GCN2-IN-6 (Compound 6d) is a potent, and orally available GCN2 inhibitor confirmed by in-house enzymatic (IC50 of 1.8 nM) and cellular assays (IC50 of 9.3 nM). GCN2-IN-6 is also a eIF2α kinase PERK inhibitor with an IC50 of 0.26 nM (in enzymatic assay) and 230 nM (in cells).
To examine the impact of GCN2 inhibition on cancer cell proliferation, acute lymphoblastic leukemia (ALL) CCRFCEM cells are treated with GCN2-IN-6 (Compound 6d) in the presence of asparaginedepleting agent asparaginase. Treatment with GCN2-IN-6 greatly sensitizes CCRF-CEM cells to asparaginase. The moderate antiproliferative effects achieved by combining asparaginase and GCN2-IN-6 treatment are observed in GCN2-wildtype (WT) mouse embryonic fibroblast (MEF) cells but not in GCN2-knockout (KO) MEF. GCN2-IN-6 demonstrates suppression on p-GCN2, p-eIF2α, and ATF4 activated by asparaginase.
体内研究
GCN2-IN-6 (Compound 6d; 0.3-3 mg/kg; oral administration; for 8 hours; mice) treatment at 3 mg/kg suppresses both self-phosphorylation of GCN2 and the downstream effector ATF4 to the basal level following pretreatment with asparaginase.
Animal Model:
Mice bearing CCRF-CEM cells xenografts
Dosage:
0.3 mg/kg, 1 mg/kg, and 3 mg/kg
Administration:
Oral administration; for 8 hours
Result:
Suppressed both self-phosphorylation of GCN2 and the downstream effector ATF4 to the basal level following pretreatment with asparaginase.
分子式
C19H12Cl2F2N4O3S
分子量
485.29
CAS号
2183470-09-7
运输条件
Room temperature in continental US; may vary elsewhere.