The present invention provides a nanoparticle including at least one poly(vinyl alcohol) (PVA) having a molecular weight of from about 10 kDa to about 200 kDa, substituted with one or more moieties selected from: a therapeutic agent having a boronic acid moiety, wherein the therapeutic agent is covalently linked to the PVA via a boronate ester bond; a crosslinking group having a disulfide moiety, wherein the crosslinking group is covalently linked to the PVA, and a porphyrin, wherein the porphyrin is covalently linked to the PVA. Use of the nanoparticles for tumor detection and the treatment of diseases, including methods for photodynamic therapy and photothermal therapy, are also described.
本发明提供了一种纳米粒子,包括至少一种分子量在约 10 kDa 至约 200 kDa 之间的聚
乙烯醇(PVA),其被一个或多个分子取代,这些分子选自:具有
硼酸分子的治疗剂,其中治疗剂通过
硼酸酯键与 PVA 共价连接;具有二
硫化物的交联基团,其中治疗剂通过
硼酸酯键与 PVA 共价连接:具有
硼酸分子的治疗剂,其中治疗剂通过
硼酸酯键与 PVA 共价连接;具有二
硫分子的交联基团,其中交联基团与 PVA 共价连接;以及
卟啉,其中
卟啉与 PVA 共价连接。还描述了纳米粒子在肿瘤检测和疾病治疗中的用途,包括光动力疗法和光热疗法的方法。