FIG. 3.
GDNF blocks the phosphorylation of p70S6 kinase in hepatocytes. (A-C) Western blot analysis of phospho-p70S6K (Thr389) and phospho-4E-BP1 (ser69) levels in RALA255–10G rat hepatocytes cultured for 48h in medium supplemented with or without GDNF (200 ng/ml) and palmitate (0.2 mM) and during the last 24h with or without rapamycin (20 nM). Plotted are means + SEM (***, P<0.001; **, P<0.01. n = 3). (D-F) Western blot analysis of phospho-p70S6K (Thr389) and phospho-4E-BP1 (ser69 levels in primary mouse hepatocytes cultured for 48 h in medium supplemented with or without GDNF (200 ng/ml) and palmitate (0.2 mM) and during the last 24 h with or without rapamycin (20 nM). Plotted are means + SEM (***, P<0.001; **, P<0.01. n = 3).