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Updated: Jun 15, 2026

Mechanism of Regulation of Adipocyte Numbers in Adult Organisms Through Differentiation and Apoptosis Homeostasis
08:34

Mechanism of Regulation of Adipocyte Numbers in Adult Organisms Through Differentiation and Apoptosis Homeostasis

Published on: June 3, 2016

Redundant control of adipogenesis by histone deacetylases 1 and 2

Michael Haberland1, Michele Carrer, Mayssa H Mokalled

  • 1Department of Molecular Biology, The University of Texas Southwestern Medical Center, Dallas, Texas 75390-9148, USA.

The Journal of Biological Chemistry
|March 2, 2010
PubMed

Insights

Histone deacetylase (HDAC) inhibitors block fat cell differentiation but enhance bone cell development. Genetic deletion of HDAC1 and HDAC2 specifically impairs adipogenesis, revealing their crucial roles in this process.

Area of Science:

  • Biochemistry
  • Cell Biology
  • Molecular Biology

Background:

  • Adipocyte differentiation is a complex process regulated by transcriptional factors.
  • Histone deacetylases (HDACs) are enzymes involved in gene regulation.
  • The specific role of HDACs in adipogenesis is not fully understood.

Purpose of the Study:

  • To investigate the role of HDACs in adipocyte differentiation.
  • To determine if HDAC inhibition affects other mesenchymal differentiation pathways.
  • To identify specific HDACs involved in adipogenesis.

Main Methods:

  • In vitro treatment of cells with HDAC inhibitors.
  • Assessment of adipocyte differentiation markers (e.g., lipid accumulation).
  • Genetic deletion of specific HDAC genes (HDAC1, HDAC2) in mesenchymal precursor cells.
  • Comparison with osteoblastogenesis to assess pathway specificity.

Main Results:

  • HDAC inhibitors significantly blocked adipocyte differentiation in vitro.
  • HDAC inhibition enhanced osteoblastogenesis, indicating specificity.
  • Genetic deletion of HDAC1 and HDAC2 reduced lipid accumulation in differentiating cells.
  • HDAC1 and HDAC2 play both redundant and essential roles in adipogenesis.

Conclusions:

  • HDACs play a critical, previously unrecognized role in regulating adipocyte differentiation.
  • Specific class I HDACs, HDAC1 and HDAC2, are key regulators of adipogenesis.
  • HDAC activity differentially impacts adipogenesis and osteoblastogenesis.

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