Extracellular Vesicle Detection in Enzyme-Activated Microreactors
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Solution Overview
Problem
Existing methods do not effectively detect extracellular vesicles with enzymatic activity, particularly those containing active enzymes, with high sensitivity.
Innovation Solution
A method and apparatus for detecting extracellular vesicles with enzymatic activity by distributing them into individual compartments, allowing a reporter molecule to react with the target enzyme to generate a signal, and identifying compartments with signal intensity exceeding a threshold.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If an ELISA assay is used to detect extracellular vesicles with membrane proteins, then the detection can be performed with existing methods, but the sensitivity for detecting enzymatic activity is insufficient
Solution Approach 1:
The invention divides the detection system into individual separated compartments (microreactors), where each compartment can independently detect enzymatic activity. This segmentation allows for signal amplification and improved sensitivity while maintaining manageable complexity through modular design.
Solution Approach 2:
The invention introduces a reporter molecule as an intermediary that reacts with the target enzyme to produce a detectable signal. This mediator enables indirect detection of enzymatic activity with high sensitivity, overcoming the limitations of direct ELISA methods.
2Measurement precision
If individual separated compartments are used for detection, then the sensitivity and precision of enzymatic activity detection are improved, but the device complexity and operational difficulty increase
Solution Approach 1:
The detection system is segmented into multiple identical, standardized compartments that can be manufactured and operated in parallel. This standardization reduces operational complexity despite the increased number of detection units.
Solution Approach 2:
Each compartment is designed to perform the complete detection process independently, including reagent mixing, reaction, and signal generation. This self-contained design simplifies operation by eliminating the need for complex external control mechanisms.
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
Enables sensitive detection of extracellular vesicles with enzymatic activity by detecting enzyme activity, using a reagent kit and apparatus that facilitate signal generation and detection in individual compartments.
Implementation Method 1
a reporter molecule to be modified by the target enzyme to emit a signal
Implementation Method 2
the target enzyme and the reporter molecule to react with each other to generate a signal
Data Source
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AI summary
An object of the present invention is 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.