dorsal/arxiv
View SchemaDynamic Phase Transitions in Cell Spreading
| Authors | H. -G. Doebereiner, B. J. Dubin-Thaler, G. Giannone, H. S. Xenias, M. P. Sheetz |
|---|---|
| Categories | |
| ArXiv ID | q-bio/0405008 |
| URL | https://arxiv.org/abs/q-bio/0405008 |
| DOI | 10.1103/PhysRevLett.93.108105 |
Abstract
We monitored isotropic spreading of mouse embryonic fibroblasts on fibronectin-coated substrates. Cell adhesion area versus time was measured via total internal reflection fluorescence microscopy. Spreading proceeds in well-defined phases. We found a power-law area growth with distinct exponents a_i in three sequential phases, which we denote basal (a_1=0.4+-0.2), continous (a_2=1.6+-0.9) and contractile (a_3=0.3+-0.2) spreading. High resolution differential interference contrast microscopy was used to characterize local membrane dynamics at the spreading front. Fourier power spectra of membrane velocity reveal the sudden development of periodic membrane retractions at the transition from continous to contractile spreading. We propose that the classification of cell spreading into phases with distinct functional characteristics and protein activity patterns serves as a paradigm for a general program of a phase classification of cellular phenotype. Biological variability is drastically reduced when only the corresponding phases are used for comparison across species/different cell lines.
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"abstract": "We monitored isotropic spreading of mouse embryonic fibroblasts on\nfibronectin-coated substrates. Cell adhesion area versus time was measured via\ntotal internal reflection fluorescence microscopy. Spreading proceeds in\nwell-defined phases. We found a power-law area growth with distinct exponents\na_i in three sequential phases, which we denote basal (a_1=0.4+-0.2), continous\n(a_2=1.6+-0.9) and contractile (a_3=0.3+-0.2) spreading. High resolution\ndifferential interference contrast microscopy was used to characterize local\nmembrane dynamics at the spreading front. Fourier power spectra of membrane\nvelocity reveal the sudden development of periodic membrane retractions at the\ntransition from continous to contractile spreading. We propose that the\nclassification of cell spreading into phases with distinct functional\ncharacteristics and protein activity patterns serves as a paradigm for a\ngeneral program of a phase classification of cellular phenotype. Biological\nvariability is drastically reduced when only the corresponding phases are used\nfor comparison across species/different cell lines.",
"arxiv_id": "q-bio/0405008",
"authors": [
"H. -G. Doebereiner",
"B. J. Dubin-Thaler",
"G. Giannone",
"H. S. Xenias",
"M. P. Sheetz"
],
"categories": [
"q-bio.CB",
"cond-mat.soft",
"physics.bio-ph"
],
"doi": "10.1103/PhysRevLett.93.108105",
"title": "Dynamic Phase Transitions in Cell Spreading",
"url": "https://arxiv.org/abs/q-bio/0405008"
},
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