Molecular Barcode Labeling in Fluid Compartments for Digital PCR
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Solution Overview
Problem
Existing methods for labeling target materials such as nucleic acids and proteins in molecular biology are inefficient and lack the ability to provide sensitive and specific diagnostics and therapeutic development.
Innovation Solution
The use of fluid compartments, such as droplets, for sequestration, isolation, labeling, detection, and analysis of target materials, employing barcode-type and probe-type labels, along with microfluidic technology for droplet manipulation and merging, enables precise labeling and analysis of nucleic acids and proteins.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional labeling methods are used, then the labeling process is simple, but the sensitivity and specificity of detection is insufficient
Solution Approach 1:
The patent segments the labeling process into distinct functional components: fluid compartments for sample isolation, barcode-type labels for identification, and probe-type labels for detection. This segmentation allows each component to be optimized independently, achieving high detection sensitivity while maintaining manageable system complexity through modular design
Solution Approach 2:
The patent introduces fluid compartments as intermediary structures that bridge the sample and detection systems. These compartments provide a controlled environment for labeling reactions, enabling specific interactions between probes and targets while isolating them from interfering substances, thereby improving detection specificity without requiring complex purification systems
2Adaptability or versatility
If conventional labeling methods are used, then the analysis process is straightforward, but the ability to detect multiple mutations is limited
Solution Approach 1:
The patent designs barcode-type labels with universal binding regions that can recognize multiple mutation types and locations. These labels serve multiple functions: identifying different mutations, enabling parallel analysis of multiple samples, and providing compatibility with various detection methods. This multi-functionality allows the system to detect multiple mutations simultaneously without requiring separate specialized reagents for each mutation type
Solution Approach 2:
The patent adds a dimensional layer by introducing barcode sequences that encode mutation information in addition to the physical detection signal. This informational dimension allows multiple mutations to be distinguished and tracked simultaneously within the same physical assay, enabling multiplex analysis without proportionally increasing physical or operational complexity
3Reliability
If conventional labeling methods are used, then the workflow is simple, but the diagnostic and therapeutic outcomes are not optimized
Solution Approach 1:
The patent replaces conventional mechanical mixing and manual handling with automated fluid compartment systems. The fluid compartments provide controlled micro-environments that automatically confine reagents and samples, eliminating the need for complex manual pipetting and mixing operations. This substitution improves diagnostic accuracy through consistent, repeatable conditions while reducing operational complexity
Solution Approach 2:
The patent optimizes diagnostic and therapeutic outcomes by precisely controlling parameters within fluid compartments, such as reagent concentrations, temperatures, and reaction times. These controlled parameter changes enable sensitive detection of subtle molecular differences, improving diagnostic accuracy without requiring overly complex system architecture
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 allows for improved diagnostic and therapeutic outcomes by enabling sensitive and specific detection, amplification, and sequencing of nucleic acids and proteins, with the ability to identify multiple mutations and inform treatment strategies.
Implementation Method 1
The probe can include a sequence that is complementary to a sequence in the target material
Data Source
AI summary
The invention provides barcode libraries and methods of making and using them including obtaining a plurality of nucleic acid constructs in which each construct comprises a unique N-mer and a functional N-mer and segregating the constructs into a fluid compartments such that each compartment contains one or more copies of a unique construct. The invention further provides methods for digital PCR and for use of barcode libraries in digital PCR.