期刊
TUMOR BIOLOGY
卷 39, 期 7, 页码 -出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/1010428317711312
关键词
Gastric cancer; miR-143; DNMT3A; cell proliferation; cell invasion
类别
Increasing evidence has suggested that MircroRNAs (miRNAs) dysregulated in pathogenesis and tumorigenicity in human cancers including gastric cancer (GC). MiR-143 had been reported to function as tumor suppressor in GC progression, however, the underlying function of miR-143 in GC still need to be well known. In the study, we revealed that miR-143 was significantly down-regulated in GC cell lines. Upregulation of miR-143 inhibited cell proliferation, invasion, S phase cell proportion and cell cycle related protein levels of Cyclin D1, CDK4 and CDK6 in GC. Furthermore, luciferase reporter assays demonstrated that DNMT3A was a direct target of miR-143 and Upregulation of miR-143 inhibited the DNMT3A mRNA and protein expression levels in GC cells. Moreover, we demonstrated that DNMT3A knockdown rescued the promoting effect of miR-143 inhibitor on cell proliferation in GC. Thus, these results demonstrated that miR-143 targeted DNMT3A in GC cells and inhibit GC tumorigenesis and progression, which may provide a novel therapeutic target of GC.
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