NCIt definition : A small molecule with potential antineoplastic and antiangiogenic activities. Daporinad
binds to and inhibits nicotinamide phosphoribosyltransferase (NMPRTase), inhibiting
the biosynthesis of nicotinamide adenine dinucleotide (NAD ) from niacinamide (vitamin
B3), which may deplete energy reserves in metabolically active tumor cells and induce
tumor cell apoptosis. In addition, this agent may inhibit tumor cell production of
vascular endothelial growth factor (VEGF), resulting in the inhibition of tumor angiogenesis.
The coenzyme NAD plays an essential role in cellular redox reactions, including the
redox reaction linking the citric acid cycle and oxidative phosphorylation.;