Long non-coding RNA PVT1 predicts poor prognosis and induces radioresistance by regulating DNA repair and cell apoptosis in nasopharyngeal carcinoma.

Long non-coding RNA PVT1 predicts poor prognosis and induces radioresistance by regulating DNA repair and cell apoptosis in nasopharyngeal carcinoma.
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长链非编码RNA PVT1通过调节鼻咽癌DNA修复和细胞凋亡来预测不良预后并诱导放射抗性

DOI:
10.1038/s41419-018-0265-y
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发表时间:
2018-02-14
影响因子:
9
通讯作者:
Li G
Li G
中科院分区:
生物学1区
文献类型:
--
作者:
He Y;Jing Y;Wei F;Tang Y;Yang L;Luo J;Yang P;Ni Q;Pang J;Liao Q;Xiong F;Guo C;Xiang B;Li X;Zhou M;Li Y;Xiong W;Zeng Z;Li G

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浆细胞瘤变异易位1(plasmacytoma variant translocation 1,PVT 1)是一种长链非编码RNA,在多种肿瘤中高度表达,被认为是一种潜在的癌基因。然而,PVT 1在鼻咽癌(NPC)发生和发展中的作用和作用机制仍不清楚。在这项研究中,我们首次发现PVT 1在NPC中的表达高于正常鼻咽上皮组织,并且显示PVT 1高表达的NPC患者的无进展生存率和总生存率更差。此外,我们观察到NPC细胞的增殖下降,其凋亡率增加;这些结果表明,在NPC细胞中PVT 1表达的敲低诱导辐射敏感性。此外,我们已经表明,PVT 1表达的敲低可以通过影响放疗后DNA损伤修复途径诱导NPC细胞凋亡。总的来说,我们的研究表明,PVT 1可能是一种新的预后生物标志物和治疗NPC的新靶点。另外,靶向PVT 1可能是NPC临床治疗和提高NPC放射治疗效果的潜在策略。
The long non-coding RNA, plasmacytoma variant translocation 1 (PVT1), is highly expressed in a variety of tumors, and is believed to be a potential oncogene. However, the role and mechanism of action of PVT1 in the carcinogenesis and progression of nasopharyngeal carcinomas (NPCs) remains unclear. In this study, for the first time, we have discovered that PVT1 shows higher expression in NPCs than in normal nasopharyngeal epithelial tissue, and patients with NPCs who show higher expression of PVT1 have worse progression-free and overall survivals. Additionally, we observed that the proliferation of NPC cells decreased, and their rate of apoptosis increased; these results indicated that the knockdown of PVT1 expression in the NPC cells induced radiosensitivity. Further, we have shown that the knockdown of PVT1 expression can induce apoptosis in the NPC cells by influencing the DNA damage repair pathway after radiotherapy. In general, our study shows that PVT1 may be a novel biomarker for prognosis and a new target for the treatment of NPCs. Additionally, targeting PVT1 may be a potential strategy for the clinical management of NPC and for the improvement of the curative effect of radiation in NPCs.
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