A novel ATG5 interaction with Ku70 potentiates DNA repair upon genotoxic stress.
Journal
Scientific reports
ISSN: 2045-2322
Titre abrégé: Sci Rep
Pays: England
ID NLM: 101563288
Informations de publication
Date de publication:
17 05 2022
17 05 2022
Historique:
received:
22
06
2021
accepted:
26
04
2022
entrez:
17
5
2022
pubmed:
18
5
2022
medline:
21
5
2022
Statut:
epublish
Résumé
The maintenance of cellular homeostasis in living organisms requires a balance between anabolic and catabolic reactions. Macroautophagy (autophagy herein) is determined as one of the major catabolic reactions. Autophagy is an evolutionarily conserved stress response pathway that is activated by various insults including DNA damage. All sorts of damage to DNA potentially cause loss of genetic information and trigger genomic instability. Most of these lesions are repaired by the activation of DNA damage response following DNA repair mechanisms. Here we describe, a novel protein complex containing the autophagy protein ATG5 and the non-homologous end-joining repair system proteins. We discovered for the first time that ATG5 interacted with both Ku80 (XRCC5) and Ku70 (XRCC6). This novel interaction is facilitated mainly via Ku70. Our results suggest that this interaction is dynamic and enhanced upon genotoxic stresses. Strikingly, we identified that ATG5-Ku70 interaction is necessary for DNA repair and effective recovery from genotoxic stress. Therefore, our results are demonstrating a novel, direct, dynamic, and functional interaction between ATG5 and Ku70 proteins that plays a crucial role in DNA repair under genotoxic stress conditions.
Identifiants
pubmed: 35581289
doi: 10.1038/s41598-022-11704-9
pii: 10.1038/s41598-022-11704-9
pmc: PMC9114114
doi:
Substances chimiques
ATG5 protein, human
0
Antigens, Nuclear
0
Autophagy-Related Protein 5
0
DNA-Binding Proteins
0
Ku Autoantigen
EC 4.2.99.-
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
8134Informations de copyright
© 2022. The Author(s).
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