Prostate cancer is the second leading cause of cancer death in men. While curable if discovered early, many men are diagnosed after the disease has metastasized (spread) to other parts of the body. At this point few treatments are effective. Androgens (male sex hormones) regulate prostate growth and development. Removing androgens is the most effective treatment for advanced prostate cancer. However, some cancer cells eventually adapt and become androgen-independent, enabling the disease to progress. The YB-1 protein regulates two genes involved in the progression of androgen independence. Using sophisticated DNA microarray technology, Dr. Susan Moore aims to identify additional genes regulated by this protein to learn how androgen independence develops. The findings could lead to earlier diagnosis and new treatments for prostate cancer.