Study on the Umbilical Cord-Mesenchymal Stem Cell Manufacturing Using Clinical-Grade Culture Medium

Area of Science:

• Cellular and Molecular Biology
• Biotechnology
• Regenerative Medicine

Background:

• Mesenchymal stem/stromal cells (MSCs) show therapeutic potential across various diseases.
• Optimizing industrial-scale MSC manufacturing is crucial for widespread clinical application.
• Umbilical cord (UC) tissues are a common source for MSC isolation.

Purpose of the Study:

• To identify optimal conditions for industrial-scale manufacturing of UC-MSCs.
• To compare different isolation (explant vs. enzymatic) and expansion (static vs. microcarrier bioreactor) methods.
• To assess the impact of these methods on MSC characteristics and biochemical profiles.

Main Methods:

• UC-MSCs isolated using explant (Exp) or collagenase digestion (Col) methods.
• Cells cultured using a GMP-compatible serum-free medium.
• Expansion via conventional static (ST) or microcarrier-based stirred-tank bioreactor (MC) culture.
• Analysis included microarray, metabolomics, and cytokine array.

Main Results:

• No significant differences in gene expression profiles between Exp-MSCs and Col-MSCs.
• Metabolomic and cytokine secretome profiles were comparable between ST-MSCs and MC-MSCs.
• First evidence of altered hydrophobic components (fatty acids, lipids) in MC-MSCs due to shear stress adaptation.

Conclusions:

• Both isolation and expansion methods (Exp/Col, ST/MC) are feasible for UC-MSC scale-up, maintaining cell equivalence.
• Enzyme-based isolation and bioreactor expansion are more suitable for industrialized MSC production.
• Identified alterations in MSC lipid composition provide new insights into expansion method effects.