Core-shell nanosilica fluorescent probe for microbial sorting
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Solution Overview
Problem
Conventional methods for selecting functional microorganisms capable of degrading toxic aromatic hydrocarbons are inefficient and inaccurate, particularly for slow-growing organisms, due to delays in function characterization and heterogeneity within microbial populations, and lack specificity in tracking microbial activity at the single-cell level.
Innovation Solution
A core-shell type nanosilica fluorescent probe is developed, comprising a core fluorescent dye and a shell dye, which utilizes fluorescence resonance energy transfer (FRET) to specifically track and sort microorganisms with toxic aromatic hydrocarbon degrading activity using flow cytometry, enabling rapid and accurate analysis and selection of functional microorganisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional plate isolation and screening techniques are used to select functional microorganisms, then microorganisms can be isolated and cultured, but the function characterization is delayed until after population formation, resulting in low sensitivity and time-consuming processes
Solution Approach 1:
The invention segments the microbial population into single-cell level analysis by using flow cytometry to detect and sort individual cells based on their functional activity. This allows function characterization to be performed at the single-cell level rather than waiting for population formation, thereby improving sensitivity and reducing time loss.
Solution Approach 2:
The fluorescent probe is pre-loaded into microorganisms before functional characterization. This preliminary labeling allows for immediate detection and sorting of functionally active cells without waiting for population formation, enabling rapid identification of target microorganisms with specific degradation capabilities.
2Adaptability or versatility
If conventional screening methods are used, then microorganisms growing faster in specific media can be selected, but the methods are inapplicable for analyzing and selecting microorganisms that are difficult to grow or grow slowly
Solution Approach 1:
The fluorescent probe system provides a universal detection method that can be applied to all microorganisms regardless of their growth characteristics. By using flow cytometry to detect fluorescent signals from pre-loaded probes, the method can accurately identify functional activity in both fast-growing and slow-growing or difficult-to-culture microorganisms, eliminating the limitation of conventional culture-based screening.
3Ease of operation
If generic nucleic acid probes are used for fluorescent labeling, then rapid and convenient biological analysis is achieved, but the probes cannot specifically track the functional activity of microorganisms
Solution Approach 1:
The invention uses a fluorescent probe as an intermediary substance that is specifically taken up by or associated with functionally active microorganisms. This probe acts as a mediator between the detection system and the microbial functional activity, providing both ease of detection through fluorescence and high specificity for tracking microorganisms with aromatic hydrocarbon degradation capability.
Solution Approach 2:
The fluorescent probe utilizes color changes (fluorescence emission) to indicate functional activity. When microorganisms take up or are associated with the fluorescent probe, they exhibit specific fluorescence signals that can be detected by flow cytometry, enabling rapid and specific identification of functionally active cells through optical property changes.
4Reliability
If nanoscale fluorescent probes are used for tracking microorganisms, then high locating capability is achieved and fluorescent substances do not easily leak, but the probes cannot specifically identify microorganisms with degradation function
Solution Approach 1:
The fluorescent probe system achieves local quality by specifically targeting and accumulating in microorganisms with aromatic hydrocarbon degradation function. The probe is designed to be taken up by or associated with these specific cells, providing stable fluorescent signals (reliability) while simultaneously enabling specific identification of functionally active microorganisms through the localized presence of the fluorescent marker.
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 core-shell nanosilica fluorescent probe allows for efficient, intuitive, and specific sorting of functional microorganisms, enhancing the selection process with high sensitivity and providing valuable tools for environmental pollution control and microbial resource exploration.
Implementation Method 1
which utilizes fluorescence resonance energy transfer (FRET) to specifically track and sort microorganisms with toxic aromatic hydrocarbon degrading activity
Data Source
AI summary
Disclosed are a core-shell type nanosilica fluorescent probe and a synthesis method thereof, wherein the core-shell type nanosilica fluorescent probe is a nanoparticle with a core-shell structure. Also disclosed is a method using the core-shell type nanosilica fluorescent probe for selection of functional microorganisms having toxic aromatic hydrocarbon degrading activity, wherein the method enables efficient, intuitive and rapid specificity sorting and analyzing of individual cells with high sensitively.