Ceramic Nanoparticles for siRNA Delivery
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Solution Overview
Problem
Current siRNA therapy faces challenges such as enzymatic degradation, poor cellular penetration, and low efficacy due to difficulties in delivering biomolecules like siRNA across cellular membranes without causing immunological reactions or exposing them to degradation, which limits its therapeutic effectiveness and increases costs.
Innovation Solution
Development of particulate substances comprising a ceramic matrix with an aminofunctional group that promotes cell penetration and encapsulates biomolecules within pores, protecting them from degradation until release in the cytoplasm, using a process involving emulsion formation and ceramic precursor hydrolysis to create particles with controlled release properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If siRNA is delivered using viral vectors, then delivery efficiency is improved, but immunological reactions and difficulty in implementation occur
Solution Approach 1:
The patent uses non-viral ceramic nanoparticles as disposable delivery vehicles that avoid immunological reactions. These particles are designed for single-use delivery without the persistence and immune recognition issues of viral vectors, achieving effective siRNA delivery without triggering harmful immune responses
2Ease of operation
If siRNA is adsorbed onto nanoparticle surfaces, then delivery is enabled, but enzymatic degradation occurs prior to delivery
Solution Approach 1:
The patent embeds siRNA molecules within the porous interior structure of ceramic nanoparticles, nesting the biomolecule inside the particle matrix rather than adsorbing it on the surface. This internal positioning protects the siRNA from enzymatic degradation in the extracellular environment while maintaining delivery capability
Solution Approach 2:
The patent utilizes porous ceramic nanoparticles with controlled pore structures that can accommodate and protect siRNA molecules. The porous matrix provides both protection from degradation and pathways for cellular uptake and intracellular release
3Reliability
If siRNA is encapsulated within porous ceramic particles, then protection from degradation is achieved, but homogeneous distribution of aminofunctional groups is required for effective penetration
Solution Approach 1:
The patent employs controlled hydrolysis and condensation parameters during ceramic particle synthesis to ensure uniform distribution of aminofunctional groups throughout the particle matrix. By optimizing pH, temperature, and precursor ratios, homogeneous functional group distribution is achieved, enabling effective cellular penetration while maintaining protection
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 ceramic matrix particles effectively protect and deliver biomolecules, enhancing therapeutic efficacy by preventing enzymatic degradation and facilitating cellular uptake and release, potentially reducing treatment costs and improving clinical outcomes.
Implementation Method 1
particles of a ceramic matrix bearing an aminofunctional group, the aminofunctional group being capable of promoting penetration of the particles into cells
Implementation Method 2
a biomolecule disposed within pores of the particles, the biomolecule being releasable from the particles by dissolution of the ceramic matrix
Implementation Method 3
the biomolecule being releasable from the particles by dissolution of the ceramic matrix
Data Source
Figure 1
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AI summary
A particulate substance comprising particles of a ceramic matrix bearing a functional group, the functional group being capable of promoting penetration of the particles into cells, and a biomolecule disposed within pores of the particles, the biomolecule being releasable from the particles by dissolution of the ceramic matrix.