Caffeic acid phenethyl ester is a NF-κB inhibitor. Cell survival and proliferation of CRPC cell lines are all significantly suppressed by Caffeic acid phenethyl ester (CAPE) treatment dose-dependently. The growth inhibitory effect of Caffeic acid phenethyl ester is evident within 24 hours of treatment but the suppressive effect accumulates over time. The IC50 of 24, 48, 72, and 96 h Caffeic acid phenethyl ester treatment on LNCaP 104-R1 cells is 64.0, 30.5, 20.5, and 18.0 μM, respectively. Colony formation assay reveals that treatment with 10 μM Caffeic acid phenethyl ester reduces colony formation of LNCaP 104-R1 cells by 90% while treatment with 20 μM Caffeic acid phenethyl ester completely blocks the formation of LNCaP 104-R1 colonies. Flow cytometric analysis reveals a reduction of cells in the S phase and G2/M phase but an increase of cells in the G1 phase population in LNCaP 104-R1 cells under Caffeic acid phenethyl ester treatment. Caffeic acid phenethyl ester treatment also significantly decreases protein levels of fatty acid synthase (FAS), retinoblastoma protein (Rb), phospho-Rb Ser807/811, c-Myc, p70S6kinase, phospho-p70S6kinase Thr421/Ser424, Skp2, p90RSK, and NF-κB p65.
Medlife has not independently confirmed the accuracy of these methods. They are for reference only.