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2017 ; 8
(5
): e2819
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Human MSCs promotes colorectal cancer epithelial-mesenchymal transition and
progression via CCL5/?-catenin/Slug pathway
#MMPMID28542126
Chen K
; Liu Q
; Tsang LL
; Ye Q
; Chan HC
; Sun Y
; Jiang X
Cell Death Dis
2017[May]; 8
(5
): e2819
PMID28542126
show ga
Mesenchymal stem cells (MSCs) extensively interact with cancer cells and other
stroma cells in the tumor microenvironment. However, the role of MSCs in
colorectal cancer (CRC) progression and metastasis is controversial. This study
was designed to identify the role of inflammation-activated-MSCs in CRC
development. Our results show that tumor necrosis factor
(TNF)-?-preactivated-hMSCs significantly promote the progression of colon cancer
cells by enhancing cell proliferation, epithelial-mesenchymal transition,
migration, and invasion. TNF-?-primed-hMSCs secrete high level of CCL5, which
interacts with its receptor CCR1 expressed in colon cancer cells. Interestingly,
the stimulation of colon cancer cell progression by TNF-?-primed hMSCs is
associated with the upregulation of ?-catenin signaling pathway. Blocking
?-catenin pathway significantly decreases the TNF-?-primed-conditioned medium or
CCL5-mediated cancer cell progression by decreasing the enhancement of Slug,
suggesting that the CCL5/?-catenin/Slug pathway plays a critical role in
hMSC-mediated cancer progression. Furthermore, in vivo model in nude mice
confirms the ability of hMSCs to promote the proliferation and progression of
colon cancer cells, and the upregulation of CCl5/?-catenin/Slug pathway. Taken
together, the present study has demonstrated a novel pathway involving
CCl5/CCR1/?-catenin/Slug, via which hMSCs promotes CRC development.