Journal: bioRxiv
Article Title: KDM7B-mediated demethylation of RNF113A regulates small cell lung cancer sensitivity to alkylation damage
doi: 10.64898/2026.01.03.697470
Figure Lengend Snippet: A , Immunodetection with indicated antibodies of methylated RNF113A levels after total RNF113A immunoprecipitation from HeLa cells stably expressing HA-RNF113A, either pre-treated with DMSO (Control) or treated with IOX1 inhibitor for 72 hours. KU80 was used as a loading control. B , Representative spectra after MALDI-mass spectrometry analyses of RNF113A in vitro demethylation assays using RNF113A K20me 2 peptide in the absence (left panel) or presence (right panel) of the demethylase KDM7B. C , Representative spectra after ESI-mass spectrometry analyses of KDM7B-mediated demethylation of either RNF113A K20me 2 (left panel), H3K9me 2 (middle panel) and H3K4me 3 K9me 2 (right panel) peptides. D , Quantification of the different states of methylation observed after KDM7B-mediated demethylation of RNF113A K20me 2 , H3K9me 2 and H3K4me 3 K9me 2 . Each condition represents the mean with SEM of three technical replicates.
Article Snippet: Cells were incubated with 10 μM of the pan-demethylase IOX1 (5-carboxy-8-hydroxyquinoline; Cat. No. S7234, Selleck Chemicals) for 48 hours at 37°C prior to protein extraction and immunoblotting.
Techniques: Immunodetection, Methylation, Immunoprecipitation, Stable Transfection, Expressing, Control, Mass Spectrometry, In Vitro