Volume 55, Issue 11 pp. 1772-1785
Article

ROR1 contributes to melanoma cell growth and migration by regulating N-cadherin expression via the PI3K/Akt pathway

Natalia Brenda Fernández

Natalia Brenda Fernández

Instituto de Medicina y Biología Experimental, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina

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Daniela Lorenzo

Daniela Lorenzo

Instituto de Medicina y Biología Experimental, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina

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María Elisa Picco

María Elisa Picco

Instituto de Medicina y Biología Experimental, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina

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Gastón Barbero

Gastón Barbero

Centro de Estudios Biomédicos, Biotecnológicos, Ambientales y Diagnóstico, Universidad Maimónides, CONICET, Buenos Aires, Argentina

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Leonardo Sebastián Dergan-Dylon

Leonardo Sebastián Dergan-Dylon

Instituto de Medicina y Biología Experimental, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina

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María Paula Marks

María Paula Marks

Instituto de Medicina y Biología Experimental, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina

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Hernán García-Rivello

Hernán García-Rivello

Servicio de Anatomía Patológica, Hospital Italiano, Buenos Aires, Argentina

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Liliana Gimenez

Liliana Gimenez

Instituto de Oncología Ángel Roffo, Buenos Aires, Argentina

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Vivian Labovsky

Vivian Labovsky

Instituto de Medicina y Biología Experimental, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina

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Luca Grumolato

Luca Grumolato

INSERM U982, Institute for Research and Innovation in Biomedicine, University of Rouen, France

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Pablo Lopez-Bergami

Corresponding Author

Pablo Lopez-Bergami

Instituto de Medicina y Biología Experimental, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina

Centro de Estudios Biomédicos, Biotecnológicos, Ambientales y Diagnóstico, Universidad Maimónides, CONICET, Buenos Aires, Argentina

Correspondence to: Centro de Estudios Biomédicos, Biotecnológicos, Ambientales y Diagnóstico, Universidad Maimonides, Hidalgo 775, Buenos Aires, Argentina (1405).

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First published: 28 October 2015
Citations: 49

Abstract

The Receptor tyrosine kinase-like Orphan Receptor 1 (ROR1) is primarily expressed by neural crest cells during embryogenesis. Following a complete downregulation after birth, ROR1 was shown to re-express in various types of cancers. Little is known about ROR1 expression and function in melanoma. Here we show that ROR1 is aberrantly expressed in both melanoma cell lines and tumors and that its expression associates with poor Post-Recurrence Survival of melanoma. Using gain- and loss-of-function approaches we found that ROR1 enhances both anchorage-dependent and -independent growth of melanoma cells. In addition, ROR1 decreases cell adhesion and increases cell motility and migration. Mechanistically, ROR1 was found to induce upregulation of Akt and the mesenquimal markers N-cadherin and vimentin. The regulation of N-cadherin by ROR1 relies on both Akt dependent and independent mechanisms. ROR1 does not affect Wnt canonical pathway but was found to be engaged in a positive feedback loop with Wnt5a. In summary, we show that ROR1 contributes to melanoma progression and is a candidate biomarker of poor prognosis. Although further studies are needed to confirm this possibility, the present work indicates that ROR1 is a good prospective target for melanoma cancer therapy. © 2015 Wiley Periodicals, Inc.

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