MicroRNA‑363‑3p inhibits tumor cell proliferation and invasion in oral squamous cell carcinoma cell lines by targeting SSFA2

Zhu,Liangming; Zhang,Lei; Tang,Ying; Zhang,Fang; Wan,Chao; Xu,Liang; Guo,Ping

doi:10.3892/etm.2021.9981

MicroRNA‑363‑3p inhibits tumor cell proliferation and invasion in oral squamous cell carcinoma cell lines by targeting SSFA2

Authors:
- Liangming Zhu
- Lei Zhang
- Ying Tang
- Fang Zhang
- Chao Wan
- Liang Xu
- Ping Guo
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Affiliations: Department of Stomatology, Yijishan Hospital, The First Affiliated Hospital of Wannan Medical College, Wuhu, Anhui 241000, P.R. China, Jiangcheng Dental Clinic, Wuhu, Anhui 241000, P.R. China, Department of Endocrinology, Wuhu Hospital of Traditional Chinese Medicine, Wuhu, Anhui 241000, P.R. China
Published online on: March 24, 2021 https://doi.org/10.3892/etm.2021.9981
Article Number: 549

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Abstract

The aim of the present study was to evaluate the expression levels of microRNA (miR)‑363‑3p and its underlying physiological function in oral squamous cell carcinoma (OSCC). miR‑363‑3p expression levels were measured in OSCC cell lines using reverse transcription‑quantitative PCR. The role of miR‑363‑3p in OSCC cells was examined using gain‑of‑function assays in vitro. Cell proliferation was assessed using Cell Counting Kit‑8, 5‑ethynyl‑2'‑deoxyuridine assays and flow cytometry. Cell migration and invasion were evaluated in wound‑healing and Transwell Matrigel assays. In addition, bioinformatics analysis predicted binding sites of miR‑363‑3p on sperm‑specific antigen 2 (SSFA2). Luciferase reporter and RNA pull‑down assays were conducted to test whether miR‑363‑3p interacted with SSFA2. miR‑363‑3p expression was downregulated in OSCC cell lines compared with that in the normal epithelial cell line (NHOK). Additionally, miR‑363‑3p overexpression suppressed OSCC cell proliferation, migration and invasion in vitro. SSFA2 was verified as a direct target of miR‑363‑3p, and SSFA2 overexpression partially counteracted the inhibitory effects of miR‑363‑3p on cell proliferation, migration and invasion in OSCC cell lines. Thus, miR‑363‑3p may serve as a tumor suppressor via targeting SSFA2 and may represent a potential therapeutic target for OSCC.

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