Cytoskeleton-centric protein transportation by exosomes transforms tumor-favorable macrophages

The exosome is a key initiator of pre-metastatic niche in numerous cancers, where macrophages serve as primary inducers of tumor microenvironment. However, the proteome that can be exosomally transported from cancer cells to macrophages has not been sufficiently characterized so far. Here, we used c...

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Veröffentlicht in:Oncotarget 2016-10, Vol.7 (41), p.67387-67402
Hauptverfasser: Chen, Zhipeng, Yang, Lijuan, Cui, Yizhi, Zhou, Yanlong, Yin, Xingfeng, Guo, Jiahui, Zhang, Gong, Wang, Tong, He, Qing-Yu
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container_end_page 67402
container_issue 41
container_start_page 67387
container_title Oncotarget
container_volume 7
creator Chen, Zhipeng
Yang, Lijuan
Cui, Yizhi
Zhou, Yanlong
Yin, Xingfeng
Guo, Jiahui
Zhang, Gong
Wang, Tong
He, Qing-Yu
description The exosome is a key initiator of pre-metastatic niche in numerous cancers, where macrophages serve as primary inducers of tumor microenvironment. However, the proteome that can be exosomally transported from cancer cells to macrophages has not been sufficiently characterized so far. Here, we used colorectal cancer (CRC) exosomes to educate tumor-favorable macrophages. With a SILAC-based mass spectrometry strategy, we successfully traced the proteome transported from CRC exosomes to macrophages. Such a proteome primarily focused on promoting cytoskeleton rearrangement, which was biologically validated with multiple cell lines. We reproduced the exosomal transportation of functional vimentin as a proof-of-concept example. In addition, we found that some CRC exosomes could be recognized by macrophages via Fc receptors. Therefore, we revealed the active and necessary role of exosomes secreted from CRC cells to transform cancer-favorable macrophages, with the cytoskeleton-centric proteins serving as the top functional unit.
doi_str_mv 10.18632/oncotarget.11794
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subjects Animals
Cell Line, Tumor
Colorectal Neoplasms - metabolism
Colorectal Neoplasms - pathology
Cytoskeleton - metabolism
Cytoskeleton - pathology
Exosomes - metabolism
Exosomes - pathology
Heterografts
Humans
Macrophages - metabolism
Macrophages - pathology
Mice
Mice, Inbred BALB C
Protein Transport
Research Paper
Tumor Microenvironment - physiology
title Cytoskeleton-centric protein transportation by exosomes transforms tumor-favorable macrophages
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