The self-organised, non-equilibrium dynamics of spontaneous cancerous buds

TL;DR

This study investigates the physical principles behind the self-organized, non-equilibrium formation of tumor buds in glioblastoma, revealing that mechanical forces and cell interactions drive complex, statistically correlated growth patterns.

Contribution

It introduces a theoretical model and experimental analysis of tumor budding, highlighting the role of mechanical forces in non-equilibrium self-organization of cancer cell structures.

Findings

Tumor buds emerge from monolayers through a self-organized process.

Mechanical forces and cell adhesions drive the formation of complex patterns.

Uncontrolled proliferation results in statistically correlated spatio-temporal structures.

Abstract

Tissue self-organization into defined and well-controlled three-dimensional structures is essential during development for the generation of organs. A similar, but highly deranged process might also occur during the aberrant growth of cancers, which frequently display a loss of the orderly structures of the tissue of origin, but retain a multicellular organization in the form of spheroids, strands, and buds. The latter structures are often seen when tumors masses switch to an invasive behavior into surrounding tissues. However, the general physical principles governing the self-organized architectures of tumor cell populations remain by and large unclear. In this work, we perform in-vitro experiments to characterize the growth properties of glioblastoma budding emerging from monolayers. Using a theoretical model and numerical tools here we find that such a topological transition is a self-organised, non-equilibrium phenomenon driven by the trade--off of mechanical forces and physical interactions exerted at cell-cell and cell-substrate adhesions. Notably, the unstable disorder states of uncontrolled cellular proliferation macroscopically emerge as complex spatio--temporal patterns that evolve statistically correlated by a universal law.