Circular RNA hsa_circ_0008344 regulates glioblastoma cell proliferation, migration, invasion, and apoptosis. Issue 7 (24th April 2018) - Zhou, Jinxu
Abstract : Background: Recent studies have found circular RNAs (circRNAs) involved in the biological process of cancers. However, little is known about their functional roles in glioblastoma. Methods: Human circRNA microarray analysis was performed to screen the expression profile of circRNAs in IDH1 wild‐type glioblastoma tissue. The expression of hsa_circ_0008344 in glioblastoma and normal brain samples was quantified by qRT‐PCR. Functional experiments were performed to investigate the biological functions of hsa_circ_0008344, including MTT assay, colony formation assay, transwell assay, and cell apoptosis assay. Results: CircRNA microarray revealed a total of 417 abnormally expressed circRNAs (>1.5‐fold, P < .05) in glioblastoma tissue compared with the adjacent normal brain. Hsa_circ_0008344, among the top differentially expressed circRNAs, was significantly upregulated in IDH1 wild‐type glioblastoma. Further in vitro studies showed that knockdown of hsa_circ_0008344 suppressed glioblastoma cell proliferation, colony formation, migration, and invasion, but increased cell apoptotic rate. Conclusions: Hsa_circ_0008344 is upregulated in glioblastoma and may contribute to the progression of this malignancy.