2021
Polycomb complexes redundantly maintain epidermal stem cell identity during development
Cohen I, Bar C, Liu H, Valdes VJ, Zhao D, Galbo PM, Silva JM, Koseki H, Zheng D, Ezhkova E. Polycomb complexes redundantly maintain epidermal stem cell identity during development. Genes & Development 2021, 35: 354-366. PMID: 33602871, PMCID: PMC7919412, DOI: 10.1101/gad.345363.120.Peer-Reviewed Original ResearchConceptsFunctional redundancyTranscription factorsRepressive chromatin domainsStem cell identityEpidermal stem cellsStrong derepressionEpidermal identityPolycomb complexesChromatin domainsDevelopmental regulatorsIdentity genesPRC2 functionGene repressionGenomic bindingCell identityMolecular dissectionEpidermal progenitorsLineage identityPRC2PRC1Ectopic expressionSevere defectsEpidermal stratificationPhysiological significanceStem cells
2016
Polycomb-Mediated Repression and Sonic Hedgehog Signaling Interact to Regulate Merkel Cell Specification during Skin Development
Perdigoto CN, Dauber KL, Bar C, Tsai PC, Valdes VJ, Cohen I, Santoriello FJ, Zhao D, Zheng D, Hsu YC, Ezhkova E. Polycomb-Mediated Repression and Sonic Hedgehog Signaling Interact to Regulate Merkel Cell Specification during Skin Development. PLOS Genetics 2016, 12: e1006151. PMID: 27414999, PMCID: PMC4944976, DOI: 10.1371/journal.pgen.1006151.Peer-Reviewed Original ResearchConceptsMerkel cell specificationCell specificationPrimary hair folliclesLoss of PolycombImportance of ShhCell differentiation programHair follicle functionSonic hedgehog (Shh) signalingPRC2 targetsSpecialized keratinocytesEpidermal progenitorsDevelopmental programHair folliclesEpigenetic processesDifferentiation programHedgehog signalingShh ligandMature Merkel cellsShh signalingSkin developmentMurine dorsal skinEpidermal cellsMerkel cellsPRC2 lossCell formation