Scientists have found a new way to make natural killer (NK) cells stronger. NK cells are part of the body’s first line of defense against disease.
At McGill University, researchers blocked two proteins to help NK cells attack cancer better. In lab tests, the boosted cells killed cancer cells from leukemia, brain cancer, kidney cancer, and triple‑negative breast cancer. In animals, tumors grew much slower.
Temporary Boost, No Permanent Changes
Many current cancer treatments change a cell’s DNA permanently. Those changes can be hard to undo if something goes wrong.
The new method uses small‑molecule drugs that give NK cells a short‑term boost. Because the effect is reversible, the treatment may be safer and easier to control.
Ready‑to‑Use Cells Save Time and Money
The NK cells came from donated umbilical‑cord blood. Scientists grew and stored them so they could be used for many patients.
This is different from therapies that need a patient’s own cells to be collected and altered, which can take weeks and cost a lot.
“These NK cells can be ready right away,” the team said. “That could make immunotherapy faster, safer, and cheaper.”
Looking Ahead to Human Trials
The researchers hope to test the therapy in people soon. One early target could be acute myeloid leukemia, a fast‑growing blood cancer with few treatment options.
Trials will need funding and approval before they can start.
Study Information
The work was published in EMBO Reports in April 2026. It was funded by several Canadian health and research foundations.