The world's first wiki where authorship really matters (Nature Genetics, 2008). Due credit and reputation for authors. Imagine a global collaborative knowledge base for original thoughts. Search thousands of articles and collaborate with scientists around the globe.

wikigene or wiki gene protein drug chemical gene disease author authorship tracking collaborative publishing evolutionary knowledge reputation system wiki2.0 global collaboration genes proteins drugs chemicals diseases compound
Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Low-density lipoprotein from apolipoprotein E-deficient mice induces macrophage lipid accumulation in a CD36 and scavenger receptor class A-dependent manner.

OBJECTIVE: To investigate the potential of circulating low-density lipoprotein (LDL), isolated from apolipoprotein E (apoE)-deficient mice (E-/-LDL) and from LDL receptor-deficient mice (Lr-/-LDL), to induce foam cell formation. METHODS AND RESULTS: Binding studies using COS-7 cells overexpressing CD36, J774 cells, and mouse peritoneal macrophages (MPMs) unexpectedly showed for the first time that E-/-LDL, which is enriched in cholesterol, is a high-affinity ligand for CD36 and exhibited greater macrophage uptake than Lr-/-LDL or normal LDL. Minimal copper-mediated oxidization of Lr-/-LDL or C57LDL in vitro resulted in increased ligand internalization, although cell uptake of these oxidized LDLs was lower than that of E-/-LDL, even at oxidation levels similar to that found in E-/-LDL. Treatment of MPMs with E-/-LDL and Lr-/-LDL (to a 2- to 3-fold lesser extent), but not normal LDL, resulted in significant cellular cholesteryl ester accumulation and foam cell formation. Experiments using MPMs lacking CD36, scavenger receptor class A (SR-A), or both, indicated a major contribution of CD36 ( approximately 50%), and to a lesser extent, SR-A (24% to 30%), to E-/-LDL uptake. CONCLUSIONS: Because of its increased state of oxidation and high cholesterol content, LDL in apoE-deficient mice acts in a proatherogenic manner, without requiring further modification in the vascular wall, to induce foam cell formation through its uptake by scavenger receptors.[1]

References

  1. Low-density lipoprotein from apolipoprotein E-deficient mice induces macrophage lipid accumulation in a CD36 and scavenger receptor class A-dependent manner. Zhao, Z., de Beer, M.C., Cai, L., Asmis, R., de Beer, F.C., de Villiers, W.J., van der Westhuyzen, D.R. Arterioscler. Thromb. Vasc. Biol. (2005) [Pubmed]
 
WikiGenes - Universities