ATR-FTIR Spectroscopy for Rapid Cellular Activation Detection
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Solution Overview
Problem
Current methods for detecting cellular responses to stimuli, such as ligand:receptor interactions, are complex and time-consuming, often requiring hours to weeks for detection, limiting the ability to rapidly identify immune responses or infections.
Innovation Solution
The use of Fourier Transform Infrared Spectroscopy (FTIR) with an internal reflection element (IRE) to detect changes in absorption spectra of cells exposed to potential activating agents, allowing for rapid identification of cellular interactions within minutes by comparing spectra to controls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional detection methods (neutralization assays or complex molecular methods) are used, then specific pathogen identification can be achieved, but the detection time increases to hours to weeks
Solution Approach 1:
The patent replaces complex mechanical/biological assay systems with an optical detection system (FTIR spectroscopy). Instead of using neutralization assays or molecular methods that require multiple steps and reagents, the invention uses infrared radiation to directly detect cellular responses, reducing detection time from hours to minutes while maintaining identification accuracy
Solution Approach 2:
The invention changes the detection parameter from measuring specific biochemical reactions (requiring hours) to measuring overall cellular spectral changes (detectable in minutes). By monitoring changes in absorption spectra at specific frequencies that correlate with cellular activation, the system achieves rapid pathogen identification without sacrificing precision
2Measurement precision
If conventional assays are used, then specific reagents and complex methods can identify pathogens, but the procedure complexity increases
Solution Approach 1:
The patent replaces complex mechanical procedures (multiple assay steps, reagent additions, incubations) with a simplified optical measurement process. The FTIR system directly measures cellular spectral changes without requiring complex sample preparation or multiple detection steps, reducing procedural complexity while maintaining identification accuracy
Solution Approach 2:
The invention creates a universal detection platform that can identify various pathogens and cellular responses using a single FTIR-based method. Instead of requiring different specific reagents and methods for different pathogens, the system uses broad-spectrum infrared detection to monitor cellular activation responses, simplifying the overall procedure
3Loss of time
If rapid detection is implemented, then detection time is reduced to minutes, but the ability to detect subtle cellular responses may be compromised
Solution Approach 1:
The invention changes the detection parameter from monitoring specific late-stage cellular events (requiring hours) to detecting early spectral changes in absorption frequencies that occur within minutes of cellular activation. By identifying specific frequency ranges that show consistent changes upon activation, the system achieves both speed and sensitivity
Solution Approach 2:
The patent uses spectral fingerprinting to create a characteristic pattern of cellular activation. By comparing the spectral changes against known activation patterns, the system can rapidly identify cellular responses with high sensitivity, detecting subtle changes that would otherwise require longer observation periods
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 rapid detection of cellular responses to stimuli, such as pathogens or allergens, within minutes to hours, improving the speed and sensitivity of immune response identification and infection detection.
Implementation Method 1
A beam of infrared (IR) radiation can then be directed through the IRE under conditions such that the IR radiation interacts with the homogeneous population of cells. In preferred embodiments, the IR radiation is an evanescent wave
Implementation Method 2
In preferred embodiments, the IR radiation is an evanescent wave with an average penetration depth of about 2 μm
Implementation Method 3
An absorption spectrum can then be recorded over a range of preselected frequencies at different times post exposure the cell population
Data Source
AI summary
Disclosed are methods, systems, and apparatuses for rapidly detecting a cellular interaction, such as ligand:receptor interactions. For example, the disclosed methods and systems can be used to detect a cellular interaction within 15 minutes to 75 minutes. This allows cells to be used as biosensors to detect cell activating agents in a sample.