(A) Biochemical profile of GRP94 in the indicated cell fractions obtained from cells containing the WT (1) or the TM96 (2) GRP94 construct. LRP6, control for PM proteins; p-p65, p-ERK control for signaling activity and HSP90-incorporating epichaperomes for oncogenic activation of cytosolic chaperomes; myc, control for the presence of TM96. Gels are representative of three individual experiments.
(B) Western blot of indicated cells treated for 24 h with PU-WS13 (10 μM). Graphs, mean ± SEM; n = 3; one-way ANOVA with Dunnett’s post hoc, ***p < 0.001.
(C) Anchorage-independent growth in soft agar examined for MethA WT and TM96 cells at day 21. Graph, mean ± SEM; n = 3 experiments; unpaired t test, **p < 0.01.
(D) Viability of cells treated with PU-WS13 for 72 h. Graph, mean ± SEM; n = 4; two-way ANOVA, ****p < 0.0001. Negative y axis values depict killing of the initial cell population.
(E) Schematic of the findings.
See also Figure S6.