Embodiments of the synthesis, radiolabeling and biological applications of an activatable tracer that undergoes intramolecular cyclization and aggregation upon activation by cleavage of a blocking moiety are provided. The probes of the disclosure allow for target-controlled self-assembly of small molecules in living subjects for imaging and drug delivery. The aggregated nanoprobes of the disclosure may be detectable optically, by PET detection, magnetic resonance imaging, and the like depending on the detectable reporter attached to the nanoprobe.
提供了一种可激活示踪剂的合成、放射标记和
生物应用的实施例,该示踪剂在通过切除阻断基团激活时发生分子内环化和聚集。本公开的探针允许在活体中实现靶向控制的小分子自组装,用于成像和药物输送。根据附加到纳米探针上的可检测报告物,本公开的聚集纳米探针可以通过光学、PET检测、核磁共振成像等方式进行检测。