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TRIM37 promotes cell invasion and metastasis by regulating SIP1-mediated epithelial–mesenchymal transition in gastric cancer

Authors Chen D, You X, Pan Y, Liu Q, Cao G

Received 27 June 2018

Accepted for publication 10 October 2018

Published 10 December 2018 Volume 2018:11 Pages 8803—8813

DOI https://doi.org/10.2147/OTT.S178446

Checked for plagiarism Yes

Review by Single-blind

Peer reviewers approved by Dr Amy Norman

Peer reviewer comments 2

Editor who approved publication: Dr Yao Dai


Dehu Chen, Xiaolan You, Yan Pan, Qinghong Liu, Gan Cao

Department of General Surgery, Taizhou People’s Hospital, The Fifth Affiliated Hospital of Nantong University, Taizhou, Jiangsu Province, People’s Republic of China

Background: Tripartite motif containing 37 (TRIM37) has been demonstrated to function importantly during the progression of various cancers. However, the role of TRIM37 in gastric cancer (GC) remains elusive.
Materials and methods: TRIM37 mRNA and protein expressions were determined by qRT-PCR, Western blot, and immunohistochemical staining in GC specimens. The effects of TRIM37 on GC cells behavior were evaluated by transwell assays in vitro and metastasis assay in vivo, respectively. Besides, qRT-PCR, Western blot, and immunofluorescence staining were employed to detect the expressions of TRIM37 and epithelial–mesenchymal transition (EMT)-related markers.
Results: The present study revealed that TRIM37 mRNA or protein expression was significantly increased in GC tissues compared with that in paracancerous control tissues, and its aberrant overexpression was closely associated with clinical metastasis and poor prognosis in patients with GC. TRIM37 knockdown significantly suppressed GC cells migration and invasion in vitro, as well as metastasis in vivo. Inversely, TRIM37 overexpression exerted the opposite effects. Mechanistic studies suggested that SIP1-mediated EMT might be responsible for TRIM37-facilitated GC cells migration and invasion.
Conclusion:
Our findings revealed that high TRIM37 expression was associated with clinical metastasis and poor survival in patients with GC. TRIM37 promoted GC cells migration and invasion via EMT, mediated by the transcription factor SIP1, thus providing a candidate target for GC treatment.

Keywords: tripartite motif containing 37, gastric cancer, epithelial–mesenchymal transition

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