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Silence of Long Noncoding RNA NEAT1 Inhibits Malignant Biological Behaviors and Chemotherapy Resistance in Gastric Cancer.
Pathology Oncology Research : POR 2018 January
Gastric cancer (GC) is the most common solid tumor in digestive system. Nuclear-enriched abundant transcript 1 (NEAT1) gene is a lncRNA, and reveal potential oncogene role in several malignant tumors. The aim of this study is to investigate the expression and clinical significance of Nuclear Paraspeckle Assembly Transcript 1 (NEAT1) gene and its influence to malignant biologic behaviors and chemotherapy resistance to adriamycin in GC. This study found NEAT1 was up-regulated in GC tissues and cells, especially in in GC adriamycin-resistant cells. NEAT1 silence in SGC7901 cells could inhibit proliferation and invasion ability, and promote cell apoptosis significantly. NEAT1 silence in adriamycin-resistant SGC7901/ADR cells also depressed the half maximal inhibitory concentration (IC50) for adriamycin, chemotherapy resistance to adriamycin was inhibited significantly. NEAT1 knockdown promoted apoptosis in SGC7901/ADR cells induced by adriamycin. In summary, lncRNA NEAT1 is high-expressed in GC and functions as an oncogene to modulate apoptosis, invasion, proliferation and chemotherapy resistance of GC cells, which might be a novel potential therapeutic target for GC.
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