Electrochemical Deprotection for Accurate Nucleic Acid Synthesis
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Solution Overview
Problem
Existing solid-phase chemical synthesis methods for nucleic acids, such as phosphoramidite synthesis, suffer from high error rates and limitations in synthesizing practical lengths of nucleic acids.
Innovation Solution
A nucleic acid synthesis apparatus comprising a first substrate with a functionalized surface for immobilizing nucleic acids, a second substrate with an array of electrodes for electrochemical acid generation, and a transporter for aligning the substrates, along with a method involving voltage application and substrate alignment to induce deprotection and coupling reactions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If solid-phase chemical synthesis methods (phosphoramidite synthesis) are used, then nucleic acids can be synthesized, but error rates are high and practical length limitations occur
Solution Approach 1:
The synthesis system is divided into separate functional modules: a reusable substrate containing synthesis sites, a separate reagent supply system, and an electrochemical deprotection system. This segmentation allows each component to be optimized independently, improving both accuracy and length control while enabling modular scaling.
Solution Approach 2:
The patent replaces traditional mechanical liquid handling and chemical deprotection with an electrochemical system. Electrodes apply controlled voltages to induce deprotection reactions at specific synthesis sites, providing precise spatial and temporal control that reduces errors and enables longer synthesis sequences.
2Productivity
If traditional solid-phase synthesis is used, then nucleic acid synthesis can proceed, but reagent consumption is high and costs increase
Solution Approach 1:
The substrate is designed as a universal reusable platform that can perform multiple synthesis cycles. The same substrate with its array of synthesis sites can be used repeatedly by cycling through deprotection and reagent addition steps, eliminating the need for disposable columns and significantly reducing reagent consumption per synthesis run.
Solution Approach 2:
Instead of discarding the synthesis support after each run, the patent implements a recovery and reuse system. The substrate is cleaned and regenerated between cycles, allowing the same physical support to be used hundreds of times, thereby recovering the investment in the synthesis platform and reducing per-unit synthesis costs.
3Reliability
If complex synthesis procedures are implemented to improve accuracy, then error rates decrease, but device complexity and operational difficulty increase
Solution Approach 1:
The electrochemical system provides self-aligned, automated control of deprotection reactions. The electrodes are positioned in direct contact with the substrate, and voltage application automatically triggers deprotection at the intended sites without requiring complex liquid handling or manual intervention, simplifying operation while maintaining high fidelity.
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 apparatus and method enable efficient synthesis of nucleic acids with reduced errors and improved productivity by reusing the second substrate, thereby saving costs and reagents.
Implementation Method 1
an array of first electrodes in operable communication with the regions and configured to induce electrochemical acid generation in the deprotection solution
Data Source
AI summary
An apparatus for synthesizing nucleic acids and a method for synthesizing nucleic acids using the same. The apparatus includes a first substrate including a surface on which the nucleic acids are synthesized, a second substrate including a deprotection solution, a transporter configured to move the first substrate or the second substrate, and a transporter controller in operable communication with the transporter.