L1, a novel target of β-catenin signaling, transforms cells and is expressed at the invasive front of colon cancers

Nancy Gavert, Maralice Conacci-Sorrell, Daniela Gast, Annette Schneider, Peter Altevogt, Thomas Brabletz, Avri Ben-Ze'Ev

Research output: Contribution to journalArticlepeer-review

287 Scopus citations

Abstract

A berrant β-catenin-TCF target gene activation plays a key role in colorectal cancer, both in the initiation stage and during invasion and metastasis. We identified the neuronal cell adhesion molecule L1, as a target gene of β-catenin-TCF signaling in colorectal cancer cells. L1 expression was high in sparse cultures and coregulated with ADAM10, a metalloprotease involved in cleaving and shedding L1's extracellular domain. L1 expression conferred increased cell motility, growth in low serum, transformation and tumorigenesis, whereas its suppression in colon cancer cells decreased motility. L1 was exclusively localized in the invasive front of human colorectal tumors together with ADAM10. The transmembrane localization and shedding of L1 by metalloproteases could be useful for detection and as target for colon cancer therapy.

Original languageEnglish (US)
Pages (from-to)633-642
Number of pages10
JournalJournal of Cell Biology
Volume168
Issue number4
DOIs
StatePublished - Feb 14 2005

ASJC Scopus subject areas

  • Cell Biology

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