Magnetic Nanoparticles with Fluorescent Barcodes for Multiplexed Detection
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Solution Overview
Problem
Current molecular and cellular detection methods, such as ELISA and immunofluorescence, lack sensitivity and specificity, particularly in identifying and quantifying multiple analytes in biological samples, necessitating the development of advanced nanotechnology-based solutions.
Innovation Solution
A composition comprising a nanostructure with a magnetic material linked to an analyte-binding member, which can be colored or bar-coded, and associated with detectable agents, allowing for the detection and quantification of analytes through magnetic grids and signal indicators, enabling multiplexed analysis and enhanced sensitivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional methods like ELISA or immunofluorescence are used for molecular and cellular detection, then the detection process is simple and well-established, but the sensitivity and specificity are insufficient particularly for identifying and quantifying multiple analytes
Solution Approach 1:
The patent combines multiple detection functions into a single nanoparticle system. The nanoparticle integrates magnetic separation capability, fluorescent detection, and barcoding identification into one unified structure, allowing simultaneous separation, detection, and quantification of multiple analytes without requiring multiple separate assay systems
Solution Approach 2:
The nanoparticle is designed as a universal platform that can detect multiple different analytes through barcoding. By assigning different fluorescent barcodes to nanoparticles targeting different analytes, the system achieves multi-analyte detection capability while maintaining a consistent detection methodology across all targets
2Measurement precision
If nanotechnology-based detection systems are developed to enhance sensitivity, then the detection sensitivity improves, but the device complexity and difficulty of operation increase
Solution Approach 1:
The patent replaces complex mechanical separation and detection procedures with magnetic field-based manipulation. Magnetic nanoparticles respond to external magnetic fields for separation, eliminating the need for complex mechanical filtration or centrifugation systems, thereby simplifying operational procedures while maintaining high sensitivity
Solution Approach 2:
The system uses fluorescent barcodes that emit different colors or wavelengths to encode analyte identity. This optical encoding system allows for simple, non-invasive detection and identification of multiple analytes through fluorescence reading, avoiding complex operational procedures required by other identification methods
3Productivity
If multiple analytes are detected simultaneously using multiplexed analysis, then the productivity and information content increase, but the device complexity and data interpretation difficulty increase
Solution Approach 1:
The patent segments the detection system into distinct functional modules: magnetic nanoparticles for separation, fluorescent barcodes for identification, and signal indicators for quantification. This modular segmentation allows each component to perform its function independently, simplifying the overall system architecture despite the multiplexed capability
Solution Approach 2:
The fluorescent barcode acts as an intermediary that bridges the nanoparticle-analyte binding event and the final detection signal. The barcode encodes analyte identity in a simple, readable format, mediating between the complex biological interaction and the straightforward fluorescent readout, thereby simplifying data interpretation
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 solution enables precise detection and quantification of multiple analytes in biological samples with improved sensitivity, facilitating the identification of specific cells and biomarkers, and allowing for the isolation of target cells from complex samples.
Implementation Method 1
a nanostructure which contains a magnetic material
Implementation Method 2
the detectable agent is a fluorescent molecule
Implementation Method 3
the detectable agent is a chemo-luminescent molecule
Implementation Method 4
the detectable agent is a bio-luminescent molecule
Data Source
AI summary
The present disclosure provides compositions and methods useful for molecular and cellular separation, detection and quantification. The compositions provided herein comprise a nanostructure having magnetic property operably linked to an analyte-binding member.