2020
Signalling input from divergent pathways subverts B cell transformation
Chan LN, Murakami MA, Robinson ME, Caeser R, Sadras T, Lee J, Cosgun KN, Kume K, Khairnar V, Xiao G, Ahmed MA, Aghania E, Deb G, Hurtz C, Shojaee S, Hong C, Pölönen P, Nix MA, Chen Z, Chen CW, Chen J, Vogt A, Heinäniemi M, Lohi O, Wiita AP, Izraeli S, Geng H, Weinstock DM, Müschen M. Signalling input from divergent pathways subverts B cell transformation. Nature 2020, 583: 845-851. PMID: 32699415, PMCID: PMC7394729, DOI: 10.1038/s41586-020-2513-4.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsB-LymphocytesCell Line, TumorCell Transformation, NeoplasticEnzyme ActivationExtracellular Signal-Regulated MAP KinasesFemaleHumansLeukemia, B-CellMiceProtein Tyrosine Phosphatase, Non-Receptor Type 6Proto-Oncogene Proteins c-bcl-6Proto-Oncogene Proteins c-mycSignal TransductionSTAT5 Transcription FactorConceptsPre-B cell receptorPrincipal oncogenic driverDivergent pathwaysSignal transduction proteinsPro-B cell stageSingle-cell mutationTranscription factor MYCOncogenic driversDivergent signaling pathwaysSingle oncogenic pathwayCentral oncogenic driverMore mature cellsGenetic reactivationTranscriptional programsB-cell transformationProtein kinasePathway componentsERK activationIndividual mutationsOncogenic STAT5Signaling pathwaysCell transformationCytokine receptorsGenetic lesionsDivergent circuits
2018
Ras-Driven B-Cell Transformation Targets Developmental Rewiring of Cytokine to Pre-B Cell Receptor Signaling
Chan L, Hurtz C, Geng H, Auer F, Chen Z, Xiao G, Lee J, Cosgun K, Ye B, Muschen M. Ras-Driven B-Cell Transformation Targets Developmental Rewiring of Cytokine to Pre-B Cell Receptor Signaling. Blood 2018, 132: 1336. DOI: 10.1182/blood-2018-99-115514.Peer-Reviewed Original ResearchPre-BCR signalingOncogenic Ras signalingOncogene-induced senescencePotential therapeutic intervention pointsCompetitive growth assaysInducible activationTherapeutic intervention pointCytokine receptorsRas signalingOncogenic RasPre-B cell receptor signalingCell transitionGenetic studiesPre-B cell receptorPre-B cell transitionIrreversible cell cycle arrestEarly B cell developmentLight chain gene expressionCell receptor signalingB cell developmentARF/p53Number of coloniesChain gene expressionDepletion of cellsCell cycle arrestDivergent Evolutionary Trajectories of Erk- and Stat5-Activating Lesions in Acute Lymphoblastic Leukemia
Chan L, Shojaee S, Hurtz C, Auer F, Chen Z, Cosgun K, Geng H, Sadras T, White D, Muschen M. Divergent Evolutionary Trajectories of Erk- and Stat5-Activating Lesions in Acute Lymphoblastic Leukemia. Blood 2018, 132: 568. DOI: 10.1182/blood-2018-99-115536.Peer-Reviewed Original ResearchEvolutionary trajectoriesColony formation abilityCompetitive fitnessCommitment stepPre-B cell receptorDivergent evolutionary trajectoriesUpstream kinase MEKNormal B cell developmentOncogenic signal transductionInducible ablationActivation of STAT5B cell developmentEmpty vector controlActivation of ERKCentral oncogenic driverB-cell transformationImmature B cellsSignal transductionFormation abilityKinase MEKPhosphorylation of ERKGrowth factor receptorPatient-derived preAlternative pathwayERK activity
2015
CD25 (IL2RA) Orchestrates Negative Feedback Control and Stabilizes Oncogenic Signaling Strength in Acute Lymphoblastic Leukemia
Lee J, Chen Z, Geng H, Xiao G, Eugene P, Parekh S, Kornblau S, Melnick A, Abbas A, Paietta E, Muschen M. CD25 (IL2RA) Orchestrates Negative Feedback Control and Stabilizes Oncogenic Signaling Strength in Acute Lymphoblastic Leukemia. Blood 2015, 126: 1434. DOI: 10.1182/blood.v126.23.1434.1434.Peer-Reviewed Original ResearchPre-BCR signalingPre-B cell receptorCytoplasmic tailOncogenic tyrosine kinasesB cell developmentTyrosine kinaseSerine/threonine protein kinaseCell developmentConstitutive membrane localizationCytoplasmic interaction partnersReceptor chainsEarly B cell developmentThreonine protein kinaseDownstream tyrosine kinasePre-B cell stageShort cytoplasmic tailNegative feedback controlComprehensive gene expression analysisDependent signal transductionTyrosine kinase BtkTyrosine kinase oncogenesGene expression analysisSerial transplantation experimentsB lineage cellsAbsence of CD25
2013
Targeting Pre-B Cell Receptor and BCL6 In TCF3-PBX1 B-Lineage Acute Lymphoblastic Leukemia
Geng H, Hurtz C, Chen Z, Chen W, Ballabio E, Xiao G, Kweon S, Nahar R, Sojaee S, Chan L, Masouleh B, Sykes D, Melnick A, Roeder R, Milne T, Muschen M. Targeting Pre-B Cell Receptor and BCL6 In TCF3-PBX1 B-Lineage Acute Lymphoblastic Leukemia. Blood 2013, 122: 349. DOI: 10.1182/blood.v122.21.349.349.Peer-Reviewed Original ResearchPre-BCR signalingGene expression microarray dataB-lineage acute lymphoblastic leukemiaExpression microarray dataTyrosine kinase inhibitorsPre-B cell receptorCell deathMicroarray dataPre-BCR componentsPoor clinical outcomeAcute lymphoblastic leukemiaTCF3-PBX1Cell line 697Cell cycle arrestTranscriptional repressor BCL6ChIPseq dataPre-BCRChIP-seqCellular processesClinical outcomesCritical survival factorTherapeutic targetLeukemia cellsLymphoblastic leukemiaTransplant recipient miceBACH2 mediates negative selection and p53-dependent tumor suppression at the pre-B cell receptor checkpoint
Swaminathan S, Huang C, Geng H, Chen Z, Harvey R, Kang H, Ng C, Titz B, Hurtz C, Sadiyah MF, Nowak D, Thoennissen GB, Rand V, Graeber TG, Koeffler HP, Carroll WL, Willman CL, Hall AG, Igarashi K, Melnick A, Müschen M. BACH2 mediates negative selection and p53-dependent tumor suppression at the pre-B cell receptor checkpoint. Nature Medicine 2013, 19: 1014-1022. PMID: 23852341, PMCID: PMC3954721, DOI: 10.1038/nm.3247.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsBasic-Leucine Zipper Transcription FactorsCell DeathCell DifferentiationCell SurvivalCell Transformation, NeoplasticDNA-Binding ProteinsGene DeletionGene Expression Regulation, LeukemicGreen Fluorescent ProteinsImmunoglobulin mu-ChainsMiceMolecular Sequence DataPAX5 Transcription FactorPre-B Cell ReceptorsPrecursor Cell Lymphoblastic Leukemia-LymphomaPrecursor Cells, B-LymphoidProto-Oncogene Proteins c-bcl-6Proto-Oncogene Proteins c-mycRNA, MessengerSTAT5 Transcription FactorTreatment OutcomeTumor Suppressor Protein p53V(D)J Recombination
2011
Pre-B Cell Receptor-Mediated Activation of BCL6 Induces Pre-B Cell Quiescence Through Transcriptional Repression of MYC
Nahar R, Ramezani-Rad P, Mossner M, Duy C, Cerchietti L, Geng H, Jumaa H, Ye B, Melnick A, Muschen M. Pre-B Cell Receptor-Mediated Activation of BCL6 Induces Pre-B Cell Quiescence Through Transcriptional Repression of MYC. Blood 2011, 118: 1406. DOI: 10.1182/blood.v118.21.1406.1406.Peer-Reviewed Original ResearchPre-B cell receptorCell receptorCell cycle exitExit cell cycleInitial proliferative burstAcute lymphoblastic leukemiaCycle exitB cell precursorsPre-B cell receptor signalingInducible activationTranscriptional repressor BCL6Receptor-Mediated ActivationCell receptor signalingInduction of quiescenceLymphoblastic leukemiaCell surface expressionOverexpression of MYCCCND2 expressionCell cycleBcl6-deficient miceMalignant transformationReceptor signalingReceptors resultsCell precursorsReceptorsMechanisms of Ikaros-Mediated Tumor Suppression
Nahar R, Ramezani-Rad P, Dovat S, Buchner M, Graeber T, Muschen M. Mechanisms of Ikaros-Mediated Tumor Suppression. Blood 2011, 118: 408. DOI: 10.1182/blood.v118.21.408.408.Peer-Reviewed Original ResearchPre-B cell receptor signalingPre-B cell receptorCell receptor signalingAbility of IkarosGene expression changesTumor suppressor pathwayTumor suppressionTumor suppressorDephosphorylation eventsReceptor signalingGenetic evidenceSuppressor pathwayAdapter moleculeExpression changesCritical phosphorylation eventsCommon gene expression changesCell receptorTumor-suppressive transcription factorCell cycle exitSimilar gene expression changesComprehensive gene expression analysisARF/p53 pathwayLeukemia cellsBCR-ABL1 kinaseCell cycle progression
2010
IKAROS and BCL6 Limit Pre-B Cell Expansion and Prevent Leukemogenesis Downstream of the Pre-B Cell Receptor
Nahar R, Ramezani-Rad P, Duy C, Dovat S, Ye B, Melnick A, Muschen M. IKAROS and BCL6 Limit Pre-B Cell Expansion and Prevent Leukemogenesis Downstream of the Pre-B Cell Receptor. Blood 2010, 116: 146. DOI: 10.1182/blood.v116.21.146.146.Peer-Reviewed Original ResearchPre-B cell receptorCell cycle arrestCell cycle progressionTumor suppressorCycle arrestTumor suppressionIkaros functionCycle progressionNegative cell cycle regulationSignaling leadsDephosphorylation of STAT5Cell receptorIkaros expressionBCL6 transcriptional repressorGenome-wide ChIPPre-B cell expansionCell cycle regulationSubsequent cell cycle arrestCentral mediatorOverexpression of MYCProliferation downstreamTranscriptional repressionGenetic experimentsTranscriptional repressorTranscriptional activationMechanisms of Pre-B Cell Receptor-Inactivation In Acute Lymphoblastic Leukemia
Duy C, Nowak D, Klemm L, Nahar R, Ng C, Elliott E, Hofmann W, Heisterkamp N, Lowell C, Koeffler P, Muschen M. Mechanisms of Pre-B Cell Receptor-Inactivation In Acute Lymphoblastic Leukemia. Blood 2010, 116: 147. DOI: 10.1182/blood.v116.21.147.147.Peer-Reviewed Original ResearchPre-B cell receptorImmunoglobulin μ chainCell receptor functionCell receptor stimulationTyrosine kinasePAX5 fusion genesSystematic gene expression analysisΜ chainsSplice variantsCell receptorRapid cell cycle arrestExon 16Immunoglobulin gene rearrangementsReceptor functionReceptor signal transductionPre-B cell receptor functionGene rearrangementsGene expression analysisLeukemia cellsDominant-negative waySyk tyrosine kinaseCell cycle arrestPre B cellsSH2 domainMRNA splicingPre-B Cell Receptor Signaling Distinguishes E2A-PBX1 From Other Subtypes of Acute Lymphoblastic Leukemia
Nahar R, Trageser D, Klemm L, Duy C, Hofmann W, Park E, Kim Y, Heisterkamp N, Jumaa H, Muschen M. Pre-B Cell Receptor Signaling Distinguishes E2A-PBX1 From Other Subtypes of Acute Lymphoblastic Leukemia. Blood 2010, 116: 274. DOI: 10.1182/blood.v116.21.274.274.Peer-Reviewed Original ResearchPre-B cell receptorPre-B cell receptor signalingFunctional pre-B cell receptorEarly pre-B cell stageCanonical Wnt/β-catenin signalingPre-B cell stageCell receptor signalingWnt/β-catenin signalingCell receptor functionE2A-PBX1Β-catenin signalingBCR-ABL1 oncogeneCell stageB cell lineage commitmentCell receptorReceptor signalingPre-B cell receptor expressionEarly B cell developmentComparative gene expressionMLL-AF4Pre-B cell receptor functionCell lineage commitmentReceptor functionGene expression differencesCanonical Wnt/β-cateninDominant-Negative Impact of PAX5/TEL on Downstream Targets of PAX5 and Essential Pre-B Cell Receptor Genes
Iwanski G, Thoennissen N, Nakitandwe J, Lin P, Kawamata N, Nahar R, Ramezani-Rad P, Chen S, Shurtleff S, Nowak D, Ruckert C, Dugas M, Bokemeyer C, Fazio G, Biondi A, Cazzaniga G, Downing J, Müschen M, Koeffler H. Dominant-Negative Impact of PAX5/TEL on Downstream Targets of PAX5 and Essential Pre-B Cell Receptor Genes. Blood 2010, 116: 3231. DOI: 10.1182/blood.v116.21.3231.3231.Peer-Reviewed Original ResearchB cell developmentPre-BCR signalingDominant-negative impactCell developmentTarget genesReporter constructsTyrosine kinasePre-B cell receptorPax5 target genesWild-type PAX5CCAAT/enhancer binding protein alphaBruton's agammaglobulinemia tyrosine kinaseTranscription factor Pax5Downstream target genesGene expression profilesDominant negative roleBCR pathwayGene expression dataLuciferase reporter constructsEndogenous Pax5High expression levelsTranscriptional activationAffymetrix HG-U133Downstream genesExpression of PAX5SYK Is a Tumor Suppressor In Pre-B Cell Acute Lymphoblastic Leukemia and Not a Therapeutic Target
Ng C, Nahar R, Elliott E, Lowell C, Muschen M. SYK Is a Tumor Suppressor In Pre-B Cell Acute Lymphoblastic Leukemia and Not a Therapeutic Target. Blood 2010, 116: 4199. DOI: 10.1182/blood.v116.21.4199.4199.Peer-Reviewed Original ResearchDeletion of SykPre-B leukemia cellsAcute lymphoblastic leukemiaPre-B cell receptor functionB-cell lymphomaImatinib treatmentTumor-suppressive effectsRole of SykPre-B cell receptorCell cycle arrestBCR-ABL1Cell receptorCritical survival signalsLeukemia cellsCell receptor signalingLymphoblastic leukemiaCell lymphomaSuppressive effectCycle arrestSyk tyrosine kinaseReceptor functionPre-B-cell acute lymphoblastic leukemiaWestern blotReceptor signalingPre-B cell receptor expression
2009
The Pax5 Fusion Product Pax5-C20orf112 Causes Downregulation of Pre-B Cell Receptor Genes and Induces Differential Proliferation Patterns in B-Lymphoblastic Cell Lines.
Nowak D, Kawamata N, Niebuhr B, Nowak V, Mossner M, Nahar R, Thoennissen N, Iwanski G, Stocking C, Dugas M, Hofmann W, Müschen M, Koeffler P. The Pax5 Fusion Product Pax5-C20orf112 Causes Downregulation of Pre-B Cell Receptor Genes and Induces Differential Proliferation Patterns in B-Lymphoblastic Cell Lines. Blood 2009, 114: 1284. DOI: 10.1182/blood.v114.22.1284.1284.Peer-Reviewed Original ResearchPre-B cell receptor signalingPre-B cell receptorWild-type PAX5Cell receptor signalingImmunoglobulin heavy locusCandidate genesFusion productsCell linesFunctional pre-B cell receptorB-cell-specific transcription factor Pax5Spleen tyrosine kinaseGlobal gene expression analysisReceptor signalingPleckstrin homology domainRetroviral expression constructsB-cell linkerGroup of genesTranscription factor Pax5Promoter binding sitesAdaptor protein 1Receptor pathwayGene expression analysisEmpty vector controlGene expression microarraysCommon genomic lesionsInactivation of Pre-B Cell Receptor-Mediated Tumor Suppression by Aberrant Splicing in Ph+ Acute Lymphoblastic Leukemia.
Duy C, Sprangers M, Klemm L, Nahar R, Nowak D, Martinelli G, Hofmann W, Koeffler P, Jumaa H, Müschen M. Inactivation of Pre-B Cell Receptor-Mediated Tumor Suppression by Aberrant Splicing in Ph+ Acute Lymphoblastic Leukemia. Blood 2009, 114: 579. DOI: 10.1182/blood.v114.22.579.579.Peer-Reviewed Original ResearchPre-B cell receptorSH2 domainSplice factorsTumor suppressor functionAberrant splicingSplice variantsPre-B cell receptor signalingSequence analysisSplice siteSplice site mutationExon 16Suppressor functionCell receptorImportant protein domainsFunctional SH2 domainSite mutationSplice site selectionDetailed sequence analysisCell receptor signalingDominant negative effectDownstream effector moleculesCell linesMultiple splice variantsSplicing factorsProtein domains
2008
Pre-B Cell Receptor Signaling Prevents Leukemic Transformation by BCR-ABL1
Trageser D, Duy C, Klemm L, Gruber T, Nahar R, Park E, Kim Y, Groffen J, Heisterkamp N, Hofmann W, Martinelli G, Williams R, Jumaa H, Muschen M. Pre-B Cell Receptor Signaling Prevents Leukemic Transformation by BCR-ABL1. Blood 2008, 112: 15. DOI: 10.1182/blood.v112.11.15.15.Peer-Reviewed Original ResearchFunctional pre-B cell receptorAcute lymphoblastic leukemiaBCR-ABL1Pre-B cell receptorCell receptorBone marrowPre-B cell receptor functionTransgenic miceLeukemic transformationLeukemic growthNOD/SCID miceWeight lossLeukemia cellsReceptor selectionTransgenic mouse modelSignificant weight lossPre-B cell receptor signalingBCR-ABL1 expressionSigns of diseaseSurvival signalsEarly B cell developmentLeukemic infiltrationSplenic enlargementCell receptor signalingPeripheral bloodThe Pre-B Cell Receptor Suppresses Leukemogenesis by Censoring MYC Expression.
Nahar R, Trageser D, Klemm L, Duy C, van Essen P, Kim Y, Heisterkamp N, Martinelli G, Hofmann W, Jack H, Jumaa H, Muschen M. The Pre-B Cell Receptor Suppresses Leukemogenesis by Censoring MYC Expression. Blood 2008, 112: 1918. DOI: 10.1182/blood.v112.11.1918.1918.Peer-Reviewed Original ResearchPre-B cell receptorPre-B cell receptor expressionPre-B cell receptor signalingFunctional pre-B cell receptorEarly pre-B cell stagePre-B cell stageCell receptor signalingSubstantial growth advantageB cell precursorsCell stageE2A-PBX1Receptor signalingCell receptorCell precursorsEarly B cell developmentGrowth advantageComparative gene expressionMYC expressionMLL-AF4Cell receptor expressionB cell developmentMYC mRNA levelsHeavy chain locusHigh expression levelsBCR-ABL1 oncogeneAberrant Splicing of the SLP65 SH2 Domain Enables Pre-B Cell Transformation and Compromises the Leukemia-Suppressive Function of the Pre-B Cell Receptor
Duy C, Klemm L, Nahar R, van Essen P, Sprangers M, Kim Y, Park E, Martinelli G, Heisterkamp N, Hofmann W, Jumaa H, Muschen M. Aberrant Splicing of the SLP65 SH2 Domain Enables Pre-B Cell Transformation and Compromises the Leukemia-Suppressive Function of the Pre-B Cell Receptor. Blood 2008, 112: 294. DOI: 10.1182/blood.v112.11.294.294.Peer-Reviewed Original ResearchBCR-ABL1Pre-B cell receptorEarly pre-B cell stageCell receptorPre-B cell stageNOD/SCID miceLeukemia cellsPre-B cell receptor signalingSigns of diseaseSplice variantsEarly B cell developmentLeukemic infiltrationQuantitative RT-PCRCell receptor signalingCell receptor engagementSCID miceBone marrowB cell developmentMalignant transformationPre-B-cell transformationLeukemic growthCell transformationInduction of differentiationGermline mutationsMice
2007
Pre-B Cell Receptor Signaling Prevents Leukemic Transformation by BCR-ABL1.
Trageser D, Klemm L, Herzog S, Kim Y, Duy C, Hofmann W, Groffen J, Heisterkamp N, Jumaa H, Muschen M. Pre-B Cell Receptor Signaling Prevents Leukemic Transformation by BCR-ABL1. Blood 2007, 110: 2795. DOI: 10.1182/blood.v110.11.2795.2795.Peer-Reviewed Original ResearchPre-B cell receptorFunctional pre-B cell receptorImmunoglobulin heavy chain locusAcute lymphoblastic leukemiaBCR-ABL1Cell receptorSurvival signalsPre-B cell receptor signalingReceptor selectionEarly B cell developmentBone marrowPre-B cell receptor functionTransgenic miceLeukemic transformationCell receptor signalingRapid cell deathB cell developmentHuman BCR-ABL1Potent tumor suppressorHeavy chain locusPre B cellsSingle-cell PCRTransgenic mouse modelCell receptor functionB cell precursors
2005
Mimicry of a constitutively active pre–B cell receptor in acute lymphoblastic leukemia cells
Feldhahn N, Klein F, Mooster JL, Hadweh P, Sprangers M, Wartenberg M, Bekhite MM, Hofmann WK, Herzog S, Jumaa H, Rowley JD, Müschen M. Mimicry of a constitutively active pre–B cell receptor in acute lymphoblastic leukemia cells. Journal Of Experimental Medicine 2005, 201: 1837-1852. PMID: 15939795, PMCID: PMC2213268, DOI: 10.1084/jem.20042101.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAgedCalcium SignalingCell Line, TumorCell SurvivalChildChild, PreschoolFemaleGene Expression Regulation, LeukemicHumansMaleMembrane GlycoproteinsMiddle AgedMolecular MimicryPre-B Cell ReceptorsPrecursor Cell Lymphoblastic Leukemia-LymphomaProtein-Tyrosine KinasesReceptors, Antigen, B-CellConceptsBruton's tyrosine kinaseBCR-ABL1Pre-B cell receptorCell receptorFull‐length Bruton tyrosine kinaseSurvival signalsAcute lymphoblastic leukemia cellsLeukemia cellsBCR-ABL1 kinase activityLymphoblastic leukemia cellsDownstream survival signalsBCR-ABL1 kinaseTyrosine kinaseCell receptor engagementKinase activityBypass selectionSTAT5 phosphorylationSrc homology domain 3BTK activityReceptorsAutonomous Ca2Receptor engagementSimilar extentActivation of PLCgamma1Dependent activation