Ro 31-8220

Ro 31-8220 inhibits MAPK and ERK2, in rat adipocytes and L6 myotubes. Ro 31-8220 also inhibits voltage-dependent Na+ channels in the micromolar range assessed by several independent criteria. Treatment of HMDMs with structurally distinct pan-PKC inhibitors (calphostin C, Ro-31-8220, Go6976) and a PKC inhibitory peptide all significantly decreased apoE secretion without significantly affecting apoE mRNA or apoE protein levels. RO 31-8220 enhances epinephrine-induced platelet aggregation in catecholamine hypo-responsive platelets by enhancing Akt phosphorylation. Ro 32-0432, which showed a 10-fold selectivity for PKC-alpha and a 4-fold selectivity for PKC-beta I over PKC-epsilon.