Cell growth is controlled by a complex interaction of signaling pathways, growth factors, and environmental cues. Key players include:
- Growth factors: Proteins like EGF, FGF, and IGF that bind to receptors on the cell surface, initiating a cascade of signaling events. - Cyclins and CDKs: These proteins regulate the cell cycle by forming complexes that drive the cell through different phases. - Tumor suppressors: Proteins like p53 and Rb that halt cell division if DNA damage is detected.
