Cited by 2,179Atherosclerosis and Cardiovascular DiseasesCerebrovascular and Carotid Artery DiseasesCholesterol and Lipid Metabolism

Vascular smooth muscle cells in atherosclerosis

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Bennett, Martin R., Sinha, Sanjay, Owens, Gary K.·2016·Circulation Research

Abstract

The historical view of vascular smooth muscle cells (VSMCs) in atherosclerosis is that aberrant proliferation of VSMCs promotes plaque formation, but that VSMCs in advanced plaques are entirely beneficial, for example preventing rupture of the fibrous cap. However, this view has been based on ideas that there is a homogenous population of VSMCs within the plaque, that can be identified separate from other plaque cells (particularly macrophages) using standard VSMC and macrophage immunohistochemical markers. More recent genetic lineage tracing studies have shown that VSMC phenotypic switching results in less-differentiated forms that lack VSMC markers including macrophage-like cells, and this switching directly promotes atherosclerosis. In addition, VSMC proliferation may be beneficial throughout atherogenesis, and not just in advanced lesions, whereas VSMC apoptosis, cell senescence, and VSMC-derived macrophage-like cells may promote inflammation. We review the effect of embryological origin on VSMC behavior in atherosclerosis, the role, regulation and consequences of phenotypic switching, the evidence for different origins of VSMCs, and the role of individual processes that VSMCs undergo in atherosclerosis in regard to plaque formation and the structure of advanced lesions. We think there is now compelling evidence that a full understanding of VSMC behavior in atherosclerosis is critical to identify therapeutic targets to both prevent and treat atherosclerosis.

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Crossref · 10.1161/circresaha.115.306361

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  • Cellular senescence is observed in early stages of atherosclerosis, affecting different cell types in the arterial wall.

    “Cellular senescence is observed in early stages of atherosclerosis,9 affecting different cell types in the arterial wall that have distinct roles in the pathogenesis of this disease: endothelial cells (ECs),96–98 vascular smooth muscle cells (VSMCs),45,99–101 macrophages, foam cells,9,102 monocytes,103 fibroblasts,104–106 and T cells.107,108”
  • Cholesterol accumulation in intimal smooth muscle cells can drive their conversion into pro-inflammatory macrophage-like cells.

    “Intimal smooth muscle cells not only accumulate cholesterol and turn into foam cells but the cholesterol accumulation in the cell can also drive their switching into pro-inflammatory, macrophage-like cells142,143.”

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Authors
Bennett, M. R., Sinha, S., & Owens, G. K.
Affiliations
Addenbrooke's Hospital (GB)
Venue
Circulation Research
Published
2016-02-19
Volume
118
Issue
4
Pages
692-702
ISSN
  • 0009-7330 (ISSN-L)
  • 1524-4571
OpenAlex
W2274924551
Cited by
2,179
References
93
Citations by year
2026: 193 · 2025: 236 · 2024: 270 · 2023: 228 · 2022: 280 · 2021: 263 · 2020: 244 · 2019: 189 · 2018: 153 · 2017: 87 · 2016: 29 · 2015: 1 · 2012: 1
FWCI
92.59
Type
journal article
Language
en
Open access
Locations
  • Circulation Research (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • Apollo (University of Cambridge) (submittedVersion)
  • Apollo
Funders
  • British Heart Foundation (RG79079, PG/13/25/30014, RG71070, PG/16/11/32021, PG/19/6/34153, CH2000003, PG/16/63/32307, FS/18/19/33371, RG/13/14/30314, FS/13/29/30024, FS/15/38/31516, PG/17/9/32834, RG/16/8/32388)
  • National Heart, Lung, and Blood Institute (HL057353, HL087867, HL098538, R01HL087867, R01HL057353, R37HL057353, R01HL098538, R01HL121008)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › Atherosclerosis and Cardiovascular Diseases
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Cerebrovascular and Carotid Artery Diseases
  • Health Sciences › Medicine › Surgery › Cholesterol and Lipid Metabolism
Keywords
vascular smooth muscle cells, atherosclerosis, vascular smooth muscle cell proliferation, phenotypic switching, cellular senescence, plaque formation, plaque rupture, fibrous cap, embryonic origin, lineage tracing, atherosclerosis treatment
MeSH terms
Animals, Cell Differentiation, Cell Movement, Humans, Muscle, Smooth, Vascular, Phenotype, Signal Transduction, Cellular Senescence, Apoptosis, Cell Lineage, Myocytes, Smooth Muscle, Cell Proliferation, Atherosclerosis, Plaque, Atherosclerotic

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