Advertisement
Browse Subject Areas
?

Click through the PLOS taxonomy to find articles in your field.

For more information about PLOS Subject Areas, click here.

< Back to Article

Treatment with proteasome inhibitor bortezomib decreases organic anion transporting polypeptide (OATP) 1B3-mediated transport in a substrate-dependent manner

Fig 3

Effects of bortezomib on total OATP1B1 and OATP1 B3 protein levels and total ubiquitin-conjugated proteins in human SCH.

Human SCH were cultured as described in the Materials and Methods section. (A) Immunoblot of OATP1B3 and OATP1B1 in whole cell lysates of human SCH that were treated with bortezomib (Btz) (50 and 250 nM) or vehicle control (CTL). β-actin served as the loading control. Representative images are shown from n = 3 and 4 donors for 50 and 250 nM treatment, respectively. (B) Fold changes of OATP1B1 and OATP1B3 protein levels. Densitometry of OATP1B1 and OATP1B3 protein levels was normalized to that of β-actin. Fold changes of total protein levels of OATP1B1 and OATP1B3 in bortezomib-treated cells vs. CTL were expressed as mean ± SD n = 3 and 4 donors for 50 and 250 nM treatment, respectively. (C) Immunoblot of ubiquitin in whole cell lysates of human SCH treated with bortezomib (Btz) (50 nM, 7 h) or vehicle control. β-actin served as the loading control. Representative images are shown from n = 3 donors.

Fig 3

doi: https://doi.org/10.1371/journal.pone.0186924.g003