Hair Follicle Primordium Aggregation for Scalable Support-Free Culture
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Solution Overview
Problem
Existing methods for producing hair follicle primordium are inefficient for large-scale production, require high-density cell manipulation, and rely on heterologous organism-derived culture supports, posing challenges for clinical applications.
Innovation Solution
A method for producing hair follicle primordium by forming cell aggregates of epithelial and mesenchymal cells without a culture support, using centrifugation to create spheroids, and employing guides for contact and transplantation, allowing easy and large-scale production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If epithelial cell-derived cell aggregates and mesenchymal lineage cell-derived cell aggregates are cultured in a culture support with high density state, then hair follicle primordium can be produced, but detailed manipulation is required and large quantity production is not suitable
Solution Approach 1:
The patent combines epithelial cells and mesenchymal cells into a single mixed cell population that is centrifuged together to form cell aggregates. This merging eliminates the need for separate culture supports and detailed manipulation for each cell type, allowing simultaneous aggregation and contact between cell types in a single process step.
Solution Approach 2:
The mixed cell population performs self-organization through centrifugation, where cells automatically aggregate and sort themselves based on their properties. The system uses its own inherent characteristics to achieve the desired cell arrangement without external intervention or complex manipulation techniques.
2Quantity of substance
If high density state cell mass is obtained by centrifuging after cell culture, then cells can be inserted into culture support, but cells are placed under high density state for extended period causing reduction and variability in cell quality
Solution Approach 1:
The patent performs centrifugation and cell aggregation as a preliminary action before the cells need to be in high density state for extended periods. By forming aggregates during the centrifugation process itself, the cells achieve the necessary density and organization without requiring prolonged high-density incubation, thus maintaining cell quality.
3Ease of manufacture
If collagen gel derived from heterologous organisms is employed as culture support material, then cell culture is enabled, but reliance on heterologous materials is increased
Solution Approach 1:
The patent extracts and eliminates the need for heterologous organism-derived culture support materials. By using a physical method (centrifugation) to achieve cell aggregation and contact, the system removes the dependency on collagen gel or other heterologous materials, replacing them with a purely physical process that avoids foreign substance reliance.
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
Facilitates easy and large-scale production of hair follicle primordium with improved cell quality and reduces reliance on heterologous materials, enhancing clinical applicability.
Implementation Method 1
using centrifugation to create spheroids
Data Source
AI summary
The present invention provides a method for producing regenerated hair follicle primordium that allows production of regenerated hair follicle primordium more easily and in larger amounts compared to conventional production methods.A method for producing regenerated hair follicle primordium comprising a step of obtaining hair follicle primordium by culturing a first population of cells comprising epithelial cells and a second population of cells comprising mesenchymal cells while allowing them to be in contact is provided. The production method of the present invention is characterized in that at least either one of said first population of cells and said second population of cells has formed cell aggregates before said contact, and a culture support is not used when contacting the other population of cells with said cell aggregate.