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Are cancers newly evolved species?
Date:7/26/2011

an autonomous karyotype.

"You start with a chromosomal mutation, that is, aneuploidy perhaps from X-rays or cigarettes or radiation, that destabilizes and eventually changes your karyotype or renders it non-viable," he said. "The rare viable aneuploidies of cancers are, in effect, the karyotypes of new species."

Duesberg hopes that the carcinogenesis-equals-speciation theory will spur new approaches to diagnosing and treating cancer. Vincent, for example, suspects that cancers are operating right at the edge of survivability, maintaining genomic flexibility while retaining the ability to divide forever. Driving them to evolve even faster, he said, "might push them over the edge."


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Contact: Robert Sanders
rsanders@berkeley.edu
510-643-6998
University of California - Berkeley
Source:Eurekalert

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