Cited by 917Pancreatic function and diabetesMitochondrial Function and PathologyDiabetes Treatment and Management

Uncoupling protein-2 negatively regulates insulin secretion and is a major link between obesity, β-cell dysfunction, and type 2 diabetes.

Open access
Zhang, Chen-Yu, Baffy, György, Perret, Pascale, Krauss, Stefan, Peroni, Odile, Grujic, Danica, Hagen, Thilo, Vidal-Puig, Antonio J. +7 more·2001·Cell

Abstract

beta cells sense glucose through its metabolism and the resulting increase in ATP, which subsequently stimulates insulin secretion. Uncoupling protein-2 (UCP2) mediates mitochondrial proton leak, decreasing ATP production. In the present study, we assessed UCP2's role in regulating insulin secretion. UCP2-deficient mice had higher islet ATP levels and increased glucose-stimulated insulin secretion, establishing that UCP2 negatively regulates insulin secretion. Of pathophysiologic significance, UCP2 was markedly upregulated in islets of ob/ob mice, a model of obesity-induced diabetes. Importantly, ob/ob mice lacking UCP2 had restored first-phase insulin secretion, increased serum insulin levels, and greatly decreased levels of glycemia. These results establish UCP2 as a key component of beta cell glucose sensing, and as a critical link between obesity, beta cell dysfunction, and type 2 diabetes.

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Crossref · 10.1016/s0092-8674(01)00378-6

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  • In a mixed background, UCP2 knockout improves glycemic control in ob/ob mice.

    “In a mixed background, UCP2 knockout improves glycemic control in ob/ob mice (258), whereas in a pure C57BL6/J background, UCP2 knockout accelerates ␤-cell failure and diabetes (259).”

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Authors
Zhang, C.-Y., Baffy, G., Perret, P., Krauss, S., Peroni, O., Grujic, D., Hagen, T., Vidal-Puig, A. J., Boss, O., Kim, Y.-B., Zheng, X. X., Wheeler, M. B., Shulman, G. I., Chan, C. B., & Lowell, B. B.
Affiliations
  • Brigham and Women's Hospital (US)
  • Howard Hughes Medical Institute (US)
  • Beth Israel Deaconess Medical Center (US)
  • University of Toronto (CA)
  • University of Prince Edward Island (CA)
Corresponding author
Lowell, Bradford B.
Venue
Cell
Publisher
Elsevier BV
Published
2001-06
Volume
105
Issue
6
Pages
745-755
ISSN
0092-8674 (ISSN-L)
OpenAlex
W2101870887
Cited by
917
References
57
Citations by year
2026: 4 · 2025: 8 · 2024: 14 · 2023: 10 · 2022: 21 · 2021: 32 · 2020: 24 · 2019: 23 · 2018: 21 · 2017: 27 · 2016: 28 · 2015: 37 · 2014: 38 · 2013: 45 · 2012: 57
FWCI
55.09
Type
journal article
Language
en
Open access
Locations
  • Cell (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute of Diabetes and Digestive and Kidney Diseases (P30DK057521, R01 DK 53477, T32 DK07533, P30DK046200, R01DK040936, R01DK053477, R37DK053477, DK57521, T32DK007533, DK46200.)
Topics
  • Health Sciences › Medicine › Surgery › Pancreatic function and diabetes
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Treatment and Management
Keywords
UCP2, insulin secretion, beta-cell dysfunction, type 2 diabetes, obesity, glucose-stimulated insulin secretion, mitochondrial proton leak, ATP production, ob/ob mice, first-phase insulin secretion, glycemia
MeSH terms
Uncoupling Protein 2, Insulin Secretion, Adenosine Triphosphate, Animals, Blood Glucose, Body Weight, Diabetes Mellitus, Diabetes Mellitus, Type 2, Disease Models, Animal, Homeostasis, Humans, Hyperglycemia, Insulin, Ion Channels, Islets of Langerhans, Male, Mice, Obese, Models, Biological, Obesity, Proteins, RNA, Messenger, Uncoupling Agents, Mice, Knockout, Gene Targeting, Thermogenesis, Mitochondrial Proteins, Membrane Transport Proteins, Mice

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