Monogenic Disorders of ROS Production and the Primary Anti-Oxidative Defense

Nana-Maria Grüning1, Markus Ralser1,2,3

  • 1Department of Biochemistry, Charité Universitätsmedizin Berlin, 10117 Berlin, Germany.

Biomolecules
|February 24, 2024
PubMed

Insights

Oxidative stress disrupts cellular balance, impacting numerous diseases. Understanding redox metabolism genes and genetic disorders is key to addressing conditions like cardiovascular disease, neurodegeneration, and cancer.

Area of Science:

  • Biochemistry
  • Genetics
  • Molecular Biology

Background:

  • Oxidative stress, an imbalance in reactive oxygen species (ROS) and antioxidant defenses, is central to human disease pathogenesis.
  • Redox metabolism, involving enzymes and genes, regulates ROS levels and cellular homeostasis.

Purpose of the Study:

  • To review key human genes involved in ROS generation, detoxification, and NADPH production.
  • To examine genetic disorders that disrupt redox metabolism and homeostasis.
  • To connect insights from monogenic metabolic diseases to chronic disorders.

Main Methods:

  • Literature review of human genes and genetic disorders related to redox metabolism.
  • Analysis of the role of specific proteins in ROS management and NADPH production.
  • Synthesis of findings from inherited metabolic diseases.

Main Results:

  • Identified critical human genes regulating ROS production and detoxification.
  • Highlighted genetic disorders causing redox metabolism dysregulation.
  • Established links between redox imbalance and chronic diseases.

Conclusions:

  • Redox metabolism is vital for cellular health and disease prevention.
  • Genetic insights into redox pathways offer therapeutic targets for chronic conditions.
  • Understanding these pathways aids in unraveling complex disease mechanisms.

Related Concept Videos

Electron Transport Chain: Complex I and II01:46

Electron Transport Chain: Complex I and II

The mitochondrial electron transport chain (ETC) is the main energy generation system in the eukaryotic cells. However, mitochondria also produce cytotoxic reactive oxygen species (ROS) due to the large electron flow during oxidative phosphorylation. While Complex I is one of the primary sources of superoxide radicals, ROS production by Complex II is uncommon and may only be observed in cancer cells with mutated complexes.
ROS generation is regulated and maintained at moderate levels necessary...
13.3K
The Electron Transport Chain01:30

The Electron Transport Chain

The electron transport chain or oxidative phosphorylation is an exothermic process in which free energy released during electron transfer reactions is coupled to ATP synthesis. This process is a significant source of energy in aerobic cells, and therefore inhibitors of the electron transport chain can be detrimental to the cell's metabolic processes.
Inhibitors of the electron transport chain
Rotenone, a widely used pesticide, prevents electron transfer from Fe-S cluster to ubiquinone or Q...
16.7K
Protein Import into the Peroxisomes01:27

Protein Import into the Peroxisomes

Cells contain membrane-bound organelles called peroxisomes that oxidize organic molecules by transferring hydrogen atoms to oxygen, producing hydrogen peroxide. Peroxisomes enzymatically convert the released hydrogen peroxide into water and oxygen.
Peroxisomal Protein Import:
Peroxisomes lack the genetic machinery required to code for their own proteins. Hence, most peroxisomal membrane, lumenal and transmembrane proteins are synthesized in the cytoplasm or ER and transported to the peroxisome...
3.5K
Electron Transport Chain: Complex III and IV01:43

Electron Transport Chain: Complex III and IV

During the electron transport chain, electrons from NADH and FADH2 are first transferred to complexes I and II, respectively. These two complexes then transfer the electrons to ubiquinol, which carries them further to complex III. Complex III passes the electrons across the intermembrane space to Cyt c, which carries them further to complex IV. Complex IV donates electrons to oxygen and reduces it to water. As electrons pass through complexes I, III, and IV, the energy released aids the pumping...
7.5K
Radical Autoxidation01:20

Radical Autoxidation

The oxidation of an organic compound in the presence of air or oxygen is called autoxidation. For example, cumene reacts with oxygen to form hydroperoxide. Autoxidation involves initiation, propagation, and termination steps. Many organic compounds are susceptible to autoxidation—especially ethers in the presence of oxygen, which form hydroperoxides. Even though this reaction is slow, old ether bottles contain small amounts of peroxide, which leads to laboratory explosions during ether...
2.1K
Disorders of Erythrocytes01:27

Disorders of Erythrocytes

Disorders of erythrocytes, or red blood cells (RBCs), include a range of conditions affecting their number, shape, or function.
Erythrocyte disorders can be broadly categorized into two main types: anemic and polycythemic conditions.
A low oxygen-carrying capacity of the blood due to the loss, lower production, or destruction of erythrocytes is termed anemia. Hemorrhagic anemia, for example, occurs when bleeding from an external wound or internal ulcer reduces erythrocyte counts.
On the other...
937