Microfluidic Cell Culture Channel for Low-Pressure Cardiomyocyte Loading
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Solution Overview
Problem
Drug discovery and development are hampered by high failure rates due to the reliance on non-human animal models that cannot adequately represent human biology and disease states, necessitating the use of human disease-specific tissues organized into a single integrated physiological system for effective screening.
Innovation Solution
A microfluidic device comprising a cell culture channel with media channels and a weir for low-pressure cell loading, along with sensors and electrodes, is used to culture cells such as cardiomyocytes, facilitating drug screening and patient response prediction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If non-human animal models are used for drug safety and efficacy testing, then testing can be performed, but the models cannot adequately represent human biology and disease states, leading to high failure rates
Solution Approach 1:
The patent creates microphysiological systems that copy human tissue and organ functions using human-derived cells in microfluidic devices. These systems replicate human biology and disease states more accurately than animal models, thereby improving representativeness while maintaining efficient drug screening capabilities
Solution Approach 2:
The patent introduces microfluidic tissue culture systems as an intermediary between animal models and human clinical trials. These systems serve as a more accurate predictive model that bridges the gap, reducing failures in later stages while maintaining productivity
2Ease of operation
If high pressure is used to load cells into the cell culture channel, then cell loading can be achieved, but it may damage cells and complicate the loading process
Solution Approach 1:
The patent changes the pressure parameter from high to low (25-75 Pa) for cell loading. This parameter change enables gentle cell loading that maintains cell viability while still achieving effective cell delivery into the microfluidic channel, simplifying the operation
Solution Approach 2:
The patent uses controlled fluid pressure (pneumatic/hydraulic approach) at low levels to transport cells through the media channels into the cell culture channel. This hydraulic method provides gentle, controlled cell loading that preserves cell integrity
Data Source
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AI summary
The present disclosure provides a microfluidics device for culturing cells, such as cardiomyocytes or cardiomyocyte progenitors; and methods of culturing cells using the device. The device and culturing methods find use in drug screening methods, for methods of evaluating a drug under development, and for methods of predicting patient response to a given treatment regimen, which methods are also provided.