Villous Chorion: A Potential Source for Pluripotent-like Stromal Cells

Area of Science:

• Stem cell biology
• Regenerative medicine
• Tissue engineering

Background:

• Multipotent stromal cells (MSCs) are crucial for regenerative medicine.
• Fetal sources are explored for MSC isolation and characterization.
• Understanding MSC differentiation potential is key for therapeutic applications.

Purpose of the Study:

• To isolate and expand mesenchymal stem or stromal cells (MSCs) from the villous chorion (VC).
• To compare the potency of VC-MSCs with other fetal-derived MSCs.
• To assess the differentiation capabilities of VC-MSCs into all three germ layers.

Main Methods:

• Isolation of villous chorion-MSCs (VC-MSCs) from placenta obtained via C-section.
• Expansion of VC-MSCs up to the tenth passage.
• Phenotypic characterization using fluorescence-activated cell sorting (FACS).
• Assessment of differentiation into three germ layers via cytochemical staining.

Main Results:

• VC-MSCs yielded significant cell numbers, reaching 3.06-4.23 × 10⁴ cells/cm² by passage 10.
• Phenotypic analysis confirmed stemness, showing positive expression for CD73, CD90, CD105 and negative for CD79, CD34, CD45, HLA-DR.
• VC-MSCs differentiated into neural cells (ectoderm), hepatocytes (endoderm), and chondrocytes, adipocytes, osteogenic cells (mesoderm).

Conclusions:

• VC-MSCs exhibit characteristics similar to other adult stem cells.
• VC-derived MSCs are a viable source for clinical applications in regenerative medicine.
• The multipotent differentiation capacity of VC-MSCs supports their therapeutic potential.