Telomere Dysfunction Increases Mutation Rate and Genomic Instability

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Telomere Dysfunction Increases Mutation Rate and Genomic Instability

The increased tumor incidence in telomerase null mice suggests that telomere dysfunction induces genetic instability. To test this directly, we examined mutation rate in the absence of telomerase in S. cerevisiae. The mutation rate in the CAN1 gene increased 10- to 100-fold in est1Delta strains as telomeres became dysfunctional. This increased mutation rate resulted from an increased frequency ...

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Mitochondrial dysfunction and oxidative stress have been implicated in cellular senescence, apoptosis, aging and aging-associated pathologies. Telomere shortening and genomic instability have also been associated with replicative senescence, aging and cancer. Here we show that mitochondrial dysfunction leads to telomere attrition, telomere loss, and chromosome fusion and breakage, accompanied b...

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Telomere dysfunction and genome instability.

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ژورنال

عنوان ژورنال: Cell

سال: 2001

ISSN: 0092-8674

DOI: 10.1016/s0092-8674(01)00457-3