Compositions for oral delivery of active agents

A - Human Necessities – 61 – K

Patent

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Details

A61K 9/51 (2006.01) A61K 38/00 (2006.01) A61K 38/28 (2006.01) A61K 47/42 (2006.01) A61K 47/48 (2006.01)

Patent

CA 2151742

Compositions and methods for the oral administration of drugs and other active agents are provided. The compositions comprise an active agent carrier particle attached to a binding moiety which binds specifically to a target molecule present on the surface of a mammalian enterocyte. The binding moiety binds to the target molecule with a binding affinity or avidity sufficient to initiate endocytosis or phagocytosis of particulate active agent carrier so that the carrier will be absorbed by the enterocyte. The active agent will then be released from the carrier to the host's systemic circulation. In this way, degradation of degradation-sensitive drugs, such as polypeptides, in the intestines can be avoided while absorption of proteins and polypeptides from the intestinal tract is increased.

Compositions et procédés destinés à l'administration orale de médicaments et d'autres principes actifs. Ces compositions comprennent une particule de transport d'agent actif fixée à une fraction de liaison qui se lie spécifiquement à une molécule cible présente sur la surface d'un entérocyte de mammifère. La fraction de laiaison se lie à la molécule cible avec une affinité ou une avidité de liaison suffisante pour amorcer l'endocytose ou la phagocytose de la particule de transport d'agent actif, de sorte que cette dernière va être absorbée par l'entérocyte. L'agent actif sera ensuite libéré de la particule de transport dans la circulation systémique de l'hôte. De cette manière, on évite la dégradation de médicaments sensibles à la dégradation, tels que les polypeptides, dans l'intestin, tout en augmentant l'absorption de protéines et de polypeptides à partir du tractus intestinal.

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