Fig. 6.
Regulation of DAT transport activity and surface levels in syn 1A co-expressing cells. 6xHis-rDAT-LLCPK1 cells transiently transfected with vector or syn 1A cDNA were treated with vehicle or 1 μM PMA for 15 min and analyzed for [3H]DA transport activity or subjected to cell surface biotinylation. A. [3H]DA transport activity (means ± S.E. of 5 independent experiments performed in triplicate). *, p<0.05; **, p<0.01, ***, p<0.001 relative to control or indicated treatment by ANOVA. Upper panel, representative blot of total DAT levels. Quantification of blot intensities p>0.05 relative to control by ANOVA. B. Representative immunoblot and quantification of biotinylated DAT (means ± S.E. of 4 independent experiments performed in duplicate). *, p<0.05, **, p<0.01, relative to control by ANOVA.