ECL-Based Electrode Nanofunctionalization for DNA Methylation Detection
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Solution Overview
Problem
Current methods for detecting DNA methylation, such as hydrogen sulfite treatment, are inefficient, time-consuming, and costly due to the need for stringent chemical and temperature conditions, and require specialized equipment and technicians, while existing ECL detection methods lack sensitivity and specificity for nucleic acid-specific site modifications.
Innovation Solution
Development of an ECL-based electrode and sensor with a nanofunctionalized surface modification using electrocatalysts and metal nanoparticles, combined with an ECL nanoprobe, to enhance detection sensitivity and specificity through interface enhancement and a double amplification policy, allowing for the detection of nucleic acid-specific site modifications without pretreatment of nucleic acids.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If hydrogen sulfite treatment is used for DNA methylation detection, then methylation detection can be realized, but the detection process becomes complex, time-consuming, and costly
Solution Approach 1:
The patent extracts and eliminates the complex hydrogen sulfite treatment step from the detection process. By using antibodies that directly recognize methylated DNA sequences, the method removes the need for chemical conversion and PCR amplification, simplifying the overall detection workflow while maintaining methylation detection capability
Solution Approach 2:
The patent replaces the chemical mechanism of hydrogen sulfite treatment with a biological recognition mechanism using antibodies. This substitution eliminates the need for stringent chemical conditions and complex enzymatic reactions, reducing both process complexity and detection time
2Measurement precision
If hydrogen sulfite treatment and PCR or sequencing are used, then methylation detection can be performed, but specialized equipment and technicians are required
Solution Approach 1:
The patent employs disposable, pre-formed antibodies that can be easily obtained and applied without requiring specialized laboratory infrastructure. The antibody-based method eliminates the need for expensive PCR equipment and specialized technicians, making the detection accessible to routine laboratories
Solution Approach 2:
The patent introduces antibodies as intermediary molecules that bridge the detection target (methylated DNA) and the detection signal. This intermediary approach simplifies the detection system by eliminating the need for direct interaction between complex reagents and equipment, thereby reducing operational complexity
3Productivity
If existing ECL detection methods are used for nucleic acid modifications, then detection can be performed, but sensitivity and specificity are insufficient
Solution Approach 1:
The patent applies local quality by using antibodies with highly specific binding sites that recognize particular methylated DNA sequences. This specificity ensures that the detection is localized to exact matches of the target sequence, eliminating cross-reactivity with non-methylated or differently methylated sequences, thereby achieving high sensitivity and specificity
Solution Approach 2:
The patent combines ECL technology with antibody-based recognition and nanomaterial enhancement. This composite approach integrates the rapid detection capability of ECL with the high specificity of antibody binding and the signal amplification provided by nanomaterials, achieving both speed and precision simultaneously
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 achieves high sensitivity and specificity for nucleic acid-specific site modifications, reducing the detection limit to the fM level and enabling rapid, simple, and cost-effective detection of DNA methylation, suitable for various target nucleic acid-specific site modifications.
Implementation Method 1
ECL-based electrode, a manufacturing method for an ECL-based electrode, an ECL sensor
Implementation Method 2
mixing an electrocatalytic solution and metal nanoparticles and thereafter dropping a mixed particle suspension onto a surface of an electrode
Data Source
AI summary
A manufacturing method for an ECL (Electrochemiluminescence)-based electrode according to an embodiment includes a step of mixing an electrocatalytic solution and metal nanoparticles and thereafter dropping a mixed particle suspension onto the surface of an electrode and obtaining a base electrode co-modified by an electrocatalyst-metal nanoparticle.