Mesenchymal stem cells in inflammatory microenvironment potently promote metastatic growth of cholangiocarcinoma via activating Akt/NF-κB signaling by paracrine CCL5
| Autor: | Gang Song, Tianhui Hu, Yinping Tong, Jiahui Yuan, Wei Zhong, Yang Li, Shaoping Hu |
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| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
MMP2 CCL5 business.industry Mesenchymal stem cell Proinflammatory cytokine 03 medical and health sciences Paracrine signalling Chemokine receptor 030104 developmental biology 0302 clinical medicine Oncology Cell culture 030220 oncology & carcinogenesis parasitic diseases Immunology Cancer research Medicine inflammatory microenvironment cholangiocarcinoma business Protein kinase B mesenchymal stem cell Research Paper |
| Zdroj: | Oncotarget |
| ISSN: | 1949-2553 |
| Popis: | // Wei Zhong 1, 2 , Yinping Tong 1 , Yang Li 1 , Jiahui Yuan 1 , Shaoping Hu 1 , Tianhui Hu 1 and Gang Song 1 1 Cancer Research Center, Medical College of Xiamen University, Xiamen 361102, China 2 Department of General Surgery, The Affiliated Southeast Hospital of Xiamen University, Zhangzhou 363000, China Correspondence to: Gang Song, email: gangsongsd@xmu.edu.cn Keywords: cholangiocarcinoma, mesenchymal stem cell, inflammatory microenvironment, CCL5 Received: June 15, 2016 Accepted: April 18, 2017 Published: May 11, 2017 ABSTRACT Our previous work has demonstrated that mesenchymal stem cells (MSCs) could induce metastatic growth of the inflammation-related cholangiocarcinoma (CCA). However, the functional mechanism of MSCs on CCA progression in the early inflammatory microenvironment remained undetermined. Here, we showed that TNF-α and IFN-γ-induced inflammatory microenvironment stimulated the expression of TNF-α, CCL5, IL-6, IDO, and activated the NF-κB signaling with p65 nuclear translocation in MSCs cells. CCA cell lines QBC939 and Mz-chA-1 exposed to the conditioned medium of MSCs after being stimulated by TNF-α and IFN-γ (TI-CM) exhibited enhanced mobility. Moreover, MSCs pre-stimulated by both inflammatory cytokines (TI-MSCs) increased tumor metastasis in vivo . The conditioned medium of TI-MSCs stimulated the transcription of snail , slug , ZEB1 and ZEB2 . Next, the expression of CCL5 of TI-MSCs was verified by ELISA, which indicated that MSCs contributed to CCA migration and metastasis in a paracrine fashion. CCA cells treated with TI-CM up-regulated CCA chemokine receptors, especially CCR5; CCL5 neutralizing antibody or CCR5 inhibitor Maraviroc inhibited the effects of MSCs on CCA cells migration. We also found that Akt/NF-κB signaling was activated by CCL5/CCR5 axis, which increased the expression of MMP2, MMP9. Together, these findings suggest that MSCs in tumor inflammatory microenvironment are elicited of CCL5, which activate AKT/NF-κB signaling and lead to metastatic growth of CCA cells. |
| Databáze: | OpenAIRE |
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