The Arachidonic Acid Metabolome Serves as a Conserved Regulator of Cholesterol Metabolism

Egon Demetz, Andrea Schroll, Kristina Auer, Christiane Heim, Josef R. Patsch, Philipp Eller, Markus Theurl, Igor Theurl, Milan Theurl, Markus Seifert, Daniela Lener, Ursula Stanzl, David Haschka, Malte Asshoff, Stefanie Dichtl, Manfred Nairz, Eva Huber, Martin Stadlinger, Alexander R. Moschen, Xiaorong LiPetra Pallweber, Hubert Scharnagl, Tatjana Stojakovic, Winfried Maerz, Marcus E. Kleber, Katia Garlaschelli, Patrizia Uboldi, Alberico L. Catapano, Frans Stellaard, Mats Rudling, Keiji Kuba, Yumiko Imai, Makoto Arita, John D. Schuetz, Peter P. Pramstaller, Uwe J. F. Tietge, Michael Trauner, Giuseppe D. Norata, Thierry Claudel, Andrew A. Hicks, Guenter Weiss*, Ivan Tancevski

*Corresponding author for this work

    Research output: Contribution to journalArticleAcademicpeer-review

    98 Citations (Scopus)
    162 Downloads (Pure)

    Abstract

    Cholesterol metabolism is closely interrelated with cardiovascular disease in humans. Dietary supplementation with omega-6 polyunsaturated fatty acids including arachidonic acid (AA) was shown to favorably affect plasma LDL-C and HDL-C. However, the underlying mechanisms are poorly understood. By combining data from a GWAS screening in >100,000 individuals of European ancestry, mediator lipidomics, and functional validation studies in mice, we identify the AA metabolome as an important regulator of cholesterol homeostasis. Pharmacological modulation of AA metabolism by aspirin induced hepatic generation of leukotrienes (LTs) and lipoxins (LXs), thereby increasing hepatic expression of the bile salt export pump Abcb11. Induction of Abcb11 translated in enhanced reverse cholesterol transport, one key function of HDL. Further characterization of the bioactive AA-derivatives identified LX mimetics to lower plasma LDL-C. Our results define the AA metabolome as conserved regulator of cholesterol metabolism, and identify AA derivatives as promising therapeutics to treat cardiovascular disease in humans.

    Original languageEnglish
    Pages (from-to)787-798
    Number of pages12
    JournalCell Metabolism
    Volume20
    Issue number5
    DOIs
    Publication statusPublished - 4-Nov-2014

    Keywords

    • SALT EXPORT PUMP
    • MYOCARDIAL-INFARCTION
    • ACUTE-INFLAMMATION
    • LIPID MEDIATORS
    • FATTY-ACIDS
    • ATHEROSCLEROSIS
    • TRANSPORT
    • ASPIRIN
    • GENE
    • 5-LIPOXYGENASE

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