Flow Induced Dispersion Analysis for Rapid Analyte Quantification
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Solution Overview
Problem
Current methods for characterizing non-covalent interactions and quantifying analytes are slow, require large sample volumes, and are technologically complex, making it difficult to address the need for rapid and comprehensive analysis in drug development and biochemical processes.
Innovation Solution
The use of Flow Induced Dispersion Analysis (FIDA) for quantifying analytes, which involves pressure-driven flows in thin capillary tubes with a detector, allowing for fast, low-cost, and simple measurement of non-covalent equilibrium binding constants and analyte concentrations by analyzing the apparent diffusivity of ligands in the presence and absence of interacting analytes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If standard procedures for addressing non-covalent interactions are used, then comprehensive characterization can be achieved, but analysis time is excessive (hours) and sample volume requirements are high
Solution Approach 1:
The invention extracts only the essential measurement information (dispersion characteristics) from the complex biochemical system, eliminating unnecessary separation and detection steps. By measuring dispersion directly in the flow stream without isolating individual components, the method achieves comprehensive characterization in seconds rather than hours.
Solution Approach 2:
The invention replaces complex mechanical separation systems (chromatography columns, centrifugation equipment) with a flow-based dispersion measurement system. The mechanical complexity of standard procedures is substituted by measuring the natural dispersion behavior of molecules in laminar flow, dramatically reducing analysis time while maintaining characterization quality.
2Measurement precision
If standard procedures for addressing non-covalent interactions are used, then comprehensive characterization can be achieved, but sample volume requirements are high
Solution Approach 1:
The invention extracts and measures only the dispersion signal from the flowing sample, eliminating the need for large volumes required by conventional methods for signal accumulation. The continuous flow system allows comprehensive characterization using nanoliter-scale samples by continuously measuring dispersion properties as molecules pass through the detection zone.
3Measurement precision
If standard procedures for addressing non-covalent interactions are integrated with binding target isolation and synthesis, then comprehensive analysis can be achieved, but technological complexity increases
Solution Approach 1:
The invention creates a universal flow-based platform that can address non-covalent interactions, binding target isolation, and synthesis monitoring using the same basic measurement principle. The system measures dispersion characteristics across different biochemical processes without requiring separate specialized equipment for each application, reducing overall technological complexity.
4Measurement precision
If existing quantification methods are used, then analyte concentrations can be determined, but analysis speed is slow and implementation is complex
Solution Approach 1:
The invention implements continuous measurement of dispersion characteristics as samples flow through the system, eliminating the stop-start nature of conventional quantification methods. The continuous flow allows real-time monitoring and rapid data acquisition, achieving high analysis speed while maintaining quantification accuracy through uninterrupted measurement of analyte-ligand interactions.
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
FIDA enables rapid, cost-effective, and straightforward quantification of analytes, suitable for point-of-care diagnostics and laboratory analysis, with the ability to analyze multiple analytes in a single system, offering improved analysis speed, simplicity, and reduced sample volume requirements.
Implementation Method 1
Non-covalent interactions play a key role in many biochemical processes related to for example drug targets or protein-protein interactions
Implementation Method 2
pressure driven flows of single substances FIDA is similar to Taylor Dispersions observed previously for pressure driven flows in tubes or thin capillaries
Implementation Method 3
peak dispersion may be used to asses the diffusivity of small molecules, macromolecules and particles
Implementation Method 4
By measuring the diffusivity of an indicator molecule (the affinity probe or ligand) in the presence and absence of an interacting analyte it is thus possible to obtain information of the concentration of the interacting analyte
Data Source
AI summary
A method for quantitative characterization of non-covalent interactions and analyte quantification in nanoliter samples is described. The procedure is based on Flow Induced Dispersion Analysis (FIDA), of which the only system requirements is a narrow tube, capillary or channel equipped with a detector. The technique can be implemented using standard equipment such as High Performance Liquid Chromatography (HPLC), Flow Injection Analysis (FIA) or Capillary Electrophoresis (CE).