2023
Targeted and selective knockout of the TLQP-21 neuropeptide unmasks its unique role in energy homeostasis
Sahu B, Razzoli M, McGonigle S, Pallais J, Nguyen M, Sadahiro M, Jiang C, Lin W, Kelley K, Rodriguez P, Mansk R, Cero C, Caviola G, Palanza P, Rao L, Beetch M, Alejandro E, Sham Y, Frontini A, Salton S, Bartolomucci A. Targeted and selective knockout of the TLQP-21 neuropeptide unmasks its unique role in energy homeostasis. Molecular Metabolism 2023, 76: 101781. PMID: 37482186, PMCID: PMC10400922, DOI: 10.1016/j.molmet.2023.101781.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsDietEnergy MetabolismHomeostasisMiceNeuropeptidesPeptide FragmentsPeptide HormonesConceptsGenetic engineering approachesUnique metabolic phenotypeMass spectrometry identificationPrecursor geneGel digestionGenetic lossTLQP-21Cleavage siteC-terminal arginineGenesMutant sequencesSelective knockoutEssential roleBiological constraintsMetabolic phenotypeMouse linesEnergy homeostasisComposite phenotypeMutant miceValuable resourceVGF gene
2016
Embryonic ablation of neuronal VGF increases energy expenditure and reduces body weight
Jiang C, Lin WJ, Sadahiro M, Shin AC, Buettner C, Salton SR. Embryonic ablation of neuronal VGF increases energy expenditure and reduces body weight. Neuropeptides 2016, 64: 75-83. PMID: 28024880, PMCID: PMC5478485, DOI: 10.1016/j.npep.2016.12.005.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsBody WeightDietEnergy MetabolismHypothalamusMiceNerve Growth FactorsNeuronsNeuropeptidesObesityConceptsVGF knockout miceKnockout miceBody weightPeripheral endocrineEnergy expenditureAdult miceVGF-derived peptide TLQP-21Peptide TLQP-21Diet-induced obesityEmbryonic CNS neuronsICV deliverySynapsin-CreAAV-CreTLQP-21Arcuate nucleusCNS neuronsVentromedial hypothalamusReduced adiposityFemale miceMale miceEmbryonic ablationAdult neuronsExcitatory neuronsHypermetabolic phenotypeEmbryonic neurons
2015
Role of VGF-Derived Carboxy-Terminal Peptides in Energy Balance and Reproduction: Analysis of “Humanized” Knockin Mice Expressing Full-Length or Truncated VGF
Sadahiro M, Erickson C, Lin WJ, Shin AC, Razzoli M, Jiang C, Fargali S, Gurney A, Kelley KA, Buettner C, Bartolomucci A, Salton SR. Role of VGF-Derived Carboxy-Terminal Peptides in Energy Balance and Reproduction: Analysis of “Humanized” Knockin Mice Expressing Full-Length or Truncated VGF. Endocrinology 2015, 156: 1724-1738. PMID: 25675362, PMCID: PMC4398760, DOI: 10.1210/en.2014-1826.Peer-Reviewed Original ResearchConceptsEnergy expenditureRole of VGFWild-type miceKnockin mouse modelGlucose toleranceFemale miceGlucose homeostasisMouse modelBody weightReproductive functionKnockin miceVGF peptidesMiceVGF proteinMetabolic phenotypeInfertile miceSingle nucleotide polymorphismsFat storageTerminal peptidesTargeted deletionCarboxy-terminal peptideVGFObesityCritical regulatorC-terminal region
2012
Role of Neurotrophins in the Development and Function of Neural Circuits That Regulate Energy Homeostasis
Fargali S, Sadahiro M, Jiang C, Frick AL, Indall T, Cogliani V, Welagen J, Lin WJ, Salton SR. Role of Neurotrophins in the Development and Function of Neural Circuits That Regulate Energy Homeostasis. Journal Of Molecular Neuroscience 2012, 48: 654-659. PMID: 22581449, PMCID: PMC3480664, DOI: 10.1007/s12031-012-9790-9.Peer-Reviewed Original ResearchMeSH KeywordsAdipose TissueAnimalsAutonomic Fibers, PostganglionicBasal MetabolismBrain StemCorticotropin-Releasing HormoneEatingEnergy MetabolismGene Expression RegulationGlucocorticoidsHomeostasisHumansHypothalamusNerve Growth FactorsNeural PathwaysNeuropeptidesReceptors, Nerve Growth FactorSignal TransductionSpinal CordSympathetic Nervous SystemConceptsNeurotrophic growth factorsNeurotrophic factorGrowth factorBrain-derived neurotrophic factorEnergy homeostasisRole of neurotrophinsSympathetic nervous systemPeripheral metabolic tissuesWhite adipose tissueNerve growth factorCiliary neurotrophic factorCentral nervous system developmentNeurotrophin-4/5Neurotrophin-3Neurotrophin familyNeuronal survivalNervous system developmentSpinal cordAdipose tissueNervous systemCircuit formationNeural circuitsMetabolic tissuesEnergy expenditureCritical gene products