Sanz-Moreno, A. ; Becker, L. ; Xie, K.* ; da Silva Buttkus, P. ; Dragano, N.R.V. ; Aguilar-Pimentel, J.A. ; Amarie, O.V. ; Calzada-Wack, J. ; Kraiger, M. ; Leuchtenberger, S. ; Seisenberger, C. ; Marschall, S. ; Rathkolb, B. ; Scifo, E.* ; Liu, T.* ; Thanabalasingam, A.* ; Sanchez-Vazquez, R.* ; Martinez, P.* ; Blasco, M.A.* ; Savage, S.A.* ; Fuchs, H. ; Ehninger, D.* ; Gailus-Durner, V. ; Hrabě de Angelis, M.
Loss of Ten1 in mice induces telomere shortening and models human dyskeratosis congenita.
Sci. Adv. 11:eadp8093 (2025)
Telomere length regulation is essential for genome stability as short telomeres can trigger cellular senescence and apoptosis constituting an integral aspect of biological aging. Telomere biology disorders (TBDs) such as dyskeratosis congenita (DC) are rare, inherited diseases with known mutations in at least 16 different genes encoding components of the telomere maintenance complexes. The precise role of TEN1, part of the CST complex (CTC1, STN1, and TEN1), and the consequences of its loss of function in vivo are not yet known. We investigated the first viable murine model of Ten1 deficiency created by CRISPR-Cas9-mediated exon 3 deletion. Ten1 homozygous knockout mice present with telomere attrition, short life span, skin hyperpigmentation, aplastic anemia, and cerebellar hypoplasia. Molecular analyses revealed a reduction of proliferating cells, increased apoptosis, and stem cell depletion with activation of the p53/p21 signaling pathway. Our data demonstrate that Ten1 deficiency causes telomere shortening and associates with accelerated aging.
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Publication type
Article: Journal article
Document type
Scientific Article
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Editors
Keywords
Stem-cells; Disease; Complex; Mutations; Biology; Ctc1; Replication; Dysfunction; Mechanisms; Protection
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Language
english
Publication Year
2025
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0
HGF-reported in Year
2025
ISSN (print) / ISBN
2375-2548
e-ISSN
2375-2548
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Volume: 11,
Issue: 15,
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Article Number: eadp8093
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American Association for the Advancement of Science (AAAS)
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Washington, DC [u.a.]
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Peer reviewed
POF-Topic(s)
30201 - Metabolic Health
Research field(s)
Genetics and Epidemiology
PSP Element(s)
G-500600-001
G-500692-001
Grants
Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health
European Union
Helmholtz Future Topic Aging and Metabolic Programming (AMPro)
German Center for Neurodegenerative Diseases (DZNE)
German Center for Diabetes Research (DZD)
German Federal Ministry of Education and Research
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Erfassungsdatum
2025-04-14