Targeted Whole-Cell Antigen Particles for APC Uptake
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Solution Overview
Problem
Current cancer vaccines are limited by the inability to effectively deliver both water-soluble and water-insoluble cancer antigens to antigen-presenting cells, leading to insufficient immune activation against diverse cancer antigens, and existing targeting methods result in inefficient phagocytosis by non-specific cells.
Innovation Solution
A nano-sized or micron-sized targeting delivery system with a targeting head is developed, solubilizing whole-cell components, including both water-soluble and water-insoluble components, to actively target antigen-presenting cells, enhancing immune activation through ligand-receptor binding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If passive targeting by particle size is used to deliver cancer antigens to antigen-presenting cells, then the delivery system can be simple, but the antigen presentation efficiency to T cells is insufficient
Solution Approach 1:
The patent introduces a targeting head as an intermediary component that binds to specific receptors on antigen-presenting cells, enabling active targeting. This mediator enhances the interaction between the delivery system and target cells, improving antigen presentation efficiency without complicating the overall delivery system structure.
Solution Approach 2:
The patent modifies the particle size parameter to fall within the optimal range of 1-1000 nm for effective phagocytosis by antigen-presenting cells. This parameter optimization ensures both ease of manufacture and high antigen presentation efficiency by matching the biological uptake characteristics of target cells.
2Ease of manufacture
If only water-soluble components are used in cancer vaccines, then the vaccine preparation is simpler, but the comprehensive antigen loading capacity is limited
Solution Approach 1:
The patent applies solubilization treatment to convert water-insoluble cellular components into soluble forms, enabling their incorporation into the vaccine. This parameter change (solubility transformation) allows comprehensive antigen loading while maintaining vaccine preparation feasibility through standardized solubilization protocols.
Solution Approach 2:
The patent creates a composite vaccine formulation that includes both originally water-soluble and solubilized water-insoluble components. This composite approach maximizes antigen loading capacity by incorporating diverse cellular components while maintaining vaccine integrity through unified formulation processes.
3Loss of time
If a limited number of cancer antigens are used in vaccines, then the vaccine development is faster and cheaper, but the vaccine cannot cover most cancer antigens in patients
Solution Approach 1:
The patent segments cancer cell components into water-soluble and water-insoluble fractions, then applies different processing methods to each. This segmentation enables comprehensive antigen extraction and processing, increasing antigen coverage breadth while maintaining manageable development processes through systematic classification and processing.
Solution Approach 2:
The patent performs preliminary solubilization treatment on cancer cell components before vaccine formulation. This preliminary action ensures that both water-soluble and water-insoluble antigens are properly prepared and loaded into the delivery system, maximizing antigen coverage without delaying the vaccine development timeline.
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 system improves the delivery and presentation of whole-cell components to antigen-presenting cells, activating a robust immune response against cancer cells, thereby enhancing cancer prevention and treatment efficacy.
Implementation Method 1
water-insoluble components are solubilized with the solubilizer
Implementation Method 2
the targeting head bonds to molecules on surface of specific cells or tissues to assist the particles to enter cells or tissues
Implementation Method 3
it can be phagocytosed by antigen-presenting cells such as dendritic cells and B cells
Data Source
AI summary
A targeting delivery system loaded with whole-cell components, which relates to the technical field of immunotherapy. The targeting delivery system is a nano-sized or micron-sized particle with a target head on the surface, and the particle is loaded with whole-cell components of cancer cells or cancer tissues; the whole-cell components are water-soluble ingredients and water-insoluble ingredients of whole cells in cells or tissues, and the water-insoluble ingredients are dissolved by a solubilizer; and the target head binds to a molecule on the surface of a specific cell or tissue, so as to help the particle to enter the cell or tissue. According to the targeting delivery system, a specific solubilizer is used to solubilize the water-insoluble part, which allows same to be dissolved in an aqueous solution, so that the whole-cell antigens of the water-soluble ingredients and the water-insoluble ingredients in cancer cells or tissues can be combined to prepare a cancer vaccine. In addition, the target head capable of targeting antigen-presenting cells is added to improve the phagocytosis efficiency of the antigen-presenting cells in an active targeting manner, thereby improving the effect of preventing or treating cancer.