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.

Esta invenção fornece composições e métodos realçando a entrega das drogas e dos outros agentes através dos tecidos epithelial, including a pele, do intervalo gastrointestinal, do epithelium pulmonary, dos tecidos ocular e do gosto. As composições e os métodos são também úteis para a entrega através dos tecidos endothelial, including a barreira do cérebro do sangue. As composições e os métodos empregam um transporter realçando da entrega que tenha os moieties suficientes do sidechain do guanidino ou do amidino para realçar a entrega de um composto conjugated ao reagent através de um ou mais camada do tecido, comparado ao composto non-conjugated. Os polímeros entrega-realçando incluem, para o exemplo, as moléculas da poly-arginina que estão preferivelmente entre aproximadamente 6 e 25 resíduos no comprimento.

 
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