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成纤维细胞激活蛋白(FAP)是癌症相关成纤维细胞(CAFs)的标志性蛋白，在90%以上的上皮癌中有高表达，而正常组织几乎不表达。因此，FAP是一个非常有潜力的靶点。放射性核素标记的FAP靶向分子探针可用于PET或SPECT显像，尤其是n 68Ga-FAP抑制剂(FAPIs)PET/CT在临床上已显示出良好的前景，为肿瘤的早期诊断、精确分期以及放射性核素治疗提供了一种新的思路。此外，FAP在某些非肿瘤疾病也有高表达，尤其是与纤维化相关的疾病。该文将对放射性核素标记的靶向FAP分子探针的研究进展做一综述。n “,”Fibroblast activation protein (FAP) is a marker protein of cancer-associated fibroblasts(CAFs). It is highly expressed in more than 90% of epithelial cancers and hardly expressed in normal tissues. Therefore, FAP is a very promising target. Radionuclide labeled FAP targeted molecular probes can be used for PET or SPECT imaging. In particular, n 68Ga-FAP inhibitors (FAPIs) PET/CT has shown good prospects in the clinic, providing a new idea for early diagnosis, accurate staging and radionuclide treatment of tumors. In addition, FAP is also highly expressed in certain non-tumor diseases, especially those related to fibrosis. In this article, the research progress of radionuclide-labeled FAP targeted molecular probes is reviewed.n