Extracellular Vesicle Binding Site Quantification via Conductive Nanoparticles
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Solution Overview
Problem
Characterizing extracellular vesicles, such as exosomes, is difficult due to the challenges in identifying and quantifying their binding sites, which are crucial for disease biomarker detection.
Innovation Solution
A method and system are developed to determine the number of binding sites on extracellular vesicles by attaching electrically conducting nanoparticles and reporters, using electrodes to sense electrical responses, and combining this data with nanoparticle binding counts to quantify binding sites per vesicle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional methods are used to characterize extracellular vesicles, then the process is simple, but the ability to identify and quantify binding sites is insufficient
Solution Approach 1:
The patent introduces electrically conducting nanoparticles as intermediary elements that bind to extracellular vesicles. These nanoparticles serve as mediators between the vesicles and the detection system, enabling electrical signal detection that reflects binding site characteristics on the vesicle surface.
Solution Approach 2:
The patent replaces conventional optical or physical characterization methods with electrical detection. By using electrodes to sense electrical responses from nanoparticle-vesicle complexes, the system substitutes traditional mechanical or optical measurement approaches with electrical field-based detection, achieving higher precision in binding site quantification.
2Adaptability or versatility
If multiple reporters are used to detect different epitopes, then the information obtained is more comprehensive, but the system complexity increases
Solution Approach 1:
The patent employs multiple types of reporters (such as different fluorescent dyes or optical tags) that can detect different epitopes on extracellular vesicles. Each reporter is designed to recognize specific binding sites, allowing the system to simultaneously gather comprehensive information about various surface markers on the same vesicle population.
Solution Approach 2:
The patent extends detection from single-parameter to multi-parameter analysis by introducing multiple reporter types. This adds a dimension of epitope-specific information to the characterization, enabling simultaneous monitoring of different binding sites through distinct optical or electrical signals from each reporter type.
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 approach allows for the accurate detection and quantification of binding sites on extracellular vesicles, providing valuable information for disease biomarker identification and diagnosis.
Implementation Method 1
attaching electrically conducting nanoparticles to the extracellular vesicles... sensing an electrical response of the liquid sample using a pair of electrodes
Implementation Method 2
attaching the extracellular vesicles to magnetic beads before attaching the conducting nanoparticles to the extracellular vesicles
Implementation Method 3
attaching reporters to binding sites on the extracellular vesicles... interrogating the reporters to determine a total number of bindings
Data Source
Figure 1a~1e
Figure 2a~2e
Figure 3a~3e
AI summary
A method of and system for detecting binding sites on an extracellular vesicle. The method comprising obtaining a liquid sample containing extracellular vesicles; attaching reporters to binding sites on the extracellular vesicles; and optically interrogating the reporters to characterize a number of bindings of the reporters to the extracellular vesicles.