NCIt definition : A liposomal formulation in which gemcitabine, a broad-spectrum antimetabolite and
deoxycytidine analogue, is encapsulated in liposomes, with potential antineoplastic
activity. Upon administration of gemcitabine liposome FF-10832, gemcitabine is converted
into the active metabolites difluorodeoxycytidine diphosphate (dFdCDP) and difluorodeoxycytidine
triphosphate (dFdCTP) by deoxycytidine kinase. dFdCTP competes with deoxycytidine
triphosphate (dCTP) and is incorporated into DNA, resulting in premature termination
of DNA replication and the induction of tumor cell apoptosis. In addition, dFdCDP
inhibits ribonucleotide reductase (RNR) and reduces the deoxynucleotide pool available
for DNA synthesis. This inhibits tumor cell proliferation.;