Detectable Cell Barcodes for Multiplexed Assay Analysis
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Solution Overview
Problem
High-throughput cellular analysis experiments face challenges with reagent expense, analysis time, and variability in assay parameters when dealing with hundreds or thousands of samples, as existing systems are not widely available or efficient.
Innovation Solution
The use of Detectable Cell Barcodes (DCBs), specifically Fluorescent Cell Barcodes (FCBs), which label cell samples with unique signatures using different concentrations of fluorophore markers, allowing for multiplex analysis and significant reduction in reagent consumption and variability by enabling the simultaneous analysis of multiple samples in a single reaction tube.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple cell samples are analyzed individually using conventional flow cytometry, then each sample can be analyzed with sufficient reagents and controlled assay parameters, but reagent consumption increases and analysis time extends significantly
Solution Approach 1:
The patent combines multiple cell samples into a single reaction tube for simultaneous analysis. Each sample is labeled with a unique detectable cell barcode (DCB) signature, allowing individual identification within the multiplexed mixture. This merging approach maintains assay parameter control through standardized labeling while dramatically reducing analysis time by processing hundreds of samples in parallel rather than sequentially.
Solution Approach 2:
The patent introduces detectable cell barcodes (DCBs) as intermediary labels that attach to cells and provide unique identification signatures. These DCBs act as mediators that enable the tracking and differentiation of individual samples within a multiplexed mixture, allowing accurate data deconvolution while maintaining controlled assay conditions across all samples.
2Productivity
If hundreds or thousands of cell samples are analyzed using conventional methods, then comprehensive high-throughput screening is achieved, but reagent expense increases substantially
Solution Approach 1:
The patent merges hundreds of individually labeled cell samples into a single reaction tube containing shared reagents. By using unique DCB signatures to track each sample, the system achieves high-throughput screening of hundreds of samples while consuming reagents only once for the entire mixture rather than separately for each sample, substantially reducing reagent expense.
Solution Approach 2:
The patent changes the identification parameter from sample-specific reagent additions to cell-intrinsic DCB labeling. This parameter change allows the system to maintain high throughput by using the cell's own label as its identifier, eliminating the need for sample-specific reagent consumption and enabling cost-effective analysis of hundreds of samples.
3Reliability
If multiple samples are processed separately to maintain assay consistency, then sample-to-sample variability is controlled, but the complexity of the experimental workflow increases
Solution Approach 1:
The patent merges multiple samples into a single reaction tube with shared reagents and standardized labeling conditions. This approach inherently controls sample-to-sample variability by ensuring all samples experience identical assay conditions, while the DCB labeling system simplifies the workflow by providing automatic sample identification and data deconvolution, reducing overall workflow complexity despite the increased throughput.
4Productivity
If rapid auto-samplers are used to increase throughput, then sample acquisition speed improves, but system availability and accessibility are limited
Solution Approach 1:
The patent uses DCB labels as intermediaries that enable simple manual sample handling to achieve the same throughput as complex automated systems. By labeling cells with unique barcodes before processing, researchers can manually combine and analyze hundreds of samples using standard flow cytometers, making high-throughput capability accessible without requiring specialized rapid auto-sampler equipment.
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 reduces reagent consumption, improves throughput, and eliminates sample-to-sample variability, enabling the efficient analysis of hundreds to thousands of samples while maintaining high accuracy and consistency.
Implementation Method 1
different cell samples are labeled with different amounts of a DCB marker, e.g., by treatment with different concentrations of a DCB label that binds to a cell (e.g., a cell-reactive form of a fluorophore)
Data Source
AI summary
We describe herein a cell-based multiplexing technique called detectable cell barcoding (DCB). In DCB, each individual sample is labeled with a different DCB signature that distinguishes each sample by one or both of detected intensity or type of detection characteristic. The samples are then combined and analyzed for a detectable characteristic of interest (e.g., presence of an analyte). By employing multiple distinct DCB labels at varying concentrations, one can perform multiplex analyses on up to hundreds or thousands (or more) of cell samples in a single reaction tube. DCB reduces reagent consumption by factors of 100-fold or more, significantly reduces data acquisition times and allows for stringent control sample analysis.