Preservation of DNA integrity and neuronal degeneration

Simona Francisconi1, Mara Codenotti, Giulia Ferrari-Toninelli

  • 1Department of Biomedical Sciences and Biotechnologies, University of Brescia, Medical School, Italy.

Insights

The mismatch repair system (MMR), particularly the MSH2 protein, is crucial for genomic stability and may also play a role in preventing neurodegeneration. Research highlights MSH2

Area of Science:

  • Genetics and Molecular Biology
  • Neuroscience
  • Cancer Biology

Background:

  • The DNA mismatch repair (MMR) system is vital for maintaining genomic stability.
  • MMR proteins are involved in DNA repair, cell cycle arrest, and apoptosis.
  • Genomic instability is implicated in various diseases, including cancer and neurodegeneration.

Purpose of the Study:

  • To summarize recent findings on the role of MSH2 in neurodegeneration.
  • To highlight MSH2's dual function in cancer prevention and neurological processes.

Main Methods:

  • Review of recent experimental data from multiple research groups.
  • Analysis of MSH2's contribution to neurodegenerative pathways.

Main Results:

  • MSH2, a key MMR protein, is implicated in neurodegenerative processes.
  • Evidence suggests MSH2's involvement extends beyond cancer prevention.

Conclusions:

  • MSH2 plays a significant role in neuroprotection.
  • Further research into MMR components may reveal novel therapeutic targets for neurodegenerative diseases.

Related Concept Videos

DNA Damage can Stall the Cell Cycle02:36

DNA Damage can Stall the Cell Cycle

In response to DNA damage, cells can pause the cell cycle to assess and repair the breaks. However, the cell must check the DNA at certain critical stages during the cell cycle. If the cell cycle pauses before DNA replication, the cells will contain twice the amount of DNA. On the other hand, if cells arrest after DNA replication but before mitosis, they will contain four times the normal amount of DNA. With a host of specialized proteins at their disposal,cells must use the right protein at...
DNA Damage Can Stall the Cell Cycle02:36

DNA Damage Can Stall the Cell Cycle

In response to DNA damage, cells can pause the cell cycle to assess and repair the breaks. However, the cell must check the DNA at certain critical stages during the cell cycle. If the cell cycle pauses before DNA replication, the cells will contain twice the amount of DNA. On the other hand, if cells arrest after DNA replication but before mitosis, they will contain four times the normal amount of DNA. With a host of specialized proteins at their disposal,cells must use the right protein at...
Neurogenesis and Regeneration of Nervous Tissue01:15

Neurogenesis and Regeneration of Nervous Tissue

In the CNS, neurogenesis, the birth of new neurons from stem cells, is limited to the hippocampus in adults. In other regions of the brain and spinal cord, neurogenesis is almost non-existent due to inhibitory influences from neuroglia, especially oligodendrocytes, and the absence of growth-stimulating cues. The myelin produced by oligodendrocytes in the CNS inhibits neuronal regeneration. Furthermore, astrocytes proliferate rapidly after neuronal damage, forming scar tissue that physically...
Overview of DNA Repair02:25

Overview of DNA Repair

In order to be passed through generations, genomic DNA must be undamaged and error-free. However, every day, DNA in a cell undergoes several thousand to a million damaging events by natural causes and external factors. Ionizing radiation such as UV rays, free radicals produced during cellular respiration, and hydrolytic damage from metabolic reactions can alter the structure of DNA. Damages caused include single-base alteration, base dimerization, chain breaks, and cross-linkage.
Chemically...
Nucleotide Excision Repair01:38

Nucleotide Excision Repair

DNA Distortion and Damage
Cells are regularly exposed to mutagens—factors in the environment that can damage DNA and generate mutations. UV radiation is one of the most common mutagens and is estimated to introduce a significant number of changes in DNA. These include bends or kinks in the structure, which can block DNA replication or transcription. If these errors are not fixed, the damage can cause mutations, which in turn can result in cancer or disease depending on which sequences are...