FIGURE 4.

Dose effects of dimethylarsenic acid on cytochrome C release and Bcl‐2 family protein translocation in MA‐10 cells. Cells were challenged with dimethylarsenic acid (0, 0.1, 1 and 10 mM) for 12 and 24 h, respectively. Cytochrome C (14 kDa), Bid (22 kDa), and Bax (20 kDa) were respectively examined in mitochondrial (Mito) and cytosolic (Cyto) fractions via western blotting. Represent immunoblots are from one single experiment repeated at least 3 times (A). COX IV (17 kDa) and β‐Actin (43 kDa) were exploited as loading controls for cytosolic and mitochondrial fractions, correspondingly. IOD of cytochrome C (B), Bax (C), and Bid (D) was determined with loading control normalization for each lane. Results in B, C, and D illustrate the mean ± SEM of 3 independent experiments. The * represents statistical difference as compared to control group, respectively (p < 0.05).