Extracellular Vesicle Encapsulation via High Pressure Processing

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Current methods for encapsulating drugs in extracellular vesicles suffer from low encapsulating efficiency and yield, making them unsuitable for commercial-scale drug delivery.

Innovation Solution

The introduction of high pressure processing (HPP) into the encapsulation process of extracellular vesicles, using water as the medium and applying pressures of 0–600 mPa, to improve the encapsulating efficiency and yield without damaging the vesicles.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If passive encapsulation is used to culture drugs with host cells or extracellular vesicles, then the encapsulation process is simple, but the drug encapsulating efficiency is low

Engineering Contradiction:

Improveencapsulation process simplicityVSAvoiddrug encapsulating efficiency

Core Design Contradiction:

Ease of manufactureVSManufacturing precision

Solution Approach 1:

The patent applies high pressure processing (HPP) to change the physical parameters of the extracellular vesicles, specifically applying pressures between 0-600 mPa to enhance membrane permeability and facilitate drug encapsulation, thereby improving encapsulating efficiency while maintaining process simplicity

Inventive Principle:

Principle #35Parameter changes

2Manufacturing precision

If active encapsulation uses ultrasound to deform extracellular vesicles for drug entry, then the encapsulating efficiency is highest, but the yield is low

Engineering Contradiction:

Improveencapsulating efficiencyVSAvoidyield

Core Design Contradiction:

Manufacturing precisionVSProductivity

Solution Approach 1:

The patent replaces ultrasound with high pressure processing (HPP), applying pressures between 0-600 mPa to achieve a balance between encapsulating efficiency and yield, avoiding the excessive deformation caused by ultrasound while maintaining effective drug encapsulation

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent substitutes the mechanical ultrasound system with a high pressure processing system, using static pressure instead of acoustic vibration to deform and encapsulate drugs, thereby improving yield while maintaining encapsulating efficiency

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Reliability

If extracellular vesicles are used for drug delivery, then they provide good biocompatibility and nanometer size, but the therapeutic efficacy varies with disease type and severity

Engineering Contradiction:

ImprovebiocompatibilityVSAvoidtherapeutic efficacy consistency

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent uses high pressure processing to standardize the physical parameters of extracellular vesicles, creating more uniform vesicle structures that can consistently deliver drugs across different disease types and severities, thereby improving therapeutic efficacy consistency while preserving biocompatibility

Inventive Principle:

Principle #35Parameter changes

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

HPP significantly enhances the encapsulating efficiency and yield of extracellular vesicles, allowing for mass production of drug-loaded vesicles while maintaining their structural integrity.

Implementation Method 1

processing the first mixture with high pressure processing to obtain the extracellular vesicles encapsulating the required substance

Methodology Applied

Scientific EffectHigh pressure processing: Pressure Increase

Data Source

PatentUS20250170068A1Encapsulation Method Using Extracellular Vesicle as Carrier

Publication Date: 2025.05.29 NAT CHENG KUNG UNIV

AI summary

A novel encapsulation method using extracellular vesicles as carriers. When encapsulating required substances, high pressure processing (HPP) is used to greatly increase the encapsulating efficiency of extracellular vesicles, so as to improve the low encapsulating efficiency of traditional passive encapsulation methods. The method is able to improving the use efficiency of required substances, and also having the advantage of the capability to be mass-produced.