Dynamic Cell Culture System for Intestinal Microenvironment Replication
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Solution Overview
Problem
Current in vitro intestinal models fail to replicate the mechanical, structural, and microbial aspects of the human gut, limiting their ability to accurately predict drug metabolism and absorption in humans, and do not sustain living microbes for extended periods.
Innovation Solution
A cell culture system that includes a fluidic device with a flexible membrane subjected to shear stress and mechanical strain, mimicking the intestinal environment, and supports the growth of intestinal epithelial cells and microbes, allowing for the recreation of the intestinal microenvironment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional static cell culture systems are used, then device complexity is reduced, but the physiological relevance and accuracy of drug metabolism prediction deteriorate
Solution Approach 1:
The patent implements a dynamic cell culture system where the membrane can be stretched and relaxed cyclically to simulate peristalsis. This dynamic mechanical stimulation transforms the static culture environment into a physiologically relevant model that mimics intestinal movement, thereby improving physiological relevance while accepting increased device complexity
Solution Approach 2:
The patent uses pneumatic actuators to apply cyclic stress to the membrane supporting the cell culture. By controlling air pressure, the system dynamically stretches and relaxes the membrane to replicate peristaltic motion, enabling physiological relevance through mechanical actuation
2Reliability
If animal models are used for drug development, then physiological accuracy is improved, but cost, time consumption, and ethical concerns worsen
Solution Approach 1:
The patent creates an in vitro copy of the intestinal environment that replicates key physiological functions including peristalsis, microbial interactions, and drug metabolism. This synthetic model copy replaces animal models by mimicking human intestinal physiology, thereby improving prediction accuracy while reducing time consumption and ethical concerns
Solution Approach 2:
The patent changes the physical parameters of the cell culture system by applying cyclic mechanical stress that mimics peristalsis. This parameter change transforms a static culture into a dynamic system that better predicts human drug metabolism, achieving animal-model-level accuracy without the associated time and ethical costs
3Ease of operation
If existing in vitro models are used, then ease of operation is improved, but the ability to sustain living microbes for extended periods deteriorates
Solution Approach 1:
The patent applies dynamic mechanical stimulation through cyclic membrane stretching to create a more physiologically relevant environment for microbes. This dynamic peristalsis simulation improves microbe sustainability by mimicking natural intestinal conditions, while the system remains relatively easy to operate through automated pneumatic control
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
This system enables more physiologically relevant studies of drug development, metabolism, and disease modeling by accurately recapitulating the human intestinal environment, including microbial interactions, thereby potentially replacing animal testing.
Implementation Method 1
The shear stress on the fluid flowing through the fluid channel is less than 1.0 dyne/cm2
Implementation Method 2
a membrane strain mechanism coupled to the membrane support elements capable of moving the membrane support elements and causing the membrane to stretch along at least one dimension of the membrane
Data Source
AI summary
The embodiments of the invention described herein relate to systems and methods for culturing and/or maintaining intestinal cells, tissues and/or organoids in vitro. The cells, tissues and/or organoids cultured according to the methods and systems described herein can mimic or reproduce natural intestinal epithelial structures and behavior as well as support co-culture of intestinal microflora.