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Blood:ADAR1过度编辑多发性骨髓瘤的转录本,促进病程进展,是预后不良的标志之一

2018-08-02 MedSci MedSci原创

迄今为止,多发性骨髓瘤(MM)仍是一种无法治愈的疾病,目前在MM患者中广泛发现DNA该变;但是,DNA改变不能完全解释MM的所有生物和分子异常。今年来,已发现RNA水平异常与癌症的生物学特性具有相关性。ADAR1介导的A-I编辑是人类生理的一个重要的转录后修饰机制;其异常在MM中的生物学意义,尤其是在整体水平,尚未得到阐明。Phaik Ju Teoh等人尝试阐明RNA编辑的生物学应用,以及其是对M

迄今为止,多发性骨髓瘤(MM)仍是一种无法治愈的疾病,目前在MM患者中广泛发现DNA该变;但是,DNA改变不能完全解释MM的所有生物和分子异常。今年来,已发现RNA水平异常与癌症的生物学特性具有相关性。

ADAR1介导的A-I编辑是人类生理的一个重要的转录后修饰机制;其异常在MM中的生物学意义,尤其是在整体水平,尚未得到阐明。

Phaik Ju Teoh等人尝试阐明RNA编辑的生物学应用,以及其是对MM病理过程有什么作用。经研究发现,由于ADAR1过表达,MM转录本被过度编辑。这一变化与患者独立于1q21扩增之外的存活期相关,并可影响患者对不同的治疗方案的反应性。研究人员进一步进行功能分析发现ADAR1具有致癌性,可通过RNA编辑依赖性方式驱动细胞生长增殖。此外,研究人员还发现在MM中,NEIL1(配对切除修复基因)是一个广泛存在的ADAR1靶点。重编码的NEIL1蛋白表现为氧化损伤修复能力缺陷和功能获得性的特征。

总而言之,Phaik Ju Teoh等人的研究表明ADAR1介导的A-I编辑在MM的临床表现和生物学特征上均发挥一定作用,为我们从整体RNA水平剖析MM的分子病理提供新的见解。

原始出处:

Phaik Ju Teoh,et al. Aberrant hyperediting of myeloma transcriptome by ADAR1 confers oncogenicity and is a marker of poor prognosis. Blood  2018  :blood-2018-02-832576;  doi: https://doi.org/10.1182/blood-2018

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    2019-07-10 mjldent
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    2018-08-20 jml2009
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    2018-08-04 般若傻瓜
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