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Christopher Jones, Rita Garuti, Peter Michaely, Wei-Ping Li, Nobuyo Maeda, Jonathan C. Cohen, Joachim Herz, Helen H. Hobbs
Published in Volume 117, Issue 1
J Clin Invest. 2007; 117(1):165–174 doi:10.1172/JCI29415
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Figure 7
Deletion of LRP does not reduce β-VLDL clearance in Arh–/– mice.

(A) Mice (n = 3 per group) were fasted for 4 hours, anesthetized with sodium pentobarbital, and injected with 125I-labeled rabbit β-VLDL (15 μg) via the external jugular vein. Venous blood was collected from the retro-orbital plexus at the indicated times, and the plasma content of isopropanol-precipitable 125I-radioactivity was measured. Radioactivity remaining in the plasma was plotted as a percentage of the activity present 2 minutes after injection of the labeled ligand. The experiment was repeated, and similar results were obtained. (B) Primary hepatocytes were isolated from Arh–/–Lrplox/loxCre and Arh–/–Lrplox/loxCre+ mice and incubated overnight in DMEM containing 5% lipoprotein-deficient serum. The next morning, the cells were incubated with 15 μg/ml DiI β-VLDL or 10 μg/ml methylamine-activated α2-macroglobulin (α2M) (51) for 30 minutes. The cells were washed, fixed, and mounted as described in Methods. Images were taken by deconvolution microscopy. Original magnification, ×84.