Search results for "Kv Channel-Interacting Proteins"

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Benzo[a]pyrene represses DNA repair through altered E2F1/E2F4 function marking an early event in DNA damage-induced cellular senescence

2020

AbstractTranscriptional regulation of DNA repair is of outmost importance for the restoration of DNA integrity upon genotoxic stress. Here we report that the potent environmental carcinogen benzo[a]pyrene (B[a]P) activates a cellular DNA damage response resulting in transcriptional repression of mismatch repair (MMR) genes (MSH2, MSH6, EXO1) and of RAD51, the central homologous recombination repair (HR) component, ultimately leading to downregulation of MMR and HR. B[a]P-induced gene repression is caused by abrogated E2F1 signalling. This occurs through proteasomal degradation of E2F1 in G2-arrested cells and downregulation of E2F1 mRNA expression in G1-arrested cells. Repression of E2F1-me…

Cyclin-Dependent Kinase Inhibitor p21SenescenceAcademicSubjects/SCI00010DNA repairDNA damageRAD51E2F4 Transcription FactorBiologyDNA Mismatch Repair03 medical and health sciences0302 clinical medicineCell Line TumorBenzo(a)pyreneGeneticsHumansCellular SenescenceCell Line Transformed030304 developmental biology0303 health sciencesGene regulation Chromatin and EpigeneticsRecombinational DNA RepairEpithelial CellsKv Channel-Interacting ProteinsCell Cycle CheckpointsDNAFibroblastsCell biologyDNA-Binding ProteinsRepressor ProteinsMSH6DNA Repair EnzymesExodeoxyribonucleasesMutS Homolog 2 ProteinGamma RaysMSH2030220 oncology & carcinogenesisCarcinogensMCF-7 CellsDNA mismatch repairRad51 RecombinaseCell agingE2F1 Transcription FactorDNA DamageSignal TransductionNucleic Acids Research
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