Featured Publications
Human PI3Kγ deficiency and its microbiota-dependent mouse model reveal immunodeficiency and tissue immunopathology
Takeda AJ, Maher TJ, Zhang Y, Lanahan SM, Bucklin ML, Compton SR, Tyler PM, Comrie WA, Matsuda M, Olivier KN, Pittaluga S, McElwee JJ, Long Priel DA, Kuhns DB, Williams RL, Mustillo PJ, Wymann MP, Koneti Rao V, Lucas CL. Human PI3Kγ deficiency and its microbiota-dependent mouse model reveal immunodeficiency and tissue immunopathology. Nature Communications 2019, 10: 4364. PMID: 31554793, PMCID: PMC6761123, DOI: 10.1038/s41467-019-12311-5.Peer-Reviewed Original ResearchMeSH KeywordsAdaptive ImmunityAnimalsCells, CulturedClass Ib Phosphatidylinositol 3-KinaseDisease Models, AnimalFemaleHumansImmunologic Deficiency SyndromesInflammationMaleMiceMice, Inbred C57BLMice, KnockoutMicrobiotaConceptsT cellsAppropriate adaptive immune responsePet store miceRegulatory T cellsCD4 T cellsAnti-inflammatory functionsAdaptive immune responsesLymphocytic pneumonitisPI3Kγ deficiencyTissue immunopathologyIL-23Memory CD8IL-12TLR stimulationImmune modulationImmune responseGSK3α/βMouse modelMemory BHuman patientsMiceDependent mannerP110γ catalytic subunitFunction mutationsDrug targetsNovel PIK3CD mutations affecting N-terminal residues of p110δ cause activated PI3Kδ syndrome (APDS) in humans
Takeda AJ, Zhang Y, Dornan GL, Siempelkamp BD, Jenkins ML, Matthews HF, McElwee JJ, Bi W, Seeborg FO, Su HC, Burke JE, Lucas CL. Novel PIK3CD mutations affecting N-terminal residues of p110δ cause activated PI3Kδ syndrome (APDS) in humans. Journal Of Allergy And Clinical Immunology 2017, 140: 1152-1156.e10. PMID: 28414062, PMCID: PMC5632585, DOI: 10.1016/j.jaci.2017.03.026.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultChildClass I Phosphatidylinositol 3-KinasesFemaleHumansImmunologic Deficiency SyndromesMaleMutationHeterozygous splice mutation in PIK3R1 causes human immunodeficiency with lymphoproliferation due to dominant activation of PI3K
Lucas CL, Zhang Y, Venida A, Wang Y, Hughes J, McElwee J, Butrick M, Matthews H, Price S, Biancalana M, Wang X, Richards M, Pozos T, Barlan I, Ozen A, Rao VK, Su HC, Lenardo MJ. Heterozygous splice mutation in PIK3R1 causes human immunodeficiency with lymphoproliferation due to dominant activation of PI3K. Journal Of Experimental Medicine 2014, 211: 2537-2547. PMID: 25488983, PMCID: PMC4267241, DOI: 10.1084/jem.20141759.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAlternative SplicingAntibody FormationBase SequenceCatalytic DomainCD8-Positive T-LymphocytesCell DifferentiationChild, PreschoolClass Ia Phosphatidylinositol 3-KinaseEnzyme ActivationExonsFemaleGenes, DominantHeterozygoteHumansImmunologic Deficiency SyndromesLymphoproliferative DisordersMaleMolecular Sequence DataMutationPedigreePhosphatidylinositol 3-KinasesProtein Structure, TertiarySequence DeletionSignal TransductionTelomereTOR Serine-Threonine KinasesConceptsT cellsPI3KPI3K subunitsSenescent T cellsRecurrent sinopulmonary infectionsHeterozygous splice site mutationSplice site mutationEffector cellsPeripheral bloodSinopulmonary infectionsHuman immunodeficiencyHeterozygous splice mutationsImmunodeficiency diseaseHealthy subjectsUnique disorderHeterozygous mutationsClass IaPatient cellsProminent expansionK subunitLymphoproliferationPatientsSimilar diseasesShort telomeresDiseaseDominant-activating germline mutations in the gene encoding the PI(3)K catalytic subunit p110δ result in T cell senescence and human immunodeficiency
Lucas CL, Kuehn HS, Zhao F, Niemela JE, Deenick EK, Palendira U, Avery DT, Moens L, Cannons JL, Biancalana M, Stoddard J, Ouyang W, Frucht DM, Rao VK, Atkinson TP, Agharahimi A, Hussey AA, Folio LR, Olivier KN, Fleisher TA, Pittaluga S, Holland SM, Cohen JI, Oliveira JB, Tangye SG, Schwartzberg PL, Lenardo MJ, Uzel G. Dominant-activating germline mutations in the gene encoding the PI(3)K catalytic subunit p110δ result in T cell senescence and human immunodeficiency. Nature Immunology 2013, 15: 88-97. PMID: 24165795, PMCID: PMC4209962, DOI: 10.1038/ni.2771.Peer-Reviewed Original ResearchMeSH KeywordsAntibiotics, AntineoplasticCell DifferentiationCells, CulturedCellular SenescenceClass I Phosphatidylinositol 3-KinasesCytomegalovirus InfectionsEpstein-Barr Virus InfectionsFemaleGenes, DominantGerm-Line MutationHumansImmunoblottingImmunologic Deficiency SyndromesMalePedigreePhosphatidylinositol 3-KinasesPhosphorylationProto-Oncogene Proteins c-aktSirolimusT-LymphocytesTOR Serine-Threonine KinasesViremia
2020
Germline biallelic PIK3CG mutations in a multifaceted immunodeficiency with immune dysregulation
Thian M, Hoeger B, Kamnev A, Poyer F, Bal S, Caldera M, Jiménez-Heredia R, Huemer J, Pickl WF, Groß M, Ehl S, Lucas CL, Menche J, Hutter C, Attarbaschi A, Dupré L, Boztug K. Germline biallelic PIK3CG mutations in a multifaceted immunodeficiency with immune dysregulation. Haematologica 2020, 105: e488-e488. PMID: 33054089, PMCID: PMC7556668, DOI: 10.3324/haematol.2019.231399.Peer-Reviewed Original ResearchClass Ib Phosphatidylinositol 3-KinaseGerm CellsGerm-Line MutationHumansImmunologic Deficiency Syndromes
2017
Effective “activated PI3Kδ syndrome”–targeted therapy with the PI3Kδ inhibitor leniolisib
Rao VK, Webster S, Dalm VASH, Šedivá A, van Hagen PM, Holland S, Rosenzweig SD, Christ AD, Sloth B, Cabanski M, Joshi AD, de Buck S, Doucet J, Guerini D, Kalis C, Pylvaenaeinen I, Soldermann N, Kashyap A, Uzel G, Lenardo MJ, Patel DD, Lucas CL, Burkhart C. Effective “activated PI3Kδ syndrome”–targeted therapy with the PI3Kδ inhibitor leniolisib. Blood 2017, 130: 2307-2316. PMID: 28972011, PMCID: PMC5701526, DOI: 10.1182/blood-2017-08-801191.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsChemokinesChildChild, PreschoolClass I Phosphatidylinositol 3-KinasesDemographyDose-Response Relationship, DrugFemaleHumansImmunoglobulin MImmunologic Deficiency SyndromesInfantLymph NodesLymphocyte ActivationMaleMolecular Targeted TherapyMutationOrgan SizePhenotypePrimary Immunodeficiency DiseasesProtein Kinase InhibitorsPyridinesPyrimidinesRatsSpleenT-LymphocytesTOR Serine-Threonine KinasesTransfectionConceptsImmune dysregulationT cellsB cellsElevated serum immunoglobulin MPI3K/Akt pathway activityDose-escalation studyLymph node sizeSenescent T cellsWeeks of treatmentDose-dependent suppressionTransitional B cellsTumor necrosis factorDose-dependent reductionPrecision medicine therapiesSerum immunoglobulin MNaive B cellsT cell blastsAkt pathway activityAPDS patientsPI3Kδ pathwayInflammatory markersPD-1Clinical parametersSpleen volumeImmune deficiencyConformational disruption of PI3Kδ regulation by immunodeficiency mutations in PIK3CD and PIK3R1
Dornan GL, Siempelkamp BD, Jenkins ML, Vadas O, Lucas CL, Burke JE. Conformational disruption of PI3Kδ regulation by immunodeficiency mutations in PIK3CD and PIK3R1. Proceedings Of The National Academy Of Sciences Of The United States Of America 2017, 114: 1982-1987. PMID: 28167755, PMCID: PMC5338455, DOI: 10.1073/pnas.1617244114.Peer-Reviewed Original ResearchMeSH KeywordsCatalytic DomainCell MembraneClass I Phosphatidylinositol 3-KinasesClass Ia Phosphatidylinositol 3-KinaseEnzyme AssaysEnzyme InhibitorsGain of Function MutationHumansImmunologic Deficiency SyndromesMass SpectrometryModels, MolecularPhenotypePhosphatidylinositol 3-KinasesPrimary Immunodeficiency DiseasesProtein ConformationPurinesQuinazolinonesRandomized Controlled Trials as TopicSequence DeletionConceptsRegulatory subunitCatalytic subunitClass IA catalytic subunitsHydrogen-deuterium exchange mass spectrometryOncogenic mutationsP85 regulatory subunitExchange mass spectrometryClass IA phosphoinositideP85α regulatory subunitPI3K delta syndromeCSH2 domainMolecular basisP110δ catalytic subunitMolecular mechanismsBiochemical assaysSubunits
2016
PI3Kδ and primary immunodeficiencies
Lucas CL, Chandra A, Nejentsev S, Condliffe AM, Okkenhaug K. PI3Kδ and primary immunodeficiencies. Nature Reviews Immunology 2016, 16: 702-714. PMID: 27616589, PMCID: PMC5291318, DOI: 10.1038/nri.2016.93.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsCell DifferentiationCellular SenescenceEnzyme ActivationGene Expression RegulationHumansImmune SystemImmunityImmunologic Deficiency SyndromesLymphocyte ActivationLymphocytesMolecular Targeted TherapyMutationPhosphatidylinositol 3-KinasesPhosphoinositide-3 Kinase InhibitorsProtein SubunitsSignal TransductionConceptsPrimary immunodeficiencyT cellsHeterozygous mutationsAntibody replacement therapyStructural lung damageRegulatory T cellsT cell senescencePI3Kδ inhibitor idelalisibRecurrent sinopulmonary infectionsB-cell malignanciesHerpes family virusesMTOR inhibitor rapamycinPI3Kδ syndromeMost patientsLung damageLymphoma trialsReplacement therapyLymphoproliferative diseaseSinopulmonary infectionsAntibody responseP110δ catalytic subunitCell malignanciesB cellsImmune systemPatients