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Mechanisms of dealing with DNA damage in terminally differentiated cells

P Fortini1, E Dogliotti

  • 1Department of Environment and Primary Prevention, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161 Rome, Italy.

Mutation Research
|November 28, 2009
PubMed

Insights

Living cells possess a DNA damage response to maintain genomic integrity through repair or apoptosis. This review explores how post-mitotic cells, unlike proliferating cells, utilize distinct strategies for DNA protection.

Area of Science:

  • Molecular Biology
  • Cell Biology
  • Genomics

Background:

  • Cells possess a DNA damage response (DDR) to protect genomic integrity from insults.
  • The DDR involves DNA repair and apoptosis to eliminate damaged cells.
  • DDR mechanisms are well-studied in proliferating cells, integrated with cell cycle signaling.

Purpose of the Study:

  • To review DNA repair, signaling, and cell death mechanisms in post-mitotic cells.
  • To compare genome protection strategies in post-mitotic versus proliferating cells.

Main Methods:

  • Literature review of existing research on DNA damage response in various cell types.
  • Analysis of mechanisms governing DNA repair, damage signaling, and apoptosis.
  • Comparative study of terminally differentiated and proliferating cells.

Main Results:

  • Post-mitotic cells employ unique strategies for maintaining genomic integrity.
  • These strategies differ from those observed in actively dividing cells.
  • The cell cycle machinery's integration with DDR is less prominent in post-mitotic cells.

Conclusions:

  • Terminally differentiated cells have evolved distinct mechanisms for genome protection.
  • Understanding these differences is crucial for comprehending cellular aging and disease.
  • Further research into post-mitotic cell DDR is warranted.

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