Stem Cell Sheet for Uterine Scar Repair
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current stem cell transplantation methods for treating uterine scars face challenges such as high cell loss during treatment, poor localization of stem cells at the injury site, and adverse inflammatory reactions due to residual biomaterials.
Innovation Solution
The use of scaffold-free human mesenchymal stem cell sheets, cultured using temperature-sensitive intelligent dishes, which preserve the extracellular matrix and allow for site-directed transplantation, enhancing cell attachment and cytokine secretion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If stem cell suspension injection is used for endometrial scar repair, then the treatment can be administered, but a large number of stem cells are lost during the process and cannot be concentrated at the target site, resulting in poor therapeutic effect
Solution Approach 1:
The patent uses a temperature-responsive culture dish bottom that forms a flexible cell sheet structure. The temperature-responsive polymer coating on the dish bottom allows cells to form a cohesive sheet that can be easily transferred and applied to the target site, preventing cell loss during transplantation while maintaining cell viability and function.
Solution Approach 2:
The patent combines multiple functions into the cell sheet structure: the extracellular matrix provides structural support, the temperature-responsive coating enables controlled release, and the cells maintain their physiological functions. This integrated approach ensures high cell colonization efficiency at the target site while eliminating the need for separate scaffolds or carriers.
2Reliability
If absorbable biomaterials are used as scaffolds for stem cell transplantation, then cell colonization is improved, but residual biological scaffold induces local inflammatory reaction and affects therapeutic effects
Solution Approach 1:
The patent extracts and eliminates the scaffold component from the transplantation system. By using a scaffold-free approach with temperature-responsive culture dishes, the invention removes the source of residual biomaterial-induced inflammation while maintaining effective cell colonization through the temperature-controlled cell sheet release mechanism.
Solution Approach 2:
The temperature-responsive culture dish bottom acts as a disposable tool that facilitates cell sheet formation and release. The dish is used once to create the cell sheet, which is then transferred to the target site, leaving no residual scaffold material that could cause inflammation.
3Productivity
If conventional stem cell transplantation methods are used, then treatment can be provided, but stem cells cannot be concentrated and collected at the focus, resulting in low cell utilization rate
Solution Approach 1:
The patent performs preliminary action by culturing cells on the temperature-responsive dish bottom to form a pre-formed cell sheet before transplantation. This pre-organization of cells into a sheet structure ensures that when the sheet is released and applied to the target site, the cells are already concentrated and positioned for optimal colonization and utilization.
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 approach significantly increases myometrial thickness and reduces scar formation by promoting localized repair and angiogenesis, while minimizing cell loss and inflammatory reactions.
Implementation Method 1
temperature-sensitive intelligent culture dish
Data Source
AI summary
A use of a human mesenchymal stem cell sheet in the preparation of a drug for treating uterine scars, and a use of a human mesenchymal stem cell sheet in the preparation of a composition for treating a uterine scar in a subject. The human mesenchymal stem cell sheet is locally applied to the uterus of the subject. The human mesenchymal stem cell sheet can realize site-directed transplantation of mesenchymal stem cells, and no loss would occur because the cells are constrained by extracellular matrixes, such that the cells can directionally release cytokines at a scar site to exert functions.