Korea
| | - Hwa-Jung Kim
- Department of Microbiology, College of Medicine, Chungnam National University, Daejeon 301-747, South Korea
| | - Min-Gon Kim
- Department of Chemistry, School of Physics and Chemistry, Gwangju Institute of Science & Technology (GIST), 261 Cheomdan-gwagiro, Gwangju 500-712, South Korea; Advanced Photonics Research Institute, Gwangju Institute of Science & Technology (GIST), 261 Cheomdan-gwagiro, Gwangju 500-712, South Korea.
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22
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Chauhan R, Singh J, Sachdev T, Basu T, Malhotra BD. Recent advances in mycotoxins detection. Biosens Bioelectron 2016; 81:532-545. [PMID: 27019032 DOI: 10.1016/j.bios.2016.03.004] [Citation(s) in RCA: 176] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Revised: 02/25/2016] [Accepted: 03/03/2016] [Indexed: 01/01/2023]
Abstract
Mycotoxins contamination in both food and feed is inevitable. Mycotoxin toxicity in foodstuff can occur at very low concentrations necessitating early availability of sensitive and reliable methods for their detection. The present research thrust is towards the development of a user friendly biosensor for mycotoxin detection at both academic and industrial levels to replace conventional expensive chromatographic and ELISA techniques. This review critically analyzes the recent research trend towards the construction of immunosensor, aptasensor, enzymatic sensors and others for mycotoxin detection with a reference to label and label free methods, synthesis of new materials including nano dimension, and transuding techniques. Technological aspects in the development of biosensors for mycotoxin detection, current challenges and future prospects are also included to provide a overview and suggestions for future research directions.
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Affiliation(s)
- Ruchika Chauhan
- Amity Institute of Nanotechnology, Amity University Uttar Pradesh, Noida, India.
| | - Jay Singh
- Department of Applied Chemistry & Polymer Technology, Delhi Technological University, Delhi 110042, India.
| | - Tushar Sachdev
- Amity Institute of Nanotechnology, Amity University Uttar Pradesh, Noida, India.
| | - T Basu
- Amity Institute of Nanotechnology, Amity University Uttar Pradesh, Noida, India.
| | - B D Malhotra
- Department of Biotechnology, Delhi Technological University, Delhi, India.
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23
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Li A, Tang L, Song D, Song S, Ma W, Xu L, Kuang H, Wu X, Liu L, Chen X, Xu C. A SERS-active sensor based on heterogeneous gold nanostar core-silver nanoparticle satellite assemblies for ultrasensitive detection of aflatoxinB1. NANOSCALE 2016; 8:1873-1878. [PMID: 26732202 DOI: 10.1039/c5nr08372a] [Citation(s) in RCA: 108] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A surface-enhanced Raman scattering (SERS) sensor based on gold nanostar (Au NS) core-silver nanoparticle (Ag NP) satellites was fabricated for the first time to detect aflatoxinB1 (AFB1). We constructed the SERS sensor using AFB1 aptamer (DNA1)-modified Ag satellites and a complementary sequence (DNA2)-modified Au NS core. The Raman label (ATP) was modified on the surface of Ag satellites. The SERS signal was enhanced when the satellite NP was attached to the Au core NS. The AFB1 aptamer on the surface of Ag satellites would bind to the targets when AFB1 was present in the system, Ag satellites were then removed and the SERS signal decreased. This SERS sensor showed superior specificity for AFB1 and the linear detection range was from 1 to 1000 pg mL(-1) with the limit of detection (LOD) of 0.48 pg mL(-1). The excellent recovery experiment using peanut milk demonstrated that the sensor could be applied in food and environmental detection.
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Affiliation(s)
- Aike Li
- Cereals & Oils Nutrition Research Group, Academy of Science & Technology of State Administration of Grain, Beijing 100037, People's Republic of China.
| | - Lijuan Tang
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, JiangSu 214122, People's Republic of China.
| | - Dan Song
- Cereals & Oils Nutrition Research Group, Academy of Science & Technology of State Administration of Grain, Beijing 100037, People's Republic of China.
| | - Shanshan Song
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, JiangSu 214122, People's Republic of China.
| | - Wei Ma
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, JiangSu 214122, People's Republic of China.
| | - Liguang Xu
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, JiangSu 214122, People's Republic of China.
| | - Hua Kuang
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, JiangSu 214122, People's Republic of China.
| | - Xiaoling Wu
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, JiangSu 214122, People's Republic of China.
| | - Liqiang Liu
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, JiangSu 214122, People's Republic of China.
| | - Xin Chen
- Hubei Collaborative Innovation Center for Processing of Agricultural Products, Wuhan Polytechnic University, Wuhan, Hubei 430023, People's Republic of China
| | - Chuanlai Xu
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, JiangSu 214122, People's Republic of China.
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24
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Arola HO, Tullila A, Kiljunen H, Campbell K, Siitari H, Nevanen TK. Specific Noncompetitive Immunoassay for HT-2 Mycotoxin Detection. Anal Chem 2016; 88:2446-52. [DOI: 10.1021/acs.analchem.5b04591] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Henri O. Arola
- VTT Technical
Research Centre of Finland, Tietotie
2, FI-02150 Espoo, Finland
| | - Antti Tullila
- VTT Technical
Research Centre of Finland, Tietotie
2, FI-02150 Espoo, Finland
| | - Harri Kiljunen
- VERIFIN, Finnish
Institute for Chemical Weapons Convention, Department of Chemistry, University of Helsinki, A. I. Virtasen
aukio 1, FI-00014 Helsinki, Finland
| | - Katrina Campbell
- Institute for Global
Food Security, Queen’s University Belfast, School of Biological Sciences, 8 Cloreen Park, Malone Road, Belfast BT7 1NN, United Kingdom
| | - Harri Siitari
- Faculty
of Pharmacy, University of Helsinki, Viikinkaari 5 E, FI-00014 Helsinki, Finland
| | - Tarja K. Nevanen
- VTT Technical
Research Centre of Finland, Tietotie
2, FI-02150 Espoo, Finland
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25
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Pu J, Hu X, Liao J, Li YW, Qin JL, Xie YL, Zhan CG, Yang XL, Liao F. Achievement of linear response for competitive bioaffinity assays of ligands: criteria of optimized interaction systems. RSC Adv 2016. [DOI: 10.1039/c6ra06426d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
For a linear response, an optimized competitive bioaffinity assay of a ligand requiresCRT> 3 ×CPT,CPT> 50 ×KdR, andKdR> 260 ×KdX(CRTandCPTare concentrations of the probe and protein whileKdXandKdRareKdfor the ligand and probe, respectively).
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Affiliation(s)
- J. Pu
- Key Laboratory of Clinical Laboratory Diagnosis of the Education Ministry
- College of Laboratory Medicine
- Chongqing Medical University
- Chongqing 400016
- China
| | - X. L. Hu
- Key Laboratory of Clinical Laboratory Diagnosis of the Education Ministry
- College of Laboratory Medicine
- Chongqing Medical University
- Chongqing 400016
- China
| | - J. Liao
- Central Laboratory
- Yongchuan Hospital
- Chongqing Medical University
- Chongqing 402160
- China
| | - Y. W. Li
- Key Laboratory of Clinical Laboratory Diagnosis of the Education Ministry
- College of Laboratory Medicine
- Chongqing Medical University
- Chongqing 400016
- China
| | - J. L. Qin
- Key Laboratory of Clinical Laboratory Diagnosis of the Education Ministry
- College of Laboratory Medicine
- Chongqing Medical University
- Chongqing 400016
- China
| | - Y. L. Xie
- Key Laboratory of Clinical Laboratory Diagnosis of the Education Ministry
- College of Laboratory Medicine
- Chongqing Medical University
- Chongqing 400016
- China
| | - C.-G. Zhan
- Molecular Modeling and Biopharmaceutical Center
- Department of Pharmaceutical Sciences
- College of Pharmacy
- University of Kentucky
- Lexington
| | - X. L. Yang
- Key Laboratory of Clinical Laboratory Diagnosis of the Education Ministry
- College of Laboratory Medicine
- Chongqing Medical University
- Chongqing 400016
- China
| | - F. Liao
- Key Laboratory of Clinical Laboratory Diagnosis of the Education Ministry
- College of Laboratory Medicine
- Chongqing Medical University
- Chongqing 400016
- China
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26
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Integrated platform with magnetic purification and rolling circular amplification for sensitive fluorescent detection of ochratoxin A. Biosens Bioelectron 2015; 74:534-8. [DOI: 10.1016/j.bios.2015.06.056] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Revised: 06/16/2015] [Accepted: 06/25/2015] [Indexed: 01/12/2023]
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27
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Chauhan R, Singh J, Solanki PR, Basu T, O’Kennedy R, Malhotra B. Electrochemical piezoelectric reusable immunosensor for aflatoxin B1 detection. Biochem Eng J 2015. [DOI: 10.1016/j.bej.2015.07.002] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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28
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29
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Li T, Kim BB, Ha TH, Shin YB, Kim MG. The effects of pH and surfactants on the absorption and fluorescence properties of ochratoxin A and zearalenone. LUMINESCENCE 2015; 30:1106-11. [DOI: 10.1002/bio.2866] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Accepted: 01/03/2015] [Indexed: 11/09/2022]
Affiliation(s)
- Taihua Li
- Department of School of Physics and Chemistry; Gwangju Institute of Science & Technology (GIST); 261 Cheomdan-gwagiro Gwangju 500-712 Republic of Korea
| | - Bo Bae Kim
- Biomedical Translational Research Center; Korea Research Institute of Bioscience & Biotechnology (KRIBB); 125 Gwahak-ro, Yuseong-gu Daejeon 305-806 Republic of Korea
| | - Tae Hwan Ha
- Biomedical Translational Research Center; Korea Research Institute of Bioscience & Biotechnology (KRIBB); 125 Gwahak-ro, Yuseong-gu Daejeon 305-806 Republic of Korea
| | - Yong-Beom Shin
- Biomedical Translational Research Center; Korea Research Institute of Bioscience & Biotechnology (KRIBB); 125 Gwahak-ro, Yuseong-gu Daejeon 305-806 Republic of Korea
| | - Min-Gon Kim
- Department of School of Physics and Chemistry; Gwangju Institute of Science & Technology (GIST); 261 Cheomdan-gwagiro Gwangju 500-712 Republic of Korea
- Advanced Photonics Research Institute; Gwangju Institute of Science & Technology (GIST); 261 Cheomdan-gwagiro Gwangju 500-712 Republic of Korea
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30
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Ghisaidoobe ABT, Chung SJ. Intrinsic tryptophan fluorescence in the detection and analysis of proteins: a focus on Förster resonance energy transfer techniques. Int J Mol Sci 2014; 15:22518-38. [PMID: 25490136 PMCID: PMC4284722 DOI: 10.3390/ijms151222518] [Citation(s) in RCA: 517] [Impact Index Per Article: 51.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Revised: 11/08/2014] [Accepted: 11/18/2014] [Indexed: 12/18/2022] Open
Abstract
Förster resonance energy transfer (FRET) occurs when the distance between a donor fluorophore and an acceptor is within 10 nm, and its application often necessitates fluorescent labeling of biological targets. However, covalent modification of biomolecules can inadvertently give rise to conformational and/or functional changes. This review describes the application of intrinsic protein fluorescence, predominantly derived from tryptophan (λ EX ≈ 280 nm, λ EM ≈ 350 nm), in protein-related research and mainly focuses on label-free FRET techniques. In terms of wavelength and intensity, tryptophan fluorescence is strongly influenced by its (or the proteinlocal environment, which, in addition to fluorescence quenching, has been applied to study protein conformational changes. Intrinsic Förster resonance energy transfer (iFRET), a recently developed technique, utilizes the intrinsic fluorescence of tryptophan in conjunction with target-specific fluorescent probes as FRET donors and acceptors, respectively, for real time detection of native proteins.
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Affiliation(s)
| | - Sang J Chung
- Department of Chemistry, Dongguk University, Seoul 100-715, Korea.
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31
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Yang X, Hu X, Xu B, Wang X, Qin J, He C, Xie Y, Li Y, Liu L, Liao F. Fluorometric titration approach for calibration of quantity of binding site of purified monoclonal antibody recognizing epitope/hapten nonfluorescent at 340 nm. Anal Chem 2014; 86:5667-72. [PMID: 24848296 DOI: 10.1021/ac501111h] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A fluorometric titration approach was proposed for the calibration of the quantity of monoclonal antibody (mcAb) via the quench of fluorescence of tryptophan residues. It applied to purified mcAbs recognizing tryptophan-deficient epitopes, haptens nonfluorescent at 340 nm under the excitation at 280 nm, or fluorescent haptens bearing excitation valleys nearby 280 nm and excitation peaks nearby 340 nm to serve as Förster-resonance-energy-transfer (FRET) acceptors of tryptophan. Titration probes were epitopes/haptens themselves or conjugates of nonfluorescent haptens or tryptophan-deficient epitopes with FRET acceptors of tryptophan. Under the excitation at 280 nm, titration curves were recorded as fluorescence specific for the FRET acceptors or for mcAbs at 340 nm. To quantify the binding site of a mcAb, a universal model considering both static and dynamic quench by either type of probes was proposed for fitting to the titration curve. This was easy for fitting to fluorescence specific for the FRET acceptors but encountered nonconvergence for fitting to fluorescence of mcAbs at 340 nm. As a solution, (a) the maximum of the absolute values of first-order derivatives of a titration curve as fluorescence at 340 nm was estimated from the best-fit model for a probe level of zero, and (b) molar quantity of the binding site of the mcAb was estimated via consecutive fitting to the same titration curve by utilizing such a maximum as an approximate of the slope for linear response of fluorescence at 340 nm to quantities of the mcAb. This fluorometric titration approach was proved effective with one mcAb for six-histidine and another for penicillin G.
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Affiliation(s)
- Xiaolan Yang
- Unit for Analytical Probes and Protein Biotechnology, Key Laboratory of Medical Laboratory Diagnostics of the Education Ministry, College of Laboratory Medicine, Chongqing Medical University , Chongqing 400016, China
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32
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Xu W, Xiong Y, Lai W, Xu Y, Li C, Xie M. A homogeneous immunosensor for AFB1 detection based on FRET between different-sized quantum dots. Biosens Bioelectron 2014; 56:144-50. [DOI: 10.1016/j.bios.2014.01.007] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2013] [Revised: 12/24/2013] [Accepted: 01/03/2014] [Indexed: 10/25/2022]
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33
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Selective and sensitive homogenous assay of serum albumin with 1-anilinonaphthalene-8-sulphonate as a biosensor. Anal Chim Acta 2014; 829:60-7. [DOI: 10.1016/j.aca.2014.04.047] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2013] [Revised: 04/21/2014] [Accepted: 04/23/2014] [Indexed: 11/20/2022]
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34
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Li T, Kim BB, Shim WB, Byun JY, Chung DH, Shin YB, Kim MG. Homogeneous Fluorescence Resonance Energy Transfer Immunoassay for the Determination of Zearalenone. ANAL LETT 2014. [DOI: 10.1080/00032719.2013.843186] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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35
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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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36
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Li W, Powers S, Dai S. Using commercial immunoassay kits for mycotoxins: ‘joys and sorrows’? WORLD MYCOTOXIN J 2014. [DOI: 10.3920/wmj2014.1715] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Rapid test methods are widely used for measuring mycotoxins in a variety of matrices. This review presents an overview of the current commercially available immunoassay rapid test formats. Enzyme linked immune-sorbent assay (ELISA), lateral flow tests, flow through immunoassay, fluorescent polarisation immunoassay, and immunoaffinity columns coupled with fluorometric assay are common formats in the current market. The two existing evaluation programs for commercial testing kits by United State Department of Agricultural Grain Inspection, Packers & Stockyards Administration (USDA-GIPSA) and AOAC Research Institute are introduced. The strengths and weaknesses of these test kits are discussed with regard to the application scope, variance, specificity and cross reactivity, accuracy and precision, and measurement range. Generally speaking, the current commercially available testing kits meet research and industrial needs as ‘fit-for-purpose’. Furthermore, quality assurance concerns and future perspectives are elaborated for broader application of commercial test kits in research, industry and regulatory applications. It is expected that new commercial kits based on advanced technologies such as electrochemical affinity biosensors, molecularly imprinted polymers, surface plasmon resonance, fluorescence resonance energy transfer, aptamer-based biosensors and dynamic light scattering might be available to users in the future. Meanwhile, harmonisation of testing kit evaluation, incorporation of more quality assurance into the testing kit utilisation scheme, and a larger variety of kits available at lower cost will expand the usage of testing kits for food safety testing worldwide.
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Affiliation(s)
- Wei Li
- Office of the Texas State Chemist, Texas A&M University, 445 Agronomy Road, College Station, TX 77843, USA
| | - S. Powers
- VICAM, 34 Maple Street, Milford, MA 02157, USA
| | - S.Y. Dai
- Department of Veterinary Pathobiology, Texas A&M University, College Station, 77843, USA
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Lai W, Zhuang J, Que X, Fu L, Tang D. Mesoporous nanogold–MnO2–poly(o-phenylenediamine) hollow microspheres as nanotags and peroxidase mimics for sensing biomolecules. Biomater Sci 2014; 2:1073-1079. [DOI: 10.1039/c3bm60284b] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mesoporous MnO2 nanotags as peroxidase mimics for sensing biomolecules.
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Affiliation(s)
- Wenqiang Lai
- Ministry of Education Key Laboratory of Analysis and Detection for Food Safety
- Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety
- Department of Chemistry
- Fuzhou University
- Fuzhou 350108, P.R. China
| | - Junyang Zhuang
- Ministry of Education Key Laboratory of Analysis and Detection for Food Safety
- Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety
- Department of Chemistry
- Fuzhou University
- Fuzhou 350108, P.R. China
| | - Xiaohua Que
- Ministry of Education Key Laboratory of Analysis and Detection for Food Safety
- Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety
- Department of Chemistry
- Fuzhou University
- Fuzhou 350108, P.R. China
| | - Libing Fu
- Ministry of Education Key Laboratory of Analysis and Detection for Food Safety
- Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety
- Department of Chemistry
- Fuzhou University
- Fuzhou 350108, P.R. China
| | - Dianping Tang
- Ministry of Education Key Laboratory of Analysis and Detection for Food Safety
- Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety
- Department of Chemistry
- Fuzhou University
- Fuzhou 350108, P.R. China
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