Non-coding stem-bulge RNAs are required for cell proliferation and embryonic development in C. elegans.

Non-coding stem-bulge RNAs are required for cell proliferation and embryonic development in C. elegans.
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DOI:
10.1242/jcs.166744
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发表时间:
2015-06-01
影响因子:
4
通讯作者:
Krude T
Krude T
中科院分区:
生物学2区
文献类型:
--
作者:
Kowalski MP;Baylis HA;Krude T

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茎突RNA(Stem bulge RNA,sbRNA)是存在于秀丽隐杆线虫和其他线虫中的一类非编码茎环RNA,其功能尚不清楚。在这里,我们报告的第一个功能特性的线虫sbRNAs。我们证明,从一系列的线虫物种的sbRNA能够重建的复制蛋白在体外的存在下,染色体DNA复制的起始,保守的核苷酸序列基序是必不可少的这一功能。通过用反义morpholino寡核苷酸功能性失活sbRNA,我们发现sbRNA是S期进展、早期胚胎发育和C. elegans in vivo.因此,我们证明了sbRNA在C.优雅sbRNA显示出与脊椎动物Y RNA有限的核苷酸序列相似性,这也是DNA复制起始所必需的。因此,我们的研究结果表明,在DNA复制过程中,小的非编码茎环RNA的基本功能超出了脊椎动物。
Stem bulge RNAs (sbRNAs) are a family of small non-coding stem-loop RNAs present in Caenorhabditis elegans and other nematodes, the function of which is unknown. Here, we report the first functional characterisation of nematode sbRNAs. We demonstrate that sbRNAs from a range of nematode species are able to reconstitute the initiation of chromosomal DNA replication in the presence of replication proteins in vitro, and that conserved nucleotide sequence motifs are essential for this function. By functionally inactivating sbRNAs with antisense morpholino oligonucleotides, we show that sbRNAs are required for S phase progression, early embryonic development and the viability of C. elegans in vivo. Thus, we demonstrate a new and essential role for sbRNAs during the early development of C. elegans. sbRNAs show limited nucleotide sequence similarity to vertebrate Y RNAs, which are also essential for the initiation of DNA replication. Our results therefore establish that the essential function of small non-coding stem-loop RNAs during DNA replication extends beyond vertebrates.
针对 snoRNA 相关蛋白进行 RNAi 后,对秀丽隐杆线虫中 ncRNA 表达模式进行微阵列分析
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