Impedance-Imaging Cytometry for High-Throughput Rare Cell Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current image cytometry and single cell analysis technologies face challenges in detecting biological samples with rare and subtle properties due to limitations in throughput and information content.
Innovation Solution
A method that combines impedance readouts and imaging information to characterize biological samples, using impedance markers that bind specifically to target analytes, allowing for high-throughput analysis and detailed characterization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional cytometry is used, then throughput is very high (up to 200,000 events per second), but information content is low
Solution Approach 1:
The patent merges impedance cytometry (providing high throughput) with imaging flow cytometry (providing high information content) into a unified system. The impedance readout measures electrical properties of cells at high speed, while simultaneously captured imaging data provides detailed morphological and spatial information, resolving the contradiction between throughput and information content
Solution Approach 2:
The system performs multiple functions simultaneously: impedance measurement for high-throughput classification and imaging for detailed characterization. This multi-functional approach allows the same system to deliver both high throughput and high information content without requiring separate specialized instruments
2Loss of information
If fluorescence microscopy is used, then information content is very high (spatial resolution, spectral resolution, temporal resolution), but throughput is low
Solution Approach 1:
The system segments the analysis process into two complementary parts: rapid impedance measurement for initial cell classification and targeted imaging for detailed analysis. This segmentation allows the system to maintain high throughput through impedance screening while applying high-information imaging only where needed, thus resolving the throughput-information contradiction
3Productivity
If imaging flow-through is used, then medium throughput and medium information content are achieved, but detection of rare and subtle phenotypes remains limited
Solution Approach 1:
The patent replaces reliance solely on optical imaging with a hybrid approach that incorporates electrical impedance measurement. Impedance provides complementary biophysical information about cell properties that enhances detection sensitivity for rare and subtle phenotypes, while maintaining the medium throughput capability of imaging flow-through
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
Enables efficient and accurate characterization of biological samples by increasing both throughput and information content, allowing for the detection of rare and subtle properties.
Implementation Method 1
the impedance marker is configured to change the impedance of the biological sample
Implementation Method 2
The marker comprises an affinity reagent configured to specifically bind to a target analyte of the biological sample
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A method for characterising at least one biological sample is provided. The method comprises the steps of generating an impedance readout of the biological sample, generating imaging information of the biological sample, and characterising the biological sample based on the impedance readout and on the imaging information. In further aspects, a marker and a system for characterising the biological sample is provided.