Transcriptomics

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LncRNA SNHG17 contributes to proliferation, migration and poor prognosis of hepatocellular carcinoma


ABSTRACT: Long noncoding RNAs (lncRNAs) have been substantially reported to have critical roles in regulating tumorigenesis recent years. However, the expression pattern and biological function of SNHG17 in hepatocellular carcinoma (HCC) remain unclearly. Bioinformatics analysis and qRT-PCR were performed to detect the expression pattern of SNHG17 in HCC tissues, adjacent non-tumorous tissues and cell lines. The effect of SNHG17 on proliferation, migration and apoptosis of HCC were investigated by knockdown and overexpressing SNHG17 in HCC cell lines. RNA sequencing was utilized to explore the underlying mechanism. Utilizing publicly available TCGA-LIHC, GSE102079 HCC datasets and qRT-PCR, we found SNHG17 was significantly upregulated in HCC tissues and cell lines and was notably associated with larger tumor size, poorly differentiation, presence of vascular invasion and advanced TNM stage. Furthermore, gain- and loss-of-function studies demonstrated that SNHG17 promoted cell proliferation, migration and inhibited apoptosis of HCC. By employing RNA sequencing, we found knockdown of SNHG17 caused 1037 differentially expressed genes, highly enriched in several pathways, including metabolic, PI3K-Akt, cell adhesion, regulation of cell proliferation and apoptotic pathway, among them 92 were overlapped with SNHG17-related genes in TCGA-LIHC dataset. Furthermore, ERH, TBCA, TDO2 and PDK4 were successfully validated and found significantly dysregulated in HCC tissues. Moreover, HCC patients with higher SNHG17 expression had a relatively poor overall survival and disease-free survival and ERH, PDK4 also played markedly role in prognosis of HCC. Broadly, our findings illustrate that SNHG17 acts as a noncoding oncogene in HCC progression, suggesting its potential value as a novel target for HCC therapy.

ORGANISM(S): Homo sapiens

PROVIDER: GSE152256 | GEO | 2021/09/12

REPOSITORIES: GEO

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