Fig. 5. YLT-11 induced apoptosis of breast cancer cell lines.
a Cell morphological alterations and nuclear changes of MDA-MB-468 and MDA-MB-231 cells were analyzed by staining with Hoechst 33342 (10 mg/mL) and visualized using a microscope after treatment with increasing doses of YLT-11 for 24 h. b MDA-MB-468 and MDA-MB-231 cells were treated with YLT-11 for 48 h and were detected by flow cytometry after Annexin V/PI staining. c The expressions of cleaved caspase-3 and cleaved PARP1 were determined via western blotting. Protein expressions were quantized by densitometry analysis using ImageJ (shown in the right panel). Data are expressed as mean ± SD for three independent experiments. Columns, mean; bars, SD (*p < 0.05, **p < 0.01, ***p < 0.001)