Flexible Tissue Culture Chip for Dynamic 3D Drug Testing
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Solution Overview
Problem
Existing cell culture methods fail to accurately replicate in vivo conditions, leading to imprecise drug testing and limited 3D culture capabilities, which negatively impact drug development precision.
Innovation Solution
A tissue culture chip with a flexible substrate, featuring culture wells and a circulating system, allows for dynamic environmental simulation by bending and fluid exchange, equipped with sensing components for real-time monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If cells are cultured in a cell culture plate using conventional methods, then the culture process is simple and easy to operate, but the cultured cells differ from in vivo cells leading to imprecise drug testing
Solution Approach 1:
The patent applies the dynamics principle by making the substrate flexible and capable of bending, allowing the culture system to dynamically change its configuration. This enables the substrate to simulate in vivo mechanical conditions (such as tissue deformation, organ movement) while maintaining cell culture functionality, thereby improving drug testing precision without requiring an entirely complex rigid system
Solution Approach 2:
The patent changes physical parameters of the culture environment by controlling the bending degree of the flexible substrate. By adjusting parameters such as curvature radius, bending amplitude, and bending frequency, the system can simulate different in vivo conditions (e.g., heart beat, muscular contraction, joint bending) to improve the relevance of drug testing results
Solution Approach 3:
The flexible substrate acts as an intermediary between the culture medium and the cells, transmitting mechanical signals from the bending action to the cells. This intermediary mechanism allows the system to indirectly influence cell behavior through mechanical stimulation, improving the accuracy of drug testing by incorporating physical environmental factors
2Adaptability or versatility
If a rigid cell culture plate is used, then the structure is stable and easy to manufacture, but it cannot simulate dynamic in vivo conditions such as heart beat or muscular contraction
Solution Approach 1:
The patent employs flexible shells and thin films by using a flexible substrate that can bend and deform. This flexible substrate serves as the foundational structure that enables dynamic simulation of in vivo conditions (heart beat, muscular contraction, joint bending) while maintaining manufacturability through the use of standard flexible material fabrication processes
Solution Approach 2:
The system transitions from a static rigid structure to a dynamic flexible structure that can change its shape and mechanical properties. The flexible substrate can be controlled to bend in specific patterns, allowing the system to adapt to different physiological conditions and simulation requirements
3Measurement precision
If conventional cell culture plates are used, then the culture medium can be easily added and removed, but real-time monitoring of drug-assay-related parameters is not enabled
Solution Approach 1:
The flexible substrate serves as an intermediary platform that integrates sensing components between the culture medium and the cells. This intermediary structure enables real-time monitoring of drug-assay-related parameters by facilitating the transmission and detection of biochemical signals from the culture environment
Solution Approach 2:
The flexible substrate performs multiple functions simultaneously: it provides structural support for cell culture, enables dynamic mechanical stimulation through bending, and serves as an integrated platform for sensing and monitoring. This multi-functionality reduces the need for separate dedicated sensing systems, managing complexity while enabling real-time parameter monitoring
Data Source
AI summary
The present invention discloses a tissue culture chip, comprising: a flexible substrate having a bottom surface and a top surface comprising: a sensing part, arranged between the bottom surface and the top surface; a culturing part, arranged on the sensing part, the culturing part comprises a first culturing chamber and a second culturing chamber; and a circulating part, arranged on the sensing part and near the culturing part, and fluid communicated with the culturing part.