Gold Nanoparticle-steroid Complex for Inflammatory Disease
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Solution Overview
Problem
Current therapeutic agents for inflammatory diseases, such as arthritis, often have significant side effects and do not effectively address the crosstalk between synoviocytes and macrophages, limiting their anti-inflammatory efficacy.
Innovation Solution
A gold nanoparticle-steroid complex is developed, where a steroid anti-inflammatory agent is loaded onto gold nanoparticles coated with PEG via covalent or non-covalent bonds, to create a therapeutic agent that reduces pro-inflammatory responses and promotes macrophage repolarization from M1 to M2 phenotype.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high-dose intra-articular corticosteroid injection is used, then strong anti-inflammatory effect is achieved, but serious side effects occur including secondary adrenal insufficiency, hyperglycemia, Cushing syndrome, osteoporosis, and gastrointestinal bleeding
Solution Approach 1:
The invention segments the corticosteroid molecule by conjugating it to gold nanoparticles, creating a nanocomposite structure where the drug is delivered in a controlled manner. This segmentation allows the drug to be released gradually at the target site, achieving therapeutic effects while reducing the need for high doses that cause side effects
Solution Approach 2:
The gold nanoparticle acts as an intermediary carrier between the corticosteroid drug and the target inflammatory tissue. The nanoparticle facilitates controlled delivery and release of the drug, mediating the interaction between the pharmaceutical agent and the biological system to reduce adverse effects while maintaining efficacy
2Duration of action of stationary object
If repeated long-term high-dose intra-articular corticosteroid injection is administered, then sustained anti-inflammatory effect is achieved, but drug resistance and serious side effects are induced
Solution Approach 1:
The nanocomposite formulation enables periodic, controlled release of corticosteroid at the target site. This periodic delivery mechanism maintains therapeutic levels over time without requiring repeated high-dose injections, thereby preventing drug resistance and reducing cumulative side effects
Solution Approach 2:
The drug is pre-loaded onto the gold nanoparticle surface or incorporated into the nanoparticle structure in advance. This preliminary preparation allows for controlled release kinetics, ensuring sustained therapeutic effect while avoiding the need for repeated high-dose administrations that lead to resistance and adverse effects
Data Source
AI summary
The present invention provides a novel therapeutic agent for treating inflammatory diseases which reduces the pro-inflammatory response and increases M2 macrophages according to the repolarization of macrophages, thereby exhibiting fewer side effects and excellent anti-inflammatory effects even at low doses compared to conventional steroid anti-inflammatory agent.