Dynamic RNA Modifications in Gene Expression Regulation.

Dynamic RNA Modifications in Gene Expression Regulation.
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DOI:
10.1016/j.cell.2017.05.045
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发表时间:
2017-06-15
期刊:
影响因子:
64.5
通讯作者:
He C
He C
中科院分区:
生物学1区
文献类型:
--
作者:
Roundtree IA;Evans ME;Pan T;He C

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在细胞RNA中已经鉴定出超过一百种类型的化学修饰。虽然真核生物信使RNA的5'帽修饰和poly(A)尾在调控中起关键作用,但内部修饰因其在mRNA代谢中的作用而受到关注。最丰富的内部修饰是N6-甲基腺苷(m6 A),并且对安装、识别和去除这种标记和其他标记的蛋白质的鉴定已经揭示了mRNA修饰在mRNA生命周期的几乎每个方面以及在各种细胞、发育和疾病过程中的作用。大量的非编码RNA如转移RNA、核糖体RNA和剪接体RNA也被大量修饰,并且它们的生物发生和功能依赖于修饰。我们对这些不同化学修饰的生物学贡献的理解开始形成,但很明显,在编码和非编码RNA中,动态修饰代表了对遗传信息的新控制层。
Over one hundred types of chemical modifications have been identified in cellular RNAs. While the 5’ cap modification and the poly(A) tail of eukaryotic messenger RNA play key roles in regulation, internal modifications are gaining attention for their roles in mRNA metabolism. The most abundant internal modification is N6-methyladenosine (m6A), and identification of proteins that install, recognize, and remove this and other marks have revealed roles for mRNA modification in nearly every aspect of the mRNA lifecycle, as well as in various cellular, developmental, and disease processes. Abundant noncoding RNAs such as transfer RNAs, ribosomal RNAs and spliceosomal RNAs are also heavily modified and depend on the modifications for their biogenesis and function. Our understanding of the biological contributions of these different chemical modifications is beginning to take shape, but it’s clear that in both coding and noncoding RNA, dynamic modifications represent a new layer of control of genetic information.
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