Lipid-Coated Silicon Nanoparticles for Stable Orthosilicic Acid Release
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Solution Overview
Problem
Existing delivery systems for pharmaceutical and cosmetic active ingredients face challenges in achieving controlled and slow-release delivery, stability, and biocompatibility, particularly due to issues with silicon-based carriers that do not effectively control the release of orthosilicic acid (OSA) and often result in polymerization, leading to safety concerns and inefficient delivery.
Innovation Solution
A method involving the surface treatment of silicon nanoparticles with lipids and amino acids to control the hydrolysis rate, stabilizing the release of orthosilicic acid and active agents, ensuring a controlled release profile.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If silicon-based carrier materials are used for controlled release delivery, then delivery control is improved, but polymerization occurs leading to safety concerns
Solution Approach 1:
The patent introduces orthosilicic acid (OSA) as an intermediary substance that mediates between the silicon-based carrier material and the biological system. OSA is released in a controlled manner from the silicon carrier, providing the beneficial controlled release effect while preventing direct polymerization of the silicon material itself. The lipid and amino acid coating further mediates the release process, ensuring OSA is released gradually without causing harmful polymerization.
Solution Approach 2:
The patent changes the chemical state and release parameters of the silicon-based carrier by coating it with lipids and amino acids. This coating modifies the hydrolysis rate of the silicon material, controlling the release of OSA in a predictable manner. The parameter change from rapid uncontrolled polymerization to controlled hydrolysis and gradual OSA release resolves the safety concern while maintaining delivery control.
2Speed
If topical delivery systems are used to deliver active agents, then penetration capability is improved, but stability of biological compounds deteriorates
Solution Approach 1:
The patent applies preliminary action by pre-coating the silicon nanoparticle carrier with lipids and amino acids before delivering the active agent. This pre-prepared coating creates a stable protective environment that maintains the stability of biological compounds during delivery while enabling effective skin penetration. The coating is applied in advance to prevent degradation before the active agent reaches its target.
3Productivity
If silicon nanoparticles are hydrolyzed to release orthosilicic acid, then delivery effectiveness is improved, but uncontrolled release rate causes safety issues
Solution Approach 1:
The lipid and amino acid coating acts as an intermediary layer between the silicon nanoparticle core and the external environment. This intermediary controls the hydrolysis process by regulating water access to the silicon surface, thereby controlling the release rate of orthosilicic acid. The coating ensures reliable and predictable release kinetics while maintaining high delivery effectiveness.
Solution Approach 2:
The patent changes the hydrolysis rate parameter of silicon nanoparticles through surface coating. The lipid and amino acid layer modifies the chemical reactivity of the silicon surface, reducing the hydrolysis rate from rapid and uncontrolled to slow and controlled. This parameter change enables reliable delivery effectiveness while preventing safety issues associated with uncontrolled release.
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 method enables stable and controlled release of active agents, enhancing biocompatibility and safety by regulating the hydrolysis of silicon nanoparticles to orthosilicic acid, allowing for effective delivery to target sites.
Implementation Method 1
treating the surface of the silicon nanoparticles with at least one lipid and at least one amino acid... controlling the release of orthosilicic acid (OSA)... regulating the hydrolysis of silicon nanoparticles to orthosilicic acid
Data Source
AI summary
A method for promoting the controlled binding and release of a bioactive or pharmaceutical agent from a composition comprising silicon nanoparticles, wherein the silicon nanoparticles comprise at least 50% by weight silicon, the method comprising treating the surface of the silicon nanoparticles with at least one lipid, and treating the surface of the silicon nanoparticles with at least one amino acid, wherein the ratio of lipid to silicon is from 1:1 to 15:1. Also related compositions and methods.