Sequence-Verified Nucleic Acid Synthesis via Parallel Oligonucleotide Arrays
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Solution Overview
Problem
Current methods for synthesizing synthetic nucleic acids, such as DNA, suffer from high error rates and high costs, particularly in producing high-quality variant libraries and custom gene synthesis, due to limitations in oligonucleotide production and sequencing technologies, which hinder efficient gene assembly and molecular biology applications.
Innovation Solution
A method for preparing sequence-verified nucleic acid molecules involves creating a clonal library, sequencing, and retrieving error-free nucleic acid fragments using next-generation sequencing technologies, allowing for the physical separation and retrieval of correct sequences from a mixture, thereby reducing errors and costs in gene synthesis and molecular biology procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional oligonucleotide synthesis methods are used, then production capacity is sufficient for current applications, but error rates are high and costs are excessive for high-quality variant libraries and custom gene synthesis
Solution Approach 1:
The patent segments the synthesis process by using multiple parallel columns (e.g., 96-column arrays) to simultaneously produce different oligonucleotide sequences. Each column operates independently to synthesize specific sequences, allowing high-throughput production while maintaining quality control through individual sequence verification capability.
Solution Approach 2:
The patent implements preliminary sequence verification through sequencing before final assembly and application. This preliminary action identifies and filters out erroneous sequences early in the process, ensuring that only high-quality oligonucleotides proceed to gene synthesis, thereby improving overall sequence accuracy without compromising productivity.
2Reliability
If sequence verification and retrieval methods are implemented, then error rates decrease and quality improves, but process complexity and initial costs increase
Solution Approach 1:
The patent employs universal sequencing and verification methods that can be applied across all synthesized oligonucleotide sequences regardless of their specific application. The same verification platform serves multiple purposes: quality control, sequence confirmation, and error filtering, thereby managing complexity through standardized multi-functional procedures rather than application-specific complex workflows.
Solution Approach 2:
The patent uses copying techniques where verified correct sequences are identified through sequencing and then retrieved or replicated for final use. Instead of modifying the entire synthesis process, the method creates a verified copy or selects from synthesized copies, simplifying the approach by separating synthesis from verification and retrieval into distinct, manageable steps.
3Productivity
If parallel synthesis across multiple columns is used, then productivity increases for multiplicity of sequences, but error accumulation and quality control difficulty increase
Solution Approach 1:
The patent implements feedback mechanisms where each parallel column's output is individually sequenced and verified. This feedback loop allows real-time or post-synthesis quality assessment of each parallel reaction, enabling identification and exclusion of erroneous sequences while maintaining high throughput. The feedback ensures that productivity gains from parallel processing do not compromise overall sequence accuracy.
Data Source
AI summary
The invention relates to methods and devices for preparing synthetic nucleic acids.