Differential expression and regulation of nucleoside transport systems in rat liver parenchymal and hepatoma cells
Belén del Santo, Raquel Valdés, João Mata, Antonio Felipe, F. Javier Casado, Marçal Pastor‐Anglada – 30 December 2003 – Primary cultures of rat‐liver parenchymal cells show carrier‐mediated nucleoside uptake by a mechanism that mainly involves concentrative, Na+‐dependent transport activity. In contrast, the hepatoma cell line FAO shows high nucleoside transport activity, although it is mostly accounted for by Na+‐independent transport processes. This is associated with a low amount of sodium purine nucleoside transporter (SPNT) mRNA.