CBD induces
apoptosis in noncancerous prostate cells. (A) Noncancerous
prostate epithelial cells (PWR-1E, RWPE-1) were treated with CBD (0–100
μM) for 72 h in the absence of serum. Cell viability was measured
using the MTT assay. (B) Representative images of PWR-1E cells treated
with vehicle or 1 μM CBD for 72 h, stained with Hoechst 33342
(blue), YO-PRO (green), and PI (red). (C) The effect of CBD on PWR-1E
cell confluency, nucleus area, and nucleus circularity was assessed
using high-content fluorescence microscopy. (D) Fractions of early
apoptotic, late apoptotic, and healthy PWR-1E cells were measured
by fluorescence microscopy, using YO-PRO and PI staining. Data are
represented as mean ± SD calculated from at least three independent
experiments. *p < 0.05, **p <
0.01, ***p < 0.001 compared to the vehicle control.