Nanoplatforms for arginase, indoleamine 2,3-dioxygenase and tryptophan 2,3-dioxygenase detection by posttranslational modification
申请人:Kansas State University Research Foundation
公开号:US10376599B2
公开(公告)日:2019-08-13
A nanoplatform assembly for detection of arginase, indoleamine 2,3-dioxygenase 1, and/or tryptophan 2,3-dioxygenase. The nanoplatform comprises an oligopeptide, which is used as a linker between two particles. More preferably, the linker is comprised of an oligopeptide containing a substrate for the target enzyme, where the substrate is chemically or physically modified by the target enzyme (but not cleaved). A central particle with a plurality of oligopeptide-tethered detectable particles and a plurality of directly attached detectable particles is described. Posttranslational modification of the oligopeptide leads to changes in the detectable signals from the first and/or second particles in the nanoplatform, which can be correlated to enzyme activity and concentration.
一种用于检测精氨酸酶、吲哚胺 2,3-二氧化酶 1 和/或色氨酸 2,3-二氧化酶的纳米平台组件。纳米平台由寡肽组成,寡肽用作两个颗粒之间的连接体。更优选的是,连接体由含有目标酶底物的寡肽组成,其中底物被目标酶化学或物理修饰(但不被裂解)。本文描述了一种中心颗粒,它具有多个寡肽系留的可检测颗粒和多个直接连接的可检测颗粒。寡肽的翻译后修饰会导致纳米平台中第一和/或第二颗粒的可检测信号发生变化,这些变化可与酶的活性和浓度相关联。