This invention provides compositions and methods for enhancing delivery of drugs and other agents across a biological barrier, including epithelial tissues such as the skin, gastrointestinal tract, pulmonary epithelium, and the like. The compositions and methods are also useful for delivery across endothelial tissues, including the blood brain barrier. The compositions and methods employ a delivery enhancing transporter that has sufficient guanidino or amidino sidechain moieties to enhance delivery of a compound across one or more layers of the tissue, compared to the non-conjugated compound. The delivery-enhancing polymers include, for example, poly-arginine molecules that are preferably between about 6 and 50 residues in length.
本发明提供了增强药物和其他药剂跨越
生物屏障的组合物和方法,包括上皮组织例如皮肤、胃肠道、肺上皮等。该组合物和方法也适用于通过内皮组织跨越血脑屏障。该组合物和方法采用了具有足够的
鸟氨酸或酰胺基侧链基团的增强运输体,以增强化合物跨越组织的一个或多个层次的递送,相对于非结合化合物。增强递送的聚合物包括例如在6到50个残基之间的聚精
氨酸分子。