Fig. 4: Knockdown of the proteasome components, PSMD1 or PSMD3, resulted in a greater reduction of growth in TKI-resistant compared with TKI-sensitive K562 cells.

Line graphs show cell growth in K562S (n = 3) and K562R cells (n = 4) expressing shRNA targeting PSMD1 (shPSMD1, (A)) or PSMD3 (shPSMD3, (B)) in the presence and absence of doxycycline (100 ng/ml) to induce the knockdown. Counts were recorded and graphed on a log scale. Error bars represent SEM. *p < 0.05; #p < 0.01.