2024
HEXIM1 Regulates Early Erythropoiesis and Participates in Multiple Complexes in Erythroid Cells
Rahman N, Abid D, Lv X, Murphy K, Getman M, McGrath K, Gallagher P, Narla M, Blanc L, Palis J, Mello S, Steiner L. HEXIM1 Regulates Early Erythropoiesis and Participates in Multiple Complexes in Erythroid Cells. Blood 2024, 144: 536. DOI: 10.1182/blood-2024-209259.Peer-Reviewed Original ResearchRNA polymerase IIErythroid gene expressionGene expressionTerminal erythroid maturationEarly erythropoiesisErythroid cellsErythroid maturationRegulation of gene expressionProgenitor cellsImpaired erythroid differentiationRNAPII pausingGenomic contextPolymerase IIRepress transcriptionSteady-state erythropoiesisErythroid progenitor cellsCD34+ HSPCsRegulatory domainBinding partnersErythropoiesis in vivoBlood cell countColony-forming cellsLow red blood cell countSubnuclear bodiesErythroid progenitor differentiation
2021
Regulation of RNA polymerase II activity is essential for terminal erythroid maturation
Murphy ZC, Murphy K, Myers J, Getman M, Couch T, Schulz VP, Lezon-Geyda K, Palumbo C, Yan H, Mohandas N, Gallagher PG, Steiner LA. Regulation of RNA polymerase II activity is essential for terminal erythroid maturation. Blood 2021, 138: 1740-1756. PMID: 34075391, PMCID: PMC8569412, DOI: 10.1182/blood.2020009903.Peer-Reviewed Original ResearchConceptsRNA polymerase IIRNA polymerase II activityTerminal erythroid maturationPolymerase II activityPolymerase IIErythroid maturationHuman erythroblastsGene expressionTerminal maturationII activityStage-specific regulationHistone posttranslational modificationsTransposase-accessible chromatinErythroid-specific genesAccumulation of heterochromatinHigh-throughput sequencingLevel of transcriptionLate-stage erythroblastsEssential biologic processesAccessible chromatinHistone marksTranscription elongationChromatin structureTranscriptional repressionChromatin immunoprecipitation
2019
Terminal Erythroid Maturation Is Associated with Dynamic Changes in the Abundance of Histone Marks Associated with Active Transcription Elongation and RNA Polymerase II Pausing
Murphy Z, Couch T, Lillis J, Getman M, Lezon-Geyda K, Schulz V, Narla M, Gallagher P, Steiner L. Terminal Erythroid Maturation Is Associated with Dynamic Changes in the Abundance of Histone Marks Associated with Active Transcription Elongation and RNA Polymerase II Pausing. Blood 2019, 134: 154. DOI: 10.1182/blood-2019-129561.Peer-Reviewed Original ResearchRNA polymerase II pausingTerminal erythroid maturationPol IIC-terminal domainErythroid maturationGene expressionTranscription elongationPosttranslational modificationsSpecific histone posttranslational modificationsPol II C-terminal domainRNA polymerase II pause releaseKey regulatorHistone H4 lysine 16 acetylationHistone H4 lysine 20Histone post-translational modificationsH4 lysine 16 acetylationHistone H3 lysine 79H4 lysine 20Histone posttranslational modificationsRNA Pol IIH3 lysine 79Multiple histone marksPost-translational modificationsTranscription start siteChIP-seq data
2015
The Histone Methyltransferase Setd8 Is Essential for Mammalian Erythropoiesis
Malik J, Getman M, Lillis J, Gallagher P, Steiner L. The Histone Methyltransferase Setd8 Is Essential for Mammalian Erythropoiesis. Blood 2015, 126: 3577. DOI: 10.1182/blood.v126.23.3577.3577.Peer-Reviewed Original ResearchCell cycle progressionNuclear condensationTranscriptional regulationMammalian erythropoiesisErythroid maturationGATA2 expressionErythroid cellsCycle progressionHistone H4 lysine 20Sole histone methyltransferaseGFP fusion proteinH4 lysine 20Histone methyltransferase Setd8Erythroid transcription factorsErythroid-specific genesEarly embryonic lethalityGlobal transcriptome analysisDNA damage responseMajority of transcriptsRNA-seq analysisCell cycle checkpointsKey regulatory regionsCommitted erythroid progenitorsErythro-myeloid progenitorsPrimary human erythroblasts