Stabilization of telomeres in nonlinear models of proliferating cell lines

被引:7
作者
Dyson, Janet
Sanchez, Eva
Villella-Bressan, Rosanna
Webb, Glenn F.
机构
[1] Univ Oxford, Mansfield Coll, Oxford OX1 2JD, England
[2] ETSI Ind, Dept Matemat Aplicada, Madrid 28006, Spain
[3] Univ Padua, Dipartimento Matemat Pura & Applicata, Padua, Italy
[4] Vanderbilt Univ, Dept Math, Nashville, TN USA
关键词
telomere; Hayflick limit; logistic nonlinearity; equilibrium; abstract evolution equation; cell proliferation;
D O I
10.1016/j.jtbi.2006.08.023
中图分类号
Q [生物科学];
学科分类号
07 [理学]; 0710 [生物学]; 09 [农学];
摘要
We analyse an age-structured model of telomere loss in a proliferating cell population. The cell population is divided into telomere classes, which shorten each round of division. The model consists of a nonlinear system of partial differential equations for the telomere classes. We prove that if the highest telomere class is exempted from mortality, then all the classes stabilize to a nontrivial equilibrium dependent on the initial state of cells in the highest telomere class. (c) 2006 Elsevier Ltd. All rights reserved.
引用
收藏
页码:400 / 408
页数:9
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