A PSMA targeting peptide derivative for radiotherapy, which is a structural molecule developed for diagnosis or treatment of prostate cancer, as prostate-specific membrane antigen (PSMA) is a protein present on the surface of healthy prostate cells, which is often at a high level of expression on the surface of prostate cancer cells, and the molecular composition of PSMA inhibitor is mainly composed of glutamic acid, urea and lysine, in addition to the linker of the present invention, PSMA inhibitor can be combined with a chelating agent and truncated Evans Blue, which can be labeled with radionuclides Ga-67, Ga-68, In-111, Lu-177, Cu-64 or Y-90, used for image analysis and analysis of human prostate cancer tumor pattern as a new PSMA targeting peptide receptor radionuclide therapy (PRRT), and which has a longer half-life in vivo and is featured by specific binding of PSMA for radiotherapy diagnosis or treatment.
一种针对前列腺癌诊断或治疗的结构分子,即针对PSMA(前列腺特异性膜抗原)的靶向肽衍
生物放射治疗,PSMA是一种存在于健康前列腺细胞表面的蛋白质,在前列腺癌细胞表面通常表达
水平较高。PSMA
抑制剂的分子组成主要由谷
氨酸、
尿素和赖
氨酸组成,除了本发明的连接剂外,PSMA
抑制剂还可以与
螯合剂和截短的埃文斯蓝结合,可以用放射性核素Ga-67、Ga-68、In-111、Lu-177、Cu-64或Y-90标记,用于图像分析和人类前列腺癌肿瘤模式分析的新型PSMA靶向肽受体放射性核素治疗(PRRT),其在体内具有较长的半衰期,并具有特异性结合PSMA的特点,用于放射治疗诊断或治疗。