2023
Intratumor spatial heterogeneity in programmed death-ligand 1 (PD-L1) protein expression in early-stage breast cancer
Kahn A, Golestani R, Harigopal M, Pusztai L. Intratumor spatial heterogeneity in programmed death-ligand 1 (PD-L1) protein expression in early-stage breast cancer. Breast Cancer Research And Treatment 2023, 201: 289-298. PMID: 37378695, DOI: 10.1007/s10549-023-06977-1.Peer-Reviewed Original ResearchConceptsTriple-negative breast cancerPD-L1 expressionBreast cancerPD-L1Metastatic triple-negative breast cancerPD-L1 positive casesEarly-stage breast cancerPD-L1 protein expressionImmune checkpoint inhibitorsPD-L1 positivityPD-L1 statusProtein expressionWhole study populationPrimary breast tumorsNegative breast cancerConcordant negative resultsCheckpoint inhibitorsMultiple biopsiesPositive cancersCohen's kappa coefficientStudy populationE1L3N antibodyDiscordance rateBreast tumorsPositive cases
2022
CECR2 drives breast cancer metastasis by promoting NF-κB signaling and macrophage-mediated immune suppression
Zhang M, Liu ZZ, Aoshima K, Cai WL, Sun H, Xu T, Zhang Y, An Y, Chen JF, Chan LH, Aoshima A, Lang SM, Tang Z, Che X, Li Y, Rutter SJ, Bossuyt V, Chen X, Morrow JS, Pusztai L, Rimm DL, Yin M, Yan Q. CECR2 drives breast cancer metastasis by promoting NF-κB signaling and macrophage-mediated immune suppression. Science Translational Medicine 2022, 14: eabf5473. PMID: 35108062, PMCID: PMC9003667, DOI: 10.1126/scitranslmed.abf5473.Peer-Reviewed Original ResearchConceptsBreast cancer metastasisReticuloendotheliosis viral oncogene homolog ACancer metastasisImmune suppressionM2 macrophagesWorse metastasis-free survivalMetastatic breast cancerMetastasis-free survivalV-rel avian reticuloendotheliosis viral oncogene homolog ACancer-related deathPrimary breast tumorsMultiple mouse modelsNF-κB signalingImmunocompetent settingNuclear factor-κB family membersMetastasis-promoting genesDistant metastasisMetastatic sitesPrimary tumorEffective therapyBreast cancerMetastasis treatmentMouse modelBreast tumorsMetastasis
2016
Quantitative assessment of the spatial heterogeneity of tumor-infiltrating lymphocytes in breast cancer
Mani NL, Schalper KA, Hatzis C, Saglam O, Tavassoli F, Butler M, Chagpar AB, Pusztai L, Rimm DL. Quantitative assessment of the spatial heterogeneity of tumor-infiltrating lymphocytes in breast cancer. Breast Cancer Research 2016, 18: 78. PMID: 27473061, PMCID: PMC4966732, DOI: 10.1186/s13058-016-0737-x.Peer-Reviewed Original ResearchConceptsIntraclass correlation coefficientQuantitative immunofluorescenceBreast cancerSame cancerSingle biopsyMultiplexed quantitative immunofluorescenceTumor-infiltrating lymphocytesPotential predictive markerPrimary breast carcinomaCytokeratin-positive epithelial cellsCD20-positive lymphocytesCD8 levelsLymphocyte scoreQIF scoresLymphocyte countLymphocyte subpopulationsMultiple biopsiesSubpopulation countsPredictive markerPrognostic informationBreast carcinomaBiopsyB lymphocytesCD3Breast tumors
2013
Ink4a/Arf−/− and HRAS(G12V) transform mouse mammary cells into triple-negative breast cancer containing tumorigenic CD49f− quiescent cells
Kai K, Iwamoto T, Kobayashi T, Arima Y, Takamoto Y, Ohnishi N, Bartholomeusz C, Horii R, Akiyama F, Hortobagyi GN, Pusztai L, Saya H, Ueno NT. Ink4a/Arf−/− and HRAS(G12V) transform mouse mammary cells into triple-negative breast cancer containing tumorigenic CD49f− quiescent cells. Oncogene 2013, 33: 440-448. PMID: 23376849, PMCID: PMC3957346, DOI: 10.1038/onc.2012.609.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsCell Transformation, NeoplasticCyclin-Dependent Kinase Inhibitor p16FemaleFlow CytometryImmunohistochemistryIntegrin alpha6Mammary Neoplasms, ExperimentalMiceMice, Inbred C57BLMice, KnockoutNeoplastic Stem CellsOligonucleotide Array Sequence AnalysisProto-Oncogene Proteins p21(ras)Real-Time Polymerase Chain ReactionTriple Negative Breast NeoplasmsConceptsTriple-negative breast cancerHuman triple-negative breast cancerBreast cancerTumor-initiating potentialIntratumoral heterogeneityInk4a/Claudin-low breast cancerMouse mammary tumor modelNon-mammary tumorsHigh tumor-initiating potentialMouse mammary fat padMammary cellsMammary fat padMammary tumor modelIndividual breast tumorsTumor precursor cellsQuiescent cellsTumor-initiating cellsPathological featuresProgesterone receptorMammary tumorsEstrogen receptorAnimal modelsFat padBreast tumors
2012
Distinct tumor protein p53 mutants in breast cancer subgroups
Dumay A, Feugeas J, Wittmer E, Lehmann‐Che J, Bertheau P, Espié M, Plassa L, Cottu P, Marty M, André F, Sotiriou C, Pusztai L, de Thé H. Distinct tumor protein p53 mutants in breast cancer subgroups. International Journal Of Cancer 2012, 132: 1227-1231. PMID: 22886769, DOI: 10.1002/ijc.27767.Peer-Reviewed Original ResearchConceptsBasal tumorsLuminal tumorsMolecular apocrine tumoursDifferent breast cancer subtypesBreast cancer subgroupsBreast cancer subtypesP53 mutation statusApocrine tumorsTumor protein p53Molecular apocrineCancer subgroupsBreast cancerTP53 alterationsMutation statusBreast tumorsLoss of functionCancer subtypesTumorsComplex mutationsP53 gainHigh frequencyHigh rateDifferent functional consequencesMissense mutationsProtein p53
2011
P2-02-09: TP53 Mutation Patterns in Breast Cancer Subgroups.
Dumay A, Feugeas J, Wittmer E, Lehmann-Che J, Bertheau P, Espié M, de C, André F, Sotiriou C, Pusztai L, de T. P2-02-09: TP53 Mutation Patterns in Breast Cancer Subgroups. Cancer Research 2011, 71: p2-02-09-p2-02-09. DOI: 10.1158/0008-5472.sabcs11-p2-02-09.Peer-Reviewed Original ResearchLuminal tumorsMolecular apocrineBreast cancerTP53 mutationsDifferent molecular subclassesLuminal B subgroupMolecular apocrine tumoursTruncating mutationsBreast cancer subgroupsBreast cancer subclassesTP53 mutation frequencyFunctional assaysMutation typeTP53 mutation patternsHigh rateTumor protein 53Missense mutationsApocrine tumorsBasal tumorsLuminal subgroupCancer subgroupsP53 gene inactivationMolecular subclassesBreast tumorsSpecific subtypes
2009
CXCR4 Expression in Early Breast Cancer and Risk of Distant Recurrence
Andre F, Xia W, Conforti R, Wei Y, Boulet T, Tomasic G, Spielmann M, Zoubir M, Berrada N, Arriagada R, Hortobagyi GN, Hung M, Pusztai L, Delaloge S, Michiels S, Cristofanilli M. CXCR4 Expression in Early Breast Cancer and Risk of Distant Recurrence. The Oncologist 2009, 14: 1182-1188. PMID: 19939894, DOI: 10.1634/theoncologist.2009-0161.Peer-Reviewed Original ResearchConceptsPrimary breast tumorsCXCR4 expressionBone metastasesBreast tumorsClinical characteristicsDistant metastasisPrognostic valueHigh riskLigand stromal cell-derived factor-1Stromal cell-derived factor-1Cell-derived factor-1Bone-targeted agentsEarly breast cancerProspective clinical trialsCox regression modelNovel adjuvant strategyExpression of CXCR4Chemokine receptor 4Early metastatic processOccurrence of metastasesSpecific organ sitesCXCR4 tumorsDistant recurrenceOverall survivalAdjuvant strategiesInhibition of Lipocalin 2 Impairs Breast Tumorigenesis and Metastasis
Leng X, Ding T, Lin H, Wang Y, Hu L, Hu J, Feig B, Zhang W, Pusztai L, Symmans WF, Wu Y, Arlinghaus RB. Inhibition of Lipocalin 2 Impairs Breast Tumorigenesis and Metastasis. Cancer Research 2009, 69: 8579-8584. PMID: 19887608, DOI: 10.1158/0008-5472.can-09-1934.Peer-Reviewed Original ResearchMeSH KeywordsAcute-Phase ProteinsAnimalsBlotting, WesternBreast NeoplasmsCell Line, TumorFemaleFlow CytometryGene Expression Regulation, NeoplasticHumansImmunohistochemistryLipocalin-2LipocalinsMatrix Metalloproteinase 9MiceMice, KnockoutNeoplasm InvasivenessNF-kappa BOncogene ProteinsReceptor, ErbB-2Reverse Transcriptase Polymerase Chain ReactionSignal TransductionConceptsLCN2 expressionBreast cancerBreast tumorigenesisMatrix metalloproteinase-9 activityTumor formationMammary tumor mouse modelMammary tumor formationMetalloproteinase-9 activityMatrix metalloproteinase-9Breast cancer therapyTumor mouse modelBreast tumor formationAkt/NFBreast cancer cellsMurine breast tumorsInhibitory monoclonal antibodiesLCN2 functionsLung metastasesLipocalin-2Metalloproteinase-9Mouse modelAggressive typeBreast tumorsKappaB pathwayMetastasis
2006
Impact of Preoperative Versus Postoperative Chemotherapy on the Extent and Number of Surgical Procedures in Patients Treated in Randomized Clinical Trials for Breast Cancer
Boughey JC, Peintinger F, Meric-Bernstam F, Perry AC, Hunt KK, Babiera GV, Singletary SE, Bedrosian I, Lucci A, Buzdar AU, Pusztai L, Kuerer HM. Impact of Preoperative Versus Postoperative Chemotherapy on the Extent and Number of Surgical Procedures in Patients Treated in Randomized Clinical Trials for Breast Cancer. Annals Of Surgery 2006, 124: 130-136. PMID: 16926572, PMCID: PMC1856540, DOI: 10.1097/01.sla.0000234897.38950.5c.Peer-Reviewed Original ResearchConceptsBreast-conserving therapyRe-excision ratesExtent of surgeryPreoperative chemotherapyInitial tumor sizeRandomized clinical trialsBreast operationsBreast cancerSurgical proceduresBCT patientsPostoperative chemotherapyBreast tissueTumor sizeClinical trialsRates of BCTProspective randomized clinical trialsFinal surgical procedureLarge breast tumorsConsecutive patientsExtensive resectionChemotherapyPatientsVolume of tissueBreast tumorsT1-T3