Nanoparticle DNA Aptamer Probes for SARS-CoV-2 Spike Detection
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Solution Overview
Problem
Current methods for detecting SARS-CoV-2, such as PCR testing, are complex, expensive, and require centralized laboratories, resulting in long turnaround times and logistical challenges for rapid and convenient diagnosis.
Innovation Solution
Development of nanoparticle-based probes using DNA aptamers that bind to SARS-CoV-2 spike protein, inducing a detectable signal, allowing for rapid and sensitive detection of the virus in various samples.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If PCR testing is used for SARS-CoV-2 detection, then diagnostic accuracy is improved, but turnaround time increases and operational complexity increases
Solution Approach 1:
The invention extracts the detection function from centralized laboratory PCR systems and implements it through portable nanoparticle-based probes that can be used at the point of care, thereby reducing turnaround time while maintaining diagnostic accuracy through specific aptamer-virus binding
Solution Approach 2:
The invention replaces the complex mechanical and chemical PCR amplification system with a simpler nanoparticle-based detection system that uses aptamer binding and optical signal transduction, eliminating the need for thermal cycling and complex reagents while maintaining detection sensitivity
2Measurement precision
If PCR testing is used for SARS-CoV-2 detection, then diagnostic accuracy is improved, but device complexity increases
Solution Approach 1:
The invention extracts the essential detection function from complex PCR systems and implements it through simplified nanoparticle probes that require minimal operational steps, thereby reducing device complexity while preserving diagnostic accuracy through specific molecular recognition
Solution Approach 2:
The invention uses nanoparticle copies that mimic the detection capabilities of PCR systems but with simplified architecture, where the nanoparticle-aptamer complex serves as a portable alternative to centralized laboratory equipment, reducing operational complexity
3Reliability
If centralized laboratory testing is used, then diagnostic reliability is improved, but accessibility worsens
Solution Approach 1:
The invention extracts the reliable detection function from centralized laboratories and portables it to point-of-care settings through nanoparticle-based probes, thereby improving accessibility while maintaining diagnostic reliability through specific and sensitive aptamer binding
Solution Approach 2:
The nanoparticle probes are designed to perform self-detection without requiring complex laboratory infrastructure, where the aptamers automatically bind to viral targets and generate optical signals that can be read with simple equipment, enabling accessible point-of-care testing
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 nanoparticle-based probes provide a rapid, sensitive, and cost-effective method for detecting SARS-CoV-2 spike protein, enabling point-of-care diagnostics without the need for centralized laboratories, with a limit of detection below 20 nM and high specificity for SARS-CoV-2.
Implementation Method 1
DNA aptamers which bind to SARS-CoV-2 spike protein
Implementation Method 2
binding of the DNA aptamers to SARS-CoV-2 spike protein induced separation of the DNA aptamers from the nanoparticles, producing a detectable signal
Data Source
AI summary
The present disclosure relates to compositions and methods for detecting SARS-CoV-2 spike protein and diagnosing SARS-CoV-2 infection. The present disclosure also relates to kits and devices for detecting SARS-CoV-2 spike protein and diagnosing SARS-CoV-2 infection.