Programmable Oligonucleotide Synthesis via AT Content Control
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Solution Overview
Problem
Current methods for preparing synthetic nucleic acids, such as DNA and RNA, face challenges in achieving high yields and sequence diversity due to limitations in controlling thermodynamic parameters during assembly, particularly with high AT content sequences, which affect hybridization efficiency and the production of correct target sequences.
Innovation Solution
The method involves controlling the quantitative proportions of nucleic acid fragments with varying AT content to modulate thermodynamic parameters, using larger amounts of fragments with high AT content to improve hybridization efficiency and yield, and employing a stored-program device to optimize fragment compositions based on known regularities for synthesizing diverse sequences on a microfluidic support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional methods are used for preparing synthetic nucleic acids, then the synthesis process is simple, but the yield of correct target sequences is low and sequence diversity is limited
Solution Approach 1:
The invention changes the concentration parameters of nucleic acid fragments with different AT content to modulate thermodynamic parameters. By adjusting the quantitative proportions of fragments with high versus low AT content, the hybridization efficiency is optimized, resolving the contradiction between yield improvement and control complexity.
Solution Approach 2:
The invention employs a stored-program device that uses known regularities about AT content and hybridization to automatically control fragment compositions. This feedback mechanism optimizes the synthesis process by adjusting parameters based on pre-stored knowledge, improving yield while managing complexity through automation.
2Reliability
If larger amounts of fragments with high AT content are used, then hybridization efficiency improves, but the complexity of controlling fragment compositions increases
Solution Approach 1:
The stored-program device implements feedback control by automatically adjusting fragment compositions based on pre-programmed knowledge of hybridization regularities. This ensures high AT content fragments are used in larger amounts for improved efficiency while the system manages the complexity of composition control through automated feedback mechanisms.
Solution Approach 2:
The system uses stored knowledge about hybridization regularities to automatically self-regulate fragment compositions. The programmed device serves itself by making composition adjustments based on embedded knowledge, improving reliability while minimizing the need for external complex control interventions.
3Adaptability or versatility
If conventional synthesis methods are used, then the equipment is simple, but the sequence diversity and programmable control are limited
Solution Approach 1:
The stored-program device provides universal control capability that can handle diverse sequence requirements through programmable parameters. By encoding hybridization knowledge and composition control rules in the program, the system achieves high sequence diversity while managing complexity through a single multi-functional programmed controller rather than multiple specialized systems.
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 significantly enhances the yield of correct nucleic acid double strands by up to a factor of 100 or 1000, achieving high sequence diversity and programmable control, suitable for applications in molecular biology, gene synthesis, and microarray production.
Implementation Method 1
the binding of two nucleic acid fragments to one another... hybridization efficiency... affecting the production of correct target sequences
Data Source
AI summary
The invention relates to methods for the preparation of synthetic nucleic acids, such as double-stranded nucleic acids. The methods involve the preparation of a multiplicity of different nucleic acid fragments by solid-phase synthesis, and the joining together of at least two of the multiplicity of the nucleic acid fragments by binding to one another or by covalent linkage. In the methods at least some of the nucleic acid fragments have a high AT content and are used in an increased amount relative to other fragments for the joining step.