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  • Title: LncRNA SNHG3 promotes cell growth by sponging miR-196a-5p and indicates the poor survival in osteosarcoma.
    Author: Chen J, Wu Z, Zhang Y.
    Journal: Int J Immunopathol Pharmacol; 2019; 33():2058738418820743. PubMed ID: 30791797.
    Abstract:
    Abnormal expression of long noncoding RNAs (lncRNAs) is closely associated with the pathogenesis of multiple malignancies, and lncRNA small nucleolar RNA host genes (SNHGs) play critical roles in tumor progression. However, the mechanism by which SNHG3 contributes to osteosarcoma (OS) remains elusive. The association between SNHG3 expression and the clinicopathological characteristics in OS patients was analyzed using the TCGA (The Cancer Genome Atlas) dataset. Cell viability and colony number were estimated by MTT and colony formation assays. MiR-196a-5p-specific binding with SNHG3 or HOXC8 was confirmed by the luciferase report assay. As a result, the expression of SNHG3 was dramatically increased in OS tissue as compared with the adjacent normal tissues. High expression of SNHG3 was associated with tumor size and acted as an independent prognostic factor of poor survival in OS patients. Knockdown of SNHG3 inhibited cell viability and colony formation, but its overexpression reversed these effects. SNHG3 was further identified to act as a sponge of miR-196a-5p, which counteracted the tumor-promoting effects caused by SNHG3 in OS cells. The expression of miR-196a-5p had a negative correlation with SNHG3 and the poor survival in OS patients. In conclusion, lncRNA SNHG3 promoted cell growth by sponging miR-196a-5p and indicated a poor prognosis in OS patients.
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