Lecithin-Polymer Vaccine Adjuvant for Mucosal Antigen Delivery
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Solution Overview
Problem
Existing vaccine delivery methods, particularly for mucosal surfaces, face challenges in effectively targeting vaccine antigens to mucosal surfaces and underlying lymphoid tissues, leading to inadequate immune responses and inefficiencies in large-scale vaccinations.
Innovation Solution
A novel adjuvant composition comprising lecithin and a polymer, preferably acrylic, forms a matrix structure that enhances adsorption and absorption of vaccine antigens onto mucosal surfaces, facilitating contact with lymphoid tissues, and can be administered via mucosal surfaces or conventional routes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If vaccine antigens are delivered to mucosal surfaces, then immune response at the portal of entry is improved, but effective delivery to mucosal surfaces and underlying lymphoid tissue is difficult to achieve
Solution Approach 1:
The patent uses an adjuvant composition as an intermediary substance that facilitates the delivery of vaccine antigens to mucosal surfaces and underlying lymphoid tissue. The adjuvant composition includes components that promote adsorption of antigens to the mucosal surface and enhance their absorption by lymphoid tissue, thereby solving the delivery effectiveness problem while maintaining reliable immune response generation
Solution Approach 2:
The patent modifies the physical and chemical parameters of the vaccine delivery system by incorporating specific adjuvant components with particular molecular properties. These parameter changes enable the vaccine composition to interact more effectively with mucosal surfaces and lymphoid tissue, improving delivery efficiency without compromising immune response reliability
2Productivity
If vaccines are administered to large numbers of animals individually, then vaccination coverage is improved, but labor intensity and cost increase significantly
Solution Approach 1:
The patent enables vaccines to be administered through feed or water, allowing animals to self-administer the vaccine by consuming the contaminated feed or water. This eliminates the need for manual injection by personnel, thereby maintaining high vaccination coverage while dramatically reducing labor intensity and operational complexity in large-scale animal vaccination programs
3Reliability
If parenteral vaccines are used, then systemic immune response is achieved, but circulating antibodies interfere with vaccine effectiveness
Solution Approach 1:
The patent uses an adjuvant composition as an intermediary that protects the vaccine antigen from interference by circulating antibodies. The adjuvant components facilitate antigen delivery to mucosal surfaces and lymphoid tissue through mechanisms that bypass the neutralizing effect of maternal antibodies, thereby achieving reliable systemic immune response despite the presence of interfering circulating antibodies
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The adjuvant composition induces robust mucosal and systemic immune responses, overcoming interference from circulating antibodies and reducing the labor and cost of large-scale vaccinations.
Implementation Method 1
forms a matrix structure that enhances adsorption and absorption of vaccine antigens onto mucosal surfaces
Implementation Method 2
enhances adsorption and absorption of vaccine antigens onto mucosal surfaces, facilitating contact with lymphoid tissues
Data Source
AI summary
Methods are provided for preparing and delivering an adjuvant for vaccines including lecithin, polymer and one or more additives. The polymer is preferably polyacrylic acid-based. The additive is preferably one or more of a glycoside and a sterol. The method of preparation includes hydrating lecithin and a polymer in saline or water and mixing the lecithin and polymer to form the adjuvant. Additives can be included prior to or after hydration of the lecithin and polymer.