申请人:UNIVERSITY OF KANSAS
公开号:US20130189519A1
公开(公告)日:2013-07-25
A multi-arm, star-shaped polymer composition can be configured for drug delivery and imaging applications in vivo. The star polymer architecture can be synthesized using living radical polymerization techniques, including reversible addition-fragmentation chain transfer and macromolecular design via the interchange of xanthates with a broad range of reaction conditions and functional groups. The star-shaped polymeric carriers can be tailored for preferential delivery of chemotherapeutics into the tumor-draining lymphatics via subcutaneous, peritumoral or intratumoral injections. The carriers can be loaded with the chemotherapeutic agents from about 10% to about 25% w/w. In addition, the carriers can be loaded with imaging agents from about 5% to about 10% w/w. The molecular weights of the polymeric carriers can be about 40 kDa to about 130 kDa. The chemotherapeutics can be cisplatin, geldanamycin or nitric oxide-donating prodrugs. The imaging agent can be a near-infrared dye, such as IR820.
一种多臂星形聚合物组合物可配置用于体内药物输送和成像应用。星形聚合物结构可以使用活性自由基聚合技术合成,包括可逆加成-断裂链转移和通过与广泛的反应条件和功能基团进行黄酮交换的宏观设计。星形聚合物载体可以定制为通过皮下、肿瘤周围或肿瘤内注射将化疗药物优先输送至肿瘤引流淋巴管。载体可以装载化疗药物,负载量约为10%至25%(重量/重量)。此外,载体可以装载成像剂,负载量约为5%至10%(重量/重量)。聚合物载体的分子量可以约为40 kDa至130 kDa。化疗药物可以是顺铂、吉尔达那霉素或一氧化氮供体前药。成像剂可以是近红外染料,如IR820。