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Anomalous Diffusion Probes Microstructure Dynamics of Entangled F-Actin Networks
Abstract
We study the thermal motion of colloidal tracer particles in entangled actin filament (F-actin) networks, where the particle radius is comparable to the mesh size of the F-actin network. In this regime, the ensemble-averaged mean-squared displacement of the particles is proportional to tau(gamma), where 0<gamma<1 from 0.1<tau<100 s and depends only on the ratio of the probe radius to mesh size. By directly imaging hundreds of particles over 20 min, we determine this anomalous subdiffusion is due to the dynamics of infrequent and large jumps particles make between distinct pores in the network.
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Cites
T RANSITION P ATH S AMPLING : Throwing Ropes Over Rough Mountain Passes, in the Dark
Bolhuis, P. G., Chandler, D., Dellago, C., & Geissler, P. L. (2002) · Annual Review of Physical Chemistry · doi:10.1146/annurev.physchem.53.082301.113146 · Cited by 1,972
Cited by
Metzler, R., Jeon, J.-H., Cherstvy, A. G., & Barkai, E. (2014) · Phys. Chem. Chem. Phys. · doi:10.1039/c4cp03465a · Cited by 1,765
Quantifying brain microstructure with diffusion MRI: Theory and parameter estimation
Novikov, D. S., Fieremans, E., Jespersen, S. N., & Kiselev, V. G. (2019) · NMR in Biomedicine · doi:10.1002/nbm.3998 · Cited by 581
Random Time-Scale Invariant Diffusion and Transport Coefficients
He, Y., Burov, S., Metzler, R., & Barkai, E. (2008) · Physical Review Letters · doi:10.1103/physrevlett.101.058101 · Cited by 554
Cell mechanics: principles, practices, and prospects
Moeendarbary, E., & Harris, A. R. (2014) · WIREs Systems Biology and Medicine · doi:10.1002/wsbm.1275 · Cited by 342
Metadata
- Authors
- Wong, I. Y., Gardel, M. L., Reichman, D. R., Weeks, E. R., Valentine, M. T., Bausch, A. R., & Weitz, D. A.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2004-04-29
- Volume
- 92
- Issue
- 17
- Pages
- 178101-178101
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2122328014
- Cited by
- 621
- References
- 1
- FWCI
- 32.04
- Type
- journal article
- Language
- en
- Open access
- closed
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- Wong, I. Y., Gardel, M. L., Reichman, D. R., Weeks, E. R., Valentine, M. T., Bausch, A. R., & Weitz, D. A. (2004). Anomalous Diffusion Probes Microstructure Dynamics of Entangled F-Actin Networks. Physical Review Letters. https://doi.org/10.1103/physrevlett.92.178101
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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