Enzymatic DNA Synthesis Yield via Cation Mixture
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for large-scale DNA synthesis, particularly enzymatic synthesis, face challenges in yield and efficiency, with chemical synthesis being inefficient and cell-based processes being costly and unsuitable for industrial scales, while cell-free enzymatic methods struggle with scaling up and maintaining enzyme activity due to high ionic strength and pH control issues.
Innovation Solution
The use of nucleotide complexes with a mixture of divalent and monovalent cations, which reduces the amount of monovalent cations and provides a divalent cation as a counter-ion, thereby reducing the ionic strength and eliminating the need for additional magnesium or manganese, enhancing the yield and efficiency of DNA synthesis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If chemical synthesis methods are used for large-scale DNA production, then production volume can be increased, but yield efficiency decreases due to capping losses with each nucleotide addition
Solution Approach 1:
The patent changes the chemical parameters of synthesis by switching from chemical phosphoramidite methods to enzymatic polymerization reactions. This fundamental parameter change enables high-yield DNA synthesis at industrial scales by avoiding the cumulative capping losses that limit chemical synthesis to 50 nucleotides or less.
2Quantity of substance
If cell-based processes are used for DNA amplification, then very large volumes can be produced, but setup costs increase and clinical/therapeutic suitability decreases
Solution Approach 1:
The patent extracts the DNA synthesis function from living cells, creating a cell-free enzymatic system. This extraction eliminates the need for cell culture infrastructure and reduces setup costs while maintaining the ability to produce large volumes of DNA suitable for clinical and therapeutic applications.
Solution Approach 2:
The cell-free system uses purified enzymes and nucleotides that self-assemble into functional DNA synthesis machinery without requiring living cell infrastructure. The system serves itself through in vitro enzymatic reactions, eliminating the need for complex cell culture facilities and reducing setup costs.
3Quantity of substance
If conventional nucleotide salts are used in enzymatic DNA synthesis, then solubility is maintained, but ionic strength increases reducing enzyme activity and DNA yield
Solution Approach 1:
The patent uses composite nucleotide formulations containing mixtures of monovalent and divalent cations (such as lithium, sodium, potassium, and magnesium). This composite approach optimizes both solubility and ionic strength characteristics, maintaining nucleotide dissolution while minimizing inhibitory effects on polymerase enzyme activity and DNA yield.
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 increases the yield and efficiency of DNA synthesis, allowing for the production of commercial quantities faster and reducing the cost, while maintaining the fidelity and quality of the DNA product, making it suitable for industrial and therapeutic applications such as mRNA vaccine production.
Implementation Method 1
contacting a template with at least one nucleotidyltransferase in the presence of one or more nucleotide complexes
Implementation Method 2
obtain a nucleotide complex in solution, wherein said complex is a nucleotide associated with between 0.2 and 2 divalent cations and between 0.2 and 2.5 monovalent cations
Data Source
AI summary
The present invention relates to an improved process for synthesis of deoxyribonucleic acid (DNA), in particular cell-free enzymatic synthesis of DNA, preferably on a large or industrial scale, with an improved yield and/or with an improved efficiency. The invention requires the use of nucleotide complexes wherein the nucleotide is associated with a mixture of divalent and monovalent cations. Preferably, the divalent cation may be magnesium or manganese.