Berlin 2024 – wissenschaftliches Programm

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BP: Fachverband Biologische Physik

BP 34: Statistical Physics of Biological Systems III (joint session BP/DY)

BP 34.11: Vortrag

Freitag, 22. März 2024, 12:30–12:45, H 2032

Interfaces as a probe for interactions in biological systems — •Nirvana Caballero — University of Geneva

Controlling cells, either individually or as a proliferating cell front, remains elusive because the plethora of interactions at widely varying lengthscales present in these systems leads to highly complex dynamical and geometrical properties. Interfaces separating regions of heterogeneous composition, or domains, can encode critical information about these systems' underlying physics. I will show how physical theories describing interfaces can be used to capture the microscopic interactions dominating a system. I will give examples at different scales from cell membranes [1], where the heterogeneous domain composition is key to biological function, to migrating colonies of cells, where interfaces reveal the main interactions present in a colony [2].

[1] NC, K. Kruse, T. Giamarchi. Phase separation on surfaces in the presence of matter exchange. Phys. Rev. E 108, L012801 (2023)

[2] Roughness and dynamics of proliferating cell fronts as a probe of cell-cell interactions. G. Rapin*, NC*, I. Gaponenko, B. Ziegler, A. Rawleight, E. Moriggi, T. Giamarchi, S. A. Brown, and P. Pruch, Sci. Rep. 11, 8869 (2021)

Keywords: domains and interfaces; cell front; celular membranes