2020
Multi-Tissue Acceleration of the Mitochondrial Phosphoenolpyruvate Cycle Improves Whole-Body Metabolic Health
Abulizi A, Cardone RL, Stark R, Lewandowski SL, Zhao X, Hillion J, Ma L, Sehgal R, Alves TC, Thomas C, Kung C, Wang B, Siebel S, Andrews ZB, Mason GF, Rinehart J, Merrins MJ, Kibbey RG. Multi-Tissue Acceleration of the Mitochondrial Phosphoenolpyruvate Cycle Improves Whole-Body Metabolic Health. Cell Metabolism 2020, 32: 751-766.e11. PMID: 33147485, PMCID: PMC7679013, DOI: 10.1016/j.cmet.2020.10.006.Peer-Reviewed Original ResearchConceptsInsulin secretionInsulin sensitivityPK activatorWhole-body metabolic healthPK activationMetabolic homeostasisPeripheral insulin sensitivityHFD-fed ratsEndogenous glucose productionPreclinical rodent modelsHigher insulin contentPreclinical rationaleLiver fatMetabolic healthMarkers of differentiationIslet functionRodent modelsGlucose homeostasisInsulin contentPancreatic isletsGlucose productionGlucose turnoverMitochondrial PEPCKSecretionHomeostasis
2019
Distinct Hepatic PKA and CDK Signaling Pathways Control Activity-Independent Pyruvate Kinase Phosphorylation and Hepatic Glucose Production
Gassaway BM, Cardone RL, Padyana AK, Petersen MC, Judd ET, Hayes S, Tong S, Barber KW, Apostolidi M, Abulizi A, Sheetz JB, Kshitiz, Aerni HR, Gross S, Kung C, Samuel VT, Shulman GI, Kibbey RG, Rinehart J. Distinct Hepatic PKA and CDK Signaling Pathways Control Activity-Independent Pyruvate Kinase Phosphorylation and Hepatic Glucose Production. Cell Reports 2019, 29: 3394-3404.e9. PMID: 31825824, PMCID: PMC6951436, DOI: 10.1016/j.celrep.2019.11.009.Peer-Reviewed Original ResearchConceptsCyclin-dependent kinasesMetabolic control pointPhosphorylation sitesNuclear retentionCDK activityPKL activityDays high-fat dietKinase phosphorylationImportant enzymePyruvate kinaseHigh-fat dietS113KinaseEnzyme kineticsPhosphorylationAdditional control pointsRegulationGlucose productionHepatic glucose productionInsulin resistanceGlycolysisEnzymePKAPathwayActivity