RTK Oligomer Detection via FLImP Nanometre Spatial Separation
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Solution Overview
Problem
Current methods lack effective means to detect mutations in receptor tyrosine kinases (RTKs) and monitor RTK activation, which are crucial for understanding aberrant signaling linked to diseases like cancer, as existing techniques do not provide sufficient resolution or specificity for oligomer structures at the cell surface.
Innovation Solution
The method involves high-resolution imaging using Fluorophore Localisation Imaging with Photobleaching (FLImP) to determine the nanometre spatial separation between RTK molecules at the cell surface, allowing for the identification of RTK oligomers and mutations, thereby predicting RTK activation and aberrant signaling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If high-resolution imaging methods are used to detect RTK oligomers at the cell surface, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent uses fluorophores as intermediary markers attached to RTK molecules, enabling indirect detection of oligomer structures. The fluorophores emit light signals that can be captured by imaging devices, translating molecular-scale structures into detectable optical signals without requiring direct atomic-resolution imaging of the RTK proteins themselves.
Solution Approach 2:
The patent replaces direct mechanical or structural analysis methods with optical detection methods. By using fluorescence imaging and photobleaching techniques, the system substitutes complex mechanical probing with light-based measurement, achieving high spatial resolution through optical fields rather than physical interaction.
2Device complexity
If conventional imaging methods are used, then device complexity is reduced, but measurement precision deteriorates due to insufficient resolution for oligomer structures
Solution Approach 1:
The patent transitions from direct spatial imaging to temporal dimension utilization through photobleaching kinetics. By measuring the time-dependent decay of fluorescence signals as fluorophores are sequentially photobleached, the system extracts spatial separation information from temporal data, effectively adding a time dimension to the measurement process and achieving precision beyond direct spatial resolution limits.
Solution Approach 2:
The patent changes the measurement parameter from direct spatial coordinates to fluorescence intensity decay over time. By monitoring how fluorescence signal strength decreases during photobleaching, the system infers molecular distances through kinetic parameters rather than direct spatial measurement, transforming the problem from spatial to temporal parameter domain.
3Reliability
If RTK activation monitoring methods are implemented, then reliability of disease prognosis is improved, but difficulty of detecting and measuring increases
Solution Approach 1:
The patent extracts the detection problem from complex cellular contexts by isolating specific fluorescently-labeled RTK molecules for individual tracking. By focusing on selected molecules rather than attempting to analyze all cellular components simultaneously, the method simplifies the measurement task while maintaining biological relevance through the specific oligomerization patterns that indicate activation states.
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 approach enables precise monitoring of RTK activation and mutation detection, providing valuable biomarkers for disease prognosis and treatment selection, particularly in cancers driven by EGFR family members, by correlating oligomer structure with signaling properties and disease severity.
Implementation Method 1
Fluorophore Localisation Imaging with Photobleaching (FLImP)
Data Source
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AI summary
The present invention relates to the use of receptor tyrosine kinase (RTK) oligomers as markers of RTK activation and signalling. Methods are described based upon determining the presence of RTK oligomers and/or determining the nanometre spatial separation between RTK molecules assembled as RTK oligomers at the cell surface. Such methods are directed to the monitoring of RTK activation in cells and the detection of mutations in RTKs. Methods are also described for determining prognosis for subjects having diseases characterised by aberrant RTK activation and for selecting subjects for treatment with RTK inhibitors.