Temperature-Responsive Cell Sheet for Hyaluronic Acid Production
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current regenerative medicine techniques face challenges in efficiently producing and utilizing hyaluronic acid, a crucial biological substance for tissue repair, due to limitations in cell culture methods and analysis of glycosaminoglycans, particularly in generating cell sheets that can effectively produce and maintain hyaluronic acid production.
Innovation Solution
A novel cell sheet production method utilizing temperature-responsive polymer-coated substrates, where cells are cultured under specific temperature conditions to enhance hyaluronic acid production, allowing for high-efficiency detachment and transplantation of cell sheets rich in hyaluronic acid, maintaining cellular structure and function.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional cell culture methods are used, then cells can be cultured, but hyaluronic acid production ability is not maintained or enhanced
Solution Approach 1:
The patent applies parameter changes by controlling temperature conditions during cell culture to enhance hyaluronic acid production. Specifically, cells are cultured at 37°C to maintain normal growth, then temperature is shifted to lower temperatures (4-25°C) to induce hyaluronic acid production while maintaining cell viability. This temperature parameter change enables simultaneous achievement of cell culture and enhanced hyaluronic acid production.
Solution Approach 2:
The patent employs dynamic temperature control during the cell culture process. The culture temperature is dynamically adjusted between growth phase (37°C) and production phase (4-25°C), allowing the system to optimize for different objectives at different stages. This dynamic approach enables the cell culture system to transition from prioritizing cell proliferation to prioritizing hyaluronic acid production.
2Ease of operation
If temperature-responsive polymer coating is used for cell detachment, then cells can be detached without enzymatic treatment, but control of hyaluronic acid production is compromised
Solution Approach 1:
The patent merges two previously separate processes into one unified method: temperature-responsive cell detachment and hyaluronic acid production enhancement. By using the same temperature shift (to 4-25°C) that induces polymer contraction for detachment, the patent simultaneously enhances hyaluronic acid production. This merging eliminates the need for separate enzymatic treatment steps while maintaining high hyaluronic acid production.
Solution Approach 2:
The temperature shift serves multiple functions simultaneously: it triggers polymer contraction for cell detachment and induces hyaluronic acid production in cells. The same temperature change that achieves detachment also enhances the desired product formation, making the process self-reinforcing and eliminating the need for additional reagents or treatment steps.
3Measurement precision
If conventional chromatography methods are used for glycosaminoglycan analysis, then separation can be achieved, but analysis procedures become complicated
Solution Approach 1:
The patent employs a single chromatography column capable of analyzing both hydrophobic and hydrophilic glycosaminoglycans simultaneously. This universal column replaces the conventional need for separate reverse phase and normal phase columns, allowing comprehensive glycosaminoglycan analysis in one procedure while maintaining separation precision for different molecular types.
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
The method enables high-yield production of hyaluronic acid, promoting tissue reinforcement, cell adhesion, and tissue thickening, offering a more effective regenerative medicine approach by maintaining cellular integrity and function post-transplantation.
Implementation Method 1
a cell culture support having a surface coated with a polymer which changes a hydration ability in a temperature range of 0-80°C
Data Source
Figure 1~2
Figure 3~4
AI summary
A cell sheet having a high hyaluronic acid production ability can be typically prepared by a method in which, on a cell culture support having a surface coated with a polymer which changes a hydration ability in a temperature range of 0-80°C, cells with increased stem cell content are cultured in a temperature range where the polymer exhibits a weak hydration ability, and then the temperature of a culture solution is changed to a temperature at which the polymer exhibits a strong hydration ability, so that the cultured cells are detached in the form of sheet.