miR-124 Inhibits Lung Tumorigenesis Induced by K-ras Mutation and NNK.

miR-124 Inhibits Lung Tumorigenesis Induced by K-ras Mutation and NNK.
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miR-124 抑制 K-ras 突变和 NNK 诱导的肺肿瘤发生

DOI:
10.1016/j.omtn.2017.09.005
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发表时间:
2017-12-15
期刊:
Molecular therapy. Nucleic acids
影响因子:
--
通讯作者:
Xu CX
Xu CX
中科院分区:
其他
文献类型:
--
作者:
Jin H;Li Q;Cao F;Wang SN;Wang RT;Wang Y;Tan QY;Li CR;Zou H;Wang D;Xu CX

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miRNAs表达异常在K-ras基因突变或吸烟引起的肺癌发生中起重要作用。本研究旨在探讨miR-124在K-ras突变或吸烟致肺癌发生中的作用和机制,并评估miR-124 agomiR在K-ras突变或吸烟致肺癌治疗中的潜在作用。我们的数据显示,吸烟抑制miR-124表达,并且miR-124表达降低与p-Akt水平呈负相关,并预测非小细胞肺癌(NSCLC)患者的总体生存率较差。miR-124的过表达通过靶向Akt 1和Akt 2抑制Akt通路来抑制NSCLC生长。此外,全身递送miR-124 agomiR通过增加细胞凋亡和抑制细胞增殖显著抑制NNK诱导的肺癌模型和K-rasLA 1转基因小鼠中的肿瘤发生。我们的研究结果表明,吸烟抑制了miR-124的表达,而减少的miR-124有助于Akt激活,从而促进NSCLC进展。我们的发现也代表了一种新的潜在的肺癌治疗策略。
Dysregulated miRNAs play important role in K-ras mutation or smoking caused lung tumorigenesis. Here, we investigate the role and mechanism of miR-124 in K-ras mutation or smoking-caused lung tumorigenesis and evaluate the therapeutic potential of miR-124 agomiR in K-ras mutation or smoking-caused lung cancer treatment. Our data show that smoking suppresses miR-124 expression, and decreased miR-124 expression is inversely correlated with the p-Akt level and predicts poor overall survival in non-small-cell lung cancer (NSCLC) patients. The overexpression of miR-124 suppressed NSCLC growth by inhibiting the Akt pathway by targeting Akt1 and Akt2. In addition, the systemic delivery of miR-124 agomiR dramatically suppressed tumorigenesis in both NNK-induced lung cancer model and K-rasLA1 transgenic mice by increasing apoptosis and inhibiting cell proliferation. Our findings suggest that smoking inhibits the expression of miR-124, and decreased miR-124 contributes to Akt activation, thereby promoting NSCLC progression. Our findings also represent a novel potential therapeutic strategy for lung cancer.
对于乳腺癌患者而言,microRNA-124的表达降低是独立的不利预后因素。
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发表时间: 2015-04-29
影响因子: 2.6
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期刊: ONCOGENE
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MiR-124 控制神经胶质瘤生长和血管生成,并通过靶向 R-Ras 和 N-Ras 增强化疗敏感性。
DOI: 10.1093/neuonc/nou084
发表时间: 2014-10-01
期刊: NEURO-ONCOLOGY
影响因子: 15.9
作者:
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