Small RNAs in transcriptional gene silencing and genome defence.

Small RNAs in transcriptional gene silencing and genome defence.
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DOI:
10.1038/nature07756
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发表时间:
2009-01-22
期刊:
影响因子:
64.8
通讯作者:
Moazed, Danesh
Moazed, Danesh
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Moazed, Danesh

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由大约20-30个核苷酸组成的小RNA分子已经成为基因表达和基因组稳定性的强大调节者。在裂解酵母和多细胞生物体中的研究表明,在小RNA的指导下,效应复合体以新生的染色质结合的非编码RNA为目标,并招募染色质修饰复合体。小RNA和新生的非编码转录本之间的相互作用因此揭示了一种将染色质修饰复合体靶向特定染色体区域的新机制,并提示了在染色体复制过程中所产生的染色质状态如何被遗传的可能性。
Small RNA molecules of about 20–30 nucleotides have emerged as powerful regulators of gene expression and genome stability. Studies in fission yeast and multicellular organisms suggest that effector complexes, directed by small RNAs, target nascent chromatin-bound non-coding RNAs and recruit chromatin-modifying complexes. Interactions between small RNAs and nascent non-coding transcripts thus reveal a new mechanism for targeting chromatin-modifying complexes to specific chromosome regions and suggest possibilities for how the resultant chromatin states may be inherited during the process of chromosome duplication.
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