DNA Origami Nanostructure for High-Throughput Mechanochemical Biosensing
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Solution Overview
Problem
Current mechanochemical biosensing platforms using optical tweezers have low throughput as they can only investigate one template at a time, limiting their ability to detect multiple targets efficiently.
Innovation Solution
A DNA origami nanostructure with multiple slots for recognition elements, such as aptamers or DNA strands, is designed to facilitate high-throughput mechanochemical biosensing, allowing for quick probe switching and detection of multiple targets through mechanical signal changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional carbon or metal based substrates are used for nanoassembly, then mechanical strength and stability are improved, but biocompatibility and ease of incorporating functional components deteriorate
Solution Approach 1:
The patent employs DNA origami nanostructures as a composite material platform that combines the structural precision and programmability of DNA with functional components such as aptamers, peptides, and nanoparticles. This composite approach enables both mechanical stability through the origami framework and biocompatibility through the biological nature of DNA and its ability to incorporate functional elements.
2Measurement precision
If optical tweezers are used for mechanochemical sensing, then force and spatial resolution are improved, but throughput deteriorates
Solution Approach 1:
The patent segments the sensing function into multiple independent recognition elements (aptamers, DNA strands) positioned at different locations on the DNA origami nanostructure. Each slot can independently bind different targets, allowing parallel detection of multiple analytes simultaneously using optical tweezers, thereby maintaining high measurement precision while achieving multiplexed throughput.
Solution Approach 2:
The DNA origami nanostructure serves as a universal platform that can accommodate various types of recognition elements (aptamers, DNA strands, peptides) in its modular slot architecture. This multi-functional design allows a single origami structure to detect multiple different targets, enabling high-throughput sensing without sacrificing the force resolution capabilities of optical tweezers.
3Measurement precision
If multiple recognition elements are incorporated into DNA origami, then detection sensitivity and multiplexing capability are improved, but device complexity increases
Solution Approach 1:
The patent divides the DNA origami structure into modular slots, each capable of holding a specific recognition element. This segmentation allows systematic organization of multiple recognition elements without creating chaotic complexity, as each slot is a standardized unit that can be independently designed and assembled into the overall nanostructure.
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 DNA origami platform enables detection of targets like PDGF at 10 pM within 10 minutes, significantly improving detection limits and time compared to prior art, and allows for multiplex sensing by differentiating targets through size changes, enhancing the sensitivity and versatility of mechanochemical sensing.
Implementation Method 1
Mechanochemistry is an emerging discipline that deals with the coupling of mechanical and chemical processes. Under mechanical stress, the stability of covalent or non-covalent bonds changes, which either strengthens or weakens molecular structures.
Implementation Method 2
optical tweezers are an ideal tool used for mechanochemical sensing
Data Source
AI summary
A biosensing platform capable of high throughput mechanochemical biosensing comprising a DNA origami nanostructure having a plurality of slots into which recognition elements are strategically placed and apparatus that senses a change in the origami nanostructure in response to the introduction of a target where the apparatus includes a signal transduction unit and signal sensor which exploits mechanical signals in a recognition element which signal includes one or more mechanical tension or mechanochemical rearrangement event. The nanostructure is preferably a 2-dimensional or 3-dimensional arrangement of tiles linked by locking elements, such as aptamers that will open in response to an event such as exposure to a drug molecule, DNA, RNA or protein target.