Cell cycle control at the first restriction point and its effect on tissue growth

Cell cycle control at the first restriction point and its effect on tissue growth
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第一限制点的细胞周期控制及其对组织生长的影响

DOI:
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发表时间:
2010
影响因子:
1.9
通讯作者:
C. Kao
C. Kao
中科院分区:
数学4区
文献类型:
--
作者:
A. Friedman;Bei Hu;C. Kao

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细胞周期控制在两个限制点,R1和R2。在这两个点上,如果检测到不可修复的损伤,细胞就会发生凋亡。但是在R1,未受损的细胞也决定是进入S期还是进入静止模式,这取决于环境条件(例如,人口过剩、缺氧)。我们考虑在球形组织{r < R(t)}中的群体水平上的该决定的效果。我们证明,如果细胞在R1处具有完全控制,它们可以操纵R(t)的大小以确保0 < c ≤ R(t)≤ C < ∞;模拟进一步表明,R(t)可以近似平稳。在没有这种控制的情况下,R(t)将增加到∞或减少到0。数学模型和分析涉及{r < R(t)}中的偏微分方程系统。
Cell cycle is controlled at two restriction points, R1 and R2. At both points the cell will commit apoptosis if it detects irreparable damage. But at R1 an undamaged cell also decides whether to proceed to the S phase or go into a quiescent mode, depending on the environmental conditions (e.g., overpopulation, hypoxia). We consider the effect of this decision at the population level in a spherical tissue {r < R(t)}. We prove that if the cells have full control at R1, they can manipulate the size of R(t) to ensure that 0 < c ≤ R(t) ≤ C < ∞; simulations further show that R(t) can be made nearly stationary. In the absence of such control, R(t) will either increase to ∞ or decrease to 0. The mathematical model and analysis involve a system of PDEs in {r < R(t)}.
DOI: 10.1529/biophysj.105.060640
发表时间: 2005-12-01
影响因子: 3.4
作者:
Jiang, Y;Pjesivac-Grbovic, J;Freyer, JP
通讯作者: Freyer, JP
DOI: --
发表时间: --
期刊: --
影响因子: --
作者:
Benjamin Ribba;Thierry Colin;Santiago Schnell
通讯作者: Benjamin Ribba;Thierry Colin;Santiago Schnell