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JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
Long noncoding RNA SNHG7 promotes the progression and growth of glioblastoma via inhibition of miR-5095.
Biochemical and Biophysical Research Communications 2018 Februrary 6
The long non-coding RNA SNHG7 (small nucleolar RNA host gene 7) has been reported to be involved in various cancers as a potential oncogene. However, the functions and molecular mechanisms of SNHG7 in glioblastoma (GBM) are largely unknown. In the present study, we showed that the expression of SNHG7 was significantly upregulated in GBM tissues and cell lines compared with non-cancerous brain tissues. Furthermore, we found that SNHG7 knockdown remarkably suppressed the proliferation, migration and invasion of A172 and U87 cells while inducing their apoptosis. Subsequently, we showed that SNHG7 knockdown significantly inhibited tumor growth and metastasis in vivo by using xenograft experiments in nude mice. In terms of mechanism, we found that SNHG7 directly inhibited miR-5095, which targeted the 3' UTR of CTNNB1 mRNA and subsequently downregulated the Wnt/β-catenin signaling pathway in GBM. Using rescue experiments, we demonstrated that SNHG7 promoted the proliferation, migration and invasion of GBM cells through the inhibition of miR-5095 and concomitant activation of Wnt/β-catenin signaling pathway. Taken together, the SNHG7/miR-5095 axis might be a potential target for the development of effective GBM therapy.
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