2024
Oncogenic Kras induces spatiotemporally specific tissue deformation through converting pulsatile into sustained ERK activation
Xin T, Gallini S, Wei H, Gonzalez D, Matte-Martone C, Machida H, Fujiwara H, Pasolli H, Suozzi K, Gonzalez L, Regot S, Greco V. Oncogenic Kras induces spatiotemporally specific tissue deformation through converting pulsatile into sustained ERK activation. Nature Cell Biology 2024, 26: 859-867. PMID: 38689013, PMCID: PMC11519783, DOI: 10.1038/s41556-024-01413-y.Peer-Reviewed Original ResearchERK signalingStem cellsSquamous cell carcinomaHair folliclesOncogenic KRAS mutationsCell carcinomaKRAS mutationsSustained ERK activationERK signaling dynamicsOncogenic mutationsOncogenic KRASERK activationStem cell behaviorIntravital imagingAbnormal cell divisionModulates specific featuresKrasG12DTissue deformationSpatiotemporally specific mannerSustained ERK signalingMutationsLiving miceFolliclesTissue disruptionSingle-cell level
2023
Organ function is preserved despite reorganization of niche architecture in the hair follicle
Wei H, Du S, Parksong J, Pasolli H, Matte-Martone C, Regot S, Gonzalez L, Xin T, Greco V. Organ function is preserved despite reorganization of niche architecture in the hair follicle. Cell Stem Cell 2023, 30: 962-972.e6. PMID: 37419106, PMCID: PMC10362479, DOI: 10.1016/j.stem.2023.06.003.Peer-Reviewed Original ResearchConceptsNiche architectureDermal papilla fibroblastsDifferentiated lineagesHair follicle growthStereotypic architectureMultipotent progenitorsEpithelial progenitorsFunctional importanceNicheStem cellsFibroblast nicheProgenitorsPowerful modelIntravital imagingDermal papillaFibroblastsHair folliclesFollicle growthOrgan functionLineagesDifferentiationCrosstalkHairProliferationCellsLive imaging reveals chromatin compaction transitions and dynamic transcriptional bursting during stem cell differentiation in vivo
May D, Yun S, Gonzalez D, Park S, Chen Y, Lathrop E, Cai B, Xin T, Zhao H, Wang S, Gonzalez L, Cockburn K, Greco V. Live imaging reveals chromatin compaction transitions and dynamic transcriptional bursting during stem cell differentiation in vivo. ELife 2023, 12: e83444. PMID: 36880644, PMCID: PMC10027315, DOI: 10.7554/elife.83444.Peer-Reviewed Original ResearchConceptsStem cell differentiationCell differentiationStem cell compartmentCompaction changesChromatin compaction statesDynamic transcriptional statesCell compartmentChromatin architectureCell cycle statusChromatin rearrangementNascent RNATranscriptional burstingTranscriptional statesLive imagingTissue contextGene expressionDifferentiating cellsGlobal remodelingIndividual cellsCycle statusStem cellsDifferentiation statusDifferentiationCellsMorphological changes
2020
Cell-Cycle-Dependent ERK Signaling Dynamics Direct Fate Specification in the Mammalian Preimplantation Embryo
Pokrass MJ, Ryan KA, Xin T, Pielstick B, Timp W, Greco V, Regot S. Cell-Cycle-Dependent ERK Signaling Dynamics Direct Fate Specification in the Mammalian Preimplantation Embryo. Developmental Cell 2020, 55: 328-340.e5. PMID: 33091369, PMCID: PMC7658051, DOI: 10.1016/j.devcel.2020.09.013.Peer-Reviewed Original ResearchConceptsFate specificationPreimplantation developmentKinase translocation reporterMammalian preimplantation embryosInner cell massEmbryonic stem cellsSingle cellsDifferent cell typesMulticellular organismsEndogenous taggingDaughter cellsNanog proteinActive ERKNanog levelsERK activityGene expressionPreimplantation embryosCell cycleTrophectoderm cellsERK inhibitionCell typesStem cellsLive embryosCell massEmbryos
2019
Hair follicle regeneration suppresses Ras-driven oncogenic growth
Pineda CM, Gonzalez DG, Matte-Martone C, Boucher J, Lathrop E, Gallini S, Fons NR, Xin T, Tai K, Marsh E, Nguyen DX, Suozzi KC, Beronja S, Greco V. Hair follicle regeneration suppresses Ras-driven oncogenic growth. Journal Of Cell Biology 2019, 218: 3212-3222. PMID: 31488583, PMCID: PMC6781447, DOI: 10.1083/jcb.201907178.Peer-Reviewed Original ResearchConceptsHair folliclesHras mutationsOncogenic growthHair follicle stem cellsSkin hair folliclesTumor developmentFollicle stem cellsHair follicle regenerationSkin epitheliumSecondary mutationsBenign outgrowthFolliclesStem cellsTissueCertain tissuesFollicle regenerationCellsContinuous tissueWild-type neighborsDistinct mechanismsDifferent outcomesMutationsEnhanced capacityInjury
2018
Flexible fate determination ensures robust differentiation in the hair follicle
Xin T, Gonzalez D, Rompolas P, Greco V. Flexible fate determination ensures robust differentiation in the hair follicle. Nature Cell Biology 2018, 20: 1361-1369. PMID: 30420661, PMCID: PMC6314017, DOI: 10.1038/s41556-018-0232-y.Peer-Reviewed Original ResearchConceptsSingle-cell levelStem cellsStem cell differentiationGerm stem cellsTissue architectureMultiple cell typesFate determinationDetermination mechanismTissue homeostasisSame stem cellsCommon progenitorDifferentiation outcomesDifferentiation stimuliDifferentiation lineageCell differentiationCell typesNormal differentiationWnt activationHair folliclesUnanticipated flexibilityDifferentiationRobust differentiationProgenitorsCellsUninjured conditionHomeostatic Epidermal Stem Cell Self-Renewal Is Driven by Local Differentiation
Mesa KR, Kawaguchi K, Cockburn K, Gonzalez D, Boucher J, Xin T, Klein AM, Greco V. Homeostatic Epidermal Stem Cell Self-Renewal Is Driven by Local Differentiation. Cell Stem Cell 2018, 23: 677-686.e4. PMID: 30269903, PMCID: PMC6214709, DOI: 10.1016/j.stem.2018.09.005.Peer-Reviewed Original Research
2016
Hardwiring Stem Cell Communication through Tissue Structure
Xin T, Greco V, Myung P. Hardwiring Stem Cell Communication through Tissue Structure. Cell 2016, 164: 1212-1225. PMID: 26967287, PMCID: PMC4805424, DOI: 10.1016/j.cell.2016.02.041.Peer-Reviewed Original Research
2014
Evidence for Chromatin-Remodeling Complex PBAP-Controlled Maintenance of the Drosophila Ovarian Germline Stem Cells
He J, Xuan T, Xin T, An H, Wang J, Zhao G, Li M. Evidence for Chromatin-Remodeling Complex PBAP-Controlled Maintenance of the Drosophila Ovarian Germline Stem Cells. PLOS ONE 2014, 9: e103473. PMID: 25068272, PMCID: PMC4113433, DOI: 10.1371/journal.pone.0103473.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAnimals, Genetically ModifiedCell Cycle ProteinsCell DifferentiationChromatin Assembly and DisassemblyChromosomal Proteins, Non-HistoneDrosophila melanogasterDrosophila ProteinsFemaleGene ExpressionGreen Fluorescent ProteinsMicroscopy, ConfocalMutationOvaryOvumProtein BindingReverse Transcriptase Polymerase Chain ReactionRNA InterferenceTrans-ActivatorsTranscription FactorsConceptsGermline stem cellsGermline differentiationFate regulationDrosophila ovarian germline stem cellsSWI/SNF chromatin-remodeling complexOvarian germline stem cellsSWI/SNF complexStem cell fate regulationComplex-specific subunitsChromatin-remodeling complexCell fate regulationGenetic interaction testsStem cellsGSC fateGSC lossBAP complexDrosophila oogenesisMutant phenotypeSNF complexGSC maintenanceBRM functionRegulatory machineryEpigenetic regulationProtein complexesATPase subunits
2013
The Drosophila putative histone acetyltransferase Enok maintains female germline stem cells through regulating Bruno and the niche
Xin T, Xuan T, Tan J, Li M, Zhao G, Li M. The Drosophila putative histone acetyltransferase Enok maintains female germline stem cells through regulating Bruno and the niche. Developmental Biology 2013, 384: 1-12. PMID: 24120347, DOI: 10.1016/j.ydbio.2013.10.001.Peer-Reviewed Original ResearchConceptsGermline stem cellsGSC maintenanceFate regulationEpigenetic mechanismsDrosophila ovarian germline stem cellsStem cellsOvarian germline stem cellsFemale germline stem cellsStem cell fate regulationCell fate regulationRNA binding proteinCell-autonomous roleAdult stem cellsGSC lossPutative histoneEnokEpigenetic regulationNiche maintenanceDaughter cellsHistone acetyltransferaseMaintenance defectsEctopic expressionMutant allelesBinding proteinMolecular studiesdBre1/dSet1-dependent pathway for histone H3K4 trimethylation has essential roles in controlling germline stem cell maintenance and germ cell differentiation in the Drosophila ovary
Xuan T, Xin T, He J, Tan J, Gao Y, Feng S, He L, Zhao G, Li M. dBre1/dSet1-dependent pathway for histone H3K4 trimethylation has essential roles in controlling germline stem cell maintenance and germ cell differentiation in the Drosophila ovary. Developmental Biology 2013, 379: 167-181. PMID: 23624310, DOI: 10.1016/j.ydbio.2013.04.015.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsApoptosis Regulatory ProteinsCell DifferentiationDNA PrimersDrosophila melanogasterDrosophila ProteinsEpigenesis, GeneticFemaleGerm CellsHistone MethyltransferasesHistone-Lysine N-MethyltransferaseHistonesMethylationMicroscopy, FluorescenceOvaryReal-Time Polymerase Chain ReactionRNA InterferenceStatistics, NonparametricStem Cell NicheStem CellsUbiquitin-Protein LigasesConceptsGermline stem cellsGerm cell differentiationStem cell nicheCell differentiationDrosophila ovaryGSC maintenanceDrosophila ovarian germline stem cellsCell nicheGermline stem cell maintenanceOvarian germline stem cellsCell fate regulationStem cell maintenanceHistone H3K4 trimethylationE3 ubiquitin ligaseStem cellsSingle germ cellEscort cellsGSC lossGSC regulationChromatin remodelingMutant ovariesH3K4 methylationHistone modificationsFate regulationH3K4 trimethylation