My laboratory utilizes quantitative mass spectrometry to study signal transduction pathways in normal and diseased cells. We are studying how perturbations in androgen receptor signaling impacts disease progression in human prostate cancer. Our long-term goals are to build quantitative models of androgen-regulated signaling pathways in prostate cancer. We will use these models to understand the evolution and progression of hormone-refractory prostate cancers. We anticipate our findings will define new biomarkers of diagnostic, prognostic, or therapeutic value to patients afflicted by life-threatening hormone-refractory prostate cancers.