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LncRNA SNHG20 contributes to cell proliferation and invasion by upregulating ZFX expression sponging miR‐495‐3p in gastric cancer
Author(s) -
Cui Ning,
Liu Jun,
Xia Hong,
Xu Dong
Publication year - 2019
Publication title -
journal of cellular biochemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.028
H-Index - 165
eISSN - 1097-4644
pISSN - 0730-2312
DOI - 10.1002/jcb.27539
Subject(s) - gene knockdown , biology , long non coding rna , cancer research , cell growth , cancer , rna interference , gene silencing , microrna , competing endogenous rna , microbiology and biotechnology , downregulation and upregulation , rna , gene , genetics
Long noncoding RNAs (lncRNAs) exert key regulators in cancer development and progression. The functional significance of lncRNA small nucleolar RNA host gene 20 (SNHG20) was reported in gastric cancer (GC); however, the underlying molecular mechanism in GC development is largely unknown. Here, our results showed that the lncRNA SNHG20 expression was significantly higher in GC tissues compared with adjacent normal tissues by quantitative real‐time PCR (qRT‐PCR) analysis. Higher lncRNA SNHG20 expression was highly associated with tumor size and lymphatic metastasis of patients. Patients with higher lncRNA SNHG20 expression predicted a short disease‐free survival (DFS) and overall survival (OS). Furthermore, lncRNA SNHG20 expression negatively associated with miR‐495‐3p expression and regulated miR‐495‐3p expression. Function assays confirmed that lncRNA SNHG20 knockdown using RNA interference suppressed cell proliferation and invasion of GC by negatively regulating miR‐495‐3p expression. Moreover, we demonstrated that lncRNA SNHG20 inhibited zinc finger protein X‐linked (ZFX) expression by negatively miR‐495‐3p expression in GC cells. In vivo, the current study also indicated that lncRNA SNHG20 knockdown reduced the tumor growth by downregulating ZFX expression. Thus, our results implied that inhibition of SNHG20/miR‐495‐3p/ZFX axis may provide valuable target for GC treatment.