Cellular Avidity Measurement Using Resonant Sound-Wave Perturbation
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Solution Overview
Problem
Current methods for predicting the success of T-cell therapy, such as CAR-T cell therapy, are inadequate as they rely solely on affinity measurements, which do not accurately reflect in vivo outcomes, and there is a lack of fast, specific, and accurate tools to assess cellular avidity.
Innovation Solution
A method involving the use of the z-Movi® Cell Avidity Analyzer to measure cell-cell binding strength by perturbing interactions with resonant sound waves and tracking cell movement, providing a cellular avidity score that can differentiate between different receptors and predict therapeutic efficacy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If affinity measurements are used to predict T-cell therapy success, then the assessment is simple and fast, but the prediction accuracy is insufficient
Solution Approach 1:
The patent introduces an intermediary system (the cellular avidity measurement device with surface-immobilized target cells) that mediates between the simple affinity measurement and the complex in vivo outcome. This intermediary setup allows indirect measurement of cellular avidity through controlled cell-cell interactions, providing better prediction accuracy without requiring direct observation of complex in vivo processes
Solution Approach 2:
The patent replaces traditional biochemical affinity measurement systems with a mechanical force application system. By applying controlled mechanical forces to cell-cell interactions and measuring dissociation behavior, the system captures dynamic cellular binding strength that better reflects in vivo conditions, improving prediction accuracy through physical rather than purely biochemical measurements
2Measurement precision
If cellular avidity measurements are performed with single set time, then the measurement is fast, but the differentiation capability between receptors is limited
Solution Approach 1:
The patent applies periodic action by performing cellular avidity measurements at multiple discrete time points (first time point and second time point) rather than continuous monitoring. This periodic sampling approach enables differentiation between receptors with varying kinetics while keeping the total measurement time controlled and manageable
Solution Approach 2:
The patent introduces dynamic measurement by assessing cellular avidity at multiple time points to capture temporal changes in binding strength. This dynamic approach reveals kinetic differences between receptors that static single-time-point measurements would miss, improving differentiation capability while maintaining reasonable measurement duration
3Reliability
If conventional affinity assays are used, then the assay protocol is simple, but the physiological relevance is low
Solution Approach 1:
The patent changes key assay parameters by using live effector cells and target cells with cell membranes intact, rather than purified proteins in solution. This parameter change from biochemical to cellular level measurements increases physiological relevance while managing complexity through standardized cell culture and assay protocols
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 method allows for more sensitive insights into CAR-T cell activity by measuring cellular avidity at different incubation times, enabling better drug selection and improving clinical outcomes.
Implementation Method 1
cell-cell interactions are perturbed using resonant sound waves generated by a piezoelectric element
Implementation Method 2
cell-cell interactions are perturbed using resonant sound waves
Data Source
AI summary
The current invention relates to cell-cell interaction and in particular to cellular avidity. Provided are improved means and methods to study cell-cell interaction and characterizing cellular avidity. More in particular, the methods involve studying cell-cell interactions and applying forces in order to break cell-cell bonds in a controllable fashion. Analysing such interactions and breakage of cell bonds in time allows to assess cell-cell binding dynamics.