2020
Insulin receptor substrates differentially exacerbate insulin-mediated left ventricular remodeling
Riehle C, Weatherford E, Wende A, Jaishy B, Seei A, McCarty N, Rech M, Shi Q, Reddy G, Kutschke W, Oliveira K, Pires K, Anderson J, Diakos N, Weiss R, White M, Drakos S, Xiang Y, Abel E. Insulin receptor substrates differentially exacerbate insulin-mediated left ventricular remodeling. JCI Insight 2020, 5: e134920. PMID: 32213702, PMCID: PMC7213803, DOI: 10.1172/jci.insight.134920.Peer-Reviewed Original ResearchConceptsTransverse aortic constrictionInsulin receptor substrate-1Left ventricular remodelingHeart failureVentricular remodelingCardiac hypertrophyTAC-induced LV hypertrophyPressure-overload cardiac hypertrophySevere LV dysfunctionInsulin receptor tyrosine kinase activityAkt1 activationReceptor tyrosine kinase activityLV dysfunctionLV hypertrophyWT miceInsulin resistanceLV remodelingAortic constrictionProinflammatory responseProtein kinase GInsulin receptor substrateReceptor substrate-1Kinomic profilingWT controlsTyrosine kinase activity
2013
Myocardial Loss of IRS1 and IRS2 Causes Heart Failure and Is Controlled by p38α MAPK During Insulin Resistance
Qi Y, Xu Z, Zhu Q, Thomas C, Kumar R, Feng H, Dostal D, White M, Baker K, Guo S. Myocardial Loss of IRS1 and IRS2 Causes Heart Failure and Is Controlled by p38α MAPK During Insulin Resistance. Diabetes 2013, 62: 3887-3900. PMID: 24159000, PMCID: PMC3806607, DOI: 10.2337/db13-0095.Peer-Reviewed Original ResearchConceptsIRS2 proteinGene expressionType 2 diabetesEnergy metabolism gene expressionInsulin resistanceMetabolic gene expressionBox class ODouble knockout miceHeart failureActivation of p38Chronic insulin exposureActivation of p38αMetabolism gene expressionProtein kinaseRole of IRS1Cellular metabolismMolecular mechanismsInsulin receptorNeonatal rat ventricular cardiomyocytesP38α MAPKCause heart failureCellular dysfunctionIRS1Myocardial insulin resistanceClass O
2009
The Irs1 Branch of the Insulin Signaling Cascade Plays a Dominant Role in Hepatic Nutrient Homeostasis
Guo S, Copps K, Dong X, Park S, Cheng Z, Pocai A, Rossetti L, Sajan M, Farese R, White M. The Irs1 Branch of the Insulin Signaling Cascade Plays a Dominant Role in Hepatic Nutrient Homeostasis. Molecular And Cellular Biology 2009, 29: 5070-5083. PMID: 19596788, PMCID: PMC2738277, DOI: 10.1128/mcb.00138-09.Peer-Reviewed Original ResearchConceptsHigh-fat dietHepatic nutrient homeostasisIntracerebroventricular insulin infusionSuppression of HGPImpaired glucose toleranceHyperinsulinemic-euglycemic clampHepatic insulin actionHepatic glucose productionHepatic Irs1Cre-loxP approachLivers of controlGlucose toleranceInsulin infusionInsulin Signaling CascadeInsulin sensitivityPostprandial hyperglycemiaGlucose homeostasisInsulin actionPrincipal mediatorGlucose productionLipogenic genesMiceTyrosine phosphorylationLiverIRS2
2007
Analysis of compensatory β-cell response in mice with combined mutations of Insr and Irs2
Kim J, Kido Y, Scherer P, White M, Accili D. Analysis of compensatory β-cell response in mice with combined mutations of Insr and Irs2. AJP Endocrinology And Metabolism 2007, 292: e1694-e1701. PMID: 17299086, DOI: 10.1152/ajpendo.00430.2006.Peer-Reviewed Original ResearchMeSH KeywordsAdaptation, PhysiologicalAdiponectinAdipose TissueAnimalsAnimals, NewbornDiabetes MellitusGlucose Tolerance TestGrowth DisordersHyperinsulinismInsulinInsulin Receptor Substrate ProteinsInsulin ResistanceInsulin-Secreting CellsIntracellular Signaling Peptides and ProteinsLeptinLiverMiceMice, Inbred StrainsMice, KnockoutMuscle, SkeletalMutationOrgan SizeOsmolar ConcentrationPhosphatidylinositol 3-KinasesPhosphoproteinsProto-Oncogene Proteins c-aktReceptor, InsulinConceptsBeta-cell dysfunctionBeta-cell massInsulin resistanceInsulin secretionType 2 diabetes resultsCompensatory insulin secretionBeta-cell responseImpaired insulin actionType 2 diabetesΒ-cell responseBeta-cell growthBeta-cell physiologyDiabetes resultsInsulin levelsMetabolic controlInsulin actionProgressive deteriorationDiabetesRobust increaseDysfunctionCompensatory responseMiceSecretionComprehensive treatmentINSR
2005
Reduced mitochondrial density and increased IRS-1 serine phosphorylation in muscle of insulin-resistant offspring of type 2 diabetic parents
Morino K, Petersen KF, Dufour S, Befroy D, Frattini J, Shatzkes N, Neschen S, White MF, Bilz S, Sono S, Pypaert M, Shulman GI. Reduced mitochondrial density and increased IRS-1 serine phosphorylation in muscle of insulin-resistant offspring of type 2 diabetic parents. Journal Of Clinical Investigation 2005, 115: 3587-3593. PMID: 16284649, PMCID: PMC1280967, DOI: 10.1172/jci25151.Peer-Reviewed Original ResearchMeSH KeywordsBiopsyBlood GlucoseBlotting, WesternBody Mass IndexBody WeightDiabetes Mellitus, Type 2DNA, MitochondrialFamily HealthFemaleGene Expression RegulationGlucose Clamp TechniqueGlucose Tolerance TestHumansHyperinsulinismImmunoprecipitationInsulinInsulin Receptor Substrate ProteinsInsulin ResistanceLipidsMaleMicroscopy, ElectronMicroscopy, Electron, TransmissionMitochondriaMusclesPhosphoproteinsPhosphorylationProtein Serine-Threonine KinasesReverse Transcriptase Polymerase Chain ReactionRNA, MessengerSerineSignal TransductionTime FactorsTranscription, GeneticTriglyceridesConceptsInsulin-resistant offspringIR offspringType 2 diabetesInsulin-stimulated muscle glucose uptakeType 2 diabetic parentsIntramyocellular lipid contentHyperinsulinemic-euglycemic clampMuscle glucose uptakeIRS-1 serine phosphorylationMuscle mitochondrial densityMitochondrial densityMuscle biopsy samplesSerine kinase cascadeInsulin-stimulated Akt activationDiabetic parentsInsulin resistanceControl subjectsBiopsy samplesGlucose uptakeLipid accumulationMitochondrial dysfunctionInsulin signalingAkt activationEarly defectsMuscleInsulin Receptor Substrate 2 Is Essential for Maturation and Survival of Photoreceptor Cells
Yi X, Schubert M, Peachey N, Suzuma K, Burks D, Kushner J, Suzuma I, Cahill C, Flint C, Dow M, Leshan R, King G, White M. Insulin Receptor Substrate 2 Is Essential for Maturation and Survival of Photoreceptor Cells. Journal Of Neuroscience 2005, 25: 1240-1248. PMID: 15689562, PMCID: PMC6725974, DOI: 10.1523/jneurosci.3664-04.2005.Peer-Reviewed Original ResearchMeSH KeywordsAge FactorsAnimalsAnimals, NewbornApoptosisCell SurvivalDiabetic RetinopathyEye ProteinsGene DeletionHomeodomain ProteinsHyperglycemiaHyperinsulinismInsulin Receptor Substrate ProteinsInsulin ResistanceInsulin-Like Growth Factor IIntracellular Signaling Peptides and ProteinsMiceMice, KnockoutPhosphoproteinsPhosphorylationPhotic StimulationPhotoreceptor CellsProtein Processing, Post-TranslationalProtein Serine-Threonine KinasesProto-Oncogene ProteinsProto-Oncogene Proteins c-aktRetinal Ganglion CellsSignal TransductionTrans-ActivatorsConceptsIrs2-/- micePhotoreceptor cellsPlexiform layerInsulin receptor substrate 2Insulin receptor substrateInsulin-like growth factor 1 receptorGrowth factor 1 receptorMost photoreceptor cellsInner plexiform layerOuter plexiform layerFactor 1 receptorFinal common pathwaySurvival of photoreceptorsNormal electrical functionMonths of ageWeeks of ageReceptor substrateCellular growthSubstrate 2Akt phosphorylationGanglion cellsIRS2 expressionPharmacological strategiesControl littermatesPhotoreceptor degenerationDeletion of Cdkn1b ameliorates hyperglycemia by maintaining compensatory hyperinsulinemia in diabetic mice
Uchida T, Nakamura T, Hashimoto N, Matsuda T, Kotani K, Sakaue H, Kido Y, Hayashi Y, Nakayama K, White M, Kasuga M. Deletion of Cdkn1b ameliorates hyperglycemia by maintaining compensatory hyperinsulinemia in diabetic mice. Nature Medicine 2005, 11: 175-182. PMID: 15685168, DOI: 10.1038/nm1187.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsCell Cycle ProteinsCell NucleusCyclin-Dependent Kinase Inhibitor p27Diabetes Mellitus, Type 2Disease Models, AnimalEnzyme InhibitorsHyperglycemiaHyperinsulinismInsulin Receptor Substrate ProteinsInsulin-Like Growth Factor IIntracellular Signaling Peptides and ProteinsIslets of LangerhansLeptinMiceMice, KnockoutPhosphoproteinsProtein Serine-Threonine KinasesProto-Oncogene ProteinsProto-Oncogene Proteins c-aktReceptors, Cell SurfaceReceptors, LeptinSignal TransductionTumor Suppressor ProteinsConceptsCyclin-dependent kinasesInsulin receptor substrate 2Cell cycle progressionPancreatic beta cell proliferationPotential new targetsCompensatory hyperinsulinemiaCycle progressionProtein p27Kip1Substrate 2Type 2 diabetes mellitusPancreatic beta cellsP27Kip1Beta-cell failureBeta-cell proliferationType 2 diabetesLong formNew targetsDeletionDiabetes mellitusDiabetic miceIslet massLeptin receptorBeta cellsAnimal modelsMice