WNT proteins are a group of signaling molecules that play a crucial role in cell communication and development. They are involved in various biological processes, including cell growth, differentiation, and tissue regeneration. WNT proteins bind to specific receptors on the surface of cells, triggering a cascade of events that influence gene expression and cellular behavior. These proteins are essential for embryonic development and are also important in maintaining the health of adult tissues. Dysregulation of WNT signaling has been linked to several diseases, including cancer, making them a significant focus of research in molecular biology and medicine.