The present invention relates to novel compositions comprising polymeric moieties covalently attached to therapeutic agents, wherein the therapeutic agent is attached to the polymeric moiety through a tether. By selecting from a variety of tether groups and targeting ligands the polymers present methods for controlled delivery of the therapeutic agents. The invention also relates to methods of treating subjects with the therapeutic compositions described herein.
本发明涉及一种新型组合物,其中包含共价连接到治疗剂上的聚合物基团,治疗剂通过一种纽带连接到聚合物基团。通过从多种纽带基团和靶向
配体中进行选择,聚合物提供了治疗剂的可控释放方法。本发明还涉及使用所述治疗组合物治疗受试者的方法。