申请人:Cappelletti Enrico
公开号:US20080008649A1
公开(公告)日:2008-01-10
New and improved compounds for use in diagnostic imaging or therapy having the formula M-N—O—P-G, wherein M is a metal chelator having the structure:
wherein R
1
-R
5
and FG are as defined herein (in the form complexed with a metal radionuclide or not), N—O—P is the linker containing at least one non-alpha amino acid with a cyclic group, at least one substituted bile acid or at least one non-alpha amino acid, and G is the GRP receptor targeting peptide. In the preferred embodiment, M is an Aazta metal chelator or a derivative thereof.
Methods for imaging a patient and/or providing radiotherapy or phototherapy to a patient using the compounds of the invention are also provided. Methods and kits for preparing a diagnostic imaging agent from the compound is further provided. Methods and kits for preparing a radiotherapeutic agent are further provided. Novel methods of treating prostate tumors or of delaying the progression of prostate tumors are also provided, including, methods of treating bone or soft tissue metastases of prostate cancer, methods for treating hormone sensitive and hormone refractory prostate cancer, methods for delaying the progression of hormone sensitive prostate cancer, for facilitating combination therapy in patients with hormone sensitive prostate cancer and for decreasing aberrant vascular permeability in patients with hormone sensitive prostate cancer.
新的和改进的化合物可用于诊断成像或治疗,其化学式为M-N—O—P-G,其中M是具有以下结构的金属螯合剂:
其中R1-R5和FG如此定义(以金属放射性核素或未配合的形式),N—O—P是含有至少一个非α氨基酸环状基团、至少一个取代胆酸或至少一个非α氨基酸的连接物,而G是GRP受体靶向肽。在首选实施例中,M是Aazta金属螯合剂或其衍生物。本发明还提供了使用该化合物对患者进行成像和/或提供放射治疗或光治疗的方法。还提供了制备诊断成像试剂的方法和试剂盒。还提供了制备放射治疗试剂的方法和试剂盒。还提供了治疗前列腺肿瘤或延缓前列腺肿瘤进展的新方法,包括治疗前列腺癌骨骼或软组织转移的方法,治疗激素敏感和激素难治性前列腺癌的方法,延缓激素敏感前列腺癌进展的方法,促进激素敏感前列腺癌患者联合治疗的方法以及降低激素敏感前列腺癌患者异常血管渗透性的方法。