Cell Sheet Protection Solution for Viability Preservation
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Solution Overview
Problem
Existing methods for storing and transporting cell sheets during the transition from laboratory to clinical application face challenges in maintaining cell viability, secreted factors, and the integrity of cell connections, which can affect the efficacy of stem cell therapy.
Innovation Solution
A cell sheet protection solution comprising a buffered salt solution, extracellular matrix components, reducing agents, substances required for cell metabolism, and hormones, such as PBS with gelatin and vitamin C, or HEPES buffer with vitronectin and sodium pyruvate, to maintain cell integrity and viability during storage and transportation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional storage and transportation methods are used for cell sheets, then the process is simple, but cell viability and intercellular connections deteriorate
Solution Approach 1:
The patent modifies the chemical parameters of the storage solution by incorporating specific concentrations of extracellular matrix components (such as collagen, fibronectin, laminin), reducing agents (such as vitamin C, glutathione), and metabolic substrates. These parameter changes create an optimized chemical environment that maintains cell viability and intercellular connections during storage and transportation.
Solution Approach 2:
The storage solution is formulated as a composite system containing multiple components: buffered salt solution base, extracellular matrix components, reducing agents, metabolic substrates, and growth factors. This composite approach synergistically addresses multiple requirements for cell preservation, including structural support, antioxidant protection, and metabolic maintenance.
2Stability of the object's composition
If cell sheets are stored without appropriate protection solution, then the storage process is simple, but intercellular connections and cell sheet integrity are destroyed
Solution Approach 1:
The protection solution is prepared in advance with all necessary components (extracellular matrix components, reducing agents, metabolic substrates) before cell sheet storage. This preliminary preparation ensures that the optimal chemical environment is already established, preventing degradation of intercellular connections and cell sheet integrity from the outset of storage.
Solution Approach 2:
Extracellular matrix components in the protection solution serve as intermediaries that mimic the natural environment of cells. These components mediate between the storage conditions and the cell sheet, providing structural support and maintaining adhesion properties that preserve cell sheet integrity during storage and transportation.
3Reliability
If simple storage conditions are used, then the storage process is easy, but cell secreted factors and viability cannot be guaranteed
Solution Approach 1:
The protection solution contains metabolic substrates and growth factors that enable cells to maintain their own viability and secretory function autonomously during storage. The cells utilize the provided nutrients and signaling molecules to sustain their metabolic activities and continue producing secreted factors without requiring external intervention or complex monitoring systems.
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 solution effectively maintains cell viability, secreted cytokines, and intercellular connections, preventing apoptosis and ensuring the integrity of cell sheets during storage and transportation, thereby enhancing the clinical applicability of cell therapy.
Implementation Method 1
the reducing agent includes vitamin C and glutathione
Implementation Method 2
a cell sheet protection solution comprising the following components: a buffered salt solution; an extracellular matrix component; a reducing agent; a substance required for cell metabolism
Data Source
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AI summary
The present disclosure relates to a cell sheet protection solution, such as a stem cell sheet protection solution, such as a mesenchymal stem cell sheet protection solution. The present disclosure also relates to use of the cell sheet protection solution in storage and transportation of the cell sheet.