Abstract
Dental tissues are considered as ideal autologous sources of multipotent stem cells. Presently, human dental pulp stem cells (DPSCs) are largely being isolated and expanded in media containing fetal bovine serum (FBS). However, the use of FBS has limitations due to its animal origin. Therefore, the present study evaluated the morphology, proliferation rate, population doubling time (PDT) and colony-forming unit fibroblast (CFU-F) efficiency of DPSCs cultured in animal serum-containing medium (SCM) and serumfree medium (SFM) in addition to serum-free culture conditions by supplementing human blood-derivatives such as platelet lysate (PL), fresh frozen plasma (FFP) and umbilical cord blood serum (UCS) at 2.5%, 5% and 7.5% concentrations. Established DPSCs had spindle-shape during primary culture but acquired characteristic fibroblast-like features when cultured in PL, FFP and UCS. DPSCs in SCM, SFM and PL had significantly (P<0.05) higher proliferative potential than those in UCS and FFP and these observations were supported by PDT values. The CFU efficiency of DPSCs was confirmed in all culture conditions with a slightly varied clonogenic potential in blood-derived components. Based on the growth kinetics and CFU ability, it is concluded that PL could be considered as a suitable alternative to FBS for the ex vivo expansion of DPSCs.
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