Hydrogel Culture for Neural Crest Stem Cell Isolation
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Solution Overview
Problem
Current methods for isolating and culturing neural crest stem cells from adult humans are inefficient, often requiring tissue dissociation, which can lead to low yield and contamination with heterogeneous cells, and lack specific markers for purification, making them unsuitable for therapeutic use in neurologic disorders.
Innovation Solution
A method involving culturing peripheral nerve-derived neural crest stem cells by embedding peripheral nerve fragments in hydrogel, allowing cells to migrate and proliferate, and then breaking down the hydrogel to collect and amplify the stem cells, which express specific immunological markers for identification and differentiation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If tissue dissociation is used to isolate neural crest stem cells, then cells can be separated from solid tissue, but the yield is low and heterogeneous cells are contaminated
Solution Approach 1:
The patent extracts only the necessary component (neural crest stem cells) from the peripheral nerve tissue by culturing whole tissue fragments in hydrogel, allowing cells to migrate and proliferate naturally, then breaks down the hydrogel to collect the cells. This extraction approach avoids the need for harsh tissue dissociation and immunological purification, thereby maintaining high cell yield and purity simultaneously.
2Manufacturing precision
If conventional immunological purification method is used, then specific marker-expressing cells can be isolated, but the process is complex and time-consuming
Solution Approach 1:
The patent employs a self-service mechanism where neural crest stem cells naturally express specific markers (such as Sox10, p75, S100) during culture in hydrogel, enabling their identification and isolation without complex immunological purification steps. The cells essentially mark themselves for identification, simplifying the overall process while maintaining high purity.
3Quantity of substance
If long-term cell culturing (3 months) is performed to isolate neural crest stem cells, then cells can be obtained, but dysplasia such as transformation or dedifferentiation occurs
Solution Approach 1:
The patent applies preliminary action by providing an optimized culture environment (hydrogel with specific growth factors and conditions) that promotes rapid proliferation of neural crest stem cells in a short period. This preliminary optimization of culture conditions accelerates cell expansion while maintaining cell quality, avoiding the need for prolonged culturing that would lead to dysplasia.
4Object-affected harmful factors
If peripheral nerve tissue is collected from adult humans, then neural crest stem cells can be obtained without fatal adverse effects, but the tissue is difficult to access and collect
Solution Approach 1:
The patent utilizes parameter changes by selecting peripheral nerve tissue, which is accessible through minimally invasive procedures compared to central nervous system tissues. The peripheral nerve's anatomical accessibility and the ability to perform biopsy-style collection change the parameters of tissue collection, reducing adverse effects while maintaining ease of operation.
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 method enables high-yield isolation and expansion of neural crest stem cells with excellent proliferation capacity and differentiation potential into various cell types, suitable for therapeutic applications without the need for tissue dissociation, reducing contamination and improving efficiency.
Implementation Method 1
neural crest stem cells migrate to a wide range of tissues and organs in the body
Implementation Method 2
neural crest stem cells are differentiated into neurons of peripheral nervous system, glial cells, melanocytes of the skin, endocrine cells, and various mesenchymal cells
Implementation Method 3
breaking down only the hydrogel to collect neural crest stems cell
Data Source
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AI summary
Provided are a method for culturing peripheral nerve-derived neural crest stem cells including: culturing the peripheral nerve fragments embedded into the hydrogel; and breaking down only the hydrogel to collect neural crest stem cells that have migrated and proliferated in the hydrogel from the peripheral nerve fragments; and amplified and expanded collected neural crest stem cells in monolayer culture conditions. Provided also are a method of differentiating the neural crest stem cells; and a method of manufacturing cell therapeutic agent for the treatment of a neurologic disorder, each including the neural crest stem cells. Neural crest stem cells cultured according to the method have excellent in vitro proliferation capacity, and have the multipotency of being able to be differentiated into cells that constitute the peripheral nervous system and the central nervous system. Accordingly, the neural crest stem cells are suitable for use in the production of new drugs, such as the cell therapeutic agent and the tissue-engineering therapeutic agent, and also tools for cytological, molecular biological fundamental research and the new drug development research.