Sequencer-Specific Nucleic Acid Barcodes for Demultiplexing Error Reduction
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Solution Overview
Problem
Next-generation sequencing technologies face challenges in accurately distinguishing between nucleic acid samples due to sequencing errors, particularly in demultiplexing, which can lead to sample contamination and incorrect identification of microbial sequences in complex communities like the gut microbiome.
Innovation Solution
A method involving the purification of nucleic acids, removal of non-informative RNA, preparation of libraries with sequence instrument-specific barcodes, and analysis using algorithms for genomic classification to enhance the accuracy of microbial identification and quantification, while also generating customized barcode sequences to minimize sequencing errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If nucleic acid samples are barcoded for multiplexed sequencing, then productivity increases by analyzing multiple samples simultaneously, but measurement precision deteriorates due to sequencing errors causing demultiplexing mistakes
Solution Approach 1:
The patent applies preliminary action by performing error correction coding during the barcode design phase before sequencing occurs. The barcodes are pre-configured with redundant information and error-detecting/correcting codes that enable accurate sample identification even when sequencing errors occur during multiplexed analysis, thus maintaining measurement precision while enabling high throughput
Solution Approach 2:
The patent changes the parameter of barcode structure by incorporating error correction codes and adjusting barcode length and composition. This modifies the informational content and redundancy of barcodes to provide robustness against sequencing errors, allowing accurate demultiplexing while maintaining high sample throughput
2Ease of operation
If standard barcodes are used for sample multiplexing, then ease of operation improves by using universal protocols, but reliability deteriorates due to demultiplexing errors and sample contamination
Solution Approach 1:
The patent applies preliminary action by pre-designing barcodes with error correction capabilities built in before the sequencing experiment. This allows the use of universal multiplexing protocols while ensuring reliable sample assignment, as the error correction mechanisms are already embedded in the barcode structure itself
Solution Approach 2:
The patent implements feedback through error detection and correction mechanisms that monitor and correct demultiplexing errors. The system uses the redundant information in error-correcting barcodes to detect and correct sequencing errors, providing feedback that ensures accurate sample identification even when using simplified universal protocols
Data Source
AI summary
Provided herein are compositions and methods for analyzing nucleic acids in a sample. Compositions include simple barcode sets having reduced DNA sequencing instrument-specific error rates. Methods include methods to deconvolute sequence reads from different samples.