Tissue-Derived Extracellular Vesicle Filtration for Fast High-Yield Isolation
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Solution Overview
Problem
Current methods for separating and concentrating extracellular vesicles are inefficient, time-consuming, and result in significant loss of vesicles, with low recovery rates and high equipment costs, limiting their practical application in stem cell therapy and research.
Innovation Solution
A method involving multiple washing processes, enzyme treatments, and molecular weight cut-off membrane filtration to separate and concentrate extracellular vesicles, including tissue grinding, enzyme reactions, and tangential flow filtration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional centrifugation methods are used to separate extracellular vesicles, then separation can be achieved, but the separation capacity is limited and time-consuming with low recovery rates
Solution Approach 1:
The patent replaces the conventional mechanical centrifugation system with a magnetic field-based separation system using magnetic beads functionalized with anti-GM131 antibodies. This substitution enables rapid separation without the time-consuming centrifugation process while dramatically increasing separation capacity through high-throughput magnetic processing.
Solution Approach 2:
The patent changes the separation mechanism from mechanical force-based centrifugation to magnetic field-based separation. This parameter change in the separation mechanism enables both increased capacity and reduced time, as magnetic separation can be performed in minutes rather than hours and can process larger volumes simultaneously.
2Productivity
If ultracentrifugation equipment is used to separate extracellular vesicles, then separation can be achieved, but the equipment cost is high and the amount that can be separated at one time is limited
Solution Approach 1:
The patent replaces expensive ultracentrifugation equipment with simple magnetic separation devices. The magnetic bead-based system requires only a magnet and basic laboratory equipment, eliminating the need for costly ultracentrifuges while increasing the amount that can be separated at one time through parallel processing.
Solution Approach 2:
The patent uses disposable magnetic beads functionalized with antibodies as the separation medium. These magnetic beads can be purchased in large quantities at low cost and used for multiple separations, replacing the need for expensive, maintenance-intensive ultracentrifugation equipment.
3Quantity of substance
If conventional centrifugation methods are used to separate extracellular vesicles, then separation can be achieved, but most of the remaining extracellular vesicles are lost with recovery rates of only 5% to 25%
Solution Approach 1:
The patent introduces magnetic beads functionalized with anti-GM131 antibodies as an intermediary that specifically binds to extracellular vesicles. This intermediary enables selective capture of vesicles with high affinity, dramatically improving recovery rates to over 90% by preventing vesicle loss that occurs in conventional centrifugation methods.
Solution Approach 2:
The patent uses composite magnetic beads that combine magnetic particles with antibody functionalization. This composite structure provides both the magnetic properties needed for rapid separation and the specific biological recognition capability through anti-GM131 antibodies, enabling high recovery rates while minimizing vesicle loss.
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 significantly increases the separation capacity by 10 to 1,000,000 times and reduces the separation time to about 1/40, producing a high yield of uniform extracellular vesicles with minimal damage, suitable for commercial and clinical use.
Implementation Method 1
a magnetic field is applied to the reaction solution
Implementation Method 2
magnetic beads on which anti-GM131 antibodies are immobilized are added to 1 mL of the reaction solution
Data Source
AI summary
The present disclosure relates to a method of separating and concentrating a large number of extracellular vesicles (EVs) from various tissues, and more particularly, to a method of quickly separating and concentrating a large number of extracellular vesicles to be separated from animal and human tissues using multiple washing processes, enzyme reactions, and filters. According to the method of separating and concentrating a large number of tissue-derived extracellular vesicles (exosomes and ectosomes) of the present disclosure, compared to conventional exosome isolation kits or ultra-high-speed centrifugation methods, extracellular vesicles from tissues may be rapidly separated and concentrated in large quantities.