Activity-based probe compounds for use in labeling a cysteine protease are provided. The compounds are targeted to the protease through a specific targeting element. The compounds additionally include a detectable element, such as a fluorescent label, a radiolabel, or a chelator. In some cases, the compounds additionally include a quenching element that is released upon reaction with the protease. Also provided are compositions comprising the compounds and methods for using the compounds, for example in labeling a protease in an animal and in visualizing a tumor in an animal.
提供用于标记半胱
氨酸
蛋白酶的活性探针化合物。这些化合物通过特定的靶向元素定位到
蛋白酶。这些化合物还包括可检测元素,如荧光标记、放射性标记或
螯合剂。在某些情况下,这些化合物还包括一种在与
蛋白酶反应时释放的熄灭元素。还提供包含这些化合物的组合物和使用这些化合物的方法,例如在动物中标记
蛋白酶和在动物中可视化肿瘤。