A Simple, Rapid, and Efficient Method for Isolating Mesenchymal Stem Cells from the Entire Umbilical Cord

Area of Science:

• Stem cell biology
• Regenerative medicine
• Tissue engineering

Background:

• Mesenchymal stem cells (MSCs) are crucial for regenerative medicine.
• The umbilical cord (UC) is a rich source of MSCs.
• Standardized, high-yield MSC isolation methods are needed.

Purpose of the Study:

• To develop and present a modulated explant/enzyme method (MEEM) for maximizing MSC isolation from the entire UC.
• To establish a reproducible and cost-efficient method for large-scale MSC production.

Main Methods:

• Isolation of MSCs from all anatomical regions of the UC using the MEEM.
• Primary culture and passaging of isolated MSCs.
• Characterization of MSCs via immunophenotyping and gene expression analysis.

Main Results:

• The MEEM yielded 6-10 million MSCs in 8-10 days, and 8-10 × 10^8 cells after three passages (28-30 days).
• Isolated MSCs expressed MSC markers (CD73, CD90, CD105, CD44) and pluripotency genes (SOX2, OCT4, NANOG), but not hematopoietic (CD34, CD45) or endothelial (CD31) markers.
• MSCs demonstrated differentiation capacity into adipocytes and osteocytes.

Conclusions:

• The MEEM is a simple, reproducible, and cost-efficient method for isolating large quantities of high-quality UC-MSCs.
• This method facilitates MSC production within a month for potential cell therapy applications.
• The characterized MSCs hold significant promise for regenerative medicine therapies.