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PLoS By Category | Recent PLoS Articles
Oncology - Pathology - Pediatrics and Child Health

N-Cadherin in Neuroblastoma Disease: Expression and Clinical Significance
Published: Wednesday, February 15, 2012
Author: Tim Lammens et al.

by Tim Lammens, Katrien Swerts, Lara Derycke, Annemie De Craemer, Sara De Brouwer, Katleen De Preter, Nadine Van Roy, Jo Vandesompele, Frank Speleman, Jan Philippé, Yves Benoit, Klaus Beiske, Marc Bracke, Geneviève Laureys

One of the first and most important steps in the metastatic cascade is the loss of cell-cell and cell-matrix interactions. N-cadherin, a crucial mediator of homotypic and heterotypic cell-cell interactions, might play a central role in the metastasis of neuroblastoma (NB), a solid tumor of neuroectodermal origin. Using Reverse Transcription Quantitative PCR (RT-qPCR), Western blot, immunocytochemistry and Tissue MicroArrays (TMA) we demonstrate the expression of N-cadherin in neuroblastoma tumors and cell lines. All neuroblastic tumors (n?=?356) and cell lines (n?=?10) expressed various levels of the adhesion protein. The N-cadherin mRNA expression was significantly lower in tumor samples from patients suffering metastatic disease. Treatment of NB cell lines with the N-cadherin blocking peptide ADH-1 (Exherin, Adherex Technologies Inc.), strongly inhibited tumor cell proliferation in vitro by inducing apoptosis. Our results suggest that N-cadherin signaling may play a role in neuroblastoma disease, marking involvement of metastasis and determining neuroblastoma cell viability.
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