Biochip Sensor Using Genetically Modified Bacteria for Real-Time Biomarker Detection
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Solution Overview
Problem
Current methods for detecting bacterial-related molecules in the human gut microbiome are invasive, insensitive, and lack real-time capabilities, making early diagnosis and monitoring of diseases challenging.
Innovation Solution
A synthetic biology-based biochip sensor using genetically modified bacteria to detect specific biomarker molecules, such as siderophores and inflammation markers, which produce a reporter signal for quantitative and real-time detection, integrated with advanced electronics and wireless communication for non-invasive monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If chromatography and mass spectrometry are used for detecting bacterial molecules, then detection accuracy is improved, but the method becomes invasive and loses real-time capability
Solution Approach 1:
The patent replaces traditional mechanical/chemical detection systems (chromatography and mass spectrometry) with a biological sensing system. Genetically modified bacteria serve as living sensors that detect target molecules through natural molecular recognition processes, eliminating the need for complex mechanical instrumentation and invasive sampling procedures.
Solution Approach 2:
The patent introduces genetically modified bacteria as intermediary agents between the target molecules and the detection system. These bacteria express specific receptors that bind to target molecules and convert this binding event into a measurable signal through reporter gene expression, serving as a biological transducer that simplifies the overall detection process.
2Measurement precision
If chromatography and mass spectrometry are used for detecting bacterial molecules, then detection accuracy is improved, but real-time detection capability is lost
Solution Approach 1:
The patent enables continuous detection by using living bacteria that can continuously sense and respond to target molecules in real-time. The bacteria remain metabolically active and can repeatedly bind target molecules and produce signals, providing ongoing monitoring capability rather than discrete, time-consuming analytical runs.
Solution Approach 2:
The patent replaces time-intensive mechanical separation and analysis systems with rapid biological recognition and signaling processes. The genetically modified bacteria provide fast, real-time responses through natural molecular binding and gene expression mechanisms, eliminating the lengthy processing times inherent in chromatography and mass spectrometry.
3Ease of operation
If genetically modified bacteria are used as sensors, then non-invasive real-time detection is achieved, but device complexity increases
Solution Approach 1:
The patent creates a universal biosensing platform where genetically modified bacteria can detect multiple different target molecules by expressing different receptor proteins. The same basic bacterial chassis and detection methodology can be adapted to various applications, reducing overall system complexity through standardization while maintaining versatility.
Solution Approach 2:
The patent uses the bacteria's natural cellular machinery as copies of detection systems. Instead of building complex artificial sensors, the invention harnesses the bacteria's existing biological processes (molecular recognition, gene expression, signal transduction) to create the sensing function, simplifying the device by leveraging natural biological systems rather than engineering complex artificial ones.
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
Enables sensitive, real-time, and non-invasive detection of bacterial biomarkers, facilitating early diagnosis and monitoring of gastrointestinal diseases and bacterial contamination in food and water, with the potential for low-cost and rapid detection.
Implementation Method 1
expression of the reporter gene is induced by the binding of the molecule to the receptor
Implementation Method 2
interaction between the expressed reporter gene and the reporter gene substrate produces an output signal
Data Source
AI summary
Provided herein are biochip, system and method for detection of a marker molecule in a sample, the biochip including one or more chambers, each chamber containing a synthetic biosensor module and a detection module, wherein the synthetic biosensor module comprises a genetically modified bacteria expressing a receptor capable of binding the marker molecule, and a reporter gene, wherein expression of the reporter gene is induced by the binding of the marker molecule to the receptor; and wherein the detection module produces an output signal indicative of presence of the marker molecule in the sample.