Cited by 257Atherosclerosis and Cardiovascular DiseasesInflammasome and immune disordersCholesterol and Lipid Metabolism

Sterol Regulatory Element Binding Protein 2 Activation of NLRP3 Inflammasome in Endothelium Mediates Hemodynamic-Induced Atherosclerosis Susceptibility

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Xiao, Han, Lu, Min, Lin, Ting Yang, Chen, Zhen, Chen, Gang, Wang, Wei-Chi, Marin, Traci, Shentu, Tzu-pin +9 more·2013·Circulation

Abstract

Background—: The molecular basis for the focal nature of atherosclerotic lesions is poorly understood. Here, we explored whether disturbed flow patterns activate an innate immune response to form the NLRP3 inflammasome scaffold in vascular endothelial cells via sterol regulatory element binding protein 2 (SREBP2). Methods and Results—: Oscillatory flow activates SREBP2 and induces NLRP3 inflammasome in endothelial cells. The underlying mechanisms involve SREBP2 transactivating NADPH oxidase 2 and NLRP3. Consistently, SREBP2, NADPH oxidase 2, and NLRP3 levels were elevated in atheroprone areas of mouse aortas, suggesting that the SREBP2-activated NLRP3 inflammasome causes functionally disturbed endothelium with increased inflammation. Mimicking the effect of atheroprone flow, endothelial cell–specific overexpression of the activated form of SREBP2 synergized with hyperlipidemia to increase atherosclerosis in the atheroresistant areas of mouse aortas. Conclusions—: Atheroprone flow induces NLRP3 inflammasome in endothelium through SREBP2 activation. This increased innate immunity in endothelium synergizes with hyperlipidemia to cause topographical distribution of atherosclerotic lesions.

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Authors
Xiao, H., Lu, M., Lin, T. Y., Chen, Z., Chen, G., Wang, W.-C., Marin, T., Shentu, T.-P., Wen, L., Gongol, B., Sun, W., Liang, X., Chen, J., Huang, H.-D., Pedra, J. H. F., Johnson, D. A., & Shyy, J. Y.-J.
Affiliations
University of California, Riverside (US)
Venue
Circulation
Published
2013-08-06
Volume
128
Issue
6
Pages
632-642
ISSN
  • 0009-7322 (ISSN-L)
  • 1524-4539
OpenAlex
W2022621797
Cited by
257
References
47
Citations by year
2026: 14 · 2025: 15 · 2024: 14 · 2023: 15 · 2022: 22 · 2021: 32 · 2020: 18 · 2019: 23 · 2018: 15 · 2017: 19 · 2016: 25 · 2015: 17 · 2014: 25 · 2013: 2
FWCI
12.71
Type
journal article
Language
en
Open access
Locations
  • Circulation (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
  • National Natural Science Foundation of China (81270349)
  • National Science Council (NSC 101-2311-B-009-003-MY3, NSC 100-2627-B-009-002, NSC 101-2911-I-009-101)
  • National Institutes of Health
  • University of California, San Diego
  • National Heart, Lung, and Blood Institute (R01HL105318, R01HL089940, HL89940, HL105318)
  • National Institute of Allergy and Infectious Diseases (R01AI093653)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › Atherosclerosis and Cardiovascular Diseases
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Inflammasome and immune disorders
  • Health Sciences › Medicine › Surgery › Cholesterol and Lipid Metabolism
Keywords
SREBP2, NLRP3 inflammasome, endothelial cells, oscillatory flow, flow disturbance, atherosclerosis, hemodynamics, NADPH oxidase 2, innate immunity, hyperlipidemia
MeSH terms
NLR Family, Pyrin Domain-Containing 3 Protein, NADPH Oxidase 2, Animals, Apolipoproteins E, Carrier Proteins, Hemodynamics, Humans, Immunity, Innate, Male, Membrane Glycoproteins, Mice, Transgenic, Stress, Mechanical, Vasculitis, NADPH Oxidases, RNA, Small Interfering, MicroRNAs, Endothelial Cells, Atherosclerosis, Mice, Sterol Regulatory Element Binding Protein 2, Inflammasomes, Human Umbilical Vein Endothelial Cells

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