NBEAL1 Controls SREBP2 Processing and Cholesterol Metabolism and is a Susceptibility Locus for Coronary Artery Disease

Overview

Journal Sci Rep

Specialty Science

Date 2020 Mar 13

PMID 32161285

Citations 18

Authors

Christian Bindesboll

Aleksander Aas

Margret Helga Ogmundsdottir

Serhiy Pankiv

Trine Reine

Roberto Zoncu

Anne Simonsen

Affiliations

Soon will be listed here.

Abstract

Dysregulated cholesterol homeostasis promotes the pathology of atherosclerosis, myocardial infarction and strokes. Cellular cholesterol is mainly regulated at the transcriptional level by SREBP2, but also through uptake of extracellular cholesterol from low density lipoproteins (LDL) via expression of LDL receptors (LDLR) at the cell surface. Identification of the mechanisms involved in regulation of these processes are thus key to understand the pathology of coronary artery disease. Here, we identify the large and poorly characterized BEACH domain protein Neurobeachin-like (NBEAL) 1 as a Golgi- associated protein required for regulation of cholesterol metabolism. NBEAL1 is most abundantly expressed in arteries. Genetic variants in NBEAL1 are associated with decreased expression of NBEAL1 in arteries and increased risk of coronary artery disease in humans. We show that NBEAL1 regulates cholesterol metabolism by modulating LDLR expression in a mechanism involving interaction with SCAP and PAQR3 and subsequent SREBP2-processing. Thus, low expression of NBEAL1 may lead to increased risk of coronary artery disease by downregulation of LDLR levels.

Citing Articles

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