2023
Female naïve human pluripotent stem cells carry X chromosomes with Xa-like and Xi-like folding conformations
Patterson B, Yang B, Tanaka Y, Kim K, Cakir B, Xiang Y, Kim J, Wang S, Park I. Female naïve human pluripotent stem cells carry X chromosomes with Xa-like and Xi-like folding conformations. Science Advances 2023, 9: eadf2245. PMID: 37540754, PMCID: PMC10403202, DOI: 10.1126/sciadv.adf2245.Peer-Reviewed Original ResearchConceptsNaïve human pluripotent stem cellsHuman pluripotent stem cellsX-chromosome inactivationX chromosomePluripotent stem cellsStem cellsNaïve human embryonic stem cellsX chromosome stateX chromosome statusInactive X chromosomeActive X chromosomeHuman embryonic stem cellsEarly embryonic cellsEmbryonic stem cellsUnique epigenetic regulationChromatin compactionGenomic resolutionEpigenetic regulationChromosome inactivationChromosome stateSomatic cellsEmbryonic cellsChromosomesChromosome statusCells
2021
Vulnerability of cholecystokinin-expressing GABAergic interneurons in the unilateral intrahippocampal kainate mouse model of temporal lobe epilepsy
Kang YJ, Clement EM, Park IH, Greenfield LJ, Smith BN, Lee SH. Vulnerability of cholecystokinin-expressing GABAergic interneurons in the unilateral intrahippocampal kainate mouse model of temporal lobe epilepsy. Experimental Neurology 2021, 342: 113724. PMID: 33915166, PMCID: PMC8192495, DOI: 10.1016/j.expneurol.2021.113724.Peer-Reviewed Original ResearchConceptsTemporal lobe epilepsyIntrahippocampal kainate mouse modelVentral CA1 regionEpileptic miceCA1 pyramidal cellsSclerotic hippocampusPyramidal cellsSham controlsSpontaneous seizuresLobe epilepsyCA1 regionMouse modelFrequency of IPSCsNetwork oscillationsRecurrent spontaneous seizuresNumber of boutonsHippocampal theta oscillationsIpsilateral hippocampusElectrical recordingsVentral hippocampusCA1 layerGABAergic interneuronsStratum pyramidaleDorsal hippocampusBehavioral comorbidities
2020
Mural Cell-Specific Deletion of Cerebral Cavernous Malformation 3 in the Brain Induces Cerebral Cavernous Malformations
Wang K, Zhang H, He Y, Jiang Q, Tanaka Y, Park IH, Pober JS, Min W, Zhou HJ. Mural Cell-Specific Deletion of Cerebral Cavernous Malformation 3 in the Brain Induces Cerebral Cavernous Malformations. Arteriosclerosis Thrombosis And Vascular Biology 2020, 40: 2171-2186. PMID: 32640906, DOI: 10.1161/atvbaha.120.314586.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsApoptosis Regulatory ProteinsBrainCell CommunicationCell MovementCells, CulturedCoculture TechniquesEndothelial CellsFemaleFocal AdhesionsGene DeletionGenetic Predisposition to DiseaseHemangioma, Cavernous, Central Nervous SystemHumansMaleMembrane ProteinsMice, KnockoutMicrovesselsMyocytes, Smooth MusclePaxillinPericytesPhenotypeProtein StabilityProto-Oncogene ProteinsSignal TransductionConceptsCerebral cavernous malformationsBrain mural cellsCCM lesionsMural cellsCavernous malformationsSevere brain hemorrhageCCM pathogenesisSmooth muscle cellsWeeks of ageCell-specific deletionMural cell coverageBrain pericytesBrain hemorrhageNeonatal stageBrain vasculatureLesionsEntire brainMuscle cellsCerebral cavernous malformation 3Endothelial cellsMicePericytesSpecific deletionAdhesion formationPathogenesisDysregulation of BRD4 Function Underlies the Functional Abnormalities of MeCP2 Mutant Neurons
Xiang Y, Tanaka Y, Patterson B, Hwang SM, Hysolli E, Cakir B, Kim KY, Wang W, Kang YJ, Clement EM, Zhong M, Lee SH, Cho YS, Patra P, Sullivan GJ, Weissman SM, Park IH. Dysregulation of BRD4 Function Underlies the Functional Abnormalities of MeCP2 Mutant Neurons. Molecular Cell 2020, 79: 84-98.e9. PMID: 32526163, PMCID: PMC7375197, DOI: 10.1016/j.molcel.2020.05.016.Peer-Reviewed Original ResearchConceptsMECP2 mutant neuronsEnhancer-promoter interactionsRett syndromeRTT-like phenotypesChromatin bindingMeCP2 functionMethyl-CpGAbnormal transcriptionRTT etiologyMutant neuronsBET inhibitorsPotential therapeutic opportunitiesMECP2 mutationsProtein 2Human brain organoidsFunctional phenotypeJQ1BRD4Therapeutic opportunitiesBrain organoidsFunction underliesMutationsPhenotypeHuman brain culturesCritical driverSynthetic Analyses of Single-Cell Transcriptomes from Multiple Brain Organoids and Fetal Brain
Tanaka Y, Cakir B, Xiang Y, Sullivan GJ, Park IH. Synthetic Analyses of Single-Cell Transcriptomes from Multiple Brain Organoids and Fetal Brain. Cell Reports 2020, 30: 1682-1689.e3. PMID: 32049002, PMCID: PMC7043376, DOI: 10.1016/j.celrep.2020.01.038.Peer-Reviewed Original Research
2018
Uhrf1 regulates active transcriptional marks at bivalent domains in pluripotent stem cells through Setd1a
Kim KY, Tanaka Y, Su J, Cakir B, Xiang Y, Patterson B, Ding J, Jung YW, Kim JH, Hysolli E, Lee H, Dajani R, Kim J, Zhong M, Lee JH, Skalnik D, Lim JM, Sullivan GJ, Wang J, Park IH. Uhrf1 regulates active transcriptional marks at bivalent domains in pluripotent stem cells through Setd1a. Nature Communications 2018, 9: 2583. PMID: 29968706, PMCID: PMC6030064, DOI: 10.1038/s41467-018-04818-0.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsCCAAT-Enhancer-Binding ProteinsCellular ReprogrammingCellular Reprogramming TechniquesChimeraDNA MethylationEpigenesis, GeneticFemaleFibroblastsGene Knockout TechniquesHEK293 CellsHistone CodeHistone-Lysine N-MethyltransferaseHistonesHumansMaleMesodermMiceMouse Embryonic Stem CellsNeural PlateNuclear ProteinsPrimary Cell CultureRecombinant ProteinsUbiquitin-Protein LigasesConceptsEmbryonic stem cellsUnique epigenetic statesBivalent histone modificationsRecruitment of DNMT1Bivalent histone marksCell typesDNA-binding proteinsSpecialized cell typesStem cellsPluripotent stem cellsTrithorax groupBivalent domainsMesoderm specificationCOMPASS complexHeterochromatin formationEpigenetic stateCell specificationHistone marksLineage specificationHistone modificationsEpigenetic regulationSpecific lineagesDNA methylationTranscriptional marksEpigenetic changes
2016
Single cell transcriptomics reveals unanticipated features of early hematopoietic precursors
Yang J, Tanaka Y, Seay M, Li Z, Jin J, Garmire LX, Zhu X, Taylor A, Li W, Euskirchen G, Halene S, Kluger Y, Snyder MP, Park IH, Pan X, Weissman SM. Single cell transcriptomics reveals unanticipated features of early hematopoietic precursors. Nucleic Acids Research 2016, 45: 1281-1296. PMID: 28003475, PMCID: PMC5388401, DOI: 10.1093/nar/gkw1214.Peer-Reviewed Original ResearchConceptsHematopoietic stem cellsPrecursor cellsInduction of anemiaInterferon response genesG2/M phaseEarly precursor cellsHomeostatic cellsStages of differentiationTranscription factorsSurface markersCell cycle progressionLong-term hematopoietic stem cellsSpecific augmentationAnemic miceMarked increaseEarly hematopoietic precursorsHematopoietic precursorsStem cellsCycle progressionM phaseSingle-cell transcriptomicsCellsCell differentiationHematopoietic stressLineage-specific transcription factors
2014
X Chromosome of Female Cells Shows Dynamic Changes in Status during Human Somatic Cell Reprogramming
Kim KY, Hysolli E, Tanaka Y, Wang B, Jung YW, Pan X, Weissman SM, Park IH. X Chromosome of Female Cells Shows Dynamic Changes in Status during Human Somatic Cell Reprogramming. Stem Cell Reports 2014, 2: 896-909. PMID: 24936474, PMCID: PMC4050354, DOI: 10.1016/j.stemcr.2014.04.003.Peer-Reviewed Original ResearchConceptsX chromosome stateInactive X chromosomeActive X chromosomeX chromosomeChromosome stateHuman somatic cell reprogrammingIPSC clonesSomatic cell reprogrammingX chromosome reactivationStem cellsEmbryonic stem cellsPluripotent stem cellsHuman iPSC clonesEpigenetic stateCell reprogrammingFemale iPSCsFemale cellsChromosomesHuman iPSCsParental cellsDisease modelingDynamic changesRobust reactivationIPSCsClones
2013
Transcriptional regulation in pluripotent stem cells by methyl CpG-binding protein 2 (MeCP2)
Tanaka Y, Kim KY, Zhong M, Pan X, Weissman SM, Park IH. Transcriptional regulation in pluripotent stem cells by methyl CpG-binding protein 2 (MeCP2). Human Molecular Genetics 2013, 23: 1045-1055. PMID: 24129406, PMCID: PMC3900111, DOI: 10.1093/hmg/ddt500.Peer-Reviewed Original ResearchConceptsPluripotent stem cellsMutant MECP2X chromosomeMethyl-CpGStem cellsGene expressionLong-range chromatin interactionsFundamental cellular physiologyRett syndromeMitochondrial membrane proteinInactive X chromosomeProtein 2Chromatin interactionsTranscriptional regulationTranscription regulatorsCellular physiologyTranscriptome analysisLoss of functionMembrane proteinsMeCP2 resultsDe novo mutationsRegulatory mechanismsMeCP2ChromosomesRTT patientsTransformation of somatic cells into stem cell‐like cells under a stromal niche
Lee ST, Gong SP, Yum KE, Lee EJ, Lee CH, Choi JH, Kim DY, Han H, Kim K, Hysolli E, Ahn JY, Park I, Han JY, Jeong J, Lim JM. Transformation of somatic cells into stem cell‐like cells under a stromal niche. The FASEB Journal 2013, 27: 2644-2656. PMID: 23580613, PMCID: PMC4050423, DOI: 10.1096/fj.12-223065.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsCell AggregationCell DedifferentiationCell FusionCells, CulturedChromosome AberrationsCoculture TechniquesEmbryo, MammalianEmbryonic Stem CellsFemaleFibroblastsGene Expression ProfilingInduced Pluripotent Stem CellsKaryotypingMiceMice, Inbred C57BLMice, Inbred CBAMice, Inbred DBAMice, Inbred ICRMicroscopy, Electron, TransmissionOligonucleotide Array Sequence AnalysisOvarySpecies SpecificityStem Cell NicheStem CellsConceptsEmbryonic stem cellsColony-forming fibroblastsParthenogenetic embryonic stem cellsSomatic cellsGenomic single nucleotide polymorphismsAcquisition of pluripotencySomatic cell plasticityPluripotency gene expressionStem cellsInner cell massStem cell-like cellsCell cycle-related proteinsPluripotent stem cellsSomatic genomeCycle-related proteinsGenomic plasticityCell-like cellsSingle nucleotide polymorphismsCell plasticityESC coloniesGenetic manipulationHeterologous recombinationEmbryonic fibroblastsImprinting patternGene expression
2012
Mutant induced pluripotent stem cell lines recapitulate aspects of TDP-43 proteinopathies and reveal cell-specific vulnerability
Bilican B, Serio A, Barmada SJ, Nishimura AL, Sullivan GJ, Carrasco M, Phatnani HP, Puddifoot CA, Story D, Fletcher J, Park IH, Friedman BA, Daley GQ, Wyllie DJ, Hardingham GE, Wilmut I, Finkbeiner S, Maniatis T, Shaw CE, Chandran S. Mutant induced pluripotent stem cell lines recapitulate aspects of TDP-43 proteinopathies and reveal cell-specific vulnerability. Proceedings Of The National Academy Of Sciences Of The United States Of America 2012, 109: 5803-5808. PMID: 22451909, PMCID: PMC3326463, DOI: 10.1073/pnas.1202922109.Peer-Reviewed Original ResearchConceptsAmyotrophic lateral sclerosisTDP-43 proteinopathyTDP-43Human neuronsTransactive response DNA binding proteinFrontotemporal lobar degenerationFamilial amyotrophic lateral sclerosisFunctional motor neuronsCell-specific vulnerabilityTDP-43 proteinDNA binding proteinPI3K pathwayCell-autonomous phenotypeMotor neuronsLateral sclerosisStem cell linesPluripotent stem cellsGeneration of iPSCsIdentification of mutationsPluripotent stem cell lineMutant neuronsNeuronsK pathwayElevated levelsDisease mechanisms
2011
Neuronal maturation defect in induced pluripotent stem cells from patients with Rett syndrome
Kim KY, Hysolli E, Park IH. Neuronal maturation defect in induced pluripotent stem cells from patients with Rett syndrome. Proceedings Of The National Academy Of Sciences Of The United States Of America 2011, 108: 14169-14174. PMID: 21807996, PMCID: PMC3161557, DOI: 10.1073/pnas.1018979108.Peer-Reviewed Original ResearchMeSH KeywordsAdultAmino Acid SequenceBase SequenceBiomarkersCell DifferentiationChildChild, PreschoolChromosomes, Human, XEmbryonic Stem CellsFemaleFibroblastsGene Expression RegulationHumansInduced Pluripotent Stem CellsKruppel-Like Factor 4Methyl-CpG-Binding Protein 2Molecular Sequence DataNeuronsRett SyndromeX Chromosome InactivationConceptsX chromosomePluripotent stem cellsSingle active X chromosomeRett syndromeActive X chromosomePathophysiology of RTTX-chromosome inactivationStem cellsInduced pluripotent stem cellsRTT fibroblastsMurine genetic modelsMolecular dissectionChromosome inactivationFactors OCT4Methyl-CpGRTT phenotypeNeuronal differentiationChromosomesPurposeful hand movementsNormal developmentRTT modelModel of RTTProtein 2Maturation defectsNeuronal maturation
2009
Generation of functional human hepatic endoderm from human induced pluripotent stem cells
Sullivan GJ, Hay DC, Park I, Fletcher J, Hannoun Z, Payne CM, Dalgetty D, Black JR, Ross JA, Samuel K, Wang G, Daley GQ, Lee J, Church GM, Forbes SJ, Iredale JP, Wilmut I. Generation of functional human hepatic endoderm from human induced pluripotent stem cells. Hepatology 2009, 51: 329-335. PMID: 19877180, PMCID: PMC2799548, DOI: 10.1002/hep.23335.Peer-Reviewed Original ResearchA role for Lin28 in primordial germ-cell development and germ-cell malignancy
West JA, Viswanathan SR, Yabuuchi A, Cunniff K, Takeuchi A, Park IH, Sero JE, Zhu H, Perez-Atayde A, Frazier AL, Surani MA, Daley GQ. A role for Lin28 in primordial germ-cell development and germ-cell malignancy. Nature 2009, 460: 909-913. PMID: 19578360, PMCID: PMC2729657, DOI: 10.1038/nature08210.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsCell DifferentiationCell LineChromosomal Proteins, Non-HistoneEmbryonic Stem CellsFemaleGene Expression Regulation, NeoplasticGerm CellsHumansMiceMice, Inbred C57BLNeoplasms, Germ Cell and EmbryonalPositive Regulatory Domain I-Binding Factor 1Repressor ProteinsRNA-Binding ProteinsTranscription FactorsTransgenes