Oxidative Stress / DNA damage / DNA repair / Biological Sciences / Cell line / Humans / Cell Death / BER / Cytoprotection / Chromatin / Hydrogen Peroxide / Human Fibroblasts / Protein Binding / DNA binding proteins / DNA Polymerase / Down-Regulation / Humans / Cell Death / BER / Cytoprotection / Chromatin / Hydrogen Peroxide / Human Fibroblasts / Protein Binding / DNA binding proteins / DNA Polymerase / Down-Regulation