The present invention relates to the molecular sustained controlled release system constructed by the conjugation of molecules to be released with biodegradable polyester polymer via covalent bond and method for preparation thereof. In accordance with the present invention, the system may be formulated into microspheres, nanoparticles, or films. The molecular release rate from the above system can be regulated to be proportional to the chemical degradation rate of the biodegradable polyester polymers, resulting in near zero order kinetics profile of release without showing a burst effect. Moreover, the high loading efficiency of hydrophilic drugs can be achieved.
本发明涉及通过共价键将待释放的分子与可
生物降解聚酯聚合物结合而构建的分子持续控释系统,以及其制备方法。根据本发明,该系统可以制备成微球、纳米颗粒或薄膜。上述系统中的分子释放速率可以调节为与可
生物降解聚酯聚合物的
化学降解速率成比例,从而导致释放近似零级动力学剖面而不显示爆发效应。此外,可以实现亲
水药物的高装载效率。