2020
Glucagon stimulates gluconeogenesis by INSP3R1-mediated hepatic lipolysis
Perry RJ, Zhang D, Guerra MT, Brill AL, Goedeke L, Nasiri AR, Rabin-Court A, Wang Y, Peng L, Dufour S, Zhang Y, Zhang XM, Butrico GM, Toussaint K, Nozaki Y, Cline GW, Petersen KF, Nathanson MH, Ehrlich BE, Shulman GI. Glucagon stimulates gluconeogenesis by INSP3R1-mediated hepatic lipolysis. Nature 2020, 579: 279-283. PMID: 32132708, PMCID: PMC7101062, DOI: 10.1038/s41586-020-2074-6.Peer-Reviewed Original ResearchConceptsHepatic steatosisType 2Nonalcoholic fatty liver diseaseDiet-induced hepatic steatosisFatty liver diseasePlasma glucagon concentrationsHepatic adipose triglyceride lipaseHepatic acetyl-CoA contentHepatic glucose productionRatio of insulinHepatic glucose metabolismInositol triphosphate receptorAdipose triglyceride lipaseMitochondrial oxidationMitochondrial fat oxidationGlucose intoleranceLiver diseaseGlucagon concentrationsInsulin resistancePortal veinAcetyl-CoA contentHepatic lipolysisGlucagon biologyGlucose metabolismKnockout mice
2019
Obesity-associated, but not obesity-independent, tumors respond to insulin by increasing mitochondrial glucose oxidation
Rabin-Court A, Rodrigues MR, Zhang XM, Perry RJ. Obesity-associated, but not obesity-independent, tumors respond to insulin by increasing mitochondrial glucose oxidation. PLOS ONE 2019, 14: e0218126. PMID: 31188872, PMCID: PMC6561592, DOI: 10.1371/journal.pone.0218126.Peer-Reviewed Original ResearchMeSH KeywordsAlanineBreast NeoplasmsCell Line, TumorCitrate (si)-SynthaseColonic NeoplasmsFemaleGene Expression RegulationGlucoseGlutamic AcidHumansInsulinIsotope LabelingKetone OxidoreductasesLymphoma, B-CellMaleMelanomaMitochondriaObesityOrgan SpecificityOxidation-ReductionPhosphorylationProstatic NeoplasmsReceptor, InsulinSignal TransductionSkin NeoplasmsSmall Cell Lung CarcinomaConceptsCell divisionTumor cell linesCell linesMitochondrial glucose oxidationTumor typesObesity-driven insulin resistanceSubstrate preferenceMolecular mechanismsDose-dependent increaseGlucose oxidationPhysiologic insulinPyruvate dehydrogenase fluxWorse prognosisInsulin resistanceStable isotope methodObesityOxidative responsePhysiologic concentrationsSynthase fluxInsulinMetabolic signaturesTumor cellsTumorsDivisionLines
2018
Uncoupling Hepatic Oxidative Phosphorylation Reduces Tumor Growth in Two Murine Models of Colon Cancer
Wang Y, Nasiri AR, Damsky WE, Perry CJ, Zhang XM, Rabin-Court A, Pollak MN, Shulman GI, Perry RJ. Uncoupling Hepatic Oxidative Phosphorylation Reduces Tumor Growth in Two Murine Models of Colon Cancer. Cell Reports 2018, 24: 47-55. PMID: 29972790, PMCID: PMC6056247, DOI: 10.1016/j.celrep.2018.06.008.Peer-Reviewed Original ResearchConceptsControlled-release mitochondrial protonophoreTumor growthGlucose uptakeDiet-induced obesityMurine colon cancer modelColon cancer modelHepatic energy metabolismColon cancer pathogenesisHormonal milieuPlasma insulinFed miceInsulin infusionMurine modelColon cancerCancer modelCancer pathogenesisOxidative phosphorylationNeoplastic growthMitochondrial protonophoreHepatic oxidative phosphorylationObesityUnderlying mechanismEnergy metabolismCancerInsulin
2015
Controlled-release mitochondrial protonophore reverses diabetes and steatohepatitis in rats
Perry RJ, Zhang D, Zhang XM, Boyer JL, Shulman GI. Controlled-release mitochondrial protonophore reverses diabetes and steatohepatitis in rats. Science 2015, 347: 1253-1256. PMID: 25721504, PMCID: PMC4495920, DOI: 10.1126/science.aaa0672.Peer-Reviewed Original ResearchMeSH Keywords2,4-DinitrophenolAnimalsBlood GlucoseDelayed-Action PreparationsDiabetes Mellitus, Type 2Glucose Tolerance TestInsulin ResistanceLipid MetabolismLiver CirrhosisMaleMiceMitochondria, LiverMuscle, SkeletalNon-alcoholic Fatty Liver DiseaseOxidation-ReductionProton IonophoresRandom AllocationRatsRats, ZuckerConceptsNonalcoholic fatty liver diseaseNonalcoholic steatohepatitisInsulin resistanceRat modelControlled-release oral formulationsPlasma transaminase concentrationsFatty liver diseaseType 2 diabetesMitochondrial uncouplingProtein-synthetic functionChronic treatmentLiver diseaseMetabolic syndromeTransaminase concentrationsHepatic steatosisLiver fibrosisEffective therapyPreclinical modelsOral formulationSystemic toxicityClinical useRelated epidemicsBeneficial effectsSynthetic functionMitochondrial protonophore