Cell lysis and Western blot analysis were performed as described previously [40 (link)], using the following antibodies: Rabbit polyclonal anti-SIK2 (Cell Signaling, Danvers, MA, USA), rabbit polyclonal anti-SIK2-pS385 (Kinexus, Sydney, Australia), rabbit polyclonal anti-AKT (Cell Signaling), rabbit polyclonal anti-AKT-pS473 (Cell Signaling), mouse monoclonal anti-β-actin (Sigma-Aldrich), rabbit polyclonal-anti KIF18B (ThermoFisher scientific, Waltham, MA, USA), rabbit polyclonal anti-EB1 (Abcam, Cambridge, UK), mouse monoclonal anti-cyclin B1 (Santa Cruz Biotechnology, Dallas, TX, USA), mouse monoclonal anti-Histone 3-pS10 (ThermoFisher scientific), mouse monoclonal anti-PLK1 (Santa Cruz Biotechnology), mouse monoclonal anti-vinculin (Santa Cruz Biotech), mouse monoclonal anti-P53 (Santa Cruz Biotech), rabbit polyclonal anti-P21 (cell signaling), rabbit polyclonal anti-BCL-xL (Santa Cruz Biotechnology), rabbit polyclonal anti-Cyclin D (Santa Cruz Biotechnology).
Reagents were purchased from the following sources: Paclitaxel (T7402) Sigma-Aldrich, propidium iodide (440300250) Acros Organics (Fair Lawn, NJ, USA), RNase A (1007885) Qiagen (Hilden, Germany), PE Annexin V (556421) and 7AAD (21-68981E) BD Biosciences, Caspase-Glo® 3/7 Assay system (P1781) Promega, RO3306 (S7747) Selleckchem (Houston, TX, USA).
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