Apoptotic protein detection. Cells were harvested by trypsinization with trypsin/EDTA solution after 24,
48 and 72 hours of BJLM-C8 treatment, and centrifuged at 1500 rpm. Cells were washed twice with 1x
PBS and fixed with ice-cold 70% ethanol for 1 hour at 4oC, then washed twice with 1x PBS and resuspended
in blocking buffer (2% BSA) for 10 minutes, followed by another washing step. Cell pellet was
re-suspended in PBS to a concentration 1 x 107 cells/ml and 100 μl of cells suspension (1 x 106 cells/ml)
were transferred into each sample tube and 20 μl of FITC/PE conjugated antibody were added into tubes
followed by gently mixing. The antibodies used in this experiment are FITC-conjugated Bcl-XL, PEconjugated
Bax and PE-conjugated p53; all were purchased from Santa Cruz Biotechnology, Inc. The
tubes were incubated at RT for 20-30 minutes in the dark. The pellets were washed with 2 ml of 1x PBS
and the supernatant were discarded. Cell pellets were re-suspended in 500 μl of 1x PBS and ready to
proceed for FCM analysis.