Stem cell-like transcriptional reprogramming mediates metastatic resistance to mTOR inhibition.
Oncogene
; 36(19): 2737-2749, 2017 05 11.
Article
en En
| MEDLINE
| ID: mdl-27991928
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.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Factores de Transcripción
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Proto-Oncogenes
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Neoplasias de la Mama
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Proteínas de Unión al ADN
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Factor de Transcripción SOX9
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Serina-Treonina Quinasas TOR
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Neoplasias Pulmonares
Tipo de estudio:
Prognostic_studies
Límite:
Adult
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Aged
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Female
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Humans
/
Middle aged
Idioma:
En
Revista:
Oncogene
Asunto de la revista:
BIOLOGIA MOLECULAR
/
NEOPLASIAS
Año:
2017
Tipo del documento:
Article
País de afiliación:
España
Pais de publicación:
Reino Unido