Aerolysin Nanopore Decoding Hybrid DNA-Polymer Data Storage
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Solution Overview
Problem
Current molecular data storage technologies face challenges in achieving high density and long-term storage while maintaining simplicity, robustness, and precision, particularly in writing and reading mechanisms for DNA-based data storage systems.
Innovation Solution
The development of a molecular data storage medium using sequence-controlled DNA-polymer hybrid structures encoded with aerolysin nanopores, employing deep learning to process current signals for accurate decoding, allowing for single-bit resolution without compromising information density.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If mutant hemolysin pores are used for nucleotide discrimination, then sequence-dependent current signatures are achieved, but current variance increases making direct relationship between observed current and polynucleotide challenging
Solution Approach 1:
The patent applies parameter changes by systematically mutating specific amino acid residues in the hemolysin pore (particularly in the beta-barrel structure) to optimize the balance between discrimination capability and signal stability. Through rational design of mutations at key positions, the pore's interaction characteristics with different nucleotides are tuned to reduce current variance while maintaining sequence-dependent signatures.
Solution Approach 2:
The patent replaces the mechanical/passive pore structure with an engineered biological nanopore system that uses optimized protein-nucleic acid interactions. By substituting the wild-type hemolysin with rationally designed mutants, the system achieves more reliable and interpretable current signatures for sequencing applications.
2Measurement precision
If aerolysin nanopores are used for decoding, then single-bit resolution is achieved, but system complexity increases
Solution Approach 1:
The patent uses aerolysin nanopores as intermediary elements that translate complex molecular information (polymer sequences) into simplified electrical signals (current blockades). The nanopore acts as a mediator that converts biochemical data into an readable electrical format, enabling high-precision decoding while managing system complexity through this intermediate conversion step.
Solution Approach 2:
The patent replaces complex mechanical or chemical reading mechanisms with an electrical sensing approach using aerolysin nanopores. This substitution enables single-bit resolution through electrical current measurements, achieving high precision while the modular nanopore system manages complexity through standardized biological components.
3Quantity of substance
If DNA is used for data storage, then higher density and longer-term storage are achieved, but writing and reading mechanisms become complicated
Solution Approach 1:
The patent replaces complex chemical synthesis and sequencing methods with a streamlined nanopore-based system. By using aerolysin nanopores for reading and standardized DNA synthesis protocols for writing, the system achieves high storage density while simplifying the operational complexity through electrical measurement and automated synthesis techniques.
Solution Approach 2:
The patent applies universality by using aerolysin nanopores that can discriminate multiple nucleotide types (A, T, G, C) with a single pore structure. This multi-functional capability allows the same nanopore system to read any DNA sequence, reducing the need for multiple specialized reading mechanisms and thereby simplifying the overall system while maintaining high storage density.
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 enables precise and reliable decoding of digital data with high accuracy, demonstrated by reading 1-bit, 2-bit, 3-bit, and 4-bit barcodes with 98.7%, 96.4%, 95.0%, and 76.9% accuracy respectively, offering a promising platform for biological-inspired data processing.
Implementation Method 1
measuring voltage-driven ionic transport through the pore in the presence of substrate molecules
Implementation Method 2
Nanopore sensing is an approach that relies on the exploitation of individual binding or interaction events between to-be-analysed molecules and pore-forming macromolecules
Implementation Method 3
measuring voltage-driven ionic transport through the pore
Data Source
AI summary
Systems and methods for data storage and readout using hybrid nucleic acid-polymeric molecules are herein disclosed. A molecular data storage medium is presented comprising a header and a footer, each comprising or consisting of at least one unit of a first chemical species; and a sequence-controlled polymeric chain of a second chemical species located between said header and said footer, said polymeric chain encoding for a desired bitstream-format media. A nanopore-based device and methods for decoding digital information from the molecular data storage