Selenium and Selenoproteins in Neutrophil Functions.

Area of Science:

• Immunology
• Nutritional Biochemistry

Background:

• Neutrophils are key innate immune cells producing reactive oxygen species (ROS) via NADPH oxidases (NOXs).
• ROS significantly influences neutrophil functions like phagocytosis, migration, NETs release, inflammation, and apoptosis.
• Selenium is an essential antioxidant micronutrient incorporated as selenocysteine, impacting cellular functions via selenoproteins.

Purpose of the Study:

• To review the current understanding of selenium and selenoproteins in regulating neutrophil functions.
• To elucidate the mechanisms by which selenium modulates neutrophil activities, considering both redox-dependent and -independent pathways.

Main Methods:

• Literature review of studies investigating selenium, selenoproteins, and neutrophil functions.
• Analysis of research on the role of ROS in neutrophil biology.
• Examination of the interplay between antioxidant defense and immune cell regulation.

Main Results:

• Selenium and selenoproteins modulate neutrophil activities through antioxidant and redox regulatory mechanisms.
• These micronutrients influence critical neutrophil functions impacted by ROS.
• Evidence suggests both redox-dependent and -independent signaling pathways are involved.

Conclusions:

• Selenium and selenoproteins play a crucial role in modulating innate immune responses via neutrophils.
• Understanding these roles is vital for developing nutritional strategies targeting immune health and inflammation.
• Further research is warranted to fully elucidate the complex interactions between selenium and neutrophil functions.