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Why do some cancers come back? Mouse studies support idea of hidden 'seeds' for tumour growth

Published on August 1, 2012; Published on August 1, 2012

Topics :: NEW YORK, N.Y.

NEW YORK, N.Y. - Scientists have found new evidence for a theory about why some cancers return after they've seemingly been wiped out. Three studies in mice say tumors contain a pool of cancer stem cells that can multiply and seed the tumour's regrowth.

If that's true, scientists will need to find a way to kill those stem cells, in addition to how they attack the rest of the tumour.

Researchers have been finding signs of this stem cell idea for about a decade. The new studies by three teams of scientists take a different approach in analyzing tumors of the brain, skin and colon in mice. The work was published online Wednesday by the journals Nature and Science.

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