Microparticulated vaccines for the oral or nasal vaccination and boostering of animals including fish
First Claim
1. A method of preparing an immunogenic substance suitable for oral or nasal vaccination, wherein the immunogenic substance consists of a vaccine, a crosslinked mucoadhesive polymer, one or more sugars, one or more oligosaccharides and one or more electrolytes,wherein the one or more sugars are selected from the group consisting of fructose, sucrose, dextrose, and trehalose,wherein the one or more oligosaccharides are selected from the group consisting of inulin and frutcoologosaccharides (FOS), andwherein the mucoadhesive polymer is a polymer that is not a dimer,the method comprising:
- (a) dissolving a mucoadhesive polymer and the one or more oligosaccharides in an aqueous solution;
(b) mixing the vaccine with the resulting solution from step (a) to form a slurry;
(c) cross-linking the mucoadhesive polymer in the slurry with the one or more electrolytes to form hydrogel particles;
(d) soaking the hydrogel particles in a solution saturated with one or more sugars to make semi-dry particles; and
(e) drying the semi-dry particles, whereby the immunogenic substance is formed.
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Accused Products
Abstract
The invention relates to a composition and a method for manufacturing semi-dry or dry particles containing a mucoadhesive polymer and a bioactive agent such as, but not limited to, an Immunogenic Substance (e.g., a vaccine), that allows the oral or nasal administration and delivery of the bioactive agent essentially unaltered to mucosal surfaces in the animal, including an aquatic animal.
153 Citations
22 Claims
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1. A method of preparing an immunogenic substance suitable for oral or nasal vaccination, wherein the immunogenic substance consists of a vaccine, a crosslinked mucoadhesive polymer, one or more sugars, one or more oligosaccharides and one or more electrolytes,
wherein the one or more sugars are selected from the group consisting of fructose, sucrose, dextrose, and trehalose, wherein the one or more oligosaccharides are selected from the group consisting of inulin and frutcoologosaccharides (FOS), and wherein the mucoadhesive polymer is a polymer that is not a dimer, the method comprising: -
(a) dissolving a mucoadhesive polymer and the one or more oligosaccharides in an aqueous solution; (b) mixing the vaccine with the resulting solution from step (a) to form a slurry; (c) cross-linking the mucoadhesive polymer in the slurry with the one or more electrolytes to form hydrogel particles; (d) soaking the hydrogel particles in a solution saturated with one or more sugars to make semi-dry particles; and (e) drying the semi-dry particles, whereby the immunogenic substance is formed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method of preparing an immunogenic substance suitable for oral or nasal vaccination,
wherein the immunogenic substance consists of a vaccine, a cross-linked mucoadhesive polymer, one or more sugars, one or more oligosaccharides, one or more electrolytes, and an additional agent selected from the group consisting of a phospholipid, beta glucan and a combination thereof, wherein the one or more sugars are selected from the group consisting of fructose, sucrose, dextrose, and trehalose, wherein the one or more oligosaccharides are selected from the group consisting of inulin and fructooligosaccharides (FOS), and wherein the mucoadhesive polymer is a polymer that is not a dimer, the method comprising: -
(a) dissolving a mucoadhesive polymer and the one or more oligosaccharides in an aqueous solution; (b) mixing the vaccine with the resulting solution from step (a) to form a slurry; (c) adding the additional agent to the aqueous solution of step (a) or the slurry of step (b); (d) cross-linking the mucoadhesive polymer in the slurry with the one or more electrolytes to form hydrogel particles; (e) soaking the hydrogel particles in a solution saturated with one or more sugars to make semi-dry particles; and (f) drying the semi-dry particles, whereby the immunogenic substance is formed. - View Dependent Claims (22)
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Specification