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VE-cadherin RGD motifs promote metastasis and constitute a potential therapeutic target in melanoma and breast cancers

AutorBartolomé, Rubén Álvaro ; Torres, Sofía ; Isern de Val, Soledad; Escudero-Paniagua, B. ; Calviño, Eva ; Teixidó, Joaquín ; Casal, J. Ignacio
Palabras claveVE-cadherin
RGD motif
Breast cancer
Fecha de publicación9-dic-2016
EditorImpact Journals
CitaciónOncotarget 8 (1) 215-227 (2017)
ResumenWe have investigated the role of vascular-endothelial (VE)-cadherin in melanoma and breast cancer metastasis. We found that VE-cadherin is expressed in highly aggressive melanoma and breast cancer cell lines. Remarkably, inactivation of VEcadherin triggered a significant loss of malignant traits (proliferation, adhesion, invasion and transendothelial migration) in melanoma and breast cancer cells. These effects, except transendothelial migration, were induced by the VE-cadherin RGD motifs. Co-immunoprecipitation experiments demonstrated an interaction between VE-cadherin and α2β1 integrin, with the RGD motifs found to directly affect β1 integrin activation. VE-cadherin-mediated integrin signaling occurred through specific activation of SRC, ERK and JNK, including AKT in melanoma. Knocking down VEcadherin suppressed lung colonization capacity of melanoma or breast cancer cells inoculated in mice, while pre-incubation with VE-cadherin RGD peptides promoted lung metastasis for both cancer types. Finally, an in silico study revealed the association of high VE-cadherin expression with poor survival in a subset of melanoma patients and breast cancer patients showing low CD34 expression. These findings support a general role for VE-cadherin and other RGD cadherins as critical regulators of lung and liver metastasis in multiple solid tumours. These results pave the way for cadherin-specific RGD targeted therapies to control disseminated metastasis in multiple cancers.
Descripción13 p.-6 fig.
Versión del editorhttp://dx.doi.org/10.18632/oncotarget.13832
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