A series of carbohydrate-dye conjugates, as well as a method for detection of pathogenic or other organisms (e.g., bacteria) using the same are provided. The carbohydrate-dye conjugate can be enzymatically incorporated into live and active (viable) bacteria of interest for facile detection of said bacteria. The conjugate incorporation is achieved by utilizing one or more of the enzymes that are endogenous to the bacteria of interest, which can incorporate the conjugate via the conjugate's carbohydrate. A detectable signal is produced by the conjugate's dye only upon incorporation into the bacteria of interest, due to the changes in the dye's local environment upon incorporation. The conjugate may be metabolically incorporated into the fatty outer membrane of a bacterial cell wall, which provides a distinctly hydrophobic environment for the conjugate's dye, causing it to produce a detectable signal.
提供了一系列的
碳水化合物-
染料共轭物,以及使用相同的方法检测病原体或其他
生物体(例如细菌)。
碳水化合物-
染料共轭物可以被酶促地纳入感兴趣的活体和活跃(活性)细菌中,以便轻松检测所述细菌。通过利用一种或多种内源于感兴趣细菌的酶,可以通过
碳水化合物将共轭物纳入其中。仅当共轭物纳入感兴趣细菌时,由于
染料在纳入过程中局部环境的改变,才会产生可检测的信号。共轭物可以代谢地纳入细菌细胞壁的
脂肪外膜中,为共轭物的
染料提供一个明显疏
水的环境,导致其产生可检测的信号。