Microfluidic Cartridge for Nucleic Acid Detection
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Solution Overview
Problem
Current methods for detecting communicable diseases, such as influenza, at early stages of infection are inadequate, leading to challenges in treatment and transmission reduction.
Innovation Solution
A microfluidic cartridge with an amplification chamber, detection chamber, and programmable nuclease, guide nucleic acid, and labeled detector nucleic acid, which enables efficient detection of target nucleic acids through fluidic connections and resistance channels, facilitating early disease detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional detection methods are used for communicable diseases, then detection can be performed, but early stage detection sensitivity and speed are insufficient
Solution Approach 1:
The detection system is divided into separate functional modules: a microfluidic cartridge containing sample preparation and amplification chambers, and a separate reader device for detection. This segmentation allows optimized performance in each module while enabling early detection through coordinated operation.
Solution Approach 2:
The microfluidic cartridge performs preliminary nucleic acid amplification and preparation before detection occurs in the reader. This preliminary action concentrates and prepares the target analyte in advance, significantly improving detection sensitivity for early stage infections when pathogen loads are low.
2Measurement precision
If complex detection systems are implemented to improve early disease detection, then detection accuracy improves, but device complexity and ease of operation deteriorate
Solution Approach 1:
The microfluidic cartridge is designed as a self-contained, self-service unit that performs sample processing, amplification, and preparation automatically once the sample is loaded. The integrated design with pre-loaded reagents and automated fluid handling eliminates the need for complex manual operations while maintaining high detection accuracy.
Solution Approach 2:
Multiple functions (sample lysis, nucleic acid extraction, amplification, and preparation) are merged into a single integrated microfluidic cartridge. This consolidation simplifies the overall system operation while maintaining the detection accuracy needed for early disease diagnosis.
3Speed
If rapid nucleic acid amplification is performed to enable early detection, then detection speed improves, but energy consumption increases
Solution Approach 1:
The amplification process uses isothermal conditions at lower temperatures (e.g., 37-42°C) rather than high-temperature thermal cycling. This parameter change enables rapid nucleic acid amplification while significantly reducing energy consumption, making the system suitable for point-of-care early detection applications.
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 microfluidic cartridge effectively detects and quantifies target nucleic acids, aiding in early disease intervention and reducing transmission by providing rapid and accurate diagnostic capabilities.
Implementation Method 1
a programmable nuclease, a guide nucleic acid, and a labeled detector nucleic acid, wherein the labeled detector nucleic acid is capable of being cleaved upon binding of the guide nucleic acid to a segment of a target nucleic acid
Data Source
AI summary
Described herein are devices, systems, fluidic devices, kits, and methods for detection of target nucleic acids.