Open Access

ARTICLE

Knockdown of Long Noncoding RNA CCAT2 Inhibits Cellular Proliferation, Invasion, and Epithelial–Mesenchymal Transition in Glioma Cells

Jing Zeng^*1, Tianping Du^†1, Yafeng Song^‡, Yan Gao^‡, Fuyan Li^‡, Ruimin Wu^‡, Yijia Chen^‡, Wei Li^‡, Hong Zhou^‡, Yi Yang^‡, Zhijun Pei^‡

* Department of Infection Control, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei Province, P.R. China
† Department of Neurosurgery, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei Province, P.R. China
‡ Department of PET Center and Institute of Anesthesiology and Pain, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei Province, P.R. China

Oncology Research 2017, 25(6), 913-921. https://doi.org/10.3727/096504016X14792098307036

Abstract

Long noncoding RNA (lncRNA) colon cancer-associated transcript 2 (CCAT2) has been demonstrated to play an important role in diverse tumorigenesis. However, the biological function of lncRNAs in glioma is still unknown. In this study, we found that lncRNA CCAT2 was overexpressed in glioma tissues and cell lines and associated with tumor grade and size. Furthermore, patients with high levels of lncRNA CCAT2 had poorer survival than those with lower levels of lncRNA CCAT2. Knocking down lncRNA CCAT2 expression significantly suppressed the glioma cell growth, migration, and invasion, as well as induced early apoptosis of glioma cells in vitro. Moreover, lncRNA CCAT2 regulated epithelial–mesenchymal transition (EMT)-associated gene expression. In conclusion, lncRNA CCAT2 plays an important role in glioma tumorigenesis and progression and may act as a potential biomarker for therapeutic strategy and prognostic prediction.

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