12-o-tetradecanoylphorbol-13-acetate

12-o-tetradecanoylphorbol-13-acetate (TPA, also known as PMA) is a synthetic diester of phorbol and a potent tumor promoter widely used in biomedical research. Its primary mechanism is the activation of protein kinase C (PKC), mimicking the action of endogenous diacylglycerol. This activation leads to downstream effects on cell signaling, proliferation, differentiation, and apoptosis. TPA has been extensively used as a tool compound to study signal transduction pathways and immune cell function; for example, it induces superoxide production in macrophages and stimulates B-cell division for cytogenetic testing in hematologic malignancies. In clinical settings, TPA has undergone early-phase trials for hematologic cancers such as acute myeloid leukemia but development was discontinued due to adverse events or lack of efficacy[1][3][4][5]. It can induce maturation or differentiation in various cell lines at low concentrations[2][4].

Other names

tetradecanoylphorbol acetatephorbol 12-myristate 13-acetatephorbol12-myristate 13-acetatephorbol-12-myristate 13-acetatephorbol myristate acetate12-myristoyl 13-acetylphorbolphorbol-myristate acetate