Beyond DNA repair and chromosome instability-Fanconi anaemia as a cellular senescence-associated syndrome

Cell Death Differ. 2021 Apr;28(4):1159-1173. doi: 10.1038/s41418-021-00764-5. Epub 2021 Mar 15.

Abstract

Fanconi anaemia (FA) is the most frequent inherited bone marrow failure syndrome, due to mutations in genes encoding proteins involved in replication fork protection, DNA interstrand crosslink repair and replication rescue through inducing double-strand break repair and homologous recombination. Clinically, FA is characterised by aplastic anaemia, congenital defects and cancer predisposition. In in vitro studies, FA cells presented hallmarks defining senescent cells, including p53-p21 axis activation, altered telomere length, mitochondrial dysfunction, chromatin alterations, and a pro-inflammatory status. Senescence is a programme leading to proliferation arrest that is involved in different physiological contexts, such as embryogenesis, tissue remodelling and repair and guarantees tumour suppression activity. However, senescence can become a driving force for developmental abnormalities, aging and cancer. Herein, we summarise the current knowledge in the field to highlight the mutual relationships between FA and senescence that lead us to consider FA not only as a DNA repair and chromosome fragility syndrome but also as a "senescence syndrome".

Publication types

  • Review

MeSH terms

  • Animals
  • Cellular Senescence / genetics*
  • Chromosomal Instability*
  • DNA Breaks, Double-Stranded
  • DNA Repair*
  • DNA Replication
  • Fanconi Anemia / genetics*
  • Fanconi Anemia / metabolism
  • Fanconi Anemia Complementation Group Proteins / genetics*
  • Fanconi Anemia Complementation Group Proteins / metabolism
  • Humans
  • Phenotype

Substances

  • Fanconi Anemia Complementation Group Proteins