Exosomes derived from pancreatic cancer cells induce activation and profibrogenic activities in pancreatic stellate cells

被引:93
作者
Masamune, Atsushi [1 ]
Yoshida, Naoki [1 ]
Hamada, Shin [1 ]
Takikawa, Tetsuya [1 ]
Nabeshima, Tatsuhide [1 ]
Shimosegawa, Tooru [1 ]
机构
[1] Tohoku Univ, Grad Sch Med, Div Gastroenterol, Sendai, Miyagi, Japan
关键词
Fibrosis; microRNA; Myofibroblast; Pancreatitis; Stroma; Tumor microenvironment; EXTRACELLULAR VESICLES; MICRORNA-SIGNATURE; PROLIFERATION; PROTEIN; ROLES;
D O I
10.1016/j.bbrc.2017.10.141
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Pancreatic cancer cells (PCCs) interact with pancreatic stellate cells (PSCs), which play a pivotal role in pancreatic fibrogenesis, to develop the cancer-conditioned tumor microenvironment. Exosomes are membrane-enclosed nanovesicles, and have been increasingly recognized as important mediators of cell to-cell communications. The aim of this study was to clarify the effects of PCC-derived exosomes on cell functions in PSCs. Exosomes were isolated from the conditioned medium of Panc-1 and SUIT-2 PCCs. Human primary PSCs were treated with PCC-derived exosomes. PCC-derived exosomes stimulated the proliferation, migration, activation of ERK and Akt, the mRNA expression of a-smooth muscle actin (ACTA2) and fibrosis-related genes, and procollagen type I C-peptide production in PSCs. Ingenuity pathway analysis of the microarray data identified transforming growth factor beta 1 and tumor necrosis factor as top upstream regulators. PCCs increased the expression of miR-1246 and miR-1290, abundantly contained in PCC-derived exosomes, in PSCs. Overexpression of miR-1290 induced the expression of ACTA2 and fibrosis-related genes in PSCs. In conclusion, PCC-derived exosomes stimulate activation and profibrogenic activities in PSCs. Exosome-mediated interactions between PSCs and PCCs might play a role in the development of the tumor microenvironment. (C) 2017 Elsevier Inc. All rights reserved.
引用
收藏
页码:71 / 77
页数:7
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