Now, researchers of the Max Delbrück Center for Molecular Medicine (MDC) Berlin-Buch and Charité - University Medicine Berlin, Germany, have identified 115 genes that are disregulated both in the primary tumor and in its metastases.
The National Cancer Institute estimates that, alone in the United States, 106,100 cases of colon cancer will occur and 49,920 patients will die both from colon and rectal cancer in 2009.
Beginning in glands in the bowel lining, colorectal cancer often remains undiscovered initially. "However, the main problem is not the primary tumor," explained the surgeon and clinical researcher Dr. Johannes Fritzmann, "but the dangerous metastases."
Metastases arise when single cells break off from the primary tumor and spread to other body regions via the blood vessels or the lymphatic system. In colorectal cancer, these cells usually settle in the liver, lungs, or lymph nodes. Since the affected patient seldom feels pain or shows other symptoms, the tumor is frequently not discovered until it has already formed metastases.
To investigate which genetic mutations favor the formation of metastases, the researchers analyzed 150 tissue samples of colorectal cancer patients with and without metastases. The researchers identified 115 genes that are falsely regulated in both the primary tumors and their metastases. In this way, the researchers succeeded in identifying a genetic signature which distinguishes tumors with metastatic potential from those that do not metastasize.
Of the 115 genes the researchers identified, they focused on one gene in particular: BAMBI. They discovered that this gene is more active in metastatic tumors and metastases than in non-metastatic tumors.
"Our investigations show that the particular gene BAMBI is associated with two import signaling pathways and thus promotes metastasis formation," Dr. Fritzmann said. "These signaling pathways (Wnt and TGF-beta) are, among other things, important in the developing embryo."
In the future the researchers want to investigate the role of the other 114 genes more closely, in order to better understand the individual steps of metastasis formation.Aim - To predict at an early stage whether the tumor will spread
*A Colorectal Cancer Expression Profile that Includes Transforming Growth Factor ß Inhibitor BAMBI Predicts Metastatic Potential
Johannes Fritzmann1,2,6, Markus Morkel1,4,6, Daniel Besser1,6, Jan Budczies3, Frauke Kosel1, Felix H. Brembeck1,5, Ulrike Stein1,2, Iduna Fichtner1, Peter M. Schlag1,2 and Walter Birchmeier11Max Delbrueck Center for Molecular Medicine, 13125 Berlin, Germany
6 contributed equally.Barbara Bachtler
Barbara Bachtler | Max-Delbrück-Centrum
Decoding the genome's cryptic language
27.02.2017 | University of California - San Diego
New risk factors for anxiety disorders
24.02.2017 | Julius-Maximilians-Universität Würzburg
On January 15, 2009, Chesley B. Sullenberger was celebrated world-wide: after the two engines had failed due to bird strike, he and his flight crew succeeded after a glide flight with an Airbus A320 in ditching on the Hudson River. All 155 people on board were saved.
On January 15, 2009, Chesley B. Sullenberger was celebrated world-wide: after the two engines had failed due to bird strike, he and his flight crew succeeded...
Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...
The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.
The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...
Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...
13.02.2017 | Event News
10.02.2017 | Event News
09.02.2017 | Event News
28.02.2017 | Health and Medicine
28.02.2017 | Earth Sciences
27.02.2017 | Materials Sciences