Many cancer treatments are notoriously savage on the body. Drugs often attack both healthy cells and tumor cells, causing a plethora of side effects.
. Healthy cells grow at a much slower pace and produce fewer of these enzymes.
With this in mind, we"masked" IL-12 with a cap that covers the part of the molecule that normally binds to immune cells to activate them. The cap is removed only when it comes into contact with enzymes found in the vicinity of tumors. When these enzymes chop off the cap, IL-12 is reactivated and spurs nearby killer T cells to attack the tumor.
When we applied these masked IL-12 molecules to both healthy and tumor tissue donated by melanoma and breast cancer patients, our results confirmed that only the tumor samples were able to remove the cap. This indicated that masked IL-12 could potentially drive a strong immune response against tumors without causing damage to healthy organs.
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