The Branched Nature of the Nonsense-Mediated mRNA Decay Pathway.

The Branched Nature of the Nonsense-Mediated mRNA Decay Pathway.
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DOI:
10.1016/j.tig.2020.08.010
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发表时间:
2021-03
期刊:
Trends in genetics : TIG
影响因子:
--
通讯作者:
Singh G
Singh G
中科院分区:
其他
文献类型:
--
作者:
Yi Z;Sanjeev M;Singh G

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无义介导的信使核糖核酸衰变(NMD)是所有真核生物中一种保守的翻译偶联质量控制机制,它调节异常和正常转录本中相当大一部分的表达。在脊椎动物中,由于NMD调控的转录本的多样性的扩大,特别是在不同的发育过程中,NMD已经成为一个必不可少的过程。然而,令人惊讶的是,一些对简单生物体的NMD至关重要的核心NMD因子似乎对脊椎动物的NMD是可有可无的。同时,在包括脊椎动物在内的多细胞生物中也发现了大量的NMD增强子和抑制子。总而言之,现有的数据表明,脊椎动物NMD是一个复杂的分支途径,其中各个分支调节特定的mRNA亚群,以实现不同的生理功能。
Nonsense-mediated mRNA decay (NMD) is a conserved translation-coupled quality control mechanism in all eukaryotes that regulates the expression of a significant fraction of both the aberrant and normal transcriptomes. In vertebrates, NMD has become an essential process owing to expansion of the diversity of NMD-regulated transcripts, particularly during various developmental processes. Surprisingly, however, some core NMD factors that are essential for NMD in simpler organisms appear to be dispensable for vertebrate NMD. At the same time, numerous NMD enhancers and suppressors have been identified in multicellular organisms including vertebrates. Collectively, the available data suggest that vertebrate NMD is a complex, branched pathway wherein individual branches regulate specific mRNA subsets to fulfill distinct physiological functions.
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