The high-mobility-group transcription factor Sox8 is a negative regulator of osteoblast differentiation.

Sock E, Wegner M (2005)


Publication Type: Journal article, Original article

Publication year: 2005

Journal

Publisher: Rockefeller University Press

Pages Range: 899-910

Journal Issue: 168

DOI: 10.1083/jcb.200408013

Abstract

Bone remodeling is an important physiologic process that is required to maintain a constant bone mass. This is achieved through a balanced activity of bone-resorbing osteoclasts and bone-forming osteoblasts. In this study, we identify the high mobility group transcription factor Sox8 as a physiologic regulator of bone formation. Sox8-deficient mice display a low bone mass phenotype that is caused by a precocious osteoblast differentiation. Accordingly, primary osteoblasts derived from these mice show an accelerated mineralization ex vivo and a premature expression of osteoblast differentiation markers. To confirm the function of Sox8 as a negative regulator of osteoblast differentiation we generated transgenic mice that express Sox8 under the control of an osteoblast-specific Col1a1 promoter fragment. These mice display a severely impaired bone formation that can be explained by a strongly reduced expression of runt-related transcription factor 2, a gene encoding a transcription factor required for osteoblast differentiation. Together, these data demonstrate a novel function of Sox8, whose tightly controlled expression is critical for bone formation.

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How to cite

APA:

Sock, E., & Wegner, M. (2005). The high-mobility-group transcription factor Sox8 is a negative regulator of osteoblast differentiation. The Journal of Cell Biology, 168, 899-910. https://doi.org/10.1083/jcb.200408013

MLA:

Sock, Elisabeth, and Michael Wegner. "The high-mobility-group transcription factor Sox8 is a negative regulator of osteoblast differentiation." The Journal of Cell Biology 168 (2005): 899-910.

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