Chondrogenic Potential of Synovium-Derived Progenitor Cells in Three-Dimensional Culture: A Review
DOI:
https://doi.org/10.5281/zenodo.22237773Keywords:
synovium; mesenchymal stromal cells; chondrogenesis; three-dimensional culture; hypertrophyAbstract

Background: Synovium-derived mesenchymal stromal cells outperform other adult sources in cartilage-forming assays, and
three-dimensional culture is required for a chondrocytic phenotype at all.
Objective: To review the evidence for synovial superiority, the three-dimensional systems used, and the hypertrophy that
limits it.
Methods: Narrative review of studies comparing mesenchymal sources for chondrogenesis and of three-dimensional culture
of synovial cells.
Findings: Synovium yields roughly a hundredfold more colonies per nucleated cell than bone marrow, and retains
chondrogenic capacity where other sources lose it. Hypoxia at 5% oxygen raises SOX9, COL2A1 and ACAN 1.4- to 2.3-fold while
suppressing COL10A1, though one three-way comparison found bone marrow cells deposited the most glycosaminoglycan.
Conclusions: The case for synovium rests on yield and retained potency rather than a ceiling advantage in matrix quality.
Suppressing hypertrophy, not selecting a source, is the limiting step.
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