申请人:Children's Medical Center Corporation
公开号:US11071714B2
公开(公告)日:2021-07-27
Compositions comprising polymers comprising one or more ketal, monothioketal, and/or thioketal bonds are provided, as well as related methods and kits. In some embodiments, a polymer may comprise one or more repeat units comprising one or more ketal, monothioketal, and/or thioketal bonds and a precursor of a pharmaceutically active agent. The precursor of the pharmaceutically active agent may be located in the backbone or may be a pendant group. The polymer may degrade in certain environments (e.g., aqueous environments, acidic environments, in vivo, etc.) to produce the pharmaceutically active agent and other biocompatible degradation products, such as certain ketones, alcohols, and/or thiols. Regardless of the location of the precursor of the pharmaceutically active agent in the repeat unit(s), the polymer may have a prolonged degradation time and/or release of the pharmaceutically active agent in certain environments. Various compositions, described herein, may be particularly well suited for applications requiring extended release of pharmaceutically active agents, such as the treatment of ophthalmic disorders.
本发明提供了由包含一个或多个酮键、单硫酮键和/或硫酮键的聚合物组成的组合物以及相关方法和试剂盒。在某些实施方案中,聚合物可包含一个或多个由一个或多个酮键、单硫酮键和/或硫酮键组成的重复单元和一种药用活性剂的前体。药用活性剂的前体可以位于骨架中,也可以是一个悬挂基团。聚合物可在特定环境(如水环境、酸性环境、体内等)中降解,产生药用活性剂和其他生物相容性降解产物,如某些酮、醇和/或硫醇。无论药用活性剂前体在重复单元中的位置如何,聚合物在某些环境中都可能会延长降解时间和/或释放药用活性剂。本文所述的各种组合物可能特别适用于需要延长药用活性剂释放时间的应用,如眼科疾病的治疗。