Bacterial Biosensor for Estrogenic Compound Detection
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Solution Overview
Problem
Current methods for detecting estrogenic compounds are costly, time-consuming, and labor-intensive, and existing yeast-based systems suffer from instability and long detection times.
Innovation Solution
A genetically-modified bacterial strain is developed, transformed with plasmids containing genes encoding estrogen receptor proteins and coregulatory factors, which interact to express a reporter gene when estrogenic compounds are present, allowing for rapid and cost-effective detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If yeast-based hybridization systems are used to detect estrogenic compounds, then detection capability is achieved, but detection time is prolonged and stability is reduced
Solution Approach 1:
The invention changes the biological system parameter from yeast-based to bacterial-based detection system. Specifically, it uses Escherichia coli bacteria transformed with plasmids containing estrogen receptor genes and reporter genes, replacing the yeast-based hybridization system. This parameter change results in faster detection time while maintaining detection capability for estrogenic compounds.
2Measurement precision
If analytical methods such as HPLC and LC/MS are used to detect estrogenic compounds, then detection precision is improved, but equipment cost and production cost increase
Solution Approach 1:
The invention replaces expensive analytical equipment (HPLC, LC/MS) with a cost-effective bacterial biosensor system. The biosensor uses inexpensive bacterial cultures and simple detection reagents instead of costly analytical instruments, achieving acceptable detection precision at significantly lower equipment and operational costs.
Solution Approach 2:
The invention substitutes complex mechanical and electronic analytical systems (HPLC pumps, mass spectrometers) with a biological system (bacterial biosensor). The detection is achieved through biological interactions between estrogenic compounds, estrogen receptors, and reporter genes, eliminating the need for expensive analytical equipment while maintaining detection capability.
3Measurement precision
If conventional analytical methods are used to detect estrogenic compounds, then detection accuracy is maintained, but labor requirements and process complexity increase
Solution Approach 1:
The bacterial biosensor system performs self-detection without requiring complex manual operations. The bacteria automatically detect estrogenic compounds through their estrogen receptor proteins and produce measurable signals (such as fluorescence or color changes) autonomously, eliminating the need for extensive manual sample preparation, analysis, and interpretation that characterizes conventional analytical methods.
4Measurement precision
If yeast-based systems are used for estrogenic compound detection, then detection function is provided, but system stability deteriorates
Solution Approach 1:
The invention changes the biological host parameter from yeast to bacteria (Escherichia coli), which provides superior system stability. The bacterial system maintains consistent detection performance across multiple experiments and conditions, whereas yeast-based systems exhibit variability and instability. This parameter change resolves the contradiction between maintaining detection function and improving system reliability.
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 bacterial strain enables rapid, low-cost, and labor-efficient detection of estrogenic compounds, overcoming the limitations of traditional methods by using a simple process and providing high sensitivity to various estrogenic substances.
Implementation Method 1
genes encoding estrogen receptor proteins and coregulatory factors, which interact to express a reporter gene when estrogenic compounds are present
Data Source
AI summary
The present invention relates to a genetically mutated bacteria strain for detecting an estrogenic compound and a method for detecting an estrogenic compound by using the same. More specifically, the present invention relates to a bacteria strain having an ability to detect an estrogenic compound, transformed by plasmid A comprising base sequences in which a gene for encoding a coactivator interacting with an estrogen receptor ligand binding domain (ER LBD) is conjugated to a gene for encoding λCI protein, and plasmid B in which a gene for encoding an estrogen receptor ligand binding domain (ER LBD) is conjugated to a gene for encoding αNTD protein, and a method for detecting an estrogenic compound by using same.The present invention can provide genetically mutated bacteria for detecting an estrogenic compound and a method for detecting an estrogenic compound by using same since the bacteria are based on estrogen receptor protein originated from the human body, and thus are environmentally friendly, and the detection of the bacteria can be performed in a very short time with low cost and labor by virtue of a relatively simple process.