Agarose Colloidal Particle for Extracellular Vesicle Separation
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Solution Overview
Problem
Current methods for separating extracellular vesicles, such as ultracentrifugation, suffer from low recovery rates and long processing times, failing to achieve high purity and efficiency simultaneously.
Innovation Solution
A separation method using a chemically synthesized colloidal particle filled in a column, where the colloidal particle is made of agarose with a specific concentration, sieved to a specific size, and surface-modified with biocompatible molecules, allowing for efficient separation of extracellular vesicles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If ultracentrifugation is used for extracellular vesicle separation, then high purity can be achieved, but recovery rate is low and processing time is long
Solution Approach 1:
The patent introduces an intermediary substance (polymer or magnetic beads) that mediates the separation process. These intermediaries bind to extracellular vesicles through specific interactions, enabling selective capture and separation from the complex biological mixture, thereby improving recovery rate while maintaining purity through controlled binding and elution processes
Solution Approach 2:
The patent replaces the conventional mechanical ultracentrifugation system with a chemical or magnetic separation system. Instead of relying on high-speed centrifugal force, the method uses chemical binding agents or magnetic properties to achieve separation, which reduces processing time and improves both recovery rate and purity simultaneously
2Manufacturing precision
If ultracentrifugation is used for extracellular vesicle separation, then high purity can be achieved, but processing time is long
Solution Approach 1:
By introducing intermediary substances that specifically interact with extracellular vesicles, the separation process is accelerated. The intermediaries enable rapid binding and separation through chemical or magnetic forces, eliminating the need for prolonged ultracentrifugation while maintaining high purity through selective interaction
Solution Approach 2:
The patent changes the separation parameters from mechanical force (centrifugal force in ultracentrifugation) to chemical or magnetic parameters. This parameter transformation allows the separation to occur under milder and faster conditions, significantly reducing processing time while preserving purity through controlled chemical or magnetic interactions
3Manufacturing precision
If conventional separation methods are used, then high purity can be achieved, but recovery rate is low
Solution Approach 1:
The intermediary substances are designed to bind specifically to extracellular vesicles with high affinity, ensuring that vesicles are captured efficiently during the separation process. This specific binding interaction increases recovery rate while maintaining purity through selective capture that distinguishes vesicles from other biological components
Solution Approach 2:
The patent optimizes separation parameters by transitioning from harsh mechanical conditions to gentler chemical or magnetic conditions. This parameter change reduces vesicle damage and loss during separation, improving recovery rate while maintaining purity through controlled interaction mechanisms that preserve vesicle integrity
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
This method achieves high recovery rates (>50%) and high purity of extracellular vesicles while significantly reducing processing time, thereby addressing the limitations of existing techniques.
Implementation Method 1
a separation column is filled with a chemically synthesized colloidal particle to separate extracellular vesicles
Data Source
AI summary
An extracellular vesicle separation method, a colloidal particle, and a preparation method thereof are provided. The colloidal particle is used for extracellular vesicle separation, and includes 2 wt % to 6 wt % of agarose. The colloidal particle has a particle size of 25 μm to 500 μm, and is surface-modified with biocompatible molecules. The biocompatible molecules include sodium carboxymethyl cellulose (CMC), methyl cellulose (MC), glycine, aspartic acid, glutamic acid, bovine serum albumin (BSA), fetal bovine serum (FBS), or a combination thereof.