News Release

花生特异性抗体的选择性抑制

Peer-Reviewed Publication

Proceedings of the National Academy of Sciences

Covalent heterobivalent inhibitor binding to the antigen binding site

image: Covalent heterobivalent inhibitor binding to the antigen binding site (red) and a secondary binding site (orange) of an antibody (blue), and forming a covalent bond to the antibody (black). view more 

Credit: Image courtesy of Peter Edward Deak and Basar Bilgicer.

科研人员报告了一种严重花生过敏的可能的疗法。与过敏特异性IgE抗体结合的过敏原蛋白引发可能致命的过敏反应,诸如花生过敏。Basar Bilgicer 及其同事开发了一种基于纳米颗粒的化验方法,从而筛选过敏花生蛋白的针对来自16名花生过敏病人的IgE抗体的部分即表位。这组作者识别出了能够在来自几乎全部病人的血清样本中引发强烈的过敏反应的两个表位。这组作者改造了被设计成选择性且不可逆地与IgEs结合的称为共价异二价抑制剂(cHBIs)分子,它们能识别这两个表位,因此持久地阻止了IgEs与花生蛋白结合和引发过敏反应。这些共价异二价抑制剂(cHBIs)在体外环境中与过敏病人血清中的IgE更强烈地结合,并且阻止了过敏原与病人的IgE结合。用共价异二价抑制剂(cHBIs)治疗,抑制了来自16名病人之中的14名病人的血清样本的对粗花生提取物的80%以上的过敏应答。这组作者说,这些结果提示,共价异二价抑制剂(cHBIs)可能构成一种过敏治疗方法的基础。

###


Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.