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Cancer Res. 2001 Nov 15;61(22):8089-93.

Expression of the invasion factor laminin gamma2 in colorectal carcinomas is regulated by beta-catenin.

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  • 1Department of Pathology, University of Erlangen-N├╝rnberg, Krankenhausstrasse 8-10, 91054 Erlangen, Germany.


The migration-inducing gamma2 chain of laminin-5, one of the best known invasion markers, is strongly overexpressed in disseminating and infiltrating tumor cells at the invasive front of colorectal carcinomas. The same tumor cells show nuclear accumulation of the oncoprotein beta-catenin, which together with T-cell factor-DNA-binding proteins, functions as transcriptional activator of genes involved in tumor progression. Here we show that beta-catenin activates the human laminin-5 gamma2 gene through two T-cell factor-binding elements in a synergistic manner together with hepatocyte growth factor and conclude that laminin-5 gamma2 is another important target gene of nuclear beta-catenin during tumor progression.

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