Cell Capture Chamber with Hydrogel Mediator for Laser Dissection
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Solution Overview
Problem
Conventional cell capturing techniques, including laser capture microdissection, often cause mechanical stress to cells, leading to inaccurate data due to gene expression alterations and cell viability issues, and are labor-intensive and inefficient, with a high risk of contamination and low throughput.
Innovation Solution
A system and method that maintains cells in cell culture media during laser cutting, using a chamber with a transparent surface and a laser source to capture cells without removing the media, allowing for viable and healthy cell capture with reduced perturbation, and enabling high-throughput single-cell analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional laser capture microdissection is used to capture cells, then cell capture can be achieved, but mechanical stress is applied to cells causing gene expression alterations and cell viability issues
Solution Approach 1:
A hydrogel layer is introduced as an intermediary between the cell culture membrane and the laser cutting surface. The hydrogel absorbs the mechanical stress from laser cutting, preventing direct transmission of force to the cells. This mediator layer enables cell capture while preserving cell viability and preventing gene expression alterations.
Solution Approach 2:
The harmful mechanical stress effect is extracted and isolated from the cell capture process by placing the cells on a separate hydrogel layer that is not directly exposed to the laser. The laser cuts the hydrogel rather than directly interacting with cells, removing the harmful effect while maintaining the useful cell capture function.
2Productivity
If conventional cell capturing techniques are used, then cell capture can be performed, but the process is labor-intensive and inefficient with low throughput
Solution Approach 1:
Multiple cell capture functions are merged into a single integrated platform that combines cell culture, imaging, and laser cutting capabilities. The system allows simultaneous or sequential capture of multiple cells through automated positioning and laser cutting, dramatically increasing throughput while reducing manual labor requirements.
Solution Approach 2:
The system enables automated cell identification and positioning through integrated imaging capabilities, allowing the platform to automatically locate and capture target cells without extensive manual intervention. The hydrogel layer also self-manages cell positioning and laser interaction, reducing operational complexity.
3Productivity
If conventional cell capture methods are used, then cells can be captured, but contamination risk is high
Solution Approach 1:
The hydrogel layer serves as a protective intermediary barrier between the external laser cutting environment and the cell culture medium. This layer prevents direct contact between potential contaminants from the laser system and the cells, reducing contamination risk while enabling effective cell capture.
Solution Approach 2:
The system creates a controlled, sterile environment where the hydrogel layer acts as a physical barrier maintaining an inert protective interface between the cell culture and external elements. This controlled environment minimizes contamination risks during the cell capture process.
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 preserves cell viability and reduces contamination risks, enabling efficient and robust single-cell RNA sequencing and DNA analysis with high-quality data generation, while allowing for long-term cell culture and lineage studies.
Implementation Method 1
shining a laser beam through the transparent surface to cut out a portion of the plurality of cells
Data Source
AI summary
Systems and methods for capturing cells of interest from a larger group of cells are provided. In some embodiments, the cells are held within cell culture media inside a chamber during laser dissection.