Redox signaling in development: An emerging frontier
1School of Health Sciences, Faculty of Medicine, University of Iceland, Reykjavik 101, Iceland.
Developmental Cell
|July 31, 2026
Summary
Oxygen levels impact embryonic development by altering reactive oxygen species (ROS) signaling. This review explores how ROS, like hydrogen peroxide (H₂O₂), regulate cellular processes and influence developmental outcomes.
Area of Science:
- Developmental Biology
- Cellular Metabolism
- Redox Biology
Background:
- Oxygen availability is critical for embryonic development, affecting cellular metabolism and signaling.
- Oxygen tension fluctuations disrupt the balance between glycolysis and mitochondrial respiration, altering reactive oxygen species (ROS) production.
- Physiological levels of ROS, particularly hydrogen peroxide (H₂O₂), function as key signaling molecules.
Purpose of the Study:
- To synthesize existing evidence on ROS signaling in embryonic development.
- To explore the molecular mechanisms of thiol-dependent redox regulation.
- To examine the impact of redox balance disruption on cell fate, developmental timing, and morphogenesis.
Main Methods:
- Literature review and synthesis of existing research.
- Exploration of thiol-dependent regulation mechanisms.
- Analysis of studies linking redox balance to developmental processes.
Main Results:
- ROS, including H₂O₂, modulate cellular processes via reversible oxidation of cysteine residues in redox-sensitive proteins.
- ROS signaling fine-tunes pathways involving transcription factors and epigenetic regulators.
- Disruptions in redox balance are implicated in altered cell fate, developmental timing, and tissue morphogenesis.
Conclusions:
- ROS play a significant, yet underexplored, role in embryonic development.
- Understanding ROS signaling is crucial for comprehending developmental processes and potential disruptions.
- Further research into redox regulation in development is warranted to elucidate its full impact.
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