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Cancer: 'Primitive' gene discovered
Date:2/11/2010

To find the causes for cancer, biochemists and developmental biologists at the University of Innsbruck, Austria, retraced the function of an important human cancer gene 600 million years back in time. For the first time, they have identified the oncogene myc in a fresh water polyp and they have shown that this oncogene has similar biochemical functions in ancestral metazoan and in humans. The scientists published their findings in PNAS.

The myc gene plays an important role in the growth of organisms. It produces a protein that acts as a gene regulator, which controls the expression of up to 15 % of all human genes. This means that it controls whether these genes are activated or deactivated. A deregulation of the myc gene leads to uncontrolled cell proliferation and to cancer; a deregulated myc gene occurs in about 30 % of all human cancers. "To get a better understanding of the deregulation process caused by the oncogene, we would have to know which genes are regulated by myc and which of these are important for cancers", says Klaus Bister from the Institute of Biochemistry at the University of Innsbruck. Due to the complexity of the human organism, researchers use simpler model systems for their experiments, whose results may then be translated to humans. The Innsbruck scientific teams of Klaus Bister, Markus Hartl and Bert Hobmayer have, for the first time, identified the oncogene in a fresh water polyp (Hydra) and they have shown that it has very similar functions when compared with humans.

Oncogene found in stem cells The two millimeter long Hydra were one of the first metazoans that developed on the earth about 600 million years ago and can still be found in many waters. "It is amazing that we have been able to find this oncogene in such a simple organism", says Hydra expert Hobmayer from the Institute of Zoology. "Because the gene has been conserved in evolution all the way from Hydra to humans, we are now able to a
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Contact: Klaus Bister
klaus.bister@uibk.ac.at
43-512-507-5270
University of Innsbruck
Source:Eurekalert  

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