2017
An Exportin-1–dependent microRNA biogenesis pathway during human cell quiescence
Martinez I, Hayes KE, Barr JA, Harold AD, Xie M, Bukhari SIA, Vasudevan S, Steitz JA, DiMaio D. An Exportin-1–dependent microRNA biogenesis pathway during human cell quiescence. Proceedings Of The National Academy Of Sciences Of The United States Of America 2017, 114: e4961-e4970. PMID: 28584122, PMCID: PMC5488920, DOI: 10.1073/pnas.1618732114.Peer-Reviewed Original ResearchConceptsBiogenesis pathwayExportin 1Exportin-5Canonical miRNA biogenesis pathwayCanonical miRNA biogenesisTrimethylguanosine synthase 1MicroRNA biogenesis pathwayMiRNA biogenesis pathwayMiRNA processing pathwayStem cell biologyCellular growth arrestGroup of miRNAsExpression of miRNAsPrimary human fibroblastsMiRNA biogenesisPrimary miRNAsCellular quiescenceTissue homeostasisCell biologyProliferative arrestSpecific miRNAsCell quiescenceGrowth arrestBiogenesisMiRNAs
2015
The host Integrator complex acts in transcription-independent maturation of herpesvirus microRNA 3′ ends
Xie M, Zhang W, Shu MD, Xu A, Lenis DA, DiMaio D, Steitz JA. The host Integrator complex acts in transcription-independent maturation of herpesvirus microRNA 3′ ends. Genes & Development 2015, 29: 1552-1564. PMID: 26220997, PMCID: PMC4526738, DOI: 10.1101/gad.266973.115.Peer-Reviewed Original ResearchConceptsEnd processing signalsSmall nuclear RNAProximity ligation assayEnd processingPre-miRNAsHerpesvirus saimiriPre-miRNA hairpinsRNA-protein interactionsSitu proximity ligation assayIntegrator complexMiRNA 3MiRNA biogenesisSnRNA 3Primary miRNAMiRNA hairpinsIntegrator activityNuclear RNASequence downstreamOncogenic γ-herpesvirusesRescue experimentsLigation assayVivo knockdownComplex actsΓ-herpesvirusesHairpin
2013
Phosphorylation of DGCR8 Increases Its Intracellular Stability and Induces a Progrowth miRNA Profile
Herbert KM, Pimienta G, DeGregorio SJ, Alexandrov A, Steitz JA. Phosphorylation of DGCR8 Increases Its Intracellular Stability and Induces a Progrowth miRNA Profile. Cell Reports 2013, 5: 1070-1081. PMID: 24239349, PMCID: PMC3892995, DOI: 10.1016/j.celrep.2013.10.017.Peer-Reviewed Original ResearchConceptsMicroprocessor complexRNA-binding proteinRNase III enzymeInhibition of phosphatasesStem-loop structureERK/MAPKSpecific processing activityMiRNA expression profilesExtracellular cuesMiRNA biogenesisDrosha proteinPhosphorylation sitesPrimary miRNAMammalian cellsProtein stabilityExpression profilesDGCR8Intracellular stabilityHeLa cellsCellular levelMiRNA profilesPhosphorylationMRNA levelsProteinCells
2011
A Primate Herpesvirus Uses the Integrator Complex to Generate Viral MicroRNAs
Cazalla D, Xie M, Steitz JA. A Primate Herpesvirus Uses the Integrator Complex to Generate Viral MicroRNAs. Molecular Cell 2011, 43: 982-992. PMID: 21925386, PMCID: PMC3176678, DOI: 10.1016/j.molcel.2011.07.025.Peer-Reviewed Original ResearchConceptsEnd processing signalsHerpesvirus saimiriMature viral miRNAsPre-miRNA hairpinsCis-acting elementsMarmoset T cellsIntegrator complexAGO proteinsMiRNA biogenesisMicroprocessor complexU RNAExportin-5Noncoding RNAsViral miRNAsProcessing assaysHost miRNAsDeep sequencingViral noncoding RNAsProtein componentsComplex cleavesHairpin structureHSURsPrimate herpesvirusesMiRNAsRNA
2009
Subnuclear compartmentalization of transiently expressed polyadenylated pri-microRNAs: Processing at transcription sites or accumulation in SC35 foci
Pawlicki JM, Steitz JA. Subnuclear compartmentalization of transiently expressed polyadenylated pri-microRNAs: Processing at transcription sites or accumulation in SC35 foci. Cell Cycle 2009, 8: 345-356. PMID: 19177009, PMCID: PMC3004524, DOI: 10.4161/cc.8.3.7494.Peer-Reviewed Original ResearchConceptsPri-miRNA processingPri-miRNAsTranscription sitesPrimary miRNA transcriptsPri-miRNA transcriptsPre-miRNA hairpinsRNA polymerase IIASF/SF2Splicing factor SC35Target messenger RNAsNumber of proteinsMiRNA biogenesisMiRNA transcriptsNuclear organizationMRNA metabolismPolymerase IINuclear fociProlyl isomeraseFactor SC35Subnuclear compartmentalizationPri-microRNAsMammalian cellsSC35 domainsGene expressionSC35
2008
Primary microRNA transcript retention at sites of transcription leads to enhanced microRNA production
Pawlicki JM, Steitz JA. Primary microRNA transcript retention at sites of transcription leads to enhanced microRNA production. Journal Of Cell Biology 2008, 182: 61-76. PMID: 18625843, PMCID: PMC2447899, DOI: 10.1083/jcb.200803111.Peer-Reviewed Original ResearchMeSH KeywordsChromatinExonsHeLa CellsHumansIntronsMicroRNAsMRNA Cleavage and Polyadenylation FactorsNuclear ProteinsPolyadenylationRegulatory Sequences, Nucleic AcidRibonucleoproteinsRNA Polymerase IIIRNA Processing, Post-TranscriptionalRNA TransportRNA, MessengerRNA, ViralSequence DeletionSerine-Arginine Splicing FactorsSubcellular FractionsTranscription, GeneticConceptsPri-miRNAsTranscription sitesEndogenous pri-miRNAsPrimary miRNA transcriptsPri-miRNA processingSplicing factor SC35Viral RNA elementsHigh nuclear levelsMiRNA biogenesisMiRNA transcriptionMiRNA transcriptsNuclear stepsPrecursor miRNAsNuclear fociFactor SC35MicroRNA productionRNA elementsGene expressionTranscription leadNuclear fractionNuclear levelsTranscriptionMiRNAsProcessing signalsBiogenesis