Yang LY, Song GL, Zhai XQ, Wang L, Liu QL, Zhou MS. MicroRNA-331 inhibits development of gastric cancer through targeting musashi1.
World J Gastrointest Oncol 2019;
11:705-716. [PMID:
31558975 PMCID:
PMC6755110 DOI:
10.4251/wjgo.v11.i9.705]
[Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 05/23/2019] [Accepted: 07/17/2019] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND
The molecular mechanisms involved in microRNAs (miRNAs) have been extensively investigated in gastric cancer (GC). However, how miR-331 regulates GC pathogenesis remains unknown.
AIM
To illuminate the effect of miR-331 on cell metastasis and tumor growth in GC.
METHODS
The qRT-PCR, CCK8, Transwell, cell adhesion, Western blot, luciferase reporter and xenograft tumor formation assays were applied to explore the regulatory mechanism of miR-331 in GC.
RESULTS
Downregulation of miR-331 associated with poor prognosis was detected in GC. Functionally, miR-331 suppressed cell proliferation, metastasis and tumor growth in GC. Further, miR-331 was verified to directly target musashi1 (MSI1). In addition, miR-331 inversely regulated MSI1 expression in GC tissues. Furthermore, upregulation of MSI1 weakened the inhibitory effect of miR-331 in GC.
CONCLUSION
miR-331 inhibited development of GC through targeting MSI1, which may be used as an indicator for the prediction and prognosis of GC.
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