i.e. zebularine, is a more stable, less cytotoxic inhibitor compared to 5-azacytidine probably due to differing stability and reversibility of the covalent bonds. The ternary complexes between the enzyme, 2-(1H)-pyrimidinone inhibitor, and the cofactor S-adenosyl-L-methionine are maintained through the formation of a reversible covalent interaction
inhibits the enzyme, but also DNA methylation, competitive versus 5-aza-2'-deoxycytidine, zebularine affects the antineoplastic action of 5-AZA-CdR on 3T3 cells and V5 cells transduced with CR deaminase gene, overview
Pyrimidine nucleoside phosphorylase and dihydropyrimidine dihydrogenase activities as predictive factors for the efficacy of doxifluridine together with mitomycin C as adjuvant chemotherapy in primary colorectal cancer
Nishioka, M.; Miyamoto, H.; Kurita, N.; Higashijima, J.; Yoshikawa, K.; Miyatani, T.; Shimada, M.