Abstract
This study was designed to characterize the effect of lncRNA XIST on the migration as well as proliferation of tongue squamous cell carcinoma (TSCC) and its associated molecular mechanisms. Chip-seq analysis screened the aberrant lncRNA in TSCC patients. CCK-8 and scratch experiment detected cell migration and proliferation in TSCC after lncRNA XIST inhibition. We predicted and verified lncRNA XIST target miRNA. CCK-8 and scratch test examined the cell migration and proliferation effects in TSCC after transfection of miR-124 mimics. Luciferase reporter experiment confirmed the interaction of miR-124 with JAG1. Western blot validated influence of lncRNA XIST on miR-124/JAG1 axis. We found that lncRNA XIST was up-regulated in TSCC patients, and it facilitated the TSCC cell migration and proliferation in vitro. lncRNA XIST regulated miR-124 expression through ceRNA mechanism. Up-regulating miR-124 significantly inhibited TSCC cell migration and proliferation. JAG1 acted as immediate target of miR-124. Moreover, lncRNA XIST targeted miR-124 to regulate JAG1 levels through the ceRNA mechanism. IncRNA XIST encourages TSCC migration and proliferation by modulating miR-124/JAG1 axis.
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