Cited by 857Interstitial Lung Diseases and Idiopathic Pulmonary FibrosisRedox biology and oxidative stressNeutrophil, Myeloperoxidase and Oxidative Mechanisms

NADPH oxidase-4 mediates myofibroblast activation and fibrogenic responses to lung injury

Open access
Hecker, Louise, Vittal, Ragini, Jones, Tamara, Jagirdar, Rajesh, Luckhardt, Tracy R, Horowitz, Jeffrey C, Pennathur, Subramaniam, Martinez, Fernando J +1 more·2009·Nature Medicine

Abstract

Members of the NADPH oxidase (NOX) family of enzymes, which catalyze the reduction of O(2) to reactive oxygen species, have increased in number during eukaryotic evolution. Seven isoforms of the NOX gene family have been identified in mammals; however, specific roles of NOX enzymes in mammalian physiology and pathophysiology have not been fully elucidated. The best established physiological role of NOX enzymes is in host defense against pathogen invasion in diverse species, including plants. The prototypical member of this family, NOX-2 (gp91(phox)), is expressed in phagocytic cells and mediates microbicidal activities. Here we report a role for the NOX4 isoform in tissue repair functions of myofibroblasts and fibrogenesis. Transforming growth factor-beta1 (TGF-beta1) induces NOX-4 expression in lung mesenchymal cells via SMAD-3, a receptor-regulated protein that modulates gene transcription. NOX-4-dependent generation of hydrogen peroxide (H(2)O(2)) is required for TGF-beta1-induced myofibroblast differentiation, extracellular matrix (ECM) production and contractility. NOX-4 is upregulated in lungs of mice subjected to noninfectious injury and in cases of human idiopathic pulmonary fibrosis (IPF). Genetic or pharmacologic targeting of NOX-4 abrogates fibrogenesis in two murine models of lung injury. These studies support a function for NOX4 in tissue fibrogenesis and provide proof of concept for therapeutic targeting of NOX-4 in recalcitrant fibrotic disorders.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1038/nm.2005

Cites

29 of 29 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • 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).”

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

1 retracted

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Hecker, L., Vittal, R., Jones, T., Jagirdar, R., Luckhardt, T. R., Horowitz, J. C., Pennathur, S., Martinez, F. J., & Thannickal, V. J.
Affiliations
University of Michigan (US)
Corresponding author
Thannickal, Victor J
Venue
Nature Medicine
Published
2009-08-23
Volume
15
Issue
9
Pages
1077-1081
ISSN
  • 1078-8956 (ISSN-L)
  • 1546-170X
OpenAlex
W1966672647
Cited by
852
References
29
Citations by year
2026: 34 · 2025: 33 · 2024: 38 · 2023: 51 · 2022: 38 · 2021: 59 · 2020: 64 · 2019: 51 · 2018: 44 · 2017: 52 · 2016: 72 · 2015: 56 · 2014: 65 · 2013: 47 · 2012: 59
FWCI
42.10
Type
journal article
Language
en
Open access
Locations
  • Nature Medicine (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health (n01hr46162-13-0-1)
  • National Heart, Lung, and Blood Institute (K08HL081059, N01HR046162, R01HL067967)
Topics
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Interstitial Lung Diseases and Idiopathic Pulmonary Fibrosis
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
  • Life Sciences › Immunology and Microbiology › Immunology › Neutrophil, Myeloperoxidase and Oxidative Mechanisms
Keywords
NOX4, idiopathic pulmonary fibrosis, myofibroblast activation, fibrogenesis, lung injury, reactive oxygen species, hydrogen peroxide, TGF-β1, Smad3, extracellular matrix synthesis, tissue repair, therapeutic target
MeSH terms
NADPH Oxidase 4, Animals, Cell Differentiation, Fibroblasts, Humans, Hydrogen Peroxide, Mice, Inbred C57BL, RNA, Messenger, NADPH Oxidases, RNA, Small Interfering, Mice, Smad3 Protein, Transforming Growth Factor beta1, Idiopathic Pulmonary Fibrosis, Lung Injury

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review