Pancreatic cancer-derived exosomes promoted pancreatic stellate cells recruitment by pancreatic cancer.

Abstract:

:Cancer-associated fibroblasts (CAFs), which are an important component of the tumor microenvironment, have been identified in the blood circulation of patients with cancer metastasis, and metastatic cancer cells can recruit circulating CAFs. However, primary carcinoma sites usually regulate the behavior of metastatic cancer cells through exosomes. Here, we hypothesized that cancer-derived exosomes could enhance CAF recruitment. Exosomes secreted by pancreatic cancer cells (PANC-1 and MIA PaCa-2) were isolated and characterized. The ability of pancreatic cancer to recruit pancreatic stellate cells (PSCs) was assessed with Transwell assays in vitro and bioluminescent imaging in a mouse model in vivo, and the underlying molecular mechanism was also investigated. The results showed that pancreatic cancer cell-derived exosomes (Exo-Pan and Exo-Mia) promoted the pancreatic cancer recruitment of PSCs. This effect was mediated partially by the transfer of the exosomal protein Lin28B to the recipient cells to activate the Lin28B/let-7/HMGA2/PDGFB signaling pathway. These results suggested that exosomes derived from local cancer could promote the formation of distant metastases through transferring the exosomal protein Lin28B to the metastatic cancer cells.

journal_name

J Cancer

journal_title

Journal of Cancer

authors

Zhang YF,Zhou YZ,Zhang B,Huang SF,Li PP,He XM,Cao GD,Kang MX,Dong X,Wu YL

doi

10.7150/jca.27590

subject

Has Abstract

pub_date

2019-07-23 00:00:00

pages

4397-4407

issue

18

issn

1837-9664

pii

jcav10p4397

journal_volume

10

pub_type

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