2017
Inhibiting DNA methylation activates cancer testis antigens and expression of the antigen processing and presentation machinery in colon and ovarian cancer cells
Siebenkäs C, Chiappinelli KB, Guzzetta AA, Sharma A, Jeschke J, Vatapalli R, Baylin SB, Ahuja N. Inhibiting DNA methylation activates cancer testis antigens and expression of the antigen processing and presentation machinery in colon and ovarian cancer cells. PLOS ONE 2017, 12: e0179501. PMID: 28622390, PMCID: PMC5473589, DOI: 10.1371/journal.pone.0179501.Peer-Reviewed Original ResearchConceptsSubset of patientsOvarian cancer cell linesAntigen processingCancer cell linesImmune therapyCancer testisSolid tumorsCell linesCancer cellsCancer-testis antigensHost immune systemOvarian cancer cellsTreatment time pointsEpigenetic therapyRelevant low dosesPresentation machineryImmune cellsOvarian cancerAntigen presentationMurine modelTestis antigensInnovative therapiesImmune systemLow dosesTherapy
2014
Immune regulation by low doses of the DNA methyltransferase inhibitor 5-azacitidine in common human epithelial cancers
Li H, Chiappinelli KB, Guzzetta AA, Easwaran H, Yen RW, Vatapalli R, Topper MJ, Luo J, Connolly RM, Azad NS, Stearns V, Pardoll DM, Davidson N, Jones PA, Slamon DJ, Baylin SB, Zahnow CA, Ahuja N. Immune regulation by low doses of the DNA methyltransferase inhibitor 5-azacitidine in common human epithelial cancers. Oncotarget 2014, 5: 587-598. PMID: 24583822, PMCID: PMC3996658, DOI: 10.18632/oncotarget.1782.Peer-Reviewed Original ResearchConceptsDNA methyltransferase inhibitorImmune gene setsImmune-stimulatory roleCytokines/chemokinesCancer-testis antigensGene expression subsetsMethyltransferase inhibitorEpigenetic therapyHuman epithelial cancersMechanism of actionCancer cell linesPrimary tumorGene Set Enrichment AnalysisImmunomodulatory pathwaysImmune regulationPotential therapyTestis antigensPatient biopsiesSolid tumorsEpithelial cancersMultiple cancersLow dosesTumor expression dataAntigen processingTherapy
2013
KRAS G>A mutation favors poor tumor differentiation but may not be associated with prognosis in patients with curatively resected duodenal adenocarcinoma
Fu T, Guzzetta AA, Jeschke J, Vatapalli R, Dave P, Hooker CM, Morgan R, Iacobuzio‐Donahue C, Liu B, Ahuja N. KRAS G>A mutation favors poor tumor differentiation but may not be associated with prognosis in patients with curatively resected duodenal adenocarcinoma. International Journal Of Cancer 2013, 132: 2502-2509. PMID: 23065691, PMCID: PMC3579006, DOI: 10.1002/ijc.27910.Peer-Reviewed Original ResearchMeSH KeywordsAdenocarcinomaBiomarkers, TumorCell DifferentiationDNA, NeoplasmDuodenal NeoplasmsFemaleHumansMaleMicrosatellite RepeatsMiddle AgedMutationNeoplasm Recurrence, LocalNeoplasm StagingPolymerase Chain ReactionPrognosisProto-Oncogene ProteinsProto-Oncogene Proteins p21(ras)Ras ProteinsSurvival RateConceptsPoor tumor differentiationKRAS GPositive lymph nodesDuodenal adenocarcinomaKRAS mutationsTumor differentiationMutation carriersDistant relapseLymph nodesMultivariate logistic regression analysisShorter relapse-free survivalFuture staging systemsRelapse-free survivalShorter overall survivalPossible prognostic roleLogistic regression analysisCurative resectionPoor OSOverall survivalPrognostic roleTumor characteristicsClinical outcomesClinicopathological characteristicsPoor prognosisPrognostic significance
2002
DNA Methylation and Environmental Exposures in Human Hepatocellular Carcinoma
Shen L, Ahuja N, Shen Y, Habib NA, Toyota M, Rashid A, Issa JP. DNA Methylation and Environmental Exposures in Human Hepatocellular Carcinoma. Journal Of The National Cancer Institute 2002, 94: 755-761. PMID: 12011226, DOI: 10.1093/jnci/94.10.755.Peer-Reviewed Original Research
2000
Aging, methylation and cancer.
Ahuja N, Issa JP. Aging, methylation and cancer. Cellular And Molecular Biology 2000, 15: 835-42. PMID: 10963127, DOI: 10.14670/hh-15.835.Peer-Reviewed Original ResearchConceptsAge-related methylationSuch age-related methylationPromoter-associated CpG islandsTumor suppressor geneGene functionDNA methylationCpG islandsMethylation changesFull methylationGene expressionMethylationGenesNovel targetNormal cellsColon cancerAlternate mechanismMost cancersEvidence pointsFundamental markMyoDIGF2HypermethylationDNAERMutationsDistinct genetic profiles in colorectal tumors with or without the CpG island methylator phenotype
Toyota M, Ohe-Toyota M, Ahuja N, Issa J. Distinct genetic profiles in colorectal tumors with or without the CpG island methylator phenotype. Proceedings Of The National Academy Of Sciences Of The United States Of America 2000, 97: 710-715. PMID: 10639144, PMCID: PMC15395, DOI: 10.1073/pnas.97.2.710.Peer-Reviewed Original ResearchMeSH KeywordsAdenomaBase SequenceColorectal NeoplasmsCpG IslandsDNA MethylationDNA Mutational AnalysisDNA, NeoplasmGenes, p16Genes, p53Genes, rasHumansMicrosatellite RepeatsMutationPhenotypePoint MutationPolymorphism, Single-Stranded ConformationalProtein Serine-Threonine KinasesReceptor, Transforming Growth Factor-beta Type IIReceptors, Transforming Growth Factor betaSequence DeletionTumor Cells, CulturedConceptsCpG island methylator phenotypeColorectal cancerK-RAS mutationsDifferent genetic lesionsActivation of oncogenesTumor suppressor geneMultiple CpG islandsColorectal tumorsMethylator phenotypeCpG islandsDistinct genetic profilesP53 mutationsEpigenetic alterationsMolecular diversitySuppressor geneGenetic lesionsNovel pathwayGroup of tumorsGenetic alterationsK-RASMutationsCancer developmentSimultaneous methylationGenes
1999
Identification of differentially methylated sequences in colorectal cancer by methylated CpG island amplification.
Toyota M, Ho C, Ahuja N, Jair KW, Li Q, Ohe-Toyota M, Baylin SB, Issa JP. Identification of differentially methylated sequences in colorectal cancer by methylated CpG island amplification. Cancer Research 1999, 59: 2307-12. PMID: 10344734.Peer-Reviewed Original Research5-MethylcytosineAdenocarcinomaChondroitin Sulfate ProteoglycansCloning, MolecularColorectal NeoplasmsCpG IslandsCytosineDNA MethylationDNA-Binding ProteinsDNA, NeoplasmDNA, RibosomalExonsEye ProteinsGenes, p16Homeobox Protein Nkx-2.5Homeodomain ProteinsHumansLectins, C-TypePaired Box Transcription FactorsPAX6 Transcription FactorPolymerase Chain ReactionRepressor ProteinsRNA, RibosomalSubtraction TechniqueTranscription FactorsTubulinVersicans