Binding Assay Method Using Saturated Receptor Measurement
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Solution Overview
Problem
Current methods for determining binding constants between molecules, especially in whole cell analyses, require large quantities of cells, are time-consuming, and expensive, often limiting their applicability due to the need to measure across the full range of concentrations to establish both knees of the curve, which can be impractical for weak interactions or scarce materials.
Innovation Solution
An improved method that utilizes a saturated receptor measurement in an n-curve analysis, allowing the determination of binding constants without completing measurements to the lower knee of the curve, reducing the need for extensive data and resources, by using a series of solutions with varying concentrations of molecule A and B, and incorporating a non-specific binding (NSB) solution to calculate binding constants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If measurements are completed across the full range of concentrations to establish both knees of the curve, then measurement precision is improved, but loss of time and loss of substance increase significantly
Solution Approach 1:
The patent applies preliminary action by pre-determining the saturation point of the receptor through initial measurements, then using this information to truncate the subsequent measurement curve. Instead of measuring the full concentration range from both knees, the method stops measurements after detecting saturation, eliminating the need to complete measurements to the lower knee while maintaining accurate binding constant determination.
Solution Approach 2:
The patent implements partial action by performing only the necessary portion of the measurement curve required for accurate binding constant determination. By identifying that measurements beyond the saturation point provide diminishing returns, the method performs partial measurements (stopping early in the concentration range) rather than completing the full curve, thereby reducing time and material consumption while maintaining sufficient precision.
2Measurement precision
If measurements are completed across the full range of concentrations to establish both knees of the curve, then measurement precision is improved, but loss of substance increases significantly
Solution Approach 1:
The patent uses preliminary action by first identifying the saturation concentration through initial measurements, then using this information to truncate the measurement protocol. This preliminary determination allows the experiment to stop before consuming materials required for the full concentration range, significantly reducing cell and material usage while maintaining accurate binding constant determination.
Solution Approach 2:
The method applies partial action by performing only the essential measurements needed for accurate binding constant determination. By stopping measurements after detecting saturation rather than completing the full curve to both knees, the protocol consumes fewer cells and materials while maintaining sufficient measurement precision for pharmaceutical development purposes.
3Reliability
If the full measurement protocol is completed, then reliability of binding constant determination is improved, but productivity decreases due to extended time requirements
Solution Approach 1:
The patent enhances productivity through preliminary action by pre-identifying the saturation point in the binding curve. This preliminary information allows subsequent measurements to be truncated, reducing the time required for each assay while maintaining reliable binding constant determination. The method establishes a workflow where initial saturation detection enables faster, more efficient measurement protocols.
Solution Approach 2:
The method improves productivity by implementing partial measurements that stop early in the concentration range after detecting saturation. Rather than completing the full measurement protocol required for maximum reliability, the patent performs sufficient measurements to achieve reliable binding constants more quickly, thereby increasing assay throughput and productivity for pharmaceutical screening and development.
Data Source
Figure 1.1~1.2
Figure 2.1~2.2
Figure 3.1~3.2
AI summary
What has been developed is an improved method of determining the binding constants between two molecules that requires significantly fewer materials and potentially less time (in the case of a whole cell analysis less time to grow cell cultures as fewer cells are required in the same analysis) to undertake. The method involves utilizing an NSB measurement in preferably an n-curve analysis in order to determine the Kd and/or Rt without having to complete actual measurements to determine the lower knee of the curve(s) in the n-curve analysis. Preparing the experiment utilizing the additional samples allows an experiment represented in a binding curve having an upper and a lower knee to no longer be required to run through the lower knee to a point of completion.