Immunoactive compositions for improved oral delivery of...

A - Human Necessities – 61 – K

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A61K 47/42 (2006.01) A61K 9/14 (2006.01) A61K 47/12 (2006.01) A61K 47/22 (2006.01) A61K 47/46 (2006.01) A61P 37/04 (2006.01) A61K 39/00 (2006.01)

Patent

CA 2681159

The present invention concerns methods and compositions for improved oral delivery of bioactive agents, such as vaccines. In preferred embodiments, the compositions comprise at least one lectin, saponin, polyunsaturated fatty acid and/or isoflavone. In further embodiments, the compositions may further comprise at least one protease inhibitor, buffer and/or surfactant. In more preferred embodiments, the lectins, saponins, fatty acids, isoflavones and/or protease inhibitors may be derived from extracts, homogenates, finely ground powders or derivatives of plant or animal material, such as beans, nuts, peas, fish meal or krill. The relative amounts of various naturally occurring materials contained in the compositions may be selected to optimize the concentrations of one or more lectins, saponins, polyunsaturated fatty acids and/or isoflavones. The compositions are of use for oral delivery of a wide variety of bioactive agents, particularly protein or peptide based agents.

L'invention concerne des procédés et des compositions pour l'administration par voie orale améliorée d'agents bioactifs, tels que des vaccins. Dans des modes de réalisation privilégiés, les compositions comprennent au moins une lectine, une saponine, un acide gras polyinsaturé et/ou une isoflavone. Dans d'autres modes de réalisation, les compositions peuvent en outre comprendre au moins un inhibiteur de protéase, un tampon et/ou un agent tensioactif. Dans des modes de réalisation davantage préférés, les lectines, saponines, acides gras, isoflavones et/ou inhibiteurs de protéase peuvent être dérivés d'extraits, de broyats, de poudres finement broyées ou de dérivés de matières végétales ou animales, telles que des fèves, des noix, des pois, de la farine de poisson ou du krill. Les quantités relatives de diverses matières naturelles contenues dans les compositions peuvent être sélectionnées pour optimiser les concentrations d'une ou plusieurs lectines, saponines, acides gras insaturés et/ou isoflavones. Les compositions sont utiles pour l'administration par voie orale d'une grande variété d'agents bioactifs, notamment les agents à base de protéine ou de peptide.

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