The present invention relates to a novel class of phenylboronic acid complexing reagents useful for the preparation of bioconjugates, and the method of making and using such reagents. In the present invention, in the place of prior art Avidin-Biotin and Digoxigenin-anti-Digoxigenin systems, phenylboronic acid complexing reagents are utilized in conjunction with phenylboronic acid reagents (many of which are known in the prior art) to facilitate chemical conjugation without the use of intermediary biological macromolecules. Reagents suitable for the modification of a bioactive species for the purpose of incorporating a phenylboronic acid complexing moiety for subsequent conjugation to a different bioactive species having pendant phenylboronic acid moieties are of General Formula I or General Formula II. ##STR1## wherein group X is selected from either H, OH, NH.sub.2, NHCH.sub.3, NHOH and NHOCH.sub.3, wherein group Y is selected from either O, S and NH, and wherein group Z comprises a spacer which either separates the boronic acid complexing moiety from group R, as in General Formula I, or seperates two boronic acid complexing moieties, as in General Formula II. Group R is a reactive electrophilic or nucleophilic moiety suitable for reaction of the phenylboronic acid complexing reagent with a bioactive species.
本发明涉及一种新型苯
硼酸络合试剂类,用于制备
生物共轭物,并且涉及制备和使用这种试剂的方法。在本发明中,利用苯
硼酸络合试剂代替了先前的Avidin-Biotin和Digoxigenin-anti-Digoxigenin系统,与苯
硼酸试剂(其中许多在先前的技术中已知)一起使用,以促进
化学共轭而不使用中介
生物大分子。适用于修饰
生物活性物种以将苯
硼酸络合基团并入到具有悬挂苯
硼酸基团的不同
生物活性物种中的试剂为通式I或通式II。其中,基团X从H、OH、NH.sub.2、NHCH.sub.3、NHOH和NHOCH.sub.3中选择,基团Y从O、S和NH中选择,基团Z包括一个间隔物,该间隔物将
硼酸络合基团从基团R中分离出来,如通式I中所示,或将两个
硼酸络合基团分离开来,如通式II中所示。基团R是适用于将苯
硼酸络合试剂与
生物活性物种反应的反应性亲电性或亲核性基团。