Extracellular Vesicle Detection Through Enzyme-Activated Reporter Signals
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing assays fail to detect extracellular vesicles with enzymatic activity effectively, particularly when the detection target is an enzyme, lacking sensitivity and specificity.
Innovation Solution
A method and apparatus for detecting extracellular vesicles with enzymatic activity by distributing them into individual compartments where they react with reporter molecules to generate signals, allowing for sensitive detection and identification of compartments with significant signal intensity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If ELISA assay using capture antibody and detection antibody is used to detect membrane proteins in extracellular vesicles, then the presence of membrane protein can be detected, but the assay cannot detect enzymatic activity or provide functional information about the extracellular vesicles
Solution Approach 1:
The patent introduces a substrate as an intermediary molecule that interacts with the enzyme in the extracellular vesicle. The substrate is converted into a product through enzymatic action, and this conversion is detected using a detection reagent. This intermediary approach enables the detection of enzymatic activity rather than just the presence of membrane proteins, thereby enhancing both detection sensitivity and functional detection capability.
Solution Approach 2:
The patent replaces the traditional ELISA mechanical binding-based detection system with a biochemical detection system that measures enzymatic activity. Instead of detecting membrane proteins through antibody binding, the system detects the chemical transformation caused by enzyme action on a substrate, providing functional information about the extracellular vesicles.
2Device complexity
If traditional ELISA assay is used for detecting extracellular vesicles, then the assay structure is simple, but the detection sensitivity and specificity for enzymatic activity is insufficient
Solution Approach 1:
The patent segments the detection system into distinct functional components: a capture antibody to isolate extracellular vesicles, a substrate to serve as the enzyme's target, and a detection reagent to measure the enzymatic conversion. This segmentation allows each component to be optimized for its specific function, improving overall detection sensitivity while maintaining assay manageability.
Solution Approach 2:
The patent changes the detection parameter from membrane protein presence (detected by antibody binding) to enzymatic activity (detected by substrate conversion). This parameter change enables the assay to detect functional activity rather than just structural presence, significantly improving detection sensitivity and specificity for enzymatic targets.
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 enables high-sensitivity detection of extracellular vesicles with enzymatic activity, providing accurate identification of compartments with enzyme activity.
Implementation Method 1
a reporter molecule to be modified by the target enzyme to emit a signal
Data Source
AI summary
The present invention is directed to simply detect an extracellular vesicle with high sensitivity. Specifically, provided is a method of detecting an extracellular vesicle having a target enzyme, the method including: a distribution step of distributing an extracellular vesicle and a reagent containing a reporter molecule to be modified by the target enzyme to emit a signal into a plurality of individual separated compartments; a signal generation step of allowing the target enzyme and the reporter molecule to react with each other to generate a signal; a signal detection step of detecting the signal; and an identification step including determining, based on a detection result obtained in the signal detection step, a signal intensity of each of the individual separated compartments, and identifying each of the individual separated compartments having a signal intensity exceeding a predetermined threshold value.