Gold nano-particles (AuNPs) carrying anti-EBV-miR-BART7-3p inhibit growth of EBV-positive nasopharyngeal carcinoma.

Gold nano-particles (AuNPs) carrying anti-EBV-miR-BART7-3p inhibit growth of EBV-positive nasopharyngeal carcinoma.
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携带抗EBV-miR-BART7-3p的金纳米颗粒(AuNPs)抑制EBV阳性鼻咽癌的生长

DOI:
10.18632/oncotarget.3046
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发表时间:
2015-04-10
期刊:
影响因子:
--
通讯作者:
Li X
Li X
中科院分区:
其他
文献类型:
--
作者:
Cai L;Li J;Zhang X;Lu Y;Wang J;Lyu X;Chen Y;Liu J;Cai H;Wang Y;Li X

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EB病毒(EBV)感染是鼻咽癌的主要致病因素。一些EBV编码的BART miRNAs与病毒潜伏、免疫逃逸、细胞存活、细胞增殖和细胞凋亡有关。在这里,我们报道了EBV-miR-BART7-3p,一种在鼻咽癌中高表达的EBV编码的BART miRNA,与体外细胞周期进展和体内肿瘤形成增加相关。该病毒miRNA激活PTEN/PI3K/Akt通路,诱导c-Myc和c-Jun.PTEN基因的敲除模拟了EBV-miR-BART7-3p诱导的致瘤表型。基于这些结果,我们利用携带抗EBV-miR-BART7-3p的金纳米颗粒(AuNPs)进行治疗实验。在动物模型中,沉默EBV-miR-BART7-3p可抑制肿瘤生长。我们得出结论,EBV-miR-BART7-3p有利于肿瘤的发生,为基于miRNA的治疗提供了潜在的靶点。
Epstein-Barr virus (EBV) infection is a major etiological factor for nasopharyngeal carcinoma (NPC). Several EBV-encoded BART miRNAs have been associated with viral latency, immune escape, cell survival, cell proliferation and apoptosis. Here, we report that EBV-miR-BART7-3p, an EBV-encoded BART miRNA highly expressed in NPC, was correlated with cell-cycle progression in vitro and increased tumor formation in vivo. This viral miRNA stimulated the PTEN/PI3K/Akt pathway and induced c-Myc and c-Jun. Knockdown of PTEN mimicked EBV-miR-BART7-3p-induced tumorigenic phenotype. Based on these results, we conducted a therapeutic experiment by using gold nano-particles (AuNPs) carrying anti-EBV-miR-BART7-3p. Silencing of EBV-miR-BART7-3p reduced tumor growth in animal model. We conclude that EBV-miR-BART7-3p favors carcinogenesis, representing a potential target for miRNA-based therapy.
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