Alginate-based vaccine compositions
First Claim
1. A vaccine composition for oral administration to vertebrate species to stimulate an immune response in the vertebrate species against a preselected antigen through contact of the antigen with a gut-associated lymphoid tissue of the vertebrate species, said composition comprising an antigen formulation in a delivery vehicle consisting essentially of an alginate gel, said antigen being present in an amount effective to induce an immune response in said vertebrate, wherein the alginate gel enhances the immune response against the preselected antigen.
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Abstract
A vaccine composition including an antigen dispersed in an alginate gel is described. The alginate gel is preferably in the form of discrete particles coated with a polymer. Vaccination of vertebrate species can be accomplished by administering the alginate-based vaccine compositions orally.
57 Citations
17 Claims
- 1. A vaccine composition for oral administration to vertebrate species to stimulate an immune response in the vertebrate species against a preselected antigen through contact of the antigen with a gut-associated lymphoid tissue of the vertebrate species, said composition comprising an antigen formulation in a delivery vehicle consisting essentially of an alginate gel, said antigen being present in an amount effective to induce an immune response in said vertebrate, wherein the alginate gel enhances the immune response against the preselected antigen.
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3. A vaccine composition for oral administration to vertebrate species to stimulate an immune response in the vertebrate species against a preselected antigen through contact of the antigen with a gut-associated lymphoid tissue of the vertebrate species, said composition comprising an antigen formulation in a delivery vehicle consisting essentially of an alginate gel and a polymer coating on the alginate gel, said antigen being present in an amount effective to induce an immune response in said vertebrate, wherein the alginate gel enhances the immune response against the preselected antigen.
- 5. A vaccine composition for oral administration to ruminant species to stimulate an immune response in said species against a preselected antigen, said composition comprising the preselected antigen in an amount effective to induce an immune response in said species, said antigen dispersed in alginate gel in particulate form, and a hydrophilic carrier matrix for said antigen-containing alginate gel particles, said alginate gel particles being dispersed within the hydrophilic carrier matrix, wherein said carrier matrix is formed to carry at least some of the dispersed particles into the post-ruminal portion of the digestive tract of said ruminant species.
- 13. A vaccine composition consisting essentially of an antigen, in an amount effective to induce an immune response to said antigen, an alginate gel, and a pharmaceutically acceptable carrier, wherein the alginate gel enhances the immune response against the antigen.
- 15. A vaccine composition consisting essentially of an alginate gel, an antigen dispersed in the alginate gel, a polymer coating on the alginate gel, and a pharmaceutically acceptable carrier, wherein the alginate gel enhances the immune response against the preselected antigen.
Specification