CX6258是一种强效选择性的泛 Pim 激酶抑制剂，对Pim-1、Pim-2 和 Pim-3 作用的IC50值分别为 5、25 和 16 nM。

CX-6258 is an orally valid Pim 1/2/3 kinase(IC50=5 nM/25 nM/16 nM) inhibitor. It has good biological activity and kinase specificity.

CX-6258 shows antiproliferative activity against a panel of human cancer cell lines with IC50 of 0.02-3.7 μM, mostly sensitive to acute leukemia cell lines. Combinations of CX-6258 with doxorubicin (10:1 molar ratio) and CX-6258 with paclitaxel (100:1 molar ratio) produces synergistic cell killing with combination index (CI50) values equal to 0.4 and 0.56, respectively. CX-6258 causes dose dependent inhibition of the phosphorylation of two pro-survival proteins, Bad and 4E-BP1, at the Pim kinase specific sites S112 and S65 and T37/46, respectively. [1]

Pim activity assay: Pim-1 and Pim-2 inhibitions are measured in radiometric assays using human recombinant Pim-1 at [ATP] = 30 μM (substrate RSRHSSYPAGT) and human recombinant Pim-2 at [ATP] = 5 μM (substrate RSRHSSYPAGT). The radiometric assay for Pim-3 uses RSRHSSYPAGT as a substrate in the presence of [ATP] = 155 μM.

1202916-90-2

C26H24ClN3O3

461.95

CX 6258

DMSO:>10 mM
Powder: -20°C for 3 years
In solvent: -80°C for 2 years