Disclosed are imaging agents having the following Formula I:
wherein F is a near infrared fluorophore, S is an enzymatically cleavable oligopeptide, Q is a fluorescence quencher molecule, and M is a moiety selected from the group consisting of PEG or derivative thereof and a targeting ligand, and wherein F, Q and M are linked to separate amino acids of the enzymatically cleavable oligopeptide. Compositions comprising such compounds, as well as methods of use, methods of identifying a cell or a population of cells in vivo expressing a protease of interest, and methods of treating a disease through imaging are also disclosed.
揭示了具有以下公式I的成像剂:其中F是近红外荧
光色素,S是酶可切割寡肽,Q是荧光猝灭剂分子,M是选择自P
EG或其衍
生物和靶向
配体组成的一组中的一种的基团,其中F、Q和M与酶可切割寡肽的不同
氨基酸连接。还揭示了包含这种化合物的组合物,以及使用方法,用于识别体内表达感兴趣
蛋白酶的细胞或细胞群的方法,以及通过成像治疗疾病的方法。