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© Institut Pasteur
Macrophages et lymphocytes de souris. Image colorisée.
Publication : Aging cell

Mice with reduced expression of the telomere-associated protein Ft1 develop p53-sensitive progeroid traits

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Aging cell - 10 Apr 2018

La Torre M, Merigliano C, Burla R, Mottini C, Zanetti G, Del Giudice S, Carcuro M, Virdia I, Bucciarelli E, Manni I, Vinciguerra GR, Piaggio G, Riminucci M, Cumano A, Bartolazzi A, Vernì F, Soddu S, Gatti M, Saggio I

Link to Pubmed [PMID] – 29635765

Aging Cell 2018 Apr;:e12730

Human AKTIP and mouse Ft1 are orthologous ubiquitin E2 variant proteins involved in telomere maintenance and DNA replication. AKTIP also interacts with A- and B-type lamins. These features suggest that Ft1 may be implicated in aging regulatory pathways. Here, we show that cells derived from hypomorph Ft1 mutant (Ft1 ) mice exhibit telomeric defects and that Ft1 animals develop progeroid traits, including impaired growth, skeletal and skin defects, abnormal heart tissue, and sterility. We also demonstrate a genetic interaction between Ft1 and p53. The analysis of mice carrying mutations in both Ft1 and p53 (Ft1 ; p53 and Ft1 ; p53 ) showed that reduction in p53 rescues the progeroid traits of Ft1 mutants, suggesting that they are at least in part caused by a p53-dependent DNA damage response. Conversely, Ft1 reduction alters lymphomagenesis in p53 mutant mice. These results identify Ft1 as a new player in the aging process and open the way to the analysis of its interactions with other progeria genes using the mouse model.

https://www.ncbi.nlm.nih.gov/pubmed/29635765