DNA Sensors Multiplexing Golgi Network Localization
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Solution Overview
Problem
Current methods face challenges in simultaneously mapping multiple cellular pathways within the same cell using DNA sensors, particularly in achieving precise positioning and independent functionality of multiple DNA nanodevices in subcellular environments, which is essential for multiplexed sensing and therapeutic applications.
Innovation Solution
The development of a method called 'SimpHony' that involves engineering DNA sensors with Nucleic Acid Assembly and fluorophores to target specific cellular pathways, allowing for simultaneous pH mapping by optimizing the positioning of fluorophore pairs and localizing DNA sensors in the Golgi network of scFv-Furin expressing cells, ensuring independent operation and maximum FRET efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple DNA sensors are introduced into the same cell to map multiple cellular pathways, then the capability for multiplexed sensing is improved, but the complexity of positioning and maintaining independent functionality of each sensor increases
Solution Approach 1:
The patent divides the cellular sensing task into separate DNA sensor modules, each targeted to specific cellular pathways through engineered targeting sequences. Each DNA sensor operates independently in its designated pathway, allowing multiplexed monitoring of multiple pathways simultaneously without cross-interference, thus resolving the contradiction between versatility and complexity.
Solution Approach 2:
The patent applies local quality by engineering DNA sensors with pathway-specific targeting capabilities, where each sensor has customized molecular recognition elements that bind to specific proteins or structures in particular cellular pathways. This ensures each sensor functions optimally in its local environment while maintaining independence from other sensors.
2Measurement precision
If fluorophore pairs are positioned on DNA sensors to maximize FRET efficiency, then the measurement precision of pH mapping is improved, but the difficulty of optimizing spectral compatibility and positioning increases
Solution Approach 1:
The patent performs preliminary optimization of fluorophore pair selection and positioning on DNA sensors before cellular application. By pre-characterizing FRET efficiency and spectral compatibility of fluorophore combinations in controlled environments, the patent establishes optimized configurations that can be directly applied to DNA sensors, reducing the complexity of in-cell optimization while maintaining high measurement precision.
Solution Approach 2:
The patent systematically varies parameters such as fluorophore distance, orientation, and spectral properties on DNA sensors to maximize FRET efficiency. By optimizing these parameters in silico and in vitro before cellular application, the patent achieves high measurement precision while minimizing the complexity of in-cell adjustments.
3Measurement precision
If DNA sensors are engineered to follow specific cellular pathways, then the specificity of pathway mapping is improved, but the complexity of engineering and validating independent pathway targeting increases
Solution Approach 1:
The patent uses intermediary molecular elements such as engineered protein domains, peptide tags, or binding motifs as mediators between DNA sensors and cellular pathways. These intermediaries facilitate specific pathway targeting by mediating the interaction between DNA sensors and pathway-specific proteins, reducing the engineering complexity while maintaining high pathway mapping specificity.
Solution Approach 2:
The patent employs copying strategies by using validated targeting sequences from well-characterized pathway markers and replicating their recognition specificities in the DNA sensor design. By copying proven targeting mechanisms from literature or established systems, the patent reduces the complexity of de novo pathway targeting engineering while maintaining high specificity.
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 simultaneous tracking and pH measurement of multiple cellular pathways within the same cell, providing high reproducibility and clarity in capturing pH variations, thereby facilitating a deeper understanding of complex intracellular trafficking events and cell-cell communication.
Implementation Method 1
optimizing their position on the DNA sensors to maximise their efficiency for multiplexing of DNA sensors
Data Source
AI summary
The present disclosure relates to a method of multiplexing DNA sensors and optionally measuring pH in cell, a method of localizing DNA sensor in Golgi Network of scFv-Furin expressing cell and a method of identifying optimal location of fluorophore pair on the DNA sensor for multiplexing DNA sensors. The DNA sensors of the present disclosure follow independent cellular pathways and do not interact with or compromise functionality of another DNA sensor.