| Summary: | Xiaoliang Chen, Pingan Song, Yuan Yao, Yang Yang Department of Thoracic Surgery, Gansu Gem Flower Hospital, Lanzhou 730060, Gansu, People’s Republic of ChinaCorrespondence: Xiaoliang Chen Department of Thoracic SurgeryGansu Gem Flower Hospital, 733 Welfare East Road, Xigu District, Lanzhou City, Gansu Province 730060, People’s Republic of ChinaTel +86-931-7995570Email xiaoying505115@163.comBackground: Non-small cell lung cancer (NSCLC) is the most common type of lung carcinoma. Long non-coding RNA (lncRNA) small nucleolar RNA host gene 14 (SNHG14) was identified to participate in tumor progression. However, the mechanism and functions of SNHG14 were rarely reported in NSCLC progression.Methods: The relative gene expression was tested by qRT-PCR. Cell viability, apoptosis, migration and invasion were measured by MTT assay, flow cytometry, and transwell migration and invasion assays, respectively. The interactions between miR-382-5p and SNHG14 or SPIN1 were predicted by starBase and confirmed by the dual-luciferase reporter assay and RNA pull-down assay. The protein level of SPIN1 was evaluated by Western blot assay.Results: The levels of SNHG14 and SPIN1 were significantly increased, while the level of miR-382-5p was apparently reduced in NSCLC tissues and cells. SNHG14 was verified to sponge miR-382-5p and SPIN1 was identified as a direct target of miR-382-5p. SNHG14 depletion repressed cell viability, migration and invasion, but induced the apoptotic rate by targeting miR-382-5p. miR-382-5p overexpression blocked cell viability, metastasis and promoted cell apoptosis by regulating SPIN1. SNHG14 silencing down-regulated SPIN1 expression by sponging miR-382-5p.Conclusion: SNHG14 facilitated NSCLC progression by regulating SPIN1 expression via targeting miR-382-5p.Keywords: lncRNA SNHG14, miR-382-5p, SPIN1, tumor progression, NSCLC
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