MAPK/ERK pathway

The MAPK/ERK pathway is a crucial signaling pathway in cells that helps control various functions, including growth, division, and response to external signals. When a cell receives a signal, a cascade of proteins is activated in a specific sequence—like a relay race—culminating in the activation of the ERK protein. Once active, ERK moves into the nucleus and affects gene expression, influencing how the cell behaves. This pathway plays a significant role in development, immunity, and even cancer, as it can lead to uncontrolled cell growth if dysregulated. Understanding it helps researchers develop targeted therapies.