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Wu S, Tian J, Xue X, Ma F, Li QX, Morisseau C, Hammock BD, Xu T. Biosynthesis of magnetosome-nanobody complex in Magnetospirillum gryphiswaldense MSR-1 and a magnetosome-nanobody-based enzyme-linked immunosorbent assay for the detection of tetrabromobisphenol A in water. Anal Bioanal Chem 2024; 416:141-149. [PMID: 37934249 PMCID: PMC10829939 DOI: 10.1007/s00216-023-05005-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Revised: 10/12/2023] [Accepted: 10/13/2023] [Indexed: 11/08/2023]
Abstract
In this study, two mutant strains, TBC and TBC+, able to biosynthesize a novel functional magnetosome-nanobody (Nb), were derived from the magnetotactic bacteria Magnetospirillum gryphiswaldense MSR-1. The magnetosome-Nbs biosynthesized by TBC+ containing multi-copies of the Nb gene had a higher binding ability to an environmental pollutant, tetrabromobisphenol A (TBBPA), than those biosynthesized by TBC containing only one copy of the Nb gene. The magnetosome-Nbs from TBC+ can effectively bind to TBBPA in solutions with high capacity without being affected by a broad range of NaCl and methanol concentrations as well as pH. Therefore, a magnetosome-Nb-based enzyme-linked immunosorbent assay (ELISA) was developed and optimized for the detection of TBBPA, yielding a half-maximum signal inhibition concentration of 0.23 ng/mL and a limit of detection of 0.025 ng/mL. The assay was used to detect TBBPA in spiked river water samples, giving average recoveries between 90 and 120% and coefficients of variation of 2.5-6.3%. The magnetosome-Nb complex could be reused 4 times in ELISA without affecting the performance of the assay. Our results demonstrate the potential of magnetosome-Nbs produced by TBC+ as cost-effective and environment-friendly reagents for immunoassays to detect small molecules in environmental waters.
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Affiliation(s)
- Sha Wu
- Beijing Key Laboratory of Biodiversity and Organic Farming, College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China
- Suzhou Vicheck Biotechnology Co. Ltd., Suzhou, 215128, China
| | - Jiesheng Tian
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Xianle Xue
- Beijing Key Laboratory of Biodiversity and Organic Farming, College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China
- Suzhou Vicheck Biotechnology Co. Ltd., Suzhou, 215128, China
| | - Fengfei Ma
- Beijing Key Laboratory of Biodiversity and Organic Farming, College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China
- Suzhou Vicheck Biotechnology Co. Ltd., Suzhou, 215128, China
| | - Qing X Li
- Department of Molecular Biosciences and Bioengineering, University of Hawaii at Manoa, 1955 East-West Road, Honolulu, HI, 96822, USA
| | - Christophe Morisseau
- Department of Entomology and UCD Comprehensive Cancer Center, University of California, Davis, CA, 95616, USA
| | - Bruce D Hammock
- Department of Entomology and UCD Comprehensive Cancer Center, University of California, Davis, CA, 95616, USA
| | - Ting Xu
- Beijing Key Laboratory of Biodiversity and Organic Farming, College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China.
- Suzhou Vicheck Biotechnology Co. Ltd., Suzhou, 215128, China.
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Shao Y, Wang P, Zheng R, Zhao Z, An J, Hao C, Kang M. Preparation of molecularly imprinted ratiometric fluorescence sensor for visual detection of tetrabromobisphenol A in water samples. Mikrochim Acta 2023; 190:161. [PMID: 36976361 DOI: 10.1007/s00604-023-05745-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Accepted: 03/10/2023] [Indexed: 03/29/2023]
Abstract
A sensitive molecularly imprinted ratiometric fluorescence sensor was constructed for the first time to visually detect tetrabromobisphenol A (TBBPA). The blue fluorescent carbon quantum dots (CQDs) were coated with SiO2 through the reverse microemulsion method to obtain a stable internal reference signal CQDs@SiO2. The ratiometric fluorescence sensor was finally prepared using red fluorescent CdTe QDs as the response signal in the presence of CQDs@SiO2. When the molecularly imprinted polymers were combined with TBBPA, the fluorescence of CdTe QDs (Ex = 365 nm, Em = 665 nm) was rapidly quenched, while that of CQDs (Ex = 365 nm, Em = 441 nm) remained stable, resulting in a noticeable fluorescence color change. Moreover, the fluorescence intensity ratio (I665/I441)0/(I665/I441) of the sensor showed a linear response to TBBPA in the concentration range 0.1 to 10 μM with a low detection limit of 3.8 nM. The prepared sensor was successfully applied to detect TBBPA in water samples. The recoveries were in the range 98.2-103%, with relative standard deviations lower than 2.5%. Furthermore, a fluorescent test strip for visual monitoring of TBBPA was constructed to streamline the procedure. The excellent results demonstrate that the prepared test strip has a broad prospect for the offline detection of pollutants.
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Affiliation(s)
- Yanming Shao
- College of Chemistry and Chemical Engineering, Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry, Ministry of Education, Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi'an, Shaanxi, 710021, People's Republic of China.
| | - Peng Wang
- College of Chemistry and Chemical Engineering, Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry, Ministry of Education, Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi'an, Shaanxi, 710021, People's Republic of China
| | - Rui Zheng
- College of Chemistry and Chemical Engineering, Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry, Ministry of Education, Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi'an, Shaanxi, 710021, People's Republic of China
| | - Zhizhen Zhao
- College of Chemistry and Chemical Engineering, Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry, Ministry of Education, Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi'an, Shaanxi, 710021, People's Republic of China
| | - Jun An
- College of Chemistry and Chemical Engineering, Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry, Ministry of Education, Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi'an, Shaanxi, 710021, People's Republic of China
| | - Caifeng Hao
- College of Chemistry and Chemical Engineering, Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry, Ministry of Education, Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi'an, Shaanxi, 710021, People's Republic of China
| | - Mengyi Kang
- College of Chemistry and Chemical Engineering, Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry, Ministry of Education, Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi'an, Shaanxi, 710021, People's Republic of China
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A Review on Tetrabromobisphenol A: Human Biomonitoring, Toxicity, Detection and Treatment in the Environment. Molecules 2023; 28:molecules28062505. [PMID: 36985477 PMCID: PMC10054480 DOI: 10.3390/molecules28062505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Revised: 02/23/2023] [Accepted: 03/01/2023] [Indexed: 03/12/2023] Open
Abstract
Tetrabromobisphenol A (TBBPA) is a known endocrine disruptor employed in a range of consumer products and has been predominantly found in different environments through industrial processes and in human samples. In this review, we aimed to summarize published scientific evidence on human biomonitoring, toxic effects and mode of action of TBBPA in humans. Interestingly, an overview of various pretreatment methods, emerging detection methods, and treatment methods was elucidated. Studies on exposure routes in humans, a combination of detection methods, adsorbent-based treatments and degradation of TBBPA are in the preliminary phase and have several limitations. Therefore, in-depth studies on these subjects should be considered to enhance the accurate body load of non-invasive matrix, external exposure levels, optimal design of combined detection techniques, and degrading technology of TBBPA. Overall, this review will improve the scientific comprehension of TBBPA in humans as well as the environment, and the breakthrough for treating waste products containing TBBPA.
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Lin WT, How SC, Lin WZ, Chen FH, Liao WC, Ma IC, Wang SSS, Hou SY. Using flow cytometry to develop a competitive assay for the detection of biotin. J Taiwan Inst Chem Eng 2023. [DOI: 10.1016/j.jtice.2023.104691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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Tai J, Qiao D, Huang X, Hu H, Li W, Liang X, Zhang F, Lu Y, Zhang H. Structural Property, Immunoreactivity and Gastric Digestion Characteristics of Glycated Parvalbumin from Mandarin Fish ( Siniperca chuaisi) during Microwave-Assisted Maillard Reaction. Foods 2022; 12:foods12010052. [PMID: 36613268 PMCID: PMC9818276 DOI: 10.3390/foods12010052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 12/08/2022] [Accepted: 12/20/2022] [Indexed: 12/25/2022] Open
Abstract
This study was aimed to investigate the structural and immunological properties of parvalbumin from mandarin fish during the Maillard reaction. The microwave-assisted the Maillard reaction was optimized by orthogonal designed experiments. The results showed that the type of sugar and heating time had a significant effect on the Maillard reaction (p < 0.05). The SDS-PAGE analysis displayed that the molecular weight of parvalbumin in mandarin fish changed after being glycated with the Maillard reaction. The glycated parvalbumin was analyzed by Nano-LC-MS/MS and eleven glycation sites as well as five glycation groups were identified. By using the indirect competitive ELISA method, it was found that microwave heating gave a higher desensitization ability of mandarin fish parvalbumin than induction cooker did. In vitro gastric digestion experiments showed that microwave-heated parvalbumin was proved to be digested more easily than that cooked by induction cookers. The microwave-assisted Maillard reaction modified the structure of parvalbumin and reduced the immunoreactivity of parvalbumin of mandarin fish.
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Affiliation(s)
- Jingjing Tai
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Dan Qiao
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Xue Huang
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Huang Hu
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Wanzheng Li
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Xinle Liang
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Fuming Zhang
- Department of Chemical and Biological Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
| | - Yanbin Lu
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China
- Collaborative Innovation Center of Seafood Deep Processing, Key Laboratory of Aquatic Products Processing of Zhejiang Province, Institute of Seafood, Zhejiang Gongshang University, Hangzhou 310012, China
| | - Hong Zhang
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China
- Correspondence: ; Tel.: +86-138-5800-1588
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Tabatabaei MS, Ahmed M. Enzyme-Linked Immunosorbent Assay (ELISA). METHODS IN MOLECULAR BIOLOGY (CLIFTON, N.J.) 2022; 2508:115-134. [PMID: 35737237 DOI: 10.1007/978-1-0716-2376-3_10] [Citation(s) in RCA: 44] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Enzyme-linked immunosorbent assay (ELISA) is one of the most specific and straightforward assays for detecting biomolecules in research and clinics. With advances in analytical methods, ELISA assay has been constantly optimized to improve its sensitivity, and different types of ELISA are now available to detect various biomarkers. This chapter provides an overall summary of the basic principle of ELISA, discusses different components of ELISA assay, and clearly outline protocols for different types of ELISA assays, including direct, indirect, sandwich, competitive, and nanoparticle-based ELISA.
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Affiliation(s)
| | - Marya Ahmed
- Department of Chemistry, University of Prince Edward Island, Charlottetown, PE, Canada. .,Faculty of Sustainable Design Engineering, University of Prince Edward Island, Charlottetown, PE, Canada.
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Sunday OE, Bin H, Guanghua M, Yao C, Zhengjia Z, Xian Q, Xiangyang W, Weiwei F. Review of the environmental occurrence, analytical techniques, degradation and toxicity of TBBPA and its derivatives. ENVIRONMENTAL RESEARCH 2022; 206:112594. [PMID: 34973196 DOI: 10.1016/j.envres.2021.112594] [Citation(s) in RCA: 54] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 11/08/2021] [Accepted: 12/16/2021] [Indexed: 06/14/2023]
Abstract
BFRs (brominated flame retardants) are a class of compounds that are added to or applied to polymeric materials to avoid or reduce the spread of fire. Tetrabromobisphenol A (TBBPA) is one of the known BFR used many in industries today. Due to its wide application as an additive flame retardant in commodities, TBBPA has become a common indoor contaminant. Recent researches have raised concerns about the possible hazardous effect of exposure to TBBPA and its derivatives in humans and wildlife. This review gives a thorough assessment of the literature on TBBPA and its derivatives, as well as environmental levels and human exposure. Several analytical techniques/methods have been developed for sensitive and accurate analysis of TBBPA and its derivatives in different compartments. These chemicals have been detected in practically every environmental compartment globally, making them a ubiquitous pollutant. TBBPA may be subject to adsorption, biological degradation or photolysis, photolysis after being released into the environment. Treatment of TBBPA-containing waste, as well as manufacturing and usage regulations, can limit the release of these chemicals to the environment and the health hazards associated with its exposure. Several methods have been successfully employed for the treatment of TBBPA including but not limited to adsorption, ozonation, oxidation and anaerobic degradation. Previous studies have shown that TBBPA and its derivative cause a lot of toxic effects. Diet and dust ingestion and have been identified as the main routes of TBBPA exposure in the general population, according to human exposure studies. Toddlers are more vulnerable than adults to be exposed to indoor dust through inadvertent ingestion. Furthermore, TBBP-A exposure can occur during pregnancy and through breast milk. This review will go a long way in closing up the knowledge gap on the silent and over ignored deadly effects of TBBPA and its derivatives and their attendant consequences.
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Affiliation(s)
- Okeke Emmanuel Sunday
- Institute of Environmental Health and Ecological Security, School of Environment and Safety Engineering, Jiangsu University, 212013, PR China; Department of Biochemistry, Faculty of Biological Sciences & Natural Science Unit, SGS, University of Nigeria, Nsukka, 410001, Enugu State, Nigeria
| | - Huang Bin
- Institute of Environmental Health and Ecological Security, School of Environment and Safety Engineering, Jiangsu University, 212013, PR China
| | - Mao Guanghua
- Institute of Environmental Health and Ecological Security, School of Environment and Safety Engineering, Jiangsu University, 212013, PR China
| | - Chen Yao
- Institute of Environmental Health and Ecological Security, School of Environment and Safety Engineering, Jiangsu University, 212013, PR China
| | - Zeng Zhengjia
- Institute of Environmental Health and Ecological Security, School of Environment and Safety Engineering, Jiangsu University, 212013, PR China
| | - Qian Xian
- Institute of Environmental Health and Ecological Security, School of Environment and Safety Engineering, Jiangsu University, 212013, PR China
| | - Wu Xiangyang
- Institute of Environmental Health and Ecological Security, School of Environment and Safety Engineering, Jiangsu University, 212013, PR China.
| | - Feng Weiwei
- Institute of Environmental Health and Ecological Security, School of Environment and Safety Engineering, Jiangsu University, 212013, PR China.
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Wang Y, Xianyu Y. Nanobody and Nanozyme-Enabled Immunoassays with Enhanced Specificity and Sensitivity. SMALL METHODS 2022; 6:e2101576. [PMID: 35266636 DOI: 10.1002/smtd.202101576] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Revised: 01/20/2022] [Indexed: 06/14/2023]
Abstract
Immunoassay as a rapid and convenient method for detecting a variety of targets has attracted tremendous interest with its high specificity and sensitivity. Among the commonly used immunoassays, enzyme-linked immunosorbent assay has been widely used as a gold standard method in various fields that consists of two main components including a recognition element and an enzyme label. With the rapid advances in nanotechnology, nanobodies and nanozymes enable immunoassays with enhanced specificity and sensitivity compared with conventional antibodies and natural enzymes. This review is focused on the applications of nanobodies and nanozymes in immunoassays. Nanobodies advantage lies in their small size, high specificity, mass expression, and high stability. Nanozymes with peroxidase, phosphatase, and oxidase activities and their applications in immunoassays are highlighted and discussed in detail. In addition, the challenges and outlooks in terms of the use of nanobodies and the development of novel nanozymes in practical applications are discussed.
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Affiliation(s)
- Yidan Wang
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China
| | - Yunlei Xianyu
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China
- State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou, Zhejiang, 310058, China
- Ningbo Research Institute, Zhejiang University, Ningbo, Zhejiang, 315100, China
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Yanagisawa H, Sasaki K, Sasaki Y, Omata A, Ichino R, Fujimaki S. Photometric Screening of Tetrabromobisphenol A in Resin Using Iron(III) Nitrate/Hexacyanoferrate(III) Mixture as a Colorimetric Reagent. ANAL SCI 2021; 37:1815-1819. [PMID: 34148922 DOI: 10.2116/analsci.21n021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
This study aims to provide a simple way to identify the possibility of tetrabromobisphenol A (TBBPA) present in polymers without the need for complicated separation with expensive equipment. Since the presence of phenolic hydroxyl groups is known to be identifiable by the reduction of Fe3+ to Fe2+ in a ferric coloring reagent, the possibility of TBBPA being present in a polymer can be screened by a photometric measurement. A mixed solution of iron(III) nitrate and potassium hexacyanide(III) acid was used as a ferric coloring reagent. With this method, the concentration of TBBPA can be estimated from the photometric absorbance corresponding to the depth of the blue color produced by reduction of the ferric reagent in the presence of Fe(NO3)3. The limit of detection (LOD) was determined to be approximately 2 mg/kg using the Student's t-test (99% confidence), and a reproducibility of approximately 3% was determined by the relative standard deviation (RSD) from measurements of calibration samples (n = 7). Furthermore, TBBPA in actual polymer samples was screened without the need for any complex processing steps. Because this colorimetric method measures TBBPA by detecting phenolic groups, it may overestimate the TBBPA concentration in the presence of other similar phenolic substances. Nonetheless, this simple colorimetric method should help to quickly identify the presence of TBBPA in various polymers.
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Lu M, Liang M, Pan J, Zhong Y, Zhang C, Cui X, Wang T, Yan J, Ding J, Zhao S. Development of a Highly Sensitive Biotin-Streptavidin Amplified Enzyme-Linked Immunosorbent Assay for Determination of Progesterone in Milk Samples. FOOD ANAL METHOD 2021. [DOI: 10.1007/s12161-021-02137-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Zhang J, Lv C, Li Z, Guan T, Wang Y, Li T, Zhang T. Interactions of bisphenol diglycidyl ethers with estrogen receptors α: Fluorescence polarization, reporter gene, and molecular modeling investigations. Toxicol Lett 2020; 332:14-19. [DOI: 10.1016/j.toxlet.2020.06.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 06/19/2020] [Accepted: 06/30/2020] [Indexed: 12/11/2022]
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Colorimetric determination of tetrabromobisphenol A based on enzyme-mimicking activity and molecular recognition of metal-organic framework-based molecularly imprinted polymers. Mikrochim Acta 2020; 187:142. [PMID: 31965326 DOI: 10.1007/s00604-020-4119-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Accepted: 01/09/2020] [Indexed: 01/07/2023]
Abstract
A sol-gel method is presented to synthesize molecularly imprinted polymers (MIPs) composed with a copper-based metal-organic framework (referred to as MIP/HKUST-1) on a paper support to selectively recognize tetrabromobisphenol A (TBBPA). The imprinting factor is 7.6 and the maximum adsorption capacity is 187.3 mg g-1. This is much better than data for other MIPs. The degradation of TBBPA is introduced in the procedure. Due to the selective recognition by the MIP, the enzyme-mimicking properties of HKUST-1 under the MIP layer became weak due to the decrease of residue imprinted cavities. And adsorbed TBBPA can be degraded under consumption of hydrogen peroxide (H2O2). The combined effect of H2O2 and HKUST-1 cause the coloration caused by catalytic oxidation of 3,3',5,5'-tetramethylbenzidine to become less distinct. This amplification strategy is used for the ultrasensitive and highly selective colorimetric determination of TBBPA. The gray intensity is proportional to the logarithm concentration of TBBPA in the range of 0.01-10 ng g-1. The limit of detection is as low as 3 pg g-1, and the blank intensities caused by TBBPA analogues are <1% of that caused by TBBPA at the same concentration, this implying excellent selectivity. The spiked recoveries ranged from 94.4 to 106.6% with relative standard deviation values that were no more than 8.6%. Other features include low costs, rapid response, easy operation and on-site testing. Graphical abstractSchematic representation of colorimetric determination of tetrabromobisphenol A (TBBPA) by paper-based metal-organic framework-based molecularly imprinted polymers (MIP/HKUST-1 composites) using 3,3',5,5'-tetramethylbenzidine (TMB) as a substrate.
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MA Z, ZHUANG HS, YANG GX. An Ultrasensitive Real-time Immuno-polymerase Chain Reaction Assay for Detection of Tetrabromobisphenol A in PM2.5 Particles Using Functionalized Nanoprobes. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2019. [DOI: 10.1016/s1872-2040(19)61151-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Sun Z, Lv J, Liu X, Tang Z, Wang X, Xu Y, Hammock BD. Development of a Nanobody-AviTag Fusion Protein and Its Application in a Streptavidin-Biotin-Amplified Enzyme-Linked Immunosorbent Assay for Ochratoxin A in Cereal. Anal Chem 2018; 90:10628-10634. [PMID: 30092629 DOI: 10.1021/acs.analchem.8b03085] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Ochratoxin A (OTA) is a common food contaminant that threatens consumers' safety and health. A sensitive and selective biotin-streptavidin-amplified enzyme-linked immunosorbent assay (BA-ELISA) for OTA using a nanobody-AviTag fusion protein (Nb-AviTag) was developed in this study. The prokaryotic expression vector Nb28-AviTag-pAC6 for Nb-AviTag was constructed, followed by transformation to the AVB101 cells for antibody expression and in vivo biotinylation. The purified Nb28-AviTag was used to establish the BA-ELISA and the procedures for this Nb-AviTag-based BA-ELISA were optimized. The Nb-AviTag-based BA-ELISA exhibited the half maximal inhibitory concentration (IC50) of 0.14 ng mL-1 and the limit of detection (LOD = IC10) of 0.028 ng mL-1 for OTA basing on the optimized experiment parameters. The assay sensitivity was improved 4.6 times and 4.3 times compared to Nb-based ELISA, respectively. This method had LODs of 1.4 μg kg-1 in barley, 0.56 μg kg-1 in oats, and 0.84 μg kg-1 in rice for OTA. The average recovery percent was in a range of 84-137%, and the relative standard derivation percent ranged from 0.64% to 7.8%. The content of OTA in contaminated cereal samples was determined by both the developed Nb-AviTag-based method and liquid chromatography-tandem mass spectrometry (LC-MS/MS). The results demonstrated that the Nb-AviTag was a robust and promising bioreceptor in highly sensitive detection of OTA and other low molecular weight compounds using BA system.
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Affiliation(s)
- Zhichang Sun
- College of Food Science and Technology , Hainan University , 58 Renmin Avenue , Haikou 570228 , P. R. China
| | - Jingwen Lv
- College of Food Science and Technology , Hainan University , 58 Renmin Avenue , Haikou 570228 , P. R. China
| | - Xing Liu
- College of Food Science and Technology , Hainan University , 58 Renmin Avenue , Haikou 570228 , P. R. China
| | - Zongwen Tang
- College of Food Science and Technology , Hainan University , 58 Renmin Avenue , Haikou 570228 , P. R. China
| | - Xuerou Wang
- College of Food Science and Technology , Hainan University , 58 Renmin Avenue , Haikou 570228 , P. R. China
| | - Yang Xu
- State Key Laboratory of Food Science and Technology , Nanchang University , 235 Nanjing East Road , Nanchang 330047 , P. R. China
| | - Bruce D Hammock
- Department of Entomology and Nematology and UCD Comprehensive Cancer Center , University of California , Davis , California 95616 , United States
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Zhang X, Zhuang H, Wan X. Hapten Syntheses, Antibody Generation, and Ultrasensitive Enzyme-Linked Immunosorbent Assay for the Determination of Tonalid in Human Blood. ANAL LETT 2018. [DOI: 10.1080/00032719.2017.1392546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Xiaohan Zhang
- School of Environment Science and Technology, Shanghai Jiao Tong University, Shanghai, People’s Republic of China
| | - Huisheng Zhuang
- School of Environment Science and Technology, Shanghai Jiao Tong University, Shanghai, People’s Republic of China
| | - Xu Wan
- Department of Pharmacy, South Campus, Renji Hospital, Affiliated with the School of Medicine, Shanghai Jiao Tong University, Shanghai, People’s Republic of China
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Zhang X, Zhuang H. Development of an ultrasensitive PCR assay for polycyclic musk determination in fish. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2018; 35:950-958. [PMID: 29346037 DOI: 10.1080/19440049.2018.1429676] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Polycyclic musks (PCMs) in the aquatic environment and organisms have become an emerging environmental issue because of their potential risk. The most used method for polycyclic musk determination is gas chromatography-mass spectrometry (GC-MS) with different sample extractions, which are somewhat expensive to operate, complex and laborious. In this study, a novel and ultrasensitive real-time polymerase chain reaction (PCR) assay with multiple signal amplification of carboxylic-DNA by gold nanoparticle-polyamidoamine conjugation (Au-PAMAM) was developed for determining polycyclic musks in fish. Hapten and immunogen were specially prepared. Polyclonal antibodies were produced based on the optimal immunisation, and the antibodies were characterised. Due to PAMAM's unique nanostructure of numerous functional amino groups, polyclonal antibody and carboxylic-DNA were immobilised by Au-PAMAM conjugation to develop the antibody-Au-PAMAM-DNA probes, which were used as a signal DNA amplifier in the PCR system. Compared with real-time immuno-PCR, this biological probe-amplified immuno-PCR (BPAI-PCR) assay had higher sensitivity due to the probes' higher ratio of signal DNA. Finally, the BPAI-PCR assay was applied to analyse AHTN (7-acetyl-1,1,3,4,4,6-hexamethyl-1,2,3,4-tetrahydronaphthalene,Tonalide) concentrations in fish samples in the range from 1 pg/L to 10 ng/L, giving an of LOD 0.61 pg/L. In general, due to the specificity of the antibody and novel nanoprobe design, this BPAI-PCR assay provided a potential way for trace analysis of AHTN in the aquatic organisms. The high concentrations of AHTN found in cultivated fish should encourage further toxicological studies.
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Affiliation(s)
- Xiaohan Zhang
- a School of Environmental Science and Engineering, Shanghai Jiao Tong University , Shanghai , People's Republic of China
| | - Huisheng Zhuang
- a School of Environmental Science and Engineering, Shanghai Jiao Tong University , Shanghai , People's Republic of China
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17
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Xie W, Lei L, Tian M, Zhang Z, Liu Y. A high-resolution colorimetric immunoassay platform realized by coupling enzymatic multicolor generation with smartphone readout. Analyst 2018; 143:2901-2907. [DOI: 10.1039/c8an00382c] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A high-resolution colorimetric immunoassay platform is developed based on dual enzyme-catalyzed multicolor generation and smartphone-assisted signal readout.
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Affiliation(s)
- Wenyue Xie
- Institute for Clean Energy and Advanced Materials
- Faculty of Materials and Energy
- Southwest University
- Chongqing 400715
- China
| | - Lingli Lei
- Institute for Clean Energy and Advanced Materials
- Faculty of Materials and Energy
- Southwest University
- Chongqing 400715
- China
| | - Meiling Tian
- Institute for Clean Energy and Advanced Materials
- Faculty of Materials and Energy
- Southwest University
- Chongqing 400715
- China
| | - Zeying Zhang
- Institute for Clean Energy and Advanced Materials
- Faculty of Materials and Energy
- Southwest University
- Chongqing 400715
- China
| | - Yingshuai Liu
- Institute for Clean Energy and Advanced Materials
- Faculty of Materials and Energy
- Southwest University
- Chongqing 400715
- China
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18
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Zhang X, Zhuang H. A carbon nanotube-enhanced real-time immuno-PCR for ultrasensitive detection of AHTN in water. Anal Biochem 2017; 544:22-28. [PMID: 29258827 DOI: 10.1016/j.ab.2017.12.024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Revised: 12/13/2017] [Accepted: 12/14/2017] [Indexed: 10/18/2022]
Abstract
Polycyclic musks (PCMs) in the aquatic environment have become an emerging environmental issue because of their potential risk. The most commonly used method for analysis of PCMs is gas chromatography-mass spectrometer (GC-MS) with different sample extractions, which are somewhat expensive to operate, laborious and complex. In this paper, a carbon nanotube-enhanced real time immuno-PCR was developed for ultrasensitive detection of AHTN in water for the first time. The SWCNTs were used to immobilize numerous amino-DNA and polyclonal antibody to form polyclonal antibody-CNTs-DNA conjugates, which were used as a signal-amplifier in the proposed immunoassay system. This proposed carbon nanotube enhanced real time immuno-PCR assay was used to determine AHTN in water samples ranging from 5 pg/L-0.1 ng/L; using sample size as low as 10 μL. This proposed carbon nanotube enhanced real time immuno-PCR is the most ultrasensitive one for determination of AHTN in water without pre-concentration or extractions; and it provide a potential way for ultra-trace AHTN detection in the aquatic environment.
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Affiliation(s)
- Xiaohan Zhang
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Minhang District, Shanghai 200240, People's Republic of China
| | - Huisheng Zhuang
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Minhang District, Shanghai 200240, People's Republic of China.
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19
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Ultrasensitive Nano-rt-iPCR for Determination of Polybrominated Diphenyl Ethers in Natural Samples. Sci Rep 2017; 7:12031. [PMID: 28931875 PMCID: PMC5607242 DOI: 10.1038/s41598-017-12339-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Accepted: 09/06/2017] [Indexed: 12/27/2022] Open
Abstract
Extensive polybrominated diphenyl ethers (PBDEs) use has resulted in its increasingly widespread presence in the environment. PBDEs release from existing products can still persist and accumulate in the environment as well as in human and wildlife magnifying through the food web. Due to its ultra-trace amount in the environment, a novel ultrasensitive nano-rt-iPCR assay has been developed to determine polybrominated diphenyl ethers in natural samples. Numerous amino-DNA and polyclonal antibody (anti-PBDE) were immobilized onto the single-walled carbon nanotubes (SWCNTs) to form antibody-SWCNTs-DNA signal amplifier used in the proposed immunoassay system. Compared with rt-iPCR, this nano-rt-iPCR assay had a higher ratio of signal DNA, which meant higher signal measured and lower detection limit. This proposed nano-rt-iPCR assay was used to determine PBDEs in water samples ranging from 0.5 pg/L to 0.5ng/L; giving the LOD 1 pg/L. To the best of our knowledge, this nano-rt-iPCR is the most sensitive method for PBDEs detection. Because of that, this method needs no pre-concentration or extractions, using sample sizes as low as 10 µL. In general, this nano-rt-iPCR method will be a useful and potential way for batch detection of ultra-trace PBDEs in the aquatic environment.
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20
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Xu S, Ouyang W, Xie P, Lin Y, Qiu B, Lin Z, Chen G, Guo L. Highly Uniform Gold Nanobipyramids for Ultrasensitive Colorimetric Detection of Influenza Virus. Anal Chem 2017; 89:1617-1623. [PMID: 28208287 DOI: 10.1021/acs.analchem.6b03711] [Citation(s) in RCA: 157] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Gold nanoparticles (AuNPs) have been frequently utilized for the construction of diverse colorimetric biosensors. Normally, AuNPs with sharp edges could have better sensitivity. However, the poor monodipersity of AuNPs with sharp edges seriously confines their utility for colorimetric biosensing. Herein, we demonstrate the utility of highly uniform gold nanobipyramids (Au NBPs) for ultrasensitive colorimetric detection of H5N1 virus. The proposed method is based on the fact that alkaline phosphatase (ALP) could catalyze the decomposition of 4-aminophenyl phosphate (4-APP) to generate 4-aminophenol (4-AP), which would then reduce silver nitrate to metal silver and then deposited on Au NBPs. The metal silver shell coated on the Au NBPs changed the refractive index of gold and thus resulted in a blue shift of longitudinal localized surface plasmon resonance (LSPR) and accompanied a vivid color change. This method exhibited a higher sensitivity than that of other Au NPs such as gold nanorods due to the high-index-faceted on the tips of the Au NBPs. This method was used to detect the activity of ALP. It exhibited a linear range of 0.1-5 mU/mL with a limit of detection (LOD) of 0.086 mU/mL. Finally, the proposed method was used in immunoassay to detect H5N1 virus. The results showed that the corresponding linear range for the detection of H5N1 virus antigen was 0.001-2.5 ng/mL, and the LOD was determined to be 1 pg/mL, which is more sensitive than those in most of the colorimetric biosensors reported previously.
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Affiliation(s)
- Shaohua Xu
- Institute of Nanomedicine and Nanobiosensing, Ministry of Education Key Laboratory of Analysis and Detection for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University , Fuzhou, 350116, China
| | - Wenjun Ouyang
- Institute of Nanomedicine and Nanobiosensing, Ministry of Education Key Laboratory of Analysis and Detection for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University , Fuzhou, 350116, China
| | - Peisi Xie
- Institute of Nanomedicine and Nanobiosensing, Ministry of Education Key Laboratory of Analysis and Detection for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University , Fuzhou, 350116, China
| | - Yi Lin
- Institute of Nanomedicine and Nanobiosensing, Ministry of Education Key Laboratory of Analysis and Detection for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University , Fuzhou, 350116, China
| | - Bin Qiu
- Institute of Nanomedicine and Nanobiosensing, Ministry of Education Key Laboratory of Analysis and Detection for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University , Fuzhou, 350116, China
| | - Zhenyu Lin
- Institute of Nanomedicine and Nanobiosensing, Ministry of Education Key Laboratory of Analysis and Detection for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University , Fuzhou, 350116, China
| | - Guonan Chen
- Institute of Nanomedicine and Nanobiosensing, Ministry of Education Key Laboratory of Analysis and Detection for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University , Fuzhou, 350116, China
| | - Longhua Guo
- Institute of Nanomedicine and Nanobiosensing, Ministry of Education Key Laboratory of Analysis and Detection for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University , Fuzhou, 350116, China
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21
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Synergetic signal amplification of multi-walled carbon nanotubes-Fe 3O 4 hybrid and trimethyloctadecylammonium bromide as a highly sensitive detection platform for tetrabromobisphenol A. Sci Rep 2016; 6:38000. [PMID: 27897238 PMCID: PMC5126559 DOI: 10.1038/srep38000] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Accepted: 11/04/2016] [Indexed: 01/25/2023] Open
Abstract
In this work, we fabricated an electrochemical sensor based on trimethyloctadecylammonium bromide and multi-walled carbon nanotubes-Fe3O4 hybrid (TOAB/MWCNTs-Fe3O4) for sensitive detection of tetrabromobisphenol A (TBBPA). The nanocomposite was characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and Fourier transform infrared spectroscopy (FT-IR) techniques. The electrochemical behaviors of TBBPA on TOAB/MWCNTs-Fe3O4 composite film modified glassy carbon electrode (GCE) were investigated by cyclic voltammetry (CV), differential pulse voltammetry (DPV) and electrochemical impedance spectroscopy (EIS) method. The experimental results indicated that the incorporation of MWCNTs-Fe3O4 with TOAB greatly enhanced the electrochemical response of TBBPA. This fabricated sensor displayed excellent analytical performance for TBBPA detection over a range from 3.0 nM to 1000.0 nM with a detection limit of 0.73 nM (S/N = 3). Moreover, the proposed electrochemical sensor exhibited good reproducibility and stability, and could be successfully applied to detect TBBPA in water samples with satisfactory results.
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22
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Recent advances in the analysis of TBBPA/TBBPS, TBBPA/TBBPS derivatives and their transformation products. Trends Analyt Chem 2016. [DOI: 10.1016/j.trac.2016.06.021] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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23
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Chen X, Wang Y, Tong J, Xia S, Zhou Y, Wu K. Electrochemical sensing platform for tetrabromobisphenol A at pM level based on the synergetic enhancement effects of graphene and dioctadecyldimethylammonium bromide. Anal Chim Acta 2016; 935:90-6. [DOI: 10.1016/j.aca.2016.06.052] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Revised: 06/28/2016] [Accepted: 06/30/2016] [Indexed: 11/29/2022]
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24
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Abou-Elwafa Abdallah M. Environmental occurrence, analysis and human exposure to the flame retardant tetrabromobisphenol-A (TBBP-A)-A review. ENVIRONMENT INTERNATIONAL 2016; 94:235-250. [PMID: 27266836 DOI: 10.1016/j.envint.2016.05.026] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Revised: 05/25/2016] [Accepted: 05/25/2016] [Indexed: 05/22/2023]
Abstract
TBBP-A is a high production volume chemical applied widely as a flame retardant in printed circuit boards. Recent studies have raised concern over potential harmful implications of TBBP-A exposure in human and wildlife, leading to its classification under group 2A "Probably carcinogenic to humans" by the International Agency for Research on Cancer. This article provides a comprehensive review of the available literature on TBBP-A analysis, environmental levels and human exposure. Liquid chromatography-tandem mass spectrometry (LC-MS/MS) has been identified as the method of choice for robust, accurate and sensitive analysis of TBBP-A in different matrices. TBBP-A has been detected in almost all environmental compartments all over the world, rendering it a ubiquitous contaminant. Human exposure studies revealed dust ingestion and diet as the major pathways of TBBP-A exposure in the general population. Toddlers are likely to be more exposed than adults via accidental indoor dust ingestion. Moreover, exposure to TBBP-A may occur prenatally and via breast milk. There are no current restrictions on the production of TBBP-A in the EU or worldwide. However, more research is required to characterise human exposure to TBBP-A in and around production facilities, as well as in e-waste recycling regions.
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Affiliation(s)
- Mohamed Abou-Elwafa Abdallah
- Division of Environmental Health and Risk Management, College of Life and Environmental Sciences, University of Birmingham, Birmingham B15 2TT, United Kingdom; Department of Analytical Chemistry, Faculty of Pharmacy, Assiut University, 71526 Assiut, Egypt.
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25
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Determination of porcine gelatin in edible bird's nest by competitive indirect ELISA based on anti-peptide polyclonal antibody. Food Control 2016. [DOI: 10.1016/j.foodcont.2015.06.039] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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26
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Yu L, Liu L, Song S, Kuang H, Xu C. Development of an immunochromatographic test strip and ic-ELISA for tetrabromobisphenol: a detection in lake water and rice pudding samples. FOOD AGR IMMUNOL 2015. [DOI: 10.1080/09540105.2015.1126234] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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27
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Tukiran NA, Ismail A, Mustafa S, Hamid M. Development of antipeptide enzyme-linked immunosorbent assay for determination of gelatin in confectionery products. Int J Food Sci Technol 2015. [DOI: 10.1111/ijfs.12971] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Nur Azira Tukiran
- Laboratory of Halal Science Research; Halal Products Research Institute; Universiti Putra Malaysia (UPM); 43400 Serdang Selangor Malaysia
- International Institute for Halal Research and Training (INHART); International Islamic University Malaysia (IIUM); P.O. Box 10 50728 Kuala Lumpur Malaysia
| | - Amin Ismail
- Laboratory of Halal Science Research; Halal Products Research Institute; Universiti Putra Malaysia (UPM); 43400 Serdang Selangor Malaysia
- Department of Nutrition and Dietetics; Faculty of Medicine and Health Sciences; Universiti Putra Malaysia (UPM); 43400 Serdang Selangor Malaysia
| | - Shuhaimi Mustafa
- Laboratory of Halal Science Research; Halal Products Research Institute; Universiti Putra Malaysia (UPM); 43400 Serdang Selangor Malaysia
- Department of Microbiology; Faculty of Biotechnology and Biomolecular Sciences; Universiti Putra Malaysia (UPM); 43400 Serdang Selangor Malaysia
| | - Muhajir Hamid
- Department of Microbiology; Faculty of Biotechnology and Biomolecular Sciences; Universiti Putra Malaysia (UPM); 43400 Serdang Selangor Malaysia
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28
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Wang J, Majkova Z, Bever CRS, Yang J, Gee SJ, Li J, Xu T, Hammock BD. One-step immunoassay for tetrabromobisphenol a using a camelid single domain antibody-alkaline phosphatase fusion protein. Anal Chem 2015; 87:4741-8. [PMID: 25849972 DOI: 10.1021/ac504735p] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Tetrabromobisphenol A (TBBPA) is a ubiquitous brominated flame retardant, showing widespread environmental and human exposures. A variable domain of the heavy chain antibody (VHH), naturally occurring in camelids, approaches the lower size limit of functional antigen-binding entities. The ease of genetic manipulation makes such VHHs a superior choice to use as an immunoreagent. In this study, a highly selective anti-TBBPA VHH T3-15 fused with alkaline phosphatase (AP) from E. coli was expressed, showing both an integrated TBBPA-binding capacity and enzymatic activity. A one-step immunoassay based on the fusion protein T3-15-AP was developed for TBBPA in 5% dimethyl sulfoxide (DMSO)/phosphate buffered saline (PBS, pH 7.4), with a half-maximum signal inhibition concentration (IC50) of 0.20 ng mL(-1). Compared to the parental VHH T3-15, T3-15-AP was able to bind to a wider variety of coating antigens and the assay sensitivity was slightly improved. Cross-reactivity of T3-15-AP with a set of important brominated analogues was negligible (<0.1%). Although T3-15-AP was susceptible to extreme heat (90 °C), much higher binding stability at ambient temperature was observed in the T3-15-AP-based assay for at least 70 days. A simple pretreatment method of diluting urine samples with DMSO was developed for a one-step assay. The recoveries of TBBPA from urine samples via this one-step assay ranged from 96.7% to 109.9% and correlated well with a high-performance liquid chromatography-tandem mass spectroscopy (HPLC-MS/MS) method. It is expected that the dimerized fusion protein, VHH-AP, will show promising applications in human exposure and environmental monitoring.
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Affiliation(s)
- Jia Wang
- †Beijing Key Laboratory of Biodiversity and Organic Farming, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China.,§College of Food Science and Technology, Huazhong Agricultural Universiy, Wuhan 430070, China
| | - Zuzana Majkova
- ‡Department of Entomology and UCD Comprehensive Cancer Center, University of California, Davis, California 95616, United States
| | - Candace R S Bever
- ‡Department of Entomology and UCD Comprehensive Cancer Center, University of California, Davis, California 95616, United States
| | - Jun Yang
- ‡Department of Entomology and UCD Comprehensive Cancer Center, University of California, Davis, California 95616, United States
| | - Shirley J Gee
- ‡Department of Entomology and UCD Comprehensive Cancer Center, University of California, Davis, California 95616, United States
| | - Ji Li
- †Beijing Key Laboratory of Biodiversity and Organic Farming, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
| | - Ting Xu
- †Beijing Key Laboratory of Biodiversity and Organic Farming, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
| | - Bruce D Hammock
- ‡Department of Entomology and UCD Comprehensive Cancer Center, University of California, Davis, California 95616, United States
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29
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Chen X, Zheng M, Zhou Y, Tong J, Wu K. Electrochemical enhancement of acetylene black film as sensitive sensing platform for toxic tetrabromobisphenol A. RSC Adv 2015. [DOI: 10.1039/c5ra24040a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A sensitive and rapid electrochemical method was developed for TBBPA based on enhancement effects of acetylene black particles.
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Affiliation(s)
- Xuerong Chen
- Key Lab of Environment and Health
- School of Public Health
- Ministry of Education
- Tongji Medical College
- Huazhong University of Science and Technology
| | - Meng Zheng
- Key Laboratory for Material Chemistry of Energy Conversion and Storage
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
| | - Yikai Zhou
- Key Lab of Environment and Health
- School of Public Health
- Ministry of Education
- Tongji Medical College
- Huazhong University of Science and Technology
| | - Jianhua Tong
- State Key Laboratory of Transducer Technology
- Institute of Electronics
- Chinese Academy of Science
- Beijing 100190
- China
| | - Kangbing Wu
- Key Laboratory for Material Chemistry of Energy Conversion and Storage
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
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30
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Xu R, Tang R, Liu S, Li F, Zhang B. An environmentally-friendly enzyme-based nanofibrous membrane for 3,3′,5,5′-tetrabromobisphenol removal. RSC Adv 2015. [DOI: 10.1039/c5ra09090c] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Immobilization of HRP on NCC-incorporated CS/PVA membranes and its application in TBBPA removal.
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Affiliation(s)
- Ran Xu
- State Key Laboratory of Pollution Control and Resource Reuse
- College of Environmental Science and Engineering
- Tongji University
- Shanghai 200092
- PR China
| | - Rongzhi Tang
- State Key Laboratory of Pollution Control and Resource Reuse
- College of Environmental Science and Engineering
- Tongji University
- Shanghai 200092
- PR China
| | - Sijia Liu
- State Key Laboratory of Pollution Control and Resource Reuse
- College of Environmental Science and Engineering
- Tongji University
- Shanghai 200092
- PR China
| | - Fengting Li
- State Key Laboratory of Pollution Control and Resource Reuse
- College of Environmental Science and Engineering
- Tongji University
- Shanghai 200092
- PR China
| | - Bingru Zhang
- State Key Laboratory of Pollution Control and Resource Reuse
- College of Environmental Science and Engineering
- Tongji University
- Shanghai 200092
- PR China
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31
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Bu D, Zhuang H, Zhou X, Yang G. A heterogeneous biotin–streptavidin-amplified enzyme-linked immunosorbent assay for detecting tris(2,3-dibromopropyl) isocyanurate in natural samples. Anal Biochem 2014; 462:51-9. [DOI: 10.1016/j.ab.2014.06.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2014] [Revised: 05/14/2014] [Accepted: 06/03/2014] [Indexed: 12/25/2022]
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32
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Wang J, Bever CS, Majkova Z, Dechant JE, Yang J, Gee SJ, Xu T, Hammock BD. Heterologous antigen selection of camelid heavy chain single domain antibodies against tetrabromobisphenol A. Anal Chem 2014; 86:8296-302. [PMID: 25068372 PMCID: PMC4139172 DOI: 10.1021/ac5017437] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2014] [Accepted: 07/28/2014] [Indexed: 12/14/2022]
Abstract
Tetrabromobisphenol A (TBBPA) is a ubiquitous flame retardant. A high-throughput immunoassay would allow for monitoring of human and environmental exposures as a part of risk assessment. Naturally occurring antibodies in camelids that are devoid of light chain, show great promise as an efficient tool in monitoring environmental contaminants, but they have been rarely used for small molecules. An alpaca was immunized with a TBBPA hapten coupled to thyroglobulin and a variable domain of heavy chain antibody (VHH) T3-15 highly selective for TBBPA was isolated from a phage displayed VHH library using heterologous coating antigens. Compared to the VHHs isolated using homologous antigens, VHH T3-15 had about a 10-fold improvement in sensitivity in an immunoassay. This assay, under the optimized conditions of 10% methanol in the assay buffer (pH 7.4), had an IC50 for TBBPA of 0.40 ng mL(-1) and negligible cross reactivity (<0.1%) with other tested analogues. After heating the VHH at 90 °C for 90 min about 20% of the affinity for coating antigen T3-BSA remained. The recoveries of TBBPA from spiked soil and fetal bovine serum samples ranged from 90.3% to 110.7% by ELISA and agreed well with a liquid chromatography-tandem mass spectrometry method. We conclude the many advantages of VHH make them attractive for the development of immunoassays to small molecules.
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Affiliation(s)
- Jia Wang
- College of Resources and Environmental
Sciences, Beijing Key Laboratory
of Biodiversity
and Organic Farming, China Agricultural
University, Beijing 100193, P.R. China
| | - Candace
R. S. Bever
- Department
of Entomology and UCD Comprehensive Cancer Center, Department of Surgical
and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, California 95616, United States
| | - Zuzana Majkova
- Department
of Entomology and UCD Comprehensive Cancer Center, Department of Surgical
and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, California 95616, United States
| | - Julie E. Dechant
- Department
of Entomology and UCD Comprehensive Cancer Center, Department of Surgical
and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, California 95616, United States
| | - Jun Yang
- Department
of Entomology and UCD Comprehensive Cancer Center, Department of Surgical
and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, California 95616, United States
| | - Shirley J. Gee
- Department
of Entomology and UCD Comprehensive Cancer Center, Department of Surgical
and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, California 95616, United States
| | - Ting Xu
- College of Resources and Environmental
Sciences, Beijing Key Laboratory
of Biodiversity
and Organic Farming, China Agricultural
University, Beijing 100193, P.R. China
| | - Bruce D. Hammock
- Department
of Entomology and UCD Comprehensive Cancer Center, Department of Surgical
and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, California 95616, United States
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