Immunoprecipitates, chromatin extracts, total protein lysates and RIPA cell lysates samples were separated by SDS-PAGE (7.5 to 10% acrylamide) and subsequently transferred to polyvinylidene difluoride (PVDF) membranes (Amersham Hybond, GE Healthcare Europe, Solingen, Germany) with a PerfectBlue™ tank electro blotter (Peqlab Biotechnologie, Erlangen, Germany). Membranes were probed with the following primary antibodies: anti-c-fos (ab134122, Abcam, Cambridge, UK), anti-c-myc (Invitrogen 13-2500, Thermo Fisher Scientific, Dreieich, Germany), anti-Cyclin E (32-1600, Thermo Fisher Scientific, Dreieich, Germany), anti-ERα (NBP1-84827, Novus Biologicals, Wiesbaden, Germany), anti-GFP (sc-9996, Santa Cruz Biotechnology, Heidelberg, Germany), anti-HA (ab9110, Abcam, Cambridge, UK), anti-Histone H3 K4 trimethylation (9751, Cell signaling Technology, Leiden, The Netherlands), anti-HOXA9 (ab140631, Abcam, Cambridge, UK), anti-MLL/KMT2A (NB600-248, Novus Biologicals, Wiesbaden, Germany), anti-Nucleolin (ab22758, Abcam, Cambridge, UK), anti-Nucleophosmin1/B23 (sc-47725, Santa Cruz Biotechnology, Heidelberg, Germany), anti-Topoisomerase IIα/β (ab109524, Abcam, Cambridge, UK), anti-Topoisomerase IIα (sc-365071, Santa Cruz Biotechnology, Heidelberg, Germany), anti-Topoisomerase IIβ (sc-365916, Santa Cruz Biotechnology, Heidelberg, Germany), anti-Taspase1 (AP11325PU-N, OriGene Technologies, Herford, Germany), anti-α-Tubulin (T6074, Sigma-Aldrich, Taufkirchen, Germany) or anti-γH2AX (613402, BioLegend, Amsterdam, The Netherlands).
For visualization of immune complexes, HRP-conjugated secondary antibodies were applied (NXA931 and NA934, GE Healthcare Europe, Solingen, Germany), and detected with the PierceTM ECL Plus Western Blotting Substrate or SuperSignalTM West Femto Maximum Sensitivity Substrate from Thermo Fisher Scientific, Dreieich, Germany and the ChemiDoc MP Imaging System (Bio-Rad Laboratories, Feldkirchen, Germany).
Oelschläger L., Stahl P., Kaschani F., Stauber R.H., Knauer S.K, & Hensel A. (2023). Taspase1 Facilitates Topoisomerase IIβ-Mediated DNA Double-Strand Breaks Driving Estrogen-Induced Transcription. Cells, 12(3), 363.