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Cellular decision on the computer
Date:7/14/2008

Scientists of the Division of Theoretical Bioinformatics at the German Cancer Research Center (Deutsches Krebsforschungszentrum, DKFZ) in Heidelberg have simulated on the computer how cells decide whether or not to migrate. Using their results, the researchers were able to predict the molecular targets within a cell that have to be hit so that its behavior changes in a particular direction. This method may help to develop new treatments against cancer metastasis. The scientists have published their results in the latest issue of Molecular Systems Biology.

One hundred and thirty years ago, Paul Ehrlich, pioneer of chemotherapy, speculated that when a cell gets sick, this is caused by a molecular change that has taken place inside the cell. Ehrlich surmised that if one could specifically hit this place of change, i.e. the "molecular target", then the disease could be cured.

When it comes to cancer, this concept has only limited applicability, because tumor cells are altered in many places. For cancer treatment to be successful, it needs to hit several molecular targets and in a specific order, too. However, with the number of targets growing, the number of possible combinations of hits increases exponentially. If one aims to influence the genetic activity of a cell, there are several thousand targets to choose from. In this case it is impossible to test all possible combinations experimentally in order to find an efficient therapy. In this area, biologists and medical researchers are seeking help from mathematicians or physicists. They provide computer models that simulate a cell's behavior and, thus, make "testing" possible at all. This new research field is called systems biology.

In an interdisciplinary collaboration, research groups at DKFZ have now succeeded in elucidating the process underlying a cell's decision about how it is going to behave. Scientists in the teams of biologist Dr. Axel Szabowski, physicist Dr. Hauke Busch
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Contact: Dr. Stefanie Seltmann
s.seltmann@dkfz.de
49-622-142-2854
Helmholtz Association of German Research Centres
Source:Eurekalert

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