Cyclodextrin promotes atherosclerosis regression via macrophage reprogramming
- PMID: 27053774
- PMCID: PMC4878149
- DOI: 10.1126/scitranslmed.aad6100
Cyclodextrin promotes atherosclerosis regression via macrophage reprogramming
Abstract
Atherosclerosis is an inflammatory disease linked to elevated blood cholesterol concentrations. Despite ongoing advances in the prevention and treatment of atherosclerosis, cardiovascular disease remains the leading cause of death worldwide. Continuous retention of apolipoprotein B-containing lipoproteins in the subendothelial space causes a local overabundance of free cholesterol. Because cholesterol accumulation and deposition of cholesterol crystals (CCs) trigger a complex inflammatory response, we tested the efficacy of the cyclic oligosaccharide 2-hydroxypropyl-β-cyclodextrin (CD), a compound that increases cholesterol solubility in preventing and reversing atherosclerosis. We showed that CD treatment of murine atherosclerosis reduced atherosclerotic plaque size and CC load and promoted plaque regression even with a continued cholesterol-rich diet. Mechanistically, CD increased oxysterol production in both macrophages and human atherosclerotic plaques and promoted liver X receptor (LXR)-mediated transcriptional reprogramming to improve cholesterol efflux and exert anti-inflammatory effects. In vivo, this CD-mediated LXR agonism was required for the antiatherosclerotic and anti-inflammatory effects of CD as well as for augmented reverse cholesterol transport. Because CD treatment in humans is safe and CD beneficially affects key mechanisms of atherogenesis, it may therefore be used clinically to prevent or treat human atherosclerosis.
Copyright © 2016, American Association for the Advancement of Science.
Conflict of interest statement
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Comment in
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Cardiovascular endocrinology: Sugar drug reverses atherosclerosis.Nat Rev Endocrinol. 2016 Jun;12(6):310. doi: 10.1038/nrendo.2016.62. Epub 2016 Apr 22. Nat Rev Endocrinol. 2016. PMID: 27109781 No abstract available.
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Macrophages: Dissolving cholesterol to unclog arteries.Nat Rev Immunol. 2016 Apr 28;16(5):274-5. doi: 10.1038/nri.2016.50. Nat Rev Immunol. 2016. PMID: 27121648 No abstract available.
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