[EN] MINIGASTRIN DERIVATES, IN PARTICULAR FOR USE IN CCK2 RECEPTOR POSITIVE TUMOUR DIAGNOSIS AND/OR TREATMENT<br/>[FR] DÉRIVÉS DE MINIGASTRINE DESTINÉS, EN PARTICULIER, À ÊTRE UTILISÉS DANS LE DIAGNOSTIC ET/OU LE TRAITEMENT DE TUMEURS POSITIVES POUR LE RÉCEPTEUR CCK2
申请人:SCHERRER INST PAUL
公开号:WO2019057445A1
公开(公告)日:2019-03-28
It is therefore the objective of the present invention to provide minigastrin derivates which further improve the accumulation in CCK-2 receptor positive tumours by simultaneously very low accumulation in other organs, e.g. the kidneys. This objective is achieved according to the present invention by a minigastrin derivate having the formula: X-Z-Ala-Tyr-Gly-Trp-Met-Asp-Phe-NH2 (Y), wherein at least one of the connecting or terminal amide bonds between, before or after the amino acids of the sequence Z, Ala, Tyr, Gly, Trp, Met, Asp, Phe and NH2 or Y (C-terminal) is replaced by a 1,4-disubstituted or a 1,5-disubstituted 1,2,3-triazole, while X stands for a chemical group attached to the peptide for the purpose of diagnostic and/or therapeutic intervention at CCK-2 receptor relevant diseases, Y stands for C-terminal modifications of the peptide, such as amide, primary and secondary amides, free carboxylic acids and carboxylic ester derivatives including but not limited to amides and esters derived from linear or branched alkyl-,alkenyl-, alkynyl- aromatic-, and heterocyclic alcohols, and Z stands for a linker or DGlu* wherein DGlu* stands for a chain of DGlu having 1 to 6 repetitions (-DGlu-to -DGlu-DGlu-DGlu-DGlu-DGlu-DGlu-). These minigastrin derivates have a high specific internalization, excellent IC50 values and sufficient plasma stability.
因此,本发明的目标是提供米尼胃泌素衍生物,进一步改善在CCK-2受体阳性肿瘤中的积累,同时在其他器官(例如肾脏)中具有非常低的积累。根据本发明,通过具有以下式的米尼胃泌素衍生物实现了这一目标:X-Z-Ala-Tyr-Gly-Trp-Met-Asp-Phe-NH2(Y),其中Z、Ala、Tyr、Gly、Trp、Met、Asp、Phe和NH2或Y(C-末端)序列中的氨基酸之间的连接或末端酰胺键中的至少一个被1,4-二取代或1,5-二取代的1,2,3-三唑所取代,其中X代表连接到肽上的化学基团,用于在CCK-2受体相关疾病中进行诊断和/或治疗干预,Y代表肽的C-末端修饰,例如酰胺、一级和二级酰胺、游离羧基和羧酸酯衍生物,包括但不限于来自线性或支链烷基、烯烃基、炔烃基、芳香基和杂环醇的酰胺和酯,Z代表连接剂或DGlu*,其中DGlu*代表具有1到6个重复的DGlu链(-DGlu-to -DGlu-DGlu-DGlu-DGlu-DGlu-DGlu-)。这些米尼胃泌素衍生物具有高特异性内化、优异的IC50值和足够的血浆稳定性。