Figure 4. FZU-0038-056 induces TNBC apoptosis not through activating p38. (A, B) HCC1806 and HCC1937 cells were transfected with siRNAs targeting p38 for 36 hours, and treated with FZU-0038-056 (5 μM) or DMSO for 24 hours. Cell lysates were collected for WB assay. The quantification data of p-p38 protein expression was shown under the immunoblot images. (C, D) HCC1806 and HCC1937 cells were transfected with siRNA for 36 hours, then treated with FZU-0038-056 (1.25, 2.5, 5 μM) or DMSO for 48 hours. Cell viability was measured via the SRB assay.