AAAS

p53 Loss Reveals a Clonal Expansion Pathway That Could Reshape Cancer Biology

A new study reported in Science shows that losing the tumor suppressor p53 can create a signaling gradient that helps mutant epithelial cells spread through otherwise normal tissue. The finding sharpens understanding of how early cancerous clones gain a foothold, with implications for prevention, early detection, and the design of therapies that target the tissue environment as well as the mutation itself.