Cratoxy formosum leaf extract inhibits proliferation and migration of human breast cancer MCF-7 cells

Cratoxy formosum leaf extract inhibits proliferation and migration of human breast cancer MCF-7 cells


English :

In this study we investigated how Cratoxy formosum (CF) leaf extract affects the viability and migration of
human breast cancer cells including the mechanism(s) responsible. Our results showed that CF leaf
extract strongly induced MCF-7 cell death in a concentration- and time-dependent manner, with IC50
values of 85.70

4.52 mg/mL and 53.74

3.02 mg/mL at 24 h and 48 h, respectively. Additionally, CF leaf
extract potentiated the activity of 4 anticancer drugs with the greatest synergy occurring between CF and
5-FU. CF leaf extract also caused a dose-dependent decrease in colony forming ability with IC50 values of
36.37 + 1.80 mg/mL and cell migration, with IC50 values of 43.68

0.86 mg/mL. Moreover, CF significantly
induced ROS formation, increased caspase 3 activities, and reduced the mitochondrial membrane
potential, leading to cancer cell apoptosis and cell death. In addition, the extract inhibited cancer cell
migration at 25 mg/mL by reducing MMP 2 and MMP 9 protein expression. Moreover, CF leaf extracts
strongly decreased expression of the cell cycle regulatory protein Rac1 and downstream protein, cdk6. CF
leaf extract significantly stimulated p21 and this correlated with a reduction in cyclin D1 protein levels. In
summary, CF leaf extract can inhibit cell proliferation, induce cell apoptosis, and reduce cell migration in
the MCF-7 cell line. It could also be beneficial for enhancing the activity of anticancer drugs used to treat
breast cancer.