Mesenchymal Stem Cell Adjuvant for Rapid Proliferation
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Solution Overview
Problem
Current methods for culturing human mesenchymal stem cells face challenges in rapid proliferation and maintaining undifferentiated status, with existing techniques requiring multiple passages and exposure to contamination risks, and often result in low quantities of secreted growth factors.
Innovation Solution
An adjuvant containing a combination of a long-acting ascorbic acid derivative (L-ascorbic acid-2-phosphate) and N-acetyl-L-cysteine, along with basic fibroblast growth factor (FGF-2), is added to the culture medium to enhance cell cycle progression and inhibit cyclin-dependent kinase inhibitors, promoting rapid proliferation and maintaining the undifferentiated state of mesenchymal stem cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional culture methods are used to proliferate human mesenchymal stem cells, then cells can be cultured, but proliferation rate is slow and multiple passages are required
Solution Approach 1:
The patent changes the chemical composition parameters of the culture medium by adding specific adjuvants (ascorbic acid-2-phosphate, N-acetyl-L-cysteine, and basic fibroblast growth factor) to optimize cell proliferation conditions. This resolves the contradiction by modifying medium composition to achieve faster proliferation without extending culture time
Solution Approach 2:
The patent applies preliminary action by pre-treating cells with the optimized adjuvant-containing medium before reaching confluence, which primes the cells for rapid division. This approach accelerates the proliferation process and reduces the time required to achieve sufficient cell numbers
2Quantity of substance
If multiple passages are performed to obtain sufficient cell quantities, then cell numbers increase, but contamination risk increases
Solution Approach 1:
By changing the culture medium parameters to include optimized adjuvants, the patent achieves rapid cell multiplication in fewer passages. This reduces the number of times cells are subcultured, thereby minimizing exposure to contamination risks while still achieving sufficient cell quantities
3Stability of the object's composition
If conventional culture methods are used, then cells can be maintained, but undifferentiated status is lost and cell aging occurs
Solution Approach 1:
The patent modifies culture medium parameters by incorporating specific adjuvants that create an optimized microenvironment. This environment maintains telomere length and prevents cell aging, allowing cells to remain in an undifferentiated, youthful state for extended periods without losing their stem cell properties
Solution Approach 2:
The patent employs feedback mechanisms where the adjuvant-containing medium continuously monitors and responds to cell state changes. The medium composition is designed to detect early signs of differentiation or aging and counteract them, maintaining stable undifferentiated status throughout the culture period
4Quantity of substance
If conventional culture methods are used to obtain growth factors, then some growth factors are secreted, but quantities are low
Solution Approach 1:
The patent changes the culture conditions by adding specific adjuvants that stimulate cell metabolism and secretory activity. This increases the productivity of growth factor secretion per unit time and per cell, achieving high quantities of growth factors without requiring excessive cell numbers or culture time
Data Source
AI summary
An adjuvant for rapid proliferation of human mesenchymal stem cells in vitro is provided to overcome the problem of low cell amplification efficiency of human mesenchymal stem cells in a culture process. The adjuvant added for the culture of human mesenchymal stem cells includes at least one antioxidant, and a basic fibroblast growth factor (FGF-2). The adjuvant is added into a medium containing the human mesenchymal stem cells, and the culture takes place in a normal oxygen environment (21% oxygen tension), and the cells are divided rapidly, and the cell cycle at synthesis phase (S phase) percentage is increased to reduce ageing and improve differentiation potential. The adjuvant not only amplifies human mesenchymal stem cells rapidly to harvest the growth factor, but also maintains the characteristics of the multifunction of stem cells for the purposes of culturing and amplifying the human mesenchymal stem cells.