Porous Membrane Single-Cell Isolation for Intercellular Interaction Analysis
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Solution Overview
Problem
Current in vitro platforms for cell-to-cell interaction primarily provide average results from multiple cells, lacking the ability to effectively screen single cells interacting with neighboring cells, which is crucial for understanding cellular dynamics and intercellular signaling mechanisms, especially in complex microenvironments like those surrounding tumor cells.
Innovation Solution
A device and method utilizing a porous membrane with controlled pore size and spacing to isolate and culture single cells, allowing for interaction analysis between a first cell and multiple second cells, using external forces like agitation and gravitational forces to isolate second cells into pores, enabling single-cell level interaction and analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional in vitro platforms are used for cell-to-cell interaction, then average results from multiple cells can be obtained, but single cell level interaction and analysis cannot be achieved
Solution Approach 1:
The device divides the culture space into multiple compartments separated by porous membranes, with each compartment capable of containing single cells or small groups of cells. This segmentation enables individual cell analysis while maintaining interaction capabilities, resolving the contradiction between measurement precision and device complexity.
Solution Approach 2:
The invention employs a nested structure where porous membranes with pores are integrated within a multi-chamber device architecture. Single cells are isolated within pores (inner level) while maintaining access to culture medium and interaction with neighboring cells through the membrane structure (outer level), achieving single-cell resolution without excessive complexity.
2Measurement precision
If single cell isolation techniques are used, then single cell level analysis can be achieved, but interaction with neighboring multiple cells is limited
Solution Approach 1:
The porous membranes provide different functional zones: the pore interior provides isolation for single-cell analysis, while the pore exterior and membrane structure enable interaction with neighboring cells. This local differentiation of functional properties allows simultaneous achievement of single-cell resolution and intercellular interaction capability.
Solution Approach 2:
The porous membrane structure serves multiple functions simultaneously: it acts as a physical barrier for cell isolation, a filter for medium exchange, and a platform for intercellular interaction. This multi-functionality enables single-cell analysis while maintaining adaptability for various interaction studies.
3Measurement precision
If previous single cell pairing methods are used, then single cell interaction can be studied, but interaction with multiple neighboring cells cannot be simulated
Solution Approach 1:
The invention transitions from two-dimensional cell pairing to three-dimensional microenvironment simulation by incorporating porous membranes with depth and multiple interaction zones. This dimensional expansion allows single cells to interact with multiple neighboring cells in different spatial configurations, simulating in-vivo conditions while maintaining single-cell analysis 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
Facilitates easy monitoring and analysis of cellular phenomena at single-cell units, allowing for both visual and gene analysis, bridging the gap between in-vitro and in-vivo cellular interactions by enabling detailed study of single-cell to bulk cell interactions.
Implementation Method 1
Isolating the second cell into single cell units in a pore existing in the porous membrane with a external force such as agitation and gravitational force
Implementation Method 2
Isolating the second cell into single cell units in a pore existing in the porous membrane with a external force such as agitation and gravitational force
Data Source
AI summary
A device for single-cell analysis according to an embodiment of the present invention comprises: a substrate; a gap between the substrate and porous membrane which is a space for culture medium; and a porous membrane formed on having a pore capable of isolating a second cell into single cell units.A method for single-cell analysis according to an embodiment of the present invention comprises: Culturing a first cell in a culture medium on a bottom side of porous membrane; Applying a sample including a second cell on a porous membrane in a culture medium; Isolating the second cell into single cell units in a pore existing in the porous membrane with a external force such as agitation and gravitational force; Generating an interaction situation between the first cells and the single cell-level second cell; Analyzing a cellular phenomena of the first cell or the second cell.