The Long Noncoding RNA NEAT1 Targets miR-34a-5p and Drives Nasopharyngeal Carcinoma Progression via Wnt/β-Catenin Signaling.

Content Provider	Europe PMC
Author	Ji, Yuqing Wang, Man Li, Xueshen Cui, Fusheng
Copyright Year	2019
Abstract	PurposeLong noncoding RNA nuclear paraspeckle assembly transcript 1 (NEAT1) has been deemed an oncogene in many human cancers. However, the underlying mechanism of NEAT1 in nasopharyngeal carcinoma (NPC) progression remains largely unclear.Materials and MethodsQuantitative real-time PCR assay was performed to assess the expression of NEAT1 and miR-34a-5p in NPC tissues and cells. Western blot analysis was used to observe cell epithelial to mesenchymal transition (EMT) and the activation of Wnt/β-catenin signaling in 5-8F cells. MiRNA directly interacting with NEAT1 were verified by dual-luciferase reporter assay and RNA immunoprecipitation. Cell proliferation ability was determined by CCK-8 assay, and cell migration and invasion capacities were assessed by transwell assays. An animal model was used to investigate the regulatory effect of NEAT1 on tumor growth in vivo.ResultsOur data revealed that NEAT1 is upregulated, while miR-34a-5p is downregulated in NPC tissues and cell lines. NEAT1 knockdown repressed tumor growth in vitro and in vivo. Additionally, we discovered that NEAT1 directly binds to miR-34a-5p and suppresses miR-34a-5p expression. Moreover, NEAT1 knockdown exerted suppression effects on cell proliferation, migration, invasion, and EMT by miR-34a-5p. NEAT1 knockdown blocked Wnt/β-catenin signaling via miR-34a-5p.ConclusionOur study demonstrated that NEAT1 targets miR-34a-5p at least partly to drive NPC progression by regulating Wnt/β-catenin signaling, suggesting a potential therapeutic target for NPC.
ISSN	05135796
Volume Number	60
PubMed Central reference number	PMC6433575
Issue Number	4
PubMed reference number	30900419
Journal	Yonsei Medical Journal [Yonsei Med. J]
e-ISSN	19762437
DOI	10.3349/ymj.2019.60.4.336
Language	English
Publisher	Yonsei University College of Medicine
Publisher Date	2019-04-01
Access Restriction	Open
Rights License	This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (https://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. © Copyright: Yonsei University College of Medicine 2019
Subject Keyword	Nasopharyngeal carcinoma lncRNA NEAT1 miR-34a-5p Wnt/β-catenin signaling pathway
Content Type	Text
Resource Type	Article
Subject	Medicine