Lateral Flow IVTT Diagnostics for Multiplexed Point-of-Care Detection
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Solution Overview
Problem
Conventional point-of-care diagnostic platforms are limited by their inability to multiplex effectively, requiring expensive equipment and complex procedures, making them unsuitable for low-cost, accessible healthcare solutions in resource-limited settings.
Innovation Solution
The MEDIFLOW platform integrates lateral flow assays with in vitro transcription and translation systems, utilizing synthetic biology detection mechanisms to produce unique single-stranded nucleic acid barcodes that generate distinct color changes upon target detection, enabling simultaneous, multiplexed detection without the need for expensive equipment or complex sample preparation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional point-of-care diagnostic platforms are used, then simple biomarkers can be detected, but multiplexing capability is limited and expensive equipment is required
Solution Approach 1:
The detection system is segmented into multiple independent detection zones on the lateral flow strip, each zone containing specific capture probes for different targets. This allows simultaneous detection of multiple analytes without requiring complex multiplexed equipment, as each zone operates independently with its own signal transduction pathway
Solution Approach 2:
A universal in vitro transcription and translation system is implemented that can process multiple different nucleic acid templates simultaneously. This multi-functional system enables diverse target detection across multiple zones using a common biochemical platform, eliminating the need for target-specific equipment while maintaining multiplexing capability
2Measurement precision
If conventional point-of-care diagnostic platforms are used, then simple biomarkers can be detected, but complex procedures are required
Solution Approach 1:
Capture probes are pre-immobilized on the lateral flow strip in specific patterns, and the in vitro transcription and translation reagents are pre-formulated in a single master mix. This preliminary preparation eliminates complex step-by-step procedures during testing, as the system is designed to work with a single sample application followed by automated capillary flow
Solution Approach 2:
The system utilizes capillary action for automatic sample and reagent flow through the lateral flow strip without requiring external pumps or complex fluid handling. The in vitro transcription and translation reactions proceed autonomously once initiated, with signal amplification occurring automatically through the biochemical reaction cascade, minimizing user intervention while maintaining detection precision
3Adaptability or versatility
If synthetic biology detection mechanisms are used, then multiplexed detection capability is achieved, but low-resource reporters are needed
Solution Approach 1:
The system changes the fundamental parameter of signal transduction by using in vitro transcription and translation to convert nucleic acid binding events into protein-based colorimetric signals. This parameter change enables the use of simple, stable, and inexpensive colorimetric reporters that can be manufactured without complex equipment, while maintaining multiplexed detection capability through spatially resolved signal patterns
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
MEDIFLOW enables scalable, cost-effective, and rapid multiplexed detection of multiple targets, enhancing healthcare diagnostics accessibility and efficacy globally by leveraging low-cost, stable, and rapid in vitro transcription and translation reactions.
Implementation Method 1
introducing an in vitro transcription and/or translation reagent to the in vitro transcription and/or translation area; and producing one or more reporters indicative of a presence of one or more targets
Implementation Method 2
introducing an in vitro transcription and/or translation reagent to the in vitro transcription and/or translation area; and producing one or more reporters indicative of a presence of one or more targets
Implementation Method 3
each region comprising at least one distinct immobilized capture strand, each of the distinct immobilized capture strands configured to bind to a predetermined tail strand
Data Source
AI summary
Disclosed herein. is a method of detecting the presence of a target, the method comprising: providing an in vitro transcription and/or translation area comprising a plurality of regions, each region comprising at least one distinct immobilized capture strand, each of the distinct immobilized capture strands configured to bind to a predetermined tail strand; introducing one or more mobile tail strands to the in vitro transcription and/or translation area, the one or more tail strands generated due to the presence of a corresponding target; introducing an in vitro transcription and/or translation reagent to the in vitro transcription and/or translation area; and producing one or more reporters indicative of a presence of one or more targets.