Cells Can Sense Ten Times Farther Than Expected, Offering Clues to Cancer Spread

A new study published in PNAS reveals that cells can sense their surroundings far beyond their immediate contact area, especially when acting collectively. Researchers from Washington University in St. Louis demonstrated that this advanced sensing ability, known as Depth Mechano-Sensing, is not limited to abnormal or cancerous cells but can also occur in normal cell groups.

Led by Amit Pathak, the study explored how cells interact with the Extracellular Matrix (ECM), a network of fibrous proteins like collagen that surrounds cells. Individual cells can detect physical cues up to 10 microns away by pulling and deforming collagen fibers. This allows them to sense the stiffness of nearby structures, such as tumors, soft tissues, or bone, and adjust their movement accordingly.

However, the study found that when epithelial cells work together in clusters, their sensing ability dramatically increases. By generating stronger collective forces, these cell groups can deform collagen fibers more extensively and “feel” structures located up to 100 microns away. This extended sensing occurs in stages as cells cluster and begin to migrate, with the gathered mechanical information guiding their direction and behavior.

This discovery has important implications for understanding diseases like Cancer. Cancer cells may exploit this collective sensing mechanism to detect pathways through surrounding tissues, enabling them to spread more efficiently. Their ability to “feel ahead” helps them navigate complex environments and potentially evade barriers.

Overall, the findings highlight a previously underappreciated capability of normal cells and suggest that targeting these sensing mechanisms could offer new strategies to limit cancer progression and metastasis.

REFERENCE: Hongsheng Yu, Amit Pathak. Emergent depth-mechanosensing of epithelial collectives regulates cell clustering and dispersal on layered matrices. Proceedings of the National Academy of Sciences, 2025; 122 (37) DOI: 10.1073/pnas.2423875122