Open Access
Open access
PLoS Genetics, volume 9, issue 1, pages e1003214

Telomerase Is Required for Zebrafish Lifespan

Henriques Catarina M 1
Carneiro Madalena C. 1
Tenente Inês M 2
Jacinto António 3
Ferreira Miguel Godinho 1
1
 
Instituto Gulbenkian De Ciência, Oeiras, Portugal
2
 
Instituto Gulbenkian de Ciência, Oeiras, Portugal,
3
 
Instituto de Medicina Molecular, Lisbon, Portugal,
Publication typeJournal Article
Publication date2013-01-17
Journal: PLoS Genetics
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor4.5
ISSN15537390, 15537404
Cancer Research
Molecular Biology
Genetics
Ecology, Evolution, Behavior and Systematics
Genetics (clinical)
Abstract
Telomerase activity is restricted in humans. Consequentially, telomeres shorten in most cells throughout our lives. Telomere dysfunction in vertebrates has been primarily studied in inbred mice strains with very long telomeres that fail to deplete telomeric repeats during their lifetime. It is, therefore, unclear how telomere shortening regulates tissue homeostasis in vertebrates with naturally short telomeres. Zebrafish have restricted telomerase expression and human-like telomere length. Here we show that first-generation tert−/− zebrafish die prematurely with shorter telomeres. tert−/− fish develop degenerative phenotypes, including premature infertility, gastrointestinal atrophy, and sarcopaenia. tert−/− mutants have impaired cell proliferation, accumulation of DNA damage markers, and a p53 response leading to early apoptosis, followed by accumulation of senescent cells. Apoptosis is primarily observed in the proliferative niche and germ cells. Cell proliferation, but not apoptosis, is rescued in tp53−/−tert−/− mutants, underscoring p53 as mediator of telomerase deficiency and consequent telomere instability. Thus, telomerase is limiting for zebrafish lifespan, enabling the study of telomere shortening in naturally ageing individuals.

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GOST Copy
Henriques C. M. et al. Telomerase Is Required for Zebrafish Lifespan // PLoS Genetics. 2013. Vol. 9. No. 1. p. e1003214.
GOST all authors (up to 50) Copy
Henriques C. M., Carneiro M. C., Tenente I. M., Jacinto A., Ferreira M. G. Telomerase Is Required for Zebrafish Lifespan // PLoS Genetics. 2013. Vol. 9. No. 1. p. e1003214.
RIS |
Cite this
RIS Copy
TY - JOUR
DO - 10.1371/journal.pgen.1003214
UR - https://doi.org/10.1371%2Fjournal.pgen.1003214
TI - Telomerase Is Required for Zebrafish Lifespan
T2 - PLoS Genetics
AU - Henriques, Catarina M
AU - Carneiro, Madalena C.
AU - Tenente, Inês M
AU - Jacinto, António
AU - Ferreira, Miguel Godinho
PY - 2013
DA - 2013/01/17 00:00:00
PB - Public Library of Science (PLoS)
SP - e1003214
IS - 1
VL - 9
PMID - 23349637
SN - 1553-7390
SN - 1553-7404
ER -
BibTex |
Cite this
BibTex Copy
@article{2013_Henriques,
author = {Catarina M Henriques and Madalena C. Carneiro and Inês M Tenente and António Jacinto and Miguel Godinho Ferreira},
title = {Telomerase Is Required for Zebrafish Lifespan},
journal = {PLoS Genetics},
year = {2013},
volume = {9},
publisher = {Public Library of Science (PLoS)},
month = {jan},
url = {https://doi.org/10.1371%2Fjournal.pgen.1003214},
number = {1},
pages = {e1003214},
doi = {10.1371/journal.pgen.1003214}
}
MLA
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MLA Copy
Henriques, Catarina M., et al. “Telomerase Is Required for Zebrafish Lifespan.” PLoS Genetics, vol. 9, no. 1, Jan. 2013, p. e1003214. https://doi.org/10.1371%2Fjournal.pgen.1003214.
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