Droplet Cell Barcoding for Phenotype-Genotype Association
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Solution Overview
Problem
Existing methods for processing biological samples are inefficient and time-consuming, failing to accurately analyze cell-to-cell variations and often result in the loss of sample information.
Innovation Solution
A method involving droplets containing nucleic acid barcode molecules and biological particles, where physical properties of the particles are sensed and associated with their nucleic acid sequences through optical detection and sequencing, allowing for the generation of barcoded nucleic acid molecules and data sets to link phenotypic and genetic information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If existing sample processing methods are used, then sample preparation can be completed, but the methods are time-consuming and inefficient
Solution Approach 1:
The sample processing method is divided into distinct functional modules: droplet generation module, sensing module, barcode sequencing module, and data association module. Each module performs a specific function independently, allowing for optimized processing at each stage and enabling parallel processing of multiple samples simultaneously, thereby improving overall efficiency and reducing processing time.
2Loss of information
If existing sample processing methods are used, then samples can be processed, but sample information is lost
Solution Approach 1:
Physical properties of biological particles are sensed and recorded before the particles are subjected to processing steps that might alter or destroy them. The sensing occurs in intact droplets containing the original biological particles, ensuring that phenotypic information is captured prior to any potential information loss during subsequent nucleic acid extraction and sequencing operations.
Solution Approach 2:
Nucleic acid barcode molecules serve as intermediaries that link the physical/phenotypic properties of biological particles to their genetic information. The barcodes are associated with specific particles through the droplet system, allowing indirect but accurate transfer of information from the particle's physical state to its genetic sequence data without direct interference with the particle itself.
3Measurement precision
If existing sample processing methods are used, then samples can be analyzed, but cell-to-cell variations cannot be accurately analyzed
Solution Approach 1:
Each droplet is treated as an independent analytical unit containing a single biological particle, allowing for localized measurement and analysis of individual cell properties. This particle-by-particle approach enables detection of cell-to-cell variations by comparing properties across multiple individual droplets, with each droplet's data independently recorded and associated with its specific particle's genetic information.
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 analysis of cell-to-cell variations by linking physical properties with nucleic acid sequences, improving sample preparation methods for accurate genetic and phenotypic characterization.
Implementation Method 1
which data is generated upon sensing the biological particle
Implementation Method 2
imaging the droplet to optically detect the particle, thereby identifying the one or more optical properties of the particle
Data Source
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AI summary
Provided herein are methods and systems for processing a nucleic acid molecule from a biological particle (e.g., cell). A plurality of partitions (e.g., droplets) may be generated such that partitions of the plurality of partitions each include a biological particle (e.g., cell) comprising the nucleic acid molecule and a particle (e.g., bead). The partitions can be processed (e.g., imaged) to obtain one or more physical and/or optical properties of their respective biological particles. The nucleic acid molecules included in the partitions can be barcoded and sequenced (e.g., using nucleic acid barcode molecules coupled to the particles of the partitions) to generate nucleic acid sequences of the nucleic acid molecules. The nucleic acid sequences can be electronically associated with the one or more optical properties of the biological particles.