Cited by 138Adipose Tissue and MetabolismPeroxisome Proliferator-Activated ReceptorsMitochondrial Function and Pathology

Structural and Functional Consequences of Mitochondrial Biogenesis in Human Adipocytes in Vitro

Bogacka, Iwona, Ukropcova, Barbara, McNeil, Michele, Gimble, Jeffrey M., Smith, Steven R.·2005·The Journal of Clinical Endocrinology & Metabolism

Abstract

INTRODUCTION: Mitochondrial biogenesis is a complex process, and several factors and signaling pathways regulate this process in muscle or brown adipocytes. The aim of the study was to explore pathways affecting mitochondrial biogenesis and fatty acid oxidation (FAO) in human white adipocytes. METHODS: Human preadipocytes obtained from liposuction samples were differentiated in vitro. On the 10th day of differentiation, 4 microM forskolin and 1 microM peroxisome proliferator-activated receptor-gamma (PPARgamma) agonist (pioglitazone, rosiglitazone, or GW 929) or 10 microM PPARalpha agonist (WY-14,643) were added to the media for 96 h. Quantitative real-time PCR was used to determine gene expression/mitochondrial copy number and 14C-labeled palmitate to measure direct energy dissipation. RESULTS: The treatment of adipocytes with forskolin increased mitochondrial copy number and the expression of genes involved in mitochondrial biogenesis (PPARgamma coactivator 1alpha and transcriptional factor A) and fatty acid oxidation (PPARalpha and medium-chain acyl-coenzyme A dehydrogenase). The end (CO2) and intermediate products (14C-labeled acid-soluble products) of FAO were also increased after forskolin treatment. PPARgamma and PPARalpha agonists increased mitochondrial copy number, uncoupling protein 1, medium-chain acyl-coenzyme A dehydrogenase, and carnitine palmitoyltransferase 1, but did not change PPARalpha, PPARgamma coactivator 1alpha, or transcriptional factor A mRNA levels. FAO was higher after rosiglitazone, GW 929, and WY-14,643 but not after pioglitazone treatment. CONCLUSIONS: Pharmacological activation of the cAMP or PPARgamma pathway pushes the white adipocyte down the oxidative continuum. The direct energy-dissipating effects could be significant tools to treat obesity and to improve insulin resistance in type 2 diabetic patients by reduction of fat accumulation in adipocytes or by reprogramming fatty acid metabolism.

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Crossref · 10.1210/jc.2005-1024

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  • Mitochondrial levels in white adipocytes are also increased in response to adrenergic stimulation, β-3 agonists, and CB1 blockade in mice, again in parallel with enhanced insulin sensitivity.

    “Mitochondrial levels in white adipocytes are also increased in response to adrenergic stimulation, ␤-3 agonists, and CB1 blockade in mice (195,199,200), again in parallel with enhanced insulin sensitivity.”
  • 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
Bogacka, I., Ukropcova, B., McNeil, M., Gimble, J. M., & Smith, S. R.
Affiliations
Pennington Biomedical Research Center (US)
Corresponding author
Bogacka, Iwona
Venue
The Journal of Clinical Endocrinology & Metabolism
Published
2005-12
Volume
90
Issue
12
Pages
6650-6656
ISSN
  • 0021-972X (ISSN-L)
  • 1945-7197
OpenAlex
W1970246917
Cited by
138
References
45
Citations by year
2025: 4 · 2024: 3 · 2023: 3 · 2022: 3 · 2021: 8 · 2020: 10 · 2019: 9 · 2018: 2 · 2017: 5 · 2016: 6 · 2015: 7 · 2014: 9 · 2013: 3 · 2012: 11
FWCI
6.02
Type
journal article
Language
en
Open access
closed
Locations
  • The Journal of Clinical Endocrinology & Metabolism (publishedVersion)
  • PubMed (publishedVersion)
Funders
Takeda Pharmaceuticals North America
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 › Mitochondrial Function and Pathology
Keywords
mitochondrial biogenesis, white adipocytes, fatty acid oxidation, PPARγ agonists, PPARα agonist, forskolin, cAMP signaling, PGC-1α, TFAM, UCP1, carnitine palmitoyltransferase 1, medium-chain acyl-CoA dehydrogenase, mitochondrial DNA copy number, energy dissipation, preadipocyte differentiation, obesity, type 2 diabetes, insulin resistance
MeSH terms
Cells, Cultured, DNA, Mitochondrial, Fatty Acids, Colforsin, Glycerol, Humans, Mitochondria, Osmolar Concentration, Oxidation-Reduction, Gene Expression, Adipocytes, Gene Dosage, PPAR alpha, PPAR gamma

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