2022
Distinct subcellular localisation of intramyocellular lipids and reduced PKCε/PKCθ activity preserve muscle insulin sensitivity in exercise-trained mice
Gaspar R, Lyu K, Hubbard B, Leitner B, Luukkonen P, Hirabara S, Sakuma I, Nasiri A, Zhang D, Kahn M, Cline G, Pauli J, Perry R, Petersen K, Shulman G. Distinct subcellular localisation of intramyocellular lipids and reduced PKCε/PKCθ activity preserve muscle insulin sensitivity in exercise-trained mice. Diabetologia 2022, 66: 567-578. PMID: 36456864, PMCID: PMC11194860, DOI: 10.1007/s00125-022-05838-8.Peer-Reviewed Original ResearchConceptsProtein kinase CsSubcellular compartmentsDistinct subcellular localisationMuscle insulin sensitivityMultiple subcellular compartmentsInsulin receptor kinaseNovel protein kinase CsActivation of PKCεSubcellular localisationPKCθ translocationReceptor kinasePlasma membraneSubcellular distributionTriacylglycerol contentCrucial pathwaysIntramuscular triacylglycerol contentRC miceDiacylglycerolConclusions/interpretationThese resultsPKCεPM compartmentPhosphorylationMuscle triacylglycerol contentSkeletal muscleRecent findings
2019
Anti‐inflammatory effects of oestrogen mediate the sexual dimorphic response to lipid‐induced insulin resistance
Camporez JP, Lyu K, Goldberg EL, Zhang D, Cline GW, Jurczak MJ, Dixit VD, Petersen KF, Shulman GI. Anti‐inflammatory effects of oestrogen mediate the sexual dimorphic response to lipid‐induced insulin resistance. The Journal Of Physiology 2019, 597: 3885-3903. PMID: 31206703, PMCID: PMC6876753, DOI: 10.1113/jp277270.Peer-Reviewed Original ResearchConceptsObesity-induced insulin resistanceHigh-fat dietEctopic lipid contentWhite adipose tissue lipolysisInsulin resistanceAdipose tissue lipolysisMale miceInsulin sensitivityFemale miceInsulin-stimulated suppressionWAT inflammationTissue lipolysisRodent studiesTumor necrosis factor αWhole-body insulin sensitivityLipid-induced insulin resistanceMetabolic homeostasisAge-matched menInterleukin-6 concentrationsSkeletal muscleAnti-inflammatory effectsType 2 diabetesInsulin-mediated suppressionSexual dimorphic responseNecrosis factor α