Identification of asporin as a HER3 ligand exposes a therapeutic vulnerability in prostate cancer.

Summary: Prostate cancer can be tricky to treat when it starts to spread. Scientists recently discovered that special helper cells around the tumor release a protein called Asporin. This protein acts like a key that unlocks a specific door on the cancer cells, called HER3. When unlocked, the cancer cells get a signal to move and spread to other parts of the body.

But there is good news! Researchers tested new "smart bomb" medicines designed to specifically target these doors (known as HER2 and HER3). These medicines successfully stopped the cancer from growing and shrank the tumors, offering a promising new way to treat advanced prostate cancer.