A Flatworm Cell That Detonates Like a Bomb, Kills Dozens of Neighbors, Then Vanishes in Five Minutes
Researchers at Stanford have identified a unique flatworm cell type called a 'ruptoblast' that self-destructs rapidly to eliminate nearby threats. This process, termed 'ruptosis,' occurs in seconds and is distinct from slower cell death mechanisms found in other organisms.
Why it matters
Understanding this rapid biological defense mechanism could provide new insights into cellular biology and potential medical applications.
Chew Chai, a postdoctoral researcher at Stanford, was watching flatworm cells respond to a hormone when a subset of them did something no one had described. Under live microscopy, they burst open, released contents that killed everything nearby, and disappeared entirely within five minutes.She and senior author Bo Wang named the cells ruptoblasts and the process ruptosis. Their findings appeared in Cell on June 2 and recirculated widely in early August."We never expected that a cell could just explode like a bomb," said Wang, an associate professor of bioengineering, in the Stanford announcement.Speed Is What Makes It DifferentCell death that serves a defensive purpose is not new. Cells routinely self-destruct to contain infection or eliminate damage, and several such pathways are well characterized.What separates ruptosis is the timescale.
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