2022
Ig Enhancers Increase RNA Polymerase II Stalling at Somatic Hypermutation Target Sequences.
Tarsalainen A, Maman Y, Meng FL, Kyläniemi MK, Soikkeli A, Budzyńska P, McDonald JJ, Šenigl F, Alt FW, Schatz DG, Alinikula J. Ig Enhancers Increase RNA Polymerase II Stalling at Somatic Hypermutation Target Sequences. The Journal Of Immunology 2022, 208: 143-154. PMID: 34862258, PMCID: PMC8702490, DOI: 10.4049/jimmunol.2100923.Peer-Reviewed Original ResearchConceptsPol IIMutating geneSomatic hypermutationTarget genesChicken DT40 B cellsRNA polymerase II stallingIg genesHistone variant H3.3Locus-specific targetingPol II occupancyAID-mediated mutationsDT40 B cellsRNA polymerase IILevels of H3K27acFull-length transcriptsVariant H3.3Antisense transcriptionTranscriptional outputPolymerase IIGenetic diversityMechanistic basisBurkitt's lymphoma cellsGeneration of AbsGenesDIVAC
2016
Bcl6 Is Required for Somatic Hypermutation and Gene Conversion in Chicken DT40 Cells
Williams AM, Maman Y, Alinikula J, Schatz DG. Bcl6 Is Required for Somatic Hypermutation and Gene Conversion in Chicken DT40 Cells. PLOS ONE 2016, 11: e0149146. PMID: 26900682, PMCID: PMC4762950, DOI: 10.1371/journal.pone.0149146.Peer-Reviewed Original ResearchConceptsDT40 cellsGene conversionTarget genesClass switch recombinationGene bodiesSomatic hypermutationB cell gene expression programChicken DT40 B cellsBCL6 functionCell gene expression programChicken DT40 cellsDT40 B cellsGene expression programsRNA polymerase IIDeficient DT40 cellsTranscription start siteExpression of AIDAbsence of Bcl6High-level expressionB cellsExpression programsPolymerase IIPol IIStart siteTranscriptional features
2013
A Critical Context-Dependent Role for E Boxes in the Targeting of Somatic Hypermutation
McDonald JJ, Alinikula J, Buerstedde JM, Schatz DG. A Critical Context-Dependent Role for E Boxes in the Targeting of Somatic Hypermutation. The Journal Of Immunology 2013, 191: 1556-1566. PMID: 23836058, PMCID: PMC3735716, DOI: 10.4049/jimmunol.1300969.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsBinding SitesB-LymphocytesCells, CulturedChickensCytidine DeaminaseDNA, RecombinantE-Box ElementsEnhancer Elements, GeneticGenes, Immunoglobulin Light ChainGenes, ReporterGreen Fluorescent ProteinsImmunoglobulin Variable RegionMutationProtein BindingSomatic Hypermutation, ImmunoglobulinTranscription Factor 3TransfectionTransgenesConceptsE-boxSomatic hypermutationChicken DT40 B cellsDT40 B cellsNon-Ig lociOff-target mutationsActivation-induced cytidine deaminaseContext-dependent roleShort DNA sequencesSequence motifsDNA sequencesTarget genesIg genesSequence contextAffinity of AbsDNA damageCytidine deaminaseRepertoire diversificationMutationsGenesMotifSequenceFunctional hierarchyHypermutationAg stimulation
2012
Identification of Core DNA Elements That Target Somatic Hypermutation
Kohler KM, McDonald JJ, Duke JL, Arakawa H, Tan S, Kleinstein SH, Buerstedde JM, Schatz DG. Identification of Core DNA Elements That Target Somatic Hypermutation. The Journal Of Immunology 2012, 189: 5314-5326. PMID: 23087403, PMCID: PMC3664039, DOI: 10.4049/jimmunol.1202082.Peer-Reviewed Original ResearchMeSH Keywords3' Flanking RegionAnimalsB-LymphocytesCells, CulturedChickensChromatin ImmunoprecipitationCytidine DeaminaseDNAEnhancer Elements, GeneticGenes, ImmunoglobulinGenetic LociImmunoassayImmunoglobulin Variable RegionMutationPhosphorylationRNA Polymerase IISerineSomatic Hypermutation, ImmunoglobulinTranscription, GeneticConceptsActivation-induced deaminaseDNA elementsSomatic hypermutationChicken DT40 B cellsIg lociChromatin immunoprecipitation experimentsDT40 B cellsRNA polymerase IISystematic deletion analysisL chain lociNon-Ig genesCore DNA elementSerine 5Epigenetic marksPolymerase IITranscriptional elongationMutational machineryDeletion analysisReporter cassetteImmunoprecipitation experimentsDeoxycytosine residuesIg genesDNA damageChain locusLoci