Patch-Clamp Barrier Tissue Sensing for Real-Time Transport Detection
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Solution Overview
Problem
Current methods for assessing agent transport across barrier tissues, such as the blood-brain barrier, lack real-time, high-resolution detection capabilities, relying on snapshot measurements and animal models that provide limited spatiotemporal information and quantification.
Innovation Solution
Culturing endothelial cells over pore structures to form gigaohm sealed patches, enabling real-time electrical sensing of transport through label-free detection of capacitance changes using patch-clamp techniques, with arrays of individually addressable electrodes for enhanced spatiotemporal resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If snapshot measurements using optical imaging, radiological labels, or mass spectrometry are used to assess agent transport, then measurement capability is provided, but real-time detection and high spatiotemporal resolution are lost
Solution Approach 1:
The patent replaces optical imaging, radiological labeling, and mass spectrometry systems with an electrical measurement system based on patch-clamp techniques. This substitution enables real-time detection of agent transport across barrier tissues by measuring electrical signals (capacitance changes) with high spatiotemporal resolution, eliminating the time loss inherent in snapshot measurements while maintaining measurement precision
Solution Approach 2:
The invention changes the measurement parameter from optical signals, radiological labels, or mass spectrometry data to electrical parameters (capacitance, current, voltage). By monitoring electrical signals in real-time during agent transport, the system achieves continuous spatiotemporal resolution without the time loss associated with discrete snapshot measurements
2Measurement precision
If patch-clamp techniques with gigaohm sealed patches are used for real-time electrical sensing, then real-time detection and sensitivity are improved, but device complexity and setup difficulty increase
Solution Approach 1:
The patent employs barrier tissues (such as endothelial cell monolayers) that spontaneously form gigaohm sealed patches when cultured on appropriate substrates. This self-organizing property of the biological tissue eliminates the need for complex manual patch-clamp setup procedures, reducing device complexity and operational difficulty while maintaining high detection sensitivity for real-time agent transport monitoring
3Measurement precision
If arrays of individually addressable electrodes are used for enhanced spatiotemporal resolution, then measurement precision and spatial resolution are improved, but device complexity and cost increase
Solution Approach 1:
The patent divides the sensing system into multiple individually addressable electrode sites arranged in arrays. Each electrode can independently monitor agent transport at its specific location, providing enhanced spatial resolution. The segmented architecture allows parallel measurements across multiple sites, improving overall spatiotemporal resolution while managing system complexity through modular design
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 real-time, label-free detection of agent transport across barrier tissues with improved sensitivity and resolution, allowing for accurate quantification of active transport mechanisms.
Implementation Method 1
electrical sensing can include highly sensitive detection of changes in capacitance that occur when a lipid vesicle fuses with a patched membrane surface
Implementation Method 2
culturing endothelial cells over pore structures, thereby encouraging the formation of gigaohm sealed patches over the pore
Data Source
AI summary
The present disclosure relates to methods, apparatuses, and systems to measure one or more electrical signals from a cultured cell layer. In some embodiments, such electrical signals can be indicative of transport or lack of transport of an agent through the cell layer.