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• W1935073111 abstract "// Lin Wang 1 , Li Lin 1 , Xi Chen 1 , Li Sun 1 , Yulin Liao 2 , Na Huang 1 , Wangjun Liao 1 1 Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, China 2 Department of Cardiology, Nanfang Hospital, Southern Medical University, Guangzhou, China Correspondence to: Wangjun Liao, e-mail: nfyyliaowj@163.com Na Huang, e-mail: lala343@126.com Keywords: metastasis-associated in colon cancer-1, TWIST1/2, vasculogenic mimicry, gastric cancer Received: December 22, 2014      Accepted: February 19, 2015      Published: March 20, 2015 ABSTRACT Vasculogenic mimicry (VM) is a blood supply modality that is strongly associated with the epithelial-mesenchymal transition (EMT), TWIST1 activation and tumor progression. We previously reported that metastasis-associated in colon cancer-1 (MACC1) induced the EMT and was associated with a poor prognosis of patients with gastric cancer (GC), but it remains unknown whether MACC1 promotes VM and regulates the TWIST signaling pathway in GC. In this study, we investigated MACC1 expression and VM by immunohistochemistry in 88 patients with stage IV GC, and also investigated the role of TWIST1 and TWIST2 in MACC1-induced VM by using nude mice with GC xenografts and GC cell lines. We found that the VM density was significantly increased in the tumors of patients who died of GC and was positively correlated with MACC1 immunoreactivity ( p < 0.05). The 3-year survival rate was only 8.6% in patients whose tumors showed double positive staining for MACC1 and VM, whereas it was 41.7% in patients whose tumors were negative for both MACC1 and VM. Moreover, nuclear expression of MACC1, TWIST1, and TWIST2 was upregulated in GC tissues compared with matched adjacent non-tumorous tissues ( p < 0.05). Overexpression of MACC1 increased TWIST1/2 expression and induced typical VM in the GC xenografts of nude mice and in GC cell lines. MACC1 enhanced TWIST1/2 promoter activity and facilitated VM, while silencing of TWIST1 or TWIST2 inhibited VM. Hepatocyte growth factor (HGF) increased the nuclear translocation of MACC1, TWIST1, and TWIST2, while a c-Met inhibitor reduced these effects. These findings indicate that MACC1 promotes VM in GC by regulating the HGF/c-Met-TWIST1/2 signaling pathway, which means that MACC1 and this pathway are potential new therapeutic targets for GC." @default.
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• W1935073111 date "2015-03-20" @default.
• W1935073111 modified "2023-09-26" @default.
• W1935073111 title "Metastasis-associated in colon cancer-1 promotes vasculogenic mimicry in gastric cancer by upregulating TWIST1/2" @default.
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• W1935073111 doi "https://doi.org/10.18632/oncotarget.3416" @default.
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