Prexasertib Mesylate Hydrate (LY2606368 Mesylate Hydrate) 是一种选择性的，ATP 竞争性的第二代细胞周期检测点激酶 1 (Chk1) 抑制剂，Ki为 0.9 nM，IC50为<1 nM。Prexasertib Mesylate Hydrate 抑制 Chk2 (IC50=8 nM) 和 RSK1 (IC50=9 nM)。Prexasertib Mesylate Hydrate 引起双链 DNA 断裂和复制突变，导致细胞Apoptosis" style="display: inline; color: #c13a36">凋亡 (Apoptosis)。Prexasertib Mesylate Hydrate 显示有效的抗肿瘤活性。

Prexasertib Mesylate Hydrate (LY2606368 Mesylate Hydrate) is a selective, ATP-competitive second-generation checkpoint kinase 1 (CHK1) inhibitor with a K i of 0.9 nM and an IC 50 of<1 nM. Prexasertib Mesylate Hydrate inhibits CHK2 (IC 50 =8 nM) and RSK1 (IC 50 =9 nM). Prexasertib Mesylate Hydrate causes double-stranded DNA breakage and replication catastrophe resulting in apoptosis. Prexasertib Mesylate Hydrate shows potent anti-tumor activity [1] [2].

Prexasertib Mesylate Hydrate (LY2606368 Mesylate Hydrate) inhibits MELK (IC 50 =38 nM), SIK (IC 50 =42 nM), BRSK2 (IC 50 =48 nM), ARK5 (IC 50 =64 nM). LY2606368 requires CDC25A and CDK2 to cause DNA damage [1]. Prexasertib Mesylate Hydrate (33, 100 nM; for 7 hours) results in DNA damage during S-phase in HeLa cells [1]. Prexasertib Mesylate Hydrate (8-250 nM; pre-treated for 15 minutes) inhibits CHK1 autophosphorylation (S296) and CHK2 autophosphorylation (S516) in HT-29 cells [1]. Prexasertib Mesylate Hydrate (4 nM; 24 hours) results in a large shift in cell-cycle populations from G1 and G2-M to S-phase with an accompanied induction of H2AX phosphorylation in U-2 OS cells [1]. Prexasertib Mesylate Hydrate (33 nM; for 12 hours) causes chromosomal fragmentation in HeLa cells. Prexasertib Mesylate Hydrate (100 nM; 0.5 to 9 hours) induces replication stress and depletes the pool of available RPA2 for binding to DNA [1]. Cell Cycle Analysis [1] Cell Line: HeLa cells Concentration: 33, 100 nM Incubation Time: For 7 hours Result: Had an IC 50 of 37 nM and resulted in the G2-M population received DNA damage during S-phase but continued to progress through the cell cycle into an early mitosis. Western Blot Analysis [1] Cell Line: HT-29 cells Concentration: 8, 16, 31, 63, 125, 250 nM Incubation Time: Pre-treated for 15 minutes Result: Inhibited CHK1 autophosphorylation (S296) and CHK2 autophosphorylation (S516) (IC 50 of less than 31 nM) in HT-29 cells.

Prexasertib Mesylate Hydrate (LY2606368 Mesylate Hydrate; 1-10 mg/kg; SC; twice daily for 3 days, rest 4 days; for three cycles) causes growth inhibition in tumor xenografts [1]. Prexasertib Mesylate Hydrate (15 mg/kg; SC) causes CHK1 inhibition in the blood and the phosphorylation of both H2AX (S139) and RPA2 (S4/S8) [1]. Animal Model: Female CD-1 nu-/nu- mice (26-28 g) with Calu-6 cells [1] Dosage: 1, 3.3, or 10 mg/kg Administration: SC; twice daily for 3 days, rest 4 days; for three cycles Result: Caused statistically significant tumor growth inhibition (up to 72.3%). Animal Model: Female CD-1 nu-/nu- mice (26-28 g) with Calu-6 cells [1] Dosage: 15 mg/kg (Pharmacokinetic Analysis) Administration: SC (200 μL) Result: CHK1 was 7 ng/mL at 12 hours and 3 ng/mL by 24 hours in plasma exposures. Phosphorylation of both H2AX (S139) and RPA2 (S4/S8) was detectable at 4 hours, showing the rapid occurrence of DNA damage.

1234015-57-6

C19H25N7O6S

479.51

(< 1 mg/ml refers to the product slightly soluble or insoluble )
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In solvent: -80°C for 2 years