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Dormant stem cells for emergencies
Date:12/4/2008

lls for the first time and, thus, to treat the disease much more effectively by destroying the supply basis."

In a second article*, Dr. Elisa Laurenti from Trumpp's team shows that the two cancer genes c-Myc and N-Myc play a vital role in the functioning of stem cells. The two genes provide the blueprints for what are called transcription factors, which in turn regulate the activity of other genes and are overactive particularly in cancer cells. If both c-Myc and N-Myc are switched off at the same time in mice, the animals quickly start suffering from a general lack of blood cells and quickly die.

The two genes are not only responsible for survival of nearly all blood cells, but they also jointly control the two prime characteristics of stem cells the capability of self-renewal and the potential to produce differentiated blood cells. This result is not only relevant for our understanding of stem cells, but it also explains the damage that can be caused by overactive Myc genes. Trumpp explains: "In tumors, too, c-Myc and N-Myc are presumably responsible for the self-renewal of cancer stem cells and, thus, for uncontrolled growth."


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Contact: Dr. Sibylle Kohlstaedt
s.kohlstaedt@dkfz.de
Helmholtz Association of German Research Centres
Source:Eurekalert

Page: 1 2 3

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