2024
TRF2–RAP1 represses RAD51-dependent homology-directed telomere repair by promoting BLM-mediated D-loop unwinding and inhibiting BLM–DNA2-dependent 5′-end resection
Liang F, Rai R, Sodeinde T, Chang S. TRF2–RAP1 represses RAD51-dependent homology-directed telomere repair by promoting BLM-mediated D-loop unwinding and inhibiting BLM–DNA2-dependent 5′-end resection. Nucleic Acids Research 2024, 52: 9695-9709. PMID: 39082275, PMCID: PMC11381343, DOI: 10.1093/nar/gkae642.Peer-Reviewed Original ResearchHomology-directed repairTelomeric D-loopsD-loopChromosome fusionsD-loop formationSingle-stranded telomeric overhangsHomology searchTelomere clusteringTRFH domainPurified proteinBasic domainBlm mutantsProtect telomeresGenomic instabilityTelomeric overhangEnd resectionTRF2Molecular mechanismsTelomereTelomere lossMolecular pathwaysTelomere repairGenomeMutantsRap1
2013
Cancer chromosomes going to POT1
Chang S. Cancer chromosomes going to POT1. Nature Genetics 2013, 45: 473-475. PMID: 23619786, PMCID: PMC4040961, DOI: 10.1038/ng.2617.Peer-Reviewed Original Research
2011
The RAG2 C terminus suppresses genomic instability and lymphomagenesis
Deriano L, Chaumeil J, Coussens M, Multani A, Chou Y, Alekseyenko AV, Chang S, Skok JA, Roth DB. The RAG2 C terminus suppresses genomic instability and lymphomagenesis. Nature 2011, 471: 119-123. PMID: 21368836, PMCID: PMC3174233, DOI: 10.1038/nature09755.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAtaxia Telangiectasia Mutated ProteinsCell Cycle ProteinsChromosome DeletionChromosomes, MammalianDisease ProgressionDNA-Binding ProteinsGene Rearrangement, T-LymphocyteGenes, Immunoglobulin Heavy ChainGenes, p53Genomic InstabilityIn Situ Hybridization, FluorescenceKaplan-Meier EstimateLymphomaMiceProtein Serine-Threonine KinasesReceptors, Antigen, T-CellRecombination, GeneticThymus GlandTranslocation, GeneticTumor Suppressor ProteinsConceptsRAG2 C terminusGenomic instabilityC-terminusTCRα/δDNA double-strand breaksT-cell receptor lociDouble-strand breaksGenomic stabilityComplex chromosomal translocationReceptor locusChromosomal translocationsSimilar defectsLymphomagenesisThymic lymphomasTerminusLociRecombinaseTailRAG2TranslocationDeletionRecombinationRoleLymphoid malignanciesMice
2010
The telomeric protein SNM1B/Apollo is required for normal cell proliferation and embryonic development
Akhter S, Lam YC, Chang S, Legerski RJ. The telomeric protein SNM1B/Apollo is required for normal cell proliferation and embryonic development. Aging Cell 2010, 9: 1047-1056. PMID: 20854421, PMCID: PMC3719988, DOI: 10.1111/j.1474-9726.2010.00631.x.Peer-Reviewed Original ResearchConceptsMutant mouse embryonic fibroblastsSNM1B/ApolloCell proliferation defectMouse embryonic fibroblastsNormal cell proliferationDevelopmental failureHomozygous null miceEnd fusionsProliferation defectEmbryonic developmentGenomic instabilityEmbryonic fibroblastsTelomeric endDevelopmental defectsCell deathVivo roleCell proliferationImpaired proliferationTelomeresNull miceMutant miceAurora Kinase A Promotes Ovarian Tumorigenesis through Dysregulation of the Cell Cycle and Suppression of BRCA2
Yang G, Chang B, Yang F, Guo X, Cai K, Xiao X, Wang H, Sen S, Hung M, Mills G, Chang S, Multani A, Mercado-Uribe I, Liu J. Aurora Kinase A Promotes Ovarian Tumorigenesis through Dysregulation of the Cell Cycle and Suppression of BRCA2. Clinical Cancer Research 2010, 16: 3171-3181. PMID: 20423983, PMCID: PMC2930838, DOI: 10.1158/1078-0432.ccr-09-3171.Peer-Reviewed Original ResearchConceptsDNA damage responseGenomic instabilitySmall hairpin RNADamage responseExpression ratioCell cycle progressionOvarian cancer cell line SKOV3Multiple human cancersColon cancer samplesKnockdown of AuroraCell cycle alterationsMitotic spindleCell cycle dysregulationCell line SKOV3Cycle progressionExpression of AuroraMolecular mechanismsCell cycleAurora kinasesHairpin RNATumor growthCentrosome amplificationHuman cancersHuman ovarian cancerHigh-grade ovarian serous carcinoma
2009
Replicative Senescence as an Intrinsic Tumor-Suppressor Mechanism
Chang S. Replicative Senescence as an Intrinsic Tumor-Suppressor Mechanism. 2009, 201-217. DOI: 10.1007/978-1-4419-1075-2_8.Peer-Reviewed Original ResearchDysfunctional telomeresGenomic instabilityIntrinsic tumor suppressor mechanismsDNA damage response pathwayProtein-DNA complexesDamage response pathwayTumor suppressor mechanismEukaryotic chromosomal endsEnds of chromosomesP53-dependent senescenceAbsence of p53Complex cytogenetic profileTriggers senescenceDDR pathwaysResponse pathwaysChromosomal endsReplicative senescenceTelomere dysfunctionCellular senescenceOnset of cancerTelomeresSenescenceCancer progressionEpithelial tissuesHuman carcinomas
2008
Mre11 Nuclease Activity Has Essential Roles in DNA Repair and Genomic Stability Distinct from ATM Activation
Buis J, Wu Y, Deng Y, Leddon J, Westfield G, Eckersdorff M, Sekiguchi JM, Chang S, Ferguson DO. Mre11 Nuclease Activity Has Essential Roles in DNA Repair and Genomic Stability Distinct from ATM Activation. Cell 2008, 135: 85-96. PMID: 18854157, PMCID: PMC2645868, DOI: 10.1016/j.cell.2008.08.015.Peer-Reviewed Original ResearchMeSH KeywordsAmino Acid SequenceAnimalsAtaxia Telangiectasia Mutated ProteinsCell Cycle ProteinsCell Line, TransformedCell ProliferationDNA Breaks, Double-StrandedDNA DamageDNA RepairDNA Repair EnzymesDNA-Binding ProteinsFibroblastsGenomic InstabilityMiceMRE11 Homologue ProteinProtein Serine-Threonine KinasesRecombination, GeneticTelomereTumor Suppressor ProteinsConceptsMre11/Rad50/Nbs1Nuclease activityDNA repairDNA damageDramatic genomic instabilityFunctions of Mre11Early embryonic lethalityMre11 nuclease activityATM kinaseATR kinaseEmbryonic lethalityGenomic stabilityATM activationMRN complexNucleolytic processingBreak repairDNA endsATM signalingMouse alleleGenomic instabilityDNA nuclease activityNuclease deficienciesEssential functionsUnknown roleMre11Dual roles of telomere dysfunction in initiation and suppression of tumorigenesis
Cosme-Blanco W, Chang S. Dual roles of telomere dysfunction in initiation and suppression of tumorigenesis. Experimental Cell Research 2008, 314: 1973-1979. PMID: 18448098, PMCID: PMC3690559, DOI: 10.1016/j.yexcr.2008.03.011.Peer-Reviewed Original ResearchConceptsDNA double-strand breaksDysfunctional telomeresGenomic instabilityPotent tumor suppressor mechanismTumorigenic potentialSimple repeat sequencesTumor suppressor mechanismDouble-strand breaksCell tumorigenic potentialSuppression of tumorigenesisCancer cellsChromosomal endsTelomere dysfunctionCellular senescenceRepeat sequencesGenetic changesTelomeresGenetic lesionsP53 pathwayTumor initiationDicentric chromosomesSuppressor mechanismIntact p53 pathwayHuman carcinomasRare cellsInitiation of Genomic Instability, Cellular Senescence, and Organismal Aging by Dysfunctional Telomeres
Chang S. Initiation of Genomic Instability, Cellular Senescence, and Organismal Aging by Dysfunctional Telomeres. 2008, 57-75. DOI: 10.1007/978-3-540-73709-4_4.Peer-Reviewed Original ResearchDysfunctional telomeresOrganismal agingCellular senescenceDNA damage responseLinear chromosomesShelterin complexDamage responseTelomeric repeatsGenomic instabilityTelomeric structureTelomeresSenescenceFunction resultsProteinImportant roleChromosomesMouse modelRepeatsTelomeraseDNAProgressive lossP53ActivationComplexesAging
2007
Role of telomeres and telomerase in genomic instability, senescence and cancer
Deng Y, Chang S. Role of telomeres and telomerase in genomic instability, senescence and cancer. Laboratory Investigation 2007, 87: 1071-1076. PMID: 17767195, DOI: 10.1038/labinvest.3700673.Peer-Reviewed Original ResearchConceptsHuman cancersAnti-telomerase therapyAttractive therapeutic targetClinical trialsTherapeutic targetDNA damage responseRole of telomeresAbsence of p53Progressive lossHuman carcinomasSuppress tumorigenesisCancerLinear chromosomesCellular senescenceDamage responseTelomeric repeatsDysfunctional telomeresGenomic instabilityTelomeric structureChromosomal instabilityTelomeresP53TelomeraseImportant mechanismFunction results
2005
Elevated telomere-telomere recombination in WRN-deficient, telomere dysfunctional cells promotes escape from senescence and engagement of the ALT pathway
Laud PR, Multani AS, Bailey SM, Wu L, Ma J, Kingsley C, Lebel M, Pathak S, DePinho RA, Chang S. Elevated telomere-telomere recombination in WRN-deficient, telomere dysfunctional cells promotes escape from senescence and engagement of the ALT pathway. Genes & Development 2005, 19: 2560-2570. PMID: 16264192, PMCID: PMC1276730, DOI: 10.1101/gad.1321305.Peer-Reviewed Original ResearchConceptsWerner syndromeSister chromatidsT-SCETelomere sister chromatid exchangeElevated recombination ratesActivation of ALTWRN functionAberrant recombinationGenomic instabilityALT pathwayChromosomal aberrationsChromosomal instabilityTelomeresPremature agingDysfunctional cellsTumor formationChromatidsSister chromatid exchangesPathwayChromatid exchangesRecombinationRecombination rateCellsWRNMutantsTrp53R172H and KrasG12D cooperate to promote chromosomal instability and widely metastatic pancreatic ductal adenocarcinoma in mice
Hingorani SR, Wang L, Multani AS, Combs C, Deramaudt TB, Hruban RH, Rustgi AK, Chang S, Tuveson DA. Trp53R172H and KrasG12D cooperate to promote chromosomal instability and widely metastatic pancreatic ductal adenocarcinoma in mice. Cancer Cell 2005, 7: 469-483. PMID: 15894267, DOI: 10.1016/j.ccr.2005.04.023.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsCadherinsCarcinoma, Pancreatic DuctalCentrosomeChromosomal InstabilityChromosome AberrationsCytogenetic AnalysisDisease ProgressionGene ExpressionGene Expression RegulationGene RearrangementGenes, Tumor SuppressorHomeodomain ProteinsIntegrasesMiceMice, Inbred C57BLMice, Inbred StrainsMice, Mutant StrainsMice, TransgenicMutation, MissenseNeoplasm MetastasisOncogene Proteins v-erbBProto-Oncogene Proteins p21(ras)Ras ProteinsSurvival AnalysisTelomereTrans-ActivatorsTranslocation, GeneticTumor Suppressor Protein p53ConceptsPancreatic ductal adenocarcinomaTumor suppressor gene pathwaysDistinct genetic pathwaysGenetic requirementsGenetic pathwaysGenomic instabilityGene pathwaysChromosomal instabilityEndogenous expressionHuman diseasesNonreciprocal translocationsDuctal adenocarcinomaMetastatic pancreatic ductal adenocarcinomaHuman carcinomasDisease pathogenesisMouse pancreasDifferent biological behaviorPathwayMetastatic carcinomaPrimary carcinomaTreatment strategiesCarcinomaBiological behaviorDevelopment of detectionTranslocationModeling premature aging syndromes with the telomerase knockout mouse.
Chang S. Modeling premature aging syndromes with the telomerase knockout mouse. 2005, 5: 153-8. PMID: 15974868, DOI: 10.2174/1566524053586662.Peer-Reviewed Original ResearchConceptsTelomerase knockout miceMammalian agingGenomic instabilityDNA damage pathwayPremature aging syndromesCellular declineMolecular basisAging syndromesAging processDamage pathwayKnockout miceMolecular pathwaysShort telomeresHuman agingPrimate model systemMouse modelModel systemBiological mechanismsPhenotypePhysiological changesPathwayUnprecedented opportunityDeleterious effectsTelomeresMice
2004
Essential role of limiting telomeres in the pathogenesis of Werner syndrome
Chang S, Multani AS, Cabrera NG, Naylor ML, Laud P, Lombard D, Pathak S, Guarente L, DePinho RA. Essential role of limiting telomeres in the pathogenesis of Werner syndrome. Nature Genetics 2004, 36: 877-882. PMID: 15235603, DOI: 10.1038/ng1389.Peer-Reviewed Original ResearchConceptsWerner syndromeCultured cellsComplex cellular phenotypesElevated genomic instabilityDNA damage fociPremature aging syndromesWRN deficiencyReplicative senescenceCellular phenotypesGenomic instabilityAging syndromesGenetic dataMutational inactivationPremature senescenceChromosomal instabilityTelomerase expressionHair grayingPremature agingDisease phenotypeEssential roleWRNMice nullSenescenceAutosomal recessive diseaseType II diabetes
2001
Modeling chromosomal instability and epithelial carcinogenesis in the telomerase-deficient mouse
Chang S, Khoo C, DePinho R. Modeling chromosomal instability and epithelial carcinogenesis in the telomerase-deficient mouse. Seminars In Cancer Biology 2001, 11: 227-238. PMID: 11407947, DOI: 10.1006/scbi.2000.0374.Peer-Reviewed Original ResearchConceptsComplex cytogenetic profileHuman carcinomasChromosomal structural aberrationsTelomerase-deficient miceEukaryotic chromosomesNucleoprotein complexesGenomic instabilitySpecies distinctionP53 mutant miceChromosomal instabilityTumor suppressor gene mutationsShort telomeresSuppressor gene mutationsMutant miceStructural aberrationsEpithelial carcinogenesisGene mutationsCytogenetic profileChromosomesTelomeresMiceMutationsRegulationHumansAneuploidy
2000
The nonhomologous end-joining pathway of DNA repair is required for genomic stability and the suppression of translocations
Ferguson D, Sekiguchi J, Chang S, Frank K, Gao Y, DePinho R, Alt F. The nonhomologous end-joining pathway of DNA repair is required for genomic stability and the suppression of translocations. Proceedings Of The National Academy Of Sciences Of The United States Of America 2000, 97: 6630-6633. PMID: 10823907, PMCID: PMC18682, DOI: 10.1073/pnas.110152897.Peer-Reviewed Original ResearchConceptsMouse embryonic fibroblastsEnd-joining pathwayGenomic stabilityNonreciprocal translocationsNonhomologous DNA end-joining pathwayExogenous DNA damaging agentsNonhomologous end-joining pathwayCell cycle checkpoint proteinsDNA-dependent proteinDramatic genomic instabilityDNA ligase IVAlternative repair pathwaysDNA damaging agentsMammalian genomesGenome instabilityLigase IVNonhomologous DNADNA repairGenomic instabilityRepair pathwaysChromosomal fragmentationEmbryonic fibroblastsCheckpoint proteinsDamaging agentsSuppression of translocation