Inhibition of PDE4 expressed in HEK293 cells coexpressing cyclic nucleotide gated ion channel mutant assessed as inhibition of NECA-induced cAMP production treated 15 mins before NECA challenge measured after 45 mins by FLIPR assay
PBMC
Function assay
Inhibition of TNFalpha production in LPS-stimulated human PBMC preincubated before LPS challenge measured after 4 hrs by enzyme immunoassay, IC50=2e-05 μM
sf21 cells
Function assay
Inhibition of human full length PDE4A4 expressed in baculovirus infected sf21 cells, IC50=0.35 nM