Magnetic Nanoparticle Nucleic Acid Detection Kit
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Solution Overview
Problem
Current PCR technologies are inefficient and costly, requiring extensive time and equipment to detect low-concentration target nucleic acids, especially those with short lifespans, and often result in detection errors due to the complexity of interacting nanostructures and post-treatment processes.
Innovation Solution
A kit and method utilizing magnetic nanoparticles with an iron oxide core and gold shell, functionalized with primers and silicon buffers, which are applied in a magnetic field to enhance detection efficiency by reducing PCR cycle numbers and improving electrochemical signal measurement, allowing for rapid and accurate detection of target nucleic acids.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional PCR technology is used to detect target nucleic acids, then detection accuracy can be maintained, but detection time and equipment cost increase significantly
Solution Approach 1:
The patent introduces magnetic nanoparticles as intermediary carriers that bind to target nucleic acids, enabling detection through magnetic field interaction rather than traditional PCR amplification. This mediator approach allows direct detection of low-concentration targets without requiring extensive cycling time, thus reducing detection time while maintaining accuracy.
Solution Approach 2:
The patent replaces the thermal cycling mechanical system of conventional PCR with a magnetic field-based detection system. By using magnetic nanoparticles that respond to magnetic fields, the system substitutes thermal expansion and contraction mechanisms with magnetic interaction, enabling faster detection without sacrificing accuracy.
2Measurement precision
If conventional PCR technology is used to detect low-concentration target nucleic acids, then detection can be performed, but the complexity of interacting nanostructures and post-treatment processes increases
Solution Approach 1:
The patent extracts and eliminates the complex post-treatment processes from conventional PCR by using magnetic nanoparticles that can directly bind to and concentrate target nucleic acids. This extraction of unnecessary steps simplifies the overall process while maintaining detection capability for low-concentration targets.
Solution Approach 2:
The magnetic nanoparticles serve multiple functions simultaneously: they act as carriers for target nucleic acids, provide magnetic field interaction for detection, and enable concentration enhancement. This multi-functionality reduces the need for separate specialized components, thereby reducing process complexity.
3Productivity
If magnetic nanoparticles are used to detect target nucleic acids, then detection time is shortened and sensitivity is improved, but nanoparticle size and shell thickness must be precisely controlled
Solution Approach 1:
The patent optimizes specific parameters of the magnetic nanoparticles, including core size (170-300 nm) and shell thickness (15-40 nm), to achieve the desired balance between detection efficiency and manufacturability. By establishing specific parameter ranges rather than requiring precise single values, the system maintains high productivity while allowing for practical manufacturing tolerances.
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 significantly shortens the detection time, increases accuracy, and enables the detection of low-concentration target nucleic acids with high sensitivity, overcoming the limitations of traditional PCR technologies by using magnetic nanoparticles to enhance the interaction with target sequences and improve signal measurement.
Implementation Method 1
a magnetic field applying part for applying a magnetic field to the reactor
Data Source
AI summary
Provided are a kit and a method for detecting target nucleic acids using magnetic nanoparticles. The kit for detecting target nucleic acids includes a reactor having an opening on one side and provided with a sample containing target nucleic acids, at least one magnetic nanoparticle part provided in the reactor, a conductive substrate provided to cover the opening of the reactor, and a magnetic field applying part for applying a magnetic field to the reactor, in which the magnetic nanoparticle part includes a magnetic nanoparticle including a core portion made of iron oxide and a shell portion made of gold and provided to surround the core portion, and a primer attached to the shell portion of the magnetic nanoparticle.