Cited by 67Nitric Oxide and Endothelin EffectsAtherosclerosis and Cardiovascular DiseasesRedox biology and oxidative stress

NOX4-derived reactive oxygen species limit fibrosis and inhibit proliferation of vascular smooth muscle cells in diabetic atherosclerosis

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Di Marco, Elyse, Gray, Stephen P., Kennedy, Kit, Szyndralewiez, Cedric, Lyle, Alicia N., Lassègue, Bernard, Griendling, Kathy K., Cooper, Mark E. +2 more·2016·Free Radical Biology and Medicine

Abstract

Smooth muscle cell (SMC) proliferation and fibrosis contribute to the development of advanced atherosclerotic lesions. Oxidative stress caused by increased production or unphysiological location of reactive oxygen species (ROS) is a known major pathomechanism. However, in atherosclerosis, in particular under hyperglycaemic/diabetic conditions, the hydrogen peroxide-producing NADPH oxidase type 4 (NOX4) is protective. Here we aim to elucidate the mechanisms underlying this paradoxical atheroprotection of vascular smooth muscle NOX4 under conditions of normo- and hyperglycaemia both in vivo and ex vivo. Following 20-weeks of streptozotocin-induced diabetes, Apoe(-/-) mice showed a reduction in SM-alpha-actin and calponin gene expression with concomitant increases in platelet-derived growth factor (PDGF), osteopontin (OPN) and the extracellular matrix (ECM) protein fibronectin when compared to non-diabetic controls. Genetic deletion of Nox4 (Nox4(-/)(-)Apoe(-/-)) exacerbated diabetes-induced expression of PDGF, OPN, collagen I, and proliferation marker Ki67. Aortic SMCs isolated from NOX4-deficient mice exhibited a dedifferentiated phenotype including loss of contractile gene expression, increased proliferation and ECM production as well as elevated levels of NOX1-associated ROS. Mechanistic studies revealed that elevated PDGF signalling in NOX4-deficient SMCs mediated the loss of calponin and increase in fibronectin, while the upregulation of NOX1 was associated with the increased expression of OPN and markers of proliferation. These findings demonstrate that NOX4 actively regulates SMC pathophysiological responses in diabetic Apoe(-/-) mice and in primary mouse SMCs through the activities of PDGF and NOX1.

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Crossref · 10.1016/j.freeradbiomed.2016.07.013

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  • In general, NOX4 shows protective effects in ApoE−/− mice.

    “In general, NOX4 shows protective effects in ApoE−/− mice (194, 229, 230, 379, 552, 838).”
  • Although NOX4 activity has been shown to reduce fibrosis in atherosclerosis, it can also promote fibrosis, particularly in the lung, but also in kidney and other tissues.

    “In a final note, it should be also considered that although NOX4 activity has been shown to reduce fibrosis in atherosclerosis (230), it can also promote fibrosis, particularly in the lung, but also in kidney and other tissues (110, 201, 416, 596, 820).”
  • NOX4-derived hydrogen peroxide exhibits anti-atherosclerotic effects by smooth muscle cell regulation in diabetic mice.

    “In contrast with this study, NOX4-derived hydrogen peroxide exhibited anti-atherosclerotic effects by smooth muscle cell regulation in diabetic mice (Di Marco et al. 2016; Cortinovis et al. 2022).”

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Authors
Di Marco, E., Gray, S. P., Kennedy, K., Szyndralewiez, C., Lyle, A. N., Lassègue, B., Griendling, K. K., Cooper, M. E., Schmidt, H. H. H. W., & Jandeleit-Dahm, K. A. M.
Affiliations
  • Baker Heart and Diabetes Institute (AU)
  • Emory University (US)
  • Maastricht University (NL)
Corresponding author
Jandeleit-Dahm, Karin A.M.
Venue
Free Radical Biology and Medicine
Publisher
Elsevier BV
Published
2016-08
Volume
97
Pages
556-567
ISSN
0891-5849 (ISSN-L)
OpenAlex
W2478055166
Cited by
67
References
43
Citations by year
2026: 1 · 2025: 2 · 2024: 8 · 2023: 4 · 2022: 2 · 2021: 9 · 2020: 9 · 2019: 11 · 2018: 9 · 2017: 8 · 2016: 3
FWCI
8.31
Type
journal article
Language
en
Locations
  • Free Radical Biology and Medicine (publishedVersion)
  • PubMed (publishedVersion)
  • Research Publications (Maastricht University) (publishedVersion, other-oa)
  • PubMed Central (acceptedVersion)
  • Research Publications (Maastricht University) (submittedVersion, other-oa)
Funders
  • National Health & Medical Research Council (NHMRC)
  • Juvenile Diabetes Research Foundation (JDRF)
  • Diabetes Australia Research Trust
  • Australian Diabetes Society Skip Martin Early Career Fellowship
  • National Heart Foundation Postgraduate Scholarship
  • HHHWS
  • EU Marie Curie International Reintegration Grant and the ERC (30983347E RADMED)
  • National Institute of Health (HL038206, HL095070)
  • NHMRC Senior Research and Senior Principal Fellowships
  • Victorian Government¹s Operational Infrastructure
Topics
  • Health Sciences › Medicine › Physiology › Nitric Oxide and Endothelin Effects
  • Life Sciences › Immunology and Microbiology › Immunology › Atherosclerosis and Cardiovascular Diseases
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
Keywords
NOX4, reactive oxygen species, diabetic atherosclerosis, vascular smooth muscle cells, smooth muscle cell proliferation, vascular fibrosis, hyperglycemia, NADPH oxidase, NOX1, platelet-derived growth factor, osteopontin, fibronectin, extracellular matrix, calponin, smooth muscle cell dedifferentiation, oxidative stress, atheroprotection
MeSH terms
NADPH Oxidase 1, NADPH Oxidase 4, Becaplermin, Animals, Aorta, Cells, Cultured, Diabetes Mellitus, Experimental, Fibrosis, Male, Mice, Inbred C57BL, Muscle, Smooth, Vascular, Superoxides, Reactive Oxygen Species, Mice, Knockout, Proto-Oncogene Proteins c-sis, Myocytes, Smooth Muscle, Cell Proliferation, Atherosclerosis, Osteopontin, Mice, 129 Strain

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