Long telomeres are preferentially extended during recombination-mediated telomere maintenance.
Long telomeres are preferentially extended during recombination-mediated telomere maintenance.
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DOI:
10.1038/nsmb.2034
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发表时间:
2011-04
影响因子:
16.8
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中科院分区:
文献类型:
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Most human somatic cells do not express telomerase. Consequently, with each cell division their telomeres progressively shorten until replicative senescence is induced. Approximately 15% of human cancers maintain their telomeres using telomerase-independent, recombination-based mechanisms collectively termed Alternative Lengthening of Telomeres (ALT). In the yeast Saccharomyces cerevisiae, ALT cells are referred to as “survivors”. One type of survivor (type II) resembles human ALT cells in that both are defined by the amplification of telomeric repeats. We analyzed recombination-mediated telomere extension events at individual telomeres in telomerase-negative yeast during type II survivor formation and find that long telomeres are preferentially extended. Furthermore, we find that senescent cells with long telomeres are more efficient at bypassing senescence via the type II pathway. We speculate that telomere length may be important in determining whether cancer cells utilize telomerase or ALT to bypass replicative senescence.
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DOI:
10.1126/science.1170633
发表时间:
2009-11-13
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
de Lange T
通讯作者:
de Lange T
影响因子:
4.5
作者:
Bonetti D;Clerici M;Anbalagan S;Martina M;Lucchini G;Longhese MP
通讯作者:
Longhese MP
影响因子:
9.2
作者:
Huang, PH;Pryde, FE;Louis, EJ
通讯作者:
Louis, EJ
影响因子:
11.4
作者:
BRYAN, TM;ENGLEZOU, A;REDDEL, RR
通讯作者:
REDDEL, RR
影响因子:
21.3
作者:
Abdallah, Pauline;Luciano, Pierre;Runge, Kurt W.;Lisby, Michael;Geli, Vincent;Gilson, Eric;Teixeira, M. Teresa
通讯作者:
Teixeira, M. Teresa