The invention provides a method for the formation of a tissue-targeting thorium complex, said method comprising; a) forming an octadentate chelator comprising four hydroxypyridinone (HOPO) moieties, substituted in the N-position with a methyl group, and a coupling moiety terminating in a carboxylic acid group; b) coupling said octadentate chelator to at least one tissue-targeting moiety targeting HER2; and c) contacting said tissue-targeting chelator with an aqueous solution comprising an ion of at least one alpha-emitting thorium isotope. A method of treatment of a neoplastic or hyperplastic disease comprising admistration of such a tissue-targeting thorium complex, as well as the complex and corresponding pharmaceutical formulations are also provided
该发明提供了一种形成组织靶向
钍配合物的方法,所述方法包括:a)形成一个含有四个
羟基吡啶酮(
HOPO)基团的八齿
螯合剂,N-位置上取代有一个甲基基团,并且末端具有一个羧基的偶联基团;b)将所述八齿
螯合剂偶联到至少一个靶向HER2的组织靶向基团上;c)将所述组织靶向
螯合剂与含有至少一个α放射性
钍同位素离子的
水溶液接触。还提供了一种治疗肿瘤性或增生性疾病的方法,包括给予这种组织靶向
钍配合物的治疗,同时还提供了该配合物及相应的制药配方。