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Oncogene. 2005 Dec 8;24(55):8200-4.

beta-Catenin regulates the expression of tenascin-C in human colorectal tumors.

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Pathologisch-Anatomisches Institut, Friedrich-Alexander-Universität Erlangen-Nürnberg, Krankenhausstr. 8-10, D-91054 Erlangen, Germany.


Tenascin-C (TN-C) is a component of the extracellular matrix (ECM). It is expressed during development and re-expressed in many types of cancers, where it is involved in the modulation of adhesion and proliferation. TN-C expression is especially high at sites of epithelial mesenchymal transition (EMT), which are found frequently at the invasion front of well-differentiated human colorectal adenocarcinomas. Tumor cells in this compartment are characterized by a strong nuclear expression of the oncogenic transcription factor beta-catenin. Here, we demonstrate that TN-C is a beta-catenin target gene in human colorectal tumors. Thus, by far the most common mutations in colorectal tumors, found in the Wnt-signaling pathway and leading to the stabilizing of beta-catenin, might influence invasion by altering adhesive properties and EMT of tumor cells.

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