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Mustafa R, Sukor R, Mohd Nor SM, Saari N, Mohsin AZ. Development of Methyl Ester Antibody-Based Competitive Indirect ELISA for Quantitative Detection of Mitragynine in Human Urine. ACS OMEGA 2023; 8:47412-47426. [PMID: 38144118 PMCID: PMC10734015 DOI: 10.1021/acsomega.3c02734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Accepted: 07/26/2023] [Indexed: 12/26/2023]
Abstract
Mitragynine is the main psychoactive compound of Mitragyna speciosa Korth. (kratom). This alkaloid could render psychotropic effects and is often misused as a substitute for commercial drugs. Nowadays, the increasing popularity of kratom has led to the development of a rapid and effective detection method. The detection of mitragynine in a biological sample such as urine requires a highly sensitive and specific method due to the complex nature of mitragynine in urine. Enzyme-linked immunosorbent assay (ELISA) is well known as a rapid screening method for biological samples. In this study, a competitive indirect ELISA was successfully developed using MG-22-OCH3 IgG as a detection antibody for mitragynine in human urine. The mitragynine immunoassay showed a limit of detection and a limit of quantification of 0.412 and 1.25 μg/mL, respectively. The measurement range was between 0.01 and 100.0 μg/mL, with a minimal inhibition (IC50) value of 0.152 μg/mL. The developed ELISA was validated using a gold method such as high-performance liquid chromatography-mass spectrometry (HPLC-MS). The percentage of recovery and the coefficient of variation (CV) for the ELISA and LCMS/MS analyses were 84.0-95.70%, 99.20-112.0%, 7.69-9.78%, and 2.86-6.62%, respectively. This indicates that the developed ELISA is a reliable method that can be used as a rapid approach for quantifying mitragynine content in biological samples.
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Affiliation(s)
- Radhiahtul
Raehan Mustafa
- Academy
of Islamic Civilisation, Faculty of Social Sciences and Humanities, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia
| | - Rashidah Sukor
- Department
of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
- Laboratory
of Food Safety and Food Integrity, Institute of Tropical Agriculture
and Food Security, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| | - Siti Mariam Mohd Nor
- Department
of Chemistry, Faculty of Science, Universiti
Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| | - Nazamid Saari
- Department
of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| | - Aliah Zannierah Mohsin
- Department
of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
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Shen H, Wan Y, Wu X, Zhang Y, Li J, Cui T, Sun H, Cui H, He K, Hui G, Chen X, Liu G, Du M. Hapten designs based on aldicarb for the development of a colloidal gold immunochromatographic quantitative test strip. Front Nutr 2022; 9:976284. [PMID: 36082035 PMCID: PMC9446148 DOI: 10.3389/fnut.2022.976284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Accepted: 08/01/2022] [Indexed: 12/01/2022] Open
Abstract
The common carbamate insecticide aldicarb is considered one of the most acutely toxic pesticides. Herein, rational design was used to synthesize two haptens with spacers of different carbon chain lengths. The haptens were then used to immunize mice. The antibodies obtained were evaluated systematically, and a colloidal gold immunochromatographic strip was developed based on an anti-aldicarb monoclonal antibody. The 50% inhibition concentration and linear range of anti-aldicarb monoclonal antibody immunized with Hapten 1 were 0.432 ng/mL and 0.106–1.757 ng/mL, respectively. The cross-reactivities for analogs of aldicarb were all <1%. The limit of detection of the colloidal gold immunochromatographic strip was 30 μg/kg, and the average recoveries of aldicarb ranged from 80.4 to 110.5% in spiked samples. In the analysis of spiked samples, the test strip could accurately identify positive samples detected by the instrumental method in the GB 23200.112-2018 standard but produced some false positives for negative samples. This assay provides a rapid and accurate preliminary screening method for the determination of aldicarb in agricultural products and environments.
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Affiliation(s)
- Hong Shen
- Biological Inspection Department, Zhejiang Institute for Food and Drug Control, Hangzhou, China
| | - Yuping Wan
- Beijing Kwinbon Biotechnology Co., Ltd., Beijing, China
- Beijing Engineering Research Centre of Food Safety Immunodetection, Beijing, China
| | - Xiaosheng Wu
- Beijing Kwinbon Biotechnology Co., Ltd., Beijing, China
- Beijing Engineering Research Centre of Food Safety Immunodetection, Beijing, China
| | - Yu Zhang
- Beijing Kwinbon Biotechnology Co., Ltd., Beijing, China
- Beijing Engineering Research Centre of Food Safety Immunodetection, Beijing, China
| | - Jingwen Li
- Beijing Center for Physical and Chemical Analysis, Institute of Analysis and Testing, Beijing Academy of Science and Technology, Beijing, China
| | - Tingting Cui
- Beijing Kwinbon Biotechnology Co., Ltd., Beijing, China
- Beijing Engineering Research Centre of Food Safety Immunodetection, Beijing, China
| | - Han Sun
- Biological Inspection Department, Zhejiang Institute for Food and Drug Control, Hangzhou, China
| | - Haifeng Cui
- Beijing Kwinbon Biotechnology Co., Ltd., Beijing, China
- Beijing Engineering Research Centre of Food Safety Immunodetection, Beijing, China
| | - Kailun He
- Biological Inspection Department, Zhejiang Institute for Food and Drug Control, Hangzhou, China
| | - Guangpeng Hui
- Beijing Kwinbon Biotechnology Co., Ltd., Beijing, China
- Beijing Engineering Research Centre of Food Safety Immunodetection, Beijing, China
| | - Xu Chen
- Beijing Kwinbon Biotechnology Co., Ltd., Beijing, China
- Beijing Engineering Research Centre of Food Safety Immunodetection, Beijing, China
| | - Guoqiang Liu
- Beijing Kwinbon Biotechnology Co., Ltd., Beijing, China
- Beijing Engineering Research Centre of Food Safety Immunodetection, Beijing, China
| | - Meihong Du
- Beijing Center for Physical and Chemical Analysis, Institute of Analysis and Testing, Beijing Academy of Science and Technology, Beijing, China
- *Correspondence: Meihong Du,
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Geleta GS. A colorimetric aptasensor based on gold nanoparticles for detection of microbial toxins: an alternative approach to conventional methods. Anal Bioanal Chem 2022; 414:7103-7122. [PMID: 35902394 DOI: 10.1007/s00216-022-04227-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2022] [Revised: 07/06/2022] [Accepted: 07/08/2022] [Indexed: 11/01/2022]
Abstract
Frequent contamination of foods with microbial toxins produced by microorganisms such as bacteria, fungi, and algae represents an increasing public health problem that requires the development of quick and easy tools to detect them at trace levels. Recently, it has been found that colorimetric detection methods may replace traditional methods in the field because of their ease of use, quick response, ease of manufacture, low cost, and naked-eye visibility. Therefore, it is suitable for fieldwork, especially for work in remote areas of the world. However, the development of colorimetric detection methods with low detection limits is a challenge that limits their wide applicability in the detection of food contaminants. To address these challenges, nanomaterial-based transduction systems are used to construct colorimetric biosensors. For example, gold nanoparticles (AuNPs) provide an excellent platform for the development of colorimetric biosensors because they offer the advantages of easy synthesis, biocompatibility, advanced surface functionality, and adjustable physicochemical properties. The selectivity of the colorimetric biosensor can be achieved by the combination of aptamers and gold nanoparticles, which provides an unprecedented opportunity to detect microbial toxins. Compared to antibodies, aptamers have significant advantages in the analysis of microbial toxins due to their smaller size, higher binding affinity, reproducible chemical synthesis and modification, stability, and specificity. Two colorimetric mechanisms for the detection of microbial toxins based on AuNPs have been described. First, sensors that use the localized surface plasmon resonance (LSPR) phenomenon of gold nanoparticles can exhibit very strong colors in the visible range because of changes caused by aggregation or disaggregation. Second, the detection mechanism of AuNPs is based on their enzyme mimetic properties and it is possible to construct a colorimetric biosensor based on the 3,3',5,5'-tetramethylbenzidine/Hydrogen peroxide, TMB/H2O2 reaction to detect microbial toxins. Therefore, this review summarizes the recent applications of AuNP-based colorimetric aptasensors for detecting microbial toxins, including bacterial toxins, fungal toxins, and algal toxins focusing on selectivity, sensitivity, and practicality. Finally, the most important current challenges in this field and future research opportunities are discussed.
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Affiliation(s)
- Girma Salale Geleta
- Department of Chemistry, College of Natural Sciences, Salale University, P.O. Box 245, Oromia, Fiche, Ethiopia.
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Florentini EA, Angulo N, Gilman RH, Alcántara R, Roncal E, Antiparra R, Toscano E, Vallejos K, Kirwan D, Zimic M, Sheen P. Immunological detection of pyrazine-2-carboxylic acid for the detection of pyrazinamide resistance in Mycobacterium tuberculosis. PLoS One 2020; 15:e0241600. [PMID: 33151985 PMCID: PMC7643994 DOI: 10.1371/journal.pone.0241600] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Accepted: 10/17/2020] [Indexed: 11/18/2022] Open
Abstract
Pyrazinamide (PZA) susceptibility testing in Mycobacterium tuberculosis (Mtb) is a current area of development and PZA-resistant strains are increasingly prevalent. Previous studies have demonstrated that the detection of pyrazinoic acid (POA), the metabolite produced by the deamidation of PZA, is a good predictor for PZA resistance since a resistant strain would not convert PZA into POA at a critical required rate, whereas a susceptible strain will do, expelling POA to the extracellular environment at a certain rate, and allowing for quantification of this accumulated analyte. In order to quantify POA, an indirect competitive ELISA (icELISA) test using hyperimmune polyclonal rabbit serum against POA was developed: for this purpose, pure POA was first covalently linked to the highly immunogenic Keyhole Limpet Hemocyanine, and inoculated in rabbits. A construct made of bovine serum albumin (BSA) linked to pure POA and fixed at the bottom of wells was used as a competitor against spiked samples and liquid Mtb culture supernatants. When spiked samples (commercial POA alone) were analyzed, the half maximal inhibitory concentration (IC50) was 1.16 mg/mL, the limit of detection 200 μg/mL and the assay was specific (it did not detect PZA, IC50 > 20 mg/mL). However, culture supernatants (7H9-OADC-PANTA medium) disrupted the competition and a proper icELISA curve was not obtainable. We consider that, although we have shown that it is feasible to induce antibodies against POA, matrix effects could damage its analytical usefulness; multiple, upcoming ways to solve this obstacle are suggested.
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Affiliation(s)
- Edgar A. Florentini
- Laboratorio de Bioinformática y Biología Molecular, Laboratorios de Investigación y Desarrollo, Facultad de Ciencias y Filosofía, Universidad Peruana Cayetano Heredia, San Martín de Porras, Lima, Perú
| | - Noelia Angulo
- Laboratorio de Bioinformática y Biología Molecular, Laboratorios de Investigación y Desarrollo, Facultad de Ciencias y Filosofía, Universidad Peruana Cayetano Heredia, San Martín de Porras, Lima, Perú
| | - Robert H. Gilman
- Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States of America
| | - Roberto Alcántara
- Laboratorio de Bioinformática y Biología Molecular, Laboratorios de Investigación y Desarrollo, Facultad de Ciencias y Filosofía, Universidad Peruana Cayetano Heredia, San Martín de Porras, Lima, Perú
| | - Elisa Roncal
- Laboratorio de Bioinformática y Biología Molecular, Laboratorios de Investigación y Desarrollo, Facultad de Ciencias y Filosofía, Universidad Peruana Cayetano Heredia, San Martín de Porras, Lima, Perú
| | - Ricardo Antiparra
- Laboratorio de Bioinformática y Biología Molecular, Laboratorios de Investigación y Desarrollo, Facultad de Ciencias y Filosofía, Universidad Peruana Cayetano Heredia, San Martín de Porras, Lima, Perú
| | - Emily Toscano
- Laboratorio de Bioinformática y Biología Molecular, Laboratorios de Investigación y Desarrollo, Facultad de Ciencias y Filosofía, Universidad Peruana Cayetano Heredia, San Martín de Porras, Lima, Perú
| | - Katherine Vallejos
- Laboratorio de Bioinformática y Biología Molecular, Laboratorios de Investigación y Desarrollo, Facultad de Ciencias y Filosofía, Universidad Peruana Cayetano Heredia, San Martín de Porras, Lima, Perú
| | - Danni Kirwan
- Laboratorio de Bioinformática y Biología Molecular, Laboratorios de Investigación y Desarrollo, Facultad de Ciencias y Filosofía, Universidad Peruana Cayetano Heredia, San Martín de Porras, Lima, Perú
| | - Mirko Zimic
- Laboratorio de Bioinformática y Biología Molecular, Laboratorios de Investigación y Desarrollo, Facultad de Ciencias y Filosofía, Universidad Peruana Cayetano Heredia, San Martín de Porras, Lima, Perú
| | - Patricia Sheen
- Laboratorio de Bioinformática y Biología Molecular, Laboratorios de Investigación y Desarrollo, Facultad de Ciencias y Filosofía, Universidad Peruana Cayetano Heredia, San Martín de Porras, Lima, Perú
- * E-mail:
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Wang Y, Jiang J, Fotina H, Zhang H, Chen J. Advances in Antibody Preparation Techniques for Immunoassays of Total Aflatoxin in Food. Molecules 2020; 25:molecules25184113. [PMID: 32916811 PMCID: PMC7571119 DOI: 10.3390/molecules25184113] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 09/07/2020] [Accepted: 09/07/2020] [Indexed: 11/16/2022] Open
Abstract
Aflatoxin (AF) contamination is a major concern in the food and feed industry because of its prevalence and toxicity. Improved aflatoxin detection methods are still needed. Immunoassays are an important method for total aflatoxin (TAF) analysis in food due to its technical advantages such as high specificity, sensitivity, and simplicity, but require high-quality antibodies. Here, we first review the three ways to prepare high-quality antibodies for TAF immunoassay, second, compare the advantages and disadvantages of antigen synthesis methods for B-group and G-group aflatoxins, and third, describe the status of novel genetic engineering antibodies. This review can provide new methods and ideas for the development of TAF immunoassays.
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Affiliation(s)
- Yanan Wang
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang 453003, China; (Y.W.); (H.Z.); (J.C.)
- Faculty of Veterinary Medicine, Sumy National Agrarian University, 40021 Sumy, Ukraine
| | - Jinqing Jiang
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang 453003, China; (Y.W.); (H.Z.); (J.C.)
- Correspondence: (J.J.); (H.F.); Tel.: +86-135-2508-3536 (J.J.)
| | - Hanna Fotina
- Faculty of Veterinary Medicine, Sumy National Agrarian University, 40021 Sumy, Ukraine
- Correspondence: (J.J.); (H.F.); Tel.: +86-135-2508-3536 (J.J.)
| | - Haitang Zhang
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang 453003, China; (Y.W.); (H.Z.); (J.C.)
| | - Junjie Chen
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang 453003, China; (Y.W.); (H.Z.); (J.C.)
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Zhang X, Song M, Yu X, Wang Z, Ke Y, Jiang H, Li J, Shen J, Wen K. Development of a new broad-specific monoclonal antibody with uniform affinity for aflatoxins and magnetic beads-based enzymatic immunoassay. Food Control 2017. [DOI: 10.1016/j.foodcont.2017.02.049] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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