2022
Overexpression of UCP3 decreases mitochondrial efficiency in mouse skeletal muscle in vivo
Codella R, Alves TC, Befroy DE, Choi CS, Luzi L, Rothman DL, Kibbey RG, Shulman GI. Overexpression of UCP3 decreases mitochondrial efficiency in mouse skeletal muscle in vivo. FEBS Letters 2022, 597: 309-319. PMID: 36114012, DOI: 10.1002/1873-3468.14494.Peer-Reviewed Original ResearchConceptsOverexpression of UCP3ATP synthesisMitochondrial oxidationMitochondrial transmembrane proteinInner mitochondrial membraneSkeletal muscleMitochondrial oxidative phosphorylationMitochondrial oxidative metabolismMuscle-specific overexpressionMouse skeletal muscleTransmembrane proteinMitochondrial membraneProton leakPrecise functionOxidative phosphorylationMitochondrial efficiencyUCP3 expressionMitochondrial inefficiencyOverexpressionProtein 3UCP3Oxidative metabolismVivoMagnetic resonance spectroscopyPhosphorylationMetformin, phenformin, and galegine inhibit complex IV activity and reduce glycerol-derived gluconeogenesis
LaMoia TE, Butrico GM, Kalpage HA, Goedeke L, Hubbard BT, Vatner DF, Gaspar RC, Zhang XM, Cline GW, Nakahara K, Woo S, Shimada A, Hüttemann M, Shulman GI. Metformin, phenformin, and galegine inhibit complex IV activity and reduce glycerol-derived gluconeogenesis. Proceedings Of The National Academy Of Sciences Of The United States Of America 2022, 119: e2122287119. PMID: 35238637, PMCID: PMC8916010, DOI: 10.1073/pnas.2122287119.Peer-Reviewed Original ResearchConceptsGlucose-lowering effectPlasma glucose concentrationComplex I activityHepatic gluconeogenesisType 2 diabetes mellitusGlucose concentrationGlycerol-3-phosphate dehydrogenase activityI activityDiabetes mellitusSelective inhibitionMetforminInhibitionRelevant concentrationsGluconeogenesisPhenforminVivoMost studiesDehydrogenase activityGalegineMellitus
2001
In Vivo Effects of Uncoupling Protein-3 Gene Disruption on Mitochondrial Energy Metabolism*
Cline G, Vidal-Puig A, Dufour S, Cadman K, Lowell B, Shulman G. In Vivo Effects of Uncoupling Protein-3 Gene Disruption on Mitochondrial Energy Metabolism*. Journal Of Biological Chemistry 2001, 276: 20240-20244. PMID: 11274222, DOI: 10.1074/jbc.m102540200.Peer-Reviewed Original ResearchConceptsATP synthesisEnergy metabolismSkeletal muscleMitochondrial oxidative phosphorylationMitochondrial energy metabolismGene disruptionRatio of ATPOxidative phosphorylationATP productionTricarboxylic acid cycle fluxWhole-body levelUCP3KO miceWhole-body energy expenditureCellular levelProtein 3Cycle fluxLabeling experimentsFirst evidenceBody energy expenditureMetabolismVivoMeasurement of ratesPhosphorylationEnergy expenditureUCP3