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NADPH Oxidases pp 233-241 | Cite as

Methods for Detection of NOX-Derived Superoxide Radical Anion and Hydrogen Peroxide in Cells

  • Fiona Augsburger
  • Aleksandra Filippova
  • Vincent JaquetEmail author
Protocol
Part of the Methods in Molecular Biology book series (MIMB, volume 1982)

Abstract

NADPH oxidases (NOX) are transmembrane enzymes, which catalyze the formation of reactive oxygen species (ROS). In humans and most mammals, the NOX family comprises seven members, namely, NOX1-5 and the dual oxidases DUOX1 and 2. The primary product of most NOX isoforms is the superoxide radical anion O2ċ–, which is rapidly dismutated in hydrogen peroxide (H2O2), while NOX4 and DUOX mostly generate H2O2. ROS are multifunctional molecules in tissues, and NOX-derived ROS cellular functions are as diverse as microbial killing (NOX2), thyroid hormone synthesis (DUOX2), or otoconia formation in the inner ear (NOX3). NOX are potential pharmacological targets in numerous diseases such as diabetes, fibrosis, and brain ischemia, and NOX inhibitors are currently under development. Here we describe two cellular assays to detect extracellular O2ċ– and H2O2 in cells overexpressing specific NOX isoforms and their subunits.

Key words

NADPH oxidase Hydrogen peroxide Superoxide radical anion Peroxidase Amplex red WST-1 Cellular assay 

Notes

Acknowledgments

This work was supported by the European Community’s Framework Programme (FP7/2007–2013) under grant agreement number 278611.

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • Fiona Augsburger
    • 1
  • Aleksandra Filippova
    • 1
  • Vincent Jaquet
    • 1
    • 2
    Email author
  1. 1.Faculty of Medicine, Department of Pathology and ImmunologyUniversity of GenevaGenevaSwitzerland
  2. 2.READS Unit, Faculty of MedicineUniversity of GenevaGenevaSwitzerland

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