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How dynamic prestress governs the shape of living systems, from the subcellular to tissue scale
Cells and tissues change shape both to carry out their function and during pathology. In most cases, these deformations are driven from within the systems themselves. This is permitted by a range of molecular actors, such as active crosslinkers and ion pumps, whose activity is biologically controlle...
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Published in: | Interface focus 2022-10, Vol.12 (6) |
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creator | Erlich, Alexander Pearce, Philip Mayo, Romina Plitman Jensen, Oliver Chernyavsky, Igor |
description | Cells and tissues change shape both to carry out their function and during pathology. In most cases, these deformations are driven from within the systems themselves. This is permitted by a range of molecular actors, such as active crosslinkers and ion pumps, whose activity is biologically controlled in space and time. The resulting stresses are propagated within complex and dynamical architectures like networks or cell aggregates. From a mechanical point of view, these effects can be seen as the generation of prestress or prestrain, resulting from either a contractile or growth activity. In this review, we present this concept of prestress and the theoretical tools available to conceptualize the statics and dynamics of living systems. We then describe a range of phenomena where prestress controls shape changes in biopolymer networks (especially the actomyosin cytoskeleton and fibrous tissues) and cellularized tissues. Despite the diversity of scale and organization, we demonstrate that these phenomena stem from a limited number of spatial distributions of prestress, which can be categorized as heterogeneous, anisotropic or differential. We suggest that in addition to growth and contraction, a third type of prestress—topological prestress—can result from active processes altering the microstructure of tissue. |
doi_str_mv | 10.1098/rsfs.2022.0038 |
format | article |
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source | Open Access: PubMed Central; Royal Society Publishing Jisc Collections Royal Society Journals Read & Publish Transitional Agreement 2025 (reading list) |
subjects | Biochemistry, Molecular Biology Biophysics Life Sciences |
title | How dynamic prestress governs the shape of living systems, from the subcellular to tissue scale |
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