Cited by 68Nitric Oxide and Endothelin EffectsNeutrophil, Myeloperoxidase and Oxidative MechanismsKawasaki Disease and Coronary Complications

Expression of NADPH oxidases and enhanced H2O2-generating activity in human coronary artery endothelial cells upon induction with tumor necrosis factor-α

Yoshida, Lucia S., Tsunawaki, Shohko·2008·International Immunopharmacology

Abstract

Tumor necrosis factor (TNF)-alpha, which potentiates reactive oxygen species (ROS) generation, is crucial for the development of coronary arteritis and aneurysm in Kawasaki disease. We hypothesized that vascular NADPH oxidase (Nox) enzymes participate in the TNF-alpha-triggered endothelial damage through elevating ROS generation. Thus, we herein examine the expression of Nox enzymes in human coronary artery endothelial cells (HCAEC) and the effects of TNF-alpha on Nox-mediated ROS generation. We show that HCAEC in culture spontaneously generate H(2)O(2) at basal level (0.53 nmol/min/mg protein). In searching for Nox components responsible for the H(2)O(2) generation, two distinct isoforms of Nox4 are found expressed in HCAEC: the prototype Nox4A and the shorter Nox4B, respectively in the postnuclear supernatant and the nuclear fractions. Other expressed Nox family components are: as mRNAs, Nox4C, Nox4D, Nox1, p51(nox), and Racs; as mRNAs and proteins, Nox2, p22(phox), p47(phox), and p67(phox). The H(2)O(2)-generating activity increases up to three-fold upon inclusion of TNF-alpha in culture, concomitantly with augmented expressions of Nox4A, p22(phox), p47(phox) and p67(phox) proteins. Together, these results suggest that Nox2 and Nox4A enzymes are induced by TNF-alpha endowing HCAEC with enhanced ROS-generating activity, which may play a role in the initial endothelial dysfunction through oxidative stress.

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Crossref · 10.1016/j.intimp.2008.05.004

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Authors
Yoshida, L. S., & Tsunawaki, S.
Affiliations
National Research Institute for Child Health and Development (JP)
Corresponding author
Tsunawaki, Shohko
Venue
International Immunopharmacology
Publisher
Elsevier BV
Published
2008-10
Volume
8
Issue
10
Pages
1377-1385
ISSN
1567-5769 (ISSN-L)
OpenAlex
W2097467525
Cited by
68
References
43
Citations by year
2026: 1 · 2025: 1 · 2024: 1 · 2023: 1 · 2022: 9 · 2021: 3 · 2020: 3 · 2019: 6 · 2018: 2 · 2017: 4 · 2016: 1 · 2015: 4 · 2014: 4 · 2013: 4 · 2012: 4
FWCI
4.51
Type
journal article
Language
en
Open access
closed
Locations
  • International Immunopharmacology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Mitsukoshi Health and Welfare Foundation
  • National Institutes of Health
Topics
  • Health Sciences › Medicine › Physiology › Nitric Oxide and Endothelin Effects
  • Life Sciences › Immunology and Microbiology › Immunology › Neutrophil, Myeloperoxidase and Oxidative Mechanisms
  • Health Sciences › Medicine › Surgery › Kawasaki Disease and Coronary Complications
Keywords
NADPH oxidase, TNF-α, hydrogen peroxide, reactive oxygen species, coronary artery endothelial cells, NOX2, p22phox, p47phox, p67phox, endothelial dysfunction, oxidative stress, Kawasaki disease, coronary arteritis
MeSH terms
NADPH Oxidase 2, NADPH Oxidase 4, Cells, Cultured, Coronary Vessels, Endothelium, Vascular, Humans, Hydrogen Peroxide, Membrane Glycoproteins, RNA, Messenger, Tumor Necrosis Factor-alpha, Gene Expression, Reactive Oxygen Species, NADPH Oxidases

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