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Shape-tension coupling produces nematic order in an epithelium vertex model

Abstract:
We study the vertex model for epithelial tissue mechanics extended to include coupling between the cell shapes and tensions in cell-cell junctions. This coupling represents an active force which drives the system out of equilibrium and leads to the formation of nematic order interspersed with prominent, long-lived +1 defects. The defects in the nematic ordering are coupled to the shape of the cell tiling, affecting cell areas and coordinations. This intricate interplay between cell shape, size, and coordination provides a possible mechanism by which tissues could spontaneously develop long-range polarity through local mechanical forces without resorting to long-range chemical patterning.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1103/physrevlett.131.228301

Authors


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Role:
Author
ORCID:
0000-0003-3112-8114
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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Theoretical Physics
Oxford college:
St Hilda's College
Role:
Author
ORCID:
0000-0001-8268-5469


Publisher:
American Physical Society
Journal:
Physical Review Letters More from this journal
Volume:
131
Issue:
22
Article number:
228301
Place of publication:
United States
Publication date:
2023-11-27
Acceptance date:
2023-10-20
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
Pmid:
38101347


Language:
English
Keywords:
Pubs id:
1582026
Local pid:
pubs:1582026
Deposit date:
2024-01-09

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