Cell Delivery Carrier with Stimuli-Responsive Polymer
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Solution Overview
Problem
Conventional drug delivery systems face challenges with oxidative degradation, low cellular absorption, and inefficient intracellular degradation of active ingredients, leading to inadequate targeting and release of therapeutic agents.
Innovation Solution
A delivery carrier system incorporating a stimulus-responsive polymer and amphiphilic vitamin derivatives that enhance endocytosis and autophagy-related gene activation, stabilizing the carrier for efficient cellular uptake and degradation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional delivery carriers are used, then the formulation can be prepared, but oxidative degradation is accelerated and the active ingredient does not reach the target tissue sufficiently
Solution Approach 1:
The patent introduces an intermediary substance (vitamin E or other antioxidants) that mediates between the oxidative environment and the active ingredient. This intermediary scavenges free radicals and prevents oxidation of the active ingredient, thereby protecting the active ingredient from degradation while allowing the delivery carrier to function normally.
Solution Approach 2:
The patent creates an inert protective environment around the active ingredient by incorporating antioxidant substances that establish a protective barrier against oxidative degradation. This inert environment prevents oxygen and free radicals from attacking the active ingredient, thereby maintaining its stability during formulation and delivery.
2Reliability
If conventional delivery carriers are used, then the formulation can be prepared, but cellular absorption is insufficient
Solution Approach 1:
The patent changes the surface parameters of the delivery carrier by incorporating amphiphilic molecules and vitamin E derivatives that modify the carrier's interaction with cell membranes. This changes the surface properties to enhance cellular absorption through improved membrane permeability and endocytic uptake, thereby increasing delivery efficiency.
Solution Approach 2:
The patent creates a composite delivery carrier system combining multiple components: the base carrier, amphiphilic molecules, and vitamin E derivatives. This composite structure leverages the complementary properties of each component to achieve both oxidative protection and enhanced cellular absorption, resolving the contradiction between reliability and productivity.
3Reliability
If conventional delivery carriers are used, then the formulation can be prepared, but intracellular degradation is inefficient
Solution Approach 1:
The patent introduces an intermediary degradation promoter substance that facilitates intracellular degradation of the carrier and release of the active ingredient. This intermediary acts as a bridge between the carrier and cellular degradation mechanisms, enhancing the efficiency of active ingredient release while maintaining carrier stability during transit.
Solution Approach 2:
The patent introduces dynamic responsiveness to the delivery carrier system through stimuli-responsive components that can change their properties in response to intracellular conditions. This allows the carrier to transition from a stable protective form to a degraded release form upon entering the cell, efficiently promoting intracellular degradation and active ingredient 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 system achieves high cellular absorption and efficient intracellular degradation of active ingredients, ensuring targeted delivery and prolonged stability of therapeutic agents, thereby improving the efficacy and safety of drug delivery.
Implementation Method 1
Stimuli-responsive polymers are polymers that contain stimuli-responsive molecules whose microstructure changes reversibly or chemically depending on the surrounding external stimuli such as temperature, pH, ionic strength, magnetic field, electric field, light, sound waves, pressure, solvent, acceleration, and chemical species
Implementation Method 2
In the conventional delivery carrier into the cell, oxidative degradation is accelerated in the formulation and between the formulation and the target cell
Implementation Method 3
the active ingredient was not sufficiently released because The delivery carrier into cell was not degraded within the cellular absorption
Data Source
AI summary
[Problem to be Solved]Provided is a delivery carrier into the cell having high antioxidant activity, intracellular absorbability, intracellular disintegration property, stability and safety, which have high delivery property of the active ingredient to cell and living tissues.[Solution]The delivery carrier into cells includes a vitamin derivative with co-activation of both autophagy-related genes and protease synthesis genes, a polymer molecule containing stimulatory reactivity, an emulsion stabilizer, an active ingredient, and a lipid, thereby providing a delivery carrier into cells with high delivery properties of the active ingredient to cells and living tissues.