Does telomere elongation lead to a longer lifespan if cancer is considered?

Details Does telomere elongation lead to a longer lifespan if cancer is considered? Does telomere elongation lead to a longer lifespan if cancer is considered?

2005-07-04

arxiv.org/abs/q-bio/0507006v1

Biology

Quantitative Biology

Populations and Evolution

9 pages including 5 figures

Scientific paper

10.1016/j.physa.2005.08.043

As cell proliferation is limited due to the loss of telomere repeats in DNA of normal somatic cells during division, telomere attrition can possibly play an important role in determining the maximum life span of organisms as well as contribute to the process of biological ageing. With computer simulations of cell culture development in organisms, which consist of tissues of normal somatic cells with finite growth, we otain an increase of life span and life expectancy for longer telomeric DNA in the zygote. By additionally considering a two-mutation model for carcinogenesis and indefinite proliferation by the activation of telomerase, we demonstrate that the risk of dying due to cancer can outweigh the positive effect of longer telomeres on the longevity.

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