Molecular Duality of OGG1: From Genomic Guardian to Redox-Sensitive Modulator in Diseases

Ranwei Zhong1, Weiran Zhang1, Xiangping Qu1,2,3

  • 1Department of Physiology, Xiangya School of Basic Medical Sciences, Central South University, Changsha 410078, China.

PubMed

Insights

8-oxoguanine DNA glycosylase 1 (OGG1) repairs oxidative DNA damage but can also promote transcription in diseases. This dual role highlights OGG1 as a potential therapeutic target for inflammation and tumors.

Area of Science:

  • Molecular Biology
  • Genetics
  • Biochemistry

Background:

  • Oxidative DNA damage is linked to inflammation, cancer, and aging.
  • 8-oxoguanine DNA glycosylase 1 (OGG1) is known for repairing oxidative DNA damage.
  • Emerging evidence suggests OGG1 has additional roles beyond DNA repair.

Purpose of the Study:

  • To review the multifaceted roles of OGG1.
  • To explore OGG1's function as a transcription factor.
  • To identify OGG1 as a therapeutic target for oxidative DNA damage-related diseases.

Main Methods:

  • Literature review of OGG1's functions.
  • Analysis of OGG1's involvement in DNA repair pathways.
  • Investigation of OGG1's transcription factor activity.

Main Results:

  • OGG1 actively repairs oxidative DNA damage.
  • OGG1 exhibits transcription factor activity in certain disease contexts.
  • This dual function influences disease development and progression.

Conclusions:

  • OGG1 plays a critical role in both DNA repair and transcriptional regulation.
  • Dysregulation of OGG1 contributes to diseases like cancer and inflammation.
  • Targeting OGG1 presents a promising therapeutic strategy for related disorders.

Related Concept Videos

Covalently Linked Protein Regulators02:04

Covalently Linked Protein Regulators

Proteins can undergo many types of post-translational modifications, often in response to changes in their environment. These modifications play an important role in the function and stability of these proteins. Covalently linked molecules include functional groups, such as methyl, acetyl, and phosphate groups, and also small proteins, such as ubiquitin. There are around 200 different types of covalent regulators that have been identified.
These groups modify specific amino acids in a protein....
7.1K
Exon Recombination02:32

Exon Recombination

The evolution of new genes is critical for speciation. Exon recombination, also known as exon shuffling or domain shuffling, is an important means of new gene formation. It is observed across vertebrates, invertebrates, and in some plants such as potatoes and sunflowers. During exon recombination, exons from the same or different genes recombine and produce new exon-intron combinations, which might evolve into new genes. 
Exon shuffling follows “splice frame rules.” Each exon...
3.7K
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...
136
Peroxisomes01:24

Peroxisomes

Peroxisomes are specialized organelles present in fungi, plant, and animal cells. It can vary in number, size, morphology, and activity depending on the type of tissue and the nutritional state of the cell. For example, cells with active lipid metabolism, such as adipocytes, neurons, and hepatocytes, have more peroxisomes than other cells in the body. Besides their primary role in breaking down complex organic molecules, peroxisomes can also synthesize specific macromolecules and participate in...
14.3K
Epigenetic Regulation01:37

Epigenetic Regulation

Epigenetic changes alter the physical structure of the DNA without changing the genetic sequence and often regulate whether genes are turned on or off. This regulation ensures that each cell produces only proteins necessary for its function. For example, proteins that promote bone growth are not produced in muscle cells. Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
X-chromosome...
3.1K
Oxidation and Reduction of Organic Molecules01:19

Oxidation and Reduction of Organic Molecules

Energy production within a cell involves many coordinated chemical pathways. Most of these pathways are combinations of oxidation and reduction reactions, which occur at the same time. An oxidation reaction strips an electron from an atom in a compound, and the addition of this electron to another compound is a reduction reaction. Because oxidation and reduction usually occur together, these pairs of reactions are called redox reactions.
The removal of an electron from a molecule, results in a...
7.3K