Cited by 112Adipose Tissue and MetabolismAdipokines, Inflammation, and Metabolic DiseasesRegulation of Appetite and Obesity

Adipose Tissue-specific Inhibition of Hypoxia-inducible Factor 1α Induces Obesity and Glucose Intolerance by Impeding Energy Expenditure in Mice*

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Zhang, Xinmei, Lam, Karen S.L., Ye, Hongying, Chung, Sookja K., Zhou, Mingyan, Wang, Yu, Xu, Aimin·2010·Journal of Biological Chemistry

Abstract

Hypoxia in adipose tissue has been postulated as a possible contributor to obesity-related chronic inflammation, insulin resistance, and metabolic dysfunction. HIF1α (hypoxia-inducible factor 1α), a master signal mediator of hypoxia response, is elevated in obese adipose tissue. However, the role of HIF1α in obesity-related pathologies remains to be determined. Here we show that transgenic mice with adipose tissue-selective expression of a dominant negative version of HIF1α developed more severe obesity and were more susceptible to high fat diet-induced glucose intolerance and insulin resistance compared with their wild type littermates. Obesity in the transgenic mice was attributed to impaired energy expenditure and reduced thermogenesis. Histological examination of interscapular brown adipose tissue (BAT) in the transgenic mice demonstrated a markedly increased size of lipid droplets and decreased mitochondrial density in adipocytes, a phenotype similar to that in white adipose tissue. These changes in BAT of the transgenic mice were accompanied by decreased mitochondrial biogenesis and reduced expression of key thermogenic genes. In the transgenic mice, angiogenesis in BAT was decreased but was little affected in white adipose tissue. These findings support an indispensable role of HIF1α in maintaining the thermogenic functions of BAT, possibly through promoting angiogenesis and mitochondrial biogenesis in this tissue.

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  1. Xu, A., Lam, M. C., Chan, K. W., Wang, Y., Zhang, J., Hoo, R. L., Xu, J. Y., Chen, B., Chow, W. S., Tso, A. W., and Lam, K. S. (2005) Proc. Natl. Acad. Sci. U.S.A. 102, 6086 -6091

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Authors
Zhang, X., Lam, K. S. L., Ye, H., Chung, S. K., Zhou, M., Wang, Y., & Xu, A.
Affiliations
  • Fudan University (CN)
  • University of Hong Kong (HK)
Corresponding author
Xu, Aimin
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
2010-10
Volume
285
Issue
43
Pages
32869-32877
ISSN
0021-9258 (ISSN-L)
OpenAlex
W1975452261
Cited by
112
References
39
Citations by year
2026: 2 · 2024: 9 · 2023: 7 · 2022: 4 · 2021: 4 · 2020: 9 · 2019: 3 · 2018: 11 · 2017: 14 · 2016: 5 · 2015: 5 · 2014: 10 · 2013: 15 · 2012: 7
FWCI
6.28
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Victoria University Research Repository (Victoria University) (submittedVersion)
  • The HKU Scholars Hub (University of Hong Kong) (submittedVersion)
Funders
  • National Natural Science Foundation of China
  • University of Hong Kong
Topics
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
  • Health Sciences › Medicine › Epidemiology › Adipokines, Inflammation, and Metabolic Diseases
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Regulation of Appetite and Obesity
Keywords
hypoxia-inducible factor-1α, adipose tissue, obesity, impaired glucose tolerance, insulin resistance, energy expenditure, brown adipose tissue, thermogenesis, mitochondrial biogenesis, angiogenesis, lipid droplets, mitochondrial density, high-fat diet, adipose tissue inflammation
MeSH terms
Animals, Adipose Tissue, Brown, Diet, Dietary Fats, Energy Metabolism, Gene Expression Regulation, Humans, Mice, Transgenic, Mitochondria, Neovascularization, Pathologic, Obesity, Organ Specificity, Adipocytes, Glucose Intolerance, Thermogenesis, Mice, Hypoxia-Inducible Factor 1, alpha Subunit

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