ECIS Chamber Array for Real-Time Isolation of Invasive Cancer Cells
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current cell-based assays for studying cancer cell invasion lack the ability to recover invasive cells for further analysis and assess the impact of co-cultured stromal or immune cells on invasion, limiting the time resolution and understanding of drug sensitivity in heterogeneous cancer cell populations.
Innovation Solution
A next-generation ECIS system with additional chambers allows real-time monitoring and harvesting of invasive cancer cell subpopulations, enabling co-culture with stromal or immune cells, and facilitating molecular assessment at user-defined time points.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If end-point single-measurement assays are used to study time-dependent cytotoxicity, then each time point requires a separate experiment, but this limits the time resolution and number of time points that can be measured
Solution Approach 1:
The ECIS system enables continuous real-time monitoring of cell viability and proliferation over time through automated impedance measurements. The system continuously measures impedance at multiple time points without requiring separate experiments, providing high time resolution data for kinetic analysis of drug effects on cancer cells.
Solution Approach 2:
The ECIS device serves multiple functions: it monitors cell attachment, proliferation, viability, and invasion simultaneously through impedance measurements. This multi-functionality allows a single experimental setup to replace multiple separate assays, reducing overall experimental complexity while maintaining high measurement precision across different parameters.
2Loss of information
If traditional cell-based assays are used, then invasive cells cannot be recovered for further analysis, but modifying the system to enable recovery increases device complexity
Solution Approach 1:
The ECIS device is divided into separate functional chambers: an upper chamber for cell culture and a lower chamber with electrodes for impedance measurement. This segmentation allows invasive cells to migrate through a membrane from the upper to lower chamber, where they can be recovered and analyzed separately while the main culture continues in the upper chamber.
Solution Approach 2:
A porous membrane acts as an intermediary between the upper culture chamber and lower measurement chamber. This membrane allows selective passage of invasive cells while maintaining separate compartments, enabling cell recovery without requiring direct access to the culture medium and thus adding minimal structural complexity.
3Adaptability or versatility
If co-culture with stromal or immune cells is implemented, then the impact of these cells on invasion can be assessed, but this increases the complexity of the culture system
Solution Approach 1:
The device uses separate chambers that can be independently seeded with different cell types. The upper chamber can contain cancer cells while the lower chamber contains stromal or immune cells, allowing co-culture experiments without mixing all cell types in a single compartment. This segmentation simplifies the setup compared to traditional co-culture methods while enabling assessment of cellular interactions.
4Loss of time
If real-time monitoring of cell invasion is implemented, then invasive subpopulations can be isolated at user-defined time points, but this requires advanced impedance sensing technology
Solution Approach 1:
The ECIS system uses automated feedback control through computer software that continuously monitors impedance changes and triggers alerts when invasion events are detected. The system can automatically harvest cells at user-defined time points based on real-time impedance data, providing time flexibility without requiring constant manual monitoring and thus reducing operational complexity.
Solution Approach 2:
The system replaces manual mechanical monitoring and cell harvesting with automated electronic impedance sensing and computer-controlled harvesting protocols. This substitution of mechanical operations with electronic automation reduces the complexity of manual interventions while enabling precise real-time monitoring and time-point-specific cell isolation.
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 the isolation and characterization of invasive cancer cell subpopulations, providing insights into drug sensitivity and clinical decision-making with improved time resolution and molecular analysis.
Implementation Method 1
cells are cultured on microelectrodes and cell-electrode impedance is measured and determined to monitor cellular changes
Implementation Method 2
The device detects cells and/or molecules through measurement of impedance changes resulting from the attachment or binding of cells and/or molecules to the electrode surfaces
Data Source
AI summary
Systems and methods for characterizing cancer cells are disclosed. In certain embodiments, the systems and methods involve coating a first chamber with ECM material and adding a first plurality of cells to the first chamber, adding media to a second chamber, and adding a second plurality of cells and media to a third chamber. The first, second, and third chambers are then clipped together to form a chamber array. The chamber array is mounted to an electric cell impedance sensing reader and impedance readouts of cell invasion are collected from the electric array at time intervals. Cells detected to invade into the second chamber are extracted and characterized.