Degradable Microcapsule Array for Parallel Sample Tagging
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Solution Overview
Problem
Current methods for sample preparation in molecular biology and medical applications, such as genetic testing, lack efficiency and effectiveness in preparing samples for downstream applications.
Innovation Solution
A microcapsule array device comprising degradable microcapsules with oligonucleotide barcodes, which can be triggered to release the barcodes upon application of a stimulus, facilitating sample preparation and tagging of analytes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional sample preparation methods are used, then the process is simple, but the efficiency and effectiveness are insufficient
Solution Approach 1:
The sample preparation process is segmented into multiple parallel reactions, each performed in separate microcapsules within an array. This allows simultaneous processing of multiple samples, significantly improving productivity while keeping individual microcapsule operations simple
Solution Approach 2:
A microcapsule array serves as an intermediary platform that consolidates multiple sample preparation steps into a single integrated system. The array enables efficient sample preparation by providing a structured framework for parallel processing while managing complexity through modular organization
2Measurement precision
If microcapsules are made degradable to enable controlled release, then the accuracy of downstream applications is improved, but the device complexity increases
Solution Approach 1:
The microcapsule shell is designed with degradable properties that change under specific conditions (such as pH, temperature, or enzymatic treatment). This allows controlled release of reagents and oligonucleotide barcodes at the appropriate stage, improving sequencing accuracy through timed delivery while maintaining relatively simple microcapsule construction
Solution Approach 2:
The microcapsules are designed as single-use, degradable containers that are discarded after delivering their contents. This approach simplifies the overall system by eliminating the need for complex recovery or reuse mechanisms, while still achieving precise control over when reagents are released
3Productivity
If multiple reagents and barcodes are contained in microcapsules, then the efficiency of sample preparation is improved, but the manufacturing complexity increases
Solution Approach 1:
Different reagents, enzymes, and oligonucleotide barcodes are segmented into separate microcapsules within the array. This allows each microcapsule to be manufactured and filled independently using standardized processes, improving overall manufacturing ease while enabling efficient parallel sample preparation through the array configuration
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
The device enables efficient sample preparation by allowing controlled release of reagents and oligonucleotide barcodes, improving the accuracy and efficiency of downstream applications such as sequencing reactions.
Implementation Method 1
the first microcapsule is degradable upon the application of a stimulus to the first microcapsule
Implementation Method 2
The chemical cross-linker, for example, may be a disulfide bond
Implementation Method 3
The reducing agent may be, for example, dithiothreitol (DTT) or tris(2-carboxyethyl) phosphine (TCEP)
Data Source
AI summary
This disclosure provides microwell capsule array devices. The microwell capsule array devices are generally capable of performing one or more sample preparation operations. Such sample preparation operations may be used as a prelude to one more or more analysis operations. For example, a device of this disclosure can achieve physical partitioning and discrete mixing of samples with unique molecular identifiers within a single unit in preparation for various analysis operations. The device may be useful in a variety of applications and most notably nucleic-acid-based sequencing, detection and quantification of gene expression and single-cell analysis.