2024
Dynamic recruitment of inhibitory complexes by CD25 controls B-cell development and selection
Sun R, Lee J, Robinson M, Kume K, Ma N, Cosgun K, Chan L, Antoshkina I, Khanduja D, Leveille E, Katz S, Vaidehi N, Müschen M. Dynamic recruitment of inhibitory complexes by CD25 controls B-cell development and selection. The Journal Of Immunology 2024, 212: 1253_4618-1253_4618. DOI: 10.4049/jimmunol.212.supp.1253.4618.Peer-Reviewed Original ResearchBCR signalingInhibitory complexInhibitory phosphatasesPositively charged tailITIM-bearing receptorsInitiation of BCR signalingNegatively charged residuesB cell developmentSH2 domainPhosphatase domainCytoplasmic tailITIM motifsGenetic studiesPhosphatase SHP1Co-IPBCR complexDynamic recruitmentIL2 receptorCell surfaceB cellsSHP1Surface-expressedTernary complexClonal expansionPhosphatase
2023
Optogenetic Control of Oncogenic Signaling in B-Cell Malignancies
Kume K, Lee J, Cheng Z, Robinson M, Leveille E, Cosgun K, Chan L, Feng Y, Arce D, Khanduja D, Toomre D, Müschen M. Optogenetic Control of Oncogenic Signaling in B-Cell Malignancies. Blood 2023, 142: 4138. DOI: 10.1182/blood-2023-190926.Peer-Reviewed Original ResearchB-cell malignanciesB-cell lymphomaMature B-cell lymphomasB cell deathB cellsB cell developmentGenetic deletionMantle cell lymphomaNF-kB signalingBCR signal inhibitorsB cell precursorsCell of originCell viabilityChronic active BCRB cell survivalB cell receptor signalsHodgkin's diseaseMultiple myelomaNormal B cell developmentPlasma cellsBtk tyrosine kinaseCell lymphomaBurkitt's lymphomaNF-kBSmall molecule inhibitorsComputational Discovery and Validation of NAD+ Biosynthesis As Unique Vulnerability in B-Lymphoid Malignancies
Li Q, Robinson M, Leveille E, Zhang C, Sun R, Cheng Z, Kume K, Cosgun K, Kothari S, Khanduja D, Nakada D, Müschen M. Computational Discovery and Validation of NAD+ Biosynthesis As Unique Vulnerability in B-Lymphoid Malignancies. Blood 2023, 142: 418. DOI: 10.1182/blood-2023-190269.Peer-Reviewed Original ResearchSmall molecule inhibitorsDrug discovery toolNAMPT inhibitorsCompound screenCell type-specific targetsCell linesMolecule inhibitorsPurine/pyrimidine metabolismTumor cell linesEnergy metabolismSalvage biosynthesis pathwaySolid tumor cell linesB cell developmentCellular energy metabolismB cell signalingAmino acid metabolismCell cycle arrestDiscovery toolDepletion of metabolitesBiosynthesis pathwayCompetitive fitnessRate-limiting enzymeNAMPT deletionConditional mouse modelEnergy stressMYC to BCL6 State-Transitions Determine Cell Size and Metabolic Fluctuations and Define a Novel Biorhythm in B-Cell Malignancies
Cheng Z, Kume K, Müschen M. MYC to BCL6 State-Transitions Determine Cell Size and Metabolic Fluctuations and Define a Novel Biorhythm in B-Cell Malignancies. Blood 2023, 142: 2769. DOI: 10.1182/blood-2023-190972.Peer-Reviewed Original ResearchGerminal center-derived B-cell lymphomaB cell developmentCell size fluctuationsCell cycleImmunoglobulin light chain gene recombinationDNA damage-induced apoptosisDistinct cellular statesNormal B cell developmentDamage-induced apoptosisExit cell cycleCell sizeB cell transitionGene expression profilesQuiescent phenotypeOncogenic tyrosine kinasesCell cycle arrestActivation of autophagySingle-cell sortingCellular statesCell divisionHigher glycolysis activityMYC transcriptionB cell cycleSuppression of glycolysisExpression profilesCD25 recruits inhibitory phosphatases for feedback control of B-cell receptor signaling
Sun R, Lee J, Robinson M, Kume K, Cosgun K, Chan L, Leveille E, Geng H, Vykunta V, Shy B, Marson A, Meffre E, Müschen M. CD25 recruits inhibitory phosphatases for feedback control of B-cell receptor signaling. The Journal Of Immunology 2023, 210: 154.23-154.23. DOI: 10.4049/jimmunol.210.supp.154.23.Peer-Reviewed Original ResearchAntigen-experienced B cellsB cellsEarly B cell developmentGerminal centersB cell developmentSpontaneous germinal centersCD25 surface expressionAutoreactive B cellsRole of CD25B cell toleranceB-cell receptor signalingB-cell leukemiaB cell receptorAutoantibody productionCD25Cell toleranceGenetic ablationReceptor signalingBCR signalingOncogenic signalingInhibitorySuccessful initiationSignalingNegative selectionAutoimmunity
2021
Identification of BCL6 As Synthetic Lethality in RAS-Driven B-Cell Transformation
Chan L, Hurtz C, Leveille E, Kume K, Robinson M, Geng H, Cosgun K, Müschen M. Identification of BCL6 As Synthetic Lethality in RAS-Driven B-Cell Transformation. Blood 2021, 138: 792. DOI: 10.1182/blood-2021-148653.Peer-Reviewed Original ResearchRAS-ERK pathwayB cell developmentNormal B cell developmentRAS-ERKCell deathTransplant recipient miceSynthetic lethalityGenetic lesionsBCL6 expressionGenetic ablationChIP-seq analysisRAS-ERK signalingPermanent activationMurine B cell precursorsB cell precursorsDeletion of Bcl6Pharmacological inhibitionDoxycycline-inducible expressionSmall molecule inhibitionNegative B cell selectionSmall molecule inhibitorsExpression of PRDM1BCL6 promoterB-cell transformationExpression of BCL6Pharmacological Targeting of PI3K-Dependent Central Tolerance Mechanisms in Refractory Pre-Germinal Center B-Cell Malignancies
Kume K, Lee J, Chan L, Robinson M, Cosgun K, Meffre E, Müschen M. Pharmacological Targeting of PI3K-Dependent Central Tolerance Mechanisms in Refractory Pre-Germinal Center B-Cell Malignancies. Blood 2021, 138: 2267. DOI: 10.1182/blood-2021-149806.Peer-Reviewed Original ResearchCentral tolerance mechanismsMantle cell lymphomaB-cell malignanciesAutoreactive B cellsB cellsB cell developmentB cell receptorEarly B cell developmentB-ALLClinical cohortPharmacological targetingPathological signalingU-CLLNormal B-cell activationAutoreactive B cell receptorsRefractory B-ALLSequential treatment regimensPI3KNegative B cell selectionChronic lymphocytic leukemiaLarge clinical cohortB cell activationB-cell tumorsHuman B lymphopoiesisB cell selectionDevelopmental partitioning of SYK and ZAP70 prevents autoimmunity and cancer
Sadras T, Martin M, Kume K, Robinson ME, Saravanakumar S, Lenz G, Chen Z, Song JY, Siddiqi T, Oksa L, Knapp AM, Cutler J, Cosgun KN, Klemm L, Ecker V, Winchester J, Ghergus D, Soulas-Sprauel P, Kiefer F, Heisterkamp N, Pandey A, Ngo V, Wang L, Jumaa H, Buchner M, Ruland J, Chan WC, Meffre E, Martin T, Müschen M. Developmental partitioning of SYK and ZAP70 prevents autoimmunity and cancer. Molecular Cell 2021, 81: 2094-2111.e9. PMID: 33878293, PMCID: PMC8239336, DOI: 10.1016/j.molcel.2021.03.043.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAntigens, CD19AutoimmunityB-LymphocytesCalciumCell DifferentiationCell Transformation, NeoplasticEnzyme ActivationHumansImmune ToleranceLymphoma, B-CellMiceModels, GeneticNeoplasm ProteinsNeoplasmsNFATC Transcription FactorsPhosphatidylinositol 3-KinasesProtein BindingReceptors, Antigen, B-CellSignal TransductionSyk KinaseZAP-70 Protein-Tyrosine KinasePON2 subverts metabolic gatekeeper functions in B cells to promote leukemogenesis
Pan L, Hong C, Chan LN, Xiao G, Malvi P, Robinson ME, Geng H, Reddy ST, Lee J, Khairnar V, Cosgun KN, Xu L, Kume K, Sadras T, Wang S, Wajapeyee N, Müschen M. PON2 subverts metabolic gatekeeper functions in B cells to promote leukemogenesis. Proceedings Of The National Academy Of Sciences Of The United States Of America 2021, 118: e2016553118. PMID: 33531346, PMCID: PMC7896313, DOI: 10.1073/pnas.2016553118.Peer-Reviewed Original ResearchConceptsTransplant recipient miceDNA double-strand breaksNormal B cell developmentDouble-strand breaksB cell developmentGenetic deletionB cellsLymphoid transcription factorsGlucose transporter GLUT1Gatekeeper functionGlucose uptakeRecipient miceTranscription factorsSomatic recombinationSynthetic lethalityB-cell acute lymphoblastic leukemiaCell developmentMetabolic gatekeeperRefractory B-ALLDeficient murineCell acute lymphoblastic leukemiaPoor clinical outcomeCell typesAcute lymphoblastic leukemiaGlucose transport
2019
Signaling Input from Divergent Pathways Subverts Malignant B-Cell Transformation
Chan L, Murakami M, Caesar R, Hurtz C, Kume K, Sadras T, Shojaee S, Pölönen P, Ugale A, Lee J, Cosgun K, Geng H, Heinäniemi M, Lohi O, Wiita A, Izraeli S, Weinstock D, Müschen M. Signaling Input from Divergent Pathways Subverts Malignant B-Cell Transformation. Blood 2019, 134: 3944. DOI: 10.1182/blood-2019-130774.Peer-Reviewed Original ResearchB-cell transformationPrincipal oncogenic driverMalignant B-cell transformationOncogenic driversMalignant transformationNormal B cellsDrug-resistant cancersCentral oncogenic driverCurrent treatmentB cellsPharmacological reactivationSingle oncogenic pathwaySmall molecule agonistsSurface receptorsAdvisory CommitteeB cell receptorERK signal pathwayNormal B cell developmentTreatment responseRare caseDivergent signaling pathwaysSolid tumorsB cell developmentFatal diseaseMolecule agonistsLgr5 Functions As a Critical Negative Regulator of Wnt/β-Catenin Signaling and Is Essential for B-Lymphopoiesis and Malignant B-Cell Transformation
Cosgun K, Deb G, Yang X, Xiao G, Sadras T, Lee J, Chan L, Kume K, Yang L, Geng H, Chan J, Song J, Jumaa H, Polson A, Clevers H, Müschen M. Lgr5 Functions As a Critical Negative Regulator of Wnt/β-Catenin Signaling and Is Essential for B-Lymphopoiesis and Malignant B-Cell Transformation. Blood 2019, 134: 748. DOI: 10.1182/blood-2019-127263.Peer-Reviewed Original ResearchB-cell lineage acute lymphoblastic leukemiaWnt/β-catenin signalingΒ-catenin signalingNuclear β-cateninAntibody-drug conjugatesB cell developmentB cell survivalΒ-cateninB lymphopoiesisFunction of LGR5Median mRNA levelsTime of diagnosisPoor clinical outcomeRole of LGR5Acute lymphoblastic leukemiaB-cell lymphomaLeukemia initiating cellsWnt/β-cateninHigh surface expressionMalignant B-cell transformationCell linesB cell precursorsTypes of cancerHuman colon cancer cell linesB-cell lineageDynamic Assembly of a Feedback Complex to Regulate Oncogenic B-Cell Receptor-Signaling
Lee J, Kume K, Chen Z, Xiao G, Cosgun K, Chen L, Chan L, Klemm L, Chen C, Ma N, Chan W, Forman S, Zammarchi F, Van Berkel P, Melnick A, Ngo V, Geng H, Luger S, Litzow M, McManus M, Vaidehi N, Paietta E, Meffre E, Weinstock D, Müschen M. Dynamic Assembly of a Feedback Complex to Regulate Oncogenic B-Cell Receptor-Signaling. Blood 2019, 134: 393. DOI: 10.1182/blood-2019-131270.Peer-Reviewed Original ResearchB-cell malignanciesB-cell leukemiaB cell receptorPoor clinical outcomeTransplant recipientsB cellsCytoplasmic tailClinical outcomesADC therapeuticsFatal diseaseProximity-dependent biotin identificationRefractory B-cell malignanciesPatient-derived xenograft modelsT cell growth factorNormal B cell developmentClinical outcome dataShort cytoplasmic tailHomology-directed repairB-cell receptor signalingCell membrane translocationNF-κB activationInterleukin-2 (IL-2) functionB cell developmentB-cell tumorsGenetic mouse modelsRationale for targeting BCL6 in MLL-rearranged acute lymphoblastic leukemia
Hurtz C, Chan LN, Geng H, Ballabio E, Xiao G, Deb G, Khoury H, Chen CW, Armstrong SA, Chen J, Ernst P, Melnick A, Milne T, Müschen M. Rationale for targeting BCL6 in MLL-rearranged acute lymphoblastic leukemia. Genes & Development 2019, 33: 1265-1279. PMID: 31395741, PMCID: PMC6719625, DOI: 10.1101/gad.327593.119.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsBiomarkers, TumorCell SurvivalCells, CulturedGene DeletionGene Expression Regulation, LeukemicGene TargetingHumansMiceMyeloid-Lymphoid Leukemia ProteinOncogene Proteins, FusionPrecursor Cell Lymphoblastic Leukemia-LymphomaPrognosisPromoter Regions, GeneticProto-Oncogene Proteins c-bcl-6ConceptsB-cell acute lymphoblastic leukemiaAcute lymphoblastic leukemiaLymphoblastic leukemiaPharmacological inhibitionGroup of patientsBCL6 expressionBone marrow biopsyBH3 mimetic ABT-199Transplant recipient miceMLL fusionsB-cell transformationMarrow biopsyTreatment of MLLDismal outcomeRecipient miceNormal B cell developmentImmunohistochemical stainingTranscriptional activationB cell developmentMalignant transformationDrug resistanceGenetic deletionPatient samplesExpression of BimMLL-ENL fusionMicroRNA-142 Is an Essential Negative Regulator of B Cell Maturation and Malignant Transformation
Graham N, Wang W, Magilnick N, Lee J, Wang H, Zhang B, Marcucci G, Muschen M, Reyes E, Boldin M. MicroRNA-142 Is an Essential Negative Regulator of B Cell Maturation and Malignant Transformation. The Journal Of Immunology 2019, 202: 53.22-53.22. DOI: 10.4049/jimmunol.202.supp.53.22.Peer-Reviewed Original ResearchMalignant B-cell transformationB cell developmentEμ-myc transgenic miceEssential negative regulatorB cell maturationNegative regulatorB-cell transformationMiR-142Transgenic miceCell developmentCell transformationB-cell lymphoblastic leukemiaCell maturationEarly B cell developmentPrimary B cell developmentEarly B cell progenitorsPre-B cell stageMature B cell compartmentB cell compartmentB cell progenitorsB-cell ontogenesisIL-7 stimulationImmature B cellsLymphoblastic leukemiaCell ontogenesis
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 activityCD25-Dependent Feedback Control of the B-Cell Receptor and Its Oncogenic Mimics in B-Cell Malignancies
Lee J, Kume K, Chen Z, Xiao G, Cosgun K, Chan L, Chen C, Pillai R, Chan W, Forman S, Kwak L, Zammarchi F, Van Berkel P, Weinstock D, Melnick A, Ngo V, Geng H, Luger S, Litzow M, Belot A, Uzel G, McManus M, Paietta E, Meffre E, Muschen M. CD25-Dependent Feedback Control of the B-Cell Receptor and Its Oncogenic Mimics in B-Cell Malignancies. Blood 2018, 132: 776. DOI: 10.1182/blood-2018-99-117553.Peer-Reviewed Original ResearchB cell receptorReceptor chainsB-cell malignanciesNormal B cell developmentT cell receptor signalingB-cell leukemiaHomology-directed repairCell membrane translocationPoor clinical outcomeB cell developmentFeedback regulatorTransplant recipientsNegative feedback regulatorNegative feedback regulationCytoplasmic tailClinical outcomesGene expressionMolecule downstreamCytokine receptor chainsBCR signalingT cellsB cell selectionGenetic mouse modelsProliferation signalsAstra Zeneca
2017
PON2 Exemplifies a Unique Dependency of B Cell Lineage ALL Cells on Detoxifying Lactonases
Xiao G, Hong C, Geng H, Muschen M. PON2 Exemplifies a Unique Dependency of B Cell Lineage ALL Cells on Detoxifying Lactonases. Blood 2017, 130: 882. DOI: 10.1182/blood.v130.suppl_1.882.882.Peer-Reviewed Original ResearchPatient-derived preB-cell lineageParaoxonase 2BCR-ABL1PON2 expressionB cell developmentB-lineageExpression levelsAdult clinical trialsPON2-deficient miceTime of diagnosisPoor clinical outcomeMRNA levelsBone marrow B cell precursorsSpecific treatment requirementsLactone metabolitesMultiple fetal tissuesG0/G1 phaseB cell precursorsNormal B cellsCell lineagesNormal hematopoietic cellsCell developmentPON2 deficiencyQuantitative RT-PCR
2016
Analysis of Ikaros tumor suppressor function in BCR-ABL1+ pre-B ALL reveals conserved target genes and biological pathways
Schjerven H, Ayongaba E, McLaughlin J, Cheng D, Eggesbø L, Lindeman I, Park E, Witte O, Smale S, Frietze S, Muschen M. Analysis of Ikaros tumor suppressor function in BCR-ABL1+ pre-B ALL reveals conserved target genes and biological pathways. The Journal Of Immunology 2016, 196: 122.6-122.6. DOI: 10.4049/jimmunol.196.supp.122.6.Peer-Reviewed Original ResearchTumor suppressor functionTarget genesDevelopmental stage-specific expressionSuppressor functionB cell developmentStem cell signatureZinc fingerHematopoietic developmentIkaros DNAIkaros functionEarly hematopoietic progenitor cellsHematopoietic progenitor cellsRNA sequencingReceptor c-kitMultiple genesBiological functionsInducible expressionTumor suppressionTumor suppressorBiological pathwaysSpecific expressionAdhesion pathwayCritical regulatorIkarosGenesRole of the transcription factor Ikaros in development of autoimmune disease
Schjerven H, Frietze S, Hai S, Hermiston M, Kogan S, Muschen M. Role of the transcription factor Ikaros in development of autoimmune disease. The Journal Of Immunology 2016, 196: 47.14-47.14. DOI: 10.4049/jimmunol.196.supp.47.14.Peer-Reviewed Original ResearchAnti-nuclear antibodiesAutoimmune diseasesB cellsB cell developmentSerum anti-nuclear antibodiesAuto-reactive B cellsReactive B cellsEx vivo analysisSpleen B cellsEx vivo studySecond signalBCR stimulationEarly B cell developmentRecent genome-wide association studiesVivo analysisMouse modelGenetic predispositionIkaros mutant miceTranscription factor IkarosMouse strainsDiseaseVivo studiesTargeted deletionZinc finger 1Autoimmunity