Blocking a single protein supercharges the immune system against cancer

A new study suggests a path toward next-generation cancer treatments by training the immune system to respond more efficiently and aggressively. The research was led by PhD student Omri Yosef and Prof. Michael Berger from the Faculty of Medicine at Hebrew University, working with Prof. Magdalena Huber of Philipps University of Marburg and Prof. Eyal Gottlieb of the University of Texas MD Anderson Cancer Center. Together, the international team found that adjusting how immune cells handle energy can greatly improve their ability to eliminate cancer.

At the center of this work is a key idea: when T cells, which play a central role in immune defense, are forced to alter how they convert energy, they become much better at detecting and attacking cancer cells.

Blocking Ant2 Boosts T Cell Power

"By disabling Ant2, we triggered a complete shift in how T cells produce and use energy," explains Prof. Berger. "This reprogramming made them significantly better at recognizing and killing cancer cells." In simpler terms, shutting down this protein pushes immune cells to adapt their metabolism, transforming them into stronger, faster, and more aggressive cancer fighters.

Mitochondria and Cellular Energy Rewiring

Published in Nature Communications, the study focuses on the mitochondria, the "metabolic hub" of cells. By intentionally disrupting a specific energy pathway inside T cells, the researchers effectively rewired the cells' internal engines, placing them in a heightened state of readiness. These modified T cells showed improved endurance, multiplied more quickly, and targeted cancer cells with greater precision.

From Lab Discovery to Potential Treatments

One of the most important findings is that this metabolic shift can be triggered not only through genetic changes but also with drugs. This raises the possibility of translating the discovery into real-world therapies.

This research is part of a broader trend in cancer immunotherapy that goes beyond guiding the immune system and instead focuses on upgrading how it functions at a fundamental level. While further studies and clinical trials are still needed, the results highlight the potential for treatments that harness and enhance the body's own defenses.

"This work highlights how deeply interconnected metabolism and immunity truly are," says Prof. Berger. "By learning how to control the power source of our immune cells, we may be able to unlock therapies that are both more natural and more effective."