Guanitoxin-Producing Bacteria Detection via Biosynthetic Genes
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The detection and monitoring of guanitoxin-producing bacteria, which produce a potent organophosphate neurotoxin, are hindered by chemical instability and incompatibility with standard analytical methods, posing a threat to water ecosystems and human health due to its acute neurological toxicity.
Innovation Solution
Development of methods and compositions for detecting guanitoxin-producing bacteria through the identification of specific guanitoxin biosynthetic genes, such as GntA, GntB, GntC, GntD, GntE, GntF, GntG, GntI, GntJ, and GntT, using nucleic acids complementary to these genes, enabling detection in aqueous liquids.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If standard analytical chemistry assays are used for toxin detection, then existing detection methods can be applied, but guanitoxin remains undetectable due to chemical instability and incompatibility with standard methods
Solution Approach 1:
The patent replaces chemical detection methods with molecular biological detection. Instead of using standard analytical chemistry assays that fail to detect guanitoxin due to its chemical instability, the invention uses PCR to detect biosynthetic genes (gntA-gntT) in guanitoxin-producing cyanobacteria. This substitution of detection mechanism enables reliable detection despite the toxin's chemical properties.
Solution Approach 2:
The patent uses biosynthetic genes as an intermediary target for detection. Rather than directly detecting the unstable guanitoxin molecule, the method detects the stable genetic sequences (gntA-gntT) that encode the biosynthetic pathway. This intermediary approach allows indirect detection of guanitoxin-producing bacteria, overcoming the detection difficulty caused by the toxin's chemical instability.
2Productivity
If molecular biological detection of biosynthetic genes via PCR is used, then multiplexable and cost-effective monitoring is achieved, but guanitoxin-specific genes were previously unknown and unavailable for detection
Solution Approach 1:
The patent performs preliminary characterization and sequencing of the guanitoxin biosynthetic gene cluster (gntA-gntT) before implementing detection. By first identifying and describing these unique genes through genomic analysis of guanitoxin-producing cyanobacteria, the invention creates the foundation for subsequent PCR-based detection methods, enabling efficient monitoring without prior detection capability.
3Measurement precision
If guanitoxin is detected through its unstable chemical structure, then direct toxin detection is possible, but the toxin degrades before detection can occur
Solution Approach 1:
The patent creates a genetic copy of the guanitoxin production capability through PCR detection of biosynthetic genes. Instead of detecting the unstable toxin molecule that degrades over time, the method detects stable copies of the genetic information (gntA-gntT sequences) that encode toxin production. This copying approach maintains detection precision while overcoming the stability problem of the original toxin.
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 effective monitoring and quantification of guanitoxin-producing bacteria, providing insights into cyanobacterial toxin contamination in freshwater systems, thereby mitigating the risk of harmful algal blooms.
Implementation Method 1
one or more nucleic acid each at least partially complementary to a portion of a guanitoxin biosynthetic gene
Data Source
AI summary
Provided herein, inter alia, are compositions and methods for detecting guanitoxin producing bacteria in an aqueous liquid. The methods provided herein include detecting one or more more guanitoxin biosynthetic genes in the aqueous liquid. Compositions provided herein include one or more nucleic acids at least partially complementary to a guanitoxin biosynthetic gene.