Cited by 4,246Bone Metabolism and DiseasesBone and Dental Protein StudiesDevelopmental Biology and Gene Regulation

Osf2/Cbfa1: A Transcriptional Activator of Osteoblast Differentiation

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Ducy, Patricia, Zhang, Rui, Geoffroy, Valérie, Ridall, Amy L, Karsenty, Gérard·1997·Cell

Abstract

The osteoblast is the bone-forming cell. The molecular basis of osteoblast-specific gene expression and differentiation is unknown. We previously identified an osteoblast-specific cis-acting element, termed OSE2, in the Osteocalcin promoter. We have now cloned the cDNA encoding Osf2/Cbfa1, the protein that binds to OSE2. Osf2/Cbfa1 expression is initiated in the mesenchymal condensations of the developing skeleton, is strictly restricted to cells of the osteoblast lineage thereafter, and is regulated by BMP7 and vitamin D3. Osf2/Cbfa1 binds to and regulates the expression of multiple genes expressed in osteoblasts. Finally, forced expression of Osf2/Cbfa1 in nonosteoblastic cells induces the expression of the principal osteoblast-specific genes. This study identifies Osf2/Cbfa1 as an osteoblast-specific transcription factor and as a regulator of osteoblast differentiation.

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Crossref · 10.1016/s0092-8674(00)80257-3

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  • Deleting Runx2 or osterix blocks osteoblast differentiation.

    “Gene deletion studies have shown that absence of runt-related transcription factor 2 (Runx2) or a downstream factor, osterix, are critical for osteoblast differentiation”
  • Runx2 is a master gene of osteoblast differentiation, as demonstrated by Runx2-null mice being devoid of osteoblasts.

    “Additionally, Runx2 is a master gene of osteoblast differentiation, as demonstrated by the fact that Runx2-null mice are devoid of osteoblasts [26, 27].”

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Authors
Ducy, P., Zhang, R., Geoffroy, V., Ridall, A. L., & Karsenty, G.
Affiliations
The University of Texas MD Anderson Cancer Center (US)
Corresponding author
Karsenty, Gérard
Venue
Cell
Publisher
Elsevier BV
Published
1997-05
Volume
89
Issue
5
Pages
747-754
ISSN
0092-8674 (ISSN-L)
OpenAlex
W1994596418
Cited by
4,246
References
43
Citations by year
2026: 40 · 2025: 46 · 2024: 59 · 2023: 83 · 2022: 93 · 2021: 106 · 2020: 137 · 2019: 148 · 2018: 123 · 2017: 176 · 2016: 153 · 2015: 175 · 2014: 184 · 2013: 198 · 2012: 198
FWCI
34.19
Type
journal article
Language
en
Open access
Locations
  • Cell (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute of Dental and Craniofacial Research (DE11290, R01DE011290)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bone Metabolism and Diseases
  • Health Sciences › Medicine › Rheumatology › Bone and Dental Protein Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
Keywords
osteogenic differentiation, transcription factors, osteocalcin promoter, osteoblast-specific gene expression, BMP-7, vitamin D3, mesenchymal condensation, skeletal development, osteoblast lineage
MeSH terms
Amino Acid Sequence, Animals, Cell Differentiation, Cloning, Molecular, Molecular Sequence Data, Neoplasm Proteins, Osteoblasts, Promoter Regions, Genetic, Transcription Factors, Trans-Activators, Osteocalcin, Cell Adhesion Molecules, DNA, Complementary, Gene Expression Regulation, Developmental, Core Binding Factor Alpha 1 Subunit, Mice

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