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    Non-coding RNAs play a critical role in the occurrence and development of oral cancer. The present study is aimed to identify long non-coding RNA (lncRNA) that might be novel effective targets for the treatments of oral cancer and the underlying mechanism. The microarray profiling and RNA-sequencing analysis were performed to identify lncRNAs related to oral cancer development, and lncRNA DNM3OS was selected. DNM3OS knockdown was generated in cancer cell lines, and the specific effects of DNM3OS knockdown on cell phenotype were examined. DNM3OS targeted miRNA and miRNA targeted downstream mRNA were selected, the predicted bindings were verified, and the specific effects of miRNA on oral cancer cells were examined. Finally, the dynamic effects of DNM3OS and miRNA on target mRNA expression and oral cancer cell phenotype were examined. DNM3OS was upregulated in oral cancer tissues and cells. DNM3OS knockdown in CAL27 and SCC-9 cells inhibited cell viability and migration. DNM3OS targeted miR-204-5p to inhibit miR-204-5p expression. miR-204-5p overexpression suppressed oral cancer cell aggressiveness. miR-204-5p targeted HIP1 to inhibit HIP1 expression. HIP1 knockdown inhibited oral cancer cell viability and migration. The effects of DNM3OS knockdown were significantly reversed by miR-204-5p inhibition. Within oral carcinoma tissue samples, expression of DNM3OS and HIP1 was increased whereas the miR-204-5p expression was downregulated; miR-204-5p had a negative correlation with DNM3OS and HIP1, respectively, while DNM3OS and HIP1 were positively correlated with each other. Long non-coding RNA DNM3OS, miR-204-5p, and HIP1 form an axis that modulates oral cancer cell viability and migration. © 2020 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.


    Xiaodan Fang, Zhangui Tang, Haixia Zhang, Hongzhi Quan. Long non-coding RNA DNM3OS/miR-204-5p/HIP1 axis modulates oral cancer cell viability and migration. Journal of oral pathology & medicine : official publication of the International Association of Oral Pathologists and the American Academy of Oral Pathology. 2020 Oct;49(9):865-875

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    PMID: 32463958

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