Extra-hepatic metabolism of 7-ketocholesterol occurs by esterification to fatty acids via cPLA2α and SOAT1 followed by selective efflux to HDL.

PubWeight™: 0.76‹?›

🔗 View Article (PMID 25617738)

Published in Biochim Biophys Acta on January 22, 2015

Authors

Jung Wha Lee1, Jiahn-Dar Huang2, Ignacio R Rodriguez2

Author Affiliations

1: Mechanisms of Retinal Diseases Section, Laboratory of Retinal Cell and Molecular Biology, National Eye Institute, National Institutes of Health, Bethesda, MD, USA. Electronic address: leej@nei.nih.gov.
2: Mechanisms of Retinal Diseases Section, Laboratory of Retinal Cell and Molecular Biology, National Eye Institute, National Institutes of Health, Bethesda, MD, USA.

Articles cited by this

Bile acids: regulation of synthesis. J Lipid Res (2009) 4.31

ACAT-2, a second mammalian acyl-CoA:cholesterol acyltransferase. Its cloning, expression, and characterization. J Biol Chem (1998) 2.13

Human cholesterol 7alpha-hydroxylase (CYP7A1) deficiency has a hypercholesterolemic phenotype. J Clin Invest (2002) 2.12

Disruption of the oxysterol 7alpha-hydroxylase gene in mice. J Biol Chem (2000) 1.76

Differential expression of ACAT1 and ACAT2 among cells within liver, intestine, kidney, and adrenal of nonhuman primates. J Lipid Res (2000) 1.59

Immunological quantitation and localization of ACAT-1 and ACAT-2 in human liver and small intestine. J Biol Chem (2000) 1.36

Oxysterols are substrates for cholesterol sulfotransferase. J Lipid Res (2007) 1.32

Cholesterol in the retina: the best is yet to come. Prog Retin Eye Res (2014) 1.27

Cholesterol oxidation in the retina: implications of 7KCh formation in chronic inflammation and age-related macular degeneration. J Lipid Res (2010) 1.22

Oxysterols in the pathogenesis of major chronic diseases. Redox Biol (2013) 1.21

Free and esterified oxysterol: formation during copper-oxidation of low density lipoprotein and uptake by macrophages. J Lipid Res (1996) 1.19

Human acyl-CoA:cholesterol acyltransferase-1 is a homotetrameric enzyme in intact cells and in vitro. J Biol Chem (1999) 1.18

7-Ketocholesterol is present in lipid deposits in the primate retina: potential implication in the induction of VEGF and CNV formation. Invest Ophthalmol Vis Sci (2008) 1.15

Human cytosolic sulfotransferase 2B1: isoform expression, tissue specificity and subcellular localization. J Steroid Biochem Mol Biol (2006) 1.12

Cytosolic phospholipase A2 as a mediator of disease pathogenesis. Cell Microbiol (2010) 1.08

7-ketocholesterol-induced inflammation: involvement of multiple kinase signaling pathways via NFκB but independently of reactive oxygen species formation. Invest Ophthalmol Vis Sci (2010) 1.05

Early onset of puberty and early ovarian failure in CYP7B1 knockout mice. Proc Natl Acad Sci U S A (2005) 1.01

Metabolism of an oxysterol, 7-ketocholesterol, by sterol 27-hydroxylase in HepG2 cells. Lipids (2001) 0.98

Acyl-coenzyme A:cholesterol acyltransferase promotes oxidized LDL/oxysterol-induced apoptosis in macrophages. J Lipid Res (2005) 0.98

Structure and functions of human oxysterol 7alpha-hydroxylase cDNAs and gene CYP7B1. J Lipid Res (1999) 0.96

Regulation of liver-specific steroid metabolizing cytochromes P450: cholesterol 7α-hydroxylase, bile acid 6β-hydroxylase, and growth hormone-responsive steroid hormone hydroxylases. J Steroid Biochem Mol Biol (1992) 0.92

7-Ketocholesterol. Its effects on hepatic cholesterogenesis and its hepatic metabolism in vivo and in vitro. J Biol Chem (1977) 0.92

HDL-mediated mechanisms of protection in cardiovascular disease. Cardiovasc Res (2014) 0.92

Rapid hepatic metabolism of 7-ketocholesterol in vivo: implications for dietary oxysterols. J Lipid Res (1999) 0.89

A high-precision fluorogenic cholesteryl ester transfer protein assay compatible with animal serum and 3456-well assay technology. Anal Biochem (2007) 0.88

CYP7B1-mediated metabolism of 5alpha-androstane-3alpha,17beta-diol (3alpha-Adiol): a novel pathway for potential regulation of the cellular levels of androgens and neurosteroids. Biochim Biophys Acta (2009) 0.84

7-ketocholesterol accumulates in ocular tissues as a consequence of aging and is present in high levels in drusen. Exp Eye Res (2014) 0.84

Acyl-coenzyme A:cholesterol acyltransferase inhibitors for controlling hypercholesterolemia and atherosclerosis. Curr Opin Investig Drugs (2003) 0.82

SULT2B1: unique properties and characteristics of a hydroxysteroid sulfotransferase family. Drug Metab Rev (2013) 0.81

7-Ketocholesterol-induced inflammation signals mostly through the TLR4 receptor both in vitro and in vivo. PLoS One (2014) 0.81

7-Ketocholesterol delivered to mice in chylomicron remnant-like particles is rapidly metabolised, excreted and does not accumulate in aorta. Biochim Biophys Acta (2001) 0.79

The effect of dietary 7-ketocholesterol, inhibitor of sterol synthesis, on hepatic microsomal cholesterol 7 alpha-hydroxylase activity in rat. Biochim Biophys Acta (1994) 0.78

Paradoxical enhancement of hepatic metabolism of 7-ketocholesterol in sterol 27-hydroxylase-deficient mice. Biochim Biophys Acta (2002) 0.77