Nanochannel DNA Assembly With Electrode Control for Long Constructs
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Solution Overview
Problem
Current DNA synthesis and assembly technologies are limited in producing very long DNA segments, such as those in the range of 10,000 to hundreds of millions of bases, and require complex, costly, and time-consuming lab techniques, hindering the advancement of synthetic biology.
Innovation Solution
A nanochannel-based method for assembling long DNA using embedded electrodes to control DNA motion, enabling precise and scalable assembly of DNA segments up to 100 Mb range, utilizing standard semiconductor integrated circuit microchips for low-cost mass production and automation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If Gibson Assembly or REXER method is used to assemble long DNA, then DNA assembly capability is improved, but device complexity and cost increase significantly
Solution Approach 1:
The patent replaces complex biochemical assembly processes (Gibson Assembly, REXER) with a simplified nanochannel-based system that uses embedded electrodes to apply electrical forces for DNA motion control and positioning. This substitution of mechanical/electrical control for biochemical complexity directly reduces device and process complexity while maintaining long DNA assembly capability
Solution Approach 2:
The patent changes the fundamental parameters of DNA assembly by transitioning from solution-phase biochemical reactions to nanochannel-constrained assembly with electrical field control. This parameter change enables precise positioning and reduces the complexity of assembly conditions while achieving hundreds of kilobases to megabase scale DNA construction
2Length of moving object
If Gibson Assembly is used for DNA assembly, then assembly capability is improved, but assembly time increases
Solution Approach 1:
The patent replaces time-consuming biochemical incubation and manipulation steps with rapid electrical field-driven DNA transport and positioning in nanochannels. This mechanical/electrical substitution dramatically reduces assembly time while enabling long DNA construction
Solution Approach 2:
The patent implements continuous DNA assembly operations through automated nanochannel processing, where DNA segments are continuously loaded, positioned, and joined without the intermittent manual intervention required by traditional methods. This continuous operation reduces total assembly time significantly
3Length of moving object
If complex lab techniques are used for DNA assembly, then DNA assembly capability is improved, but manufacturing cost increases
Solution Approach 1:
The patent replaces expensive, complex biochemical reagents and procedures with a manufacturable nanochannel device using standard semiconductor fabrication techniques. This substitution enables low-cost mass production while achieving long DNA assembly capability
Solution Approach 2:
The patent creates a universal nanochannel platform that can assemble various long DNA constructs using the same device architecture and control methodology. This universality enables single-device multi-purpose use, reducing per-unit manufacturing and operational costs
4Productivity
If automated DNA assembly is implemented, then productivity is improved, but device complexity increases
Solution Approach 1:
The patent implements automation through embedded electrodes that provide direct electrical control of DNA motion and positioning in nanochannels. This electrical control mechanism achieves high productivity with relatively simple device architecture compared to complex robotic or biochemical automation 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
Enables efficient, fast, and automated assembly of long DNA constructs, overcoming length and content limitations, facilitating the development of synthetic biology applications.
Implementation Method 1
using embedded electrodes to apply electrical forces to control the DNA motion in the channel
Data Source
AI summary
Provided herein are nanochannel devices fabricated in a substrate for holding an internal construct in a channel, wherein the construct comprises DNA, with the construct positioned so that a joinable end of the DNA is extending outside the channel into an accessible inlet reservoir. Also provided herein are methods for long DNA assembly, comprising introducing a shuttle with a block group in a nanochannel, introducing joinable DNA segment solution, performing a joining reaction, and advancing the shuttle in the channel while still leaving the tail in the channel.