Adjuvant formulation comprising a submicron oil droplet emulsion
First Claim
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1. A method of stimulating an immune response in a host animal comprising:
- administering an antigen to said animal in the presence of an immunostimulating amount of an adjuvant composition consisting essentially of;
(1) a metabolizable oil, wherein the oil is present in an amount of 0.5% to 20% of the total volume and (2) an emulsifying agent, wherein the emulsifying agent is 0.01% to 2.5% by weight (w/w), and wherein said oil and said emulsifying agent are present in the form of an oil-in-water emulsion having oil droplets substantially all of which are about 100 nm to less than 500 nm in diameter and wherein said composition exists in the absence of any polyoxypropylene-polyoxyethylene block copolymer and in the absence of any muramyl peptide, and further wherein said adjuvant composition is capable of increasing the immune response to said antigen.
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Abstract
An adjuvant composition, comprising a metabolizable oil and an emulsifying agent, wherein the oil and the detergent are present in the form of an oil-in-water emulsion having oil droplets substantially all of which are less than 1 micron in diameter. In preferred embodiments, the emulsifying agent is also an immunostimulating agent, such as a lipophilic muramyl peptide. Alternatively, an immunostimulating agent separate from the emulsifying agent can be used.
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Citations
14 Claims
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1. A method of stimulating an immune response in a host animal comprising:
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administering an antigen to said animal in the presence of an immunostimulating amount of an adjuvant composition consisting essentially of;
(1) a metabolizable oil, wherein the oil is present in an amount of 0.5% to 20% of the total volume and (2) an emulsifying agent, wherein the emulsifying agent is 0.01% to 2.5% by weight (w/w), and wherein said oil and said emulsifying agent are present in the form of an oil-in-water emulsion having oil droplets substantially all of which are about 100 nm to less than 500 nm in diameter and wherein said composition exists in the absence of any polyoxypropylene-polyoxyethylene block copolymer and in the absence of any muramyl peptide, and further wherein said adjuvant composition is capable of increasing the immune response to said antigen. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of stimulating an immune response in a host animal comprising:
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administering an antigen to said animal in the presence of an immunostimulating amount of an adjuvant composition consisting essentially of;
(1) 5% by volume of squalene; and
(2) one or more emulsifying agents selected from the group consisting of polyoxyethylene sorbitan monooleate and sorbitan trioleate, wherein the total amount of emulsifying agent(s) present is 1% by weight (w/w);
wherein said squalene and said emulsifying agent(s) are present in the form of an oil-in-water emulsion having oil droplets substantially all of which are about 100 nm to less than 500 nm in diameter and wherein said composition exists in the absence of any polyoxypropylene-polyoxyethylene block copolymer and in the absence of any muramyl peptide, and further wherein said adjuvant composition is capable of increasing the immune response to said antigen.- View Dependent Claims (14)
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Specification