期刊
TRENDS IN ENDOCRINOLOGY AND METABOLISM
卷 27, 期 7, 页码 455-469出版社
ELSEVIER SCIENCE LONDON
DOI: 10.1016/j.tem.2016.04.013
关键词
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资金
- Leducq Fondation [12CVD04]
- National Heart, Lung, and Blood Institute (NHLBI) [HL090553, HL087228, HL125335]
GPIHBP1, a GPI-anchored protein in capillary endothelial cells, is crucial for the lipolytic processing of triglyceride-rich lipoproteins (TRLs). GPIHBP1 shuttles lipoprotein lipase (LPL) to its site of action in the capillary lumen and is essential for the margination of TRLs along capillaries - such that lipolytic processing can proceed. GPIHBP1 also reduces the unfolding of the LPL catalytic domain, thereby stabilizing LPL catalytic activity. Many different GPIHBP1 mutations have been identified in patients with severe hypertriglyceridemia (chylomicronemia), the majority of which interfere with folding of the protein and abolish its capacity to bind and transport LPL. The discovery of GPIHBP1 has substantially revised our understanding of intravascular triglyceride metabolism but has also raised many new questions for future research.
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