Cited by 134Adipose Tissue and MetabolismPeroxisome Proliferator-Activated ReceptorsMetabolism, Diabetes, and Cancer

Thiazolidinedione exposure increases the expression of uncoupling protein 1 in cultured human preadipocytes.

Digby, Janet E, Montague, Carl T, Sewter, Ciaran P, Sanders, Louise, Wilkison, William O, O'Rahilly, Stephen, Prins, Johannes B·1998·Diabetes

Abstract

Thiazolidinediones (TZDs) are a novel class of insulin-sensitizing agents used in the treatment of NIDDM and are potent agonists for the nuclear hormone receptor peroxisome proliferator-activated receptor gamma (PPARgamma). The thiazolidinedione BRL 49653 has been shown to promote the differentiation of the HIB-1B brown preadipocyte cell line and to increase rat interscapular brown adipose tissue (BAT) mass. Given the importance of brown fat in the control of energy metabolism in rodents, this may represent an important therapeutic effect of this class of compound. To date, however, no studies examining the effects of TZDs on human brown fat have been reported. In the present study, we have measured uncoupling protein 1 (UCP-1) mRNA, a specific marker for BAT, in isolated adipocytes and subcultured preadipocytes prepared from different adult human adipose tissue depots. Consistent with previous studies of adult human whole adipose tissue, UCP-1 mRNA was detectable in isolated human adipocytes prepared from all depots studied with a rank order of perirenal, omental, and subcutaneous. BRL 49653 treatment of subcultured human pre-adipocytes prepared from all depots resulted in increased levels of UCP-1 mRNA, compared with those of the vehicle-treated cells. When exposed to BRL 49653 for 5 days, preadipocytes from the human perirenal depot accumulated lipid, and a proportion of cells showed clear mitochondrial staining for UCP-1 protein by confocal microscopy. Thus, cells of the brown fat lineage were detectable in all human adipose depots studied, and cultured human pre-adipocytes, particularly from the perirenal depot, showed a marked increase in UCP-1 expression in response to thiazolidinediones. Given the role of brown adipocytes in the enhancement of energy expenditure, promotion of brown fat adipogenesis by thiazolidinediones could contribute to the beneficial effects of these drugs on insulin resistance in humans.

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Crossref · 10.2337/diab.47.1.138

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  • Administration of thiazolidinediones induces changes in mitochondrial content and remodeling in white adipocytes concomitantly with an improvement in insulin sensitivity.

    “Administration of thiazolidinediones induces changes in mitochondrial content and remodeling in white adipocytes concomitantly with an improvement in insulin sensitivity (170, 173, 177, 190, 194 -198).”

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Authors
Digby, J. E., Montague, C. T., Sewter, C. P., Sanders, L., Wilkison, W. O., O'Rahilly, S., & Prins, J. B.
Affiliations
  • University of Cambridge (GB)
  • Molecular Biochemistry, GlaxoWellcome,Research Triangle Park North Carolina
  • Departments of Medicine and Clinical Biochemistry, University of Cambridge Cambridge, U.K.
Venue
Diabetes
Published
1998-01-01
Volume
47
Issue
1
Pages
138-141
ISSN
  • 0012-1797 (ISSN-L)
  • 1939-327X
OpenAlex
W2060846519
Cited by
134
References
0
Citations by year
2026: 1 · 2025: 2 · 2024: 3 · 2023: 1 · 2022: 1 · 2021: 1 · 2020: 2 · 2019: 4 · 2018: 6 · 2017: 8 · 2016: 4 · 2015: 7 · 2014: 5 · 2013: 4 · 2012: 4
FWCI
6.13
Type
journal article
Language
en
Open access
closed
Locations
  • Diabetes (publishedVersion)
  • PubMed (publishedVersion)
Funders
University of Cambridge
Topics
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Peroxisome Proliferator-Activated Receptors
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
Keywords
thiazolidinediones, UCP1, brown adipose tissue, human preadipocytes, PPARγ, adipose tissue depots, perirenal fat, adipogenesis, insulin resistance, energy expenditure
MeSH terms
Uncoupling Protein 1, Rosiglitazone, Base Sequence, Carrier Proteins, Cells, Cultured, Female, Gene Expression Regulation, Humans, Hypoglycemic Agents, Ion Channels, Male, Membrane Proteins, RNA, Messenger, Stem Cells, Thiazoles, Transcription Factors, Polymerase Chain Reaction, Adipocytes, DNA Primers, Receptors, Cytoplasmic and Nuclear, Mitochondrial Proteins, Thiazolidinediones

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