Long non‑coding RNA FLVCR1‑AS1 promotes glioma cell proliferation and invasion by negatively regulating miR‑30b‑3p

Gao,Weida; Li,Hongbin; Liu,Yang; Zhang,Yao; Zhao,Hong; Liu,Fei

doi:10.3892/mmr.2020.11149

Long non‑coding RNA FLVCR1‑AS1 promotes glioma cell proliferation and invasion by negatively regulating miR‑30b‑3p

Authors:
- Weida Gao
- Hongbin Li
- Yang Liu
- Yao Zhang
- Hong Zhao
- Fei Liu
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Affiliations: Gamma Knife Center, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China, Department of Neurosurgery, The First Affiliated Hospital of Jiamusi University, Jiamusi, Heilongjiang 154001, P.R. China, Department of Neurosurgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China, Department of Blood Transfusion, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
Published online on: May 15, 2020 https://doi.org/10.3892/mmr.2020.11149
Pages: 723-732
Copyright: © Gao et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Glioblastoma (GBM) is the most common and malignant primary brain tumor in adults that originates from glial cells. The prognosis of patients with high‑grade glioma is poor. It is therefore crucial to develop effective therapeutic strategies. Long non‑coding RNAs (lncRNAs) have been reported as potential inducers or suppressors of tumor progression. Previous studies have indicated that the lncRNA Feline Leukemia Virus Subgroup C Cellular Receptor 1 Antisense RNA 1 (FLVCR1‑AS1) is involved in the development and progression of gastric and lung cancer, as well as hepatocellular carcinoma and cholangiocarcinoma; however, the biological effect of FLVCR1‑AS1 in glioma is not completely understood. The aim of the present study was to investigate how FLVCR1‑AS1 modulates cell proliferation and invasion in glioma. FLVCR1‑AS1 expression was significantly upregulated in GBM tissues compared with adjacent normal brain samples, and was higher in GBM cell lines compared with normal human astrocyte cells. Furthermore, the microRNA (miR)‑30b‑3p was revealed to be a putative target of FLVCR1‑AS1, and the suppressive effects of miR‑30b‑3p on cellular proliferation and invasion were reversed following FLVCR1‑AS1‑knockdown. The results from Cell Counting Kit‑8 and Transwell assays confirmed that FLVCR1‑AS1‑knockdown inhibited GBM cell proliferation and invasion ability. In addition, FLVCR1‑AS1 was found to directly interact with miR‑30b‑3p, and a rescue experiment further established that FLVCR1‑AS1 contributed to glioma progression by inhibiting miR‑30b‑3p. The results from the present study demonstrated that FLVCR1‑AS1 may serve an oncogenic role in GBM and promote disease progression by interacting with miR‑30b‑3p. These findings suggested that FLVCR1‑AS1 may be considered as a novel therapeutic target and diagnostic biomarker for GBM.

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