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Updated: Oct 17, 2025

Bioluminescence Imaging of NADPH Oxidase Activity in Different Animal Models
Published on: October 22, 2012
The role of NADPH oxidases in infectious and inflammatory diseases
Jared P Taylor1, Hubert M Tse1
1Department of Microbiology, Comprehensive Diabetes Center, University of Alabama at Birmingham, Birmingham, AL, USA.
Abstract:
Nicotinamide adenine dinucleotide phosphate (NADPH) oxidases (NOX) are enzymes that generate superoxide or hydrogen peroxide from molecular oxygen utilizing NADPH as an electron donor. There are seven enzymes in the NOX family: NOX1-5 and dual oxidase (DUOX) 1-2. NOX enzymes in humans play important roles in diverse biological functions and vary in expression from tissue to tissue. Importantly, NOX2 is involved in regulating many aspects of innate and adaptive immunity, including regulation of type I interferons, the inflammasome, phagocytosis, antigen processing and presentation, and cell signaling. DUOX1 and DUOX2 play important roles in innate immune defenses at epithelial barriers. This review discusses the role of NOX enzymes in normal physiological processes as well as in disease. NOX enzymes are important in autoimmune diseases like type 1 diabetes and have also been implicated in acute lung injury caused by infection with SARS-CoV-2. Targeting NOX enzymes directly or through scavenging free radicals may be useful therapies for autoimmunity and acute lung injury where oxidative stress contributes to pathology.
Insights
Nicotinamide adenine dinucleotide phosphate (NADPH) oxidases (NOX) are crucial enzymes in human health and immunity. Targeting NOX enzymes offers potential therapies for autoimmune diseases and acute lung injury by mitigating oxidative stress.
Area of Science:
- Biochemistry
- Immunology
- Cell Biology
Background:
- Nicotinamide adenine dinucleotide phosphate (NADPH) oxidases (NOX) are enzymes that produce reactive oxygen species (ROS) using NADPH.
- The NOX family includes seven enzymes (NOX1-5, DUOX1-2) with diverse tissue expression and biological roles.
- NOX2 is critical for innate and adaptive immunity, influencing interferon production, inflammasome activity, phagocytosis, and cell signaling.
Purpose of the Study:
- To review the physiological roles of NOX enzymes.
- To discuss the involvement of NOX enzymes in various diseases.
- To explore therapeutic strategies targeting NOX enzymes.
Main Methods:
- Literature review of NOX enzyme function and involvement in disease.
- Analysis of NOX enzyme roles in immunity and oxidative stress.
Main Results:
- NOX enzymes are vital for immune responses, including epithelial barrier defense by DUOX1/2.
- NOX enzymes are implicated in autoimmune diseases like type 1 diabetes.
- NOX enzymes contribute to acute lung injury associated with SARS-CoV-2 infection.
Conclusions:
- NOX enzymes play significant roles in both normal physiology and disease pathogenesis.
- Targeting NOX enzymes or scavenging free radicals presents potential therapeutic avenues for oxidative stress-related conditions.
- Further research into NOX enzyme modulation could lead to novel treatments for autoimmune disorders and infectious lung injuries.
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