demethylated-PP2A-C Inhibitors

The chemical class of PP2A-C inhibitors comprises a diverse set of compounds that specifically target the catalytic subunit (PP2A-C) of protein phosphatase 2A (PP2A), modulating its enzymatic activity and influencing downstream cellular processes. Okadaic Acid (OA) and its structural analog, Oxalylamino-Epoxydecanediate (OA), are potent inhibitors that disrupt PP2A phosphatase activity by binding to PP2A-C. These compounds stop the dephosphorylation of substrates, leading to the aberrant phosphorylation of cellular proteins involved in critical signaling pathways. Cantharidin, a natural compound, is another inhibitor that interacts with PP2A-C, disrupting its phosphatase activity. By binding to PP2A-C, Cantharidin induces the accumulation of phosphorylated substrates, influencing cellular signaling pathways related to growth and survival. This diverse set of inhibitors also includes LB-100, which selectively target PP2A-C, providing researchers with tools to investigate the intricate roles of PP2A in various cellular processes.

Fostriecin, a natural product, inhibits PP2A by targeting its catalytic subunit, disrupting phosphatase activity, and influencing cellular processes like cell cycle progression and apoptosis. Calyculin A, while known as a PP1/PP2A inhibitor, preferentially inhibits PP2A at lower concentrations. This compound binds to PP2A-C, disrupting the phosphatase activity of PP2A and impacting cellular processes. Microcystin-LR, a natural toxin, binds to PP2A-C, inhibiting its phosphatase activity and leading to the dysregulation of cellular processes. Tautomycin, another natural product, is recognized for its inhibitory effects on protein phosphatases, including PP2A. Tautomycin disrupts PP2A-C, altering phosphorylation patterns and influencing various cellular processes. Collectively, these inhibitors offer valuable tools for researchers to dissect the roles of PP2A in cellular signaling cascades, providing insights into the complex regulatory networks governed by PP2A. The selective inhibition of PP2A-C by these compounds highlights their importance in unraveling the intricate regulatory mechanisms associated with PP2A.