Senicapoc is an inhibitor of intermediate conductance calcium-activated potassium (IKCa1/KCa3.1) channels. It inhibits rubidium efflux from and dehydration of isolated human red blood cells (RBCs) induced by the calcium ionophore A23187 (; IC50s = 11 and 30 nM, respectively). Senicapoc (10 mg/kg twice per day) reduces IKCa1/KCa3.1 channel activity, increases potassium levels in RBCs, and decreases erythrocyte density in the SAD transgenic mouse model of sickle cell disease. It inhibits IL-2, IFN-γ, IL-12, and IL-17A production in CD3+ T cells stimulated with phorbol 12-myristate 13-acetate (PMA; ) and ionomycin (Item Nos. 10004974 | 11932) when used at a concentration of 1 μM. Senicapoc (100 mg/kg) increases the paw withdrawal threshold in a rat model of chronic constriction injury (CCI) of the sciatic nerve.
