Microfluidic Neutrophil Trajectory Analysis for Rapid Immune Activity
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Solution Overview
Problem
Existing methods for quantifying neutrophil activation are too slow or too specialized for clinical use, hindering their application in diagnosing and monitoring conditions like sepsis and autoimmune diseases.
Innovation Solution
A system and method utilizing 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.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing methods for quantifying neutrophil activation are used, then measurement precision can be achieved, but the analysis time becomes too slow for clinical use
Solution Approach 1:
The patent segments the neutrophil population into distinct subpopulations based on activation markers (e.g., CD107a, CD63, MPO) and measures their individual frequencies. This segmentation allows parallel processing of multiple activation states simultaneously, dramatically reducing total analysis time while maintaining precision through multi-parameter flow cytometry or microfluidic single-cell analysis.
Solution Approach 2:
The patent replaces traditional manual or bulk mechanical methods with automated flow cytometry and microfluidic single-cell analysis systems. These automated optical and electronic measurement systems enable rapid, high-throughput quantification of activation markers across thousands of cells per second, transforming the analysis from a time-consuming mechanical process to a rapid automated one.
2Measurement precision
If existing specialized methods are used, then measurement precision is achieved, but device complexity and specialization limit clinical applicability
Solution Approach 1:
The patent develops a universal measurement platform using flow cytometry or microfluidic devices that can simultaneously measure multiple activation markers (CD107a, CD63, MPO, etc.) and differentiate between various neutrophil subpopulations. This multi-functional system eliminates the need for multiple specialized tests, reducing overall device complexity while maintaining comprehensive measurement capability across different activation states.
Solution Approach 2:
The patent employs parameter changes by using fluorescently labeled antibodies against different activation markers, allowing the same hardware platform to measure multiple activation states by simply changing the fluorochrome conjugates. This parameter-based approach enables a single device to perform multiple specialized functions, reducing complexity while maintaining precision.
Data Source
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.