NCIt definition : A 5-aminoimidazole-4-carboxamide (AICA) riboside, a ribnucleoside analog, and a nucleotide
biosynthesis precursor with B cell pro-apoptotic activity. Following cellular uptake,
acadesine is phosphorylated to AICA ribotide (ZMP), which mimics 5'-adenosine monophosphate
(AMP). Both AMP-activated protein kinase (AMPK) and AMPK kinase (AMPKK) are activated
by ZMP, which appears to be necessary for the induction of apoptosis. Acadesine-induced
apoptosis also appears to require cytochrome c release from mitochondria and caspase
activation and is p53-independent. However, the exact mechanism of acadesine-induced
apoptosis is unknown. T cells are significantly less susceptible than B cells to acadesine-induced
apoptosis. AMPK regulates several cellular systems including the cellular uptake of
glucose, the beta-oxidation of fatty acids, protein synthesis, and the biogenesis
of glucose transporter 4 (GLUT4) and mitochondria.;