Pancreatic cancer exosomes initiate pre-metastatic niche formation in the liver.
Nat Cell Biol
; 17(6): 816-26, 2015 Jun.
Article
en En
| MEDLINE
| ID: mdl-25985394
ABSTRACT
Pancreatic ductal adenocarcinomas (PDACs) are highly metastatic with poor prognosis, mainly due to delayed detection. We hypothesized that intercellular communication is critical for metastatic progression. Here, we show that PDAC-derived exosomes induce liver pre-metastatic niche formation in naive mice and consequently increase liver metastatic burden. Uptake of PDAC-derived exosomes by Kupffer cells caused transforming growth factor ß secretion and upregulation of fibronectin production by hepatic stellate cells. This fibrotic microenvironment enhanced recruitment of bone marrow-derived macrophages. We found that macrophage migration inhibitory factor (MIF) was highly expressed in PDAC-derived exosomes, and its blockade prevented liver pre-metastatic niche formation and metastasis. Compared with patients whose pancreatic tumours did not progress, MIF was markedly higher in exosomes from stage I PDAC patients who later developed liver metastasis. These findings suggest that exosomal MIF primes the liver for metastasis and may be a prognostic marker for the development of PDAC liver metastasis.
Texto completo:
1
Colección:
01-internacional
Asunto principal:
Neoplasias Pancreáticas
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Factores Inhibidores de la Migración de Macrófagos
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Carcinoma Ductal Pancreático
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Exosomas
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Neoplasias Hepáticas
Tipo de estudio:
Prognostic_studies
Límite:
Animals
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Female
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Humans
Idioma:
En
Revista:
Nat Cell Biol
Año:
2015
Tipo del documento:
Article
País de afiliación:
Estados Unidos