Fluctuations of cell geometry and their nonequilibrium thermodynamics in living epithelial tissue.

Autor:	Olenik M; School of Mathematics, University of Bristol - Bristol BS8 1UG, United Kingdom., Turley J; School of Mathematics, University of Bristol - Bristol BS8 1UG, United Kingdom.; School of Biochemistry, University of Bristol - Bristol BS8 1TW, United Kingdom., Cross S; School of Biochemistry, University of Bristol - Bristol BS8 1TW, United Kingdom., Weavers H; School of Biochemistry, University of Bristol - Bristol BS8 1TW, United Kingdom., Martin P; School of Biochemistry, University of Bristol - Bristol BS8 1TW, United Kingdom., Chenchiah IV; School of Mathematics, University of Bristol - Bristol BS8 1UG, United Kingdom., Liverpool TB; School of Mathematics, University of Bristol - Bristol BS8 1UG, United Kingdom.
Jazyk:	angličtina
Zdroj:	Physical review. E [Phys Rev E] 2023 Jan; Vol. 107 (1-1), pp. 014403.
DOI:	10.1103/PhysRevE.107.014403
Abstrakt:	We measure different contributions to entropy production in a living functional epithelial tissue. We do this by extracting the functional dynamics of development while at the same time quantifying fluctuations. Using the translucent Drosophila melanogaster pupal epithelium as an ideal tissue for high-resolution live imaging, we measure the entropy associated with the stochastic geometry of cells in the epithelium. This is done using a detailed analysis of the dynamics of the shape and orientation of individual cells which enables separation of local and global aspects of the tissue behavior. Intriguingly, we find that we can observe irreversible dynamics in the cell geometries but without a change in the entropy associated with those degrees of freedom, showing that there is a flow of energy into those degrees of freedom. Hence, the living system is controlling how the entropy is being produced and partitioned into its different parts.
Databáze:	MEDLINE
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