Hypoxia-inducible factor-1α regulates β cell function in mouse and human islets
Open accessAbstract
Hypoxia-inducible factor-1alpha (HIF-1alpha) is a transcription factor that regulates cellular stress responses. While the levels of HIF-1alpha protein are tightly regulated, recent studies suggest that it can be active under normoxic conditions. We hypothesized that HIF-1alpha is required for normal beta cell function and reserve and that dysregulation may contribute to the pathogenesis of type 2 diabetes (T2D). Here we show that HIF-1alpha protein is present at low levels in mouse and human normoxic beta cells and islets. Decreased levels of HIF-1alpha impaired glucose-stimulated ATP generation and beta cell function. C57BL/6 mice with beta cell-specific Hif1a disruption (referred to herein as beta-Hif1a-null mice) exhibited glucose intolerance, beta cell dysfunction, and developed severe glucose intolerance on a high-fat diet. Increasing HIF-1alpha levels by inhibiting its degradation through iron chelation markedly improved insulin secretion and glucose tolerance in control mice fed a high-fat diet but not in beta-Hif1a-null mice. Increasing HIF-1alpha levels markedly increased expression of ARNT and other genes in human T2D islets and improved their function. Further analysis indicated that HIF-1alpha was bound to the Arnt promoter in a mouse beta cell line, suggesting direct regulation. Taken together, these findings suggest an important role for HIF-1alpha in beta cell reserve and regulation of ARNT expression and demonstrate that HIF-1alpha is a potential therapeutic target for the beta cell dysfunction of T2D.
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In pancreatic β cells, excessive HIF-1α signaling driven by hypoxia, glucotoxicity, or oxidative stress impairs mitochondrial metabolism and ATP production, compromising glucose-stimulated insulin secretion.
“In pancreatic β cells, excessive HIF-1α signaling - driven by hypoxia, glucotoxicity, or oxidative stress - impairs mitochondrial metabolism and ATP production, thereby compromising glucose stimulated insulin secretion [[238], [239], [240]].”
From HIF inhibition: Current strategies and clinical challenges (2026) · cites this paper as [239]
The Discussion (page unavailable) says very high HIF-1α levels, including those associated with severe hypoxia, are deleterious to β-cell function; the section on methods of increasing HIF-1α reports impaired glucose-stimulated insulin secretion after marked HIF-1α overexpression. But the paper attributes reduced ATP generation to decreased HIF-1α, not excessive signaling, and does not establish impaired mitochondrial metabolism or glucotoxicity and oxidative stress as causes of the claimed pathway. (LLM, conf=0.88)
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- Authors
- Cheng, K., Ho, K., Stokes, R., Scott, C., Lau, S. M., Hawthorne, W. J., O’Connell, P. J., Loudovaris, T., Kay, T. W., Kulkarni, R. N., Okada, T., Wang, X. L., Yim, S. H., Shah, Y., Grey, S. T., Biankin, A. V., Kench, J. G., Laybutt, D. R., Gonzalez, F. J., Kahn, C. R., & Gunton, J. E.
- Affiliations
- Garvan Institute of Medical Research (AU)
- The University of Sydney (AU)
- Joslin Diabetes Center (US)
- National Institutes of Health (US)
- Corresponding author
- Gunton, Jenny E.
- ORCID
- Venue
- Journal of Clinical Investigation
- Published
- 2010-06-01
- Volume
- 120
- Issue
- 6
- Pages
- 2171-2183
- ISSN
- 0021-9738 (ISSN-L)
- PMC
- PMC2877560
- OpenAlex
- W2158255229
- Cited by
- 230
- References
- 13
- Citations by year
- 2026: 7 · 2025: 8 · 2024: 14 · 2023: 18 · 2022: 17 · 2021: 14 · 2020: 11 · 2019: 17 · 2018: 15 · 2017: 11 · 2016: 14 · 2015: 6 · 2014: 19 · 2013: 20 · 2012: 26
- FWCI
- 19.93
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Journal of Clinical Investigation (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Pfizer
- Diabetes Australia Research Trust
- Diabetes Australia
- Cancer Institute NSW
- Royal Australasian College of Physicians
- Servier
- National Institutes of Health
- Medical Research Council
- National Health and Medical Research Council
- National Institute of Diabetes and Digestive and Kidney Diseases (DK60837-02, R01 DK-67536, R01 DK-33201, K08 DK02885, K08DK002885, R01DK060837, R01DK033201, R01DK067536)
- Topics
- Health Sciences › Medicine › Surgery › Pancreatic function and diabetes
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Diabetes and associated disorders
- Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Treatment and Management
- Keywords
- hypoxia-inducible factor-1α, beta-cell function, pancreatic islets, type 2 diabetes, beta-cell reserve, insulin secretion, impaired glucose tolerance, high-fat diet, iron chelation, ARNT, transcriptional regulation
- MeSH terms
- Animals, Hypoxia, Cell Line, Glucose, Humans, Insulin, Mice, Inbred C57BL, Transcription Factors, Mice, Knockout, Insulin-Secreting Cells, Mice, Hypoxia-Inducible Factor 1, alpha Subunit
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