Cited by 371Redox biology and oxidative stressNitric Oxide and Endothelin EffectsNeutrophil, Myeloperoxidase and Oxidative Mechanisms

The NOX toolbox: validating the role of NADPH oxidases in physiology and disease

Open access
Altenhöfer, Sebastian, Kleikers, Pamela W. M., Radermacher, Kim A., Scheurer, Peter, Rob Hermans, J. J., Schiffers, Paul, Ho, Heidi, Wingler, Kirstin +1 more·2012·Cellular and Molecular Life Sciences

Abstract

Reactive oxygen species (ROS) are cellular signals but also disease triggers; their relative excess (oxidative stress) or shortage (reductive stress) compared to reducing equivalents are potentially deleterious. This may explain why antioxidants fail to combat diseases that correlate with oxidative stress. Instead, targeting of disease-relevant enzymatic ROS sources that leaves physiological ROS signaling unaffected may be more beneficial. NADPH oxidases are the only known enzyme family with the sole function to produce ROS. Of the catalytic NADPH oxidase subunits (NOX), NOX4 is the most widely distributed isoform. We provide here a critical review of the currently available experimental tools to assess the role of NOX and especially NOX4, i.e. knock-out mice, siRNAs, antibodies, and pharmacological inhibitors. We then focus on the characterization of the small molecule NADPH oxidase inhibitor, VAS2870, in vitro and in vivo, its specificity, selectivity, and possible mechanism of action. Finally, we discuss the validation of NOX4 as a potential therapeutic target for indications including stroke, heart failure, and fibrosis.

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  • VAS2870 appears to inhibit all isoforms, with proven inhibitory effects at least for NOX1, NOX2, NOX4, and NOX5 isoforms.

    “VAS2870 appears to inhibit all isoforms, with proven inhibitory effects at least for NOX1, NOX2, NOX4, and NOX5 isoforms (21, 520).”
  • VAS2870 and VAS3947 do not have a noticeable effect on XO- or eNOS-dependent ROS production, so they can be considered specific pan-NOX inhibitors.

    “These inhibitors do not have a noticeable effect on XO- or eNOS-dependent ROS production, so they can be considered specific pan-NOX inhibitors.”
  • VAS2870 is a well validated NADPH oxidase inhibitor as it shows no intrinsic antioxidant activity, does not inhibit other flavoproteins and inhibits NADPH oxidase-mediated ROS production in vitro and in vivo.

    “VAS2870 is a well validated NADPH oxidase inhibitor [341] as it shows no intrinsic antioxidant activity, does not inhibit other flavoproteins and inhibits NADPH oxidase-mediated ROS production in vitro and in vivo.”

    From Functions of ROS in Macrophages and Antimicrobial Immunity (2021) · cites this paper as [341]

  • VAS2870 is definitely not Nox2-specific.

    “However, although initial experiments suggested VAS2870 to be Nox2-specific, it is definitely not [341,393,403,404].”

    From Functions of ROS in Macrophages and Antimicrobial Immunity (2021) · cites this paper as [341]

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Research works printed but not linked: 1

  1. [120]Sedeek M Callera GE Montezano A Gutsol A Heitz F Szyndralewiez C Critical role of NOX4-based NADPH oxidase in glucose-induced oxidative stress in the kidney—implications in type 2 diabetic nephropathy Am J Physiol Renal Physiol 2010 299 6 F1348 F1358 10.1152/ajprenal.00028.2010 20630933 · DOI · Paper page

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Authors
Altenhöfer, S., Kleikers, P. W. M., Radermacher, K. A., Scheurer, P., Rob Hermans, J. J., Schiffers, P., Ho, H., Wingler, K., & Schmidt, H. H. H. W.
Affiliations
  • Maastricht University (NL)
  • Vasopharm (Germany) (DE)
Corresponding author
Schmidt, Harald H. H. W.
Venue
Cellular and Molecular Life Sciences
Published
2012-05-31
Volume
69
Issue
14
Pages
2327-2343
ISSN
  • 1420-682X (ISSN-L)
  • 1420-9071
OpenAlex
W2088298159
Cited by
371
References
193
Citations by year
2026: 7 · 2025: 10 · 2024: 16 · 2023: 18 · 2022: 26 · 2021: 21 · 2020: 35 · 2019: 34 · 2018: 25 · 2017: 31 · 2016: 26 · 2015: 29 · 2014: 34 · 2013: 45 · 2012: 14
FWCI
3.56
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Cellular and Molecular Life Sciences (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Research Publications (Maastricht University) (publishedVersion, cc-by)
  • Research Publications (Maastricht University) (submittedVersion, other-oa)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
  • Health Sciences › Medicine › Physiology › Nitric Oxide and Endothelin Effects
  • Life Sciences › Immunology and Microbiology › Immunology › Neutrophil, Myeloperoxidase and Oxidative Mechanisms
Keywords
NADPH oxidase, NOX4, reactive oxygen species, oxidative stress, reductive stress, VAS2870, NADPH oxidase inhibitors, knockout mice, siRNA, pharmacological inhibitors, therapeutic target, stroke, heart failure, fibrosis
MeSH terms
Animals, Enzyme Inhibitors, Humans, Reactive Oxygen Species, Oxidative Stress, NADPH Oxidases, Protein Isoforms, Models, Animal, RNA Interference, RNA, Small Interfering

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