Equine Platelet Lysate Gel: A Matrix for Mesenchymal Stem Cell Delivery

Area of Science:

• Biomaterials Science
• Stem Cell Biology
• Regenerative Medicine

Background:

• Mesenchymal stem cells (MSCs) require adequate nourishment for survival and retention at delivery sites.
• Existing bioscaffolds often lack direct cell nourishment capabilities.
• Platelet lysate, rich in growth factors, can form a gel matrix (ePL gel) for potential MSC delivery.

Purpose of the Study:

• To characterize growth factor and cytokine release from ePL gel with encapsulated MSCs over 14 days.
• To measure the viability and proliferation of MSCs within ePL gel.
• To compare ePL gel-MSCs with MSCs in monolayer culture.

Main Methods:

• Equine bone marrow-derived MSCs were encapsulated in ePL gel.
• Growth factor and cytokine release (IL-1β, IL-10, TGF-β, VEGF, PDGF-BB) were measured.
• MSC viability and proliferation were assessed over 14 days and compared to monolayer cultures.

Main Results:

• ePL gel with MSCs showed significantly higher release of IL-1β, IL-10, and TGF-β compared to monolayer MSCs.
• PDGF-BB release was lower in ePL gel-MSCs, while VEGF tended to increase.
• MSC viability and proliferation in ePL gel were comparable to monolayer cultures up to 14 days.

Conclusions:

• ePL gel supports MSC viability and proliferation for up to 14 days.
• ePL gel demonstrates potential as a bioscaffold for MSC delivery.
• Further research is warranted to explore ePL gel's therapeutic applications.