Encoded Magnetic Beads for Cell Isolation and Detection
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Solution Overview
Problem
Current microscopy techniques for cell analysis are hindered by laborious sample preparation, low throughput, and high operational costs of flow cytometers, making them inaccessible to many laboratories, especially in resource-poor countries.
Innovation Solution
A method using encoded magnetic beads and antibodies to immobilize and detect cell populations within a sample by applying a magnetic field, allowing for efficient sample preparation and analysis without the need for extensive staining or expensive equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If flow cytometry is used for cell analysis, then throughput and measurement precision are improved, but device complexity and cost increase significantly
Solution Approach 1:
The patent replaces the complex optical detection system of flow cytometry with a magnetic field-based immobilization system combined with simple imaging. Magnetic beads functionalized with antibodies capture target cells, which are then immobilized on a surface using a magnetic field for subsequent imaging analysis, eliminating the need for expensive flow cytometers while maintaining high throughput capability
Solution Approach 2:
The patent introduces magnetic beads as an intermediary between the sample and the detection system. These beads functionalized with specific antibodies serve as mediators that capture target cells and enable their immobilization and detection through magnetic field application, simplifying the overall system architecture
2Ease of operation
If traditional microscopy with staining is used for cell visualization, then ease of operation is maintained, but productivity and analysis speed decrease
Solution Approach 1:
The patent replaces the time-consuming staining process with magnetic field-based cell immobilization. By using magnetic beads to capture and immobilize cells on a surface, the system enables rapid analysis without requiring discrete staining steps, thereby maintaining operational simplicity while dramatically improving throughput
Solution Approach 2:
The patent performs cell capture and immobilization as a preliminary action before analysis. Magnetic beads are pre-functionalized with antibodies and used to capture target cells in advance, allowing subsequent rapid imaging and analysis without the need for time-consuming staining procedures
3Ease of manufacture
If manual sample preparation and positioning is used in microscopy, then ease of manufacture is maintained, but loss of time and productivity worsen
Solution Approach 1:
The patent replaces manual sample preparation and positioning with automated magnetic field-based immobilization. The magnetic field automatically positions captured cells on the imaging surface, eliminating manual intervention and significantly reducing preparation time while keeping the system easy to manufacture
Solution Approach 2:
The magnetic field system performs self-service by automatically immobilizing captured cells in the correct position for imaging. The magnetic beads naturally position themselves and the attached cells on the surface when the magnetic field is applied, eliminating the need for manual positioning operations
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 method enables rapid and cost-effective immobilization and detection of cell populations, improving throughput and accessibility of cell analysis, reducing the need for expensive flow cytometers and complex sample preparation processes.
Implementation Method 1
applying a magnetic field to the chamber to attract the first capture complex and the second capture complex to a surface of the chamber
Data Source
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AI summary
The present invention relates to methods and systems for labeling, isolating, detecting and enumerating biological cells, or other biological analytes of interest present in a sample, where the capturing complex may also serve as a labeling agent. In one embodiment, the capture complex is an encoded magnetic bead coupled to antibodies having a specific affinity for a cell surface protein on a cell of interest. The methods and systems of the present invention can be used for quantitative or qualitative detection.