Peripheral Nerve-Mimicking Microtissue for Neuroregeneration
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Solution Overview
Problem
Current treatments for nerve damage, such as spinal cord injuries, lack effective therapeutic agents to prevent and alleviate secondary damage and regenerate damaged nerves, with existing stem cell therapies facing challenges in maximizing neuroregenerative functions due to safety concerns and the need for artificial gene introduction or supportive biomaterials.
Innovation Solution
A method for manufacturing a peripheral nerve-mimicking microtissue by culturing adult peripheral nerve-derived stem cells in a suspension culture with human serum albumin, dexamethasone, and N-acetylcysteine, allowing for cell-to-cell and extracellular matrix bindings, which induces neuroregeneration by secreting neurotrophic factors without the need for artificial gene introduction or supportive biomaterials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If stem cell therapeutic agents are used to promote neuroregeneration, then neuroregenerative effects are improved, but safety issues arise due to artificial gene introduction
Solution Approach 1:
The patent extracts and eliminates the harmful element of artificial gene introduction from the stem cell therapy process. Instead of using genetic modification to enhance neurotrophic factor production, the invention uses naturally occurring adult peripheral nerve-derived stem cells that inherently secrete neurotrophic factors, thereby removing the safety risk associated with genetic manipulation while preserving the neuroregenerative effect
Solution Approach 2:
The patent enables the stem cells to self-regulate and self-differentiate into neuron cells or oligodendrocytes without artificial intervention. The adult peripheral nerve-derived stem cells naturally secrete neurotrophic factors and undergo spontaneous differentiation to promote nerve regeneration, eliminating the need for artificial gene introduction and associated safety risks
2Reliability
If supportive biomaterials are used to enhance stem cell therapy, then neuroregenerative function is improved, but device complexity increases
Solution Approach 1:
The patent removes the unnecessary supportive biomaterial components from the therapeutic system. By using adult peripheral nerve-derived stem cells that can be administered directly without requiring complex biomaterial scaffolds or support structures, the invention simplifies the overall treatment system while maintaining neuroregenerative function
Solution Approach 2:
The stem cells in the patent are designed to function autonomously without external biomaterial support. The cells naturally migrate, differentiate, and secrete neurotrophic factors at the injury site, eliminating the need for complex supportive biomaterial structures and reducing device complexity
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 peripheral nerve-mimicking microtissue enhances neuroregenerative effects by increasing the expression and secretion of neurotrophic factors, promoting neuron regeneration and myelination, while providing structural stability and safety, thus addressing the limitations of existing treatments.
Implementation Method 1
a peripheral nerve-mimicking microtissue which has cell-to-cell and cell-to-ECM bindings of 100-500 cells formed by β-catenin and integrin-β1 by culturing adult peripheral nerve-derived stem cells (PNSCs) in a suspension culture environment while peripheral nerve-specific ECM produced and secreted by PNSCs accumulates in cell matrix
Implementation Method 2
cell-to-cell and cell-to-ECM bindings of 100-500 cells formed by β-catenin and integrin-β1
Data Source
AI summary
The present invention relates to a method for manufacturing a peripheral nerve-mimicking microtissue and to uses thereof, and relates to a method for manufacturing a peripheral nerve-mimicking microtissue having a diameter of 100±20 μm composed of about 100 to 500 cells, comprising isolating an culturing peripheral nerve-derived stem cells (PNSCs), and forming a cell-to-cell and cell-to-extracellular matrix binding through suspension culture of the isolated and cultured PNSCs, wherein the microtissue produced by culturing in a suspended culture environment has structural properties in which about 100 to 500 cells are assembled through cell-to-cell binding by β-catenin, the extracellular matrix (ECM) produced and secreted by the PNSCs between cells accumulates, and binding is performed by β1-integrin between the accumulated ECM and cells, and this is similar to the peripheral nerve composition and constituent cells that are regenerated after injury. Functionally, the present invention can induce nerve tissue regeneration by secreting neurotrophic agents that act centrally on nerve regeneration in the peripheral nerve-mimicking microtissue.