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Li J, Chen M, Ke S, Tian J, Yu H, Liu X, Yu BY. Generation of a high-affinity DNA aptamer for on-site screening of toxic aristolochic acid I in herbal medicines and botanical products. Anal Chim Acta 2023; 1264:341302. [PMID: 37230722 DOI: 10.1016/j.aca.2023.341302] [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: 02/26/2023] [Revised: 04/12/2023] [Accepted: 04/28/2023] [Indexed: 05/27/2023]
Abstract
Aristolochic Acid I (AAI) is an environmental and foodborne toxin found in the Aristolochia and Asarum species of plants that are widespread all over the world. Therefore, there is an urgent need to develop a sensitive and specific biosensor for identifying AAI. Aptamers as a powerful biorecognition element provide the most viable options for solving this problem. In this study, we used library-immobilized SELEX to isolate an AAI-specific aptamer with a KD value of 86 ± 13 nM. To verify the practicability of the selected aptamer, a label-free colorimetric aptasensor was designed. This aptasensor exhibited a low detection limit of 225 nM. Besides, it had been further applied for the determination of AAI in real samples and the recoveries ranged from 97.9% to 102.4%. In the future, AAI aptamer will provide a promising tool for safety evaluation in various fields of agriculture, food, and medication.
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Affiliation(s)
- Jiwei Li
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of TCM Evaluation and Translational Research, Research Center for Traceability and Standardization of TCMs, Cellular and Molecular Biology Center, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, PR China
| | - Meiqi Chen
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of TCM Evaluation and Translational Research, Research Center for Traceability and Standardization of TCMs, Cellular and Molecular Biology Center, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, PR China
| | - Sisi Ke
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of TCM Evaluation and Translational Research, Research Center for Traceability and Standardization of TCMs, Cellular and Molecular Biology Center, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, PR China
| | - Jiangwei Tian
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of TCM Evaluation and Translational Research, Research Center for Traceability and Standardization of TCMs, Cellular and Molecular Biology Center, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, PR China
| | - Haixiang Yu
- Department of Surgery, Duke University Medical Center, Durham, NC, 27710, USA.
| | - Xiufeng Liu
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of TCM Evaluation and Translational Research, Research Center for Traceability and Standardization of TCMs, Cellular and Molecular Biology Center, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, PR China.
| | - Bo-Yang Yu
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of TCM Evaluation and Translational Research, Research Center for Traceability and Standardization of TCMs, Cellular and Molecular Biology Center, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, PR China
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Wang X, Lu Q, Dou L, Liu M, Li P, Yu W, Yu X, Wang Z, Wen K. Broad-specificity indirect competitive enzyme-linked immunosorbent assay for aristolochic acids: Computer-aided hapten design and molecular mechanism of antibody recognition. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 859:159941. [PMID: 36347294 DOI: 10.1016/j.scitotenv.2022.159941] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 10/19/2022] [Accepted: 10/31/2022] [Indexed: 06/16/2023]
Abstract
Long-term dietary exposure of aristolochic acids (AAs)-contaminated food proved to be one of the main culprits of Endemic Nephropathy, renal failure; and urothelial cancer. The antibodies utilized in immunoassays for AAs suffer from low affinity and failure of recognition to the family of AAs. This study, we prepared a broad-specificity monoclonal antibody (mAb) 5H5 with highly and uniform affinity for AAs by help of computational chemistry fully exposing the AAs common structures of methoxy and hydroxyl groups. The mAb 5H5 exhibited half inhibitory concentrations of AAA, AAB, AAC, AAD were 0.03, 0.06, 0.05, 0.03 ng/mL. To explain the broad-specificity profile of mAb 5H5, molecular docking was performed. Results shown that multiple conformations of AAs can be flexibly oriented in the spacious cavity of single-chain variable fragment antibody (scFv) 5H5 and the specific hydron bonds were formed by ASN62 and GLY64 of scFV 5H5 to the nitro group of AAs which gave an explanation of the high cross-reactivity of mAb 5H5. The ELISA based on the broad-specificity mAb 5H5with detection limits of 0.04-0.11 μg/kg and 0.02-0.06 μg/kg for four AAs in flour and soil samples, respectively. The study provided a promising method for the family of AAs in environmental and food samples.
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Affiliation(s)
- Xiaonan Wang
- College of Veterinary Medicine, China Agricultural University, Beijing Key Laboratory of Detection Technology for Animal Derived Food Safety, Beijing Laboratory for Food Quality and Safety, 100193 Beijing, People's Republic of China
| | - Qingpeng Lu
- College of Veterinary Medicine, China Agricultural University, Beijing Key Laboratory of Detection Technology for Animal Derived Food Safety, Beijing Laboratory for Food Quality and Safety, 100193 Beijing, People's Republic of China
| | - Leina Dou
- College of Veterinary Medicine, China Agricultural University, Beijing Key Laboratory of Detection Technology for Animal Derived Food Safety, Beijing Laboratory for Food Quality and Safety, 100193 Beijing, People's Republic of China
| | - Minggang Liu
- College of Veterinary Medicine, China Agricultural University, Beijing Key Laboratory of Detection Technology for Animal Derived Food Safety, Beijing Laboratory for Food Quality and Safety, 100193 Beijing, People's Republic of China
| | - Peipei Li
- College of Veterinary Medicine, China Agricultural University, Beijing Key Laboratory of Detection Technology for Animal Derived Food Safety, Beijing Laboratory for Food Quality and Safety, 100193 Beijing, People's Republic of China
| | - Wenbo Yu
- College of Veterinary Medicine, China Agricultural University, Beijing Key Laboratory of Detection Technology for Animal Derived Food Safety, Beijing Laboratory for Food Quality and Safety, 100193 Beijing, People's Republic of China
| | - Xuezhi Yu
- College of Veterinary Medicine, China Agricultural University, Beijing Key Laboratory of Detection Technology for Animal Derived Food Safety, Beijing Laboratory for Food Quality and Safety, 100193 Beijing, People's Republic of China
| | - Zhanhui Wang
- College of Veterinary Medicine, China Agricultural University, Beijing Key Laboratory of Detection Technology for Animal Derived Food Safety, Beijing Laboratory for Food Quality and Safety, 100193 Beijing, People's Republic of China
| | - Kai Wen
- College of Veterinary Medicine, China Agricultural University, Beijing Key Laboratory of Detection Technology for Animal Derived Food Safety, Beijing Laboratory for Food Quality and Safety, 100193 Beijing, People's Republic of China.
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Lei H, Wang Z, Eremin SA, Liu Z. Application of Antibody and Immunoassay for Food Safety. Foods 2022; 11:foods11060826. [PMID: 35327249 PMCID: PMC8948748 DOI: 10.3390/foods11060826] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 03/07/2022] [Indexed: 11/16/2022] Open
Affiliation(s)
- Hongtao Lei
- Guangdong Province Key Laboratory of Food Quality and Safety/National-Local Joint Engineering Research Center for Machining and Safety of Livestock and Poultry Products, College of Food Science, South China Agricultural University, Guangzhou 510642, China;
- Correspondence:
| | - Zhanhui Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China;
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory for Food Quality and Safety, Beijing 100193, China
| | - Sergei A. Eremin
- Department of Chemical Enzymology, Faculty of Chemistry, M.V. Lomonosov Moscow State University, 119991 Moscow, Russia;
| | - Zhiwei Liu
- Guangdong Province Key Laboratory of Food Quality and Safety/National-Local Joint Engineering Research Center for Machining and Safety of Livestock and Poultry Products, College of Food Science, South China Agricultural University, Guangzhou 510642, China;
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