2023
DNA methylation of the promoter region at the CREB1 binding site is a mechanism for the epigenetic regulation of brain-specific PKMζ
Pramio D, Vieceli F, Varella-Branco E, Goes C, Kobayashi G, da Silva Pelegrina D, de Moraes B, El Allam A, De Kumar B, Jara G, Farfel J, Bennett D, Kundu S, Viapiano M, Reis E, de Oliveira P, Dos Santos E Passos-Bueno M, Rothlin C, Ghosh S, Schechtman D. DNA methylation of the promoter region at the CREB1 binding site is a mechanism for the epigenetic regulation of brain-specific PKMζ. Biochimica Et Biophysica Acta (BBA) - Gene Regulatory Mechanisms 2023, 1866: 194909. PMID: 36682583, PMCID: PMC10037092, DOI: 10.1016/j.bbagrm.2023.194909.Peer-Reviewed Original ResearchConceptsInduced pluripotent stem cellsInternal promoterNeuronal differentiationEpigenetic mechanismsDNA methylationUpstream promoterProtein kinase C ζHuman neuronal differentiationSite-specific hypermethylationAberrant DNA hypermethylationPluripotent stem cellsEpigenetic regulationSame epigenetic mechanismsLong-term memory formationDNA hypermethylationDemethylated regionsEpigenetic factorsPromoter regionTissue specificityMolecular mechanismsPRKCZ geneDifferentiated neuronsPromoterProtein kinase M zetaLong-term potentiation
2021
Autocrine GMCSF Signaling Contributes to Growth of HER2+ Breast Leptomeningeal CarcinomatosisGMCSF Contributes to Breast Leptomeningeal Carcinomatosis
Ansari K, Bhan A, Saotome M, Tyagi A, De Kumar B, Chen C, Takaku M, Jandial R. Autocrine GMCSF Signaling Contributes to Growth of HER2+ Breast Leptomeningeal CarcinomatosisGMCSF Contributes to Breast Leptomeningeal Carcinomatosis. Cancer Research 2021, 81: 4723-4735. PMID: 34247146, PMCID: PMC8986153, DOI: 10.1158/0008-5472.can-21-0259.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAutocrine CommunicationBreast NeoplasmsCell Line, TumorCell ProliferationCell SurvivalDisease Models, AnimalGene ExpressionGranulocyte-Macrophage Colony-Stimulating FactorHumansMeningeal CarcinomatosisMiceOncogene ProteinsProtein Kinase InhibitorsReceptor, ErbB-2Signal TransductionXenograft Model Antitumor AssaysConceptsOligodendrocyte progenitor cellsLeptomeningeal carcinomatosisLC growthPan-Aurora kinase inhibitorKinase inhibitorsSuppression of HER2Growth of HER2Central nervous system cell typesProliferation of HER2Nervous system cell typesBreast cancer cellsPrimary HER2Targetable axisOminous complicationIntrathecal deliveryMolecular mechanismsTreatment optionsDire prognosisSpinal cordBreast cancerHER2LC developmentLeptomeningesLC/MS-MSCarcinomatosis
2020
Analysis of DNA Methylation Changes in Mice Mediated by Early‐life Exposure to the Antidepressant S‐citalopram
Rodriquez M, Shetty M, Black E, Kretschmar M, Perley D, De Kumar B, Henry L. Analysis of DNA Methylation Changes in Mice Mediated by Early‐life Exposure to the Antidepressant S‐citalopram. The FASEB Journal 2020, 34: 1-1. DOI: 10.1096/fasebj.2020.34.s1.06398.Peer-Reviewed Original ResearchMethylation changesSelective serotonin reuptake inhibitorsGenome-wide scaleDNA methylation changesSingle amino acid substitutionDNA methylation analysisSpecific methylation changesAmino acid substitutionsExpression changesMolecular mechanismsAcid substitutionsMethylation analysisSerotonin transporter blockadeSerotonin reuptake inhibitorsEarly life exposurePost-analysis methodsEarly developmentMice MediatedTransgenic miceReuptake inhibitorsTransporter blockadeMale miceS-citalopramSerotonin transporterSignificant risk
2017
Dynamic regulation of Nanog and stem cell-signaling pathways by Hoxa1 during early neuro-ectodermal differentiation of ES cells
De Kumar B, Parker H, Parrish M, Lange J, Slaughter B, Unruh J, Paulson A, Krumlauf R. Dynamic regulation of Nanog and stem cell-signaling pathways by Hoxa1 during early neuro-ectodermal differentiation of ES cells. Proceedings Of The National Academy Of Sciences Of The United States Of America 2017, 114: 5838-5845. PMID: 28584089, PMCID: PMC5468655, DOI: 10.1073/pnas.1610612114.Peer-Reviewed Original ResearchConceptsES cell differentiationRegulatory networksMutual repressionRegulatory regionsCell differentiationCore pluripotency networkGenome-wide mappingRegulation of pluripotencyPatterns of occupancyCell-signaling pathwaysPluripotency networkNanog bindsHox genesGenomic approachesCommon target sitesRetinoic acid treatmentTarget genesDynamic regulationES cellsMouse embryosMolecular mechanismsHOXA1GenesAlternate statesNanog