The emerging role of NADPH oxidase NOX5 in vascular disease

Area of Science:

• Biochemistry
• Molecular Biology
• Pathophysiology

Background:

• Oxidative stress, driven by reactive oxygen species (ROS) and depleted antioxidants, is implicated in various diseases.
• Nicotinamide adenine dinucleotide phosphate (NADPH) oxidases (NOXs) are key pro-oxidant enzymes generating ROS, particularly in vascular tissues, kidneys, aortas, and eyes.
• While NOX1 and NOX4 roles are established in specific diseases, NOX5's pathological involvement remains less clear.

Discussion:

• NOX5 is significantly upregulated in human diseases but absent in rodents, hindering traditional animal model studies.
• Emerging evidence suggests a pathophysiological role for NOX5 across various conditions.
• Understanding NOX5's expression, regulation, and activation mechanisms is crucial for disease research.

Key Insights:

• NOX5's unique absence in rodents presents a significant challenge for studying its disease mechanisms.
• Despite this limitation, research is uncovering NOX5's contribution to human disease pathogenesis.
• The review critically analyzes current evidence on NOX5's role in disease.

Outlook:

• Further research is needed to elucidate NOX5's specific molecular and cellular functions in disease.
• Developing novel models or approaches may be necessary to overcome the limitations of studying NOX5 in rodents.
• Targeting NOX5 could offer new therapeutic strategies for diseases associated with oxidative stress.