作者:Oleksandr Koniev、Sergii Kolodych、Zoljargal Baatarkhuu、Johann Stojko、Jitka Eberova、Jean-Yves Bonnefoy、Sarah Cianférani、Alain Van Dorsselaer、Alain Wagner
DOI:10.1021/acs.bioconjchem.5b00440
日期:2015.9.16
Thiols are among the most frequently used functional groups in the field of bioconjugation. While there exists a variety of heterobifunctional reagents that allow for coupling thiols to other functions (e.g., amines, carboxylic acids), there is no specific reagent for creating heteroconjugates using two different thiols. In response to the ever-increasing demand for bioconjugation tools, we have developed p-(maleimide)-phenylpropionitrile (MAPN)—an efficient reagent for kinetically resolved thiol-to-thiol coupling. In a comparative study with its closest commercially available analogue, p-phenylenedimaleimide, MAPN has shown substantial advantages for the preparation of thiol–thiol heteroconjugates. Namely, an antibody–drug conjugate (ADC) with mertansine (DM1), conjugated to the cysteine residues of Trastuzumab, was prepared for the first time.
硫醇是生物共轭领域中最常用的官能团之一。虽然存在多种允许将硫醇与其他官能团(例如胺、羧酸)偶联的异双功能试剂,但没有特定的试剂用于使用两种不同的硫醇创建杂合物。为了满足对生物偶联工具不断增长的需求,我们开发了对(马来酰亚胺)-苯基丙腈(MAPN)——一种用于动力学解析硫醇与硫醇偶联的有效试剂。在与其最接近的市售类似物对苯二甲酰亚胺的比较研究中,MAPN 在制备硫醇-硫醇杂合物方面显示出巨大的优势。即,首次制备了与曲妥珠单抗的半胱氨酸残基缀合的美坦辛(DM1)的抗体药物缀合物(ADC)。