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Article type: Research Article
Authors: Lian, Dongbo* | Amin, Buhe | Du, Dexiao | Yan, Wei
Affiliations: Department of General Surgery, Beijing Shijitan Hospital of Capital Medical University, Beijing 100038, China
Correspondence: [*] Corresponding author: Dongbo Lian, Department of General Surgery, Beijing Shijitan Hospital of Capital Medical University, No.10, Tieyi Road, Haidian District, Beijing 100038, China. Tel.: +86 010 63925588; E-mail: samliandongbo@126.com.
Abstract: This paper aimed to probe into the expression of long non-coding RNA (lncRNA) SNHG16 in human gastric cancer (GC) and its potential tumor biological functions. The expression of lncRNA SNHG16 was detected in GC and adjacent tissues and GC cell lines using qRT-PCR. GC MGC-803 cells were transfected with siRNA of lncRNA SNHG16, as well as blank and negative control. A series of experiments including CCK-8, flow cytometry, transwell, and wound healing assay were adopted to evaluate the effects of lncRNA SNHG16 on cell growth and metastasis. Besides, the nude mouse xenograft tumor model was established to draw tumor growth curve and measure tumor volume during treatments. TUNEL staining was used to determine the apoptosis rate of tissues. The expression of lncRNA SNHG16 in GC tissue, significantly associated with invasion depth, lymph node metastasis, TNM stage and histological differentiation (all P< 0.05), was upregulated compared with adjacent tissues. Transfected with siRNA of lncRNA SNHG16 inhibited GC MGC-803 cell proliferation, and arrested cells in the G0/G1 phase, and then promoted apoptosis rate with reduced cell invasion and shortened migration distance. Additionally, the nude mice xenograft presented lower tumor growth rate and weight loss alongside elevated apoptosis rate of tumor tissues. LncRNA SNHG16 is highly expressed in GC, while suppression of SNHG16 expression can inhibit proliferation, weaken invasion and migration of GC cells, and enhance apoptosis, to be a novel target for GC clinical treatment.
Keywords: Long non-coding RNA SNHG16, gastric cancer, clinicopathological features, proliferation, migration, invasion, apoptosis, cell cycle
DOI: 10.3233/CBM-170462
Journal: Cancer Biomarkers, vol. 21, no. 1, pp. 151-160, 2018
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