Microfluidic Device for Multicellular and Single-Cell Metabolic Profiling
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Solution Overview
Problem
Current methods for studying cellular metabolism are limited by their inability to provide high spatial and temporal resolution, especially in situ, and cannot distinguish between individual cell contributions within multicellular structures, leading to incomplete understanding of cellular heterogeneity and its impact on health and disease.
Innovation Solution
An integrated microfluidic device for multi-parameter metabolic and phenotypic profiling of live biological cells, allowing analysis in multicellular clusters, dissociated cell cultures, and isolated single cells, using extracellular sensors for non-invasive, spatial, and temporal measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If population-averaged cellular assays are used, then large numbers of cells can be analyzed efficiently, but individual cell heterogeneity and rare cell populations cannot be detected
Solution Approach 1:
The device segments the cell analysis process into distinct functional zones: a first chamber for multicellular cluster analysis and a second chamber for single-cell analysis. This segmentation allows simultaneous population-averaged and single-cell measurements without cross-interference, resolving the contradiction between throughput and single-cell resolution by providing dedicated pathways for each measurement type.
Solution Approach 2:
The microfluidic device integrates multiple functions into a single platform: it can analyze intact multicellular clusters, dissociate cells, trap individual cells, and perform both metabolic flux and phenotypic profiling. This multi-functionality enables the system to maintain high throughput while achieving single-cell resolution across different analysis modes.
2Measurement precision
If cells are dissociated into isolated cultures, then single-cell analysis becomes possible, but microenvironmental interactions and multicellular context are lost
Solution Approach 1:
The device dynamically adapts its configuration through controlled cell dissociation and chamber transitions. Cells can be analyzed in their native multicellular context in the first chamber, then dissociated and transferred to the second chamber for single-cell analysis. This dynamic reconfiguration allows the system to preserve microenvironmental context when needed while enabling single-cell resolution when required.
Solution Approach 2:
The design nests single-cell analysis capabilities within a broader multicellular analysis framework. The second chamber for single-cell analysis is functionally nested within the overall device that first processes multicellular clusters, allowing hierarchical analysis from tissue level down to individual cells while maintaining the ability to correlate findings across scales.
3Measurement precision
If intracellular probes are introduced for live cell imaging, then real-time cellular processes can be monitored, but cellular function is perturbed
Solution Approach 1:
The device uses extracellular sensors as intermediaries to measure cellular metabolism without intracellular intervention. Sensors detect metabolic fluxes (oxygen consumption, carbon dioxide production, pH changes) in the extracellular medium surrounding cells, providing real-time monitoring of cellular processes while completely avoiding cellular perturbation that would result from intracellular probe introduction.
Solution Approach 2:
The system replaces mechanical/intracellular measurement approaches with extracellular sensing. Instead of physically introducing probes into cells, the device uses biochemical sensing in the extracellular environment to infer intracellular metabolic states, substituting a non-invasive measurement paradigm for the invasive intracellular probing approach.
4Measurement precision
If traditional microscopy is used for single-cell imaging, then spatial resolution is achieved, but temporal dynamics and metabolic fluxes cannot be measured
Solution Approach 1:
The device merges microscopy-based phenotypic profiling with microfluidic metabolic flux measurement in an integrated platform. The microfluidic chamber allows simultaneous optical imaging of single cells and measurement of their metabolic fluxes through extracellular sensors, combining spatial resolution from microscopy with metabolic quantification from fluidic sampling and analysis.
Data Source
AI summary
A device for high-throughput multi-parameter functional profiling of the same cells in multicellular settings and in isolation is provided. In certain aspects, an integrated microfluidic device for multi-parameter metabolic and other phenotypic profiling of live biological cells is useable with: 1) multicellular clusters or small biopsy tissue samples, 2) cultures of the constituent cells obtained after cluster/tissue dissociation, and 3) the same constituent single cells in isolation. The approach enables study of the effects of multicellular complexity, such as in response to treatment, pathogens, stress, or other factors concerning disease origination and progression. Measurements may be performed on single cells or multicellular populations or tissues in the same assay at the same time.