1
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Han S, Yang Y, Chen T, Yang B, Ding M, Wen H, Xiao J, Cheng G, Tao Y, Hao H, Peng D. Quantitative Determination of Aflatoxin B 1 in Maize and Feed by ELISA and Time-Resolved Fluorescent Immunoassay Based on Monoclonal Antibodies. Foods 2024; 13:319. [PMID: 38275686 PMCID: PMC10815167 DOI: 10.3390/foods13020319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Revised: 01/14/2024] [Accepted: 01/15/2024] [Indexed: 01/27/2024] Open
Abstract
In this study, a highly sensitive monoclonal antibody (mAb) was developed for the detection of aflatoxin B1 (AFB1) in maize and feed. Additionally, indirect competitive enzyme-linked immunosorbent assay (ic-ELISA) and time-resolved fluorescence immunoassay assay (TRFICA) were established. Firstly, the hapten AFB1-CMO was synthesized and conjugated with carrier proteins to prepare the immunogen for mouse immunization. Subsequently, mAb was generated using the classical hybridoma technique. The lowest half-maximal inhibitory concentration (IC50) of ic-ELISA was 38.6 ng/kg with a linear range of 6.25-100 ng/kg. The limits of detections (LODs) were 6.58 ng/kg and 5.54 ng/kg in maize and feed, respectively, with the recoveries ranging from 72% to 94%. The TRFICA was developed with a significantly reduced detection time of only 21 min, from sample processing to reading. Additionally, the limits of detection (LODs) for maize and feed were determined to be 62.7 ng/kg and 121 ng/kg, respectively. The linear ranges were 100-4000 ng/kg, with the recoveries ranging from 90% to 98%. In conclusion, the development of AFB1 mAb and the establishment of ic-ELISA for high-throughput sample detection, as well as TRFICA for rapid detection presented robust tools for versatile AFB1 detection in different scenarios.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Dapeng Peng
- State Key Laboratory of Agricultural Microbiology, National Reference Laboratory of Veterinary Drug Residues (HZAU) and MOA Key Laboratory for Detection of Veterinary Drug Residues, Huazhong Agricultural University, Wuhan 430070, China; (S.H.); (Y.Y.); (T.C.); (B.Y.); (M.D.); (H.W.); (J.X.); (G.C.); (Y.T.); (H.H.)
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2
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Zhao L, Chen J, Tian L, Zhang Y, Chen L, Du X, Ma M, Li J, Meng Q, Li C. Supramolecular Detoxification of Macromolecular Biotoxin through the Complexation by a Large-Sized Macrocycle. Adv Healthc Mater 2022; 11:e2200270. [PMID: 35543330 DOI: 10.1002/adhm.202200270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 04/19/2022] [Indexed: 11/10/2022]
Abstract
Biotoxins are diverse, complex, and hypertoxic, ultimately serving as grave and lasting menaces to humanity. Here, it is aimed to introduce a new detoxification methodology for macromolecular biotoxin through complexation by a very large macrocycle. A 25-mer peptide isolated from Lycosa erythrognatha spider venom (LyeTxI) is selected as the model macromolecular biotoxin. Quaterphen[4]arene, with a side length of ≈1.6 nm, has a sufficient cavity to bind LyeTxI. Hence, the water-soluble derivative of Quaterphen[4]arene (H) is designed and synthesized. H exhibits an overall host-guest complexation toward LyeTxI, resulting in a considerably high association constant of (7.01 ± 0.18) × 107 m-1 . This encapsulation of peptide is interesting as traditional macrocycles can only engulf the amino acid residues of peptides due to their limited cavity size. In vitro assay verifies that complexation by H inhibits the interactions of LyeTxI with cell membranes, thereby reducing its cytotoxicity, suppressing hemolysis, and decreasing the release of lactate dehydrogenase. Notably, the intravenous administration of H has a significant therapeutic effect on LyeTxI-poisoned mice, alleviating inflammation and tissue damage, and markedly improving the survival rate from 10% to 80%. An efficient and potentially versatile approach is provided to detoxify macromolecular biotoxins, with giant macrocycle serving as an antidote.
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Affiliation(s)
- Liang Zhao
- Center for Supramolecular Chemistry and Catalysis Department of Chemistry Shanghai University Shanghai 200444 P. R. China
- State Key Laboratory of Toxicology and Medical Countermeasures Beijing Institute of Pharmacology and Toxicology Beijing 100850 P. R. China
| | - Junyi Chen
- State Key Laboratory of Toxicology and Medical Countermeasures Beijing Institute of Pharmacology and Toxicology Beijing 100850 P. R. China
- Key Laboratory of Inorganic‐Organic Hybrid Functional Material Chemistry Ministry of Education Tianjin Key Laboratory of Structure and Performance for Functional Molecules College of Chemistry Tianjin Normal University Tianjin 300387 P. R. China
| | - Long Tian
- State Key Laboratory of Toxicology and Medical Countermeasures Beijing Institute of Pharmacology and Toxicology Beijing 100850 P. R. China
| | - Yahan Zhang
- State Key Laboratory of Toxicology and Medical Countermeasures Beijing Institute of Pharmacology and Toxicology Beijing 100850 P. R. China
| | - Longming Chen
- State Key Laboratory of Toxicology and Medical Countermeasures Beijing Institute of Pharmacology and Toxicology Beijing 100850 P. R. China
| | - Xinbei Du
- Center for Supramolecular Chemistry and Catalysis Department of Chemistry Shanghai University Shanghai 200444 P. R. China
- State Key Laboratory of Toxicology and Medical Countermeasures Beijing Institute of Pharmacology and Toxicology Beijing 100850 P. R. China
| | - Mengke Ma
- State Key Laboratory of Toxicology and Medical Countermeasures Beijing Institute of Pharmacology and Toxicology Beijing 100850 P. R. China
| | - Jian Li
- Center for Supramolecular Chemistry and Catalysis Department of Chemistry Shanghai University Shanghai 200444 P. R. China
- School of Chemistry and Chemical Engineering Henan Normal University Xinxiang Henan 453007 P. R. China
| | - Qingbin Meng
- State Key Laboratory of Toxicology and Medical Countermeasures Beijing Institute of Pharmacology and Toxicology Beijing 100850 P. R. China
| | - Chunju Li
- Key Laboratory of Inorganic‐Organic Hybrid Functional Material Chemistry Ministry of Education Tianjin Key Laboratory of Structure and Performance for Functional Molecules College of Chemistry Tianjin Normal University Tianjin 300387 P. R. China
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3
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Xu C, Yu M, Xie Y, Zhong J, Chen W, Lin M, Hu X, Shen Y. Screening and identification of vancomycin anti-idiotypic antibodies for against Staphylococcus aureus from a human phage display domain antibody library. Immunol Lett 2022; 246:1-9. [DOI: 10.1016/j.imlet.2022.04.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 04/26/2022] [Accepted: 04/28/2022] [Indexed: 11/25/2022]
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4
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Zou R, Guo Y, Chen Y, Zhao Y, Zhao L, Zhu G, Liu Y, Peters J, Guo Y. Computer-aided profiling of a unique broad-specific antibody and its application to an ultrasensitive fluoroimmunoassay for five N-methyl carbamate pesticides. JOURNAL OF HAZARDOUS MATERIALS 2022; 426:127845. [PMID: 34865894 DOI: 10.1016/j.jhazmat.2021.127845] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 11/09/2021] [Accepted: 11/16/2021] [Indexed: 05/08/2023]
Abstract
Pollution of N-methyl carbamate (NMC) pesticides is threatening the non-target organisms' survival. Thus, broad-specific antibodies and class-selective immunoassays are demanding for multiple NMCs determination. In this study, we employed a molecular docking-based virtual screening strategy to fast profile antibody spectrum, based on a designed chemical pool containing 17 compounds. A monoclonal antibody (mAb)-6G against carbofuran was used as the objective. The recombinant full-length IgG was successfully expressed to validate the antibody sequences for homology modeling. After docking, we manually categorized the antibody-chemical binding strength into three groups. Non-competitive surface plasmon resonance (SPR) demonstrated the mAb-6G affinitive binding toward five NMCs (carbofuran, isoprocarb, propoxur, carbaryl and carbosulfan), which were classified into strong and moderate binding categories. Antibody binding properties were confirmed again by ic-ELISA and lateral flow immunochromatographic strip. Subsequently, an ultrasensitive indirect competitive fluoromicrosphere-based immunoassay (ic-FMIA) was established with the IC50 (half-maximal inhibitory concentration) values of 0.08-3.37 ng/mL. This portable assay presented a 30-230-fold improved sensitivity than traditional ic-ELISA and was applied in European surface water analysis. Overall, our work provides an efficient platform integrating in-silico and experimental methodologies to accelerate the characterization of hapten-specific antibody binding properties and the development of high-sensitive immunoassays for multi-pollutants monitoring.
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Affiliation(s)
- Rubing Zou
- Institute of Pesticide and Environmental Toxicology, Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, Hangzhou 310058, China; Wageningen Food Safety Research, Akkermaalsbos 2, 6708 WB Wageningen, the Netherlands
| | - Yuanhao Guo
- Institute of Pesticide and Environmental Toxicology, Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, Hangzhou 310058, China
| | - Yang Chen
- Institute of Pesticide and Environmental Toxicology, Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, Hangzhou 310058, China
| | - Ying Zhao
- Institute of Pesticide and Environmental Toxicology, Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, Hangzhou 310058, China
| | - Li Zhao
- Shanghai Agricultural Technology Extension Service Center, Shanghai 201103, China
| | - Guonian Zhu
- Institute of Pesticide and Environmental Toxicology, Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, Hangzhou 310058, China
| | - Yihua Liu
- Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou 311400, China
| | - Jeroen Peters
- Wageningen Food Safety Research, Akkermaalsbos 2, 6708 WB Wageningen, the Netherlands
| | - Yirong Guo
- Institute of Pesticide and Environmental Toxicology, Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, Hangzhou 310058, China.
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5
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Enhancing the detection sensitivity of nanobody against aflatoxin B 1 through structure-guided modification. Int J Biol Macromol 2022; 194:188-197. [PMID: 34863829 DOI: 10.1016/j.ijbiomac.2021.11.182] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 11/25/2021] [Accepted: 11/26/2021] [Indexed: 11/24/2022]
Abstract
Nanobodies (Nbs) have shown great potential in immunodetection of small-molecule contaminants in food and environmental monitoring. However, the limited knowledge of the mechanism of Nbs binding to small molecules has hampered the development of high-affinity Nbs and assay improvement. We previously reported two homologous nanobodies Nb26 and Nb28 specific to aflatoxin B1 (AFB1), with the former exhibiting higher sensitivity in ELISA. Herein, Nb26 was selected as the model antibody to resolve its solution nuclear magnetic resonance (NMR) structure, and investigate its AFB1 recognition mechanism. The results revealed that Nb26 exhibits a typical immunoglobulin fold and its AFB1-binding interface is uniquely located in complementarity-determining region 3 (CDR3) and framework region 2 (FR2). This finding was applied to improve the binding activity of Nb28 against AFB1 by constructing two Nb28-based mutants A50V and S102D, resulting in 2.3- and 3.3-fold sensitivity enhancement over the wild type, respectively. This study develops an NMR-based strategy to analyze the underlying mechanism of Nb against AFB1, and successfully generated two site-modified Nbs with improved detection sensitivity. It is believed that this work could greatly expand the applications of Nbs by providing a way to enhance the binding activity.
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6
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Yan T, Zhu J, Li Y, He T, Yang Y, Liu M. Development of a biotinylated nanobody for sensitive detection of aflatoxin B 1 in cereal via ELISA. Talanta 2021; 239:123125. [PMID: 34920257 DOI: 10.1016/j.talanta.2021.123125] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Revised: 11/29/2021] [Accepted: 12/01/2021] [Indexed: 01/23/2023]
Abstract
Aflatoxin B1 (AFB1) contamination is a severe threat to food safety and human health, and requires continuous monitoring. In this study, we developed a biotin-streptavidin-amplified enzyme-linked immunosorbent assay (BA-ELISA) by using biotinylated nanobody Nb26 and streptavidin-conjugated polymerized horseradish peroxide (SA-PolyHRP) for sensitive and rapid detection of AFB1 in cereal. Under the optimal condition, the IC50 value of the BA-ELISA was improved to 0.21 ng mL-1 for AFB1, satisfying the requirement of detection limit in practical applications. The total assay time of our strategy is reduced to 50 min from 2 h in conventional competitive ELISA. Additionally, the BA-ELISA saves as much as 98% of the antibody in comparison to the previous classic ELISA. Our work also demonstrated an interesting phenomenon that the biotinylated Nb26 achieved better selectivity to AFB1, which could possibly result from the steric hindrance that interferes reaction between the Nb26 and the AFB1 analogs. Furthermore, the assay was used to detect AFB1 in two cereal samples, and the results were in good agreement with that obtained by high performance liquid chromatography. The developed BA-ELISA can be used for routine screening analysis of AFB1, and offers a promising strategy for measuring low concentrations of food contaminants.
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Affiliation(s)
- Tingting Yan
- State Key Laboratory of Magnetic Resonance and Atomic Molecular Physics, Key Laboratory of Magnetic Resonance in Biological Systems, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences - Wuhan National Laboratory for Optoelectronics, Hubei Optics Valley Laboratory, Wuhan, 430071, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jiang Zhu
- State Key Laboratory of Magnetic Resonance and Atomic Molecular Physics, Key Laboratory of Magnetic Resonance in Biological Systems, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences - Wuhan National Laboratory for Optoelectronics, Hubei Optics Valley Laboratory, Wuhan, 430071, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Ying Li
- State Key Laboratory of Magnetic Resonance and Atomic Molecular Physics, Key Laboratory of Magnetic Resonance in Biological Systems, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences - Wuhan National Laboratory for Optoelectronics, Hubei Optics Valley Laboratory, Wuhan, 430071, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Ting He
- State Key Laboratory of Magnetic Resonance and Atomic Molecular Physics, Key Laboratory of Magnetic Resonance in Biological Systems, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences - Wuhan National Laboratory for Optoelectronics, Hubei Optics Valley Laboratory, Wuhan, 430071, China.
| | - Yunhuang Yang
- State Key Laboratory of Magnetic Resonance and Atomic Molecular Physics, Key Laboratory of Magnetic Resonance in Biological Systems, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences - Wuhan National Laboratory for Optoelectronics, Hubei Optics Valley Laboratory, Wuhan, 430071, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Maili Liu
- State Key Laboratory of Magnetic Resonance and Atomic Molecular Physics, Key Laboratory of Magnetic Resonance in Biological Systems, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences - Wuhan National Laboratory for Optoelectronics, Hubei Optics Valley Laboratory, Wuhan, 430071, China; University of Chinese Academy of Sciences, Beijing, 100049, China
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7
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Wang Z, Luo P, Zheng B. A Rapid and Sensitive Fluorescent Microsphere-Based Lateral Flow Immunoassay for Determination of Aflatoxin B1 in Distillers' Grains. Foods 2021; 10:foods10092109. [PMID: 34574219 PMCID: PMC8468960 DOI: 10.3390/foods10092109] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 08/31/2021] [Accepted: 09/01/2021] [Indexed: 12/20/2022] Open
Abstract
Aflatoxin B1 (AFB1) is a toxic compound naturally produced by the genera Aspergillus. Distillers' grains can be used as animal feed since they have high content of crude protein and other nutrients. However, they are easily contaminated by mycotoxins, and currently there are no rapid detection methods for AFB1 in distillers' grains. In this study, a lateral flow immunoassay (LFIA) based on red fluorescent microsphere (FM), is developed for quantitative detection of AFB1 in distillers' grains. The whole test can be completed within 15 min, with the cut-off value being 25.0 μg/kg, and the quantitative limit of detection (qLOD) being 3.4 μg/kg. This method represents satisfactory recoveries of 95.2-113.0%, and the coefficients of variation (CVs) are less than 7.0%. Furthermore, this technique is successfully used to analyze AFB1 in real samples, and the results indicates good consistency with that of high-performance liquid chromatography (HPLC). The correlation coefficient is found to be greater than 0.99. The proposed test strip facilitates on-site, cost-effective, and sensitive monitoring of AFB1 in distillers' grains.
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Affiliation(s)
- Zifei Wang
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China;
- Chinese Academy of Medical Science Research Unit (No. 2019RU014), NHC Key Laboratory of Food Safety Risk Assessment, China National Center for Food Safety Risk Assessment, Beijing 100022, China;
| | - Pengjie Luo
- Chinese Academy of Medical Science Research Unit (No. 2019RU014), NHC Key Laboratory of Food Safety Risk Assessment, China National Center for Food Safety Risk Assessment, Beijing 100022, China;
| | - Baodong Zheng
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China;
- Correspondence: ; Tel.: +86-0591-83705076
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8
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Peltomaa R, Barderas R, Benito-Peña E, Moreno-Bondi MC. Recombinant antibodies and their use for food immunoanalysis. Anal Bioanal Chem 2021; 414:193-217. [PMID: 34417836 PMCID: PMC8380008 DOI: 10.1007/s00216-021-03619-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 08/04/2021] [Accepted: 08/12/2021] [Indexed: 12/26/2022]
Abstract
Antibodies are widely employed as biorecognition elements for the detection of a plethora of compounds including food and environmental contaminants, biomarkers, or illicit drugs. They are also applied in therapeutics for the treatment of several disorders. Recent recommendations from the EU on animal protection and the replacement of animal-derived antibodies by non-animal-derived ones have raised a great controversy in the scientific community. The application of recombinant antibodies is expected to achieve a high growth rate in the years to come thanks to their versatility and beneficial characteristics in comparison to monoclonal and polyclonal antibodies, such as stability in harsh conditions, small size, relatively low production costs, and batch-to-batch reproducibility. This review describes the characteristics, advantages, and disadvantages of recombinant antibodies including antigen-binding fragments (Fab), single-chain fragment variable (scFv), and single-domain antibodies (VHH) and their application in food analysis with especial emphasis on the analysis of biotoxins, antibiotics, pesticides, and foodborne pathogens. Although the wide application of recombinant antibodies has been hampered by a number of challenges, this review demonstrates their potential for the sensitive, selective, and rapid detection of food contaminants.
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Affiliation(s)
- Riikka Peltomaa
- Department of Life Sciences, University of Turku, 20014, Turku, Finland.,Turku Collegium for Science and Medicine, University of Turku, 20014, Turku, Finland
| | - Rodrigo Barderas
- Chronic Disease Programme, UFIEC, Instituto de Salud Carlos III, 28220, Madrid, Spain
| | - Elena Benito-Peña
- Department of Analytical Chemistry, Universidad Complutense de Madrid, 28040, Madrid, Spain.
| | - María C Moreno-Bondi
- Department of Analytical Chemistry, Universidad Complutense de Madrid, 28040, Madrid, Spain.
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9
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Moreno-Bondi MC, Benito-Peña E. Analytical applications of biomimetic recognition elements - an update. Anal Bioanal Chem 2021; 413:6059-6061. [PMID: 34302184 DOI: 10.1007/s00216-021-03534-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Accepted: 07/07/2021] [Indexed: 10/20/2022]
Affiliation(s)
- Maria C Moreno-Bondi
- Department of Analytical Chemistry, Universidad Complutense de Madrid, Madrid, Spain.
| | - Elena Benito-Peña
- Department of Analytical Chemistry, Universidad Complutense de Madrid, Madrid, Spain.
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10
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Xu C, He D, Zu Y, Hong S, Hao J, Li J. Microcystin-LR heterologous genetically engineered antibody recombinant and its binding activity improvement and application in immunoassay. JOURNAL OF HAZARDOUS MATERIALS 2021; 406:124596. [PMID: 33307449 DOI: 10.1016/j.jhazmat.2020.124596] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 11/12/2020] [Accepted: 11/13/2020] [Indexed: 06/12/2023]
Abstract
Microcystin-LR (MC-LR) is a high-toxic biohazard that pollutes ecological environment and agroproducts. In this study, a newly recombined genetically engineered antibody (AVHH-MVH) with higher thermal stability and binding activity was designed by chain shuffling and based on our previously obtained anti-MC-LR scFv and nanobody. Based on AVHH-MVH template, a capacity of 8.99 × 105 CFU/mL of phage display AVHH-MVH mutagenesis library was constructed by site-directed mutagenesis in MVH-CDR3 region, and then used for ultrasensitive mutants screening. Afterwards, a total of five positive AVHH-MVH mutants were isolated from the mutagenesis library, and their binding activity was higher than AVHH-MVH for MC-LR. The AVHH-MVH mutant 3 was cloned into pET-25b vector for soluble expression, and the concentration of target protein expressed in culture system was 43.5 mg/L. An indirect competitive enzyme-linked immunosorbent assay (IC-ELISA) was established based on purified AVHH-MVH mutant 3 protein, and it showed ultrasensitive binding activity for MC-LR with the detection limit of 0.0075 μg/L, which was far below the maximum residue limit standard of 1.0 μg/L in drinking water proposed by World Health Organization. The established IC-ELISA shows good accuracy, repeatability, stability and applicability for MC-LR spiked samples, and it is promising for MC-LR ultrasensitive monitoring.
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Affiliation(s)
- Chongxin Xu
- 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 Life Sciences, Nanjing Normal University, Nanjing 210023, China.
| | - Dan He
- 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
| | - Yao Zu
- College of Life Sciences, Nanjing Normal University, Nanjing 210023, China
| | - Sujuan Hong
- College of Life Sciences, Nanjing Normal University, Nanjing 210023, China
| | - Jia Hao
- 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 Plant Protection, Nanjing Agricultural University, Nanjing 210023, China
| | - Jianhong Li
- College of Life Sciences, Nanjing Normal University, Nanjing 210023, China.
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11
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Liu Y, Jiao S, Chang Y, Lu X, Liu P, Zhao Y, Zha C, Shen L, Guo Y, Zhu G. High-affinity recombinant full-length antibody-based immunochromatographic strip assay for rapid and reliable detection of pyraclostrobin residues in food samples. FOOD AGR IMMUNOL 2020. [DOI: 10.1080/09540105.2020.1797640] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Affiliation(s)
- Ying Liu
- Department of Food Science and Nutrition, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang University, Hangzhou, People’s Republic of China
- Institute of Pesticide and Environmental Toxicology, Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, Hangzhou, People’s Republic of China
| | - Shasha Jiao
- Institute of Pesticide and Environmental Toxicology, Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, Hangzhou, People’s Republic of China
| | - Yunyun Chang
- Institute of Pesticide and Environmental Toxicology, Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, Hangzhou, People’s Republic of China
| | - Xinying Lu
- Institute of Pesticide and Environmental Toxicology, Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, Hangzhou, People’s Republic of China
| | - Pengyan Liu
- Institute of Pesticide and Environmental Toxicology, Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, Hangzhou, People’s Republic of China
| | - Ying Zhao
- Institute of Pesticide and Environmental Toxicology, Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, Hangzhou, People’s Republic of China
| | - Changchun Zha
- Biointron Biological Inc., Taizhou, People’s Republic of China
| | - Lirong Shen
- Department of Food Science and Nutrition, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang University, Hangzhou, People’s Republic of China
| | - Yirong Guo
- Institute of Pesticide and Environmental Toxicology, Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, Hangzhou, People’s Republic of China
| | - Guonian Zhu
- Institute of Pesticide and Environmental Toxicology, Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, Hangzhou, People’s Republic of China
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12
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Xiong L, Zhang X, Xu Y, Li Y, Liu D, Tu Z, He Q. Anti-idiotypic VHH mediated environmentally friendly immunoassay for citrinin without mycotoxin. FOOD AGR IMMUNOL 2020. [DOI: 10.1080/09540105.2020.1795631] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Affiliation(s)
- Liang Xiong
- State Key Laboratory of Food Science and Technology, Sino-German Joint Research Institute, Nanchang University, Nanchang, People’s Republic of China
- Department of Preventive Medicine, Gannan Medical University, Ganzhou, People’s Republic of China
| | - Xueqin Zhang
- State Key Laboratory of Food Science and Technology, Sino-German Joint Research Institute, Nanchang University, Nanchang, People’s Republic of China
| | - Yang Xu
- State Key Laboratory of Food Science and Technology, Sino-German Joint Research Institute, Nanchang University, Nanchang, People’s Republic of China
| | - Yanping Li
- State Key Laboratory of Food Science and Technology, Sino-German Joint Research Institute, Nanchang University, Nanchang, People’s Republic of China
| | - Deguang Liu
- State Key Laboratory of Food Science and Technology, Sino-German Joint Research Institute, Nanchang University, Nanchang, People’s Republic of China
| | - Zhui Tu
- State Key Laboratory of Food Science and Technology, Sino-German Joint Research Institute, Nanchang University, Nanchang, People’s Republic of China
| | - Qinghua He
- State Key Laboratory of Food Science and Technology, Sino-German Joint Research Institute, Nanchang University, Nanchang, People’s Republic of China
- Jiangxi Province Key Laboratory of Modern Analytical Science, Nanchang University, Nanchang, People’s Republic of China
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13
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Xu C, Han Q, Dong S, Liu X, Liu X. Establishment of an ultrasensitive indirect competitive time-resolved fluoroimmunoassay for vancomycin determination. FOOD AGR IMMUNOL 2019. [DOI: 10.1080/09540105.2019.1639629] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Affiliation(s)
- Chongxin 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, People’s Republic of China
| | - Qi Han
- 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, People’s Republic of China
| | - Sa Dong
- 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, People’s Republic of China
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, People’s Republic of China
| | - Xiaoqin Liu
- Department of animal science and technology, Huaihua Vocational and Technical College, Huaihua, People’s Republic of China
| | - Xianjin 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, People’s Republic of China
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14
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He J, Tao X, Wang K, Ding G, Li J, Li QX, Gee SJ, Hammock BD, Xu T. One-step immunoassay for the insecticide carbaryl using a chicken single-chain variable fragment (scFv) fused to alkaline phosphatase. Anal Biochem 2019; 572:9-15. [PMID: 30831096 DOI: 10.1016/j.ab.2019.02.022] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 12/19/2018] [Accepted: 02/25/2019] [Indexed: 12/14/2022]
Abstract
Immunoassays provide a high-throughput method for monitoring pesticides in foods and the environment. Due to easy generation and capable of being manipulated, chicken single-chain variable fragment (scFv) is attractive in the development of immunoassays for pesticides. Two scFvs (X1 and X2) against the insecticide carbaryl were generated from a chicken immunized with hapten C1 conjugated to keyhole limpet hemocyanin and fused with alkaline phosphatase (AP) to develop a rapid one-step enzyme-linked immunosorbent assay for this pesticide. X2-AP showed higher binding affinity to carbaryl than X1-AP. The X2-AP-based ELISA had a half-maximum signal inhibition concentration of 15 ng mL-1 and a limit of detection of 1.6 ng mL-1. This assay showed negligible cross-reactivity with other carbamate pesticides (<0.1%) and low cross-reactivity with 1-naphthol (5%). The average recoveries of carbaryl spiked in soil, apple and pear samples by the one-step assay ranged from 90% to 114% and agreed well with those of high-performance liquid chromatography. The chicken scFv-based assay showed promise as a high-throughput screening tool for carbaryl in environmental and food matrices.
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Affiliation(s)
- Jinxin He
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China
| | - Xuewu Tao
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China
| | - Kai Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China
| | - Guochun Ding
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China
| | - Ji Li
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China
| | - Qing X Li
- Department of Molecular Biosciences and Bioengineering, University of Hawaii at Manoa, 1955 East-West Road, Honolulu, Hawaii, 96822, USA
| | - Shirley J Gee
- Department of Entomology and UCD Comprehensive Cancer Center, University of California, Davis, CA, 95616, United States
| | - Bruce D Hammock
- Department of Entomology and UCD Comprehensive Cancer Center, University of California, Davis, CA, 95616, United States
| | - Ting Xu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China.
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15
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Xu C, Liu X, Liu Y, Zhang X, Zhang C, Li J, Liu X. High sensitive single chain variable fragment screening from a microcystin-LR immunized mouse phage antibody library and its application in immunoassay. Talanta 2019; 197:397-405. [PMID: 30771953 DOI: 10.1016/j.talanta.2019.01.064] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Revised: 01/03/2019] [Accepted: 01/16/2019] [Indexed: 12/23/2022]
Abstract
Microcystin-LR (MC-LR) is one of common high-toxic biotoxins produced by cyanobacteria in waterbody. A high sensitive and convenient detection method is necessary for monitoring for MC-LR. To establish a high sensitive indirect competitive enzyme-linked immunosorbent assay (IC-ELISA) based on single chain variable fragment (scFv) for detecting MC-LR, 16 positive anti-MC-LR phage scFv particles were screened out from a MC-LR-immunized mouse phage scFv library, which was successfully constructed with the capacity of 8.67 × 107 CFU/mL. The most positive anti-MC-LR phage scFv (MscFv7) was successfully expressed in Escherichia coli (E.coli) HB2151. The molecular weight (M.W.) of expressed protein was about 30 kDa, and the concentration of purified protein was 512.6 μg/mL analyzed by SDS-PAGE and protein quantitative respectively. The IC-ELISA based on MscFv7-scFv for MC-LR shows a half-maximum inhibition (IC50) of 0.471 μg/L and a limit of detection (LOD) of 0.044 μg/L, which is below the maximum residue limit standard (MRLs) of 1.0 μg/L in drinking water. The MscFv7-scFv has a strong cross-recognition for MC-RR and MC-YR with cross-reactivity (CRs) of 93.1% and 85.9%, respectively, but weak for MC-LW with that of 9.7%, even non-recognition for MC-WR, MC-LF and MC-LY. The recovery rates of IC-ELISA to detect MC-LR spiked in different cleanliness of water samples were 81.2-106.3% with CVs of 2.62-10.22% at intra-assay and inter-assay. The results showed that we obtained a high sensitive anti-MC-LR scFv, and the established IC-ELISA based on MscFv7-scFv should be promising for ultrasensitive monitoring MC-LR, MC-RR and MC-YR in water samples.
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Affiliation(s)
- Chongxin Xu
- 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 Life Sciences, Nanjing Normal University, Nanjing 210023, China
| | - Xiaoqin Liu
- Huaihua Vocational and Technical College, Huaihua 418007, China
| | - Yuan Liu
- 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
| | - Xiao Zhang
- 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
| | - Cunzheng Zhang
- 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
| | - Jianhong Li
- College of Life Sciences, Nanjing Normal University, Nanjing 210023, China.
| | - Xianjin Liu
- 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.
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16
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Peltomaa R, Glahn-Martínez B, Benito-Peña E, Moreno-Bondi MC. Optical Biosensors for Label-Free Detection of Small Molecules. SENSORS (BASEL, SWITZERLAND) 2018; 18:E4126. [PMID: 30477248 PMCID: PMC6308632 DOI: 10.3390/s18124126] [Citation(s) in RCA: 95] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 11/20/2018] [Accepted: 11/21/2018] [Indexed: 12/12/2022]
Abstract
Label-free optical biosensors are an intriguing option for the analyses of many analytes, as they offer several advantages such as high sensitivity, direct and real-time measurement in addition to multiplexing capabilities. However, development of label-free optical biosensors for small molecules can be challenging as most of them are not naturally chromogenic or fluorescent, and in some cases, the sensor response is related to the size of the analyte. To overcome some of the limitations associated with the analysis of biologically, pharmacologically, or environmentally relevant compounds of low molecular weight, recent advances in the field have improved the detection of these analytes using outstanding methodology, instrumentation, recognition elements, or immobilization strategies. In this review, we aim to introduce some of the latest developments in the field of label-free optical biosensors with the focus on applications with novel innovations to overcome the challenges related to small molecule detection. Optical label-free methods with different transduction schemes, including evanescent wave and optical fiber sensors, surface plasmon resonance, surface-enhanced Raman spectroscopy, and interferometry, using various biorecognition elements, such as antibodies, aptamers, enzymes, and bioinspired molecularly imprinted polymers, are reviewed.
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Affiliation(s)
- Riikka Peltomaa
- Departamento de Química Analítica, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain.
| | - Bettina Glahn-Martínez
- Departamento de Química Analítica, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain.
| | - Elena Benito-Peña
- Departamento de Química Analítica, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain.
| | - María C Moreno-Bondi
- Departamento de Química Analítica, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain.
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17
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Chen ZJ, Zhang X, Wang BF, Rao MF, Wang H, Lei HT, Liu H, Zhang Y, Sun YM, Xu ZL. Production of Antigen-Binding Fragment against O, O-Diethyl Organophosphorus Pesticides and Molecular Dynamics Simulations of Antibody Recognition. Int J Mol Sci 2018; 19:ijms19051381. [PMID: 29734787 PMCID: PMC5983703 DOI: 10.3390/ijms19051381] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Revised: 04/29/2018] [Accepted: 05/03/2018] [Indexed: 01/26/2023] Open
Abstract
Immunoassay for pesticides is an emerging analytical method since it is rapid, efficient, sensitive, and inexpensive. In this study, a recombinant antigen-binding fragment (Fab) against a broad set of O,O-diethyl organophosphorus pesticides (DOPs) was produced and characterized. The κ chain and Fd fragment were amplified via PCR and inserted into the vector pComb3XSS and the soluble Fab on phagemid pComb3XSS was induced by isopropyl β-d-thiogalactoside in E. coli TOP 10F’. SDS-PAGE, Western blotting, and indirect competitive ELISA results indicated that Fab maintained the good characteristics of the parental mAb. To better understand antibody recognition, the three-dimensional (3D) model of Fab was built via homologous modeling and the interaction between Fab and DOPs was studied via molecular docking and dynamics simulations. The model clearly explained the interaction manner of Fab and DOPs, and showed that the Arg-L96 and Arg-H52 were mainly responsible for antibody binding. This work provided a foundation for further mutagenesis of Fab to improve its characteristics.
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Affiliation(s)
- Zi-Jian Chen
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510640, China.
| | - Xuan Zhang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510640, China.
| | - Bing-Feng Wang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510640, China.
| | - Mei-Fang Rao
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510640, China.
| | - Hong Wang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510640, China.
| | - Hong-Tao Lei
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510640, China.
| | - Hui Liu
- Guangdong Institute of Product Quality Supervision and Inspection, Foshan 528300, China.
| | - Yan Zhang
- Guangdong Institute of Product Quality Supervision and Inspection, Foshan 528300, China.
| | - Yuan-Ming Sun
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510640, China.
| | - Zhen-Lin Xu
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510640, China.
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18
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de la Cruz S, Madrid R, García-García A, Alcocer M, Martín R, González I, García T. Identification and characterisation of the proteins bound by specific phage-displayed recombinant antibodies (scFv) obtained against Brazil nut and almond extracts. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2018; 98:1685-1695. [PMID: 28846130 DOI: 10.1002/jsfa.8640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Revised: 02/08/2017] [Accepted: 08/22/2017] [Indexed: 06/07/2023]
Abstract
BACKGROUND Almonds and Brazil nuts are widely consumed allergenic nuts whose presence must be declared according to food labelling regulations. Their detection in food products has been recently achieved by ELISA methods with recombinant antibodies (scFv) isolated against complete Brazil nut and almond protein extracts. The screening of phage-scFv libraries against complete protein extracts confers a series of advantages over the use of purified proteins, as recombinant proteins might alter their native folding. However, using this strategy, the nature of the target detected by phage-displayed antibodies remains unknown, and requires further research to identify whether they are nut allergens or other molecules present in the extract, but not related to their allergenic potential. RESULTS Electrophoretic, chromatographic, immunological and spectrometric techniques revealed that the Brazil nut (BE95) and almond (PD1F6 and PD2C9) specific phage-scFvs detected conformational epitopes of the Brazil nut and almond 11S globulins, recognised by WHO/IUIS as Ber e 2 and Pru du 6 major allergens. Circular dichroism data indicated that severe heat treatment would entail loss of epitope structure, disabling scFv for target detection. CONCLUSIONS The presence of important Brazil nut and almond allergens (Ber e 2 and Pru du 6) in foodstuffs can be determined by using phage-display antibodies BE95, PD1F6 and PD2C9 as affinity probes in ELISA. © 2017 Society of Chemical Industry.
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Affiliation(s)
- Silvia de la Cruz
- Departamento de Nutrición, Bromatología y Tecnología de los Alimentos, Facultad de Veterinaria, Universidad Complutense de Madrid, Madrid, Spain
| | - Raquel Madrid
- Departamento de Nutrición, Bromatología y Tecnología de los Alimentos, Facultad de Veterinaria, Universidad Complutense de Madrid, Madrid, Spain
| | - Aina García-García
- Departamento de Nutrición, Bromatología y Tecnología de los Alimentos, Facultad de Veterinaria, Universidad Complutense de Madrid, Madrid, Spain
| | - Marcos Alcocer
- Department of Nutritional Sciences, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, UK
| | - Rosario Martín
- Departamento de Nutrición, Bromatología y Tecnología de los Alimentos, Facultad de Veterinaria, Universidad Complutense de Madrid, Madrid, Spain
| | - Isabel González
- Departamento de Nutrición, Bromatología y Tecnología de los Alimentos, Facultad de Veterinaria, Universidad Complutense de Madrid, Madrid, Spain
| | - Teresa García
- Departamento de Nutrición, Bromatología y Tecnología de los Alimentos, Facultad de Veterinaria, Universidad Complutense de Madrid, Madrid, Spain
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19
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Wang J, Mukhtar H, Ma L, Pang Q, Wang X. VHH Antibodies: Reagents for Mycotoxin Detection in Food Products. SENSORS 2018; 18:s18020485. [PMID: 29415506 PMCID: PMC5855929 DOI: 10.3390/s18020485] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Revised: 01/28/2018] [Accepted: 02/02/2018] [Indexed: 01/23/2023]
Abstract
Mycotoxins are the toxic secondary metabolites produced by fungi and they are a worldwide public health concern. A VHH antibody (or nanobody) is the smallest antigen binding entity and is produced by heavy chain only antibodies. Compared with conventional antibodies, VHH antibodies overcome many pitfalls typically encountered in clinical therapeutics and immunodiagnostics. Likewise, VHH antibodies are particularly useful for monitoring mycotoxins in food and feedstuffs, as they are easily genetic engineered and have superior stability. In this review, we summarize the efforts to produce anti-mycotoxins VHH antibodies and associated assays, presenting VHH as a potential tool in mycotoxin analysis.
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Affiliation(s)
- Jia Wang
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
| | - Hina Mukhtar
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
| | - Lan Ma
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
| | - Qian Pang
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
| | - Xiaohong Wang
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
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20
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Pan M, Li S, Wang J, Sheng W, Wang S. Development and Validation of a Reproducible and Label-Free Surface Plasmon Resonance Immunosensor for Enrofloxacin Detection in Animal-Derived Foods. SENSORS 2017; 17:s17091984. [PMID: 28867795 PMCID: PMC5621032 DOI: 10.3390/s17091984] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 08/05/2017] [Accepted: 08/28/2017] [Indexed: 01/24/2023]
Abstract
This study describes the development of a reproducible and label-free surface plasmon resonance (SPR) immunosensor and its application in the detection of harmful enrofloxacin (ENRO) in animal-derived foods. The experimental parameters for the immunosensor construction and regeneration, including the pH value (4.5), concentration for coating ENRO-ovalbumin conjugate (ENRO-OVA) (100 μg·mL−1), concentration of anti-ENRO antibody (80 nM) and regeneration solution (0.1 mol·L−1 HCl) were evaluated in detail. With the optimized parameters, the proposed SPR immunosensor obtained a good linear response to ENRO with high sensitivity (IC50: 3.8 ng·mL−1) and low detection limit (IC15: 1.2 ng·mL−1). The proposed SPR immunosensor was further validated to have favorable performances for ENRO residue detection in typical animal-derived foods after a simple matrix pretreatment procedure, as well as acceptable accuracy (recovery: 84.3–96.6%), precision (relative standard deviation (n = 3): 1.8–4.6%), and sensitivity (IC15 ≤ 8.4 ng·mL−1). Each SPR chip for analysis can be reused at least 100 times with good stability and the analysis cycle containing the steps of sample uploading/chip regeneration/baseline recovery can be completed within 6 min (one cycle) and auto-operated by a predetermined program. These results demonstrated that the proposed SPR immunosensor provided an effective strategy for accurate, sensitive, and rapid detection for ENRO residue, which has great potential for routine analysis of large numbers of samples for measuring different types of compounds.
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Affiliation(s)
- Mingfei Pan
- Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Tianjin University of Science and Technology, Tianjin 300457, China.
| | - Shijie Li
- Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Tianjin University of Science and Technology, Tianjin 300457, China.
| | - Junping Wang
- Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Tianjin University of Science and Technology, Tianjin 300457, China.
| | - Wei Sheng
- Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Tianjin University of Science and Technology, Tianjin 300457, China.
| | - Shuo Wang
- Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Tianjin University of Science and Technology, Tianjin 300457, China.
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21
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Wang Z, Beier RC, Shen J. Immunoassays for the detection of macrocyclic lactones in food matrices – A review. Trends Analyt Chem 2017. [DOI: 10.1016/j.trac.2017.04.008] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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22
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Barnych B, Vasylieva N, Joseph T, Hulsizer S, Nguyen HM, Cajka T, Pessah I, Wulff H, Gee SJ, Hammock BD. Development of Tetramethylenedisulfotetramine (TETS) Hapten Library: Synthesis, Electrophysiological Studies, and Immune Response in Rabbits. Chemistry 2017; 23:8466-8472. [PMID: 28411375 PMCID: PMC5808876 DOI: 10.1002/chem.201700783] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Revised: 04/08/2017] [Indexed: 11/06/2022]
Abstract
There is a need for fast detection methods for the banned rodenticide tetramethylenedisulfotetramine (TETS), a highly potent blocker of the γ-aminobutyric acid (GABAA ) receptors. General synthetic approach toward two groups of analogues was developed. Screening of the resulting library of compounds by FLIPR or whole-cell voltage-clamp revealed that, despite the structural differences, some of the TETS analogues retained GABAA receptor inhibition; however, their potency was an order of magnitude lower. Antibodies raised in rabbits against some of the TETS analogues conjugated to protein recognized free TETS and will be used for the development of an immunoassay for TETS.
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Affiliation(s)
- Bogdan Barnych
- Department of Entomology and Nematology, and UCD Comprehensive Cancer Center, University of California Davis, Davis, California, 95616, United States
| | - Natalia Vasylieva
- Department of Entomology and Nematology, and UCD Comprehensive Cancer Center, University of California Davis, Davis, California, 95616, United States
| | - Tom Joseph
- Department of Entomology and Nematology, and UCD Comprehensive Cancer Center, University of California Davis, Davis, California, 95616, United States
| | - Susan Hulsizer
- Department of Molecular Biosciences, School of Veterinary Medicine, University of California Davis, Davis, California, 95616, United States
| | - Hai M Nguyen
- Department of Pharmacology, School of Medicine, University of California Davis, Davis, California, 95616, United States
| | - Tomas Cajka
- UC Davis Genome Center-Metabolomics, University of California Davis, Davis, California, 95616, United States
| | - Isaac Pessah
- Department of Molecular Biosciences, School of Veterinary Medicine, University of California Davis, Davis, California, 95616, United States
| | - Heike Wulff
- Department of Pharmacology, School of Medicine, University of California Davis, Davis, California, 95616, United States
| | - Shirley J Gee
- Department of Entomology and Nematology, and UCD Comprehensive Cancer Center, University of California Davis, Davis, California, 95616, United States
| | - Bruce D Hammock
- Department of Entomology and Nematology, and UCD Comprehensive Cancer Center, University of California Davis, Davis, California, 95616, United States
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Li YF, Sun YM, Beier RC, Lei HT, Gee S, Hammock BD, Wang H, Wang Z, Sun X, Shen YD, Yang JY, Xu ZL. Immunochemical techniques for multianalyte analysis of chemical residues in food and the environment: A review. Trends Analyt Chem 2017. [DOI: 10.1016/j.trac.2016.12.010] [Citation(s) in RCA: 106] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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24
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Sasao A, Takaki M, Ohtsu Y, Mishima S, Yonemitsu K, Morioka H, Nishitani Y. Development of an immunoassay for fluvoxamine detection using a recombinant single-chain variable fragment antibody. Forensic Toxicol 2017. [DOI: 10.1007/s11419-017-0358-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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25
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Integrating scFv into xMAP Assays for the Detection of Marine Toxins. Toxins (Basel) 2016; 8:toxins8110346. [PMID: 27879646 PMCID: PMC5127142 DOI: 10.3390/toxins8110346] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Revised: 11/09/2016] [Accepted: 11/16/2016] [Indexed: 11/17/2022] Open
Abstract
Marine toxins, such as saxitoxin and domoic acid are associated with algae blooms and can bioaccumulate in shell fish which present both health and economic concerns. The ability to detect the presence of toxin is paramount for the administration of the correct supportive care in case of intoxication; environmental monitoring to detect the presence of toxin is also important for prevention of intoxication. Immunoassays are one tool that has successfully been applied to the detection of marine toxins. Herein, we had the variable regions of two saxitoxin binding monoclonal antibodies sequenced and used the information to produce recombinant constructs that consist of linked heavy and light variable domains that make up the binding domains of the antibodies (scFv). Recombinantly produced binding elements such as scFv provide an alternative to traditional antibodies and serve to "preserve" monoclonal antibodies as they can be easily recreated from their sequence data. In this paper, we combined the anti-saxitoxin scFv developed here with a previously developed anti-domoic acid scFv and demonstrated their utility in a microsphere-based competitive immunoassay format. In addition to detection in buffer, we demonstrated equivalent sensitivity in oyster and scallop matrices. The potential for multiplexed detection using scFvs in this immunoassay format is demonstrated.
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26
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Wang F, Wang H, Shen YD, Li YJ, Dong JX, Xu ZL, Yang JY, Sun YM, Xiao ZL. Bispecific Monoclonal Antibody-Based Multianalyte ELISA for Furaltadone Metabolite, Malachite Green, and Leucomalachite Green in Aquatic Products. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:8054-8061. [PMID: 27706938 DOI: 10.1021/acs.jafc.6b03233] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A new multianalyte immunoassay was designed to screen furaltadone metabolite 5-morpholinomethyl-3-amino-2-oxazolidone (AMOZ), malachite green (MG), and leucomalachite green (LMG) in aquatic products using a bispecific monoclonal antibody (BsMAb). Gradient drug mutagenesis methods were separately used to prepare an anti-3-nitrobenzaldehyde-derivatized AMOZ (3-NPAMOZ) hybridoma cell line that was hypoxanthine-guanine-phosphoribosyltransferase (HGRPT) deficient and an anti-LMG hybridoma cell line that was thymidine kinase (TK) deficient. BsMAb recognizing 3-NPAMOZ and LMG was generated using hybrid-hybridomas of HGRPT and TK deficient cell lines. For AMOZ and LMG, respectively, the BsMAb-based indirect competitive ELSIA (ic-ELISA) values of 1.7 ng/mL and 45.3 ng/mL and detection limits of 0.2 ng/mL and 4.8 ng/mL. To establish the ic-ELISA, 3-NPAMOZ derivatized from AMOZ with 3-nitrobenzaldehyde and LMG reduced from MG by potassium borohydride was recognized by BsMAb. Recoveries of AMOZ, MG, and LMG in aquatic products were satisfactory and correlated with HPLC analysis. Thus, the multianalyte ic-ELISA is suitable for rapid quantification of AMOZ, MG, and LMG in aquatic products.
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Affiliation(s)
- Feng Wang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University , Guangzhou 510642, China
| | - Hong Wang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University , Guangzhou 510642, China
| | - Yu-Dong Shen
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University , Guangzhou 510642, China
| | - Yong-Jun Li
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University , Guangzhou 510642, China
- Zhongshan Quality Supervision & Inspection Institute of Agricultural Products , Zhongshan 528403, China
| | - Jie-Xian Dong
- Department of Entomology and Nematology and UCD Comprehensive Cancer Center, University of California , Davis, California 95616, United States
| | - Zhen-Lin Xu
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University , Guangzhou 510642, China
| | - Jin-Yi Yang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University , Guangzhou 510642, China
| | - Yuan-Ming Sun
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University , Guangzhou 510642, China
| | - Zhi-Li Xiao
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University , Guangzhou 510642, China
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27
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Sun Y, Ban B, Bradbury A, Ansari GAS, Blake DA. Combining Yeast Display and Competitive FACS to Select Rare Hapten-Specific Clones from Recombinant Antibody Libraries. Anal Chem 2016; 88:9181-9. [PMID: 27571429 PMCID: PMC5032104 DOI: 10.1021/acs.analchem.6b02334] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
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The development of antibodies to
low molecular weight haptens remains
challenging due to both the low immunogenicity of many haptens and
the cross-reactivity of the protein carriers used to generate the
immune response. Recombinant antibodies and novel display technologies
have greatly advanced antibody development; however, new techniques
are still required to select rare hapten-specific antibodies from
large recombinant libraries. In the present study, we used a combination
of phage and yeast display to screen an immune antibody library (size,
4.4 × 106) against hapten markers for petroleum contamination
(phenanthrene and methylphenanthrenes). Selection via phage display
was used first to enrich the library between 20- and 100-fold for
clones that bound to phenanthrene–protein conjugates. The enriched
libraries were subsequently transferred to a yeast display system
and a newly developed competitive FACS procedure was employed to select
rare hapten-specific clones. Competitive FACS increased the frequency
of hapten-specific scFvs in our yeast-displayed scFvs from 0.025 to
0.005% in the original library to between 13 and 35% in selected pools.
The presence of hapten-specific scFvs was confirmed by competitive
ELISA using periplasmic protein. Three distinct antibody clones that
recognize phenanthrene and methylphenanthrenes were selected, and
their distinctive binding properties were characterized. To our knowledge,
these are first antibodies that can distinguish between methylated
(petrogenic) versus unmethylated (pyrogenic) phenanthrenes; such antibodies
will be useful in detecting the sources of environmental contamination.
This selection method could be generally adopted in the selection
of other hapten-specific recombinant antibodies.
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Affiliation(s)
- Yue Sun
- Department of Biochemistry and Molecular Biology, Tulane University School of Medicine , New Orleans, Louisiana, United States
| | - Bhupal Ban
- Department of Biochemistry and Molecular Biology, Tulane University School of Medicine , New Orleans, Louisiana, United States
| | - Andrew Bradbury
- Bioscience Division, Los Alamos National Laboratory , Los Alamos, New Mexico, United States
| | - G A Shakeel Ansari
- Department of Pathology, University of Texas Medical Branch , Galveston, Texas, United States
| | - Diane A Blake
- Department of Biochemistry and Molecular Biology, Tulane University School of Medicine , New Orleans, Louisiana, United States
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28
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Song HS, Kwon OS, Kim JH, Conde J, Artzi N. 3D hydrogel scaffold doped with 2D graphene materials for biosensors and bioelectronics. Biosens Bioelectron 2016; 89:187-200. [PMID: 27020065 DOI: 10.1016/j.bios.2016.03.045] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2015] [Revised: 03/11/2016] [Accepted: 03/17/2016] [Indexed: 12/20/2022]
Abstract
Hydrogels consisting of three-dimensional (3D) polymeric networks have found a wide range of applications in biotechnology due to their large water capacity, high biocompatibility, and facile functional versatility. The hydrogels with stimulus-responsive swelling properties have been particularly instrumental to realizing signal transduction in biosensors and bioelectronics. Graphenes are two-dimensional (2D) nanomaterials with unprecedented physical, optical, and electronic properties and have also found many applications in biosensors and bioelectronics. These two classes of materials present complementary strengths and limitations which, when effectively coupled, can result in significant synergism in their electrical, mechanical, and biocompatible properties. This report reviews recent advances made with hydrogel and graphene materials for the development of high-performance bioelectronics devices. The report focuses on the interesting intersection of these materials wherein 2D graphenes are hybridized with 3D hydrogels to develop the next generation biosensors and bioelectronics.
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Affiliation(s)
- Hyun Seok Song
- Korea Division of Bioconvergence Analysis, Korea Basic Science Institute (KBSI), Yuseong, Daejeon 169-148, Republic of Korea
| | - Oh Seok Kwon
- BioNanotechnology Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Yuseong, Daejeon 305-600, Republic of Korea
| | - Jae-Hong Kim
- Department of Chemical and Environmental Engineering, School of Engineering and Applied Science, Yale University, New Haven, CT 06511, USA
| | - João Conde
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, USA; School of Engineering and Materials Science, Queen Mary University of London, London, UK.
| | - Natalie Artzi
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, USA; Broad Institute of MIT and Harvard, Cambridge, MA, USA; Department of Medicine, Biomedical Engineering Division, Brigham and Women's Hospital, Harvard Medical School, Boston, USA.
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29
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Schumacher S, Seitz H. Quality control of antibodies for assay development. N Biotechnol 2016; 33:544-50. [PMID: 26873787 DOI: 10.1016/j.nbt.2016.02.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Revised: 01/12/2016] [Accepted: 02/03/2016] [Indexed: 01/19/2023]
Abstract
Antibodies are used as powerful tools in basic research, for example, in biomarker identification, and in various forms for diagnostics, for example, identification of allergies or autoimmune diseases. Due to their robustness and ease of handling, immunoassays are favourite methods for investigation of various biological or medical questions. Nevertheless in many cases, additional analyses such as mass spectrometry are used to validate or confirm the results of immunoassays. To minimize the workload and to increase confidence in immunoassays, there are urgent needs for antibodies which are both highly specific and well validated. Unfortunately many commercially available antibodies are neither well characterized nor fully tested for cross-reactivities. Adequate quality control and validation of an antibody is time-consuming and can be frustrating. Such validation needs to be performed for every assay/application. However, where an antibody validation is successful, a highly specific and stable reagent will be on hand. This article describes the validation processes of antibodies, including some often neglected factors, as well as unspecific binding to other sample compounds in a multiparameter diagnostic assay. The validation consists of different immunological methods, with important assay controls, and is performed in relation to the development of a diagnostic test.
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Affiliation(s)
- Sarah Schumacher
- Fraunhofer Institute for Cell Therapy and Immunology - Bioanalytics und Bioprocesses, Am Mühlenberg 13, 14476 Potsdam, Germany; Humboldt University Berlin, Department of Biology, Invalidenstr. 110, 10115 Berlin, Germany
| | - Harald Seitz
- Fraunhofer Institute for Cell Therapy and Immunology - Bioanalytics und Bioprocesses, Am Mühlenberg 13, 14476 Potsdam, Germany.
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