Article Dans Une Revue European Physical Journal E: Soft matter and biological physics Année : 2025

Proportional modulation of proliferation and motility under 2D compressive stress depends on mesenchymal phenotype

Résumé

Mechanical stresses, including compression, arise during cancer progression. In solid cancer, especially breast and pancreatic cancers, the rapid tumor growth and the environment remodeling explain their high intensity of compressive forces. However, the sensitivity of compressed cells to targeted therapies remains poorly known. In breast and pancreatic cancer cells, pharmacological PI3K inactivation decreased cell number and induced apoptosis. These effects were accentuated when we applied 2D compression forces in mechanically responsive cells. Compression selectively induced the overexpression of PI3K isoforms and PI3K/AKT pathway activation. Furthermore, transcriptional effects of PI3K inhibition and compression converged to control the expression of an autophagy regulator, GABARAP, whose level was inversely associated with PI3K inhibitor sensitivity under compression. Compression alone blocked autophagy flux in all tested cells, whereas inactivation of basal PI3K activity restored autophagy flux only in mechanically non-responsive compressed cells. This study provides direct evidence for the role of the PI3K/AKT pathway in compression-induced mechanotransduction. PI3K inhibition promotes apoptosis or autophagy, explaining PI3K importance to control cancer cell survival under compression.

Fichier principal
Vignette du fichier
article-resub-corr-black.pdf (1 Mo) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)
Licence

Dates et versions

hal-05244623 , version 1 (01-10-2025)

Licence

Identifiants

Citer

Zacchari Ben Meriem, Moetassem Billah Meksassi, Céline Denais, Julie Guillermet-Guibert, Morgan Delarue. Proportional modulation of proliferation and motility under 2D compressive stress depends on mesenchymal phenotype. European Physical Journal E: Soft matter and biological physics, 2025, 48 (8-9), pp.52. ⟨10.1140/epje/s10189-025-00516-0⟩. ⟨hal-05244623⟩
2117 Consultations
79 Téléchargements

Altmetric

Partager

  • More