Hydrophobic Moiety of Capsaicinoids Haptens Enhancing Antibody Performance in Immunoassay: Evidence from Computational Chemistry and Molecular Recognition
作者:Yuchen Bai、Hui Jiang、Yingjie Zhang、Leina Dou、Minggang Liu、Wenbo Yu、Kai Wen、Jianzhong Shen、Yuebin Ke、Xuezhi Yu、Zhanhui Wang
DOI:10.1021/acs.jafc.1c03657
日期:2021.9.1
hapten1–4 showed an approximately 1000-fold increase in affinity and significantly improved recognition profiles for CPCs. The molecular recognition study showed that the high affinity of the antibody from new haptens mainly originated from hydrophobic forces. An indirect competitive enzyme-linked immunosorbent assay based on a monoclonal antibody from hapten1 was developed and exhibited limits of detection
我们以前发现对半抗原的免疫反应与分子疏水性呈正相关。用于废油中辣椒素 (CPC) 免疫测定的抗体具有低亲和力和对结构类似物的松散识别。为了解决这个问题,我们设计了四个新的半抗原 (hapten1-4),最大限度地暴露了疏水烷烃链(CPC 的非常见部分),并根据我们的研究结果有望产生对 CPC 具有高亲和力和准确识别的抗体。该假设首先被计算化学和动物免疫相继证实。与四个报道的暴露亲水香草酰胺部分(CPCs和其他香草醛生物碱的共同结构)的半抗原(hapten5-8)相比,来自 hapten1-4 的抗血清显示亲和力增加了大约 1000 倍,并显着改善了 CPC 的识别谱。分子识别研究表明,新半抗原抗体的高亲和力主要来源于疏水力。开发了一种基于 hapten1 单克隆抗体的间接竞争性酶联免疫吸附测定法,对油中四种 CPC 的检测限低至 0.73-3.29 μg/kg,对其他八种香兰素生物碱的交叉反应不显着。在以前的报告中从未实现过。