In vivo dose-dependent anti-tumor activity of CKI-7 is demonstrated in a SCID-Beige mouse systemic tumor model utilzing a recently isolated Philadelphia chromosome positive acute lymphoblastic leukemia cell line. Standard cell cycle synchronization studies established that exposure to CKI-7 results in cell cycle dependent caspase 3 activation and apoptotic cell death.
体外研究
CKI-7 (0.1-10 μM; 5 days; ES cells) treatment significantly increases the expression of the early neuroectodermal marker Sox1 and the number of cells positive for the neural markers nestin and βIII-tubulin, in a concentration-dependent manner. CKI-7 (5 μM; 5 days; ES cells) treatment suppresses SFEB-induced β-catenin stabilization on day 5, indicating that CKI-7 inhibits Wnt signaling. RT-PCR Cell Line: Mouse ES cells Concentration: 0.1-10 μM Incubation Time: 5 days Result: Significantly increased the expression of the early neuroectodermal marker Sox1 and the number of cells positive for the neural markers nestin and βIII-tubulin, in a concentration-dependent manner. Western Blot Analysis Cell Line: Mouse ES cells Concentration: 5 μM Incubation Time: 5 days Result: Suppressed SFEB-induced β-catenin stabilization on day 5.
生物活性
CKI-7 free base 是一种有效且 ATP 竞争性的酪蛋白激酶 1 (CK1) 抑制剂，IC50 为 6 μM，Ki 为 8.5 μM。CKI-7 free base 选择性抑制 Cdc7 激酶，还抑制 SGK，S6K1 以及 MSK1。CKI-7 free base 对酪蛋白激酶 II 和其他蛋白激酶的作用弱得多。
编辑结构
