Multi-spectral Photostimulation for Cell Membrane Potential Detection
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Solution Overview
Problem
Current methods for detecting light-controlled cell membrane potential responses are complex, inefficient, and require multiple steps to verify light regulation characteristics of channel proteins.
Innovation Solution
A system and method utilizing multi-spectral multi-parameter photostimulation to detect changes in cell membrane potential, allowing for efficient and systematic detection of light-regulable cells and their specific photostimulation parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional multi-step detection methods are used to verify light regulation characteristics of channel proteins, then detection completeness is improved, but detection efficiency and system complexity deteriorate
Solution Approach 1:
The patent combines multiple detection steps into a single integrated system that simultaneously performs spectrophotometric analysis, electrophoretic separation, and functional verification. The detection system integrates optical excitation, fluorescence emission measurement, and electrophysiological recording into one coordinated platform, eliminating the need for separate experimental procedures while maintaining comprehensive detection capability.
Solution Approach 2:
The detection system is designed to perform multiple functions simultaneously: it can identify photosensitive channel proteins, determine their spectral characteristics, measure their electrophysiological properties, and verify their light-regulation characteristics all through a single experimental setup. This multi-functional approach replaces the traditional sequential multi-step methodology.
2Measurement precision
If traditional multi-step detection methods are used to verify light regulation characteristics of channel proteins, then detection completeness is improved, but device complexity deteriorate
Solution Approach 1:
The patent combines multiple detection steps into a single integrated system that simultaneously performs spectrophotometric analysis, electrophoretic separation, and functional verification. The detection system integrates optical excitation, fluorescence emission measurement, and electrophysiological recording into one coordinated platform, eliminating the need for separate experimental procedures while maintaining comprehensive detection capability.
3Measurement precision
If high energy density photostimulation is used to induce membrane current, then detection sensitivity is improved, but cell damage increases
Solution Approach 1:
The system uses pulsed photostimulation with controlled duration and repetition rates instead of continuous high-energy irradiation. By delivering light in periodic pulses with appropriate timing, the system achieves sufficient membrane current induction while allowing cellular recovery between pulses, thereby reducing cumulative photodamage and heat accumulation.
Solution Approach 2:
The system employs multi-parameter optimization of photostimulation conditions, including wavelength, energy density, pulse width, and repetition rate. By systematically adjusting these parameters based on the specific photosensitive channel characteristics, the system achieves sensitive detection at the lowest effective energy levels, minimizing cell damage while maintaining detection capability.
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 efficient detection of light-regulable cells and their specific photostimulation parameters, preventing damage to the cells while determining the energy threshold for membrane current induction.
Implementation Method 1
When an excitable cell is stimulated by light, a membrane current can be generated through a photosensitive effect of the exciting light
Implementation Method 2
the measuring electrode is connected to a signal acquisition amplifier which is further connected to a measurement result recorder
Data Source
AI summary
An isolated cell membrane potential detection system can measure a cell membrane current change when light having different parameters such as wavelength, energy density, pulse width, and repetition rate stimulates a cell to be detected, to detect whether the biological electrical activity of the cell can be regulated by light, and to detect the specificity of the light regulation parameters of the cell. In the light regulation cell membrane potential detection system, a method of progressively adjusting and detecting with multiple optical parameters from small to large is used to measure a cell membrane current change in different periods under a certain photostimulation parameter for each group of cells, so as to quickly and efficiently detect which type of optical signal can regulate the characteristics of the cell such as the generation of a membrane current, photostimulation parameter specificity, and an energy threshold.