A method of detecting peroxynitrite in a sample is described comprising the steps of: (a) providing a complex of a saccharide with an aryl boronate compound of formula (I): Fp - L1 - Z - L2 - Ar - B(OH)2 (I) wherein: Fp comprises a fluorophore; L1 and L2 are linker groups; Z is a fluorescence switch; and Ar is optionally substituted aryl; (b) contacting said aryl boronate- saccharide complex with said sample, whereby peroxynitrite in said sample cleaves said aryl boronate- saccharide complex to produce a compound of formula (II): F - L1 - Z - L2 - Ar - OH (II); and (c) detecting a decrease in a fluorescence intensity of said fluorophore resulting from said cleavage reaction in step (b). Peroxynitrite reacts quantitatively, rapidly, and selectively in step (b) of the reaction, whereby medical conditions associated with elevated peroxynitrite can be diagnosed. Also provided are compounds of formula (I) for use in the methods.
描述了一种检测样品中
过氧亚硝酸根的方法,包括以下步骤:(a)提供一种糖苷与
化学式(I)的芳基
硼酸酯化合物的复合物:Fp - L1 - Z -
L2 - Ar - B(OH)2 (I),其中:Fp包括一种荧光团;L1和
L2是连接基团;Z是荧光开关;Ar是可选择取代的芳基;(b)将所述芳基
硼酸酯-糖苷复合物与所述样品接触,使得样品中的
过氧亚硝酸根裂解所述芳基
硼酸酯-糖苷复合物,产生
化学式(II)的化合物:F - L1 - Z -
L2 - Ar - OH (II);(c)检测由步骤(b)中的裂解反应导致的荧光团强度减少。
过氧亚硝酸根在反应的步骤(b)中定量、快速、选择性地反应,从而可以诊断与升高的
过氧亚硝酸根相关的医学状况。还提供了用于该方法的
化学式(I)的化合物。