Thomas Bittig et al 2008 New J. Phys. 10 063001 doi:10.1088/1367-2630/10/6/063001
Dynamics of anisotropic tissue growth
Thomas Bittig1, Ortrud Wartlick2, Anna Kicheva2, Marcos González-Gaitán2,3 and Frank Jülicher1,3
Show affiliationsWe study the mechanics of tissue growth via cell division and cell death (apoptosis). The rearrangements of cells can on large scales and times be captured by a continuum theory which describes the tissue as an effective viscous material with active stresses generated by cell division. We study the effects of anisotropies of cell division on cell rearrangements and show that average cellular trajectories exhibit anisotropic scaling behaviors. If cell division and apoptosis balance, there is no net growth, but for anisotropic cell division the tissue undergoes spontaneous shear deformations. Our description is relevant for the study of developing tissues such as the imaginal disks of the fruit fly Drosophila melanogaster, which grow anisotropically.
- PACS
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87.17.Jj Cell locomotion, chemotaxis
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- Dates
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Issue 6 (June 2008)
Received 13 November 2007
Published 3 June 2008
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Dynamics of anisotropic tissue growth
Thomas Bittig et al 2008 New J. Phys. 10 063001
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