Oncotarge:科学家发现空气污染诱发肺癌关键长链非编码RNA

2016-07-26 周光飚等 Oncotarge

中科

中科院动物所周光飚研究组通过深入研究,发现了空气污染诱发肺癌的关键长链非编码RNA。相关成果日前发表于肿瘤学杂志Oncotarge

据了解,肺癌已成为全球发病率最高、致死人数最多的癌症,其中90%的肺癌由吸烟、空气污染等环境因素引起。然而,空气污染诱发肺癌的分子机制目前尚不清楚。

此前研究发现,空气污染可引起机体基因组发生大量突变;炎症因子CXCL13和CXCL20、miRNA-144等在空气污染和吸烟引发的肺癌中发挥重要作用。此次研究人员分析了长链非编码RNA(lncRNA)在空气污染引发肺癌过程中所起的作用。

据了解,lncRNA是一类可在转录、转录后和表观遗传水平调控基因表达的非编码核糖核酸。通过lncRNA芯片,研究者发现,空气污染区肺癌样本含有更多异常表达的lncRNA,且CAR10是一个和空气污染相关的长链非编码RNA。研究显示,CAR10高表达与空气污染相关。

进一步研究表明,多环芳烃家族的二苯并蒽通过转录因子FoxF2促进CAR10在肺上皮细胞中的表达,而CAR10与转录因子YB-1结合后,抑制其被蛋白酶体降解,引起细胞核内YB-1蛋白的积累,促进表皮生长因子的表达,进而促进细胞增殖、诱发肺癌。

原始出处

Ming-Ming Wei1,*, Yong-Chun Zhou2,*, Zhe-Sheng Wen3,*, Bo Zhou1,*, Yun-Chao Huang2, Gui-Zhen Wang1, Xin-Chun Zhao1, Hong-Li Pan1, Li-Wei Qu1, Jian Zhang1, Chen Zhang1, Xin Cheng1, Guang-Biao Zhou1.Long non-coding RNA stabilizes the Y-box-binding protein 1 and regulates the epidermal growth factor receptor to promote lung carcinogenesis.Oncotarge.2016

相关会议推荐:http://www.bioon.com/z/2016ncrna/


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    2017-05-08 d830384
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