Mesenchymal Stem Cell Differentiation Induced by Lyophilized PRP During Early Osteogenesis

Area of Science:

• Biomaterials Science
• Stem Cell Biology
• Regenerative Medicine

Background:

• Platelet-rich plasma (PRP) is rich in bioactive factors that influence tissue repair.
• The specific effects of PRP on osteoblastic commitment in human mesenchymal stem cells (hMSCs) are not fully understood.

Purpose of the Study:

• To investigate the transcriptional response of hMSCs to PRP and lyophilized PRP (lyPRP).
• To compare the osteoinductive potential of PRP/lyPRP with osteoinductive medium (OM).

Main Methods:

• hMSCs were exposed to PRP, lyPRP, or OM for 24 hours or 7 days.
• A 48-gene panel assessing differentiation, adhesion, cell cycle, and signaling pathways was quantified.
• Two-way ANOVA, principal component analysis (PCA), and correlation networks were used for analysis.

Main Results:

• PRP and lyPRP upregulated proliferation, viability, and adhesion-related genes (e.g., cyclins/CDKs, SRC-axis).
• Canonical osteogenic markers (RUNX2, SP7, ALPL) were less induced by PRP/lyPRP compared to OM.
• PCA and network analysis revealed distinct signaling patterns between PRP/lyPRP and OM treatments over time.

Conclusions:

• PRP and lyPRP promote early proliferative and matrix-interaction states in hMSCs.
• PRP/lyPRP exhibit lower osteoinductive transcriptional pressure compared to OM.
• Optimizing PRP formulation, dosage, and timing is crucial for enhancing osteogenic differentiation for therapeutic goals.