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Article type: Research Article
Authors: Wang, Xiaoqionga | Jin, Qiaozhib | Wang, Xuec | Chen, Wubingb | Cai, Zhiyib; *
Affiliations: [a] The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China | [b] Taizhou Minicipal Hospital, Taizhou, Zhejiang, China | [c] Yuhang District First People’s Hospital, Hangzhou, Zhejiang, China
Correspondence: [*] Corresponding author: Zhiyi Cai, Taizhou Municipal Hospital, Jiaojiang District, Zhongshan East Road, No. 381, Taizhou, Zhejiang 318000, China. Fax: +86 0576 88858024, E-mail: caizhiyi1962@163.com.
Abstract: BACKGROUND: Increasing evidence shows that long non-coding RNAs (lncRNAs) play a key role in the development of various cancers. Zinc finger antisense 1 (ZFAS1) is a novel lncRNA with previously demonstrated associations with several types of cancer. Here we examined the expression and potential function of the ZFAS1 in nasopharyngeal carcinoma (NPC). METHODS: We detected ZFAS1 expression in GSE12452, a human microarray dataset, and NPC cell lines. Small interfering RNA against ZFAS1 was used to elucidate the cellular functions of ZFAS1 using MTT, colony formation, cell cycle, cell apoptosis, transwell invasion and migration and western blot assays. An activator of the PI3K/AKT signaling pathway (740Y-P) was used to determine the contribution of PI3K/AKT. RESULTS: ZFAS1 was significantly upregulated in NPC tissues and cell lines. Silencing ZFAS1 significantly inhibited cell proliferation and invasion, arrested cell cycle progression and promoted cell apoptosis, as well as reduced epithelial–mesenchymal transition. Moreover, 740Y-P could rescue the effects of ZFAS1 knockdown on proliferation, apoptosis and invasion in 5-8F cells. CONCLUSIONS:ZFAS1 might play an oncogenic role in NPC and facilitate cell proliferation and invasion via the PI3K/AKT signaling pathway in NPC cells.
Keywords: ZFAS1, nasopharyngeal carcinoma, EMT, apoptosis, p-AKT
DOI: 10.3233/CBM-182080
Journal: Cancer Biomarkers, vol. 26, no. 2, pp. 171-182, 2019
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