Journal of Dental Research

 

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Journal of Dental Research, Vol. 87, No. 8, 767-771 (2008)
DOI: 10.1177/154405910808700801

Biological

Differentiation of Stem Cells in the Dental Follicle

S. Yao, F. Pan, V. Prpic and G.E. Wise*

Department of Comparative Biomedical Sciences, Louisiana State University, School of Veterinary Medicine, Skip Bertman Drive, Baton Rouge, LA 70803, USA

Correspondence: * corresponding author, gwise{at}vetmed.lsu.edu

The dental follicle (DF) differentiates into the periodontal ligament. In addition, it may be the precursor of other cells of the periodontium, including osteoblasts and cementoblasts. We hypothesized that stem cells may be present in the DF and be capable of differentiating into cells of the periodontium. Stem cells were identified in the DF of the rat first mandibular molar by Hoechst staining, alkaline phosphatase staining, and expression of side-population stem cell markers. These cells were shown to be able to differentiate into osteoblasts/cementoblasts, adipocytes, and neurons. Treating the DF cell population with doxorubicin, followed by incubation in an adipogenesis medium, suggested that the adipocytes originated from stem cells. Thus, a possibly puripotent stem cell population is present in the rat DF.

Key Words: stem cells • dental follicle • differentiation


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