MicroRNA-141-3p promoted the progression of nasopharyngeal carcinoma through targeting DLC1.

European Review for Medical and Pharmacological Sciences
J-W MuJ-B Jiao

Abstract

Previous studies have shown that the function of miR-141 has tissue specificity. However, the role of miR-141-3p has not been reported in nasopharyngeal carcinoma (NPC). Therefore, this study explored the function of miR-141-3p in NPC. MiR-141-3p expression in NPC tissues was examined via quantitative Real Time-Polymerase Chain Reaction (qRT-PCR) assay. Cell Counting Kit-8 (CCK-8) and transwell assays were used to explore the function of miR-141-3p. The relationship between miR-141-3p and DLC1 was verified by Dual-Luciferase assay. Protein expression was observed by immunocytochemical assay and Western blot analysis. Upregulation of miR-141-3p associated with poor prognosis was detected in NPC patients. Moreover, overexpression of miR-141-3p promoted cell proliferation, migration, and invasion in NPC cells. It was also found that miR-141-3p promoted EMT and activated the mTOR signaling pathway in NPC. Furthermore, DLC1 was indicated as a direct target of miR-141-3p and miR-141-3p negatively correlated with DLC1 expression in NPC. In particular, upregulation of DLC1 could impair the promoted effect of miR-141-3p in NPC. MiR-141-3p promotes the progression of NPC by targeting DLC1 and activating the mTOR pathway.

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