Programmable Cell Culture Gradients With Automated Cytometry Analysis
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current cell culture experiments fail to simulate dynamic physiological environments and require labor-intensive manual adjustments for data analysis, especially in time-course and multiplexed experiments, due to subjective human bias and antibody staining variations.
Innovation Solution
A system using programmable pumps and automated flow cytometry analysis to generate and analyze temporal profiles of molecular concentrations in cell cultures, enabling high-throughput and automated data processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual gating and semi-automated analysis methods are used in flow cytometry, then flexibility in analysis can be maintained, but the analysis becomes subjective, difficult to reproduce, and labor-intensive
Solution Approach 1:
The system performs automated flow cytometry data analysis where the software independently executes gating strategies and analyzes multiple experiments without requiring manual intervention. The automated pipeline processes barcoded samples, applies consistent gating criteria across all experiments, and generates results without human bias or repetitive manual adjustments.
Solution Approach 2:
The patent replaces manual mechanical gating operations with automated computational analysis. Instead of researchers manually drawing gates on flow cytometry plots, the system uses computer algorithms to automatically identify cell populations, apply gating strategies, and analyze data across multiple experiments consistently.
2Measurement precision
If conventional flow cytometry analysis is performed on multiple experiments separately, then each experiment can be analyzed individually, but batch analysis becomes time-consuming requiring manual adjustments of gating strategies for each experiment
Solution Approach 1:
The system merges multiple flow cytometry experiments into a single automated analysis pipeline. Barcoded samples from different time points and conditions are pooled and analyzed together in one batch, allowing simultaneous processing of multiple experiments with consistent gating strategies applied across all samples without requiring separate manual analysis for each experiment.
Solution Approach 2:
The automated analysis system provides universal gating strategies that work across multiple experiments and conditions. A single gating pipeline can analyze diverse samples including different time points, treatments, and cell types without requiring experiment-specific manual adjustments, making the system adaptable to various experimental designs.
3Ease of operation
If gravity-based flow systems are used to generate concentration profiles, then the system is simple to operate, but it cannot generate a wide variety of flow rates and concentration profiles
Solution Approach 1:
The system uses programmable pumps that can dynamically adjust flow rates according to predetermined profiles. The pumps can generate linear, exponential, or arbitrary concentration profiles by varying the injection rate over time, allowing precise control of molecular delivery to cells while maintaining ease of operation through computer automation.
Solution Approach 2:
The system changes flow rate parameters programmatically to generate different concentration profiles. By adjusting pump speed, injection volume, and timing parameters, the system can produce a wide variety of concentration profiles including constant, linearly increasing, exponentially increasing, or custom profiles without changing the physical hardware.
4Manufacturing precision
If microfluidic systems are used to generate concentration profiles, then precise flow control is achieved, but microfabrication is required which increases device complexity
Solution Approach 1:
The system replaces complex microfabricated microfluidic devices with standard laboratory equipment including programmable syringe pumps, tubing, and macro-scale reservoirs. The precise flow control previously requiring microfabrication is achieved through computer-controlled pumping systems that can accurately deliver molecules to cells without needing specialized microfabricated channels or structures.
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 generation of arbitrary concentration profiles without microfabrication, supporting various assays, and automates data analysis to reduce human bias and experimental variation.
Implementation Method 1
a computer programmable pump that injects a high concentration solution of the molecule into a flask or beaker with growth media
Implementation Method 2
under constant mixing through a stir bar, a shaker, or a vortex shaker
Implementation Method 3
a second pump draws liquid from the beaker and runs it through a flow chamber that contains cells
Data Source
AI summary
Systems and methods for gradient profile generation and automated cell cytometry analysis are disclosed. The technology comprises a computer controller, one or more syringe pumps, an incubator comprised of one or more cell cultures, an autosampler connected to a peristaltic pump, and a multi-line switch valve in communication with the incubator. The multi-line switch valve is configured to add one or more of media, PBS, quenching reagent, or inactivation reagent to the one or more cell cultures. The computer controller mediates the injection of stimulus to the cell cultures via the one or more syringe pumps based on a computed temporal pump profile that determines the stimulus concentration over discrete time points.