Severed sea cucumber appendages don't seem to die
Organs, arms, appendages, and other complex tissues usually decay rapidly when they’re separated from their host. Over the years, biologists have seen some success with keeping them alive outside of the body—organ transplants depend on it—but it has always required germ-free environments and nutrient-rich mediums filled with growth factors. Now, though, scientists have discovered bits of tissue removed from a species of sea cucumber called Psolus fabricii can keep on living i
Researchers have discovered that detached body parts from a specific sea cucumber species, Psolus fabricii, can survive indefinitely in regular seawater. Unlike most complex tissues that quickly decay when separated from their host, these sea cucumber appendages exhibit remarkable resilience. This phenomenon is attributed to the species' adaptation to harsh environments, which has led to an extraordinary capacity for regeneration in its tube feet and tentacles. Scientists are calling this a form of naturally occurring tissue immortality, as it bypasses the need for sterile conditions and specialized nutrient solutions typically required for tissue survival outside the body.
This discovery could have significant implications for regenerative medicine and our understanding of tissue survival and regeneration.
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