Cited by 52Bone Metabolism and DiseasesEstrogen and related hormone effectsSteroid Chemistry and Biochemistry

The osteogenic transcription factor runx2 controls genes involved in sterol/steroid metabolism, including CYP11A1 in osteoblasts

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Teplyuk, Nadiya M., Zhang, Ying, Lou, Yang, Hawse, John R., Hassan, Mohammad Q., Teplyuk, Viktor I., Pratap, Jitesh, Galindo, Mario +4 more·2009·Molecular Endocrinology

Abstract

Steroid hormones including (1,25)-dihydroxyvitamin D3, estrogens, and glucocorticoids control bone development and homeostasis. We show here that the osteogenic transcription factor Runx2 controls genes involved in sterol/steroid metabolism, including Cyp11a1, Cyp39a1, Cyp51, Lss, and Dhcr7 in murine osteoprogenitor cells. Cyp11a1 (P450scc) encodes an approximately 55-kDa mitochondrial enzyme that catalyzes side-chain cleavage of cholesterol and is rate limiting for steroid hormone biosynthesis. Runx2 is coexpressed with Cyp11a1 in osteoblasts as well as nonosseous cell types (e.g. testis and breast cancer cells), suggesting a broad biological role for Runx2 in sterol/steroid metabolism. Notably, osteoblasts and breast cancer cells express an approximately 32-kDa truncated isoform of Cyp11a1 that is nonmitochondrial and localized in both the cytoplasm and the nucleus. Chromatin immunoprecipitation analyses and gel shift assays show that Runx2 binds to the Cyp11a1 gene promoter in osteoblasts, indicating that Cyp11a1 is a direct target of Runx2. Specific Cyp11a1 knockdown with short hairpin RNA increases cell proliferation, indicating that Cyp11a1 normally suppresses osteoblast proliferation. We conclude that Runx2 regulates enzymes involved in sterol/steroid-related metabolic pathways and that activation of Cyp11a1 by Runx2 may contribute to attenuation of osteoblast growth.

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Crossref · 10.1210/me.2008-0270

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  • CYP11A1 is expressed in classical steroidogenic tissues and in additional organs or tissues including brain, skin, lungs, gastrointestinal tract, bone, breast, prostate, thymus, immune cells, and several cancer cells.

    “evidence has accumulated that CYP11A1 is expressed in additional organs or tissues including brain, skin, lungs, gastrointestinal (GI) tract, bone, breast, prostate, thymus, immune cells and several cancer cells of different origin”

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Authors
Teplyuk, N. M., Zhang, Y., Lou, Y., Hawse, J. R., Hassan, M. Q., Teplyuk, V. I., Pratap, J., Galindo, M., Stein, J. L., Stein, G. S., Lian, J. B., & van Wijnen, A. J.
Affiliations
  • University of Massachusetts Chan Medical School (US)
  • Mayo Clinic (US)
  • University of Chile (CL)
  • Department of Cell Biology and Cancer Center (N.M.T., Y.Z., Y.L., M.Q.H., J.P., J.L.S., G.S.S., J.B.L., A.J.v.W.), Worcester, Massachusetts 01655
Venue
Molecular Endocrinology
Published
2009-06-01
Volume
23
Issue
6
Pages
849-861
ISSN
  • 0888-8809 (ISSN-L)
  • 1944-9917
OpenAlex
W2169858408
Cited by
52
References
80
Citations by year
2026: 2 · 2025: 2 · 2024: 1 · 2023: 4 · 2021: 5 · 2020: 3 · 2019: 1 · 2018: 3 · 2017: 3 · 2016: 1 · 2015: 5 · 2014: 1 · 2013: 4 · 2012: 6
FWCI
2.28
Type
journal article
Language
en
Open access
Locations
  • Molecular Endocrinology (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • eScholarship@UMassChan (submittedVersion)
Funders
  • University of Glasgow
  • National Institutes of Health
  • University of California, San Francisco
  • National Institute of Arthritis and Musculoskeletal and Skin Diseases (R01AR049069, R01 AR49069, R01AR039588)
  • National Institute of Dental and Craniofacial Research (R37DE012528)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bone Metabolism and Diseases
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Estrogen and related hormone effects
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Steroid Chemistry and Biochemistry
Keywords
Runx2, CYP11A1, sterol metabolism, steroidogenesis, osteoblasts, osteoprogenitor cells, transcriptional regulation, CYP51, LSS, DHCR7, 1,25-dihydroxyvitamin D3, estrogen, glucocorticoids, bone homeostasis, osteoblast proliferation, breast cancer cells
MeSH terms
Animals, Cell Differentiation, Cholesterol Side-Chain Cleavage Enzyme, Humans, Isoenzymes, Mitochondria, Molecular Weight, Osteoblasts, Osteogenesis, Promoter Regions, Genetic, RNA, Messenger, Sterols, Reproducibility of Results, Transcriptional Activation, Gene Expression Regulation, Enzymologic, Protein Transport, RNA, Small Interfering, Cell Proliferation, Core Binding Factor Alpha 1 Subunit, Mice, Gene Knockdown Techniques

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