Virus and infection KSHV virus produced from BCBL-1 cell line was used to infect THP-1 cells, as previously

reported [29]. Briefly, THP-1 cells were pelleted and incubated with KSHV (200X) at 37°C for 1h. Cells were then plated in complete medium and used for further treatments. Cell viability analysis Cells VX-809 manufacturer were seeded in 24-well plates in complete medium and treated with Ly294002 (10μM), bortezomib (10nM), 2DG (10 mM) or 2DG (10 mM)/bortezomib (10nM). When LY294002 and bortezomib were used in combination, cells were pretreated with LY294002 for 40 min before adding bortezomib. After 24h or 48h of treatment (for BCBL-1 and THP1 respectively) cells were collected, counted by trypan-blue exclusion assay using a hemocytometer; cell pellets were used for western blot analysis. Each experiment was performed in triplicate. Western blot analysis Western Blot analysis selleck compound was performed as described elsewhere [30]. Briefly, cell were lysed in modified RIPA buffer (150 mM NaCl, 1% NP40, 50

mM Tris–HCl pH8, 0,5% deoxycholic acid, 0,1% SDS, 1% Triton X-100 protease and phosphatase inhibitor), equal amount of lysates were loaded on 4-12% NuPage Bis tris gels (Life technologies cat no. NO0322BOX) electrophoresed and transferred to Nitrocellulose membrane (Whatman, GE Healthcare, cat. no. 10401196). Membranes were then blocked for 30 min at RT in PBS containing BSA 3% and 0,2% Tween-20 and then probed with primary antibody overnight at 4°C. After 3 washes in PBS-0,2% Tween 20, membranes were incubated for 45 min with the appropriate horseradish peroxidase-conjugated secondary Adenosine triphosphate antibody (Santa Cruz

biotechnologies) then washed as described before and the blots were developed using ECL Blotting Substrate (Thermo Scientific, Rockford, IL, USA; cat no. 32209). The following antibodies were used: mouse monoclonal anti β-actin (Sigma cat. no. A2228), rabbit polyclonal anti Phospho-Akt (Ser473) (Cell Signaling cat.9271), rabbit polyclonal anti Akt (Cell Signaling cat.9272), rabbit polyclonal anti cleaved PARP (p-85, cell signaling cat. 9542), rabbit polyclonal anti GLUT1 (Santa Cruz cat no. sc-7903). Immunofluorescence Cells were seeded on multispot slides, fixed for 10 min in cold methanol (−20°C) and incubated with the following primary antibodies for 1h at room temperature (RT): mouse anti LANA (Novus Biologicals cat no. NBP1-30176) and rabbit anti GLUT-1 (Santa Cruz cat no. sc-7903). After incubation with appropriate conjugate secondary antibody (30 min at RT), cell were stained with DAPI. Finally, microscope slides were mounted using PBS- Glicerol 1:1 and visualized by a Apotome Axio Observer Z1 inverted microscope (Zeiss, Oberkochen, Germany), equipped with an AxioCam MRM Rev.3 camera at 40 × magnification. Cell Selleckchem AZD1480 fractionation and membrane preparation Cell fractionation was performed as described elsewhere [31].