This invention provides compositions and methods for enhancing delivery of drugs and other agents across epithelial tissues, including the skin, gastrointestinal tract, pulmonary epithelium, ocular tissues 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 conjugated to the reagent 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 25 residues in length.
这项发明提供了用于增强药物和其他药剂跨上皮组织传递的组合物和方法,包括皮肤、胃肠道、肺上皮、眼部组织等。这些组合物和方法还适用于跨过内皮组织传递,包括血脑屏障。这些组合物和方法利用了一种传递增强转运体,其具有足够的瓜二氮或酰胺侧链基团,以增强连接到试剂上的化合物跨越组织的一个或多个层的传递,与未连接的化合物相比。传递增强聚合物包括,例如,多精
氨酸分子,其长度最好在约6到25个残基之间。