“…Immunoblot procedures and immunofluorescence microscopy were performed as described previously (Guetg et al, 2012;Hassa et al, 2005) using the following primary antibodies: monoclonal mouse anti-HA and mouse anti-FLAG antibodies (both Sigma), polyclonal rabbit anti-BAL1 antibodies (C-terminal; Millipore), monoclonal rabbit anti-STAT1, anti-pSTAT1(Y701), anti-pSTAT1(S727), anti-STAT2, anti-pSTAT2(Y690), anti-IRF2, anti-BLIMP1, anti-Casp3, anti-BCL2, anti-BAD, anti-BAD-S112, anti-PIM1, anti-PIM2, anti-PTBN1, anti-JAK1, antipJAK1, anti-JAK2, anti-pJAK2, anti-IFNGR1, anti-PTBN2 and anti-BCL-XL antibodies (RabMab, Epitomics), monoclonal rabbit anti-IRF1 (RabMab, Cell Signaling Technology), monoclonal mouse anti-tubulin, polyclonal rabbit anti-p53 and anti-BCL6 antibodies (Santa Cruz Biotechnology). The polyclonal rabbit anti-BAL2/ARTD8 antibody was a generous gift from Avraham Raz (Karmanos Cancer Institute, School of Medicine, Wayne State University, Detroit, Michigan 48201, USA) (Yanagawa et al, 2007). Immunofluorescently stained cells were analyzed by fluorescence microscopy on a Leica DMI6000B automated inverted research microscope system (Leica Microsystem).…”