Journal: PLoS ONE
Article Title: Fomiroid A, a Novel Compound from the Mushroom Fomitopsis nigra , Inhibits NPC1L1-Mediated Cholesterol Uptake via a Mode of Action Distinct from That of Ezetimibe
doi: 10.1371/journal.pone.0116162
Figure Lengend Snippet: A, Expression of NPC1L1 was determined by western-blot analysis using anti-NPC1L1 antibody. B, Differentiated Caco2/mock and Caco2/rNPC1L1 cells were incubated for 1 h at 37°C with a micellar solution containing 2 mM sodium taurocholate, 50 µM phosphatidylcholine, 1 µM cholesterol, 1 µCi/ml [ 3 H]cholesterol, and the indicated concentrations of ezetimibe or fomiroid A. Radioactivity of [ 3 H]cholesterol was counted in a liquid scintillation counter. C, Differentiated Caco2/mock and Caco2/rNPC1L1 cells were incubated at 37°C with a micellar solution containing 5 mM sodium taurocholate, 500 µM oleate, 10 µM cholesterol, 1 µCi/ml [ 3 H]cholesterol, and the indicated concentrations of ezetimibe or fomiroid A; after 1 h, the micellar solution was replaced with DMEM containing Insulin-Transferrin-Selenium. The cells were incubated for 8 h at 37°C. The lipids extracted by organic solvent were separated with TLC, and the radioactivity of [ 3 H]esterified cholesterol was counted by a liquid scintillation counter. Values represent the means ± S.E. (n = 3). * p <0.05, ** p <0.01 compared with control Caco2/mock cells, # p <0.05, ## p <0.01 compared with control Caco2/rNPC1L1 cells.
Article Snippet: The following antibodies were used in this study: mouse monoclonal anti-HA (F-7, sc-7392, Santa Cruz Biotechnology), anti-GFP (B-2, sc-9996, Santa Cruz Biotechnology), anti-vinculin (V9131, Sigma-Aldrich), rabbit polyclonal anti-NPC1L1 (HPA018105, Sigma-Aldrich), horseradish peroxidase (HRP)-rabbit anti–mouse IgG (H+L) conjugate (81-6720, Life Technologies), HRP-goat anti-rabbit IgG (H+L) conjugate (81-6120, Life Technologies), and Alexa Fluor 633 goat anti–mouse IgG (H+L) conjugate (A-21052, Life Technologies).
Techniques: Expressing, Western Blot, Incubation, Radioactivity