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Related Concept Videos

Redox Reactions01:27

Redox Reactions

Redox reactions are vital biochemical processes that underpin energy metabolism in cells. These reactions involve the transfer of electrons between molecules, occurring in tandem as oxidation and reduction. Oxidation refers to the loss of electrons, while reduction denotes their gain. This coupling ensures the seamless flow of electrons through metabolic pathways. For example, in bacterial metabolism, glucose undergoes oxidation to carbon dioxide, while oxygen is simultaneously reduced to...
Redox Reactions01:24

Redox Reactions

Oxidation-reduction or redox reactions involve the transfer of electrons from one molecule or atom to another. When an atom gains an electron, another atom must lose an electron, meaning oxidation and reduction must occur together. Since the redox occurs in pairs, the atom that gets oxidized is also called the reducing agent or reductant, and the atom that is reduced is also called the oxidizing agent or oxidant. A straightforward way to remember the definitions of oxidation and reduction is...

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Related Experiment Video

Updated: Jun 14, 2026

Stimulation of Stem Cell Niches and Tissue Regeneration in Mouse Skin by Switchable Protoporphyrin IX-Dependent Photogeneration of Reactive Oxygen Species In Situ
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Stimulation of Stem Cell Niches and Tissue Regeneration in Mouse Skin by Switchable Protoporphyrin IX-Dependent Photogeneration of Reactive Oxygen Species In Situ

Published on: May 8, 2020

Redox control in mammalian embryo development.

Christoph Ufer1, Chi Chiu Wang, Astrid Borchert

  • 1Institute of Biochemistry, University Medicine Berlin-Charité, Berlin, FR Germany.

Antioxidants & Redox Signaling
|April 7, 2010
PubMed
Summary

Embryonic development relies on balancing oxygen

Area of Science:

  • Developmental Biology
  • Cellular Biology
  • Biochemistry

Background:

  • Embryonic development requires precise temporal and spatial regulation.
  • Embryos face metabolic challenges from changing environments, including oxygen exposure.
  • Oxygen is vital but can generate harmful reactive oxygen and nitrogen species (ROS/RNS).

Purpose of the Study:

  • To review the critical role of redox homeostasis in embryo development.
  • To explore how ROS/RNS act as signaling molecules and potential toxins.
  • To examine novel mechanisms linking cellular redox balance to gene expression.

Main Methods:

  • In vivo gene silencing of antioxidant enzymes.
  • Review of recent discoveries in redox biology and gene regulation.

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Analysis of Oxidative Stress in Zebrafish Embryos
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Analysis of Oxidative Stress in Zebrafish Embryos

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Light-mediated Reversible Modulation of the Mitogen-activated Protein Kinase Pathway during Cell Differentiation and Xenopus Embryonic Development
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Light-mediated Reversible Modulation of the Mitogen-activated Protein Kinase Pathway during Cell Differentiation and Xenopus Embryonic Development

Published on: June 15, 2017

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Last Updated: Jun 14, 2026

Stimulation of Stem Cell Niches and Tissue Regeneration in Mouse Skin by Switchable Protoporphyrin IX-Dependent Photogeneration of Reactive Oxygen Species In Situ
10:05

Stimulation of Stem Cell Niches and Tissue Regeneration in Mouse Skin by Switchable Protoporphyrin IX-Dependent Photogeneration of Reactive Oxygen Species In Situ

Published on: May 8, 2020

Analysis of Oxidative Stress in Zebrafish Embryos
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Analysis of Oxidative Stress in Zebrafish Embryos

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Light-mediated Reversible Modulation of the Mitogen-activated Protein Kinase Pathway during Cell Differentiation and Xenopus Embryonic Development
09:32

Light-mediated Reversible Modulation of the Mitogen-activated Protein Kinase Pathway during Cell Differentiation and Xenopus Embryonic Development

Published on: June 15, 2017

  • Analysis of oxygen sensing pathways and redox-sensitive regulatory elements.

    • Main Results:

    • Dysregulation of redox homeostasis impairs embryo development, causing malformations and lethality.
    • Antioxidant systems counteract ROS/RNS damage, while ROS/RNS also regulate cellular phenotype.
    • New mechanisms involving DNA demethylases, microRNAs, and transcription factors link redox state to gene expression.

    Conclusions:

    • Maintaining maternal/embryonic redox homeostasis is crucial for normal development.
    • Disruptions in redox balance have severe consequences for embryonic viability and organogenesis.
    • Emerging molecular mechanisms highlight the intricate connection between cellular redox status and developmental gene regulation.