NAT CELL BIOL:我们体内的非编码RNA竟然是促进癌症生长和转移的“元凶”!

2017-08-22 佚名 medicalxpress

南卡罗来纳医科大学研究人员的最新研究报告发表于《自然细胞生物学》杂志中,在报告中研究人员指出肿瘤发展和转移的罪魁祸首,非编码RNA吸收微RNA,阻止上皮膜到间叶细胞的过渡,这是肿瘤发展的关键特性之一。

南卡罗来纳医科大学研究人员的最新研究报告发表于《自然细胞生物学》杂志中,在报告中研究人员指出肿瘤发展和转移的罪魁祸首,非编码RNA吸收微RNA,阻止上皮膜到间叶细胞的过渡,这是肿瘤发展的关键特性之一。

细胞通常可以产生不同形式的RNA,而复制一个DNA链的基因必须切割和组装成最终的RNA形式或多种形式,这一过程称为可变剪接。然而,尽管这些替代形式的RNA可以编码不同的蛋白质,科学家们发现许多类型的RNA并没有这样做,它们执行着截然不同的功能,调节着细胞命运和行为。

在此次研究中,一种非编码RNA(lncRNA)引起了科学家的兴趣,它们发现,lncRNA有助于癌症恶化,lncRNA不编码蛋白质,而是像海绵一样吸收某些负责从上皮膜到间叶细胞过度的微RNA,这是肿瘤生长和转移的一个关键特性。

研究人员试图连接这些点来解释它是如何发生的,首先,他们发现乳腺癌细胞含有更多 lncRNA,为了证明非编码RNA与癌症发展的关系,研究人员以乳腺癌为例进行实验研究,

他们下了一个名为hnRNP E1的核糖核蛋白,结合RNA选择性剪接。试验结果与预期的一样,这种非编码RNA促进了肿瘤的生长和转移。

这一研究为全新的抗癌方法打开了另一扇大门。

原始出处:
 Simon Grelet, Laura A. Link, Breege Howley,et al.A regulated PNUTS mRNA to lncRNA splice switch mediates EMT and tumour progression, Nature Cell Biology (2017).21 August 2017 ,DOI: 10.1038/ncb3595

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    2018-05-02 zhaojie88
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    2018-03-24 sunylz
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    2017-09-22 维他命
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    2018-02-07 d830384
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    2017-09-01 liye789132251
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