Self-assembling Protein Nanoparticles for Nucleic Acid Delivery
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current vaccination methods lack efficient delivery systems for immunostimulatory nucleic acids, such as CpG oligodeoxynucleotides, which are essential for inducing a strong immune response.
Innovation Solution
The development of self-assembling protein nanoparticles (SAPNs) that encapsulate immunostimulatory nucleic acids, specifically CpG oligodeoxynucleotides, providing a delivery system that enhances immune response induction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional vaccination methods are used, then the delivery of immunostimulatory nucleic acids is simple, but the immune response induction is insufficient
Solution Approach 1:
The patent encapsulates immunostimulatory nucleic acids (CpG ODN) inside protein nanoparticle cavities, creating a nested structure where the nucleic acid is protected within the protein shell. This nesting approach enhances immune response while maintaining delivery feasibility through self-assembly mechanisms.
Solution Approach 2:
The protein nanoparticle serves as an intermediary carrier between the immunostimulatory nucleic acid and the immune system. The nanoparticle facilitates efficient delivery and presentation of CpG ODN to immune cells, thereby enhancing immune response induction without requiring direct administration of the nucleic acid alone.
2Reliability
If immunostimulatory nucleic acids are used, then the immune activation is strong, but the delivery and stability in vivo are problematic
Solution Approach 1:
The nucleic acid is nested within the protein nanoparticle cavity, which protects it from nucleases and other degrading factors in the biological environment. This encapsulation maintains the stability and integrity of the immunostimulatory nucleic acid while preserving its ability to activate the immune system.
Solution Approach 2:
The protein nanoparticle forms a protective shell around the nucleic acid, providing a barrier that enhances stability in vivo. The shell structure protects the nucleic acid from degradation while allowing it to maintain its immunostimulatory function upon delivery to immune cells.
3Reliability
If CpG oligodeoxynucleotides are administered, then the immune response is enhanced, but the delivery efficiency to immune cells is insufficient
Solution Approach 1:
The protein nanoparticle acts as an intermediary that enhances delivery efficiency by facilitating the transport of CpG ODN to immune cells. The nanoparticle's properties enable efficient cellular uptake and presentation of the nucleic acid to immune cells, thereby improving delivery efficiency while maintaining immune response enhancement.
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 use of SAPNs effectively increases the immune response and immunogenicity of vaccines by encapsulating CpG nucleic acids, leading to enhanced antibody titers and immune activation.
Implementation Method 1
A self-assembling protein nanoparticle (SAPN) consisting of a multitude of building blocks
Data Source
AI summary
The present invention relates to self-assembling protein nanoparticles encapsulating immunostimulatory nucleid acids. Furthermore, the invention relates to the use of such nanoparticles for vaccination.