PMID- 37679308 OWN - NLM STAT- MEDLINE DCOM- 20230928 LR - 20230928 IS - 1520-5118 (Electronic) IS - 0021-8561 (Linking) VI - 71 IP - 38 DP - 2023 Sep 27 TI - One-Step Purification of IgE Epitope-Specific Antibody Using Immunomagnetic Beads and Highly Sensitive Detection of Bovine beta-Lactoglobulin for the Prediction of Milk Allergenicity in Foods. PG - 14068-14078 LID - 10.1021/acs.jafc.3c03461 [doi] AB - Bovine beta-lactoglobulin (BLG) is a common allergen found in milk, and the immunoglobulin E (IgE) epitope plays a crucial role in cow milk allergy. Therefore, targeting the IgE epitope could be useful in accurately detecting BLG and assessing its allergenicity. However, producing an IgE epitope-specific antibody (IgE-EsAb) through traditional methods requires complex and time-consuming procedures. Here, IgE-EsAb was purified from rabbit anti-BLG sera by immunomagnetic beads in one step. Then, a sandwich ELISA (sELISA) based on the IgE-EsAb was developed to detect BLG and predict the potential milk allergenicity in foods. The obtained IgE-EsAb could specifically recognize the target IgE epitope of BLG and exhibited high affinity and specificity. The developed IgE-EsAb-based sELISA demonstrated an ultra-wide linear range of 3.9-1.28 x 10(5) ng/mL, with a limit of detection of 0.49 ng/mL for BLG. Additionally, the proposed immunoassay showed high specificity and recoveries (91.24-109.61%). The ability of the IgE-EsAb-based sELISA to evaluate the potential milk allergenicity in foods was validated using sera from cow milk allergy patients. These results suggest that immunomagnetic beads are an effective tool for rapidly obtaining the IgE-EsAb, and our proposed sELISA could be a reliable and user-friendly method for monitoring trace amounts of BLG and predicting the potential milk allergenicity of food samples. FAU - He, Shengfa AU - He S AUID- ORCID: 0000-0002-7048-6136 AD - School of Public Health and Health Management, Gannan Medical University, Ganzhou 341000, China. FAU - Xiong, Meng AU - Xiong M AD - School of Public Health and Health Management, Gannan Medical University, Ganzhou 341000, China. FAU - Li, Liming AU - Li L AD - First Affiliated Hospital of Gannan Medical University, Ganzhou 341000, China. FAU - Yan, Yan AU - Yan Y AD - School of Public Health and Health Management, Gannan Medical University, Ganzhou 341000, China. FAU - Li, Jinyu AU - Li J AD - First Affiliated Hospital of Gannan Medical University, Ganzhou 341000, China. FAU - Feng, Ziling AU - Feng Z AD - School of Public Health and Health Management, Gannan Medical University, Ganzhou 341000, China. FAU - Li, Yang AU - Li Y AD - School of Public Health and Health Management, Gannan Medical University, Ganzhou 341000, China. FAU - Zhao, Jiangqiang AU - Zhao J AD - School of Public Health and Health Management, Gannan Medical University, Ganzhou 341000, China. FAU - Dong, Yaping AU - Dong Y AD - School of Public Health and Health Management, Gannan Medical University, Ganzhou 341000, China. FAU - Li, Xin AU - Li X AD - State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China. FAU - Chen, Hongbing AU - Chen H AUID- ORCID: 0000-0002-4845-383X AD - State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China. FAU - Long, Caiyun AU - Long C AD - Ganzhou Center for Disease Control and Prevention, Ganzhou 341000, China. LA - eng PT - Journal Article DEP - 20230907 PL - United States TA - J Agric Food Chem JT - Journal of agricultural and food chemistry JID - 0374755 RN - 0 (Allergens) RN - 0 (Epitopes) RN - 0 (Lactoglobulins) RN - 37341-29-0 (Immunoglobulin E) SB - IM MH - Female MH - Humans MH - Cattle MH - Animals MH - Rabbits MH - *Allergens MH - Epitopes MH - Lactoglobulins/analysis MH - *Milk Hypersensitivity MH - Immunoglobulin E OTO - NOTNLM OT - IgE epitope-specific antibody OT - allergenicity assessment OT - bovine beta-lactoglobulin OT - immunomagnetic beads OT - sandwich ELISA EDAT- 2023/09/08 00:41 MHDA- 2023/09/28 06:42 CRDT- 2023/09/07 22:53 PHST- 2023/09/28 06:42 [medline] PHST- 2023/09/08 00:41 [pubmed] PHST- 2023/09/07 22:53 [entrez] AID - 10.1021/acs.jafc.3c03461 [doi] PST - ppublish SO - J Agric Food Chem. 2023 Sep 27;71(38):14068-14078. doi: 10.1021/acs.jafc.3c03461. Epub 2023 Sep 7.