申请人:AGENCY SCIENCE TECH & RES
公开号:WO2019059850A1
公开(公告)日:2019-03-28
The present invention relates to polycarbonate-based diblock polymers, nanoparticles comprising the diblock polymers and a therapeutic agent, in particular the therapeutic agent is attached to a magnetic moiety, and methods to prepare the diblock polymers and nanoparticles. Said diblock polymer comprises: (i) a first block polymer comprising of a polyether repeating unit; and (ii) a second block polymer comprising of a repeating unit of a general Formula I wherein (a) R1, R2, R3, R4, and R5 is each independently selected from the group comprising: hydrogen, halogen, alkyl group comprising 1 to 20 carbon atoms, and aryl group comprising 6 to 20 carbon atoms, (b) p and q is each independently an integer from 0 to 6, wherein p and q cannot both be 0, (c) A is a linker, and (d) B is an aromatic moiety with two adjacent hydroxyl groups, for example catechol moiety. In a preferred embodiment, the nanoparticles encapsulated with iron-salen complexed paclitaxel are formed for use in breast cancer treatment.
本发明涉及基于聚碳酸酯的二嵌段聚合物,包括含有该二嵌段聚合物和治疗剂的纳米颗粒,特别是治疗剂附着在磁性基团上,以及制备二嵌段聚合物和纳米颗粒的方法。所述二嵌段聚合物包括:(i)第一嵌段聚合物,包括聚醚重复单元;(ii)第二嵌段聚合物,包括一个通式I的重复单元,其中(a) R1、R2、R3、R4和R5分别独立地选自包括:氢、卤素、碳数为1至20的烷基和碳数为6至20的芳基的群体;(b) p和q分别是从0到6的整数,其中p和q不能同时为0;(c) A是连接剂;(d) B是一个带有两个相邻的羟基的芳香基团,例如邻苯二酚基团。在一个优选实施例中,封装有铁-萨伦络合紫杉醇的纳米颗粒被制备用于乳腺癌治疗。