RNA Function. RNA and dynamic nuclear organization.

RNA Function. RNA and dynamic nuclear organization.
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DOI:
10.1126/science.1252966
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发表时间:
2014-09-12
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Guttman M
Guttman M
中科院分区:
其他
文献类型:
--
作者:
Rinn J;Guttman M

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人类基因组由超过2 m的线性DNA组成,在每个细胞的细胞核中被包装成三维结构。为了确保适当的细胞类型特异性基因调控,每个细胞必须以不同细胞类型不同的方式在细胞核内组织其 DNA、RNA 和蛋白质。长期以来,人们一直怀疑 RNA 本身可能是塑造这种动态核平面图的关键组织因素 (1),最近的研究指出核保留的长非编码 RNA (lncRNA) 在组织核结构中的作用。在这里,我们提供了关于 RNA 在此过程中的经典和新兴作用的视角。细胞核被组织成通常与共享功能和调节作用相关的域 (2, 3)(见图):例如,与核糖体 RNA (rRNA) 加工和生物发生 (4)、mRNA 剪接因子 (5) 以及受特定转录因子 (6) 和染色质调节因子 (3) 调节的基因域。
The human genome consists of more than 2 m of linear DNA, which is packaged into a three-dimensional structure in the nucleus of each cell. To ensure proper cell-type–specific gene regulation, each cell must organize its DNA, RNA, and protein within the nucleus in ways that differ in each cell type. It had long been suspected that RNA itself might be a key organizing factor that shapes this dynamic nuclear floor plan (1), with recent research pointing to a role for nuclear-retained long noncoding RNAs (lncRNAs) in organizing nuclear architecture. Here we provide a perspective on the classical and newly emerging role of RNA in this process.The nucleus is organized into domains generally associated with shared functional and regulatory roles (2, 3)(see the figure): For example, with ribosomal RNA (rRNA) processing and biogenesis (4), mRNA splicing factors (5), and domains of genes that are regulated by specific transcription factors (6) and chromatin regulators (3).
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