treatment of pc12 cells with the protein kinase c activator phorbol 12-myristate 13-acetate alone elevated prepro-npy mrna marginally , but the phorbol ester plus forskolin elicited 20-70-fold increases , which were further enhanced to over 200-fold by dexamethasone and the calcium ionophore a23187 .
C0039654
phorbol
C0031586
phorbol ester