Light-Sheet Photoactivation for Whole-Volume Biological Imaging
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Solution Overview
Problem
Existing microscope systems for optically examining biological samples, such as those used in optogenetics and optopharmacology, are either imprecise in point-by-point imaging or unable to perform complete volume imaging, limiting the study of drug effects on multiple neurons or protein dynamics.
Innovation Solution
A method and device using light sheet illumination to simultaneously activate and image a target region of a light-activatable biological sample, allowing for precise and fast examination of extended sample areas or entire volumes, including the use of light-sensitive envelopes or genetically modified proteins to release molecules or activate proteins with light.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If point-by-point imaging configuration is used to implement point laser ablations, then laser protection and automatic pipetting robot compatibility are improved, but measurement precision and ability to resolve drug effects on multiple neurons deteriorate
Solution Approach 1:
The patent transitions from point-by-point imaging (0D/1D) to light sheet fluorescence microscopy (2D/3D), illuminating and imaging an entire plane or volume of the biological sample simultaneously. This dimensional change enables observation of multiple neurons and cellular structures across the entire field of view, resolving drug effects on multiple targets rather than requiring sequential point-by-point examination.
2Area of stationary object
If widefield imaging configuration is used, then field of view and sample area coverage are improved, but ability to track protein dynamics and complete volume imaging deteriorates
Solution Approach 1:
The patent employs light sheet fluorescence microscopy that provides optical sectioning capability, enabling selective imaging of specific focal planes within the sample volume. By adjusting the focal plane position, the system can track protein dynamics at different depths and reconstruct 3D structures, combining wide field of view with precise depth resolution for comprehensive volume imaging.
3Adaptability or versatility
If manual addition of chemical stimulants is used, then operational flexibility is improved, but laser protection and simultaneous imaging capability deteriorate
Solution Approach 1:
The patent replaces manual mechanical addition of chemical stimulants with automated liquid handling systems integrated into the light sheet microscope platform. This substitution eliminates the need for operators to be present during laser illumination, removing the safety conflict between manual operations and laser exposure while maintaining precise temporal control over stimulus application and simultaneous imaging.
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 precise and rapid optical examination of biological samples, facilitating the study of fast biological processes like neuronal activities without sample movement, and allowing complete volume imaging for tracking protein dynamics.
Implementation Method 1
activating a target region of the light-activatable specimen by irradiating activation light into the light-activatable specimen, the activation light being formed by a light sheet
Implementation Method 2
the activation light being formed by a light sheet configured to illuminate a plane in the light-activatable specimen
Data Source
AI summary
A method for optically examining a biological sample includes: preparing a light-activatable specimen including the biological sample; activating a target region of the light-activatable specimen by irradiating activation light into the light-activatable specimen, the activation light being formed by a light sheet that illuminates a plane in the light-activatable specimen, the plane including at least a part of the biological sample; and imaging the plane illuminated with the light sheet.