An in vitro study into three different PRF preparations for osteogenesis potential

Area of Science:

• Biomaterials Science
• Cell Biology
• Regenerative Medicine

Background:

• Platelet-Rich Fibrin (PRF) derivatives are increasingly utilized in dentistry.
• Existing literature supports PRF's positive effects on various cell types.
• Limited comparative studies exist for newer PRF protocols (A-PRF+, i-PRF) against the original (L-PRF) concerning osteogenesis.

Purpose of the Study:

• To compare the osteogenic effects of Advanced Platelet-Rich Fibrin (A-PRF+), Leukocyte Platelet-Rich Fibrin (L-PRF), and injectable Platelet-Rich Fibrin (i-PRF).
• To evaluate the impact of these PRF variants on human osteoblast-like cells in vitro.
• To assess mineralization, calcium production, and gene expression related to osteogenesis.

Main Methods:

• A-PRF+, L-PRF, and i-PRF were prepared and conditioned for 6 days.
• Osteoblast-like cells (U2OS) were cultured with PRF-conditioned media or regular media.
• Osteogenic capacity was assessed via Alizarin Red S staining, calcium assays, alkaline phosphatase activity, and qPCR analysis of specific gene markers at multiple time points.

Main Results:

• A-PRF+ conditioned medium significantly increased mineralization and calcium production after 28 days compared to control.
• No significant differences in cell proliferation were observed across groups.
• i-PRF conditioned medium enhanced alkaline phosphatase activity and early cell differentiation compared to L-PRF and control.

Conclusions:

• All three PRF preparations (A-PRF+, L-PRF, i-PRF) demonstrate potential to augment osteogenic capacity in osteoblast-like cells.
• A-PRF+ exhibits the highest potential for promoting mineralization.
• i-PRF shows promise in enhancing early stages of osteoblast differentiation.