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Articles

TRIM2 is a novel promoter of human colorectal cancer

, , , , , , , & show all
Pages 210-218 | Received 12 Oct 2018, Accepted 19 Jan 2019, Published online: 27 Mar 2019
 

Abstract

Objectives: The incidence of colorectal cancer (CRC) is increasing year by year and appears to be younger, due to the low early diagnosis rate and metastasis. It is difficult to remedy by conventional treatment. Here, we reported that tripartite motif containing protein 2 (TRIM2) could promote tumor growth, invasion and metastasis of CRC via a mechanism that involved EMT both in vitro and in vivo.

Methods: First, we used immunohistochemistry to detect TRIM2 expression. Next, TCGA database was applied to the coorelation between TRIM2 and CRC progression. Then, the plasmids and lentivirus particles were used to manipulate TRIM2 expression in SW620 or HT29 cells. The assays of proliferation, adhesion, magration and invasion were employed to detect the migration and invasion ability of CRC cells. Finally, a tail injection of CRC cells was used to identify the role of TRIM2 in tumor metastasis.

Results: TRIM2 expression was significantly higher in CRC tissues than in non-cancerous tissues and was significantly associated with some clinicopathological factors. Forced overexpression of TRIM2 promoted CRC cell proliferation, migration and invasion in vitro, while opposing results were observed when TRIM2 was depleted by short hairpin RNA. TRIM2 expression had reversely correlated with YAP signaling, which was a novel pathway way referred to tumorigenesis. Furthermore, animal metastasis models confirmed that the in vivo results were consistent with the outcomes in vitro. TRIM2 conducts its function during CRC cell metastasis by epithelial–mesenchymal transition (EMT). These results indicate that TRIM2 is a novel promoter of human colorectal cancer.

Disclosure statement

No potential conflict of interest was reported by the authors.

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