Simplified Fluorometric Method for Cellular Toxicity Screening
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Solution Overview
Problem
Current fluorometric methods for detecting cellular toxicity are expensive, cumbersome, and not well-suited for high-throughput applications, requiring continuous illumination of fluorescent compounds and involving complex equipment, which limits their effectiveness in screening for compounds with therapeutic potential and quality control.
Innovation Solution
A simplified fluorometric process that characterizes cellular toxicity by measuring the fluorescence kinetics of biological samples treated with fluorescent compounds without continuous illumination, using short excitation durations and allowing for the addition of accelerator compounds to expedite the process, enabling the differentiation of two cellular states based on nucleic acid alterations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If continuous illumination of fluorescent compound is used, then fluorescence detection is achieved, but equipment complexity and cost increase
Solution Approach 1:
The patent applies periodic action by using intermittent or pulsed illumination instead of continuous illumination. The fluorescent compound is excited at specific time points (e.g., at intervals or in pulses), which reduces the complexity and cost of illumination equipment while still achieving sufficient fluorescence signal for detection. This periodic excitation approach maintains measurement precision while simplifying the device requirements.
2Measurement precision
If complex fluorometric methods are used, then cellular toxicity detection is achieved, but ease of operation and high-throughput compatibility decrease
Solution Approach 1:
The patent applies parameter changes by optimizing key parameters such as using specific fluorescent compounds with appropriate excitation/emission wavelengths, adjusting illumination intensity and duration, and modifying incubation conditions. These parameter optimizations enable simplified detection protocols that maintain high measurement precision for cellular toxicity while improving ease of operation and compatibility with high-throughput screening formats.
3Measurement precision
If traditional fluorometric assays are used, then cellular toxicity measurement is achieved, but productivity for high-throughput screening decreases
Solution Approach 1:
The patent applies segmentation by dividing the detection process into discrete, standardized steps that can be efficiently performed in multi-well plate formats. The method segments the assay into: (1) sample preparation, (2) fluorescent compound addition, (3) brief incubation, (4) intermittent illumination and detection. This segmented approach maintains measurement precision while enabling parallel processing of numerous samples, thereby increasing productivity for high-throughput screening applications.
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
This method provides a cost-effective, reproducible, and high-throughput compatible approach to detect genotoxic, cytotoxic, and apoptotic effects, allowing for the identification of compounds modulating these effects without the need for continuous illumination, thus overcoming the limitations of existing technologies.
Implementation Method 1
measuring the fluorescence kinetics of biological samples treated with fluorescent compounds without continuous illumination
Data Source
Figure 1A~1B
Figure 1C~1D
Figure 2A~2B
AI summary
The present invention concerns a method for testing the influence of a compound on a biological sample either by measuring, at two separate times t1 and t2, the fluorescence of a fluorescent compound brought into contact with said sample previously subjected to said condition, or by comparing, at a given time T, the fluorescence of a fluorescent compound brought into contact with a sample previously subjected to said condition with the fluorescence of the same fluorescent compound brought into contact with an identical sample not subjected to said condition.