Constructing the energy landscape for genetic switching system driven by intrinsic noise.
Constructing the energy landscape for genetic switching system driven by intrinsic noise.
复制标题
构建本征噪声驱动的基因转换系统的能量格局
DOI:
10.1371/journal.pone.0088167
复制
发表时间:
2014
期刊:
影响因子:
3.7
通讯作者:
Li T
中科院分区:
文献类型:
--
作者:
Lv C;Li X;Li F;Li T
Genetic switching driven by noise is a fundamental cellular process in genetic regulatory networks. Quantitatively characterizing this switching and its fluctuation properties is a key problem in computational biology. With an autoregulatory dimer model as a specific example, we design a general methodology to quantitatively understand the metastability of gene regulatory system perturbed by intrinsic noise. Based on the large deviation theory, we develop new analytical techniques to describe and calculate the optimal transition paths between the on and off states. We also construct the global quasi-potential energy landscape for the dimer model. From the obtained quasi-potential, we can extract quantitative results such as the stationary distributions of mRNA, protein and dimer, the noise strength of the expression state, and the mean switching time starting from either stable state. In the final stage, we apply this procedure to a transcriptional cascades model. Our results suggest that the quasi-potential energy landscape and the proposed methodology are general to understand the metastability in other biological systems with intrinsic noise.
登录
查看更多内容
影响因子:
56.9
作者:
Maamar, Hedia;Raj, Arjun;Dubnau, David
通讯作者:
Dubnau, David
影响因子:
3
作者:
E, W;Ren, WQ;Vanden-Eijnden, E
通讯作者:
Vanden-Eijnden, E
DOI:
10.3934/dcdsb.2010.14.495
发表时间:
2010-09-01
影响因子:
1.2
作者:
Intep, Somkid;Higham, Desmond J.
通讯作者:
Higham, Desmond J.
影响因子:
4.4
作者:
Gillespie, DT
通讯作者:
Gillespie, DT
DOI:
10.1073/pnas.0408507102
发表时间:
2005-03-08
影响因子:
11.1
作者:
Hooshangi, S;Thiberge, S;Weiss, R
通讯作者:
Weiss, R