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In This Issue
Premature aging in telomerase-deficient zebrafish
Disease Models & Mechanisms 2013 6: 1051-1052;
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Premature aging is a feature of the genetic disorder dyskeratosis congenita (DC). DC is caused by progressive shortening of telomeres, sequences that protect chromosome ends. Telomere shortening occurs in the normal process of aging, and mutations in telomerase, the enzyme that maintains telomere length, can accelerate this process. Although mouse models have provided insight into the role of telomeres in premature aging, they do not recapitulate all human symptoms. Here, María Cayuela’s group show that telomerase-deficient zebrafish demonstrate the hallmark features of premature aging in the first generation, in contrast with mice, which have to be bred for several generations. Intriguingly, the zebrafish mutants show ‘anticipation’ (onset of disease at a younger age in the next generation), which is also apparent in individuals with DC. Reintroduction of telomerase is able to rescue telomere length, confirming the importance of telomerase dosage and paving the way for studies of new therapeutics based on telomerase reactivation. Page 1101

  • Written by editorial staff. © 2013. Published by The Company of Biologists Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution and reproduction in any medium provided that the original work is properly cited.

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Disease Models & Mechanisms 2013 6: 1051-1052;

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