10/23/2026
USF Health Morsani College of Medicine researchers, in partnership with Tampa General Hospital and Hokkaido University in Japan, have uncovered a groundbreaking mechanism that helps metastatic colorectal cancer evade the body’s immune defenses, opening the door to new, more effective therapies for the world’s second-leading cause of cancer deaths.
This international study, published in the Journal of Experimental & Clinical Cancer Research, reveals that a process once believed to occur only inside cancer cells actually plays a crucial role in the environment surrounding metastatic tumors. This discovery links immune suppression, advanced disease and poorer patient survival to the tumor microenvironment.
In the lab, scientists blocked two key components of this pathway, allowing killer T cells to return and attack cancer cells, offering hope for patients whose tumors resist current immunotherapies.
By analyzing 574 human colon cancer samples, researchers found that as cancer spreads, pro-cancer growth lipids (S1P) rise while cancer-killing lipids (ceramide) drop. Advanced mapping showed these molecules concentrate in surrounding tissue and immune cells, fueling inflammation and blocking immune response.
A newly identified three-gene signature signals aggressive cancer and poor response to standard treatments. Targeting the S1P/S1PR3 pathway could help immune cells fight back, potentially improving survival rates for patients with advanced colorectal cancer.
Learn more about this promising research: https://ow.ly/lvSC5100vKC