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Cell Biology
Stem cells' repair skills might be linked to cancer
December 14th, 2004
Johns Hopkins researchers say there is growing evidence that stem cells gone awry in their efforts to repair tissue damage could help explain why long-term irritation, such as from alcohol or heartburn, can create a breeding ground for certain cancers. At the heart of their argument, outlined in Nature, are two key chemical signals, called Hedgehog and Wnt ("wint"), that are active in the stem cells that repair damaged tissue. Recently and unexpectedly, the signals also have been found in certain hard-to-treat cancers, supporting an old idea that some cancers may start from normal stem cells that have somehow gone bad. Over the last 10 years,...
Source: cancer weekly (2004-12-14)
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