Described herein are compositions and methods that confine Cerenkov light to a localized area for targeted treatment and/or imaging of tumor cells. In certain embodiments, such compositions include a Cerenkov-activated tagging agent comprising a payload and a covalent binding unit such as an azide. The payload can be an imaging agent, a contrast agent, and/or a therapeutic. In certain embodiments, a radiolabelled biomarker (e.g., 18F-FDG (fluorodeoxyglucose), 18F-FLT (fluorothymidine)) or other radiolabelled tumor cell targeting agent that emits Cerenkov luminescence is also administered. Upon local illumination by the Cerenkov luminescence at or near the location of the tumor cells, the payload (the imaging agent, contrast agent, and/or therapeutic) is activated. In this way, activation of the imaging agent, contrast agent, and/or therapeutic agent is limited to the region at or near the location of the tumor cells.
本文描述了一种将Cerenkov光限制在局部区域以针对肿瘤细胞进行治疗和/或成像的组合物和方法。在某些实施例中,这些组合物包括一个Cerenkov激活的标记剂,其中包括一个荷载和一个共价结合单元,例如一个
叠氮化物。荷载可以是成像剂、对比剂和/或治疗剂。在某些实施例中,也可以给予放射性标记的
生物标记物(例如18F-FDG(
氟脱氧
葡萄糖)、18F-FLT(
氟胸腺
嘧啶))或其他放射性标记的针对肿瘤细胞的靶向剂,其发射Cerenkov发光。当在肿瘤细胞的位置或附近局部照明时,荷载(成像剂、对比剂和/或治疗剂)被激活。通过这种方式,成像剂、对比剂和/或治疗剂的激活仅限于肿瘤细胞位置或附近的区域。