Distribution of a Conjugate of 9-β-D-Arabinofuranosyladenine 5′-Monophosphate (ara-AMP) with Lactosaminated Albumin in Parenchymal and Sinusoidal Cells of Rat Liver

9-beta-D-Arabinofuranosyladenine 5'-monophosphate (ara-AMP) coupled to lactosaminated human albumin (L-HSA), injected i.v. into rats, selectively enters the liver. The conjugate concentration in parenchymal and sinusoidal hepatic cells, isolated by collagenase perfusion, was found to be practically equal in both cell types. This indicates that the high uptake of L-HSA-ara-AMP complex by the whole liver also corresponds to a high conjugate concentration in hepatocytes where ara-AMP should be targeted in order to increase its chemotherapeutic index in chronic hepatitis B treatment.