Colorectal cancer: Scientists find a way to supercharge immune cells

A 'Star Wars' approach to cancer research

Scientists at Cold Spring Harbor Laboratory (CSHL) have uncovered a potential game-changer in the fight against cancer, specifically targeting the aggressive colorectal cancer that’s increasingly hitting people under 50. The research, published in Nature Immunology, suggests that we can flip a specific protein to turn our own immune system into a more effective weapon.

At the center of this discovery is a protein called PPARD. Typically, cancer cells hijack this protein to help them burn fat for energy, which fuels their growth. Assistant Professor Semir Beyaz, who led the study, explains that cancer cells and immune cells are operating in the same "universe" and follow similar metabolic rules.

Flipping the script on cancer

When the team activated the PPARD protein specifically in immune cells, it had the opposite effect of what happens in tumors. It essentially made the immune cells "fitter" by changing how they burn fat, allowing them to better hunt and destroy cancer cells. Think of it like giving your internal defense system a major power-up.

Using CAR T cell therapy—where immune cells are engineered to attack cancer—the researchers tested this method on human colorectal cancer models, including mini-tumors grown from patient tissue. The results were impressive: the PPARD-activated cells successfully slowed or stopped tumor growth. The team also saw promising signs for breast, ovarian, and melanoma cancers.

It’s giving major Star Wars energy, as Beyaz puts it: PPARD is like "the force." In cancer cells, it’s serving the dark side, but when you switch it on in immune cells, it pivots to help destroy the disease.

Why it matters

While this is still early-stage science and hasn't been tested in humans yet, it’s a big deal. Many people struggling with these diseases run out of options when chemo or current immunotherapies fail. This research suggests a whole new strategy: improving "cell fitness" to help the body do the heavy lifting. The lab is even looking into whether this could eventually help treat conditions like endometriosis, which is lowkey a huge challenge for many people today.