ISSN: 1837-9664Journal of Cancer
Global reach, higher impact
J Cancer 2023; 14(16):3009-3022. doi:10.7150/jca.85019 This issue Cite
Research Paper
Long Non-coding RNA Linc01224 Regulates Hypopharyngeal Squamous Cell Carcinoma Growth Through Interactions with miR-485-5p and IGF2BP3
1. Department of Otolaryngology, The Eighth Affiliated Hospital of Sun Yat-sen University, 518033, Shenzhen, China.
2. Department of Otolaryngology, Affiliated Zhongshan Hospital of Dalian University, 116000, Dalian, China.
3. Department of Oncology, The First Affiliated Hospital of Dalian Medical University, 116000, Dalian, China.
4. Department of Otolaryngology, The First Affiliated Hospital of Dalian Medical University, 116000, Dalian, China.
#Both authors contributed equally to the research.
Abstract
Increasing evidence illustrates that long non-coding RNAs (lncRNAs) play significant oncogenic roles, including hypopharyngeal squamous cell carcinoma (HSCC). The function and mechanism of long non-coding RNAs (lncRNAs) in hypopharyngeal squamous cell carcinoma (HSCC) have not been fully elucidated. Therefore, this study aimed to investigate the role of a specific lncRNA, linc01224, in regulating the miR-485-5p/IGF2BP3 axis in HSCC. We confirmed the lncRNA expression profiles in 5 pairs of HSCC and normal tissues by lncRNA sequencing. Another 28 HSCC tissues were further validated by quantitative real-time PCR (qRT-PCR). qRT-PCR was also used to detect the expression levels of linc01224, miR-485-5p and IGF2BP3 in HSCC cell lines. Next, functional experiments in vitro and in vivo were applied to determine the effects of linc01224 silencing on tumor proliferation, migration, apoptosis and progression in HSCC. Linc01224 expression was significantly higher in HSCC tissues than in adjacent normal tissues. In addition, HSCC patients with low IGF2BP3 expression had good survival. In vitro assays were mechanistically performed to explore whether linc01224 positively regulates IGF2BP3 expression via its competitive inhibition of miR-485-5p. An in vivo animal model also confirmed that linc01224 could promote the occurrence and development of HSCC. Our study first identified that linc01224 plays an oncogenic role in HSCC. It suggests that linc01224 may act as a prognostic biomarker and potential therapeutic target for HSCC.
Keywords: Hypopharyngeal Neoplasms, RNA, Long Noncoding, microRNAs, oncogenes, linc01224, miR-485-5p, IGF2BP3
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