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The aim of the present study was to elucidate whether the long non-coding RNA (lncRNA) HIT000218960 could accelerate the proliferative and migratory ability of gastric cancer (GC) cells by regulating high-mobility group AT-hook 2 (HMGA2) gene. The reverse transcription-quantitative polymerase chain reaction was used to determine HIT000218960 and HMGA2 expression levels in GC tissues and cells. The HMGA2 protein level was detected by western blotting. A χ test was used to determine the association between the HIT000218960 expression level and the clinical characteristics of patients with GC. GC cells were transfected with small interfering (si)-negative control, si-HIT000218960 and si-HIT000218960+pcDNA-HMGA2, prior to assessing the cell proliferative and migratory ability using the Cell Counting Kit-8 and Transwell assays, respectively. HIT000218960 and HMGA2 were highly expressed in GC tissues compared with in healthy tissues. In addition, HIT000218960 and HMGA2 were positively correlated in GC tissues. The HIT000218960 expression level was associated with tumor size, Tumor-Node-Metastasis staging and lymph node metastasis in patients with GC. HIT000218960 silencing decreased the proliferative and migratory ability of HGC27 and NCI-N87 cells; however, HMGA2 overexpression partly reversed this inhibitory effect. The results of the present study indicated that HIT000218960 could promote HGC27 and NCI-N87 cell proliferation and migration, which may be mediated by HMGA2.

HIT000218960 promotes gastric cancer cell proliferation and migration through upregulation of HMGA2 expression