Compositions and methods for efficient delivery of therapeutic agents in vivo are provided. Typically, the compositions are in the form of polymeric particles formed from one or more therapeutic agent complexed with a polycationic polymer which is further encapsulated in one or more amphiphilic polymers, preferably diblock copolymer of a polyalkylene oxide and a polyester such as poly(D,L-lactide)-poly(ethylene glycol) (PLA-PEG). In the preferred embodiments, the chemotherapeutic agent reduces, or inhibits N-glycosylation of one or more receptor tyrosine kinases of cancer cells. Methods of using the particles to treat cancer are also provided.
本文提供了在体内有效输送治疗剂的组合物和方法。典型的组合物是由一种或多种治疗剂与多阳离子聚合物络合而成的聚合物颗粒,该聚合物颗粒进一步封装在一种或多种两亲性聚合物中,最好是聚环氧烷和聚酯如聚(D,L-内酰胺)-聚
乙二醇(P
LA-P
EG)的二嵌段共聚物。在优选的实施方案中,化疗剂可减少或抑制癌细胞中一种或多种受体
酪氨酸激酶的 N-糖基化。还提供了使用颗粒治疗癌症的方法。