Figure 1. Identification of FZU-0038-056 as a potent anti-cancer compound in TNBC cell lines. (A) The HCC1806 and HCC1937 breast cancer cell lines were treated with 42 different compounds (10 μM) for 48 hours. DMSO was used as the negative control. Cell viability was measured using SRB assays. FZU-0038-056 and FZU-0038-058 labeled with an asterisk were selected for further studies. (B) Four different TNBC cell lines, two ER positive breast cancer cell lines and one human immortalized breast cell line were treated with DMSO control or FZU-0038-056/FZU-0038-058 at indicated concentrations (2.5, 5 and 10 μM, respectively) for 48 hours. Cell viability was measured using SRB assay. (C) The chemical structures of FZU-0038-056 and FZU-0038-058.