PMID: 16629472Apr 25, 2006Paper

The expression of transcription factor Osterix in human periodontal ligament cells

Kōkūbyō Gakkai zasshi. The Journal of the Stomatological Society, Japan
Mamiko Ueda-Maeda

Abstract

Periodontal ligament (PDL) has a heterogeneous cell population, where some of the cells may be capable of differentiating into either cementoblasts or osteoblasts. Recently, C 2 H 2 zinc finger transcription factor Osterix has been reported. Osterix is one of the master regulators of bone cell differentiation and it has two different isoforms. According to a recent report, osteogenic differentiation of murine embryonic stem cells can be induced by overexpression of Osterix. The purpose of this study was to investigate about the expression of Osterix on human PDL (hPDL), and whether the osteogenic differentiation of hPDL cells can be induced by overexpression of Osterix. hPDL cells were obtained from healthy human teeth indicated for extraction for orthodontic treatment. All procedure used in this study was approved by the local ethical committee of Tokyo Medical and Dental University. To investigate expression of Osterix mRNA in hPDL tissues and cells, RT-PCR experiments were performed. Two different isoform Osterix expression vectors were made and transiently transfected into hPDL cells. Osteogenic differentiation was assessed by RT-PCR for genes associated with the osteoblast lineage such as Osteopontin, Osteocalcin, and Bone...Continue Reading

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