Results 11 to 20 of about 68,105 (246)

Generation of mice with longer and better preserved telomeres in the absence of genetic manipulations

open access: yesNature Communications, 2016
Telomere shortening has been linked to some aspects of organismal ageing. Here the authors create chimaeric mice that contain a mix of cells with normal or unnaturally long telomeres, and show chimaeric mice are protected from some forms of ageing ...
Elisa Varela   +4 more
doaj   +1 more source

The pif1 helicase, a negative regulator of telomerase, acts preferentially at long telomeres. [PDF]

open access: yesPLoS Genetics, 2015
Telomerase, the enzyme that maintains telomeres, preferentially lengthens short telomeres. The S. cerevisiae Pif1 DNA helicase inhibits both telomerase-mediated telomere lengthening and de novo telomere addition at double strand breaks (DSB).
Jane A Phillips   +3 more
doaj   +1 more source

XPF activates break-induced telomere synthesis

open access: yesNature Communications, 2022
Here the authors show TERRA R-loops recruit the endonuclease XPF to telomeres, leading to DNA double-strand breaks to activate break-induced telomere synthesis at telomeres that utilize the alternative lengthening of telomeres (ALT) pathway to extend ...
Chia-Yu Guh   +15 more
doaj   +1 more source

Therapeutic effect of androgen therapy in a mouse model of aplastic anemia produced by short telomeres

open access: yesHaematologica, 2015
Aplastic anemia is a rare but life-threatening disorder characterized by cytopenia in at least two of the three blood lineages. A frequent feature of patients with aplastic anemia is that they have shorter telomeres than those of age-matched controls ...
Christian Bär   +3 more
doaj   +1 more source

Multiple cancer pathways regulate telomere protection

open access: yesEMBO Molecular Medicine, 2019
Telomeres are considered as universal anti‐cancer targets, as telomere maintenance is essential to sustain indefinite cancer growth. Mutations in telomerase, the enzyme that maintains telomeres, are among the most frequently found in cancer. In addition,
Leire Bejarano   +9 more
doaj   +1 more source

Telomerase gene therapy in adult and old mice delays aging and increases longevity without increasing cancer

open access: yesEMBO Molecular Medicine, 2012
A major goal in aging research is to improve health during aging. In the case of mice, genetic manipulations that shorten or lengthen telomeres result, respectively, in decreased or increased longevity.
Bruno Bernardes de Jesus   +6 more
doaj   +1 more source

The Rate of Increase of Short Telomeres Predicts Longevity in Mammals

open access: yesCell Reports, 2012
Aberrantly short telomeres result in decreased longevity in both humans and mice with defective telomere maintenance. Normal populations of humans and mice present high interindividual variation in telomere length, but it is unknown whether this is ...
Elsa Vera   +4 more
doaj   +1 more source

Telomeric RNAs are essential to maintain telomeres

open access: yesNature Communications, 2016
The telomeric long-non coding RNA, TERRA, has been proposed in the past to modulate different telomeric functions based on in vitrostudies. Here the authors show, using a genetic deletion approach, that TERRA is transcribed from the 20q subtelomere and ...
Juan José Montero   +3 more
doaj   +1 more source

Safety of Whole-Body Abrogation of the TRF1 Shelterin Protein in Wild-Type and Cancer-Prone Mouse Models

open access: yesiScience, 2019
Summary: Telomeres are considered potential anti-cancer targets. Most studies have focused on telomerase inhibition, but this strategy has largely failed in clinical trials.
Leire Bejarano   +5 more
doaj   +1 more source

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