Identifying the mechanism for superdiffusivity in mouse fibroblast motility
Identifying the mechanism for superdiffusivity in mouse fibroblast motility
复制标题
确定小鼠成纤维细胞运动超扩散机制
DOI:
10.1371/journal.pcbi.1006732
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发表时间:
2017
影响因子:
4.3
通讯作者:
M. L. Manning
中科院分区:
文献类型:
--
作者:
G. Passucci;M. Brasch;James H Henderson;V. Zaburdaev;M. L. Manning
We seek to characterize the motility of mouse fibroblasts on 2D substrates. Utilizing automated tracking techniques, we find that cell trajectories are super-diffusive, where displacements scale faster than t1/2 in all directions. Two mechanisms have been proposed to explain such statistics in other cell types: run and tumble behavior with Lévy-distributed run times, and ensembles of cells with heterogeneous speed and rotational noise. We develop an automated toolkit that directly compares cell trajectories to the predictions of each model and demonstrate that ensemble-averaged quantities such as the mean-squared displacements and velocity autocorrelation functions are equally well-fit by either model. However, neither model correctly captures the short-timescale behavior quantified by the displacement probability distribution or the turning angle distribution. We develop a hybrid model that includes both run and tumble behavior and heterogeneous noise during the runs, which correctly matches the short-timescale behaviors and indicates that the run times are not Lévy distributed. The analysis tools developed here should be broadly useful for distinguishing between mechanisms for superdiffusivity in other cells types and environments.
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影响因子:
12.5
作者:
Bi, Dapeng;Yang, Xingbo;Manning, M. Lisa
通讯作者:
Manning, M. Lisa
影响因子:
44.1
作者:
Marchetti, M. C.;Joanny, J. F.;Simha, R. Aditi
通讯作者:
Simha, R. Aditi
DOI:
10.1039/c3ib20196a
发表时间:
2013-03
期刊:
Integrative biology : quantitative biosciences from nano to macro
影响因子:
--
作者:
Kraning-Rush CM;Carey SP;Lampi MC;Reinhart-King CA
通讯作者:
Reinhart-King CA
影响因子:
3.7
作者:
Taktikos J;Stark H;Zaburdaev V
通讯作者:
Zaburdaev V
DOI:
10.1073/pnas.0604460103
发表时间:
2006-07-18
影响因子:
11.1
作者:
Zaman, Muhammad H.;Trapani, Linda M.;Matsudaira, Paul
通讯作者:
Matsudaira, Paul