Phytate Microparticles for Vaccine Adjuvant Antigen Binding
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Solution Overview
Problem
Current vaccine adjuvants, particularly aluminum-based ones, face challenges in antigen binding strength, particle size, and metabolic fate, leading to suboptimal immune responses and potential side effects, necessitating the development of alternative adjuvants with improved properties.
Innovation Solution
Mineral microparticles comprising phytic acid salts with multivalent cations or organic polycations, such as calcium or magnesium, which exhibit enhanced antigen binding capabilities and stability, allowing for effective adsorption and delivery of biomolecules, including vaccines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If aluminum-based adjuvants are used to enhance immune response, then antigen binding is achieved, but antigen binding strength is insufficient and side effects occur
Solution Approach 1:
The patent changes the chemical composition parameters by replacing aluminum-based adjuvants with calcium phosphate-based adjuvants. This parameter change achieves stronger antigen binding while maintaining immune response enhancement and reducing side effects, directly resolving the contradiction between binding strength and reliability.
Solution Approach 2:
The patent uses composite materials by combining calcium phosphate with specific surface treatments and molecular structures to create adjuvants with enhanced antigen binding capabilities. The composite structure allows simultaneous achievement of strong binding, reliable immune response, and reduced harmful effects.
2Reliability
If adjuvant load is increased to improve immune response, then immune response is enhanced, but side effects increase
Solution Approach 1:
The patent changes the adjuvant composition from aluminum-based to calcium phosphate-based, which fundamentally alters the safety profile. This parameter change allows achieving enhanced immune response at lower adjuvant loads with reduced side effects, resolving the contradiction between immune response and harmful factors.
3Reliability
If aluminum adjuvants are used for antigen delivery, then antigen is delivered, but metabolic fate is unfavorable compared to calcium phosphate
Solution Approach 1:
The patent changes the metabolic parameters by substituting aluminum with calcium phosphate, which has favorable metabolic fate as both calcium and phosphate are essential elements in human metabolism. This maintains effective antigen delivery while improving stability and metabolic compatibility.
4Ease of manufacture
If particle size is increased for adjuvant formulation, then manufacturing is easier, but antigen presentation in particulate form is reduced
Solution Approach 1:
The patent optimizes the particle size parameters of calcium phosphate adjuvants to achieve an optimal range that balances manufacturing ease with effective antigen presentation. The controlled particle size ensures both manufacturability and reliable particulate antigen presentation for immune stimulation.
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
These phytic acid-based microparticles demonstrate improved antigen binding properties and stability, enabling reduced adjuvant loads, enhanced immune responses, and tolerance to heat sterilization, making them suitable alternatives to traditional aluminum-based adjuvants.
Implementation Method 1
Mineral microparticles comprising phytic acid salts with multivalent cations or organic polycations, such as calcium or magnesium, which exhibit enhanced antigen binding capabilities and stability, allowing for effective adsorption and delivery of biomolecules
Data Source
AI summary
The present invention relates to mineral micro-particles comprising phytate (inositol hexaphosphate, IP6). More particularly, the invention provides salts of phytic acid with multivalent metal ions such as Ca2+ and Mg2+ for use in biomolecules delivery or adsorption systems, methods for their production and uses thereof, such as for use as a vaccine adjuvant.