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Updated: Jun 27, 2026

Utilizing Murine Inducible Telomerase Alleles in the Studies of Tissue Degeneration/Regeneration and Cancer
Published on: April 13, 2015
Telomerase reverse transcriptase delays aging in cancer-resistant mice
Antonia Tomás-Loba1, Ignacio Flores, Pablo J Fernández-Marcos
1Telomeres and Telomerase Group, Molecular Oncology Program, Spanish National Cancer Centre CNIO, Madrid, Spain.
Telomerase reverse transcriptase (TERT) expression delays aging in cancer-resistant mice. This study shows TERT can provide anti-aging benefits in mammals by improving tissue health and extending lifespan.
Area of Science:
- Molecular Biology
- Genetics
- Gerontology
Background:
- Telomeres shorten with cell division, limiting cell lifespan.
- Telomerase counteracts telomere shortening, conferring proliferative potential.
- Telomerase's role in organismal aging is unclear due to cancer risks.
Purpose of the Study:
- To investigate the anti-aging effects of telomerase reverse transcriptase (TERT) in a mammalian model.
- To assess TERT's impact on aging in cancer-resistant mice.
Main Methods:
- Constitutive expression of TERT in mice with enhanced tumor suppressor genes (p53, p16, p19ARF).
- Evaluation of epithelial barrier function (skin, intestine).
- Assessment of lifespan and systemic aging indicators.
Main Results:
- TERT overexpression improved epithelial barrier integrity in skin and intestines.
- Mice with TERT overexpression exhibited a systemic delay in aging.
- Median lifespan was extended in the TERT-overexpressing mice.
Conclusions:
- Constitutive TERT expression demonstrates anti-aging activity in a mammalian organism.
- TERT can delay aging without promoting cancer in a cancer-resistant background.
- This provides a potential therapeutic avenue for age-related decline.
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