CGP 57380 是强效的MNK1抑制剂，其IC50为 2.2 μM,对 p38, JNK1, ERK1 和 -2, PKC, 或 c-Src-like kinases显示无抑制活性。
PC-3 cells were seeded in 6-well plates. On the next day, cells were treated with the indicated concentrations of 3-AWA, LY294002, CGP57380 or Rapamycin alone and or combination for 12 h. The cells were then subjected to preparation of whole-cell lysates for detection of the indicated proteins using western blotting. The western blots are the representative of three similar experiments.
eFT-508 (eFT508)是一种有效的、选择性的MNK1/2的抑制剂，IC50分别为2.4 nM和1 nM。它能减少肿瘤细胞的增殖和肿瘤生长。