This invention provides compositions and methods for enhancing delivery of drugs and other agents across epithelial tissues, including into and across 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.
该发明提供了增强药物和其他药剂跨上皮组织传递的组合物和方法,包括进入和穿过眼组织等。这些组合物和方法还可用于跨内皮组织传递,包括血脑屏障。这些组合物和方法采用具有足够的
鸟氨酸或
酰胺基侧链基团的传递增强转运体,以增强与试剂结合的化合物跨越一层或多层组织的传递,相比未结合化合物。传递增强
聚合物包括,例如,长度在6至25个残基之间的聚精
氨酸分子。