Fluorescent Nanosensor Probe for Hydrolytic Enzyme Detection
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Solution Overview
Problem
Existing methods for detecting enzyme activity, particularly in aqueous media, face challenges due to the limited solubility of hydrophobic substrates and the reliability of indirect detection techniques, which can be costly and unreliable.
Innovation Solution
A sensor assembly probe is developed, comprising a fluorescent semi-conductive nanoparticle, a hydrophobic substrate non-covalently bonded through electrostatic interaction with a hydrophilic group, allowing for the detection of enzymatic activity by monitoring fluorescence changes when the substrate is degraded by the enzyme.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If indirect detection methods are used to detect enzyme activity, then detection can be performed, but reliability is reduced and cost increases
Solution Approach 1:
The patent extracts the detection function from indirect methods and implements it directly through fluorescent nanoparticles that inherently report enzyme activity through their optical properties, eliminating the need for complex indirect detection protocols and reagents
Solution Approach 2:
The fluorescent semi-conductive nanoparticle serves as an intermediary that directly interacts with the enzyme-substrate system, providing a reliable optical signal that mediates between the enzymatic reaction and the detection system, improving both reliability and simplifying the detection approach
2Reliability
If hydrophobic substrates are used for enzyme detection in aqueous media, then specific enzyme activity can be detected, but solubility is limited
Solution Approach 1:
The patent creates a composite structure where the hydrophobic substrate is associated with the fluorescent nanoparticle through non-covalent electrostatic interactions, allowing the hydrophobic substrate to maintain its enzymatic recognition properties while the nanoparticle provides aqueous compatibility and solubility
Solution Approach 2:
The fluorescent nanoparticle acts as an intermediary carrier that bridges the hydrophobic substrate and the aqueous environment, enabling the substrate to function in aqueous media without sacrificing its hydrophobic interaction properties with the enzyme
3Measurement precision
If fluorescent semi-conductive nanoparticles are used for direct detection, then detection sensitivity is improved, but the complexity of the sensor assembly increases
Solution Approach 1:
The patent merges multiple functions into a single integrated sensor assembly where the fluorescent nanoparticle simultaneously provides detection sensitivity, the substrate provides enzymatic recognition, and the electrostatic interaction provides stable association, eliminating the need for separate components and reducing overall complexity
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 sensor assembly provides sensitive and reliable detection of enzymatic activity, enabling high-throughput screening of hydrolytic enzymes in various environments, including soil samples, with improved stability and accuracy.
Implementation Method 1
a fluorescent semi-conductive nanoparticle
Implementation Method 2
a hydrophobic substrate for a predetermined enzyme, associated with the fluorescent semi-conductive nanoparticle by a non-covalent electrostatic interaction
Data Source
AI summary
A sensor assembly probe may include a fluorescent semi-conductive nanoparticle. A sensor assembly probe may include a hydrophobic substrate for a predetermined enzyme, associated with the fluorescent semi-conductive nanoparticle by a non-covalent electrostatic interaction. A sensor assembly probe may include a hydrophilic group bonded to the hydrophobic substrate.