VE-821 is a potent ATP-competitive inhibitor of ATR with Ki/IC50 of 13 nM/26 nM.
体外研究
VE-821 shows excellent selectivity for ATR with minimal cross-reactivity against the related PIKKs ATM, DNA-PK, mTOR and PI3Kγ (Kis of 16 μM, 2.2 μM, >1 μM and 3.9 μM, respectively) and against a large panel of unrelated protein kinases. VE-821 (compound 27) also inhibits ATM and DNA-PK wirh IC50 of >8 μM, and 4.4 μM, respectively. VE-821 significantly enhances the sensitivity of PSN-1, MiaPaCa-2 and primary PancM pancreatic cancer cells to radiation and Gemcitabine under both normoxic and hypoxic conditions. ATR inhibition by VE-821 leads to inhibition of radiation-induced G2/M arrest in cancer cells. In both PSN-1 and MiaPaCa-2 cells, 1 µM VE-821 inhibits phosphorylation of Chk1 (Ser 345) after treatment with Gemcitabine (100 nM), radiation (6 Gy) or both, at 2 h post-irradiation.
分子式
C18H16N4O3S
分子量
368.41
CAS号
1232410-49-9
运输条件
Room temperature in continental US; may vary elsewhere.
储存方式
Powder
-20°C
3 years
4°C
2 years
In solvent
-80°C
6 months
-20°C
1 month
溶解性数据
In Vitro:
DMSO : 50 mg/mL (135.72 mM; Need ultrasonic)
H2O : < 0.1 mg/mL (ultrasonic;warming;heat to 60°C) (insoluble)