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Vimentin Intermediate Filament Rings Deform the Nucleus During the First Steps of Adhesion

During cell spreading, cells undergo many changes to their architecture and their mechanical properties. Vimentin, as an integral part of the cell architecture, and its mechanical stability must adapt to the new state of the cell. This study focuses on the structures formed by vimentin during the fi...

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Autores principales: Terriac, Emmanuel, Schütz, Susanne, Lautenschläger, Franziska
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6590062/
https://www.ncbi.nlm.nih.gov/pubmed/31263698
http://dx.doi.org/10.3389/fcell.2019.00106
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author Terriac, Emmanuel
Schütz, Susanne
Lautenschläger, Franziska
author_facet Terriac, Emmanuel
Schütz, Susanne
Lautenschläger, Franziska
author_sort Terriac, Emmanuel
collection PubMed
description During cell spreading, cells undergo many changes to their architecture and their mechanical properties. Vimentin, as an integral part of the cell architecture, and its mechanical stability must adapt to the new state of the cell. This study focuses on the structures formed by vimentin during the first steps of cell adhesion. Very early, ball-like structures, or “knots,” are seen and often vimentin filaments emerge in the shape of rings around the nucleus. Although intermediate filaments are not known to be associated to motor proteins to form contractile systems, these rings can nonetheless strongly deform the cell nucleus. In the first 6 to 12 h of adhesion, these vimentin knots and rings disappear, and the intermediate filament network returns to the state seen before detachment of the cells. As these vimentin structures are very transient in the early steps of cell spreading, they have rarely been described in the literature. However, they can also be seen during mitosis, which is an event that involves partial detachment and re-spreading of the cells. Interestingly, the turnover dynamics of vimentin are reduced in both the knots and rings, compared to vimentin in the lamellipodia. It remains to define how the force is transmitted from the ball-like structures to the rings, and to measure the impact of such strong nuclear deformation on gene expression during cell re-spreading and the rearrangement of the vimentin network.
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spelling pubmed-65900622019-07-01 Vimentin Intermediate Filament Rings Deform the Nucleus During the First Steps of Adhesion Terriac, Emmanuel Schütz, Susanne Lautenschläger, Franziska Front Cell Dev Biol Physiology During cell spreading, cells undergo many changes to their architecture and their mechanical properties. Vimentin, as an integral part of the cell architecture, and its mechanical stability must adapt to the new state of the cell. This study focuses on the structures formed by vimentin during the first steps of cell adhesion. Very early, ball-like structures, or “knots,” are seen and often vimentin filaments emerge in the shape of rings around the nucleus. Although intermediate filaments are not known to be associated to motor proteins to form contractile systems, these rings can nonetheless strongly deform the cell nucleus. In the first 6 to 12 h of adhesion, these vimentin knots and rings disappear, and the intermediate filament network returns to the state seen before detachment of the cells. As these vimentin structures are very transient in the early steps of cell spreading, they have rarely been described in the literature. However, they can also be seen during mitosis, which is an event that involves partial detachment and re-spreading of the cells. Interestingly, the turnover dynamics of vimentin are reduced in both the knots and rings, compared to vimentin in the lamellipodia. It remains to define how the force is transmitted from the ball-like structures to the rings, and to measure the impact of such strong nuclear deformation on gene expression during cell re-spreading and the rearrangement of the vimentin network. Frontiers Media S.A. 2019-06-17 /pmc/articles/PMC6590062/ /pubmed/31263698 http://dx.doi.org/10.3389/fcell.2019.00106 Text en Copyright © 2019 Terriac, Schütz and Lautenschläger. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Physiology
Terriac, Emmanuel
Schütz, Susanne
Lautenschläger, Franziska
Vimentin Intermediate Filament Rings Deform the Nucleus During the First Steps of Adhesion
title Vimentin Intermediate Filament Rings Deform the Nucleus During the First Steps of Adhesion
title_full Vimentin Intermediate Filament Rings Deform the Nucleus During the First Steps of Adhesion
title_fullStr Vimentin Intermediate Filament Rings Deform the Nucleus During the First Steps of Adhesion
title_full_unstemmed Vimentin Intermediate Filament Rings Deform the Nucleus During the First Steps of Adhesion
title_short Vimentin Intermediate Filament Rings Deform the Nucleus During the First Steps of Adhesion
title_sort vimentin intermediate filament rings deform the nucleus during the first steps of adhesion
topic Physiology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6590062/
https://www.ncbi.nlm.nih.gov/pubmed/31263698
http://dx.doi.org/10.3389/fcell.2019.00106
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