1
|
Zhang Z, Feng Y, Teng H, Ru S, Li Y, Liu M, Wang J. Development and application of bisphenol S electrochemical immunosensor and iridium oxide nanoparticle-based lateral flow immunoassay. CHEMOSPHERE 2024; 364:143034. [PMID: 39117083 DOI: 10.1016/j.chemosphere.2024.143034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 08/01/2024] [Accepted: 08/05/2024] [Indexed: 08/10/2024]
Abstract
Bisphenol S (BPS) is a common pollutant in the environment and has posed a potential threat to aquatic animals and human health. To accurately assess the pollution level and ecological risk of BPS, there is an urgent need to establish simple and sensitive detection methods for BPS. In this study, BPS complete antigen was successfully prepared by introducing methyl 4-bromobutyrate and coupling bovine serum albumin (BSA). The monoclonal antibody against BPS (anti-BPS mAb) with high affinity (1: 256,000) was developed based on the BPS complete antigen, which showed low cross-reactivity with BPS structural analogues. Then, an electrochemical immunosensor was constructed to detect BPS using multi-walled carbon nanotubes and gold nanoflower composites as signal amplification elements and using anti-BPS mAb as the probe. The electrochemical immunosensor had a linear range from 1 to 250 ng⋅mL-1 and a limit of detection (LOD) down to 0.6 ng⋅mL-1. Additionally, a more stable and sensitive lateral flow immunoassay (LFIA) for BPS was developed based on iridium oxide nanoparticles, with a visual detection limit of 1 ng⋅mL-1, which was 10 times lower than that of classical Au-NPs LFIA. After evaluation of their stability and specificity, the reliability of these two methods were further validated by measuring BPS concentrations in the water and fish tissues. Thus, this study provides sensitive, robust and rapid methods for the detection of BPS in the environment and organisms, which can provide a methodological reference for monitoring environmental contaminants.
Collapse
Affiliation(s)
- Zhenzhong Zhang
- College of Marine Life Sciences, Ocean University of China, Qingdao, 266003, China
| | - Yongliang Feng
- Department of Basic Courses, Tangshan University, Tangshan, 063000, China
| | - Hayan Teng
- College of Marine Life Sciences, Ocean University of China, Qingdao, 266003, China
| | - Shaoguo Ru
- College of Marine Life Sciences, Ocean University of China, Qingdao, 266003, China
| | - Yuejiao Li
- College of Marine Life Sciences, Ocean University of China, Qingdao, 266003, China
| | - Minhao Liu
- College of Marine Life Sciences, Ocean University of China, Qingdao, 266003, China
| | - Jun Wang
- College of Marine Life Sciences, Ocean University of China, Qingdao, 266003, China.
| |
Collapse
|
2
|
Huang Y, Li R, Zhu W, Zhao J, Wang H, Zhang Z, Lin H, Li W, Li Z. Development of a fluorescent multiplexed lateral flow immunoassay for the simultaneous detection of crustacean allergen tropomyosin, sarcoplasmic calcium binding protein and egg allergen ovalbumin in different matrices and commercial foods. Food Chem 2024; 440:138275. [PMID: 38150909 DOI: 10.1016/j.foodchem.2023.138275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 12/17/2023] [Accepted: 12/22/2023] [Indexed: 12/29/2023]
Abstract
A quantum dot (QD) based multiplexed lateral flow immunoassay (xLFIA) for the simultaneous detection of egg allergen ovalbumin, crustacean allergen tropomyosin (TM) and sarcoplasmic calcium binding protein (SCP) was developed in this study. QD-labeled rabbit anti-ovalbumin, SCP and TM antibodies were applied as fluorescent detection probes. The chromatography system was optimized to reduce the mutual interference of different test lines. Visual and instrumental detection limits of the xLFIA were 0.1 and 0.05 μg/mL for SCP, both 0.05 μg/mL for ovalbumin and both 0.5 μg/mL for TM. As low as 0.10 % crab powder, 0.01 % egg white powder and 0.05 % shrimp powder could be detected in all three model foods using xLFIA. Besides, the xLFIA detection results of 23 of 28 commercial foods were consistent with ingredient labels. These findings indicate that the developed xLFIA is a practical tool for point-of-care detection of egg and crustacean allergens in processed and commercial foods.
Collapse
Affiliation(s)
- Yuhao Huang
- College of Food Science and Engineering, Ocean University of China, No.1299, Sansha Road, Qingdao, Shandong Province 266404, PR China
| | - Ranran Li
- College of Food Science and Engineering, Ocean University of China, No.1299, Sansha Road, Qingdao, Shandong Province 266404, PR China
| | - Wenye Zhu
- College of Food Science and Engineering, Ocean University of China, No.1299, Sansha Road, Qingdao, Shandong Province 266404, PR China
| | - Jinlong Zhao
- College of Food Science and Engineering, Ocean University of China, No.1299, Sansha Road, Qingdao, Shandong Province 266404, PR China
| | - Hao Wang
- College of Food Science and Engineering, Ocean University of China, No.1299, Sansha Road, Qingdao, Shandong Province 266404, PR China
| | - Ziye Zhang
- College of Food Science and Engineering, Ocean University of China, No.1299, Sansha Road, Qingdao, Shandong Province 266404, PR China
| | - Hong Lin
- College of Food Science and Engineering, Ocean University of China, No.1299, Sansha Road, Qingdao, Shandong Province 266404, PR China
| | - Wenjie Li
- Clinical Laboratory, Qingdao Women & Children Hospital, No.6, Tongfu Road, Qingdao, Shandong Province 266034, PR China.
| | - Zhenxing Li
- College of Food Science and Engineering, Ocean University of China, No.1299, Sansha Road, Qingdao, Shandong Province 266404, PR China.
| |
Collapse
|
3
|
Dang M, Wu L, Jin G, Yang C, Isah MB, Zhang X. Quantum Dot-Based Immunoassays: Unraveling Sensitivity Discrepancies and Charting Future Frontiers. Anal Chem 2024; 96:980-984. [PMID: 38194441 DOI: 10.1021/acs.analchem.3c04791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2024]
Abstract
The 2023 Nobel Prize in Chemistry honors the groundbreaking contributions of Alexei Ekimov, Louis Brus, and Moungi Bawendi to the field of quantum dots (QDs). In this spirit, we developed a direct competitive QD fluorescence immunoassay (dc-QD-FLISA) to detect aristolochic acid type I (AAI), a potent carcinogen found in herbal remedies. Unexpectedly, the dc-QD-FLISA exhibited lower sensitivity than that of an indirect competitive enzyme-linked immunosorbent assay (ic-ELISA), contrary to our initial expectations. This discrepancy in the sensitivity prompted a comprehensive analysis of the entire experimental process. We propose that steric hindrance between QDs and antigen-binding sites on antibodies may significantly diminish the binding efficiency, reducing sensitivity within the dc-QD-FLISA method. Furthermore, issues such as buffer conditions, antibody handling, and separation methods are also contributing factors. We recommend site-directed QD modification and stringent consideration of the experimental conditions. This study not only provides insights into QD-based immunoassays but also highlights the need for future advancements in immunoassay technology in terms of augmenting sensitivity and specificity, potentially revolutionizing disease diagnosis, biomarker discovery, and biomedical research.
Collapse
Affiliation(s)
- Mei Dang
- College of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong 723000, Shaanxi, China
- Department of Biological Sciences, Faculty of Science, National University of Singapore, 10 Keng Ridge Crescent, 119260 Singapore
| | - Longjiang Wu
- College of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong 723000, Shaanxi, China
| | - Gelin Jin
- College of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong 723000, Shaanxi, China
| | - Chenxuan Yang
- College of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong 723000, Shaanxi, China
| | - Murtala Bindawa Isah
- College of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong 723000, Shaanxi, China
| | - Xiaoying Zhang
- College of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong 723000, Shaanxi, China
- Department of Biomedical Sciences, Ontario Veterinary College, University of Guelph, N1G 2W1 Guelph, Ontario, Canada
| |
Collapse
|