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Alignment interactions drive structural transitions in biological tissues
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Experimental evidence shows that there is a feedback between cell shape and cell motion. How this feedback impacts the collective behavior of dense cell monolayers remains an open question. We investigate the effect of a feedback that tends to align the cell crawling direction with cell elongation in a biological tissue model. We find that the alignment interaction promotes nematic patterns in the fluid phase that eventually undergo a nonequilibrium phase transition into a quasihexagonal solid. Meanwhile, highly asymmetric cells do not undergo the liquid-to-solid transition for any value of the alignment coupling. In this regime, the dynamics of cell centers and shape fluctuation show features typical of glassy systems.
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PAOLUZZI, Matteo, et al. Alignment interactions drive structural transitions in biological tissues. Physical Review e. 2021. Vol. 104, num. 4, pags. 044606. ISSN 2470-0045. [consulted: 19 of August of 2026]. Available at: https://hdl.handle.net/2445/184778