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Jia BZ, Chen FY, Yang XX, Hongsibsong S, Wang XX, Xu ZL, Luo L. De novo synthesis of a novel hapten and development of a monoclonal antibody-based immunoassay for the detection of dichlorvos and trichlorfon. Food Chem 2024; 452:139580. [PMID: 38744129 DOI: 10.1016/j.foodchem.2024.139580] [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: 01/17/2024] [Revised: 05/03/2024] [Accepted: 05/05/2024] [Indexed: 05/16/2024]
Abstract
The absence of high-affinity antibodies has hindered the development of satisfactory immunoassays for dichlorvos (DDVP) and trichlorfon (TCP), two highly toxic organophosphorus pesticides. Herein, the de novo synthesis of a novel anti-DDVP hapten was introduced. Subsequently, a specific anti-DDVP monoclonal antibody (Mab) was produced with satisfying affinity to DDVP (IC50: 12.4 ng mL-1). This Mab was highly specific to DDVP, and TCP could readily convert into DDVP under mild alkaline conditions. Leveraging this insight, an indirect competitive ELISA was successfully developed for simultaneous detection of DDVP and TCP. The limit of detection in rice, cabbage and apple for DDVP /TCP was found to be 12.1/14.6 μg kg-1, 7.3/8.8 μg kg-1 and 6.9/8.3 μg kg-1, respectively. This study not only provides an effective strategy for producing a high-quality anti-DDVP Mab but also affords a reliable and cost-effective tool suitable for high-throughput detection of DDVP and TCP in food samples.
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Affiliation(s)
- Bao-Zhu Jia
- College of Biology and Food Engineering, Guangdong University of Education, Guangzhou 510303, China; School of Health Sciences Research, Research Institute for Health Sciences, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Feng-Yan Chen
- College of Biology and Food Engineering, Guangdong University of Education, Guangzhou 510303, China; Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Xing-Xing Yang
- Shenzhen Bioeasy Biotechnology Co., Ltd., Shenzhen 518101, China
| | - Surat Hongsibsong
- School of Health Sciences Research, Research Institute for Health Sciences, Chiang Mai University, Chiang Mai, 50200, Thailand.
| | - Xing-Xing Wang
- Shenzhen Total-Testing Technology Co., Ltd., Shenzhen 518038, China
| | - Zhen-Lin Xu
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China.
| | - Lin Luo
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China.
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Chen Y, Ma S, Zhou M, Yao Y, Gao X, Fan X, Wu G. Advancements in the preparation technology of small molecule artificial antigens and their specific antibodies: a comprehensive review. Analyst 2024. [PMID: 39140248 DOI: 10.1039/d4an00501e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/15/2024]
Abstract
Small molecules find extensive application in medicine, food safety, and environmental studies, particularly in biomedicine. Immunoassay technology, leveraging the specific recognition between antigens and antibodies, offers a superior alternative to traditional physical and chemical analysis methods. This approach allows for the rapid and accurate detection of small molecular compounds, owing to its high sensitivity, specificity, and swift analytical capabilities. However, small molecular compounds often struggle to effectively stimulate an immune response due to their low molecular weight, weak antigenicity, and limited antigenic epitopes. To overcome this, coupling small molecule compounds with macromolecular carriers to form complete antigens is typically required to induce specific antibodies in animals. Consequently, the preparation of small-molecule artificial antigens and the production of efficient specific antibodies are crucial for achieving precise immunoassays. This paper reviews recent advancements in small molecule antibody preparation technology, emphasizing the design and synthesis of haptens, the coupling of haptens with carriers, the purification and identification of artificial antigens, and the preparation of specific antibodies. Additionally, it evaluates the current technological shortcomings and limitations while projecting future trends in artificial antigen synthesis and antibody preparation technology.
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Affiliation(s)
- Yaya Chen
- Center of Clinical Laboratory Medicine, Zhongda Hospital, Medical School of Southeast University, Nanjing, Jiangsu, China.
- Department of Laboratory Medicine, Medical School of Southeast University, Nanjing, Jiangsu, China.
| | - Shuo Ma
- Center of Clinical Laboratory Medicine, Zhongda Hospital, Medical School of Southeast University, Nanjing, Jiangsu, China.
- Department of Laboratory Medicine, Medical School of Southeast University, Nanjing, Jiangsu, China.
| | - Meiling Zhou
- Center of Clinical Laboratory Medicine, Zhongda Hospital, Medical School of Southeast University, Nanjing, Jiangsu, China.
- Department of Laboratory Medicine, Medical School of Southeast University, Nanjing, Jiangsu, China.
| | - Yuming Yao
- Center of Clinical Laboratory Medicine, Zhongda Hospital, Medical School of Southeast University, Nanjing, Jiangsu, China.
- Department of Laboratory Medicine, Medical School of Southeast University, Nanjing, Jiangsu, China.
| | - Xun Gao
- Center of Clinical Laboratory Medicine, Zhongda Hospital, Medical School of Southeast University, Nanjing, Jiangsu, China.
- Department of Laboratory Medicine, Medical School of Southeast University, Nanjing, Jiangsu, China.
| | - Xiaobo Fan
- Department of Laboratory Medicine, Medical School of Southeast University, Nanjing, Jiangsu, China.
| | - Guoqiu Wu
- Center of Clinical Laboratory Medicine, Zhongda Hospital, Medical School of Southeast University, Nanjing, Jiangsu, China.
- Department of Laboratory Medicine, Medical School of Southeast University, Nanjing, Jiangsu, China.
- Jiangsu Provincial Key Laboratory of Critical Care Medicine, Southeast University, Nanjing, 210009, Jiangsu, China
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Chen S, Guan T, Qian Z, Quan Q, Wang J, Li X, Wu S, Yan Y, Yao X, Zhang S, Lei H. A sensitive and quantitative immunochromatographic assay for simultaneous detection of three stimulant laxatives in slimming food. Food Chem 2022; 398:133861. [DOI: 10.1016/j.foodchem.2022.133861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 07/22/2022] [Accepted: 08/03/2022] [Indexed: 11/16/2022]
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