2017
Endotoxemia-mediated activation of acetyltransferase P300 impairs insulin signaling in obesity
Cao J, Peng J, An H, He Q, Boronina T, Guo S, White M, Cole P, He L. Endotoxemia-mediated activation of acetyltransferase P300 impairs insulin signaling in obesity. Nature Communications 2017, 8: 131. PMID: 28743992, PMCID: PMC5526866, DOI: 10.1038/s41467-017-00163-w.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsCell Line, TumorE1A-Associated p300 ProteinEndoplasmic Reticulum StressEndotoxemiaGene Expression ProfilingImmunoblottingInsulinInsulin ResistanceLipopolysaccharidesLiverMaleMembrane ProteinsMice, Inbred C57BLMice, ObeseObesityProtein Serine-Threonine KinasesReceptor, InsulinSignal TransductionX-Box Binding Protein 1ConceptsInsulin resistanceP300 acetyltransferase activityHigh-fat diet-fedChronic low-grade inflammationObese ob/ob miceOb/ob miceLow-grade inflammationDiet-induced obesityAcetyltransferase activityElevated plasma concentrationsPromising therapeutic targetCytoplasm of hepatocytesEndoplasmic reticulum stressObese patientsObese miceInsulin sensitivityIntestinal permeabilityOb micePlasma concentrationsDisrupts insulinTherapeutic targetImpairs insulinPharmacological inhibitionGlucose productionObesity
2013
IRS1Ser307 phosphorylation does not mediate mTORC1-induced insulin resistance
Herrema H, Lee J, Zhou Y, Copps K, White M, Ozcan U. IRS1Ser307 phosphorylation does not mediate mTORC1-induced insulin resistance. Biochemical And Biophysical Research Communications 2013, 443: 689-693. PMID: 24333417, PMCID: PMC3926104, DOI: 10.1016/j.bbrc.2013.12.023.Peer-Reviewed Original ResearchConceptsInsulin resistanceGlucose intoleranceInsulin sensitivityImpaired insulin receptorStress-induced insulin resistanceRapamycin complex 1 (mTORC1) activityPhosphorylation of IRS1Endoplasmic reticulum stressDiabetic miceER stress-induced insulin resistanceMammalian targetIRS1 phosphorylationReticulum stressMiceIntoleranceInsulin receptorVivoSer307