2023
A defect in mitochondrial fatty acid synthesis impairs iron metabolism and causes elevated ceramide levels
Dutta D, Kanca O, Byeon S, Marcogliese P, Zuo Z, Shridharan R, Park J, Lin G, Ge M, Heimer G, Kohler J, Wheeler M, Kaipparettu B, Pandey A, Bellen H. A defect in mitochondrial fatty acid synthesis impairs iron metabolism and causes elevated ceramide levels. Nature Metabolism 2023, 5: 1595-1614. PMID: 37653044, PMCID: PMC11151872, DOI: 10.1038/s42255-023-00873-0.Peer-Reviewed Original ResearchConceptsFatty acid synthesisFe-S cluster biogenesisMitochondrial fatty acid synthesisCeramide levelsMost eukaryotic cellsElevated ceramide levelsIron metabolismCluster biogenesisEukaryotic cellsLoss of functionCellular lipidomeEnoyl coenzymeNeurodegenerative phenotypeIron homeostasisHuman-derived fibroblastsMechanistic linkAcid synthesisCeramideMECRMetabolismNeurodegenerationMtFASBiogenesisLast stepMitochondria
2022
Loss of IRF2BPL impairs neuronal maintenance through excess Wnt signaling
Marcogliese P, Dutta D, Ray S, Dang N, Zuo Z, Wang Y, Lu D, Fazal F, Ravenscroft T, Chung H, Kanca O, Wan J, Douine E, Network U, Pena L, Yamamoto S, Nelson S, Might M, Meyer K, Yeo N, Bellen H. Loss of IRF2BPL impairs neuronal maintenance through excess Wnt signaling. Science Advances 2022, 8: eabl5613. PMID: 35044823, PMCID: PMC8769555, DOI: 10.1126/sciadv.abl5613.Peer-Reviewed Original ResearchConceptsAxonal lossPatient-derived astrocytesChildhood-onset neurodegenerative disordersNeuronal depletionNeural dysfunctionNeuronal expressionNeurological defectsPharmacological inhibitionNeurodegenerative disordersNeuronal maintenanceNeurological phenotypeWnt antagonistsDownstream signalingIRF2BPLBinding proteinInhibitionWntSignalingWnt transcriptionAstrocytesDysfunctionAntagonistBrain
2019
Loss of Oxidation Resistance 1, OXR1, Is Associated with an Autosomal-Recessive Neurological Disease with Cerebellar Atrophy and Lysosomal Dysfunction
Wang J, Rousseau J, Kim E, Ehresmann S, Cheng Y, Duraine L, Zuo Z, Park Y, Li-Kroeger D, Bi W, Wong L, Rosenfeld J, Gleeson J, Faqeih E, Alkuraya F, Wierenga K, Chen J, Afenjar A, Nava C, Doummar D, Keren B, Juusola J, Grompe M, Bellen H, Campeau P. Loss of Oxidation Resistance 1, OXR1, Is Associated with an Autosomal-Recessive Neurological Disease with Cerebellar Atrophy and Lysosomal Dysfunction. American Journal Of Human Genetics 2019, 105: 1237-1253. PMID: 31785787, PMCID: PMC6904826, DOI: 10.1016/j.ajhg.2019.11.002.Peer-Reviewed Original Research
2017
Clinically severe CACNA1A alleles affect synaptic function and neurodegeneration differentially
Luo X, Rosenfeld J, Yamamoto S, Harel T, Zuo Z, Hall M, Wierenga K, Pastore M, Bartholomew D, Delgado M, Rotenberg J, Lewis R, Emrick L, Bacino C, Eldomery M, Coban Akdemir Z, Xia F, Yang Y, Lalani S, Lotze T, Lupski J, Lee B, Bellen H, Wangler M, . Clinically severe CACNA1A alleles affect synaptic function and neurodegeneration differentially. PLOS Genetics 2017, 13: e1006905. PMID: 28742085, PMCID: PMC5557584, DOI: 10.1371/journal.pgen.1006905.Peer-Reviewed Original ResearchMeSH KeywordsAllelesAnimalsAnimals, Genetically ModifiedCalcium ChannelsCerebellar AtaxiaChildChild, PreschoolDrosophila melanogasterFemaleGenome, HumanGenome-Wide Association StudyHumansMaleMicroscopy, Electron, TransmissionMutation, MissenseNeurodegenerative DiseasesNeuroimagingPhenotypePoint MutationConceptsNeurodegenerative phenotypeGenomic rescue constructsS4 transmembrane segmentRescue constructTransmembrane segmentsFunction phenotypesLoss of functionMissense allelesFunction allelesWild typeGlobal developmental delayToxic gainMutant clonesDominant mutationsDevelopmental delayPoint mutationsDrosophilaFunctional impactPhenotypeQ-type voltage-dependent Ca2Early-onset developmental delayNeurological phenotypeAllelesSynaptic functionNovel variants