Zobrazeno 1 - 10
of 158
pro vyhledávání: '"Ziebert, Falko"'
Autor:
Riedel, Lukas, Wössner, Valentin, Kempf, Dominic, Ziebert, Falko, Bastian, Peter, Schwarz, Ulrich S.
The mechanics of animal cells is strongly determined by stress fibers, which are contractile filament bundles that form dynamically in response to extracellular cues. Stress fibers allow the cell to adapt its mechanics to environmental conditions and
Externí odkaz:
http://arxiv.org/abs/2407.07797
Migration of animal cells is based on the interplay between actin polymerization at the front, adhesion along the cell-substrate interface, and actomyosin contractility at the back. Active gel theory has been used before to demonstrate that actomyosi
Externí odkaz:
http://arxiv.org/abs/2405.16870
Filamentous viruses like influenza and torovirus often display systematic bends and arcs of mysterious physical origin. We propose that such viruses undergo an instability from a cylindrically symmetric to a toroidally curved state. This ``toro-elast
Externí odkaz:
http://arxiv.org/abs/2311.13203
We propose and study a simple, physical model for phagocytosis, i.e. the active, actin-mediated uptake of micron-sized particles by biological cells. The cell is described by the phase field method and the driving mechanisms of uptake are actin ratch
Externí odkaz:
http://arxiv.org/abs/2310.08321
The nucleus of eukaryotic cells typically makes up around 30% of the cell volume and has significantly different mechanics, which can make it effectively up to ten times stiffer than the surrounding cytoplasm. Therefore it is an important element for
Externí odkaz:
http://arxiv.org/abs/2309.12777
Publikováno v:
Phys. Rev. E 108, 044118 (2023) (13 pp)
Tissue dynamics and collective cell motion are crucial biological processes. Their biological machinery is mostly known, and simulation models such as the "active vertex model" (AVM) exist and yield reasonable agreement with experimental observations
Externí odkaz:
http://arxiv.org/abs/2302.04111
Publikováno v:
Communications Physics 6:158 (2023)
Cell crawling on flat substrates is based on intracellular flows of the actin cytoskeleton that are driven by both actin polymerization at the front and myosin contractility at the back. The new experimental tool of optogenetics makes it possible to
Externí odkaz:
http://arxiv.org/abs/2206.05915
We study the dynamics and conformations of a single active semiflexible polymer whose monomers experience a propulsion force perpendicular to the local tangent, with the end beads being different from the inner beads ("end-tailored"). Using Langevin
Externí odkaz:
http://arxiv.org/abs/2202.08623
Viruses are right at the interface of inanimate matter and life. However, recent experiments [T. Sakai, et al., J.~Virol.~{\bf 92}, e01522-17 (2018)] have shown that some influenza strains can actively roll on glycan-covered surfaces. In a previous l
Externí odkaz:
http://arxiv.org/abs/2111.08298
Publikováno v:
Phys. Rev. E 104, 024406 (2021)
The actin cytoskeleton of cells is in continuous motion due to both polymerization of new filaments and their contraction by myosin II molecular motors. Through adhesion to the substrate, such intracellular flow can be converted into cell migration.
Externí odkaz:
http://arxiv.org/abs/2104.14636