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- W4308496995 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." @default.
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- W4308496995 date "2023-02-01" @default.
- W4308496995 modified "2023-10-17" @default.
- W4308496995 title "Broad-specificity indirect competitive enzyme-linked immunosorbent assay for aristolochic acids: Computer-aided hapten design and molecular mechanism of antibody recognition" @default.
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- W4308496995 doi "https://doi.org/10.1016/j.scitotenv.2022.159941" @default.
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