Abstract
To investigate whether lncRNA (long non-coding RNA) SNHG15 could regulate the proliferation and migration of lung cancer via microRNA-211-3p and its underlying mechanism. SNHG15 expression in 55 LC (lung cancer) tissues and 30 normal lung tissues was detected by qRT-PCR (quantitative Real Time-Polymerase Chain Reaction). The relationship between SNHG15 expression and pathological characteristics of LC patients was analyzed the by Kaplan-Meier method. The target microRNA of SNHG15 was predicted by bioinformatics and verified by dual-luciferase reporter gene assay. Viability, cell cycle and migration of LC cells after altering expressions of SNHG15 or microRNA-211-3p were detected by cell counting kit-8 (CCK-8), flow cytometry and transwell assay, respectively. SNHG15 was highly expressed in LC tissues than that of normal lung tissues. Besides, LC patients with stage I-II presented lower expression of SNHG15 than those with stage III-IV. SNHG15 expression was correlated to tumor size, TNM stage, and lymph node metastasis, whereas not correlated to age and sex of LC patients. For in vitro studies, SNHG15 knockdown resulted in viability reduction, cell cycle arrest and reduced migration of LC cells, which were reversed by the microRNA-211-3p knockdown. SNHG15 is highly expressed in LC tissues, which promotes the occurrence and progression of LC via regulating proliferation and migration of LC cells by targeting microRNA-211-3p.
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