Pancreatic cancer cells use fibrin to create a biological shield

Researchers have identified a mechanism that allows pancreatic cancer to create a biological shield, making it difficult for the immune system to attack. A study revealed that the tumor is not a uniform mass of cells, but rather an organized structure with a specific division of labor.

A minority of cells, acting as “architects,” produce specific proteins that modify the surrounding environment to benefit the entire tumor mass. These architect cells manipulate the protein fibrin—which normally aids in blood clotting and wound healing—to prevent its natural degradation. This process creates a structural network that serves as a protective refuge for the tumor cells, effectively hiding them from immune responses.