Actin dynamics refers to the constant and coordinated movements and reorganization of actin filaments within cells. Actin is a protein that plays a critical role in cellular processes such as cell division, cell motility, and intracellular transport. Actin dynamics involve the assembly and disassembly of actin filaments, as well as their organization into complex structures such as stress fibers, lamellipodia, and filopodia. Proper actin dynamics are essential for various cellular functions, and defects in actin dynamics can lead to diseases such as cancer, autoimmune disorders, and neurological disorders. Researchers study actin dynamics to better understand how cells move, change shape, and communicate with one another, with the ultimate goal of developing treatments for diseases associated with dysregulated actin dynamics.