(A, B) Effects of dinaciclib and JQ1 on the mRNA expression of genes shown in CLB-GA cells. Cells were untreated or treated with 10 nM dinaciclib or 0.5 μM JQ1 for 8 or 20 h, respectively, followed by RT-qPCR analysis. The relative levels of mRNA expression were normalized to the GAPDH level and were expressed as fold changes relative to control (set at 1). (C, D, E) Effects of JQ1, dinaciclib, or AZD5153 on the cytotoxicity of human NB cell lines. Cells were treated with JQ1 (C, E), dinaciclib (D), or AZD5153 (E) at the indicated concentrations for 72 h, followed by MTS assay. (F, G) Additive or synergistic effects of JQ1/AZD5153 in combination with dinaciclib. CLB-GA cells were treated with JQ1, AZD5153, or dinaciclib alone or combination at the indicated concentrations for 72 h, followed by MTS assay. Asterisk or hash is in relation to control or dinaciclib treatment alone, respectively.