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Keipert, S.* ; Klaus, S.* ; Heldmaier, G.* ; Jastroch, M.*

UCP1 ectopically expressed in murine muscle displays native function and mitigates mitochondrial superoxide production.

Biochim. Biophys. Acta 1797, 324-330 (2010)
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Mitochondrial uncoupling in skeletal muscle has raised a major interest as a therapeutic target for treatment of obesity, insulin sensitivity, and age-related disease. These physiological effects could be demonstrated in several mouse models ectopically expressing uncoupling protein 1 (UCP1). Here, we investigated whether UCP1 expressed under the control of the human skeletal actin (HSA) promoter in mouse skeletal muscle can be regulated, and whether it affects mitochondrial superoxide production. We show that the skeletal muscle UCP1 can be fully inhibited by a purine nucleotide (GDP) and reactivated by fatty acids (palmitate). During mitochondrial resting state (State 4), mitochondrial superoxide production is about 76% lower in transgenic mice. We suggest that this reduction is due to uncoupling activity as the administration of GDP restores superoxide production to wildtype levels. Our study confirms native behaviour of UCP1 in skeletal muscle and demonstrates beneficial effects on prevention of mitochondrial reactive oxygen species production which may reduce age-related deleterious processes.
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Publication type Article: Journal article
Document type Scientific Article
Language english
Publication Year 2010
HGF-reported in Year 0
ISSN (print) / ISBN 0006-3002
Quellenangaben Volume: 1797, Issue: 2, Pages: 324-330 Article Number: , Supplement: ,
Publisher Elsevier
POF-Topic(s) 30201 - Metabolic Health
Research field(s) Helmholtz Diabetes Center
PSP Element(s) G-502200-001
PubMed ID 19958747
Erfassungsdatum 2010-12-31