Oxidative stress and cell signalling

Area of Science:

• Cellular Biology
• Biochemistry
• Pathophysiology

Background:

• Reactive oxygen species (ROS) are increasingly implicated in cellular signaling pathways.
• ROS modulate kinases, phosphatases, transcription factors, and gene expression in pathophysiological states.
• ROS signaling involves bioactive molecules derived from cell membrane lipid oxidation.

Purpose of the Study:

• To review the recent knowledge on the role of ROS and oxidized lipids in signal transduction.
• To explore their involvement in major cellular and tissue pathophysiological events.

Main Methods:

• Comprehensive literature review of studies involving animal models, human specimens, and cell lines.
• Analysis of research on ROS and oxidized lipid signaling mechanisms.
• Focus on lipid oxidation products with potential signaling roles.

Main Results:

• ROS, at pathophysiologically relevant concentrations, significantly impact cellular signaling.
• Oxidized lipids, including those from cholesterol, fatty acids, and phospholipids, act as signaling molecules.
• Specific oxidized lipids like isoprostanes, lysophospholipids, and ceramides are key players.

Conclusions:

• ROS and their lipid oxidation products are integral to signal transduction in pathophysiology.
• Understanding these pathways is vital for comprehending cell and tissue disease processes.
• Further research into these signaling molecules could reveal therapeutic targets.