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Food Allergen Epitope Mapping
Journal of Agricultural and Food Chemistry ( IF 5.7 ) Pub Date : 2018-06-20 00:00:00 , DOI: 10.1021/acs.jafc.8b01967
Changqi Liu 1 , Shridhar K. Sathe 2
Affiliation  

With the increased global awareness and rise in food allergies, a multifold interest in food allergens is evident. The presence of undeclared food allergens results in expensive food recalls and increased risks of anaphylaxis for the sensitive individuals. Regardless of the allergenic food, the immunogen needs to be identified and detected before making any efforts to inactivate/eliminate it. In type I food allergies, protein immunogen cross-links immunoglobulin E, leading to basophil/mast cell degranulation, resulting in the symptoms that range from mild irritation to anaphylaxis. A portion/part of the protein, known as the epitope, can interact with either antibodies to elicit allergic reactions or T-cell receptors to initiate allergic sensitization. Antibody-recognized epitopes can be either a linear sequence of amino acids (linear epitope) or a three-dimensional motif (conformational epitope), while T-cell-receptor-recognized epitopes are exclusively linear peptides. Identifying and characterizing human-allergy-relevant epitopes are important for allergy diagnosis/prognosis, immunotherapy, and developing food processing methods that can reduce/eliminate immunogencity/immunoreactivity of the allergen.

中文翻译:

食物过敏原表位定位

随着全球意识的增强和食物过敏的增加,人们对食物过敏原的兴趣日益浓厚。未声明的食物过敏原的存在会导致昂贵的食物召回并增加敏感个体的过敏反应风险。不管是哪种致敏食品,在采取任何措施使其灭活/消除之前,都必须先识别和检测免疫原。在I型食物过敏中,蛋白质免疫原使免疫球蛋白E交联,导致嗜碱细胞/肥大细胞脱粒,导致症状从轻度刺激到过敏反应不等。蛋白质的一部分/部分,称为表位,可以与抗体相互作用以引发过敏反应,也可以与T细胞受体相互作用以引发过敏性致敏作用。抗体识别的表位可以是氨基酸的线性序列(线性表位)或三维基序(构象性表位),而T细胞受体识别的表位仅是线性肽。鉴定和表征与人类过敏相关的表位对于过敏诊断/预后,免疫疗法以及开发可减少/消除过敏原的免疫原性/免疫反应性的食品加工方法很重要。
更新日期:2018-06-20
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