Synthesis and storage of DNA having attached nanostructure
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Solution Overview
Problem
Current DNA storage systems are susceptible to environmental factors and require labor-intensive column-based purification for buffer exchange during DNA writing, which is costly and inefficient.
Innovation Solution
Utilizing nanostructures, particularly silica nanoparticles with magnetic properties, for immobilizing DNA during assembly and storage, enabling efficient buffer exchange and protection from environmental factors through magnetic separation and automation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If column-based purification is used for buffer exchange during DNA writing, then buffer exchange is achieved, but the process becomes labor-intensive and costly
Solution Approach 1:
The patent replaces the mechanical column-based purification system with a magnetic field-based separation system. Magnetic nanoparticles with surface-bound DNA oligos are manipulated using magnetic fields to achieve buffer exchange and DNA assembly, eliminating the need for physical column processing and significantly improving automation capability and productivity
Solution Approach 2:
The patent introduces magnetic nanoparticles as an intermediary carrier that binds DNA oligos and enables their manipulation, separation, and assembly through magnetic field control. This intermediary system facilitates buffer exchange and DNA writing operations without requiring labor-intensive column-based purification
2Device complexity
If DNA is stored without protection, then storage simplicity is maintained, but DNA is susceptible to environmental damage
Solution Approach 1:
The patent uses composite magnetic nanoparticles consisting of a magnetic core (e.g., iron oxide) coated with silica or other protective materials, and further functionalized with DNA-binding groups. This composite structure provides both magnetic manipulability and protective shielding against environmental factors while maintaining storage simplicity
Solution Approach 2:
The patent creates a protective environment around DNA by coating magnetic nanoparticles with inert materials such as silica shells or polymer layers that act as barriers against reactive oxygen, nucleases, and other environmental damage, effectively providing an inert protective atmosphere for the stored DNA
3Device complexity
If traditional storage mediums are used, then simplicity is maintained, but storage density and retention duration are limited
Solution Approach 1:
The patent fundamentally changes the physical state and organization of stored DNA by immobilizing it on magnetic nanoparticle surfaces rather than storing it in bulk solution or on traditional media. This parameter change in organization enables high-density storage while maintaining simplicity through magnetic field-based manipulation and retrieval
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 method provides stable, cost-effective, and automated DNA storage by immobilizing DNA on nanostructures, protecting it from environmental damage and eliminating the need for column-based purification, while allowing high-density storage and retrieval.
Implementation Method 1
The nanostructure may be a nanoparticle, such as a magnetic nanoparticle (MNP) having a silica surface
Implementation Method 2
A suitable nanostructure material is silica, due to its chemical and thermal stability, and its outstanding barrier properties
Data Source
AI summary
Using a nanostructure as a support structure for DNA, particular for binary data-encoding DNA, both during the writing or assembly step and during long-term storage. The nanostructure may be a nanoparticle, such as a magnetic nanoparticle (MNP), e.g., a silica-based MNP. The nanostructure serves as a carrier for DNA storage due to the high-aspect-ratio surface area of the nanostructure, which enables high-density DNA immobilization on the surfaces. When silica nanostructures are used, DNA encapsulated within the silica endures exposure to high temperatures, oxygen radicals, and ultraviolet light without significant damage, thus, supporting long term storage of the DNA. Magnetic nanostructures facilitate, via magnetic separation, buffer exchanges and removal of unligated strands.