TRANSFORMING GROWTH FACTOR-β1 EXPRESSION IN VARIOUS CONCENTRATIONS OF ADVANCED PLATELET-RICH FIBRIN MODULATING HUMAN DENTAL PULP STEM CELL DIFFERENTIATION
Objective: Modification of the speed and time of centrifugation based on the low-speed centrifugation concept for platelet-rich fibrin (PRF) has resulted in a new type of PRF known as advanced PRF (A-PRF). A-PRF can release several types of growth factors (GFs) that participate in the process of differentiation, such as transforming GF-β1 (TGF-β1). The aim of this study was to analyze TGF-β1 expression in various concentrations of A-PRF in the differentiation process of human dental pulp stem cells (hDPSCs).
Methods: hDPSC cultures were obtained from those of previous research (ethical approval form has been attached). These hDPSCs were in the 2nd–3rd passage, and serum starvation was done by reducing fetal bovine serum (FBS) levels in the hDPSC culture media. A-PRF was obtained using 10 ml blood collected from the cubital vein, which was centrifuged at 1500 rpm for 14 min and then divided into four concentration groups. TGF-β1 expression in 1%, 5%, and 25% A-PRF as well as in 10% FBS (control) was analyzed by ELISA on day 7.
Results: Although no significant differences were observed in TGF-β1 expression between 1%, 5%, and 25% A-PRF, and 10% FBS, it was observed that the higher the concentration of A-PRF, the greater the TGF-β1 expression.
Conclusion: The expression of TGF-β1 was consistent with the increase in A-PRF concentration. The highest TGF-β1 expression was detected in 25% A-PRF among all concentrations in the differentiation process of hDPSCs.
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