Patterned Substrates for Laminated Cardiomyocyte Sheet Evaluation
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Solution Overview
Problem
The preparation of cardiomyocyte sheets for transplantation is time-consuming and costly, and the curative effect of transplantation cannot be evaluated until the actual treatment is performed.
Innovation Solution
A cell culture substrate with laminated cardiomyocyte sheets, featuring alternating strip-shaped cell adhesion and suppression regions, is used to evaluate the curative effect by laminating disease and normal cardiomyocyte sheets derived from patients and healthy individuals, respectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cardiomyocyte sheets are prepared for transplantation using autologous or allogeneic cells, then transplantation treatment can be performed, but the preparation process is time-consuming and costly
Solution Approach 1:
The invention creates a cell culture substrate with alternating arrangement portions that pre-establish specific cell adhesion and suppression regions before cardiomyocyte sheet preparation. This preliminary structural preparation enables more efficient cell organization and sheet formation, reducing the overall preparation time while maintaining transplantation reliability
Solution Approach 2:
The cell culture substrate is divided into multiple alternating arrangement portions, each containing strip-shaped cell adhesion regions and cell adhesion suppression regions. This segmentation allows for organized, modular preparation of cardiomyocyte sheets with controlled cell distribution, improving preparation efficiency without compromising treatment outcome
2Reliability
If cardiomyocyte sheets are prepared for transplantation, then treatment can be administered, but the curative effect cannot be evaluated until actual transplantation is performed
Solution Approach 1:
The invention creates a model system using a cell culture substrate with alternating arrangement portions that replicates the in vivo cardiac tissue environment. This model allows evaluation of curative effects through controlled experimentation before actual transplantation, enabling premature assessment of treatment efficacy without delaying the transplantation timeline
Solution Approach 2:
The cell culture substrate with alternating arrangement portions serves as an intermediary model between in vitro cell preparation and in vivo transplantation. It provides a controlled environment to evaluate curative effects by observing cardiomyocyte behavior and functional outcomes before actual transplantation occurs
3Manufacturing precision
If a cell culture substrate with alternating arrangement portions is used, then cell organization and sheet formation are improved, but the substrate structure becomes more complex
Solution Approach 1:
The substrate structure is segmented into repeating alternating arrangement portions, each containing standardized strip-shaped cell adhesion and suppression regions. This modular segmentation simplifies the overall design while achieving precise cell organization, as each module can be manufactured independently using the same process
Solution Approach 2:
The substrate provides different local properties in alternating regions: cell adhesion regions promote cell attachment and organization, while cell adhesion suppression regions control cell distribution and prevent unwanted adhesion. This localized functional differentiation achieves precise cell sheet formation without requiring complex overall substrate design
Data Source
Figure 1(a)~1(d)
Figure 2
Figure 3(a)~4
AI summary
An object of the present invention is to provide a cell culture substrate with laminated cardiomyocyte sheets for evaluating a curative effect by biological transplantation of a normal cardiomyocyte sheet and a method for producing the same. A further object of the present invention is to provide a method for evaluating a curative effect of a normal cardiomyocyte sheet for biological transplantation. The cell culture substrate with laminated cardiomyocyte sheets of the present invention includes two or more layers of cardiomyocyte sheets on a cell culture substrate, wherein the cell culture substrate includes an alternating arrangement portion in which a strip-shaped cell adhesion region and a strip-shaped cell adhesion suppression region are alternately arranged, the cell culture substrate with laminated cardiomyocyte sheets includes the two or more layers of cardiomyocyte sheets on at least the alternating arrangement portion of the cell culture substrate; and the cell culture substrate with laminated cardiomyocyte sheets includes, as the cardiomyocyte sheets, at least one layer of each of a disease cardiomyocyte sheet containing a differentiation-induced cardiomyocyte derived from a disease patient and a normal cardiomyocyte sheet containing a differentiation-induced cardiomyocyte derived from a healthy human.