Amniotic Membrane Stem Cell Isolation for Skin Repair
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for isolating and cultivating epithelial stem/progenitor cells from umbilical cord tissue are inefficient and ethically challenging, failing to provide sufficient cells for skin substitutes needed for burn treatment and other skin-related disorders, with existing sources like bone marrow mesenchymal stem cells being rare and invasive to harvest.
Innovation Solution
Isolation and cultivation of mesenchymal and epithelial stem/progenitor cells from the amniotic membrane of the umbilical cord, using a scaffold with biodegradable materials and extracellular matrix components, allowing for the production of skin equivalents that can differentiate into fibroblasts and keratinocytes for skin repair.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If bone marrow mesenchymal stem cells are used for skin substitutes, then skin repair function is provided, but harvesting is invasive and cell availability is rare
Solution Approach 1:
The invention extracts stem/progenitor cells from the amniotic membrane of the umbilical cord, which is a non-invasive source obtained during routine childbirth. This extracts the useful stem cell component without requiring invasive procedures like bone marrow aspiration, thereby resolving the contradiction between providing reliable skin repair function and ease of cell harvesting.
2Quantity of substance
If current methods are used to isolate epithelial stem cells from umbilical cord tissue, then some cells are obtained, but the isolation efficiency is insufficient for skin substitute production
Solution Approach 1:
The invention uses the amniotic membrane as an intermediary source that naturally contains both mesenchymal and epithelial stem/progenitor cells. By targeting this specific membrane structure rather than trying to isolate cells directly from umbilical cord tissue, the method achieves higher isolation efficiency and sufficient cell quantities for skin substitute production.
Solution Approach 2:
The invention segments the umbilical cord into specific components, focusing on the amniotic membrane layer where stem/progenitor cells are concentrated. This segmentation allows for targeted isolation of sufficient cell quantities without processing the entire umbilical cord structure, thereby improving productivity.
3Ease of manufacture
If stem cells are isolated from amniotic membrane using scaffold with biodegradable materials, then skin equivalents can be produced, but the process complexity increases
Solution Approach 1:
The invention employs porous biodegradable scaffolds that mimic the natural extracellular matrix environment. These porous structures allow stem/progenitor cells to attach, proliferate, and differentiate naturally, simplifying the culture process while enabling effective skin substitute production. The scaffold's porosity facilitates nutrient diffusion and cell migration without requiring complex culture systems.
Data Source
AI summary
The present invention relates to a method of promoting skin rejuvenation in a subject. The method comprises administering to the subject an effective amount of a cellular extract of epithelial or mesenchymal stem/progenitor cells isolated from the amniotic membrane of the umbilical cord, wherein the cellular extract contains growth factors and peptides and is in the form of a supernatant into which the epithelial or mesenchymal stem/progenitor cells secrete the growth factors and peptides.