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Stem cell-like transcriptional reprogramming mediates metastatic resistance to mTOR inhibition

Francesca Mateo, E.J. Arenas, Helena Aguilar, Jordi Serra-Musach, Gorka Ruiz de Garibay, Jacopo Boni, M. Maicas, S. Du, F. Iorio, Carmen Herranz-Ors, A. Islam, X. Prado, A. Llorente, Anna Petit Montserrat, August Vidal, Isabel Català, Teresa Soler, G. Venturas, A. Rojo-Sebastian, H. SerraDaniel Cuadras, I. Blanco, J. Lozano, Francesc Canals, A.M. Sieuwerts, V. De Weerd, M.P. Look, Sara Puertas, N. García, A.S. Perkins, Nuria Bonifaci, M. Skowron, Laia Gómez-Baldó, V. Hernández, Antonio Martínez-Aranda, Maria Martínez-Iniesta, Xènia Serrat Farran, Julián Cerón, J. Brunet, M.P. Barretina, Mercedes Gil, Catalina Falo, A. Fernández, I. Morilla, Sonia Pernas, M.J. Plà, Xavier Andreu, Miquel Angel Segui Palmer, Rosa Ballester, Eva Castellà Fernández, M. Nellist, S. Morales, J. Valls, A. Velasco, X. Matias-Guiu, Agnes Figueras, José Vicente Sánchez-Mut, Montse Sanchez-Cespedes, Alex Cordero Casanovas, Jorge Gómez-Miragaya, Luis Palomero, A.  Gómez, T.F. Gajewski, E.E.W. Cohen, M. Jesiotr, L. Bodnar, M. Quintela-Fandino, N. López-Bigas, Rafael Valdés-Mas, X.S. Puente, Francesc Viñals, O. Casanovas, M. Graupera, Javier Hernandez-Losa, Santiago Ramón y Cajal, L. García-Alonso, J. Saez-Rodriguez, M. Esteller, A. Sierra, N. Martín-Martín, A. Matheu, A. Carracedo, Eva González-Suárez, M. Nanjundan, Javier Cortés, Conxi Lazaro Garcia, M.D. Odero, J.W.M. Martens, G. Moreno-Bueno, M.H. Barcellos-Hoff, Alberto Villanueva, R.R. Gomis, Miguel Ángel Genestar Pujana

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Resum

Inhibitors of the mechanistic target of rapamycin (mTOR) are currently used to treat advanced metastatic breast cancer. However, whether an aggressive phenotype is sustained through adaptation or resistance to mTOR inhibition remains unknown. Here, complementary studies in human tumors, cancer models and cell lines reveal transcriptional reprogramming that supports metastasis in response to mTOR inhibition. This cancer feature is driven by EVI1 and SOX9. EVI1 functionally cooperates with and positively regulates SOX9, and promotes the transcriptional upregulation of key mTOR pathway components (REHB and RAPTOR) and of lung metastasis mediators (FSCN1 and SPARC). The expression of EVI1 and SOX9 is associated with stem cell-like and metastasis signatures, and their depletion impairs the metastatic potential of breast cancer cells. These results establish the mechanistic link between resistance to mTOR inhibition and cancer metastatic potential, thus enhancing our understanding of mTOR targeting failure.
Idioma originalAnglès
Pàgines (de-a)2737-2749
Nombre de pàgines13
RevistaOncogene
Volum36
Número19
DOIs
Estat de la publicacióPublicada - 2017

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