Fig. 5.
Expression of a dominant negative STAT5 mutant inhibits Bcl-XL expression.
Ton.p210.ΔSTAT5 cells were kept in culture in RPMI 1640 + 10% FCS and left untreated or treated with 1 μg/mL for 48 hours. Cells were then harvested, washed, and lysed. Lysates were separated by SDS-PAGE and the level of Bcl-XL was assessed by Western blot. The equal loading is assessed either by the endogenous level of STAT5 (upper panel, STAT5) or by the level of expression of p85 (middle panel).