Total protein was collected from the cells after various treatments. For Western blots, a previously described procedure was applied [28 (link)]. The following primary antibodies were used: p-Jak2 (Y1007/1008), total Jak2, p-Stat3 (Y705), p-Stat3 (S727), and total Stat3 were purchased from Cell Signaling Technology. Antibodies for gp130, gp80, Bmi-1, Oct4 and GAPDH were from Santa Cruz. Mcl-1 and CyclinD1 antibodies were obtained from Abcam. The secondary anti-mouse and anti-rabbit antibodies were purchased from Santa Cruz. All the experiments were performed at least twice and quantification data with statistical analysis was summarized in Figure S19.
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