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Objective

The aim of this study was to explore the effects of long non-coding ribonucleic acid (lncRNA) placenta-specific protein 2 (PLAC2) on the biological behaviors of gastric cancer (GC) cells by regulating the expression of c-Myc gene and its mechanism.

Patients and methods

The expression of PLAC2 in GC tissues and different GC cell lines was detected via quantitative Reverse Transcription-Polymerase Chain Reaction (qRT-PCR). The effects of PLAC2 on apoptosis and cycle, migration, and invasion of GC cells were detected using flow cytometry, wound healing assay, and transwell assay, respectively. After interference in PLAC2 expression, the changes in c-Myc expression were determined through qRT-PCR and Western blotting.

Results

The expression level of PLAC2 was downregulated in 38 out of 45 cases of GC tissues compared with that in normal gastric tissues, and it also declined in GC cells. The results of flow cytometry showed that after overexpression of PLAC2, the cell cycle was arrested in the G1/G0 phase, and the apoptosis rate was increased. The results of wound healing assay and transwell assay revealed that both migration and invasion of GC cells were inhibited. After overexpression of PLAC2, the mRNA and protein expression levels of c-Myc declined.

Conclusions

LncRNA PLAC2 affects the biological behaviors of GC cells by regulating the expression of c-Myc gene."xsd:string
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http://purl.uniprot.org/citations/33336736http://purl.uniprot.org/core/author"Wu D."xsd:string
http://purl.uniprot.org/citations/33336736http://purl.uniprot.org/core/author"Yang Y."xsd:string
http://purl.uniprot.org/citations/33336736http://purl.uniprot.org/core/author"Wu C.C."xsd:string
http://purl.uniprot.org/citations/33336736http://purl.uniprot.org/core/author"Guo W.X."xsd:string
http://purl.uniprot.org/citations/33336736http://purl.uniprot.org/core/author"Mao F.F."xsd:string
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http://purl.uniprot.org/citations/33336736http://purl.uniprot.org/core/title"Long non-coding RNA PLAC2 suppresses the survival of gastric cancer cells through down-regulating C-Myc."xsd:string
http://purl.uniprot.org/citations/33336736http://purl.uniprot.org/core/volume"24"xsd:string
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