Fig. 5

BMX, VPA, SAHA, TMZ, Oxp, and Dox combination inhibited cell proliferation in CRC cells. (A) HDAC8 mRNA expression levels stimulated with BMX (5 µM), VPA (4 mM), SAHA (2 µM) with or without TMZ were determined using qRT-PCR assays. (B) HT29, HCT116, and RKO cells were treated with BMX with or without TMZ for 48 h. Then, cells were harvested for detection of acetyl-histone H3 (Lys9/Lys14), acetyl-histone H4 (Lys8), and HDAC8 by Western blot analysis. (C) The proliferation of BMX, VPA, SAHA with or without TMZ, Oxp (5 µM) and Dox (1 µM) in HT29, HCT116, and RKO cells with treatment durations were assayed using the CCK-8 method. (D) Colony formation capability assay with different treatments of BMX, VPA, SAHA with or without TMZ, Oxp and Dox in HT29, HCT116, and RKO cells; the colonies were counted for quantification. All results are shown as mean ± s.d. from three independent experiments. *p < 0.05, **p < 0.01, ***p < 0.001 versus control (HT29 cells); #p < 0.05, ##p < 0.01, ###p < 0.001 versus control (HCT116 cells); †p < 0.05, ††p < 0.01, †††p < 0.001 versus control (RKO cells)