Abstract：
:Cholesteryl ester accumulation by macrophages is a critical early event in atherogenesis. To test the hypothesis that sterol loading promotes foam cell formation and vascular disease by perturbing a network of interacting proteins, we used a global approach to identify proteins that are differentially expressed when macrophages are loaded with cholesterol in vivo. Our analysis revealed a sterol-responsive network that is highly enriched in proteins with known physical interactions, established roles in vesicular transport, and demonstrated atherosclerotic phenotypes in mice. Pharmacologic intervention with a statin or rosiglitazone and use of mice deficient in LDL receptor or apolipoprotein E implicated the network in atherosclerosis. Biochemical fractionation revealed that most of the sterol-responsive proteins resided in microvesicles, providing a physical basis for the network's functional and biochemical properties. These observations identify a highly integrated network of proteins whose expression is influenced by environmental, genetic, and pharmacological factors implicated in atherogenesis.
journal_name
Cell Metabjournal_title
Cell metabolismauthors
Becker L,Gharib SA,Irwin AD,Wijsman E,Vaisar T,Oram JF,Heinecke JWdoi
10.1016/j.cmet.2010.01.003subject
Has Abstractpub_date
2010-02-03 00:00:00pages
125-35issue
2eissn
1550-4131issn
1932-7420pii
S1550-4131(10)00004-5journal_volume
11pub_type
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