Alignment of cellular motility forces with tissue flow as a mechanism for efficient wound healing

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dc.citation.journalTitlePNAS Early Editionen_US
dc.contributor.authorBasan, Markusen_US
dc.contributor.authorElgeti, Jensen_US
dc.contributor.authorHannezo, Edouarden_US
dc.contributor.authorRappel, Wouter-Janen_US
dc.contributor.authorLevine, Herberten_US
dc.contributor.orgCenter for Theoretical Biological Physicsen_US
dc.contributor.orgBioengineeringen_US
dc.contributor.orgCenter for Theoretical Biological Physicsen_US
dc.date.accessioned2013-03-18T20:41:20Zen_US
dc.date.available2014-03-19T05:10:03Zen_US
dc.date.issued2012en_US
dc.description.abstractRecent experiments have shown that spreading epithelial sheets exhibit a long-range coordination of motility forces that leads to a buildup of tension in the tissue, which may enhance cell division and the speed of wound healing. Furthermore, the edges of these epithelial sheets commonly show finger-like protrusions whereas the bulk often displays spontaneous swirls of motile cells. To explain these experimental observations, we propose a simple flocking-type mechanism, in which cells tend to align their motility forceswith their velocity. Implementing this idea in amechanical tissue simulation, the proposed model gives rise to efficient spreading and can explain the experimentally observed long-range alignment of motility forces in highly disordered patterns, as well as the buildup of tensile stress throughout the tissue. Our model also qualitatively reproduces the dependence of swirl size and swirl velocity on cell density reported in experiments and exhibits an undulation instability at the edge of the spreading tissue commonly observed in vivo. Finally, we study the dependence of colony spreading speed on important physical and biological parameters and derive simple scaling relations that show that coordination of motility forces leads to an improvement of the wound healing process for realistic tissue parameters.en_US
dc.embargo.terms1 yearen_US
dc.identifier.citationBasan, Markus, Elgeti, Jens, Hannezo, Edouard, et al.. "Alignment of cellular motility forces with tissue flow as a mechanism for efficient wound healing." <i>PNAS Early Edition,</i> (2012) National Academy of Science: http://dx.doi.org/10.1073/pnas.1219937110.en_US
dc.identifier.doihttp://dx.doi.org/10.1073/pnas.1219937110en_US
dc.identifier.urihttps://hdl.handle.net/1911/70701en_US
dc.language.isoengen_US
dc.publisherNational Academy of Scienceen_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.titleAlignment of cellular motility forces with tissue flow as a mechanism for efficient wound healingen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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