Phosphatidylinositol 3-kinase (PI3K)

Phosphatidylinositol 3-kinase (PI3K) is an enzyme involved in cellular signaling, playing a key role in regulating cell growth, survival, and metabolism. It is activated when signals from outside the cell, like growth factors, bind to receptors on the cell surface. Once activated, PI3K helps produce specific molecules that send internal messages, instructing the cell to grow, divide, or survive. Because of its central role in cell function, abnormal PI3K activity is linked to various diseases, including cancer, making it an important target for medical research and drug development.