LncRNA PVT1 promotes malignant progression in squamous cell carcinoma of the head and neck.

LncRNA PVT1 promotes malignant progression in squamous cell carcinoma of the head and neck.
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LncRNA PVT1促进头颈部鳞状细胞癌的恶性进展

DOI:
10.7150/jca.26465
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发表时间:
2018
期刊:
影响因子:
3.9
通讯作者:
Liu Y
Liu Y
中科院分区:
医学3区
文献类型:
--
作者:
Yu C;Wang Y;Li G;She L;Zhang D;Chen X;Zhang X;Qin Z;Cao H;Liu Y

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长链非编码RNA(lncRNA)是癌症恶性行为的潜在关键调节因子。已在多种人类癌症中报道了lncRNA PVT 1的异常表达和功能障碍。然而,其在头颈部鳞状细胞癌(SCCHN)中的作用仍然很大程度上未知。我们目前的研究表明,PVT 1的表达增加SCCHN。PVT 1的高表达与SCCHN的T分期、临床分期及颈淋巴结转移呈正相关。更重要的是,PVT 1高表达预示SCCHN患者预后不良。功能获得和功能丧失研究进一步表明,PVT 1在体外和体内促进SCCHN的增殖和侵袭,并伴有上皮-间充质转化和增强癌干细胞样性质。进一步的机制研究表明,PVT 1激活Wnt/β-catenin信号通路,抑制Wnt/β-catenin信号通路可逆转PVT 1过表达引起的恶性进展。总之,我们的研究表明,PVT 1加速了SCCHN的恶性进展,并代表了SCCHN的潜在生物标志物和治疗靶点。
Long non-coding RNAs (lncRNAs) are potentially critical regulators of cancer malignant behaviours. Aberrant expression and dysfunction of lncRNA PVT1 have been reported in multiple human cancers. However, its role in squamous cell carcinoma of the head and neck (SCCHN) remains largely unknown. Our current study demonstrated that PVT1 expression was increased in SCCHN. High PVT1 expression was positively correlated with SCCHN clinical parameters including T classification, clinical stages and cervical lymph node metastasis. More importantly, high PVT1 expression predicted a poor prognosis in SCCHN patients. Gain-of function and loss-of function studies further indicated that PVT1 promoted the proliferation and invasion of SCCHN both in vitro and in vivo, which was accompanied by epithelial-mesenchymal transition and enhanced cancer stem cell-like properties. Further mechanistic investigation revealed that PVT1 activated Wnt/β-catenin signalling pathway, and inhibition of Wnt/β-catenin signalling reversed the malignant progression caused by PVT1 overexpression. Together, our study reveals that PVT1 accelerates the malignant progression of SCCHN and represents a potential biomarker and therapeutic target in SCCHN.
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