GW-311616 is a potent, orally bioavailable, long duration and selective human neutrophil elastase ( HNE ) inhibitor with IC 50 value of 22 nM and K i value of 0.31 nM
In Vitro
GW-311616 (150 μM; 48 hours) markedly suppresses NE activity in U937 and K562 cells lines. GW-311616 (20-320 μM; 48 hours; U937 cells) treatment inhibits proliferation and induces apoptosis in leukemia cells. GW-311616 (150 μM; U937 cells) treatment can increase the protein expression levels of Bax and decrease the expression of Bcl-2. MCE has not independently confirmed the accuracy of these methods. They are for reference only. Cell Viability AssayCell Line: U937 and K562 cells Concentration: 150 μM Incubation Time: 48 hours Result: Markedly suppressed NE activity. Apoptosis AnalysisCell Line: U937 cells Concentration: 20 μM, 40 μM, 80 μM, 160 μM, 320 μM Incubation Time: 48 hours Result: The rate of apoptosis was enhanced. Western Blot AnalysisCell Line: U937 cells Concentration: 150 μM Incubation Time: 48 hours Result: Increased the protein expression levels of Bax and decreased the expression of Bcl-2.
In Vivo
GW-311616 (2 mg/kg; oral administration) rapidly abolishes the circulation of neutrophil elastase (NE) in dogs, while >90% inhibition is maintained for 4 days. This prolonged effect is independent to be due to penetration of neutrophils in bone marrow by orally administrated GW-311616. GW-311616 has moderate terminal elimination half-life (t 1/2 ) of 1.1 hours and 1.5 hours for dog (2 mg/kg, oral), rat (2 mg/kg, oral), respectively. MCE has not independently confirmed the accuracy of these methods. They are for reference only. Animal Model: Dogs (9-month-old)Dosage: 0.22 mg/kg, 0.66 mg/kg and 2 mg/kg (Pharmacokinetic study) Administration: Oral administration Result: At 0.22 mg/kg, greater than 50% inhibition of elastase was achieved 6 hours after dosing, with activity returning towards control values. Single oral dose of 2 mg/kg rapidly abolished circulating enzyme activity, and greater than 90% inhibition was maintained for 4 days.
Form:Solid
IC50& Target:IC50: 22 nM (HNE), Ki: 0.31 nM (HNE)
