The role of RAS oncogenes in controlling epithelial mechanics

Area of Science:

• Oncology
• Cell Biology
• Biophysics

Background:

• RAS mutations are central drivers of cancer and targets for therapy.
• Oncogenic Ras proteins activate signaling pathways like ERK and PI3K, promoting cell growth and survival.
• Emerging evidence links RAS oncogenes to altered mechanical properties of cancer cells and tissues.

Purpose of the Study:

• To explore the role of oncogenic RAS in regulating cellular mechanical phenotypes.
• To understand how RAS-induced mechanical changes contribute to oncogenic transformation in single cells and tissues.

Main Methods:

• Analysis of RAS activation effects on actin organization and actomyosin contractility.
• Investigation of changes in cell rheology, substrate adhesion, and mechanosensing pathways (YAP/TAZ).
• Examination of how these mechanical alterations influence collective cell behavior and tissue-level deformations.

Main Results:

• RAS activation modifies actin cytoskeleton organization and actomyosin contractility.
• Altered cell mechanics impact cell rheology and mechanosensing.
• These changes facilitate tissue deformation and malignant cell expansion in collective settings.

Conclusions:

• Understanding RAS-mediated mechanical alterations is crucial for comprehending tumor formation in RAS-mutant cancers.
• Investigating cell mechanics provides insights into the morphogenetic processes underlying cancer progression.
• Targeting mechanical pathways may offer novel therapeutic strategies for RAS-driven cancers.