Scientists discover cells that cheat death and rebuild damaged tissue
Scientists at the Weizmann Institute have identified a molecular mechanism involving caspases that allows damaged cells to survive and regenerate tissue. While this process aids in healing, researchers warn that cancer cells may exploit this same mechanism to become more aggressive and treatment-resistant.
Why it matters
Understanding this survival mechanism could lead to new medical therapies that promote healthy tissue repair while simultaneously preventing cancer recurrence.
Scientists uncover a cellular survival mechanism that helps severely damaged tissue regenerate and may also reveal why some cancers return after treatment.
Tissues such as skin, along with the epithelial layers that cover and line many organs, have a remarkable ability to rebuild themselves after extensive damage. Scientists have known about this response, called compensatory proliferation, for roughly half a century. Yet exactly how cells manage to trigger such dramatic regrowth has remained a mystery.
The phenomenon was first documented in the 1970s, when researchers exposed fly larvae to high doses of radiation. Despite major damage to epithelial tissue, the larvae were able to regenerate fully functional wings. Similar regenerative responses have since been observed across many species, including humans.
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