Biological Activity
Senicapoc (ICA-17043) is a potent and selective Gardos channel blocker with IC50 value of 11 nM. It blocks Ca2+-induced rubidium flux from human RBCs with an IC50 value of 11 nM and inhibits RBC dehydration with IC50 of 30 nM.
In Vitro
ICA-17043 is shown to block the Gardos channel of mouse (C57 Black) RBCs with an IC50 of 50±6 nM. ICA-17043 blocks this increase in cellular hemoglobin concentration in human RBCs in a concentration-dependent fashion[1].
In Vivo
ICA-17043 (10 mg/kg, p.o.) administration produces a significant decrease in Gardos channel activity measured at day 11 and 21 and is associated with a corresponding increase in red cell K+ content without changes in Na+ content. ICA-17043 (10 mg/kg, twice a day) induces a significant increase in Hct after 11 days of dosing in the SAD mouse[1]. Senicapoc (30 mg/kg, p.o.) reduces airway hyperresponsiveness, eosinophil numbers in bronchoalveolar lavage taken 48 hours post-allergen challenge, and vascular remodelling in the sheep[2].
References & source
Published experimental findings depend on the model and assay conditions. They do not guarantee equivalent performance in every application. For laboratory research use only.