Séminaire Jen-François JOANNY

Jeudi 18 janvier 2024, 14h00, Amphi E2 Hybride

Jean-François JOANNY

Collège de France/  Physique des cellules et cancer, Institut Curie, Paris

Growth and mechanics of tissues

The mechanical properties of tissues play an important role for their growth and even in some circumstances for gene expression.
They are particularly important for cancerous tissues and tissues during early development.
I will show in this talk that at a macrocopic scales, tissues can be considered as visco-elastic fluids and show some effects associated
to their activity such as spontaneous flows and active turbulence.
A more microscopic study at the cell scale based on the so-called  vertex model shows that under strong deformations, tissues ate thixothropic fluids and that at long times, they are shear thinning fluids. As also shown by existing numerical simulations, tissues formed by dividing cells do not have a finite yield stress.

Lien teams: https://teams.microsoft.com/l/meetup-join/19%3aac3d3339d1c740e0a3b81b94e49808c1%40thread.tacv2/1698658652943?context=%7b%22Tid%22%3a%22b8c19512-2aed-471d-a8d1-9b06e7da786a%22%2c%22Oid%22%3a%222ea0eb78-4abd-439c-8240-cc89774321a2%22%7d