Fig. 3. Fenbendazole-induced apoptosis via mitochondrial injury and caspase-3-poly (ADP-ribose) polymerase (PARP) pathways in colorectal cancer cells.
(A) Cell death distribution was assessed by annexin V/PI staining and flow cytometry after treatment with mock (dimethyl sulfoxide, DMSO) or indicated dose of fenbendazole for 3 days. The percentages of normal, early apoptosis, late apoptosis, and necrosis in SNU-C5 (left) and SNU-C5/5-FUR (right) cells are presented as the mean ± SD. **p < 0.01 and ***p < 0.001 vs. DMSO. (B) SNU-C5 and SNU-C5/5-FUR cells were mock-treated with DMSO or treated with indicated dose of fenbendazole. 3 days after treatment, cells were harvested and whole cell extracts were subjected to immunoblotting using the anti-PARP, anti-caspase-3, and anti-cytochrome C antibodies. Signal intensity of each proteins was measured by AzureSpot analysis software. Data are presented as the mean ± SD. *p < 0.05, **p < 0.01, and ***p < 0.001 vs. DMSO.
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