Microfluidic Cell Trajectory Analysis for Rapid Immune Activation Detection
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Solution Overview
Problem
Existing methods for quantifying neutrophil activation are too slow or too specialized for clinical use, failing to provide rapid and accurate diagnosis or monitoring of conditions like sepsis and autoimmune diseases.
Innovation Solution
A system and method using a microfluidic device to apply stress to blood cells, acquire optical datasets, and determine cell parameters such as shape and trajectory, enabling rapid determination of immune activation states through logistic regression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If conventional methods for quantifying neutrophil activation are used, then measurement precision may be adequate, but the speed of detection is too slow for clinical use
Solution Approach 1:
The patent replaces conventional mechanical/chemical assay methods with optical measurement techniques. Specifically, it uses a flow cytometry-based system with laser excitation and fluorescence detection to measure neutrophil activation markers (such as CD11b, CD66b, LAMP-1) in real-time as cells flow through the detection zone, enabling rapid yet precise quantification of activation states.
Solution Approach 2:
The patent transforms the measurement approach by changing from endpoint assays to continuous flow-based measurements. Neutrophils are suspended in fluid and passed continuously through the detection system, allowing multiple parameters (fluorescence intensity at different wavelengths, cell size, granularity) to be measured simultaneously for each cell, providing both speed and precision.
2Measurement precision
If specialized techniques are used for accurate immune cell analysis, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent designs a multi-functional flow cytometry system that can analyze multiple immune cell types (neutrophils, monocytes, lymphocytes) and multiple activation markers simultaneously using a single instrument. The system uses multiple laser lines and fluorescence detectors that can be configured to measure different parameters, reducing the need for multiple specialized devices while maintaining high measurement precision.
Solution Approach 2:
The patent segments the complex analysis task into distinct measurement components: cell suspension preparation, flow through detection zone, laser excitation, fluorescence emission detection at multiple wavelengths, and digital signal processing. This segmentation allows each component to be optimized independently while integrating into a unified system that provides comprehensive immune activation analysis.
3Productivity
If rapid detection methods are implemented, then productivity is improved, but measurement precision may deteriorate
Solution Approach 1:
The patent implements continuous flow-based measurement where neutrophils are constantly suspended in fluid and passed through the detection zone without interruption. This continuous action allows thousands of cells to be analyzed per second while maintaining precise measurement of each cell's activation state through consistent laser excitation and fluorescence detection, achieving both high throughput and high precision.
Solution Approach 2:
The patent incorporates digital signal processing and data analysis algorithms that provide feedback on measurement quality. The system monitors fluorescence intensity, cell morphology, and flow characteristics in real-time, using computational methods to distinguish true activation signals from noise, thereby maintaining measurement precision even at high speeds.
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
Rapidly determines immune activation states, such as sepsis, with high accuracy and reproducibility, allowing for timely clinical diagnosis and monitoring of conditions like sepsis and autoimmune diseases.
Implementation Method 1
Hydrodynamic stretching single cells for large population mechanical phenotyping
Implementation Method 2
acquire an optical dataset associated with the one or more blood cells
Data Source
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AI summary
A system and method for determining a trajectory parameter of particles, comprising receiving a plurality of particles at a microfluidic channel, applying a force to each particle of the microfluidic channel, acquiring a dataset of each particle, measuring a trajectory of the particle, and determining a trajectory parameter of the particles.