2020
Pyruvate Kinase Controls Signal Strength in the Insulin Secretory Pathway
Lewandowski SL, Cardone RL, Foster HR, Ho T, Potapenko E, Poudel C, VanDeusen HR, Sdao SM, Alves TC, Zhao X, Capozzi ME, de Souza AH, Jahan I, Thomas CJ, Nunemaker CS, Davis DB, Campbell JE, Kibbey RG, Merrins MJ. Pyruvate Kinase Controls Signal Strength in the Insulin Secretory Pathway. Cell Metabolism 2020, 32: 736-750.e5. PMID: 33147484, PMCID: PMC7685238, DOI: 10.1016/j.cmet.2020.10.007.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsCell LineHumansInsulinInsulin SecretionMaleMiceMice, Inbred C57BLPyruvate KinaseConceptsPyruvate kinaseATP/ADPΒ-cell metabolismAppropriate insulin secretionPotential therapeutic routeSecretory pathwayMitochondrial fuelsPancreatic β-cellsInsulin secretory pathwayOxidative phosphorylationCell metabolismNutrient metabolismPhosphoenolpyruvateCell sensingPK activatorΒ-cellsCell functionInsulin secretionPK activityOxidative functionMembrane depolarizationMitochondriaPK activationΒ-cell functionADPMulti-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 ResearchMeSH KeywordsAnimalsHomeostasisInsulinMaleMiceMice, Inbred C57BLMice, KnockoutMitochondriaPhosphoenolpyruvatePyruvate KinaseRatsRats, Sprague-DawleyConceptsInsulin 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 PEPCKSecretionHomeostasisEndocrine-Exocrine Signaling Drives Obesity-Associated Pancreatic Ductal Adenocarcinoma
Chung KM, Singh J, Lawres L, Dorans KJ, Garcia C, Burkhardt DB, Robbins R, Bhutkar A, Cardone R, Zhao X, Babic A, Vayrynen SA, Dias Costa A, Nowak JA, Chang DT, Dunne RF, Hezel AF, Koong AC, Wilhelm JJ, Bellin MD, Nylander V, Gloyn AL, McCarthy MI, Kibbey RG, Krishnaswamy S, Wolpin BM, Jacks T, Fuchs CS, Muzumdar MD. Endocrine-Exocrine Signaling Drives Obesity-Associated Pancreatic Ductal Adenocarcinoma. Cell 2020, 181: 832-847.e18. PMID: 32304665, PMCID: PMC7266008, DOI: 10.1016/j.cell.2020.03.062.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsCarcinogenesisCarcinoma, Pancreatic DuctalCell LineCell Line, TumorCell Transformation, NeoplasticDisease Models, AnimalDisease ProgressionEndocrine CellsExocrine GlandsFemaleGene Expression Regulation, NeoplasticHumansMaleMiceMice, Inbred C57BLMutationObesityPancreatic NeoplasmsSignal TransductionTumor MicroenvironmentConceptsPancreatic ductal adenocarcinomaPDAC progressionDuctal adenocarcinomaMajor modifiable risk factorModifiable risk factorsBeta cell expressionObesity-associated changesAutochthonous mouse modelPancreatic ductal tumorigenesisDriver gene mutationsPeptide hormone cholecystokininRisk factorsPDAC developmentMouse modelObesityHormone cholecystokininOncogenic KrasCell expressionTumor microenvironmentDietary inductionCancer developmentGene mutationsReversible roleMurine samplesProgression
2019
Mitochondrial Proton Leak Regulated by Cyclophilin D Elevates Insulin Secretion in Islets at Nonstimulatory Glucose Levels
Taddeo EP, Alsabeeh N, Baghdasarian S, Wikstrom JD, Ritou E, Sereda S, Erion K, Li J, Stiles L, Abdulla M, Swanson Z, Wilhelm J, Bellin MD, Kibbey RG, Liesa M, Shirihai O. Mitochondrial Proton Leak Regulated by Cyclophilin D Elevates Insulin Secretion in Islets at Nonstimulatory Glucose Levels. Diabetes 2019, 69: 131-145. PMID: 31740442, PMCID: PMC6971491, DOI: 10.2337/db19-0379.Peer-Reviewed Original ResearchConceptsType 2 diabetesInsulin secretionInsulin resistanceFree fatty acidsNonesterified free fatty acidsGlucose-stimulated insulin secretionPrediabetic stateInsulin hypersecretionObese subjectsFatty acidsObese miceLean miceGlucose levelsHuman isletsPancreatic isletsΒ-cellsIsletsProton leakSecretionHyperinsulinemiaProgressive increaseDiabetesMiceMitochondrial proton leakLeak
2017
Pathogenesis of hypothyroidism-induced NAFLD is driven by intra- and extrahepatic mechanisms
Ferrandino G, Kaspari RR, Spadaro O, Reyna-Neyra A, Perry RJ, Cardone R, Kibbey RG, Shulman GI, Dixit VD, Carrasco N. Pathogenesis of hypothyroidism-induced NAFLD is driven by intra- and extrahepatic mechanisms. Proceedings Of The National Academy Of Sciences Of The United States Of America 2017, 114: e9172-e9180. PMID: 29073114, PMCID: PMC5664516, DOI: 10.1073/pnas.1707797114.Peer-Reviewed Original ResearchConceptsNonalcoholic fatty liver diseaseDe novo lipogenesisAdipose tissue lipolysisHepatic insulin resistanceThyroid hormonesHypothyroid miceImpaired suppressionInsulin resistanceTissue lipolysisInsulin secretionHigh thyroid-stimulating hormone levelsRegulation of THThyroid-stimulating hormone levelsLipid utilizationFatty liver diseaseSerum glucose levelsEndogenous glucose productionLow thyroid hormoneFatty acidsHepatic lipid utilizationLiver diseaseSevere hypothyroidismHormone levelsProfound suppressionGlucose levels