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Luo L, Pan Y, Li Q, Zhang Y, Chen C, Shen J, Wang Z. Current progress in the detection of adrenergic receptor agonist residues in animal-derived foods. Trends Analyt Chem 2023. [DOI: 10.1016/j.trac.2022.116875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Qiao Q, Guo X, Wen F, Chen L, Xu Q, Zheng N, Cheng J, Xue X, Wang J. Aptamer-Based Fluorescence Quenching Approach for Detection of Aflatoxin M 1 in Milk. Front Chem 2021; 9:653869. [PMID: 33842437 PMCID: PMC8024576 DOI: 10.3389/fchem.2021.653869] [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: 01/15/2021] [Accepted: 02/18/2021] [Indexed: 11/13/2022] Open
Abstract
Aflatoxin M1 (AFM1), one of the most toxic mycotoxins, is a feed and food contaminant of global concern. In this study, we developed a fast and simple method for detection of AFM1 based on a structure-switching signaling aptamer. This aptasensor is based on the change in fluorescence signal due to formation of an AFM1/aptamer complex. To generate the aptasensor, the specific aptamer was modified with FAM (carboxyfluorescein), and their complementary DNAs (cDNA) were modified with a carboxytetramethylrhodamine (TAMRA) quenching group. In the absence of AFM1, the aptamers were hybridized with cDNA, resulting in quenching of the aptamer fluorescence due to the proximity of the aptamer's fluorophore to the quenching group on the cDNA. On the other hand, in the presence of AFM1, a structural switch in the aptamer was induced by formation of an AFM1/aptamer complex. Changes in the structure of the aptamer led to the release of the cDNA, causing the generation of a fluorescence signal. Thus, AFM1 concentrations could be quantitatively monitored based on the changes in fluorescences. Under optimized conditions, this assay exhibited a linear response to AFM1 in the range of 1-100 ng/mL and a limit of detection of 0.5 ng/mL was calculated. This proposed aptasensor was applied to milk samples spiked with a dilution series of AFM1, yielding satisfactory recoveries from 93.4 to 101.3%. These results demonstrated that this detection technique could be useful for high-throughput and quantitative determination of mycotoxin levels in milk and dairy products.
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Affiliation(s)
- Qinqin Qiao
- Laboratory of Quality and Safety Risk Assessment for Dairy Products of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
- College of Information Engineering, Fuyang Normal University, Fuyang, China
- Anhui Agricultural University, Hefei, China
| | - Xiaodong Guo
- Laboratory of Quality and Safety Risk Assessment for Dairy Products of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
- Milk and Dairy Product Inspection Center of Ministry of Agriculture and Rural Affairs, Beijing, China
| | - Fang Wen
- Laboratory of Quality and Safety Risk Assessment for Dairy Products of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
- Milk and Dairy Product Inspection Center of Ministry of Agriculture and Rural Affairs, Beijing, China
| | - Lu Chen
- Laboratory of Quality and Safety Risk Assessment for Dairy Products of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
- Milk and Dairy Product Inspection Center of Ministry of Agriculture and Rural Affairs, Beijing, China
| | - Qingbiao Xu
- College of Animal Sciences and Technology, Huazhong Agricultural University, Wuhan, China
| | - Nan Zheng
- Laboratory of Quality and Safety Risk Assessment for Dairy Products of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
- Milk and Dairy Product Inspection Center of Ministry of Agriculture and Rural Affairs, Beijing, China
| | | | | | - Jiaqi Wang
- Laboratory of Quality and Safety Risk Assessment for Dairy Products of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
- Milk and Dairy Product Inspection Center of Ministry of Agriculture and Rural Affairs, Beijing, China
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Wang L, Jiang W, Shen X, Li X, Huang XA, Xu Z, Sun Y, Chan SW, Zeng L, Eremin SA, Lei H. Four Hapten Spacer Sites Modulating Class Specificity: Nondirectional Multianalyte Immunoassay for 31 β-Agonists and Analogues. Anal Chem 2018; 90:2716-2724. [PMID: 29353474 DOI: 10.1021/acs.analchem.7b04684] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Immunoassay methods are important for monitoring β-agonists illegally used for reducing animal fat deposition in livestock. However, there is no simultaneous screening surveillance immunoassay for detecting various β-agonist chemicals that are possibly present in food. In this study, through the use of an R-(-)-salbutamol derivative as the immunizing hapten, an antibody recognizing 31 β-agonists and analogues was generated for the first time. Three-dimensional quantitative structure-activity relationship (3D QSAR) revealed that strong steric and hydrophobic fields around the hapten spacer near C-2, as well as a chirality at C-1', dominantly modulated the class specificity of the raised antibody. However, a hapten spacer linked at C-2' or C-1 would lead to a narrow specificity, and the spacer charge at C-6 could affect the raised antibody specificity spectrum. A class specificity competitive indirect enzyme-linked immunosorbent assay (ciELISA) was established with an ideal recovery ranging from 81.8 to 118.3% based on the obtained antibody. With a good agreement to the HPLC/MS method, the proposed ciELISA was confirmed to be reliable for the rapid surveillance screening assay of β-agonists in urine. This investigation will contribute to the rational design and control of the immunoassay specificity.
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Affiliation(s)
- Lanteng Wang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University , Guangzhou 510642, China
| | - Wenmeng Jiang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University , Guangzhou 510642, China
| | - Xing Shen
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University , Guangzhou 510642, China
| | - Xiangmei Li
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University , Guangzhou 510642, China
| | - Xin-An Huang
- Tropical Medicine Institute & South China Chinese Medicine Collaborative Innovation Center, Guangzhou University of Chinese Medicine , Guangzhou 510405, China
| | - Zhenlin Xu
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University , Guangzhou 510642, China
| | - Yuanming Sun
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University , Guangzhou 510642, China
| | - Shun-Wan Chan
- Faculty of Science & Technology, Technology & Higher Education Institute of Hong Kong , Hong Kong, China
| | - Lingwen Zeng
- South China Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences , Guangzhou 510530, China
| | - Sergei Alexandrovich Eremin
- Faculty of Chemistry, M.V. Lomonosov Moscow State University , 119991 Moscow, Russia.,A.N. Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences , 119071 Moscow, Russia
| | - Hongtao Lei
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University , Guangzhou 510642, China
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Liu F, Chen Z, Shen Y, Sun Y, Yang J, Wang H, Lei H, Xu Z. Hapten synthesis and production of specific antibody against 3-amino-5-morpholinomethyl-2-oxazolidone for immunoassay without derivatisation. FOOD AGR IMMUNOL 2017. [DOI: 10.1080/09540105.2017.1376038] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Affiliation(s)
- Fengyin Liu
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South People’s Republic of China Agricultural University, Guangzhou, People’s Republic of China
- College of Biology and Food Engineering, Guangdong University of Education, Guangzhou, People’s Republic of China
| | - Zijian Chen
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South People’s Republic of China Agricultural University, Guangzhou, People’s Republic of China
| | - Yudong Shen
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South People’s Republic of China Agricultural University, Guangzhou, People’s Republic of China
| | - Yuanming Sun
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South People’s Republic of China Agricultural University, Guangzhou, People’s Republic of China
| | - Jinyi Yang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South People’s Republic of China Agricultural University, Guangzhou, People’s Republic of China
| | - Hong Wang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South People’s Republic of China Agricultural University, Guangzhou, People’s Republic of China
| | - Hongtao Lei
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South People’s Republic of China Agricultural University, Guangzhou, People’s Republic of China
| | - Zhenlin Xu
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South People’s Republic of China Agricultural University, Guangzhou, People’s Republic of China
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