Full Spectrum Flow Cytometer Panel for Immune Cell Subsets
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Solution Overview
Problem
Current flow cytometry technologies face limitations in performing high-throughput, in-depth analysis of immune cell populations, particularly in cases with limited sample availability, as they struggle to accurately distinguish and characterize immune subpopulations across multiple testing requirements.
Innovation Solution
The development of a full spectrum flow cytometer with multiple lasers and detectors enables the creation of highly multiparametric panels by measuring entire fluorochrome emission spectra, allowing for the combination of 30 or more fluorescently labeled antibodies and precise spectral unmixing of overlapping fluorophores, even when their maximum emissions are similar.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional flow cytometry is used to analyze immune cell populations, then the analysis can be performed with standard equipment, but the ability to distinguish and characterize immune subpopulations is insufficient
Solution Approach 1:
The flow cytometer is divided into multiple independent detection modules, each dedicated to detecting specific fluorochrome emission spectra. This segmentation allows simultaneous measurement of multiple parameters without interference, enabling precise characterization of immune subpopulations through dedicated detection channels for each fluorochrome.
Solution Approach 2:
The system transitions from conventional single-parameter or limited multi-parameter flow cytometry to full spectrum analysis by measuring the entire emission spectrum of fluorochromes. This dimensional expansion from discrete wavelength points to continuous spectral measurement enables differentiation of fluorophores with overlapping emissions, significantly improving immune cell population characterization accuracy.
2Adaptability or versatility
If multiple fluorescently labeled antibodies are combined to increase analysis depth, then more immune parameters can be measured simultaneously, but spectral overlap between fluorophores becomes problematic
Solution Approach 1:
The detection system is segmented into multiple independent detectors, each optimized for specific wavelength ranges. This allows simultaneous measurement of multiple fluorochromes with different emission spectra without mutual interference, enabling analysis of 30 or more immune parameters while maintaining spectral resolution through dedicated detection channels.
Solution Approach 2:
The system changes the measurement parameter from discrete intensity at single wavelengths to continuous spectral distribution across the entire emission range. By measuring the full spectrum and analyzing the shape and pattern of emission profiles, the system can distinguish between fluorophores with overlapping maximum emissions, maintaining precision while increasing the number of analyzable parameters.
3Productivity
If limited sample availability exists, then fewer samples can be processed, but the need for high-throughput analysis increases
Solution Approach 1:
The flow cytometer operates continuously with automated sample processing, maintaining constant analysis capability without interruption. The system can process multiple samples in rapid succession through automated loading and processing sequences, maximizing the utilization of limited samples and increasing effective throughput despite the constrained quantity of available biological material.
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 approach significantly enhances the ability to characterize immune cell populations by enabling the analysis of up to 40 colors in a single sample, improving the resolution and accuracy of immune profiling, and addressing the challenge of limited sample availability.
Implementation Method 1
Flow cytometers utilize lasers as light sources to produce both scattered and fluorescent light signals
Implementation Method 2
Flow cytometers utilize lasers as light sources to produce both scattered and fluorescent light signals
Data Source
AI summary
In one embodiment, a method of building an optimized color flow cytometry panel is disclosed using a full spectrum flow cytometer with five excitation lasers and five corresponding detection modules. In another embodiment, a graphical user interface is disclosed generated by a server computer from a fluorochrome database and displayed by a client computer to assist in the selection of a set of fluorochromes for use in an assay to analyze biological samples. The GUI can display spectra graphs to visually show how fluorochromes may overlap and can generate similarity indexes for the paired fluorochrome interference and a complexity index for overall many to many interferences generated by a selected group or set of fluorochromes.