Attenuated Vibrio Quorum Sensing for Safe Classroom Visualization

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Solution Overview

Problem

Current wet-lab activities lack safe and reliable methods for students to visually study protein signaling pathways in a classroom setting, as existing bacteria require proper handling and disposal, and protein signaling pathways are complex and sensitive to various factors.

Innovation Solution

Development of recombinant Vibrio bacteria with genetic mutations that attenuate the bacteria, introduce auxotrophy, and alter quorum sensing pathways, making them dependent on specific compounds for growth and virulence, thereby enhancing safety and enabling visual demonstration of protein signaling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If wild-type bacteria are used to study protein signaling pathways, then the pathways can be studied in a living system, but the bacteria require proper handling and disposal to ensure safety

Engineering Contradiction:

Improvesafety of bacteria handlingVSAvoidhandling and disposal requirements

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent converts the harmful potential of wild-type bacteria into a benefit by creating auxotrophic mutants that require specific compounds (like glucosamine and thymidine) for growth. These compounds do not occur naturally in environmental waters, so the mutant bacteria cannot survive outside the controlled laboratory environment, eliminating the need for complex handling and disposal protocols while maintaining their utility for studying protein signaling pathways

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The patent changes the growth parameters of the bacteria by introducing auxotrophic mutations that make them dependent on specific nutrients (glucosamine, thymidine, biotin). This parameter change fundamentally alters the bacteria's survival requirements, allowing them to be safely used in classroom settings where proper handling and disposal of wild-type bacteria would be required

Inventive Principle:

Principle #35Parameter changes

2Reliability

If complex protein signaling pathways are demonstrated, then complete biological processes can be studied, but the pathways require many steps and are sensitive to various factors

Engineering Contradiction:

Improvevisual result clarityVSAvoidnumber of steps in signaling pathway

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent utilizes bioluminescence (a form of light emission) as a visual readout for quorum sensing pathway activation. When the recombinant bacteria detect autoinducer molecules, they emit visible light, providing a clear, simple visual result that indicates the pathway is active. This eliminates the need for complex multi-step assays while maintaining the ability to study complete biological processes

Inventive Principle:

Principle #32Color changes

Solution Approach 2:

The patent replaces complex mechanical or chemical assay steps with a biological sensing system that naturally produces a visible signal. The quorum sensing pathway itself serves as the detection mechanism, eliminating the need for separate detection steps, reagents, or equipment while providing a reliable visual result

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS20260035729A1Creating a vibrio-based educational toolset for protein signaling

Publication Date: 2026.02.05 BIO RAD LABORATORIES INC

AI summary

Described herein are recombinant, attenuated bacteria with an altered quorum sensing pathway. The recombinant bacteria are used for visualizing quorum sensing or immunizing marine organisms against infections by Vibrio spp.