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Kleebayoon A, Wiwanitkit V. FIA ( fluorescent immunoassay) test in Dengue. Indian J Med Microbiol 2024; 47:100488. [PMID: 37951131 DOI: 10.1016/j.ijmmb.2023.100488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 08/31/2023] [Accepted: 09/28/2023] [Indexed: 11/13/2023]
Affiliation(s)
| | - Viroj Wiwanitkit
- Chandigarh University, India; Joesph Ayobabalola University, Ikeji-Arakeji, Nigeria
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2
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Linghu X, Qiu J, Wang S, Lu Y. Fluorescence immunoassay based on magnetic separation and ZnCdSe/ZnS quantum dots as a signal marker for intelligent detection of sesame allergen in foods. Talanta 2023; 256:124323. [PMID: 36758505 DOI: 10.1016/j.talanta.2023.124323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 01/27/2023] [Accepted: 02/01/2023] [Indexed: 02/05/2023]
Abstract
To detect sesame allergens, a novel fluorescent immunoassay incorporating a magnetic separation step has been developed via two measurement devices: a fluorescence spectrophotometer and a smartphone equipped with a color reader. Sesame allergen monoclonal antibody (Ab) was covalently bonded with quantum dots (QDs) to act as a signal probe. The capture probes were synthesized as sesame allergen (SA) modified carboxyl-functional magnetic polystyrene microspheres (MPMs). Analytical variables such as the amount of modified SA, the reaction volume of the QDs-Ab, the ionic strength, the pH, and the incubation time of the reaction were optimized. The analytical range and the limit of detection (LOD) of the spectrophotometer-based assay were 80-640 μg/L and 12.75 μg/L, respectively. The analytical range and the LOD with smartphone read-out were 80-640 μg/L and 10.15 μg/L, respectively. Furthermore, the developed assay using the fluorescence spectrophotometer and the smartphone read-out was successfully applied to field testing of SA in solution extracts of biscuits, bread, almond beverage, and energy bars with acceptable results. The recovery rates were in the range 89-108%. It was concluded that the new assay may be used for rapid sesame allergen testing in the laboratory and in the field.
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Affiliation(s)
- Xiaopan Linghu
- State Key Laboratory for Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, 300457, China
| | - Jinping Qiu
- State Key Laboratory for Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, 300457, China
| | - ShaSha Wang
- State Key Laboratory for Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, 300457, China
| | - Yang Lu
- State Key Laboratory for Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, 300457, China.
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3
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Shan Y, Wang B, Huang H, Yan K, Li W, Wang S, Liu F. Portable high-throughput multimodal immunoassay platform for rapid on-site COVID-19 diagnostics. Anal Chim Acta 2023; 1238:340634. [PMID: 36464448 PMCID: PMC9671405 DOI: 10.1016/j.aca.2022.340634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 09/21/2022] [Accepted: 11/15/2022] [Indexed: 11/17/2022]
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) as a causal agent of Coronavirus Disease 2019 (COVID-19) has led to the global pandemic. Though the real-time reverse transcription polymerase chain reaction (RT-PCR) acting as a gold-standard method has been widely used for COVID-19 diagnostics, it can hardly support rapid on-site applications or monitor the stage of disease development as well as to identify the infection and immune status of rehabilitation patients. To suit rapid on-site COVID-19 diagnostics under various application scenarios with an all-in-one device and simple detection reagents, we propose a high-throughput multimodal immunoassay platform with fluorescent, colorimetric, and chemiluminescent immunoassays on the same portable device and a multimodal reporter probe using quantum dot (QD) microspheres modified with horseradish peroxidase (HRP) coupled with goat anti-human IgG. The recombinant nucleocapsid protein fixed on a 96-well plate works as the capture probe. In the condition with the target under detection, both reporter and capture probes can be bound by such target. When illuminated by excitation light, fluorescence signals from QD microspheres can be collected for target quantification often at a fast speed. Additionally, when pursuing simple detection without using any sensing devices, HRP-catalyzed TMB colorimetric immunoassay is employed; and when pursuing highly sensitive detection, HRP-catalyzed luminol chemiluminescent immunoassay is established. Verified by the anti-SARS-CoV-2 N humanized antibody, the sensitivities of colorimetric, fluorescent, and chemiluminescent immunoassays are respectively 20, 80, and 640 times more sensitive than that of the lateral flow colloidal gold immunoassay strip. Additionally, such a platform can simultaneously detect multiple samples at the same time thus supporting high-throughput sensing; and all these detecting operations can be implemented on-site within 50 min relying on field-operable processing and field-portable devices. Such a high-throughput multimodal immunoassay platform can provide a new all-in-one solution for rapid on-site diagnostics of COVID-19 for different detecting purposes.
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Affiliation(s)
- Yanke Shan
- Joint International Research Laboratory of Animal Health and Food Safety of Ministry of Education & Single Molecule Nanometry Laboratory (Sinmolab), Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China
| | - Bin Wang
- Joint International Research Laboratory of Animal Health and Food Safety of Ministry of Education & Single Molecule Nanometry Laboratory (Sinmolab), Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China
| | - Huachuan Huang
- School of Manufacture Science and Engineering, Key Laboratory of Testing Technology for Manufacturing Process, Ministry of Education, Southwest University of Science and Technology, Mianyang, Sichuan, 621010, China
| | - Keding Yan
- Advanced Institute of Micro-Nano Intelligent Sensing (AIMNIS), School of Electronic Information Engineering, Xi'an Technological University, Xi'an, Shaanxi, 710032, China
| | - Wenzhi Li
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, 710000, China.
| | - Shouyu Wang
- Joint International Research Laboratory of Animal Health and Food Safety of Ministry of Education & Single Molecule Nanometry Laboratory (Sinmolab), Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China; OptiX+ Laboratory, Wuxi, Jiangsu, China.
| | - Fei Liu
- Joint International Research Laboratory of Animal Health and Food Safety of Ministry of Education & Single Molecule Nanometry Laboratory (Sinmolab), Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China.
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4
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Liu J, Ruan G, Ma W, Sun Y, Yu H, Xu Z, Yu C, Li H, Zhang CW, Li L. Horseradish peroxidase-triggered direct in situ fluorescent immunoassay platform for sensing cardiac troponin I and SARS-CoV-2 nucleocapsid protein in serum. Biosens Bioelectron 2022; 198:113823. [PMID: 34838374 PMCID: PMC8606172 DOI: 10.1016/j.bios.2021.113823] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 10/27/2021] [Accepted: 11/18/2021] [Indexed: 12/12/2022]
Abstract
Direct in situ fluorescent enzyme-linked immunosorbent assay (ELISA) is rarely investigated and reported. Herein, a direct in situ high-performance HRP-labeled fluorescent immunoassay platform was constructed. The platform was developed based on a rapid in situ fluorogenic reaction between Polyethyleneimine (PEI) and p-Phenylenediamine (PPD) analogues to generate fluorescent copolymer nanoparticles (FCNPs). The formation mechanism of FCNPs was found to be the oxidation of •OH radicals, which was further proved by nitrogen protection and scavenger of •OH radicals. Meantime, the fluorescence wavelength of FCNPs could be adjusted from 471 to 512 nm by introducing various substitution groups into the PPD structure. Using cardiac troponin I (cTnI) and SARS-CoV-2 nucleocapsid protein (N-protein) as the model antigens, the proposed fluorescent ELISA exhibited a wide dynamic range of 5-180 ng/mL and a low limit of detection (LOD) of 0.19 ng/mL for cTnI, and dynamic range of 0-120 ng/mL and a LOD of 0.33 ng/mL for SARS-CoV-2 N protein, respectively. Noteworthy, the proposed method was successful applied to evaluate the cTnI and SARS-CoV-2 N protein levels in serum with satisfied results. Therefore, the proposed platform paved ways for developing novel fluorescence-based HRP-labeled ELISA technologies and broadening biomarker related clinical diagnostics.
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Affiliation(s)
- Jinhua Liu
- Institute of Advanced Materials (IAM), Key Laboratory of Flexible Electronics (KLOFE) Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China.
| | - Guotong Ruan
- Institute of Advanced Materials (IAM), Key Laboratory of Flexible Electronics (KLOFE) Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
| | - Wenlin Ma
- Institute of Advanced Materials (IAM), Key Laboratory of Flexible Electronics (KLOFE) Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
| | - Yujie Sun
- Institute of Advanced Materials (IAM), Key Laboratory of Flexible Electronics (KLOFE) Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
| | - Haidong Yu
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering Northwestern Polytechnical University, Xi'an, 710072, PR China
| | - Zhihui Xu
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, PR China
| | - Changmin Yu
- Institute of Advanced Materials (IAM), Key Laboratory of Flexible Electronics (KLOFE) Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
| | - Hai Li
- Institute of Advanced Materials (IAM), Key Laboratory of Flexible Electronics (KLOFE) Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
| | - Cheng-Wu Zhang
- School of Basic Medical Sciences, Shanxi Medical University, Xinjian Road, Taiyuan, 310003, PR China.
| | - Lin Li
- Institute of Advanced Materials (IAM), Key Laboratory of Flexible Electronics (KLOFE) Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China.
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Becheva ZR, Ivanov YL, Godjevargova TI, Tchorbanov AI. Simultaneous determination of ochratoxin A and enterotoxin A in milk by magnetic nanoparticles based fluorescent immunoassay. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2021; 38:1218-1236. [PMID: 33955808 DOI: 10.1080/19440049.2021.1914866] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Ochratoxin A (OTA) and staphylococcus enterotoxin A (SEA) are highly toxic contaminants and have induced human health problems. They commonly occur in milk and milk products. A competitive fluorescent immunoassay was developed for rapid and simultaneous determination of these toxins in milk samples. The procedure was based on the competitive immunoreactions between antigens in sample and antigen-fluorescent dye conjugates with immobilised antibodies on magnetic nanoparticles (MNPs). Each monoclonal antibody specifically recognises its corresponding toxin (antigen), and there is no cross-reactivity in the assay. First, monoclonal antibodies against OTA and SEA were produced. The activity of the obtained antibodies was determined by fluorescent-linked immunosorbent assay. Then, the monoclonal antibodies were immobilised on MNPs. The amounts of immobilised anti-OTA antibody and anti-SEA antibody were determined to be 20 and 22 μg mL-1, respectively. The antigen-fluorescent dye conjugates OTA-OVA-ATTO620 and SEA-FITC were prepared. The optimal amount of immobilised antibodies for competitive immunoassay was determined. It was found that the linear range of OTA in buffer was larger (0.001-100 ng mL-1) than the linear range of SEA (0.001-20 ng mL-1). The results for simultaneous determination of OTA and SEA in sixfold diluted milk were almost the same in buffer; the linear range for OTA was from 0.005 to 100 ng mL-1 and for SEA from 0.005 to 20 ng mL-1. The detection limit for both OTA and SEA in milk was 0.004 ng mL-1. The developed method took half the time of the individual assays (20 min). The assay was evaluated using spiked milk samples. The influences of somatic cell count, fat, pH and protein concentration in milk on immunoassay were studied. In summary, this developed immunoassay could provide an effective and rapid approach for detecting multi-toxins in milk samples.
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Affiliation(s)
- Zlatina R Becheva
- Department of Biotechnology, Faculty of Technical Science, "Prof. Dr Assen Zlatarov" University, Burgas, Bulgaria
| | - Yavor L Ivanov
- Department of Biotechnology, Faculty of Technical Science, "Prof. Dr Assen Zlatarov" University, Burgas, Bulgaria
| | - Tzonka I Godjevargova
- Department of Biotechnology, Faculty of Technical Science, "Prof. Dr Assen Zlatarov" University, Burgas, Bulgaria
| | - Andrey I Tchorbanov
- Laboratory of Experimental Immunology, Institute of Microbiology, Bulgarian Academy of Sciences, Sofia, Bulgaria
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6
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Dong B, Li H, Sun J, Li Y, Mari GM, Yu X, Yu W, Wen K, Shen J, Wang Z. Magnetic assisted fluorescence immunoassay for sensitive chloramphenicol detection using carbon dots@CaCO 3 nanocomposites. J Hazard Mater 2021; 402:123942. [PMID: 33254829 DOI: 10.1016/j.jhazmat.2020.123942] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 08/24/2020] [Accepted: 09/04/2020] [Indexed: 06/12/2023]
Abstract
Analytical methods with high sensitivities and short assay times are urgently required for the screening of "zero tolerance" hazardous substances in food. Herein, we propose a fluorescent immunoassay for the highly sensitive and rapid analysis of chloramphenicol (CAP) based on carbon dots (CDs)-encapsulated CaCO3 nanospheres and magnetic nanoparticles (MNPs). The fluorescent immunoprobes were prepared by coupling the anti-CAP antibodies to carboxymethyl cellulose-functional CDs@CaCO3 nanospheres. Chitosan-modified MNPs with "core-shell" structures were prepared and then conjugated to the CAP hapten, acting as the nano-carrier and interface for the immunoreaction. With the assistance of MNPs, the established fluorescent immunoassay achieved the sensitive detection of CAP in chicken with a limit of detection of 0.03 μg kg-1 and recoveries ranging from 83.7%-105.0%. The analysis results of the fluorescent immunoassay were evaluated by the enzyme-linked immunosorbent assay, having a correlation coefficient of 0.981. Our work provides a rapid, facile, and reliable strategy for the highly sensitive analysis of food contaminants based on "green" fluorescent nanoprobes.
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Affiliation(s)
- Baolei Dong
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Laboratory of Food Quality and Safety, China Agricultural University, 100193 Beijing, People's Republic of China
| | - Hongfang Li
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Laboratory of Food Quality and Safety, China Agricultural University, 100193 Beijing, People's Republic of China
| | - Jiefang Sun
- Beijing Key Laboratory of Diagnostic and Traceability for Food Poisoning, Beijing Research Center for Preventive Medicine, Beijing, 100013, People's Republic of China
| | - Yuan Li
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Laboratory of Food Quality and Safety, China Agricultural University, 100193 Beijing, People's Republic of China
| | - Ghulam Mujtaba Mari
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Laboratory of Food Quality and Safety, China Agricultural University, 100193 Beijing, People's Republic of China
| | - Xuezhi Yu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Laboratory of Food Quality and Safety, China Agricultural University, 100193 Beijing, People's Republic of China
| | - Wenbo Yu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Laboratory of Food Quality and Safety, China Agricultural University, 100193 Beijing, People's Republic of China
| | - Kai Wen
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Laboratory of Food Quality and Safety, China Agricultural University, 100193 Beijing, People's Republic of China
| | - Jianzhong Shen
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Laboratory of Food Quality and Safety, China Agricultural University, 100193 Beijing, People's Republic of China.
| | - Zhanhui Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Laboratory of Food Quality and Safety, China Agricultural University, 100193 Beijing, People's Republic of China.
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7
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Fu HJ, Wang Y, Xiao ZL, Wang H, Li ZF, Shen YD, Lei HT, Sun YM, Xu ZL, Hammock B. A rapid and simple fluorescence enzyme-linked immunosorbent assay for tetrabromobisphenol A in soil samples based on a bifunctional fusion protein. Ecotoxicol Environ Saf 2020; 188:109904. [PMID: 31704326 PMCID: PMC7198468 DOI: 10.1016/j.ecoenv.2019.109904] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2019] [Revised: 10/29/2019] [Accepted: 10/31/2019] [Indexed: 05/20/2023]
Abstract
Tetrabromobisphenol A (TBBPA) is the largest brominated flame retardant which can be released to environment and cause long-term hazard. In this work, we developed a rapid and highly sensitive fluorescence enzyme-linked immunosorbent assay (FELISA) for monitoring of TBBPA in soil samples. TBBPA specific nanobody derived from camelid was fused with alkaline phosphatase to obtain the bi-functional fusion protein, which enable the specific binding of TBBPA and the generation of detection signal simultaneously. The assay showed an IC50 of 0.23 ng g-1, limit detection of 0.05 ng g-1 and linear range from 0.1 to 0.55 ng g-1 for TBBPA in soil samples. Due to the high resistance to organic solvents of the fusion protein, a simple pre-treatment by using 40% dimethyl sulfoxide (DMSO) as extract solvent can eliminate matrix effect and obtain good recoveries (ranging from 93.4% to 112.4%) for spiked soil samples. Good relationship between the results of the proposed FELISA and that of liquid chromatography tandem mass spectrometry (LC-MS/MS) was obtained, which indicated it could be a powerful analytical tool for determination of TBBPA to monitor human and environmental exposure.
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Affiliation(s)
- Hui-Jun Fu
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou, 510642, China.
| | - Yu Wang
- Guangzhou Institute for Food Control, Guangzhou, 510410, China.
| | - Zhi-Li Xiao
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou, 510642, China.
| | - Hong Wang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou, 510642, China.
| | - Zhen-Feng Li
- Guangzhou Institute for Food Control, Guangzhou, 510410, China.
| | - Yu-Dong Shen
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou, 510642, China.
| | - Hong-Tao Lei
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou, 510642, China.
| | - Yuan-Ming Sun
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou, 510642, China.
| | - Zhen-Lin Xu
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou, 510642, China.
| | - Bruce Hammock
- Department of Entomology and UCD Comprehensive Cancer Center, University of California, Davis, CA, 95616, United States.
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Wen J, Zhou S, Yu Z, Chen J, Yang G, Tang J. Decomposable quantum-dots/DNA nanosphere for rapid and ultrasensitive detection of extracellular respiring bacteria. Biosens Bioelectron 2017; 100:469-474. [PMID: 28963964 DOI: 10.1016/j.bios.2017.09.025] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2017] [Revised: 09/12/2017] [Accepted: 09/15/2017] [Indexed: 01/17/2023]
Abstract
Extracellular respiring bacteria (ERB) are a group of bacteria capable of transferring electrons to extracellular acceptors and have important application in environmental remediation. In this study, a decomposable quantum-dots (QDs)/DNA nanosphere probe was developed for rapid and ultrasensitive detection of ERB. The QDs/DNA nanosphere was self-assembled from QDs-streptavidin conjugate (QDs-SA) and Y-shaped DNA nanostructure that is constructed based on toehold-mediated strand displacement. It can release numerous fluorescent QDs-SA in immunomagnetic separation (IMS)-based immunoassay via simple biotin displacement, which remarkably amplifies the signal of antigen-antibody recognizing event. This QDs/DNA-nanosphere-based IMS-fluorescent immunoassay is ultrasensitive for model ERB Shewanella oneidensis, showing a wide detection range between 1.0 cfu/mL and 1.0 × 108 cfu/mL with a low detection limit of 1.37 cfu/mL. Moreover, the proposed IMS-fluorescent immunoassay exhibits high specificity, acceptable reproducibility and stability. Furthermore, the proposed method shows acceptable recovery (92.4-101.4%) for detection of S. oneidensis spiked in river water samples. The proposed IMS-fluorescent immunoassay advances an intelligent strategy for rapid and ultrasensitive quantitation of low-abundance analyte and thus holds promising potential in food, medical and environmental applications.
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Affiliation(s)
- Junlin Wen
- Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Institute of Eco-Environmental Science and Technology, Guangzhou 510650, China
| | - Shungui Zhou
- Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Institute of Eco-Environmental Science and Technology, Guangzhou 510650, China.
| | - Zhen Yu
- Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Institute of Eco-Environmental Science and Technology, Guangzhou 510650, China
| | - Junhua Chen
- Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Institute of Eco-Environmental Science and Technology, Guangzhou 510650, China
| | - Guiqin Yang
- Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Institute of Eco-Environmental Science and Technology, Guangzhou 510650, China
| | - Jia Tang
- Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Institute of Eco-Environmental Science and Technology, Guangzhou 510650, China
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Wang X, Mu Z, Shangguan F, Liu R, Pu Y, Yin L. Rapid and sensitive suspension array for multiplex detection of organophosphorus pesticides and carbamate pesticides based on silica-hydrogel hybrid microbeads. J Hazard Mater 2014; 273:287-292. [PMID: 24769809 DOI: 10.1016/j.jhazmat.2014.03.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2013] [Revised: 02/02/2014] [Accepted: 03/04/2014] [Indexed: 06/03/2023]
Abstract
A technique for multiplex detection of organophosphorus pesticides and carbamate pesticides has been developed using a suspension array based on silica-hydrogel hybrid microbeads (SHHMs). The main advantage of SHHMs, which consist of both silica and hydrogel materials, is that they not only could be distinguished by their characteristic reflection peak originating from the stop-band of the photonic crystal but also have low non-specific adsorption of proteins. Using fluorescent immunoassay, the LODs for fenitrothion, chlorpyrifos-methyl, fenthion, carbaryl and metolcarb were measured to be 0.02ng/mL, 0.012ng/mL, 0.04ng/mL, 0.05ng/mL and 0.1ng/mL, respectively, all of which are much lower than the maximum residue limits, as reported in the European Union pesticides database. All the determination coefficients for these five pesticides were greater than 0.99, demonstrating excellent correlations. The suspension array was specific and had no significant cross-reactivity with other chemicals. The results for the detection of pesticide residues collected from agricultural samples using this method agree well with those from liquid chromatography-tandem mass spectrometry. Our results showed that this simple method is suitable for simultaneous detection of these five pesticides residues in fruits and vegetables.
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Affiliation(s)
- Xuan Wang
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, Jiangsu, China
| | - Zhongde Mu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, Jiangsu, China
| | - Fengqi Shangguan
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, Jiangsu, China
| | - Ran Liu
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, Jiangsu, China
| | - Yuepu Pu
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, Jiangsu, China
| | - Lihong Yin
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, Jiangsu, China.
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