Journal
JOURNAL OF CELLULAR PHYSIOLOGY
Volume 234, Issue 11, Pages 20206-20216Publisher
WILEY
DOI: 10.1002/jcp.28620
Keywords
cell proliferation; ceRNA; DLX1; lncRNA TUG1; oral squamous cell carcinoma
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Long noncoding RNA (lncRNA) exerts a potential regulatory role in tumorigenesis. LncRNA TUG1 expression remains high in oral squamous cell carcinoma (OSCC) tissues. However, its biological mechanism in OSCC remains unknown. In this study, TUG1 expression in OSCC cells was detected by quantitative real-time polymerase chain reaction. Proliferative and migratory potentials of OSCC cells were determined by Cell Counting Kit 8, 5-Ethynyl-2 '- deoxyuridine (EdU), and Transwell assay, respectively. We identified the potential target of TUG1 through bioinformatics and dual-luciferase reporter gene assay. Furthermore, their interaction and functions in regulating the development of OSCC were clarified by western blot and RNA immunoprecipitation assay. Our results demonstrated a high expression of TUG1 in OSCC cells. Overexpression of TUG1 markedly accelerated proliferative and migratory potentials of OSCC cells. Besides, TUG1 could positively regulate the expression of distal-less homeobox 1 (DLX1) by competing with miR-524-5p. These results indicated that TUG1 participated in the development of OSCC as a competing endogenous RNA to competitively bind to miR-524-5p and thus mediate DLX1 expression.
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